CN2337567Y - Electric appliance line testing and repairing instrument for vehicle - Google Patents
Electric appliance line testing and repairing instrument for vehicle Download PDFInfo
- Publication number
- CN2337567Y CN2337567Y CN 98244668 CN98244668U CN2337567Y CN 2337567 Y CN2337567 Y CN 2337567Y CN 98244668 CN98244668 CN 98244668 CN 98244668 U CN98244668 U CN 98244668U CN 2337567 Y CN2337567 Y CN 2337567Y
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- interface
- resistance
- circuit
- operational amplifier
- dual operational
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to an electric appliance line testing and repairing instrument for a vehicle. In the repair of electric appliance of vehicles, the phenomena of short circuit, broken circuit, and bonding in the inner part of a wire bunch often occur, and a multimeter is often used for measuring with a bare wire; although the multimeter can detect the three faults, accurate positions can not be detected. The product comprises a launcher shell 1 and a receiver shell 2; a circuit board of the launcher 4 with an overhang chuck 3 is arranged in the launcher shell 1, a detection probe 5, the circuit board of a receiver 6, a power amplifier circuit 7 connected with a receiver circuit, and a loud-speaker 8 are respectively arranged on the receiver shell 2. The product is a positioning and detection instrument for circuit fault, and the product can not break insulating coatings.
Description
The utility model relates to a kind of car electrics line maintenance instrument, comprises short-circuit detecting and the detection of opening circuit.
In the maintenance of auto electric circuit, through regular meeting run into wire harness inside short circuit, open circuit and the bonding phenomenon, generally be to measure with multimeter.But,, can not survey the accurate position of three kinds of faults though multimeter can be measured this three kinds of malfunctions.And high-grade automobile does not allow wire jumper yet or broadcasts out insulation course and detect with multimeter.Even general-utility car also can be because of the insulation course breakage loses the attractive in appearance of circuit and the insulation resistance of wire harness is descended, thereby influences the safety index of automobile.
The purpose of this utility model is to provide a kind of car electrics line maintenance instrument, the insulated hull that it can not destroy wire harness by electronic induction measure wire harness short circuit, open circuit and the accurate position of bonding.
The purpose of this utility model is achieved in that its composition comprises: launcher shell, receiver shell, transmitter line plate with overhanging dop is housed, the power amplifier circuit and the loudspeaker that detection probe and receiver wiring board are arranged on the described receiver shell and link to each other in the launcher shell with described receiver circuit.
Above-mentioned car electrics line maintenance instrument is characterized in that: described transmitter circuit board is a KD-9561 music integrated circuit plate.
Above-mentioned car electrics line maintenance instrument is characterized in that: described receiver circuit comprises through the K1 switch selects the short-circuit detecting circuit (IC1) of conducting, broken circuit detection circuit (IC2) and (IC3) through K2 switch selection conducting, the direct supply that links to each other with switch.
Advantage of the present utility model is:
1. employing electromagnetic induction principle, can the insulated hull that does not destroy wire harness by electronic induction measure wire harness short circuit, open circuit and the accurate position of bonding
2. simple in structure, cost is low.
3. short circuit, short circuit place judge with sound that directly testing result directly, accurately.
4. detect rapidly, increase work efficiency.
Accompanying drawing 1 is a structural representation of the present utility model.Accompanying drawing 2 is transmitter electrical schematic diagrams of this product.
Accompanying drawing 3 is receiver electrical schematic diagrams of this product.
Be further described below in conjunction with accompanying drawing: embodiment 1:
A kind of car electrics line maintenance instrument, its composition comprises: launcher shell 1, receiver shell 2, transmitter line plate 2 (can adopt the KD-9561 music integrated circuit) with overhanging dop a and overhanging dop b is housed in the launcher shell 1, the power amplifier circuit 7 and the loudspeaker 8 that receiver wiring board 6 are housed and link to each other with described receiver circuit in detection probe 5 these shells are arranged on the receiver shell 2.Emitter and receiver also can be contained in the housing.Embodiment 2:
Embodiment 1 described product, its receiver circuit comprise through the K1 switch select the short-circuit detecting circuit (IC1) of conducting, the broken circuit detection circuit (IC2) of selecting conducting through the K2 switch (IC3), the direct supply that links to each other with switch.Embodiment 3:
The product of embodiment 1 and embodiment 2, its short-circuit detecting circuit (IC1) comprising: be installed in the receiving coil L in the described detection probe, capacitor C 1 of connecting with described receiving coil L and resistance R 1 are connected on the positive plate interface (2) of dual operational amplifier IC1 ', the other end of described receiving coil L links to each other with the negative level interface (3) of described dual operational amplifier IC1 ' after the capacitor C 2 of parallel connection and resistance R 2 ground connection, the positive grade of last end of interface (2) that resistance R 3 one ends that carry out the gain of one-level feedback and secondary amplifier are connected described dual operational amplifier IC1 ' is connected on the output interface (1) of described dual operational amplifier IC1 ', the output interface of described dual operational amplifier IC1 ' (1) links to each other with the negative level interface (6) of described dual operational amplifier IC1 ' through the series coupled circuit of resistance R 4 and capacitor C 3, the interface of described dual operational amplifier IC1 ' (3) links to each other with (5) after communicate with the K switch 1 that is connected described direct supply behind the biasing resistor R6 with after the 9v output interface (8) of described dual operational amplifier IC1 ' links to each other, the two ends of feedback resistance R5 link to each other with negative level interface (6) with the output interface (7) of described dual operational amplifier IC1 ' respectively, and the output terminal of described dual operational amplifier IC1 ' (7) connects the port (7) of described power amplifier after capacitor C 4 and resistance R 11.Embodiment 4:
The described product of the above embodiments, its broken circuit detection circuit (IC2) comprising with (IC3): the described detection probe that links to each other with the interface (3) of dual operational amplifier IC2 ', the interface (6) of described dual operational amplifier IC2 ' and " " between be connected with by capacitor C 2 ', capacitor C 3 ', capacitor C 4 ', capacitor C 5 ' and resistance R 4 ', resistance R 5 ', resistance R 6 ', the level Four Hi-pass filter G of resistance R 8 ' composition, simultaneously, between the 9v interface (7) of the interface (3) of described dual operational amplifier IC2 ' and this dual operational amplifier IC2 ', be in series with resistance R 1 ' and resistance R 2 ', described resistance R 1 ' and described resistance R 2 ' between extension line by parallel resistor R3 ' capacitor C 1 ' connect " ", the output interface (6) of the interface of described dual operational amplifier IC2 ' (2) and this dual operational amplifier IC2 ' links to each other, described capacitor C 5 ' an end through resistance R 7 ' be connected to jointly on the K switch 2 that links to each other with described direct supply with the 9v interface (7) of described dual operational amplifier IC2 ' and the 9v interface (8) of dual operational amplifier IC3 ', the lead-in wire that is connected of described resistance R 4 and resistance R 6 links to each other with output interface (1) with interface (2) and the interface (5) of described dual operational amplifier IC3 ', the interface of described dual operational amplifier IC3 ' (7) is through the resistance R 9 of series connection, resistance R 10 and capacitor C 6 connect " ", wherein, resistance R 9 resistance, tap between the R10 links to each other with the interface (6) of described dual operational amplifier IC3 ', the interface of described dual operational amplifier IC3 ' (7) through capacitor C 7 ' after connect the interface (7) of described power amplifier.Embodiment 5:
The described product of the foregoing description, its power amplifier circuit comprises: power amplifier, its interface (7) links to each other with short-circuit detecting circuit with described broken circuit detection circuit, the interface of described power amplifier (7) links to each other with the interface (8) of this power amplifier through the series circuit of resistance (12 ') and electric capacity (12 '), the line of described resistance (12 ') and described electric capacity (12 ') connect " ", the interface of described power amplifier (4) connect " " interface (2) of described power amplifier connects direct supply, the interface of described power amplifier (3) through electric capacity (13) with connect after described loudspeaker links to each other " ".
The principle of work of this product:
1. substitute the audible signal generator with common music integrated circuit plate, integrated high volume is little.
2. about the principle of the opening circuit of circuit, bonding fault detect: (K switch 1 conducting) L coil is when being loaded with the lead of sound signal, coil produces signal by induction, deliver to half of dual operational amplifier IC1 ' by C1, R1, anti-phase output is amplified, deliver to second half (6) input of IC1 ' by IC1 ' through C3, R4 R-C coupling by IC1 ' (1) output, do further to amplify, lifting is coupled to the power amplifier amplification by the lifting signal of (7) output of IC1 ' through capacitor C 4, to drive the loudspeaker sounding.(gain that R2 plays the feedback of first amplifier and second level amplifier plays the retroactive effect of second level amplifier with R5.)
3. the principle that detects about the short trouble of circuit: (K switch 2 conductings) are with the input end of detection probe near transmitter, the R6 biasing resistor, can improve input impedance, make detection probe can pick up faint sound signal, IC3a, C2, C3, C4, C5, R4, R5, R6, R8 form the level Four Hi-pass filter, and the backdrop that amplifies is decayed.Sound signal is amplified by IC2, and (6) locate output, are coupled to power amplifier through capacitor C 7, promotes the loudspeaker sounding, and R9 is that feedback resistance plays gain effect.
During off state, because of weak output signal needs circuit gain very high, thus design a circuit separately, and when going to survey short-circuit signal with the circuit that IC2, IC3 form, choking phenomenon then takes place, so overlap circuit with two.
The using method of this product:
Detect short circuit: transmitter is connected with two short-circuit conductors to be measured, the K switch of receiver is got to the K1 position, along lead top (receiver end), mobile receptacle.At this moment, before sentenced the arrival trouble spot, receiver can receive sound signal and sounding, arrived the trouble spot later on because of signal is returned transmitter by short-circuit flow, so receiver can not receive sound signal, loudspeaker is sounding not, therefore finds the trouble spot.
Detect bonding: the same, fish folder (a or b) is clipped on the bonding lead, another fish is clipped in automobile bonding point (vehicle body) mobile transmitter on the wire harness of lead place, moves to not sounding place, is exactly the trouble spot.
Detection is opened circuit: the output line of transmitter is connected on the circuit detected in the wire harness, the K switch of receiver is got to the K2 position, along lead top (receiver end), mobile receptacle.Sound signal just is coupled to receiver by the distributed capacitance between heart yearn and the probe, raises living device and can sound, and arrives the trouble spot later on because of signal can not be coupled to receiver again, and receiver can not receive sound signal, and loudspeaker is sounding not, and this point is exactly the trouble spot.
Claims (6)
1. car electrics line maintenance instrument, its composition comprises: launcher shell, receiver shell, it is characterized in that: the transmitter line plate with overhanging dop is housed, the power amplifier circuit and the loudspeaker that have detection probe and receiver wiring board on the described receiver shell and link to each other in the described launcher shell with described receiver circuit.
2. car electrics line maintenance instrument according to claim 1 is characterized in that: described transmitter circuit board is a KD-9561 music integrated circuit plate.
3. car electrics line maintenance instrument according to claim 1 and 2 is characterized in that: described receiver circuit comprises through the K1 switch selects the short-circuit detecting circuit (IC1) of conducting, broken circuit detection circuit (IC2) and (IC3) through K2 switch selection conducting, the direct supply that links to each other with switch.
4. car electrics line maintenance instrument according to claim 3, it is characterized in that: short-circuit detecting circuit (IC1) comprising: be installed in the receiving coil L in the described detection probe, capacitor C 1 of connecting with described receiving coil L and resistance R 1 are connected on the anode interface (2) of dual operational amplifier IC1 ', the other end of described receiving coil L links to each other with the negative level interface (3) of described dual operational amplifier IC1 ' after the capacitor C 2 of parallel connection and resistance R 2 ground connection, carrying out the last end of positive machine interface (2) that resistance R 3 one ends that one-level feedback and secondary amplifier gain are connected described dual operational amplifier IC1 ' is connected on the output interface (1) of described dual operational amplifier IC1 ', the output interface of described dual operational amplifier IC1 ' (1) links to each other with the negative level interface (6) of described dual operational amplifier IC1 ' through the series coupled circuit of resistance R 4 and capacitor C 3, the interface of described dual operational amplifier IC1 ' (3) links to each other with (5) after communicate with the K switch 1 that is connected described direct supply behind the biasing resistor R6 with after the 9V output interface (8) of described dual operational amplifier IC1 ' links to each other, the two ends of feedback resistance R5 link to each other with negative level interface (6) with the output interface (7) of described dual operational amplifier IC1 ' respectively, and the output terminal of described dual operational amplifier IC1 ' (7) connects the port (7) of described power amplifier after capacitor C 4 and resistance R 11.
5. car electrics line maintenance instrument according to claim 3 is characterized in that: broken circuit detection circuit (IC2) and (IC3) comprising: the described detection probe that links to each other with the interface (3) of dual operational amplifier IC2 ', the interface (6) of described dual operational amplifier IC2 ' and " " between be connected with by capacitor C 2 ', capacitor C 3 ', capacitor C 4 ', capacitor C 5 ' and resistance R 4 ', resistance R 5 ', resistance R 6 ', the level Four Hi-pass filter G1 of resistance R 8 ' form.Simultaneously, between the 9V interface (7) of the interface (3) of described dual operational amplifier IC2 ' and this dual operational amplifier IC2 ', be in series with resistance R 1 ' and resistance R 2 ', described resistance R 1 ' and described resistance R 2 ' between extension line by parallel resistor R3 ' capacitor C 1 ' connect " ", the output interface (6) of the interface of described dual operational amplifier IC2 ' (2) and this dual operational amplifier IC2 ' links to each other, described capacitor C 5 ' an end through resistance R 7 ' be connected to jointly on the K switch 2 that links to each other with described direct supply with the 9v interface (7) of described dual operational amplifier IC2 ' and the 9v interface (8) of dual operational amplifier IC3 ', the lead-in wire that is connected of described resistance R 4 and resistance R 6 links to each other with output interface (1) with interface (2) and the interface (5) of described dual operational amplifier IC3 ', the interface of described dual operational amplifier IC3 ' (7) is through the resistance R 9 of series connection, resistance R 10 and capacitor C 6 connect " " wherein, resistance R 9 resistance, tap between the R10 links to each other with the interface (6) of described dual operational amplifier IC3 ', the interface of described dual operational amplifier IC3 ' (7) through capacitor C 7 ' after connect the interface (7) of described power amplifier.
6. according to claim 4 or 5 described car electrics line maintenance instrument, it is characterized in that: described power amplifier electricity slightly comprises: power amplifier, its interface (7) links to each other with short-circuit detecting circuit with described broken circuit detection circuit, the interface of described power amplifier (7) links to each other with the interface (8) of this power amplifier through the series circuit of resistance (12 ') and electric capacity (12 '), the line of described resistance (12 ') and described electric capacity (12 ') connect " ", the interface of described power amplifier (4) connect " ", the interface of described power amplifier (2) connects direct supply, the interface of described power amplifier (3) through electric capacity (13) with connect after described loudspeaker links to each other " ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98244668 CN2337567Y (en) | 1998-10-02 | 1998-10-02 | Electric appliance line testing and repairing instrument for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98244668 CN2337567Y (en) | 1998-10-02 | 1998-10-02 | Electric appliance line testing and repairing instrument for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2337567Y true CN2337567Y (en) | 1999-09-08 |
Family
ID=33990714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98244668 Expired - Fee Related CN2337567Y (en) | 1998-10-02 | 1998-10-02 | Electric appliance line testing and repairing instrument for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2337567Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364675A (en) * | 2012-03-30 | 2013-10-23 | 海洋王（东莞）照明科技有限公司 | Wire disconnection detecting circuit and wire disconnection detecting device |
| CN113009302A (en) * | 2021-03-18 | 2021-06-22 | 奇瑞新能源汽车股份有限公司 | Method and device for positioning insulation fault of high-voltage system of electric automobile |
-
1998
- 1998-10-02 CN CN 98244668 patent/CN2337567Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364675A (en) * | 2012-03-30 | 2013-10-23 | 海洋王（东莞）照明科技有限公司 | Wire disconnection detecting circuit and wire disconnection detecting device |
| CN113009302A (en) * | 2021-03-18 | 2021-06-22 | 奇瑞新能源汽车股份有限公司 | Method and device for positioning insulation fault of high-voltage system of electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |