CN205809224U - Contactless PCB coil turn-to-turn short circuit detection device - Google Patents
Contactless PCB coil turn-to-turn short circuit detection device Download PDFInfo
- Publication number
- CN205809224U CN205809224U CN201620633220.2U CN201620633220U CN205809224U CN 205809224 U CN205809224 U CN 205809224U CN 201620633220 U CN201620633220 U CN 201620633220U CN 205809224 U CN205809224 U CN 205809224U
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- turn
- circuit
- probe
- signal
- short circuit
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model proposes a kind of contactless PCB coil turn-to-turn short circuit detection device, probe is the element that can produce magnetic field, for detecting PCB coil whether turn-to-turn short circuit, the output termination probe of programmed control frequency signal generator, probe is given for output frequency signal, the input termination probe of signal transformation circuit, for the signal of probe output is changed into voltage signal, the input termination signal transformation circuit of controller, output termination programmed control frequency signal generator and warning circuit, for controlling the generation of probe operating frequency and the voltage signal that signal transformation circuit inputs being compared with reference voltage, judge PCB coil whether turn-to-turn short circuit.The advantage that this utility model has low cost, test period is short, testing efficiency is high, accuracy is high.
Description
Technical field
This utility model belongs to detection device technique field, is specifically related to a kind of contactless PCB coil turn-to-turn short circuit
Detection device.
Background technology
Nowadays electronic product Highgrade integration develops, in order to realize the small size of power module, high-power, highly reliable
Property, transformer coil has been integrated on pcb board by substantial amounts of power transfer module (particularly communication power supply).But based at present
The processing technique of PCB coil, probability can there is turn-to-turn short circuit problem in PCB coil.Thus have also been introduced new problem, reduce electricity
The maintainability of source module, if PCB coil is in the course of processing, occurs in that coil turn-to-turn short circuit, and this PCB can only scrap place
Reason.At present conventional method of testing is as follows: flying probe, can only detect the short circuit between outlet and line, for turn-to-turn short circuit without
Method have detected；Coil resistance is tested, owing to PCB coil internal resistance is milliohm level, even lower, test instrunment and test operation
Asking the highest, probe all can cause with PCB contact resistance variation etc. and survey by mistake, and cost is high, accuracy is low, single test period is long.
Practicality is low；After welding device, verified by functional test, it is possible to go out turn-to-turn short circuit by function difficulty indirect detection, but the used time
Long, cost is high, once going out turn-to-turn short circuit, whole PCB version and the device welded above will be scrapped.
Utility model content
Technical problem to be solved in the utility model is to overcome lacking of existing PCB coil turn-to-turn short circuit detection device
Point, it is provided that a kind of simple in construction, low cost, the contactless PCB coil turn-to-turn short circuit that easy to operate, accuracy is high detection dress
Put.
Solve above-mentioned technical problem and be the technical scheme is that a kind of contactless PCB coil turn-to-turn short circuit detection dress
Put, including: controller, programmed control frequency signal generator, probe, signal transformation circuit, warning circuit；Probe is for can produce magnetic field
Element, be used for detecting PCB coil whether turn-to-turn short circuit；The output termination probe of programmed control frequency signal generator, is used for exporting
Frequency signal gives probe；The input termination probe of signal transformation circuit, for changing into voltage signal by the signal of probe output；
Input termination signal transformation circuit, output termination programmed control frequency signal generator and the warning circuit of controller, is used for controlling to visit
Head operating frequency generation and by signal transformation circuit input voltage signal compare with reference voltage, it is judged that whether PCB coil
Turn-to-turn short circuit.
Probe of the present utility model is inductance L.
Programmed control frequency signal generator of the present utility model is square wave signal generator.
Signal transformation circuit of the present utility model is: the input of the first not circuit termination programmed control frequency signal generator,
Outfan was connected resistance R1 and is connect one end of inductance L and connect the input of the second not circuit, the outfan of the second not circuit
One end of electric capacity C is connect by resistance R2, the other end ground connection of electric capacity C, the other end ground connection of inductance L.
Have employed technique scheme, the beneficial effects of the utility model are: this utility model uses connect non-with PCB coil
Touch, judge whether PCB coil exists turn-to-turn short circuit by the presence or absence of detection closed loop, there is low cost, test week
The advantage that phase is short, testing efficiency is high, accuracy is high, this utility model can also apply to other needs and detects whether that there is closed loop returns
In the scene on road, use can be widely popularized.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of one embodiment of this utility model.
Fig. 2 is probe 1 and the electronic circuit schematic diagram of signal transformation circuit 2 in Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
At Fig. 1, in 2, the contactless PCB coil turn-to-turn short circuit detection device of the present embodiment by popping one's head in 1, signal shaping electricity
Road 2, warning circuit 3, controller 4, programmed control frequency signal generator 5 connect and compose.The input termination programmed control frequency signal of probe 1
Generator 5, output termination signal transformation circuit 2, be placed on PCB coil center by probe 1 during test, detects PCB coil whether circle
Between short circuit, programmed control frequency signal generator 5 output termination controller 4, programmed control frequency signal generator 5 for square-wave signal generation
Device, for the square-wave signal for probe 1 one frequency stable of offer, the output termination controller 4 of signal transformation circuit 2, signal
Shaping circuit 2 is for being converted into voltage signal by the signal of probe 1 output, and this voltage signal exports controller 4, reports to the police
The input termination controller 4 of circuit 3, controller 4 produces the square-wave signal of frequency stable for controlling party wave generator, with
And receive the voltage signal that signal transformation circuit 2 sends, and this voltage signal is compared with reference voltage, it is judged that PCB line
Whether circle exists turn-to-turn short circuit, and when detecting that PCB coil exists short circuit, warning circuit provides acousto-optic hint.
The signal transformation circuit of the present embodiment is by the first not circuit, the second not circuit, inductance L, resistance R1, resistance
R2, electric capacity C connect and compose, and the input termination square wave signal generator of the first not circuit, outfan meet inductance L by resistance R1
One end and connect the input of the second not circuit, the outfan of the second not circuit by resistance R2 connect electric capacity C one end and
Controller, the other end ground connection of electric capacity C, the other end ground connection of inductance L.Inductance L is the probe of the present embodiment simultaneously, square-wave signal
Generator to the square-wave signal of inductance L one frequency stable of input, then produces an alternating magnetic field, through by electricity around inductance L
Peaker output signal Vo that sense L and resistance R1 connects and composes, signal Vo is through by the second not circuit and resistance R2 and electricity
Hold the shaping circuit that C connects and composes, obtain a stable magnitude of voltage Vref.
During test, by inductance L through PCB coil, square wave signal generator is to the square wave of inductance L one frequency stable of input
Signal, then produce an alternating magnetic field around inductance L, defeated after the RL peaker connected and composed by inductance L and resistance R1
Go out signal Vo, to obtaining a stable magnitude of voltage Vmeasue, the magnitude of voltage that controller will receive after the Vo shaping of this signal
Vmeasue contrasts with magnitude of voltage Vref under normal circumstances:
If PCB coil exists turn-to-turn short circuit, owing to the PCB coil of turn-to-turn short circuit forms closed loop, inductance can be cut
The magnetic line of force around, causes significantly change different from normal voltage value Vref magnitude of voltage Vmeasue output；
If PCB coil does not exist turn-to-turn short circuit, owing to PCB coil is formed without closed loop, inductance week will not be cut
The magnetic line of force enclosed, then Vmeasue output is not changed in, identical with normal voltage value Vref；
By the change between contrast Vmeasue and Vref, thus analyze whether PCB coil exists turn-to-turn short circuit.
This utility model uses the presence or absence of detection closed loop to judge whether PCB coil exists turn-to-turn short circuit.Cause
This, in addition to for PCB coil turn-to-turn short circuit, other needs to detect whether to exist in the application scenarios of closed loop and all can make
With.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Within the spirit of utility model and principle, any modification, equivalent substitution and improvement etc. made, should be included in this utility model
Protection domain within.
Claims (4)
1. a contactless PCB coil turn-to-turn short circuit detection device, it is characterised in that including: controller, programmed control frequency signal
Generator, probe, signal transformation circuit, warning circuit；Described probe is the element that can produce magnetic field, is used for detecting PCB line
Enclose whether turn-to-turn short circuit；The output termination probe of described programmed control frequency signal generator, gives probe for output frequency signal；
The input termination probe of described signal transformation circuit, for changing into voltage signal by the signal of probe output；Described control
Input termination signal transformation circuit, output termination programmed control frequency signal generator and the warning circuit of device processed, is used for controlling probe
The generation of operating frequency and the voltage signal that signal transformation circuit inputs is compared with reference voltage, it is judged that PCB coil whether circle
Between short circuit.
Contactless PCB coil turn-to-turn short circuit the most according to claim 1 detection device, it is characterised in that: described spy
Head is inductance L.
Contactless PCB coil turn-to-turn short circuit the most according to claim 1 detection device, it is characterised in that: described journey
Control frequency of signal generator is square wave signal generator.
Contactless PCB coil turn-to-turn short circuit the most according to claim 1 detection device, it is characterised in that described signal
Shaping circuit is: the input termination programmed control frequency signal generator of the first not circuit, outfan were connected resistance R1 and met inductance L
One end and connect the input of the second not circuit, the outfan of the second not circuit connects one end of electric capacity C by resistance R2, electricity
Hold the other end ground connection of C, the other end ground connection of inductance L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620633220.2U CN205809224U (en) | 2016-06-15 | 2016-06-15 | Contactless PCB coil turn-to-turn short circuit detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620633220.2U CN205809224U (en) | 2016-06-15 | 2016-06-15 | Contactless PCB coil turn-to-turn short circuit detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205809224U true CN205809224U (en) | 2016-12-14 |
Family
ID=57505443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620633220.2U Expired - Fee Related CN205809224U (en) | 2016-06-15 | 2016-06-15 | Contactless PCB coil turn-to-turn short circuit detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205809224U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362993A (en) * | 2018-01-20 | 2018-08-03 | 江苏本川智能电路科技股份有限公司 | A kind of measuring device and its measurement method for multilayer wire girth sheets |
| DE202021106814U1 (en) | 2021-12-15 | 2022-01-03 | Biotronik Se & Co. Kg | Circuit structure for detecting and bypassing opens and shorts in a PCB based coil |
-
2016
- 2016-06-15 CN CN201620633220.2U patent/CN205809224U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362993A (en) * | 2018-01-20 | 2018-08-03 | 江苏本川智能电路科技股份有限公司 | A kind of measuring device and its measurement method for multilayer wire girth sheets |
| DE202021106814U1 (en) | 2021-12-15 | 2022-01-03 | Biotronik Se & Co. Kg | Circuit structure for detecting and bypassing opens and shorts in a PCB based coil |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20180615 |