CN104764973A - Induction type wiring harness detection system and method - Google Patents
Induction type wiring harness detection system and method Download PDFInfo
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- CN104764973A CN104764973A CN201510158467.3A CN201510158467A CN104764973A CN 104764973 A CN104764973 A CN 104764973A CN 201510158467 A CN201510158467 A CN 201510158467A CN 104764973 A CN104764973 A CN 104764973A
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Abstract
The invention relates to an induction type wiring harness detection system and method. The system comprises a signal generator, an induction receiving circuit, a frequency-selecting detection circuit, a voice frequency oscillation circuit and an LED display circuit. The output end of the signal generator is connected with one end of each wiring harness to be detected, and the other ends of the wiring harnesses to be detected are connected to the input end of the induction receiving circuit. The output end of the induction receiving circuit is connected to the input end of the frequency-selecting detection circuit, and the output end of the frequency-selecting detection circuit is connected with the input end of the voice frequency oscillation circuit and the input end of the LED display circuit. A detection signal is connected at one end of each wiring harness to be detected, the other ends of the wiring harnesses to be detected are connected into the induction receiving circuit to be detected, and the LED display circuit is used for displaying a fault and can determine the wiring harness in fault and identify the broken wire in the wiring harness in fault and the breaking point position, so that the detection efficiency and precision of the wiring harnesses are improved.
Description
Technical field
The present invention relates to a kind of induction type wiring harness tester and detection method.
Background technology
Current, along with China's informatization is increasingly extensive with transformation, the covering of network is ubiquitous.Constituent parts and department LAN relate to numerous users, and what most local area network terminal adopted is twisted-pair feeder wiring, and in the daily servicing of LAN (Local Area Network), the connection state of netting twine is one of main contents that must check.At present, on market, existing netting twine break-point test instrument is adopt contact type measurement method mostly, relatively more accurate when detecting single line, but then requires great effort for the detection of the wire harness in LAN (Local Area Network), time-consuming, and efficiency is not high; Also have some contactless measuring instruments, as responded to detector, it can only determine certain the root wire in wire harness in the detection of wire harness, but can not determine it is which root wire in wire harness disconnects (having 8 wires in the wire harness of general netting twine), can only change whole netting twine in maintenance.
Therefore, how to provide a kind of efficiently, accurately can judge wire in wire harness break-make and to show the induction type wiring harness tester of its particular location and detection method be those skilled in the art's technical matterss urgently to be resolved hurrily.
Summary of the invention
The invention provides a kind of induction type wiring harness tester and detection method, to solve the problems of the technologies described above.
For solving the problems of the technologies described above, the invention provides a kind of induction type wiring harness tester, comprise signal generator, inductive receiving circuit, frequency-selecting testing circuit, audio frequency oscillating circuit and LED display circuit, the output terminal of described signal generator is connected with one end of wire harness to be measured, the other end of described wire harness to be measured is connected to the input end of described inductive receiving circuit, the output terminal of described inductive receiving circuit is connected to the input end of described frequency-selecting testing circuit, the output terminal of described frequency-selecting testing circuit is connected respectively with the described input end of audio frequency oscillating circuit and the input end of LED display circuit.
Preferably, described signal generator adopts single-chip microcomputer.
Preferably, described inductive receiving circuit is the amplifier of passband.
Preferably, described frequency-selecting testing circuit is phase-locked loop circuit.
Preferably, respective signal is converted to logic level signal by described phase-locked loop circuit respectively, and drives each LED in described LED display circuit respectively.
Preferably, logic level signal described in each road is converted into all-pass trigger pip by described phase-locked loop circuit, and described all-pass trigger pip triggers described audio frequency oscillating circuit.
Preferably, described audio frequency oscillating circuit is controlled dual-audio oscillator.
Preferably, the input end of described inductive receiving circuit is hand-held inductive connector.
Present invention also offers a kind of induction type wiring harness test method, adopt induction type wiring harness tester as above, comprise the steps: that described signal generator produces some roads sweep signal frequency, and access in wire corresponding to wire harness to be measured respectively, the induction that transmits of described wire harness to be measured receives by described inductive receiving circuit, and send into described frequency-selecting testing circuit after amplifying, respective signal is converted to logic level signal by described frequency-selecting testing circuit respectively, for driving described audio frequency oscillating circuit and LED display circuit.
Preferably, described signal generator adopts single-chip microcomputer to produce the signal of different frequency, adjust the transmitting boundary of amplitude in order to signalization of this signal, the signal receiving strength of described inductive receiving circuit regulates according to the signal transmitting boundary of described signal generator.
Compared with prior art, a kind of induction type wiring harness tester provided by the invention and detection method, this system comprises signal generator, inductive receiving circuit, frequency-selecting testing circuit, audio frequency oscillating circuit and LED display circuit, the output terminal of described signal generator is connected with one end of wire harness to be measured, the other end of described wire harness to be measured is connected to the input end of described inductive receiving circuit, the output terminal of described inductive receiving circuit is connected to the input end of described frequency-selecting testing circuit, the output terminal of described frequency-selecting testing circuit is connected respectively with the described input end of audio frequency oscillating circuit and the input end of LED display circuit.The present invention is by passing into detection signal in wire harness one end to be measured, other end access inductive receiving circuit detects, and utilize LED display circuit to show fault, fault wire harness can not only be determined, can determine that in wire harness, specifically a certain wire disconnects and breakpoint location, improves detection efficiency and the precision of wire harness simultaneously.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the induction type wiring harness tester of the embodiment of the invention.
In figure: 10-signal generator, 20-inductive receiving circuit, 30-frequency-selecting testing circuit, 40-audio frequency oscillating circuit, 50-LED display circuit, 60-wire harness to be measured.
Embodiment
In order to the technical scheme of more detailed statement foregoing invention, below list specific embodiment and carry out Proof Technology effect; It is emphasized that these embodiments are not limited to for illustration of the present invention limit the scope of the invention.
A kind of induction type wiring harness tester provided by the invention, as shown in Figure 1, comprise signal generator 10, inductive receiving circuit 20, frequency-selecting testing circuit 30, audio frequency oscillating circuit 40 and LED display circuit 50, the output terminal of described signal generator 10 is connected with one end of wire harness 60 to be measured, the other end of described wire harness to be measured 60 is connected to the input end of described inductive receiving circuit 20, the output terminal of described inductive receiving circuit 20 is connected to the input end of described frequency-selecting testing circuit 30, the output terminal of described frequency-selecting testing circuit 30 is connected respectively with the input end of described audio frequency oscillating circuit 40 and the input end of LED display circuit 50.The present invention is by passing into detection signal in wire harness 60 one end to be measured, other end access inductive receiving circuit 20 detects, and utilize LED display circuit 50 to show fault, fault wire harness can not only be determined, can determine that in wire harness, specifically a certain wire disconnects and breakpoint location, improves detection efficiency and the precision of wire harness simultaneously.In addition, this induction type wiring harness tester also can be measured the wire harness of other types accurately.
Preferably, described signal generator 10 adopts single-chip microcomputer, to have 8 wires in each wire harness 60 to be measured, single-chip microcomputer produces the signal of f1-f8 different frequency, correspondence is linked into (line sequence is corresponding with frequency) in 8 wires of wire harness 60 to be measured, wherein, wire is just equivalent to emitting antenna.
Preferably, described inductive receiving circuit 20 is the amplifier of passband, is specially high frequency small-signal amplifier, for reception and the amplification of signal.
Preferably, described frequency-selecting testing circuit 30 is phase-locked loop circuit, when wire harness 60 to be measured normal (without broken string), all respective frequencies signals are contained in the signal that inductive receiving circuit 20 inputs, respective frequencies signal is converted to logic level signal by phase-locked loop circuit respectively, drives and open each LED in LED display circuit 50 respectively; Each road logic level signal is converted to all-pass trigger pip simultaneously, this all-pass trigger pip triggers, opens audio oscillator circuit 40, and preferably, described audio frequency oscillating circuit 40 is controlled dual-audio oscillator, send double-audio signal when wire harness 60 to be measured is normal, represent that wire harness 60 to be measured is normal;
If have one or some conductor cord disconnections in wire harness 60 to be measured, then will lack one or several respective frequencies signals in inductive receiving circuit 20, LED display circuit 50 sends breakdown of conducting wires prompting; Also do not have all-pass trigger pip to export, the loudspeaker of audio frequency oscillating circuit 40 is without prompt tone, and prompting breakdown of conducting wires point, can directly reasonably keep in repair and reset, save time and cost simultaneously.
Preferably, the input end of described inductive receiving circuit 20 is hand-held inductive connector, is moved by hand-held inductive connector, can realize wire disconnection detection, and can determine the breakpoint location of wire on wire harness 60 to be measured.
Present invention also offers a kind of induction type wiring harness test method, adopt induction type wiring harness tester as above, comprise the steps: that described signal generator 10 produces some roads sweep signal frequency, and access in the wire of wire harness 60 correspondence to be measured respectively, the induction that transmits of described wire harness 60 to be measured receives by described inductive receiving circuit 20, and send into described frequency-selecting testing circuit 30 after amplifying, respective signal is converted to logic level signal by described frequency-selecting testing circuit 30 respectively, for driving described audio frequency oscillating circuit 40 and LED display circuit 50.
Preferably, described signal generator 10 adopts single-chip microcomputer to produce the signal of different frequency, adjust the transmitting boundary of amplitude in order to signalization of this signal, the signal receiving strength of described inductive receiving circuit 20 regulates according to the signal transmitting boundary of described signal generator 10.
It should be noted that, inductive receiving circuit 20 detect wire harness no problem time, can only illustrate wires all in wire harness be communicated with, but the alignment sequence that differs is right.
New wire harness is connected, except detection break-make, there is a need to detection line sequence.The line sequence accessing signal generator 10 at wire harness 60 two ends to be measured respectively detects delivery outlet, and the input port of hand-held induction detection tabs, and whether the order that the LED observing both sides lights is correct to determine netting twine center line sequence.This Some principles and structure and common wire harness detector similar, repeat no more herein.
In addition, when carrying out fault detect to original wire harness, generally do not need to carry out the detection of line sequence, as long as promptly find netting twine and judge the break-make situation of this netting twine.
In sum, a kind of induction type wiring harness tester provided by the invention and detection method, this system comprises signal generator 10, inductive receiving circuit 20, frequency-selecting testing circuit 30, audio frequency oscillating circuit 40 and LED display circuit 50, the output terminal of described signal generator 10 is connected with one end of wire harness 60 to be measured, the other end of described wire harness to be measured 60 is connected to the input end of described inductive receiving circuit 20, the output terminal of described inductive receiving circuit 20 is connected to the input end of described frequency-selecting testing circuit 30, the output terminal of described frequency-selecting testing circuit 30 is connected respectively with the input end of described audio frequency oscillating circuit 40 and the input end of LED display circuit 50.The present invention does not need two terminated lines, only by passing into detection signal in wire harness 60 one end to be measured, the other end is detected by hand-held induction detection tabs, and utilize LED display circuit 50 to show fault, fault wire harness can not only be determined, can determine that in wire harness, specifically a certain wire disconnects and breakpoint location, improves detection efficiency and the precision of wire harness simultaneously, and easy to use, quick, accurate.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. an induction type wiring harness tester, it is characterized in that, comprise signal generator, inductive receiving circuit, frequency-selecting testing circuit, audio frequency oscillating circuit and LED display circuit, the output terminal of described signal generator is connected with one end of wire harness to be measured, the other end of described wire harness to be measured is connected to the input end of described inductive receiving circuit, the output terminal of described inductive receiving circuit is connected to the input end of described frequency-selecting testing circuit, and the output terminal of described frequency-selecting testing circuit is connected respectively with the described input end of audio frequency oscillating circuit and the input end of LED display circuit.
2. induction type wiring harness tester as claimed in claim 1, is characterized in that, described signal generator adopts single-chip microcomputer.
3. induction type wiring harness tester as claimed in claim 1, it is characterized in that, described inductive receiving circuit is the amplifier of passband.
4. induction type wiring harness tester as claimed in claim 1, it is characterized in that, described frequency-selecting testing circuit is phase-locked loop circuit.
5. induction type wiring harness tester as claimed in claim 4, it is characterized in that, respective signal is converted to logic level signal by described phase-locked loop circuit respectively, and drives each LED in described LED display circuit respectively.
6. induction type wiring harness tester as claimed in claim 5, it is characterized in that, logic level signal described in each road is converted into all-pass trigger pip by described phase-locked loop circuit, and described all-pass trigger pip triggers described audio frequency oscillating circuit.
7. induction type wiring harness tester as claimed in claim 1, it is characterized in that, described audio frequency oscillating circuit is controlled dual-audio oscillator.
8. induction type wiring harness tester as claimed in claim 1, it is characterized in that, the input end of described inductive receiving circuit is hand-held inductive connector.
9. an induction type wiring harness test method, adopt as the induction type wiring harness tester in claim 1 ~ 8 as described in any one, it is characterized in that, comprise the steps: that described signal generator produces some roads sweep signal frequency, and access in wire corresponding to wire harness to be measured respectively, the induction that transmits of described wire harness to be measured receives by described inductive receiving circuit, and send into described frequency-selecting testing circuit after amplifying, respective signal is converted to logic level signal by described frequency-selecting testing circuit respectively, for driving described audio frequency oscillating circuit and LED display circuit.
10. induction type wiring harness test method as claimed in claim 9, it is characterized in that, described signal generator adopts single-chip microcomputer to produce the signal of different frequency, adjust the transmitting boundary of amplitude in order to signalization of this signal, the signal receiving strength of described inductive receiving circuit regulates according to the signal transmitting boundary of described signal generator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510158467.3A CN104764973B (en) | 2015-04-03 | 2015-04-03 | Induction type wiring harness tester and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510158467.3A CN104764973B (en) | 2015-04-03 | 2015-04-03 | Induction type wiring harness tester and detection method |
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| CN104764973A true CN104764973A (en) | 2015-07-08 |
| CN104764973B CN104764973B (en) | 2018-08-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223537A (en) * | 2015-11-06 | 2016-01-06 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter is visited one house after another pick-up unit and method |
| CN106918739A (en) * | 2015-12-25 | 2017-07-04 | 苏州宝时得电动工具有限公司 | Broken wire detection system |
| CN107064566A (en) * | 2017-06-12 | 2017-08-18 | 上海华岭集成电路技术股份有限公司 | A kind of method for protecting integrated circuit testing connecting line |
| CN107340451A (en) * | 2017-08-28 | 2017-11-10 | 镇江金海创科技有限公司 | A kind of General Electric's wire harness device for fast detecting and method |
| CN109116177A (en) * | 2018-06-11 | 2019-01-01 | 格力电器（武汉）有限公司 | Method and device for detecting line sequence of connecting line and computer storage medium |
| CN110763978A (en) * | 2019-10-15 | 2020-02-07 | 四川豪威尔信息科技有限公司 | Method for protecting integrated circuit test connecting line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105223537A (en) * | 2015-11-06 | 2016-01-06 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter is visited one house after another pick-up unit and method |
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| CN107064566A (en) * | 2017-06-12 | 2017-08-18 | 上海华岭集成电路技术股份有限公司 | A kind of method for protecting integrated circuit testing connecting line |
| CN107340451A (en) * | 2017-08-28 | 2017-11-10 | 镇江金海创科技有限公司 | A kind of General Electric's wire harness device for fast detecting and method |
| CN109116177A (en) * | 2018-06-11 | 2019-01-01 | 格力电器（武汉）有限公司 | Method and device for detecting line sequence of connecting line and computer storage medium |
| CN110763978A (en) * | 2019-10-15 | 2020-02-07 | 四川豪威尔信息科技有限公司 | Method for protecting integrated circuit test connecting line |
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| CN104764973B (en) | 2018-08-10 |
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