CN103743999A - Device and method for finding breakpoint position of electric wire/cable - Google Patents
Device and method for finding breakpoint position of electric wire/cable Download PDFInfo
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- CN103743999A CN103743999A CN201310743528.3A CN201310743528A CN103743999A CN 103743999 A CN103743999 A CN 103743999A CN 201310743528 A CN201310743528 A CN 201310743528A CN 103743999 A CN103743999 A CN 103743999A
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Abstract
The invention relates to a device and a method for finding the breakpoint position of an electric wire/cable. The device comprises a power supply, a current probe with a detection groove, and an oscilloscope, wherein the anode of the power supply is connected with one end of the breakpoint of the electric wire/cable; the current probe is connected to a channel of the oscilloscope; one end, which is connected with the anode of the power supply, of the electric wire/cable is wound in the detection groove of the current probe; the power supply is a direct-current power supply in a range of 0-30V; a switching valve for switching on/off the detection groove is further arranged outside the current probe detection groove. According to the device and the method thereof, the direct-current power supply and the detection groove are adopted, so that the problems of danger in using commercial power and difficulty in moving a pen of a universal meter along a lead during detection in the prior art are solved.
Description
Technical field
The present invention relates to detection technique field, be specifically related to breakpoint location and detect the field of searching.
Background technology
Because electric wire, cable outer wrap insulated hull, when electric wire, the inner disconnection of cable, be difficult to determine the position of breakpoint.
At present, the method that detects electric wire, breakpoint of cable has many kinds, as Chinese patent 201110222522.2 discloses a kind of " detecting the method for electric wire breakpoint by digital multimeter ", claim 1 is: the method that detects electric wire breakpoint by digital multimeter, it is characterized in that the other end is unsettled there being electric wire/cable one end of breakpoint to be connected on the live wire of 220V civil power; Digital multimeter is pulled out to the gear to AC2V, from the live wire incoming end of electric wire/cable, pinch the nib of black meter pen with a hand, another hand slowly moves red test pencil along the insulated hull of wire, the stable magnitude of voltage that now display screen shows; When hot test pencil moves to somewhere, the voltage that display screen shows drops to suddenly 0. more than zero volt, from this position to the 14-16cm of live wire incoming end direction, is the breakpoint place of electric wire/cable.The method is simple to operate, but will use the civil power of AC220V, has the possibility of getting an electric shock; And for thin especially wire, along wire, move with the test pencil of multimeter, operate and also have certain difficulty.
Summary of the invention
While detecting in prior art in order overcoming, to use the danger of civil power and the test pencil of multimeter along the difficulty of wire move operation, to the invention provides a kind of devices and methods therefor of searching electric wire breakpoint location.
Technical scheme of the present invention is: a kind of device of searching electric wire breakpoint location, this device comprises power supply, the positive pole of power supply connects one end of electric wire breakpoint, this device also comprises the current probe and the oscillograph that are provided with detection groove, current probe is connected on oscillographic passage, and electric wire connects one end of positive source in the detection groove of current probe.Described power supply is the direct supply of scope at 0-30V.Wherein the outside of current probe detection groove is also provided with to open and closes the switch valve of surveying groove.
Search a method for electric wire breakpoint location, its step comprises: step 1, connecting circuit, and having the electric wire of breakpoint or cable one end to receive the anode of direct supply, the other end is unsettled; Step 2, open direct supply, regulation voltage, then close power source; Step 3, from the anode of power supply, by electric wire to be measured or cable, in the detection groove of current probe, the closing switch block of valve is lived the detection groove of current probe; Step 4, open oscillograph, oscillograph setting parameter is set; Step 5, open direct supply fast, close power source, regulate oscillograph, capture switch moment the electric wire to be measured or waveform of cable, read the peak-to-peak value of waveform, peak-to-peak value is stable; Step 6, from the anode of power supply, successively backward by electric wire to be measured or cable in the detection groove of current probe, repeating step five, reads the peak-to-peak value of waveform.In described step 6, when recording peak-to-peak value, compare peak-to-peak value stationary value and reduce, continue to record peak-to-peak value sudden change, in the interval that breakpoint reduces in stationary value; Then divide breakpoint interval, repeating step five, until find breakpoint.
The present invention has following good effect: the invention discloses a kind of devices and methods therefor of searching electric wire breakpoint location, the method of this oscillograph, current probe detection electric wire breakpoint for device, also makes the function of oscillograph, current probe further expand simultaneously.The present invention only needs the direct supply of 0-30v and is wound around the detection groove of wire, and when having solved the possibility of using civil power to have electric shock in prior art and having used multimeter, test pencil is along the problem of wire move operation difficulty.
Accompanying drawing explanation
Fig. 1 is work schematic diagram of the present invention;
Fig. 2 is the structural representation that current probe of the present invention is surveyed groove;
In figure, 1 switch valve that is current probe, the 2 detection grooves that are current probe.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is as the effect of the mutual alignment between the shape of related each member, structure, each several part and annexation, each several part and principle of work, manufacturing process and operation using method etc., be described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present invention, technical scheme.
A kind of device of searching electric wire breakpoint location includes oscillograph, current probe and direct supply; The direct supply of the preferred 0-30V of direct supply, under China's regulation dry environment, safe voltage is 36V, the direct supply of 0-30V scope has guaranteed user's safety, has reduced the possibility of getting an electric shock.As shown in Figure 2, current probe is provided with surveys groove 2, the outside of surveying groove 2 is also provided with switch valve 1, and electric wire to be measured can be wrapped in surveys 2 li of grooves, and switch valve 1 pushes away forward, can closedly survey groove 2, to pusher, to open and survey groove 2, the rear electric wire of closing switch valve 1 one end is fixed on to be surveyed in groove 2, do not need current probe to move along wire, easy to operate simple.Current probe is connected on oscillographic passage, and one end of electric wire breakpoint connects the positive pole of direct supply, and the other end is unsettled, from the anode of power supply, electric wire to be measured or cable, in the detection groove of current probe, is enclosed around 5-10.
The method of searching electric wire breakpoint location is: step 1, having the electric wire of breakpoint or cable one end to receive an anode for direct supply, the other end is unsettled.Step 2, open direct supply, regulation voltage, if the longer voltage of electric wire to be detected or cable just tunes up, otherwise, just turn down, prevent that peak-to-peak value is too small or much, and then close power source.Step 3, from the anode of power supply, by electric wire to be measured or cable, around 2 li of the detection grooves of current probe, around 5-10 circle, closing switch valve 1 pins the detection groove 2 of current probe, the slip while having avoided current probe detection.Step 4, open oscillograph, current probe is connected on channel oscilloscope, oscillograph is set to laterally " the every lattice of 200mA " of " standard sample pattern ", " rising edge triggering ", " DC coupling ".Step 5, high-speed switch, shut direct supply, regulate oscillograph to trigger horizontal line, capture switch moment electric wire to be measured or cable around magnetic be converted into electric waveform, read the peak-to-peak value of waveform, peak-to-peak value is stabilized in about a certain value; Step 6, from the anode of power supply, backward electric wire to be measured or cable are moved in the detection groove of current probe successively, repeating step five, reads the peak-to-peak value of waveform.Enclose enter electric wire or cable length in the detection groove of current probe at every turn and be designated as a, as shown in Figure 1, when measuring AB section, record peak-to-peak value and be stabilized in about a certain value; While surveying again CB section, record peak-to-peak value and slightly decline; While surveying DC section again, record peak-to-peak value and drop to suddenly several amperes of zero points, this breakpoint location is intersegmental at CB.Again CB section is divided into CC ', BC ' section, respectively CC ', BC ' section is moved into 2 li of the detection grooves of current probe, breakpoint is recording in the section that peak-to-peak value is less.According to this method, can progressively breakpoint in-scope be dwindled, until find breakpoint.
In experiment, adopt the serial oscillograph of Agilent 3,000, model N2893A current probe, coiling 10 circles, when DC voltage is adjusted to 6.5v, the peak-to-peak value of grabbing is 1.23A; When DC voltage is adjusted to 13v, the peak-to-peak value of grabbing is 1.31A; When DC voltage is adjusted to 30v, the peak-to-peak value of grabbing is 1.45A.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (5)
1. search the device of electric wire breakpoint location for one kind, this device comprises power supply, the positive pole of power supply connects one end of electric wire breakpoint, it is characterized in that, this device also comprises the current probe and the oscillograph that are provided with detection groove (2), current probe is connected on oscillographic passage, and it is inner around the detection groove (2) of current probe that electric wire connects one end of positive source.
2. the device of searching electric wire breakpoint location according to claim 1, is characterized in that, described power supply is the direct supply of scope at 0-30V.
3. the device of searching electric wire breakpoint location according to claim 1, is characterized in that, the outside of described current probe detection groove (2) is also provided with to open closes the switch valve (1) of surveying groove.
4. according to the method for searching electric wire breakpoint location described in claim 1-3 any one, it is characterized in that, its step comprises:
Step 1, connecting circuit, having the electric wire of breakpoint or cable one end to receive the anode of direct supply, the other end is unsettled;
Step 2, open direct supply, regulation voltage, then close power source;
Step 3, from the anode of power supply, by inner around the detection groove (2) of current probe to electric wire to be measured or cable, closing switch valve (1) pins the detection groove (2) of current probe;
Step 4, open oscillograph, oscillograph setting parameter is set;
Step 5, open fast, shut direct supply, regulate oscillograph, capture switch moment the electric wire to be measured or waveform of cable, read the peak-to-peak value of waveform, peak-to-peak value is stable;
Step 6, from the anode of power supply, successively backward by inner around the detection groove (2) of current probe to electric wire to be measured or cable, repeating step five, reads the peak-to-peak value of waveform.
5. method of searching electric wire breakpoint location according to claim 4, is characterized in that, in described step 6, when recording peak-to-peak value, compares peak-to-peak value stationary value and reduces, and continues to record peak-to-peak value sudden change, in the interval that breakpoint reduces in stationary value; Then divide breakpoint interval, repeating step five, until find breakpoint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310743528.3A CN103743999B (en) | 2013-12-30 | 2013-12-30 | A kind of device and method searching electric wire breakpoint location |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310743528.3A CN103743999B (en) | 2013-12-30 | 2013-12-30 | A kind of device and method searching electric wire breakpoint location |
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| CN103743999A true CN103743999A (en) | 2014-04-23 |
| CN103743999B CN103743999B (en) | 2016-04-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632637A (en) * | 2014-10-02 | 2016-06-01 | 谢安军 | High-voltage power transmission power cable system |
| CN105632639A (en) * | 2014-10-15 | 2016-06-01 | 谢安军 | High-voltage transmission power cable |
| CN112345970A (en) * | 2020-11-06 | 2021-02-09 | 湖南常德牌水表制造有限公司 | Intelligent inspection method for abnormal faults of acquisition equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02259477A (en) * | 1988-12-24 | 1990-10-22 | Stc Plc | Detection of fault position for submarine optical fiber cable |
| US5684408A (en) * | 1995-05-09 | 1997-11-04 | Hubbell Incorporated | Protective grounding jumper cable testing method |
| CN201408238Y (en) * | 2009-04-17 | 2010-02-17 | 武汉市黄鹤电线电缆一厂 | Square wave cable wire breakage position indicator |
| CN102305902A (en) * | 2011-08-04 | 2012-01-04 | 江苏圣安电缆有限公司 | Method for detecting breakpoint of electric wire and cable by using digital multimeter |
| CN202471889U (en) * | 2012-03-12 | 2012-10-03 | 芦金寅 | Cable breakpoint finding instrument |
-
2013
- 2013-12-30 CN CN201310743528.3A patent/CN103743999B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02259477A (en) * | 1988-12-24 | 1990-10-22 | Stc Plc | Detection of fault position for submarine optical fiber cable |
| US5684408A (en) * | 1995-05-09 | 1997-11-04 | Hubbell Incorporated | Protective grounding jumper cable testing method |
| CN201408238Y (en) * | 2009-04-17 | 2010-02-17 | 武汉市黄鹤电线电缆一厂 | Square wave cable wire breakage position indicator |
| CN102305902A (en) * | 2011-08-04 | 2012-01-04 | 江苏圣安电缆有限公司 | Method for detecting breakpoint of electric wire and cable by using digital multimeter |
| CN202471889U (en) * | 2012-03-12 | 2012-10-03 | 芦金寅 | Cable breakpoint finding instrument |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632637A (en) * | 2014-10-02 | 2016-06-01 | 谢安军 | High-voltage power transmission power cable system |
| CN105632639A (en) * | 2014-10-15 | 2016-06-01 | 谢安军 | High-voltage transmission power cable |
| CN112345970A (en) * | 2020-11-06 | 2021-02-09 | 湖南常德牌水表制造有限公司 | Intelligent inspection method for abnormal faults of acquisition equipment |
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| Publication number | Publication date |
|---|---|
| CN103743999B (en) | 2016-04-27 |
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