CN102621346A - Centering instrument for automobile steering wheels - Google Patents
Centering instrument for automobile steering wheels Download PDFInfo
- Publication number
- CN102621346A CN102621346A CN2012100790595A CN201210079059A CN102621346A CN 102621346 A CN102621346 A CN 102621346A CN 2012100790595 A CN2012100790595 A CN 2012100790595A CN 201210079059 A CN201210079059 A CN 201210079059A CN 102621346 A CN102621346 A CN 102621346A
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- vehicle steering
- responsible
- centering instrument
- scrambler
- instrument according
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- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The invention provides a centering instrument for automobile steering wheels. The centering instrument is characterized in that an automobile steering wheel rotates to drive an encoder, the rotation direction of the automobile steering wheel is identified according to pulses rotationally outputted by the encoder, and whether the automobile steering wheel is centered or not is determined according to the quantity of the pulses. The centering instrument for automobile steering wheels has the advantages of low cost, simple structure and convenience in use, and can be widely applied to the automobile manufacturing industry and the automobile repair industry.
Description
Technical field
The present invention relates to the knowledge of Digital Electronic Technique and mechanical field; Specifically be to utilize the rotation of vehicle steering to drive scrambler; Rotate the pulse of output according to scrambler and differentiate the direction that vehicle steering rotates, and confirm whether centering of vehicle steering according to the number of pulse.
Background technology
Along with the raising of China people people life level, the life of the increasing entering of automobile, auto manufacturing and remanufactured-vehicle business are also along with prosperity is got up.In automobile making and motor vehicle repair process,, vehicle steering needs earlier vehicle front to be proofreaied and correct before being installed, and just need carry out centering and handle automobile steering wheel.Each can rotate 540 degree about automobile steering wheel, does not rely on centering manually merely if do not rely on instrument, and that will be a very time-consuming and loaded down with trivial details thing.
Commonplace centering method is to adopt centering instrument at present, and mostly existing centering instrument is to adopt laser and mechanical hook-up to come centering, and manufacturing cost is higher relatively, and complexity is also than higher.
In order to address the above problem, the present invention proposes a kind of vehicle steering centering instrument, its adopts simple numerical electronics knowledge and simple mechanical principle, and is cheap for manufacturing cost, uses and safeguards simply, can be widely used in auto manufacturing and remanufactured-vehicle business.
Summary of the invention
The objective of the invention is to propose a kind of vehicle steering centering instrument, it is with low cost, and is simple in structure, does not change the structure of automobile, only need it is connected with vehicle steering and can use during use, can be widely used in automobile making and the repairing trades.
For reaching this purpose, the present invention adopts following technical scheme:
(1) system's ingredient: total system is made up of six funtion parts such as coupling body, scrambler, phase detector, counter, controller, displays, and each funtion part connects as one.
(2) system works principle: the whole system operation principle is rotated the pulse signal that produces for gathering steering wheel shaft through scrambler; Differentiate rotation direction through the phase demodulation module; And then the process counting module is counted; The numerical value of counting feeds back to the operator after handling through single-chip microcomputer again, to reach the purpose of centering.The principle of work of concrete each module is following:
Coupling body is the metal shaft of a band crank, and the lower end is a shaft coupling, and during use and the axle top of vehicle steering connects together; The crank of upper end be operator's a operation part, rotates crank through the operator, axle rotation that can the driving automobile bearing circle; The middle part of coupling body is a gear, and with the gearing mesh on the coder shaft, coupling body can drive coder shaft when rotating and rotate together.
Scrambler is a photoelectric encoder, have A mutually with B pulse output interface mutually, the rotation direction that can judge in view of the above spool.The axle of scrambler has a gear, and the size of gear is identical with the gear that coupling body attaches, both engagements.When coupling body rotated, scrambler also rotated thereupon, thereby produced pulse signal.The scrambler revolution can produce 2500 of pulse signals.
Phase detector is the circuit of the discriminating rotational axis direction of employing digital circuit realization.Phase detector is made up of 74LS00 and two kinds of chips of 74LS74.It can pass through the A phase of scrambler output and the rotation direction that the B phase pulse signal is differentiated axle, and exports counting pulse signal and give counter.
Counter also is to adopt digital circuit to constitute.It adopts 4 74LS193 cascades to constitute, and can add counting and also can subtract counting, and counting region is 0-65535.Can change 3 circles altogether because vehicle steering passes through, every circle produces 2500 of pulses, produces 7500 of pulses altogether, is among the technical scope of 4 74LS193 cascades.
Controller is the main control part of total system, and it is responsible for the count value that the count pick up device sends, and count value is carried out integration processing by high-order and low level; It also is responsible for the enumeration data after integrating is changed, calculated, so that send display to show; It also is responsible for handling operator's button selection, and operates accordingly according to operator's selection; In addition, it also is responsible for the logic of processes and displays.Controller mainly is made up of STC89C52RC single-chip microcomputer, 3 74LS373 and 2 buttons.STC89C52RC is responsible for data operation and logical process, and 74LS373 is responsible for latching the high low level count value that counter uploads and the displayed value of display, and 2 buttons are used for the operator and operate selection: zero clearing, centering.
Display mainly is made up of the charactron of 4 one, and the numerical value after it is responsible for single-chip microcomputer handled shows, to remind the duty of the present vehicle steering centering instrument of operator: just change, counter-rotating, centering.
The beneficial effect of this system is: (1) provides a kind of rational and effective vehicle steering centering implementation; (2) make, cost of installation and use is cheap, simple in structure, do not change, the structure of damage car not; (3) carry, easy to use, can be widely used in auto manufacturing and remanufactured-vehicle business.
Description of drawings
Fig. 1 is a vehicle steering centering instrument system schematic.
Fig. 2 is the interface of vehicle steering centering instrument.
Embodiment:
Below in conjunction with accompanying drawing the present invention is further specified:
The present invention develops a kind of vehicle steering centering instrument, and it is simple in structure, with low cost, easy to use.Fig. 1 is a vehicle steering centering instrument system schematic.1 coupling body for the band crank, its underpart is connected with the vehicle steering axle during use;
A crank 2, the operator uses hand clockwise or rotate counterclockwise crank during work, thus the driving automobile bearing circle rotates.Vehicle steering forwards the other end to from an end can rotate for 3 weeks altogether.
Two gears 3 that specification is the same, their effect are that the rotation with crank is delivered to scrambler 4.
A scrambler 4, its effect are that the rotation according to gear 3 produces A phase, B two-way square-wave signal altogether mutually, so that mirror is differentiated and the counting mechanism counting to mechanism.
A phase detector 5, its effect are the rotation directions of differentiating bearing circle according to the two-way square-wave signal of scrambler 4 outputs, and to subsequent conditioning circuit count signal and control signal are provided.It comprises 1 74LS00, a 74LS74.
A controller 7, it is used for controlling the logical signal and the data processing of total system, controls and coordinate the work of other each several part.It mainly is made up of 2 74LS373 and a STC89C52RC single-chip microcomputer.74LS373 is used to latch the most-significant byte data of count value or the video data of least-significant byte data and display 8, can save the I/O mouth of single-chip microcomputer through 74LS373.
A display 8, it be used to show count value and handle after data, can remind the operator, strengthen the friendliness of using.It mainly is made up of the common anode charactron and the accessory circuit of 4 one.
A key-press module 9, it is used for operator's selection is passed to controller 7.Can carry out centering or two kinds of operations of zero clearing through its user.
Shown in Figure 2 is the operation interface of vehicle steering centering instrument of the present invention.
1 is crank; 2 displays for the charactron formation; 3 and 4 is two buttons.During use, at first centering instrument is connected with vehicle steering.Turn clockwise on earth through crank then, make vehicle steering turn right to the end, the button 3 that push on the interface this moment carries out zero clearing, and display can show complete 02 this moments.Then be rotated counterclockwise on earth through crank, the numerical value that display 2 shows during rotation can constantly increase again, and rotates to the end represent vehicle steering left-hand rotation on earth.At this moment, display 2 can show a numerical value.Next pressing keys 4, and the effect of button 4 is to carry out centering, and the numerical value that can find display 2 demonstrations this moment after pushing is the half the of numerical value before this.Again crank is turned clockwise at last; Can find during rotation that the numerical value that display 2 shows reduces, and when numerical value is reduced to 0, explains vehicle steering centering; This moment, two front-wheels of automobile were forward honest, can the vehicle steering forward be installed on the steering wheel shaft.
Claims (6)
1. vehicle steering centering instrument is characterized in that:
Comprise a controller, be responsible for all logical operations and digital operation, manage and coordinate the work of other each several part.
A coupling body is responsible for the driving automobile steering wheel shaft and is rotated, and rotation is transferred to other mechanism;
A scrambler is responsible for changing the rotation that the coupling body transmission is come the output of into 2 road pulse signals;
A mirror is responsible for differentiating through the pulse signal of scrambler output the rotation direction of vehicle steering to device, and to next stage mechanism output count signal and plus-minus counting control signal.
A counter is responsible for the count signal of phase detector output is carried out plus-minus counting;
A display is responsible for the count value that controller is handled is exported to the operator.
2. vehicle steering centering instrument according to claim 1; It is characterized in that controller adopts the STC89C52RC single-chip microcomputer as master chip; Responsible all numerals and logical operation are accomplished through 2 74LS373 management and coordination each several part: read the most-significant byte and the least-significant byte of the count value of counter output, the sequential switching that shows and read count value.
3. vehicle steering centering instrument according to claim 1 is characterized in that coupling body is the metal shaft of a band crank, and there is a gear at the middle part of axle.Crank is operator's a operation part, and crank drives metal shaft and rotates, and rotates thereby drive steering wheel shaft; Gear is used for rotation is delivered to scrambler.
4. vehicle steering centering instrument according to claim 1 is characterized in that scrambler is an incremental-rotating coder, exports 2 road pulse signals, is convenient to mirror and differentiates rotation direction to device.
5. vehicle steering centering instrument according to claim 1 is characterized in that adopting the mirror built by 74LS00 and 74LS74 to differentiate the rotation direction of bearing circle to device, and to next stage output count signal and control signal.
6. vehicle steering centering instrument according to claim 1 is characterized in that storing and run on the software section in the STC89C52RC single-chip microcomputer, comprising:
Data as software kernels read, the application program of data processing and data presentation;
Be used for the application program that single-chip microcomputer and each digit chip communicate and control;
Various application programs are optimized the firmware code that is produced for three grades through compiler level, c program code level, assembly level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100790595A CN102621346A (en) | 2012-03-23 | 2012-03-23 | Centering instrument for automobile steering wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100790595A CN102621346A (en) | 2012-03-23 | 2012-03-23 | Centering instrument for automobile steering wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102621346A true CN102621346A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100790595A Pending CN102621346A (en) | 2012-03-23 | 2012-03-23 | Centering instrument for automobile steering wheels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102621346A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405148A (en) * | 2016-10-19 | 2017-02-15 | 上海未来伙伴机器人有限公司 | Method for detecting forward and reverse rotation of motor through using photoelectric encoder |
| CN107487395A (en) * | 2016-12-23 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Device for steering wheel centering and the equipment for steering wheel centering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293349A (en) * | 1999-10-13 | 2001-05-02 | 均景中国有限公司 | Opparatus and method for determining the absolute position of object by using index type coder |
| US20030120468A1 (en) * | 2001-12-20 | 2003-06-26 | Ahmad Atiya M. | Embedded sensor steering shaft |
| CN101758855A (en) * | 2010-02-01 | 2010-06-30 | 中国科学院合肥物质科学研究院 | Steering gear of unmanned vehicle and control method thereof |
| CN201999062U (en) * | 2011-04-16 | 2011-10-05 | 金陵科技学院 | Automobile tire position and steering wheel turn number display device |
| CN202092596U (en) * | 2011-02-14 | 2011-12-28 | 浙江吉利汽车有限公司 | Stroke detection calibrator of automobile steering assembly |
-
2012
- 2012-03-23 CN CN2012100790595A patent/CN102621346A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293349A (en) * | 1999-10-13 | 2001-05-02 | 均景中国有限公司 | Opparatus and method for determining the absolute position of object by using index type coder |
| US20030120468A1 (en) * | 2001-12-20 | 2003-06-26 | Ahmad Atiya M. | Embedded sensor steering shaft |
| CN101758855A (en) * | 2010-02-01 | 2010-06-30 | 中国科学院合肥物质科学研究院 | Steering gear of unmanned vehicle and control method thereof |
| CN202092596U (en) * | 2011-02-14 | 2011-12-28 | 浙江吉利汽车有限公司 | Stroke detection calibrator of automobile steering assembly |
| CN201999062U (en) * | 2011-04-16 | 2011-10-05 | 金陵科技学院 | Automobile tire position and steering wheel turn number display device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405148A (en) * | 2016-10-19 | 2017-02-15 | 上海未来伙伴机器人有限公司 | Method for detecting forward and reverse rotation of motor through using photoelectric encoder |
| CN107487395A (en) * | 2016-12-23 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Device for steering wheel centering and the equipment for steering wheel centering |
| CN107487395B (en) * | 2016-12-23 | 2019-11-22 | 宝沃汽车（中国）有限公司 | Device for steering wheel centering and the equipment for steering wheel centering |
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Application publication date: 20120801 |