CN101762732B - Oscilloscope with automatic measurement function and measurement data storage method thereof - Google Patents
Oscilloscope with automatic measurement function and measurement data storage method thereof Download PDFInfo
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- CN101762732B CN101762732B CN 200910237371 CN200910237371A CN101762732B CN 101762732 B CN101762732 B CN 101762732B CN 200910237371 CN200910237371 CN 200910237371 CN 200910237371 A CN200910237371 A CN 200910237371A CN 101762732 B CN101762732 B CN 101762732B
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Abstract
The invention discloses an oscilloscope with an automatic measurement function. The oscilloscope comprises a measurement component, a control component and a display component, wherein the control component is used for receiving measurement data output by the measurement component and outputting display data to the display component according to the measurement data; the control component is also used for calculating various different measurement values of the display data according to the display data periodically; the oscilloscope is also provided with a measurement value memory which is used for storing the various different measurement values of the display data in a determined storage depth in an address circulation mode; and the control component also can be used for displaying the various different measurement values on a user interface 300 at the same time in a waveform mode. The device of the invention can conveniently observe the change situation of various parameters such as the frequency, the pulse width, the period and the like of a detected electric signal, and can be widely used for the measurement of various electric signals, and the debugging and the detection of various equipment, components and devices.
Description
Technical field
A kind of the have oscillograph of automatic measurement function and the measurement mechanism field that the measurement data store method has related to display waveform thereof of the present invention have particularly related to the oscillograph field.
Background technology
Digital oscilloscope is the most common universal measurement equipment, and kind is a lot, and division methods is also a lot; As dividing from structure; The most common have desk-top oscillograph, portable oscilloscope and connect the virtual oscilloscope of use with computing machine, divides from function, can be divided into general purpose oscialloscope and oscillograph especial again; From display capabilities, there is the people also oscillograph to be divided into fluorescence and shows that oscillograph or storage show oscillograph etc.
Include front end signal conditioning parts 101, ADC parts 102, control assembly 103, trigger unit 104, keyboard 105, display unit 106 and memory unit 107 with reference to figure 1, common digital oscilloscope.When measured signal inserts oscillograph through probe; Under the control of control assembly 103, measured signal outputs to ADC parts 102 after nursing one's health parts 101 shapings through the front end numeral, after ADC parts 102 convert the measured signal of importing into digital signal; Export it to control assembly 103; Control assembly 103 is according to the trigger pip of trigger unit 104 output, the measurement data of obtaining from ADC parts 102, and finally be converted into the waveform video data; Be kept at described memory unit 107, described waveform video data is used for that the mode with waveform shows measurement data on display unit 106.
The user observes the waveform of measured signal through oscillograph; Often need understand the characterisitic parameter of the waveform that is shown; Such as rise time of, pulse signal, fall time, cycle, frequency or the like; In order to cater to user's this needs, modern digital oscilloscope all is that oscillograph has increased by tens kinds even tens kinds of automatic measurement functions, shows the technical parameter that is shown waveform in order to automatic calculating with to the user.
The United States Patent (USP) 5953009 of Hewlett-Packard Corporation's application; A kind of graphical system and method that is used for calling in measuring system measurement function just introduced a kind of such digital oscilloscope; Referring to Fig. 2, this oscillograph has a user interface 200, is provided with the automatic measurement function hurdle 201 that comprises a plurality of automatic measurement function options on the user interface 200; The user can choose and use any function choosing-item in the automatic measurement function hurdle 201 through mouse; When the user chose and use any function choosing-item in the automatic measurement function hurdle 201, oscillograph just can be carried out corresponding the measurement to the waveform 203 that is shown automatically, when from automatic measurement function hurdle 201, having chosen a plurality of measurement function option; Such as during 4 measurement function options; This oscillograph can be carried out the automatic measurement function corresponding with these function choosing-items simultaneously, and the result that will measure is simultaneously displayed in the parameter display area 202 in the lower left corner of screen, and this oscillograph can also self-timing be carried out and measured; Constantly refresh parameter in the parameter display area 202 in the lower left corner that is presented at screen, make the user can in time recognize the technical parameter that is shown waveform.
In the digital oscilloscope of current popular; Be used for choosing the method for the automatic measurement option on automatic measurement function hurdle 201 to have multiple; The method that the United States Patent (USP) 5953009 of Hewlett-Packard Corporation's application is introduced is a method of utilizing mouse to pull; Also some digital oscilloscope is the method that mechanical key is set through the next door on the automatic measurement function hurdle 201 of screen display; In this case, the user can select different automatic measurement functions through pressing different mechanical keys, such as the DPO4032 type oscillograph of Imtech.
Oscillograph of the prior art can be carried out this automatic measurement function by self-timing, thereby can in time show the current technical parameter that is shown waveform to the user, but also there are some defectives in oscillograph of the prior art; Make the user feel great inconvenience, that is, they can not show the historical record situation of automatic measurement; Though; In order to address this problem, some oscillographs are the Presentation Function of having set up statistical parameter, make oscillograph when showing the measurement result of measuring automatically; Some statistical parameters that also show the automatic measurement function chosen simultaneously, maximal value, the minimum value of measuring such as history or also comprise mean value.But this method can only make the user recognize the position of result in historical measurement result that this is measured automatically, can't make the user separate these measurement parameter historical variations situation, inherent law situation or variation tendency situation intuitively.
Summary of the invention
The objective of the invention is to provides a kind of oscillograph with automatic measurement function for solving the problem that prior art exists.
A kind of oscillograph of the present invention with automatic measurement function; Have a measurement component, a display unit, a storer; A measurement result that is used for according to described measurement component; In described storer, for the display unit display waveform provides the control assembly of video data, described control assembly comprises:
Data collector: be used to obtain one group of video data, and calculate measured value in view of the above;
Measurement memory: be used for preserving described measured value with the address cycle mode according to a definite storage depth;
Trigger: be used to enable described data acquisition unit.
In a kind of oscillograph with automatic measurement function of the present invention,
Can also being connected in series one between described data acquisition unit and the said trigger is used to delay time waits for the time delay part of a preset time.
Described data acquisition unit can also comprise:
Fetch unit: be used to obtain one group of video data;
Counter: be used for calculating described measured value according to described one group of video data;
Described data acquisition unit: can also be used to obtain one group of video data, and calculate a plurality of different measured values in view of the above;
Described measurement memory: can also be used for preserving every kind of described measured value with the address cycle mode respectively according to a definite storage depth.
Another purpose of the present invention is into solving the problem that prior art exists the store method of another measurement data to be provided.
The store method of a kind of measurement data of the present invention is used for oscillograph of the present invention, comprises the steps:
Measuring process: obtain one group of video data, and calculate measured value in view of the above;
Data circulation storing step:, preserve described measured value with the address cycle mode according to a definite storage depth;
One is returned step: return described measuring process.
In the store method of a kind of measurement data of the present invention,
Described measuring process and said returns can also have one and be used to delay time and wait for the time-delay step of a preset time between the step.
Described measuring process can include:
Data read step: obtain one group of video data;
Data calculation procedure: calculate described measured value according to described one group of video data.
Described data computation step: can be to calculate a plurality of different measured values according to described one group of video data;
Described datacycle storing step: can be according to a definite storage depth, preserve every kind of described measured value with the address cycle mode respectively.
Another purpose of the present invention is to provide another to have the oscillograph of automatic measurement function into solving the problem that prior art exists.
A kind of oscillograph of the present invention with automatic measurement function; Have a measurement component, a display unit, a display data memory that is used to display unit preservation video data; A measurement result that is used for according to described measurement component is the control assembly that display data memory provides video data
A kind of oscillograph with automatic measurement function of the present invention also has a measurement memory with definite storage depth;
Described control assembly is carried out has following controlled step:
Measuring process: obtain one group of video data from described display data memory, and calculate measured value in view of the above;
Datacycle storing step: in described measurement memory, preserve described measured value with the address cycle mode;
Return step: return described measuring process.
In a kind of oscillograph with automatic measurement function of the present invention,
Described measuring process and said returns can also have one and be used to delay time and wait for the time-delay step of a preset time between the step.
Described measuring process can also comprise:
Data read step: obtain one group of video data from described display data memory;
Data calculation procedure: calculate described measured value according to described one group of video data.
Described measuring process can also be to obtain one group of video data from described display data memory, and calculates a plurality of different measured values in view of the above;
Described datacycle storing step can also be in described measurement memory, preserves each described measured value with the address cycle mode respectively.
Another purpose of the present invention is to provide another to have the oscillograph of automatic measurement function into solving the problem that prior art exists.
A kind of oscillograph of the present invention with automatic measurement function; Have a measurement component, a control assembly and a display unit; Described control assembly is used to receive the measurement data of measurement component output, and according to described measurement data, to described display unit output video data; Described control assembly also is used for regularly calculating according to described video data the measured value of video data
A kind of oscillograph with automatic measurement function of the present invention also has a measurement memory, is used for the address cycle mode, in the storage depth that confirms, preserves the measured value of described video data,
And described control assembly is also carried out following step successively:
Data acquisition step: obtain a measured value data set that comprises a plurality of measured values;
A display window is provided with step: according to the described measured value in the described measured value data set, and setting screen display format, and the corresponding measured value that shows in the described measured value data set;
One is returned step, carries out described data acquisition step once more.
In a kind of oscillograph with automatic measurement function of the present invention,
The measured value of described video data can be to comprise two kinds at least, and every kind of described measured value comprises a plurality of measured values,
Described data acquisition step can also comprise: obtain at least two different types of and comprise the measured value data set of a plurality of measured values respectively,
It can also be to comprise that described display window is provided with step: respectively according to the measured value in each measured value data set, set a screen display format, and the corresponding measured value that shows in the described measured value data set.
It can also be to comprise that described display window is provided with step: respectively according to the measured value in each measured value data set; Set the screen coordinate of a correspondence; And on described coordinate, with the corresponding measured value that shows in the described measured value data set of waveform display mode.
Described data acquisition step can also be to comprise: the quantity of the measured value in each described measured value data set equals a predetermined value, and the measured value in each described measured value data set is the up-to-date measured value that obtains;
Described display window is provided with step and can also comprises: the horizontal ordinate of setting described screen coordinate according to described predetermined value.
Described display window is provided with step and can also comprises: respectively according to the measured value in each measured value data set, set a data form, and in described data form, show the measured value in the described measured value data set.
Described data acquisition step can also comprise: the quantity of the measured value in each described measured value data set equals a predetermined value, and the measured value in each described measured value data set is the up-to-date measured value that obtains;
Described display window is provided with step and can also comprises: the lattice number of setting described data form according to described predetermined value.
Return the time-delay step that can also have the schedule time that is used to delay time between the step in described data acquisition step and described.
Another purpose of the present invention is to provide another to have the oscillograph of automatic measurement function into solving the problem that prior art exists.
A kind of oscillograph of the present invention with automatic measurement function; Have storer of a measurement component,, a control assembly and a display unit, described control assembly is used to receive the measurement data of measurement component output; And according to described measurement data; To described display unit output video data, described control assembly also is used for measured value regularly, calculate multiple video data according to described video data
Described control assembly also is used to every kind of described measured value and preserves a plurality of measured values,
Described control assembly also is used to make described display unit to show two or more measured values simultaneously, and every kind of described measured value is shown a plurality of measured values.
In a kind of oscillograph with automatic measurement function of the present invention,
Described control assembly can be to be used to make described display unit to show two or more measured values respectively with the waveform display mode, and every kind of described measured value is shown a plurality of measured values.
It is that every kind of described measured value provides a display window that described control assembly can also be controlled described display unit, and in described window, shows described a plurality of measured value with the waveform display mode.
In each described display window, the described measured value that shows with the waveform display mode of all right periodic refreshing of described control assembly.
A kind of oscillograph and measurement data store method thereof of the present invention with automatic measurement function
Have following some outstanding advantage:
(1) can write down or with the measurement result of the automatic measurement function that shows the long period, be convenient to user record;
(2) be convenient to the secular variation trend that the user observes the measurement result of some or several automatic measurement functions;
(3) can be whereby the measurement result of the automatic measurement function of preserving be dumped in the external memory storage, be convenient to utilize miscellaneous equipment analysis.
A kind of oscillograph with automatic measurement function of the present invention can write down and show the measurement result of the automatic measurement of long period, is convenient to the secular variation trend of the user record and the measurement result of the measurement result of analyzing automatic measurement function, the automatic measurement function of observation.
Say from another point of view; Because a kind of oscillograph with automatic measurement function of the present invention can write down and show long test value; The user is broken away from from simple statistical function of past; Can observe the situation of change of a period of time build-in test value clearly, understand the frequency and the amplitude of signal waveform.
A kind of oscillograph with automatic measurement function of the present invention has purposes widely, such as, oscillograph usually is used to observe the amplitude characteristic of electric signal; Just have some specific time points and observe; After utilizing device of the present invention, the user can observe the situation of change of related amplitude value characteristic, under the cooperation of Sweep Source; Can measure and show the amplitude versus frequency characte of element under test, enlarge oscillographic usable range.
Description of drawings
Shown in Figure 1 is the basic circuit structure key diagram of digital oscilloscope.
Shown in Figure 2 is the key diagram of a kind of oscillographic automatic measurement function of the prior art.
Fig. 3 is the key diagram of the user interface 300 of the most preferred embodiment that the present invention selected for use.
Fig. 4 is the flow chart illustration of the preservation step 400 of the automatic measurement parameter of the most preferred embodiment that the present invention selected for use.
Fig. 5 is the flow chart illustration of the preservation step 500 of the automatic measurement parameter of the most preferred embodiment that the present invention selected for use.
Fig. 6 is the structure key diagram of the control assembly 103 of the most preferred embodiment that the present invention selected for use.
Fig. 7 is the flow chart illustration in order to the measured value Stored Procedure 700 of explanation measured value storage means.
Fig. 8 is step display 800 flow chart illustration of the automatic measurement parameter of the most preferred embodiment that the present invention selected for use.
Fig. 9 is step display 900 flow chart illustration of the automatic measurement parameter of the most preferred embodiment that the present invention selected for use.
Figure 10 reads the flow chart illustration of flow process 1000 for the measured value in order to explanation measured value read method.
The most preferred embodiment that Figure 11 selects for use for invention provides the key diagram of a screen coordinate 1100 on described user interface 300.
The most preferred embodiment that Figure 12 selects for use for invention provides the key diagram of a data form 1200 on described user interface 300.
The most preferred embodiment that Figure 13 selects for use for invention provides the key diagram of 4 screen coordinates 1301,1302,1303,1304 on described user interface 300.
The most preferred embodiment that Figure 14 selects for use for invention provides the key diagram of 5 screen coordinates 1401,1402,1403,1404,1405 on described user interface 300.
The most preferred embodiment that Figure 15 selects for use for invention provides the key diagram of 4 data forms 1501,1502,1503,1504 on described user interface 300.
Embodiment
In order a kind of oscillograph and measurement data store method thereof with automatic measurement function of the present invention better to be described, to be introduced the present invention below the most preferred embodiment of being selected for use.
In the most preferred embodiment that the present invention selected for use; Referring to Fig. 1, described oscillograph also includes front end signal conditioning parts 101, ADC parts 102, control assembly 103, trigger unit 104, keyboard 105, the display unit 106 that comprises a LCD display and memory unit 107.When measured signal inserts oscillograph through probe; Under the control of control assembly 103, measured signal outputs to ADC parts 102 after nursing one's health parts 101 shapings through the front end numeral, after ADC parts 102 convert the measured signal of importing into digital signal; Export it to control assembly 103; Control assembly 103 is according to the trigger pip of trigger unit 104 output, the measurement data of obtaining from ADC parts 102, and finally be converted into the waveform video data; Be kept at described memory unit 107, described waveform video data is used for that the mode with waveform shows described measurement data on the LCD display of display unit 106.
In the present embodiment; Described oscillograph has a front panel H, and described LCD display is installed on the front panel H, shows a user interface 300 on the described LCD display; The centre 306 of user interface 300 is used for showing described measurement parameter with the waveform mode; User interface 300 left sides have a measurement menu hurdle 301, comprise multinomial automatic measurement function option 302a, 302b, 302c, 302d in the measurement menu hurdle 301, when the user when pressing the mechanical key that is arranged on the front panel 303,304; Described oscillographic control assembly 103 can control break menu bar 301 content; The measurement function of wherein automatic measurement function option 302a, 302b, 302c, 302d is changed, and is the rising edge time that is used for measured waveform such as the original function of option 302b, press the mechanical key 303 or button 304 that is arranged on the front panel the user after; The measurement function of option 302b will change, such as being transformed to the maximum peak voltage of measuring display waveform.On oscillographic front panel H; Position with respect to the automatic measurement function option 302a on the measurement menu hurdle 301,302b, 302c, 302d; Also correspondence is provided with a plurality of mechanical key 305a, 305b, 305c, 305d that menu function is selected that are used for; When the user utilizes button 303 or 304 to make to present a menu 301 on the display unit; Described oscillographic control assembly 103 can give corresponding key assignments for each corresponding with it mechanical key 305a, 305b, 305c, 305d corresponding to this menu 301 immediately; When the user presses button 303 or 304 once more, control assembly 103 can make and have a new menu 301 on the user interface 300, and gives new key assignments for each button 305a, 305b, 305c, 305d corresponding to this new menu 301 immediately; When making the user press different keys 305a, 305b, 305c, 305d, control assembly 103 can recognize that the user has selected that automatic measurement function.In the present embodiment, the automatic measurement function option that can select of user comprises: maximal value, minimum value, peak-to-peak value, mean value, amplitude, cycle, frequency, positive pulsewidth, negative pulsewidth, rise time, fall time, communication channel delay, overshoot, dash etc. tens of kinds in advance.
In the present embodiment; When the user utilizes one of button 305a, 305b, 305c, 305d to choose an automatic measurement function option 302a, 302b, 302c, 302d; When pressing button 305a and choose automatic measurement function option 302a; Described oscillographic control assembly 103 is according to the key assignments of this case 305a, judge the automatic measurement function option 302a that will carry out, during such as the function of the peak-peak that is measured waveform as automatic measurement function option 302a; Described oscillographic control assembly 103 is carried out the calculating operation as a result of an automatic measurement function immediately; From described memory unit 107, obtain described waveform video data, and calculate the peak-peak that is presented at the waveform on the screen, and result of calculation is presented in the parameter display area 307 of user interface 300 according to this waveform video data.
In the present embodiment; The user can select 4 automatic measurement functions simultaneously; When the user presses one of button 305a, 305b, 305c, 305d and chooses a measurement function, such as, choose the pairing automatic measurement function of automatic measurement function option 302a; Described oscillographic control assembly 103 is just carried out the calculating operation as a result of an automatic measurement function immediately; From memory unit 107, obtain described waveform video data immediately, and, will be presented in the parameter display area 307 of user interface 300 with the corresponding result of calculation of automatic measurement function option 302a according to the button 305a that the user chooses.The measurement result that can show in the present embodiment, 4 automatic measurement function option 302a, 302b, 302c, 302d in the parameter display area 307 at most simultaneously.
As illustrating, according to different needs, the described oscillograph of present embodiment also can be designed to permitted user and select 5 or more multinomial automatic measurement function simultaneously, and is same, also can make parameter display area 307 show more measurement result simultaneously.
In the present embodiment; Automatically the measurement result of measurement function option 302a, 302b, 302c, 302d is to be presented at one to be specifically designed in the zone 307 that parameter shows, for the less display of screen, this way is impracticable often; As illustrating; Also can adopt the method for transparent demonstration measurement parameter this moment, automatic measurement function option 302a, 302b, 302c, the pairing measurement result of 302d and waveform shown to be placed in same regional 306 show that the demonstration of measurement result and waveform demonstration only at this moment can be overlapped; Phase mutual interference sometimes influences the waveform that the user observes measured signal.
In the present embodiment; After the user chooses one or more among automatic measurement function option 302a, 302b, 302c, the 302d; Oscillographic control assembly 103 is carried out the calculating operation as a result of described automatic measurement function with self-timing, and the continuous measurement result that newly in parameter display area 307, shows of scrubbing brush, such as; Every interval 100ms measures once, makes the user can in time observe the measurement result of the automatic measurement parameter of the waveform that is demonstrated by user interface 300.Here need to prove that according to different needs, the time interval of regularly carrying out automatic measurement result calculating operation can be different, present embodiment is merely one and illustrates described interval time.
In the present embodiment, be kept at described waveform video data in the memory unit 107 and be and directly be used for the track data of on user interface 300 display waveform, promptly be used to show whole video datas of a waveform.After the user chooses an option among automatic measurement function option 302a, 302b, 302c, the 302d; When measuring the voltage max Vtop of display waveform; Control module 103 just obtains the track data of described display waveform from described memory unit 107; And then utilization and user choose automatic measurement function option 302a, 302b, 302c, the corresponding computing formula of 302d, calculates corresponding with it measured value.
For example, in supposition memory unit 107, preserve the track data of a 8bit, its maximal value is 255; Minimum value is 0; 128 are expressed as 0V, supposition again, and the maximal value of described track data is 200; Then when current measurement gear is 1V, the voltage max Vtop that measures display waveform equals (1V * 4Div/128) * (200-128)=2.25V.
In the present embodiment, the right side of user interface 300 also has one group of menu item selection key 308a, 308b, 308c, 308d, 308e, 308f that is used to select the oscillograph function; Utilize these buttons 308a, 308b, 308c, 308d, 308e, 308f; The user can make user interface 300 present a function menu, or the user can choose the function choosing-item in this menu, whereby; Send steering order to control assembly 103; Make control assembly 103 carry out corresponding operation, such as, the preservation and the display operation of input-output operation, oscillograph device calibration operation, configuration operation and automatic measurement parameter.
In the present embodiment; After the user chooses an option among automatic measurement function option 302a, 302b, 302c, the 302d; And utilize menu item selection key 308a, 308b, 308c, 308d, 308e, 308f, and selected the preservation operation of automatic measurement parameter, control assembly 103 is promptly carried out the preservation step 400 of an automatic measurement parameter; In conjunction with reference to figure 1,3,4, comprise successively:
A data read step 401: in this step, control assembly 103 reads the track data of one group of display waveform from described memory unit 107;
Data calculation procedure 402: in this step; Control assembly 103 call with user-selected in automatic measurement function option 302a, 302b, 302c, the corresponding computing formula of 302d; Track data to obtaining from described memory unit 107 calculates, and calculates described measured value.
A data circulation storing step 403: in this step, control assembly 103 in memory unit 107, with the address cycle mode, is preserved described measured value according to a definite storage depth.
A time-delay step 404: in this step, a preset time of control assembly 103 time-delay waits.
One is returned step 405: in this step, control assembly 103 controlled step 400 are returned and are carried out described data read step 401, make preservation step 400 circular flow of described automatic measurement parameter.
As illustrating, in the preservation step 400 of automatic measurement parameter, time-delay step 404 also can be arranged between calculation procedure 402 and the datacycle storing step 403.
In the present embodiment; After the user chooses a plurality of options among automatic measurement function option 302a, 302b, 302c, the 302d; In case the user utilizes menu item selection key 308a, 308b, 308c, 308d, 308e, 308f, selected the preservation operation of automatic measurement parameter, control assembly 103 is promptly carried out the preservation step 500 of an automatic measurement parameter; In conjunction with reference to figure 1,3,5, comprise successively:
A data read step 501: in this step, control assembly 103 reads the track data of one group of display waveform from described memory unit 107;
Data calculation procedure 502: in this step; Control assembly 103 call with user-selected in a plurality of automatic measurement function option 302a, 302b, 302c, the corresponding a plurality of computing formula of 302d; Track data to obtaining from described memory unit 107 calculates, and calculates a plurality of different measured values.
A data circulation storing step 503: in this step, control assembly 103 in memory unit 107, with the address cycle mode, is preserved every kind of described measured value respectively according to a definite storage depth.
Time-delay step 504: in this step, a preset time is waited in control assembly 103 time-delays.
Return step 505: in this step, control assembly 103 returns step 500 and carries out data read step 501, makes preservation step 500 circular flow of described automatic measurement parameter.
As illustrating, same, in the preservation step 500 of automatic measurement parameter, described time-delay step 504: also can be arranged between described calculation procedure 502 and the described datacycle storing step 503.
In the present embodiment, in conjunction with reference to figure 1,3,6, described control assembly 103 includes a fetch unit being connected in series successively 601, counter 602, measurement memory 603, time delay part 604, a trigger unit 605.As illustrating, in control assembly 103, time delay part 604: also can be arranged between described counter 602 and the measurement memory 603.
Choose an option among automatic measurement function option 302a, 302b, 302c, the 302d the user, and also utilize menu item selection key 308a, 308b, 308c, 308d, 308e, 308f, when having selected the preservation operation of automatic measurement parameter:
Fetch unit 601: be used for reading the track data of one group of display waveform from described memory unit 107;
Counter 602: be used for calling and user-selected automatic measurement function option 302a, 302b, 302c, the corresponding computing formula of 302d, the track data that obtains from described memory unit 107 is calculated, calculate described measured value.
Measured value storage manager 603: be used for according to a definite storage depth, in memory unit 107,, preserve described measured value with the address cycle mode.
Time delay part 604: be used to delay time and wait for a preset time.
Trigger unit 605: be used for enabling fetch unit 601 once more, make it once more from described memory unit 107, read the track data of one group of new display waveform.
In the present embodiment, described memory unit 107 comprises a measurement memory, and this storer has definite storage depth, is specifically designed to the address cycle mode, preserves described measured value.
Choose a plurality of options among automatic measurement function option 302a, 302b, 302c, the 302d the user, and also utilize menu item selection key 308a, 308b, 308c, 308d, 308e, 308f, when having selected the preservation operation of automatic measurement parameter:
Fetch unit 601: be used for reading the track data of one group of display waveform from described memory unit 107; Counter 602: be used for calling and user-selected a plurality of automatic measurement function option 302a, 302b, 302c, the corresponding a plurality of computing formula of 302d; Track data to obtaining from described memory unit 107 calculates, and calculates a plurality of different measured values.
Measured value storage manager 603: be used for according to a definite storage depth, in memory unit 107,, preserve every kind of described measured value respectively with the address cycle mode.
Time delay part 604: be used for time-delay and wait for a preset time.
Trigger unit 605: be used to enable fetch unit 601, make it once more from described memory unit 107, read the track data of one group of new display waveform.
In the present embodiment, the time of the reservation of described time delay part 604 waits can be 100ms.Described fetch unit 601 can be the track data that from described memory unit 107, reads whole display waveforms.
In the present embodiment, comprised a measurement memory in the described memory unit 107, this measurement memory has definite storage depth, is specifically designed to the address cycle mode, preserves every kind of described measured value respectively.
In the present embodiment, described definite storage depth can be 100, in described measurement memory; Can adopt the address cycle mode 100 to be storage depth, preserve multiple measured value respectively; Promptly, always preserve 100 up-to-date measured values with the address cycle mode to every kind of measured value.
Illustrate as one, how in a measurement memory with definite storage depth with the address cycle mode, preserve one group of described measured value, be technology appreciated by those skilled in the art.Such as, the storage depth of supposing described measurement memory is 100, carries out following measured value Stored Procedure 700 and just can in this measurement memory, preserve described measured value with the address cycle mode, with reference to figure 7, comprising:
Step 701 is used at first obtaining a new measured value
Step 703 is used on described address, preserving measured value
Step 704 is used to judge whether stored number equals storage depth 100, if do not wait, program is returned described step 701, continues execution in step 701, obtains a new measured value again.If equate that then execution in step 705
Step 705 is used to the memory address zero clearing of measured value, and program is returned step 701.
With the address cycle mode, preserving multiple described measured value has several different methods in a measurement memory with definite storage depth, and this also is a technology appreciated by those skilled in the art.Wherein the simplest method is all moved described measured value Stored Procedure 700 respectively for different types of measured value exactly.
In the present embodiment, the storage depth of described measurement memory is 100, and can preserve 4 kinds of different measured values simultaneously.That is, the total memory capacity of this measurement memory is 4 * 100.
As illustrating, the storage depth of described measurement memory also can be more or less, and the kind that can preserve measured value simultaneously also can be more or less, such as preserving 5 kinds of different measured values.
In the present embodiment; In conjunction with reference to figure 1,3,8; After the user chooses an option among automatic measurement function option 302a, 302b, 302c, the 302d,, selected the display operation of automatic measurement parameter in case the user utilizes menu item selection key 308a, 308b, 308c, 308d, 308e, 308f; Control assembly 103 is promptly carried out the step display 800 of an automatic measurement parameter, comprising:
Data acquisition step 801: in this step, control assembly 103 obtains a measured value data set that comprises 20 up-to-date measured values from described memory unit 107.
As explanation, according to different application needs, also can design and make described control assembly 103 from described memory unit 107, obtain a measured value data set that comprises more measured value, present embodiment is merely one and illustrates.
Display window is provided with step 802: in this step; Control assembly 103 provides a screen coordinate 1100 on described user interface 300; In conjunction with referring to Fig. 1,3,8,11; And the quantity of the described measured value in the described measured value data set of foundation is 20; The length 1102 of setting the horizontal ordinate 1101 of this screen coordinate 1100 is 20, according to the data maximal value and the minimum value of the described measured value in the described measured value data set; Set the amplitude 1104 of the ordinate 1103 of this screen coordinate 1100, make its difference that equals this data maximal value and minimum value and on described coordinate 1100, show the measured value in the described measured value data set with waveform display mode correspondence.Describedly show that so that the waveform display mode is corresponding measured value in the described measured value data set is meant the expression mode that connects adjacent measured value through straight line 1105.
As explanation; In the present embodiment; When control assembly 103 provides screen coordinate 1100 on described user interface 300, also can make the amplitude 1104 of the ordinate 1103 of this screen coordinate 1100 be slightly larger than the difference of this data maximal value and minimum value, also can make the length 1102 of the horizontal ordinate 1101 of this screen coordinate 1100 be slightly larger than 20, described also can be to adopt to utilize curve mode to be connected the expression mode of adjacent measured value with the waveform display mode.Illustrate as another, under or the situation that screen is less more for the measured value data, the waveform display mode also can adopt the measured value data are adopted the mode that shows again after the compression, so that show measurement data more.
Time-delay step 803, in this step, the time of a 100ms of control assembly 103 time-delays,
As explanation, this delay time also can be set at other numerical value as required, is merely one here and illustrates.
As illustrating; Be provided with in the step 802 at display window; Described control assembly 103 can also provide a data form 1200 on described user interface 300; In conjunction with referring to Fig. 1,12, and be 20, set the lattice several 1202 of described data form 1200 according to the quantity of the described measured value in the described measured value data set.And in described data form 1200, with the measured value 1201 in the pairing measured value data set of digital form 1203 these automatic measurement function options of demonstration.The quantity of the measured value in the measured value data set is more, and the lattice several 1202 that make data form 1200 more also can let the user through the whole measured values 1201 in the mode enquiry form 1200 of page turning or slide bar also.
One is returned step 804, and in this step, control assembly 103 makes step display 800 return data acquisition step 801, carries out described data acquisition step 801 once more.
As illustrating, in described real step 800, any one step by step 801,802,803, also can increase between 804 other treatment steps are arranged.
After the user chooses a plurality of options among automatic measurement function option 302a, 302b, 302c, the 302d; Utilize menu item selection key 308a, 308b, 308c, 308d, 308e, 308f; When selecting the display operation of automatic measurement parameter; Control assembly 103 is promptly carried out the step display 900 of an automatic measurement parameter, in conjunction with reference to figure 1,3,9, comprising:
Data acquisition step 901: in this step; Control assembly 103 obtains a plurality of measured value data sets from described memory unit 107, every group of measured value data set comprises a plurality of up-to-date measured values; As explanation; The described oscillographic control assembly 103 of present embodiment can get access to 4 measured value data sets at most from described memory unit 107, every group of measured value data are 20.
Illustrate as another; According to different application needs, also can make described control assembly 103 from described memory unit 107, obtain more different types of measured value data set, the data volume of every group of measured value also can be more or less; In the present embodiment; The data volume of every group of measured value is 20, only illustrates as one, and the data volume of every group of measured value also can equal the measured value storage depth of memory unit 107; When being 100, also can make the data volume of every group of measured value just equal 100 such as measured value storage depth when memory unit 107.
Display window is provided with step 902: control assembly 103 provides a plurality of screen coordinates simultaneously on described user interface 300; And according to the quantity of the measured value in each described measured value data set set the length of the horizontal ordinate of this screen coordinate, according to the data maximal value of the described measured value in each described measured value data set; Set on the ordinate amplitude and each described coordinate of its pairing screen coordinate, with the corresponding respectively measured value that shows in the described measured value data set of waveform display mode.
As explanation; In conjunction with reference to figure 1,3,13; In the present embodiment; Control assembly 103 provides 4 screen coordinates 1301,1302,1303,1304 at most on described user interface 300, screen coordinate is being provided at 1301,1302,1303,1304 o'clock, is to make this screen coordinate 1301,1302,1303,1304; Horizontal ordinate ground length 1305 equal the quantity of the measured value in the measured value data set; When the data volume of every group of measured value was 20, horizontal ordinate ground length 1305 promptly equaled 20, made the amplitude 1306 of the ordinate of this screen coordinate 1301,1302,1303,1304 equal the data maximal value of the described measured value in the described measured value data set and the difference of minimum value.Describedly show that so that the waveform display mode is corresponding measured value in the described measured value data set is meant, connect the expression mode of adjacent measured value through straight line 1307.
As explanation; In the present embodiment; Control assembly 103 provides any screen coordinate 1301,1302,1303,1304 o'clock on described user interface 300; Also can make the amplitude 1306 of the ordinate of this screen coordinate 1301,1302,1303,1304 be slightly larger than the difference of this data maximal value and minimum value, the horizontal ordinate ground length 1305 of this screen coordinate 1301,1302,1303,1304 also can be slightly larger than the quantity of the measured value in the measured value data set, described also can be to adopt the expression mode utilize curve mode to connect adjacent measured value with the waveform display mode.
As another explanation, for different application needs, in the step display 900 of automatic measurement parameter; It also can be that 5 screen coordinates 1401,1402,1403,1404,1405 are provided simultaneously that display window is provided with step 902, referring to Figure 14, and can certainly be more; For the ease of the careful observation of user; Can also pass through magnify tool, amplify and watch wherein any coordinate 1401,1402,1403,1404,1405, so that each measured value that shows with the waveform display mode of careful observation.Can certainly adopt central authorities to close injecting method, the coordinate 1401,1402,1403,1404,1405 that the user is most interested in is adjusted to the central authorities of user interface, so that the careful observation of user.In originally illustrating; The central authorities of user interface 300 just the 5th screen coordinate 1405 have been arranged on; And the physical dimension of this screen coordinate 1405 is slightly larger than other screen coordinate 1401,1402,1403,1404, so that user's primary part observation measurement parameter wherein.
Illustrate as another; Be provided with in the step 902 at the automatic display window of the step display 900 of measurement parameter; Described control assembly 103 can also provide a plurality of data forms on described user interface 300, such as, 4 data forms 1501,1502,1503,1504; Referring to Figure 15, and set the lattice several 1505 of described data form 1501,1502,1503,1504 according to the quantity of the described measured value in each described measured value data set.And in each described data form 1505, show every kind of described measured value respectively with digital 1506 modes.
Automatically the step display 900 of measurement parameter also comprises:
A time-delay step 903, the time of a 100ms of time-delay
As explanation, this delay time also can be set at other numerical value as required, is merely one here and illustrates.
One is returned step 904, makes step display 900 return data acquisition step 901, carries out described data acquisition step 901 once more.
As illustrating, in described real step 900, any one step by step 901,902,903, also can increase between 904 other treatment steps are arranged.
As illustrating, in different application scenarios, also can not need this time-delay step, such as moving under the slower situation in execution in step 901,902.
Step 1005 judges whether the degree of depth that reads the address equals 100,
When step 1005, judge that the degree of depth that reads the address is not equal at 100 o'clock, execution in step 1006 adds 1 to reading the address, and with this address input step 1002, makes step 1002, with new address, reads measured value once more.
When step 1005, judge that the degree of depth that reads the address has equaled at 100 o'clock, execution in step 1007 to reading address decrement 00, and with this address input step 1002, makes step 1002, with new address, reads measured value once more.
As illustrating, for from this memory unit 107, obtain a plurality of measured value data sets, also be very easily to realize, the simplest method is exactly that the above-mentioned measured value that repeatedly circulates reads flow process 1000, is used to read a plurality of different measured values data sets.In practical application; From memory unit 107, obtain a plurality of measured value data sets, and every group of measured value data set comprises that the method for a plurality of up-to-date measured values has a variety of; The method of utilizing measured value to read flow process 1000 only is one of several different methods; For additive method, also be fine, but repeat no more here.
Of the present invention a kind of have the oscillograph of automatic measurement function and the measurement data store method not only can write down or with the measurement result of the automatic measurement function that shows the long period; Be convenient to the secular variation trend of the user record and the measurement result of the measurement result of analyzing automatic measurement function, the automatic measurement function of observation; And also has purposes more widely; Such as; Oscillograph normally is used to observe the amplitude characteristic of electric signal, promptly observes the variation of the amplitude of measured signal from time domain, but after utilizing device of the present invention; The user can also observe the situation of change of multiple parameters such as the frequency, pulsewidth, cycle of tested electric signals, the measurement that device of the present invention can the multiple electric signal of widespread use and the debugging and the detection of plurality of devices, parts or device.
Claims (26)
1. oscillograph with automatic measurement function; Have a measurement component, a display unit, a storer; A measurement result that is used for according to described measurement component; In described storer,, it is characterized in that described control assembly comprises for the display unit display waveform provides the control assembly of video data:
Data collector: be used to obtain one group of video data, and calculate measured value in view of the above;
Measurement memory: be used for preserving described measured value with the address cycle mode according to a definite storage depth;
Trigger: be used to enable described data acquisition unit.
2. oscillograph according to claim 1 is characterized in that: also being connected in series one between described data acquisition unit and the said trigger is used to delay time waits for the time delay part of a preset time.
3. oscillograph according to claim 1 and 2 is characterized in that: described data acquisition unit comprises:
Fetch unit: be used to obtain one group of video data;
Counter: be used for calculating described measured value according to described one group of video data.
4. oscillograph according to claim 1 and 2 is characterized in that:
Described data acquisition unit: be used to obtain one group of video data, and calculate a plurality of different measured values in view of the above;
Described measurement memory: be used for preserving every kind of described measured value with the address cycle mode respectively according to a definite storage depth.
5. oscillograph according to claim 3 is characterized in that:
Described counter: be used for calculating a plurality of different measured values according to described one group of video data;
Described measurement memory: be used for preserving every kind of described measured value with the address cycle mode respectively according to a definite storage depth.
6. the store method of a measurement data is used for the described oscillograph of claim 1, it is characterized in that comprising the steps:
Measuring process: obtain one group of video data, and calculate measured value in view of the above;
Data circulation storing step:, preserve described measured value with the address cycle mode according to a definite storage depth;
One is returned step: return described measuring process.
7. method according to claim 6 is characterized in that: described measuring process and said returns also to have one and is used to delay time and waits for the time-delay step of a preset time between the step.
8. according to claim 6 or 7 described methods, it is characterized in that: described measuring process comprises:
Data read step: obtain one group of video data;
Data calculation procedure: calculate described measured value according to described one group of video data.
9. according to claim 6 or 7 described methods, it is characterized in that:
Described measuring process: obtain one group of video data, and calculate a plurality of different measured values in view of the above; Described datacycle storing step:, preserve every kind of described measured value with the address cycle mode respectively according to a definite storage depth.
10. method according to claim 8 is characterized in that:
Described data computation step: calculate a plurality of different measured values according to described one group of video data;
Described datacycle storing step:, preserve every kind of described measured value with the address cycle mode respectively according to a definite storage depth.
11. oscillograph with automatic measurement function; Have a measurement component, a display unit, a display data memory that is used to display unit preservation video data; A measurement result that is used for according to described measurement component is the control assembly that display data memory provides video data, it is characterized in that:
Also has a measurement memory with definite storage depth;
Described control assembly is carried out has following controlled step:
Measuring process: obtain one group of video data from described display data memory, and calculate measured value in view of the above;
Data circulation storing step: in described measurement memory, preserve described measured value with the address cycle mode;
One is returned step: return described measuring process.
12. oscillograph according to claim 11 is characterized in that: described measuring process and said returns also to have one and is used to delay time and waits for the time-delay step of a preset time between the step.
13. according to claim 11 or 12 described oscillographs, it is characterized in that: described measuring process comprises:
Data read step: obtain one group of video data from described display data memory;
Data calculation procedure: calculate described measured value according to described one group of video data.
14., it is characterized in that according to claim 11 or 12 described oscillographs:
Described measuring process: obtain one group of video data from described display data memory, and calculate a plurality of different measured values in view of the above;
Described datacycle storing step: in described measurement memory, preserve each described measured value with the address cycle mode respectively.
15. oscillograph according to claim 13 is characterized in that:
Described data computation step: calculate a plurality of different measured values according to described one group of video data;
Described datacycle storing step: in described measurement memory, preserve each described measured value with the address cycle mode respectively.
16. oscillograph with automatic measurement function; Have a measurement component, a control assembly and a display unit; Described control assembly is used to receive the measurement data of measurement component output, and according to described measurement data, to described display unit output video data; Described control assembly also is used for regularly calculating according to described video data the measured value of video data, it is characterized in that:
Also have a measurement memory, be used for, in the storage depth that confirms, preserve the measured value of described video data, and described control assembly is also carried out following step successively with the address cycle mode:
Data acquisition step: obtain a measured value data set that comprises a plurality of measured values;
A display window is provided with step: according to the described measured value in the described measured value data set, and setting screen display format, and the corresponding measured value that shows in the described measured value data set;
One is returned step, carries out described data acquisition step once more.
17. oscillograph according to claim 16 is characterized in that:
The measured value of described video data comprises two kinds at least, and every kind of described measured value comprises a plurality of measured values;
Described data acquisition step: comprise that to obtain at least two different types of and comprise the measured value data set of a plurality of measured values respectively;
Described display window is provided with step: comprises respectively and to set a screen display format according to the measured value in each measured value data set, and the corresponding measured value that shows in the described measured value data set.
18. oscillograph according to claim 17 is characterized in that:
Described display window is provided with step: comprises respectively according to the measured value in each measured value data set, sets the screen coordinate of a correspondence, and on described screen coordinate, with the corresponding measured value that shows in the described measured value data set of waveform display mode.
19. oscillograph according to claim 18 is characterized in that:
Described data acquisition step: the quantity that comprises the measured value in each described measured value data set equals a predetermined value, and the measured value in each described measured value data set is the up-to-date measured value that obtains;
Described display window is provided with step: comprise the horizontal ordinate of setting described screen coordinate according to described predetermined value.
20. oscillograph according to claim 17 is characterized in that:
Described display window is provided with step: comprise respectively and to set a data form, and in described data form, to show the measured value in the described measured value data set according to the measured value in each measured value data set.
21. oscillograph according to claim 20 is characterized in that:
Described data acquisition step: the quantity that comprises the measured value in each described measured value data set equals a predetermined value, and the measured value in each described measured value data set is the up-to-date measured value that obtains;
Described display window is provided with step: comprise the lattice number of setting described data form according to described predetermined value.
22., it is characterized in that: return the time-delay step that also has the schedule time that is used to delay time between the step in described data acquisition step and described according to claim 16,17,18,19,20 or 21 described oscillographs.
23. oscillograph with automatic measurement function; Have a measurement component, a storer, a control assembly and a display unit; Described control assembly is used to receive the measurement data of measurement component output, and according to described measurement data, to described display unit output video data; Described control assembly also be used for regularly, calculate the measured value of multiple video data according to described video data, it is characterized in that:
Described control assembly also is used to every kind of described measured value and preserves a plurality of measured values, and described control assembly also is used to make described display unit to show two or more measured values simultaneously, and every kind of described measured value is shown a plurality of measured values.
24. oscillograph according to claim 23 is characterized in that:
Described control assembly is used to make described display unit to show two or more measured values respectively with the waveform display mode, and every kind of described measured value is shown a plurality of measured values.
25. oscillograph according to claim 24 is characterized in that:
It is that every kind of described measured value provides a display window that described control assembly is also controlled described display unit, and in described window, shows described a plurality of measured value with the waveform display mode.
26. oscillograph according to claim 25 is characterized in that:
In each described display window, the described measured value that shows with the waveform display mode of described control assembly periodic refreshing.
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