CN204495947U - Induction type wiring harness tester - Google Patents
Induction type wiring harness tester Download PDFInfo
- Publication number
- CN204495947U CN204495947U CN201520201045.5U CN201520201045U CN204495947U CN 204495947 U CN204495947 U CN 204495947U CN 201520201045 U CN201520201045 U CN 201520201045U CN 204495947 U CN204495947 U CN 204495947U
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- circuit
- wire harness
- induction type
- input end
- type wiring
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to 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, 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.The utility model 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.
Description
Technical field
The utility model relates to a kind of induction type wiring harness tester.
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 the induction type wiring harness tester showing its particular location technical matters that to be those skilled in the art urgently to be resolved hurrily.
Utility model content
The utility model provides a kind of induction type wiring harness tester, to solve the problems of the technologies described above.
For solving the problems of the technologies described above, the utility model 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.
Compared with prior art, a kind of induction type wiring harness tester that the utility model provides, 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.The utility model 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 utility model one embodiment.
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 the above-mentioned utility model of more detailed statement, below list specific embodiment and carry out Proof Technology effect; It is emphasized that these embodiments are not limited to for illustration of the utility model limit scope of the present utility model.
A kind of induction type wiring harness tester that the utility model provides, 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 utility model 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.
Particularly, the job step of induction type wiring harness tester of the present utility model is as follows: 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 that the utility model provides, 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 utility model 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 utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (8)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520201045.5U CN204495947U (en) | 2015-04-03 | 2015-04-03 | Induction type wiring harness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520201045.5U CN204495947U (en) | 2015-04-03 | 2015-04-03 | Induction type wiring harness tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204495947U true CN204495947U (en) | 2015-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520201045.5U Expired - Fee Related CN204495947U (en) | 2015-04-03 | 2015-04-03 | Induction type wiring harness tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204495947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764973A (en) * | 2015-04-03 | 2015-07-08 | 苏州经贸职业技术学院 | Induction type wiring harness detection system and method |
| CN109557407A (en) * | 2018-12-21 | 2019-04-02 | 湖南金泰检测检验有限公司 | Earth conductor cable breakpoint of cable position detecting circuit and method |
-
2015
- 2015-04-03 CN CN201520201045.5U patent/CN204495947U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764973A (en) * | 2015-04-03 | 2015-07-08 | 苏州经贸职业技术学院 | Induction type wiring harness detection system and method |
| CN109557407A (en) * | 2018-12-21 | 2019-04-02 | 湖南金泰检测检验有限公司 | Earth conductor cable breakpoint of cable position detecting circuit and method |
| CN109557407B (en) * | 2018-12-21 | 2021-01-26 | 湖南金泰环保科技有限公司 | Circuit and method for detecting breakpoint position of grounding wire cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20170403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |