CN212275928U - Flat cable conduction testing device and testing circuit thereof - Google Patents
Flat cable conduction testing device and testing circuit thereof Download PDFInfo
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- CN212275928U CN212275928U CN202020503230.0U CN202020503230U CN212275928U CN 212275928 U CN212275928 U CN 212275928U CN 202020503230 U CN202020503230 U CN 202020503230U CN 212275928 U CN212275928 U CN 212275928U
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Abstract
The utility model provides a winding displacement conduction testing device and test circuit thereof, this test circuit includes first winding displacement terminal, first winding displacement terminal includes a plurality of first connecting terminal and a plurality of second connecting terminal, a plurality of first connecting terminal are connected to the power, a plurality of second connecting terminal pass through switch ground connection, and, this circuit still includes second binding post, second winding displacement terminal includes a plurality of third connecting terminal and a plurality of fourth connecting terminal, a third connecting terminal and a fourth connecting terminal are connected to the both ends of the emitting diode of photoelectric coupler, one end of photoelectric coupler's photoelectric triode is connected to the treater; a first output terminal of the processor is connected to the normal indication circuit, and a second output terminal of the processor is connected to the abnormal indication circuit. The testing device comprises a shell, wherein a circuit board is arranged in the shell, and the circuit board is provided with the circuit. The utility model discloses can improve winding displacement conduction test's accuracy.
Description
Technical Field
The utility model relates to a test equipment field, it is specific relates to a winding displacement conduction testing device and this kind of testing arrangement's test circuit.
Background
The existing electrical equipment uses a large amount of flat cables, the flat cables comprise a plurality of wires which are arranged side by side, and two ends of each wire are respectively connected to two terminals of the electrical equipment to realize the electrical connection between the two terminals. Generally, the two ends of the flat cable are the terminals of the plurality of wires, and the terminals of the two ends of the plurality of wires should be corresponding, that is, the sequence of the two terminals of each wire on the flat cable is the same. However, in the production process of the flat cable, quality problems such as short circuit, open circuit, terminal sequence error and the like may occur to the wires, and therefore, the flat cable needs to be tested before shipping. In addition, before the flat cable is connected to the electrical equipment, people can also test the flat cable to determine that the used flat cable has no short circuit, open circuit, wrong terminal sequence and the like.
People usually use a flat cable conduction test device to detect a flat cable, the existing flat cable conduction test device is usually provided with a shell, a circuit board is arranged in the shell, a flat cable conduction test circuit is arranged on the circuit board and comprises two flat cable terminals, and each flat cable terminal is connected with one end of the flat cable. Generally, the flat cable terminal includes a plurality of connection terminals, each of which is electrically connected to one end of one of the conductive wires. When the flat cable is detected, current needs to be loaded to the flat cable, whether short circuit and open circuit exist in each lead or not is judged by detecting the current condition flowing through each lead, or whether the sequence of terminals of a plurality of leads of the flat cable is wrong is detected.
The conventional flat cable conduction test circuit is provided with an abnormal indicating circuit, and when the flat cable is abnormal, the abnormal indicating circuit sends an indicating signal, for example, an indicating lamp or a buzzer. However, when the wires are detected, current needs to be loaded to the wires, the current loaded to the wires may interfere with the abnormality indication circuit, and the conventional flat cable conduction test circuit is not provided with an isolation device, so that the test result of flat cable conduction is often inaccurate.
Disclosure of Invention
The utility model aims at providing an effectively avoid the winding displacement conduction test circuit that the electric current that the wire recorded caused the influence to unusual indicating circuit.
A second object of the present invention is to provide a flat cable conduction testing device using the flat cable conduction testing circuit.
In order to achieve the first object of the present invention, the testing circuit of the flat cable conduction testing device provided by the present invention comprises a first flat cable terminal, the first flat cable terminal comprises a plurality of first connecting terminals and a plurality of second connecting terminals, the plurality of first connecting terminals are connected to a power supply, the plurality of second connecting terminals are grounded through a switch, and the circuit further comprises a second flat cable terminal, the second flat cable terminal comprises a plurality of third connecting terminals and a plurality of fourth connecting terminals, one third connecting terminal and one fourth connecting terminal are connected to both ends of a light emitting diode of a photoelectric coupler, one end of a photoelectric triode of the photoelectric coupler is connected to a processor; a first output terminal of the processor is connected to the normal indication circuit, and a second output terminal of the processor is connected to the abnormal indication circuit.
According to the scheme, the flat cable conduction testing device is provided with the photoelectric coupler, the lead of the flat cable is connected with the light emitting diode of the photoelectric coupler, and the photoelectric triode cannot receive the current of the lead, so that the processor, the normal indicating circuit and the abnormal indicating circuit cannot receive the current of the flat cable, the current recorded on the flat cable cannot interfere with the processor, the normal indicating circuit and the abnormal indicating circuit, and the detection of the flat cable conduction testing device is more accurate.
Preferably, the normal indication circuit includes a first switching device connected to a coil of the first relay, and the switch of the first relay is connected to the normal indicator lamp.
Therefore, the work of the normal indicator light is controlled through the action of the first relay, and the work stability of the normal indicator light can be ensured.
The further scheme is that a first indicator light is connected between the first relay coil and the power supply. Like this, can instruct through first pilot lamp whether being connected between first relay coil and the power reliable, avoid influencing the work of normal pilot lamp because of first relay coil outage.
In an alternative, the abnormality indication circuit includes a second switching device connected to a coil of a second relay, and a switch of the second relay is connected to the abnormality indication lamp.
Therefore, the operation of the abnormal indicating lamp is controlled through the action of the second relay, and the stability of the operation of the abnormal indicating lamp can be ensured.
Further, a second indicator light is connected between the second relay coil and the power supply.
Therefore, whether the connection between the second relay coil and the power supply is reliable or not can be indicated through the second indicator lamp, and the phenomenon that the work of the abnormal indicator lamp is influenced due to the fact that the second relay coil is powered off is avoided.
In a further aspect, the switch of the second relay coil is electrically connected to the buzzer. Therefore, once the flat cable is abnormal, the buzzer can send an abnormal indicating signal, so that a detector can know the abnormal flat cable in time.
In a further scheme, an on-off indicator lamp is connected between each third connecting terminal and the light emitting diode.
Therefore, each on-off indicating lamp can indicate the normal or abnormal conditions of the two adjacent wires, and therefore, a detector judges which two wires are abnormal through each on-off indicating lamp.
For realizing foretell second purpose, the utility model provides a winding displacement conduction testing device includes the casing, is provided with the circuit board in the casing to, be provided with foretell test circuit on the circuit board, first winding displacement terminal all sets up on the casing with second winding displacement terminal.
According to the scheme, the photoelectric coupler is arranged on the flat cable conduction testing circuit, the lead of the flat cable is connected with the light emitting diode of the photoelectric coupler, and the photoelectric triode cannot receive the current of the lead, so that the processor, the normal indicating circuit and the abnormal indicating circuit cannot receive the current of the flat cable, the current recorded on the flat cable cannot interfere with the processor, the normal indicating circuit and the abnormal indicating circuit, and the detection of the flat cable conduction testing device is more accurate.
Preferably, an on-off indicator light is connected between each third connecting terminal and the light emitting diode, and the plurality of on-off indicator lights are arranged on the shell.
Therefore, the shell is provided with the plurality of on-off indicating lamps, and a detector judges which two wires are abnormal through each on-off indicating lamp.
The further scheme is that the on-off indicator light is arranged near the first flat cable terminal or the second flat cable terminal.
Therefore, detection personnel can conveniently know the on-off condition of the lead near the flat cable terminal, and the flat cable is more convenient to detect.
Drawings
Fig. 1 is a structural diagram of an embodiment of the flat cable continuity testing device of the present invention.
Fig. 2 is an electrical schematic diagram of a first portion of a flat cable continuity test circuit according to an embodiment of the present invention.
Fig. 3 is an electrical schematic diagram of a second portion of the flat cable continuity test circuit according to an embodiment of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
The utility model discloses a winding displacement conduction testing device is used for detecting the winding displacement quality, for example detects whether short circuit, the condition of opening a circuit or winding displacement terminal sequence error appear in each wire in the winding displacement. The flat cable conduction testing device is internally provided with a circuit board which is provided with a flat cable conduction testing circuit.
The flat cable conduction testing device comprises:
referring to fig. 1, the present embodiment has a housing 10, the housing 10 is substantially in the shape of a rectangular parallelepiped, a circuit board is disposed in the housing 10, a flat cable conduction test circuit is disposed on the circuit board, and a circuit structure of the test circuit will be described in detail below.
A first flat cable socket 11 and a second flat cable socket 13 are disposed on the upper surface of the housing 10, a first flat cable terminal 12 is disposed on the first flat cable socket 11, a second flat cable terminal 14 is disposed on the second flat cable socket 13, the first flat cable terminal 12 includes a plurality of connection terminals, and the second flat cable terminal 14 also includes a plurality of connection terminals. Both ends of the flat cable may be inserted into the first and second flat cable terminals 12 and 14, respectively.
The upper surface of the housing 10 is further provided with a normal indicator light 15 and an abnormal indicator light 16, wherein the normal indicator light 15 emits light when the flat cable performance is normal, and the abnormal indicator light 16 emits light when the flat cable performance is abnormal, for example, when a short circuit or an open circuit occurs in a lead of the flat cable or a sequence of flat cable terminals is wrong. In addition, the casing 10 is provided with a buzzer 17, when the flat cable is abnormal, the buzzer 17 can send out alarm indication sound, so that the detection personnel can know the performance abnormality of the flat cable more quickly.
In addition, a plurality of on/off indicating lamps 19 are further provided on the upper surface of the housing 10, the plurality of on/off indicating lamps 19 are LED lamps and are arranged in a row, and the plurality of on/off indicating lamps 19 are located near the first bus bar terminal 12. In this embodiment, each on-off indicator lamp 19 is used to indicate the on-off condition of two adjacent wires, for example, when any one of the two adjacent wires is short-circuited or open-circuited or has a wrong terminal sequence, the corresponding on-off indicator lamp 19 will not emit light. Like this, the testing personnel can judge which wire abnormal conditions appear according to the luminous condition of break-make pilot lamp 19 to quick detect the wire, perhaps reject unusual wire, improve the efficiency of software testing of winding displacement.
The switch 20 is disposed on one side wall of the casing 10, the switch 20 is used as a main switch for testing the flat cable, when the switch 20 is in an off state, the flat cable conduction testing device is in an off state, and the flat cable cannot be tested, so that when the performance of the flat cable needs to be tested, the switch 20 only needs to be in an on state.
The flat cable conduction test circuit embodiment:
referring to fig. 2 and 3, the first flat cable terminal 12 is CN2 in fig. 2, the second flat cable terminal is CN1 in fig. 2, and the flat cable 21 to be tested has 10 wires, and the first end CNB of the flat cable 21 is inserted into the first flat cable socket 11, so as to electrically connect the first end CNB of the flat cable 21 with the first flat cable terminal CN 2. The first bus bar terminal CN2 is provided with 10 connection terminals, which are respectively indicated by reference numerals 1 to 10, and each of the connection terminals is connected to a first end of one of the wires of the bus bar 21. The 10 conductors of the flat cable 21 are also ordered according to the serial numbers 1 to 10, and preferably, each connection terminal of the first flat cable terminal CN2 is in one-to-one correspondence with each conductor.
Similarly, the second end CNA of the flat cable 21 is inserted into the second flat cable socket 13, so that the second end CNA of the flat cable 21 is electrically connected to the second flat cable terminal CN 1. The second flat cable terminal CN1 has 10 connection terminals, which are respectively indicated by numbers 1 to 10, and each of the connection terminals is connected to the second end of one of the wires of the flat cable 21. The 10 wires of the flat cable 21 are also ordered according to the serial numbers 1 to 10, and preferably, each connection terminal of the second flat cable terminal CN1 is in one-to-one correspondence with each wire.
The plurality of connection terminals of the first wire arranging terminal CN2 are divided into 5 first connection terminals and 5 second connection terminals, specifically, one of the two adjacent connection terminals is the first connection terminal, and the other one is the second connection terminal, for example, the connection terminals with numbers 1, 3, 5, 7, 9 are the first connection terminals, the connection terminals with numbers 2, 4, 6, 8, 10 are the second connection terminals, and each first connection terminal is in one-to-one correspondence with one second connection terminal.
Each first connection terminal is connected to a power source through a resistor, for example, the first connection terminal numbered 1 is connected to a power source through a resistor R1, the power source is a 5V dc power source, the first connection terminal numbered 3 is connected to a power source through a resistor R2, and so on. All the second connection terminals are connected to one end of the switch S1, and the other end of the switch S1 is grounded. Switch S1 of fig. 2 is switch 20 of fig. 1.
The plurality of connection terminals of the first bus bar terminal CN1 are divided into 5 third connection terminals and 5 fourth connection terminals, specifically, one of the two adjacent connection terminals is the third connection terminal, and the other one is the fourth connection terminal, for example, the connection terminals with serial numbers 1, 3, 5, 7, 9 are the third connection terminals, the connection terminals with serial numbers 2, 4, 6, 8, 10 are the fourth connection terminals, and each third connection terminal corresponds to one fourth connection terminal.
The flat cable conduction test circuit is provided with five photoelectric couplers, namely an IOS1, an IOS2, an IOS3, an IOS4 and an IOS5, wherein the corresponding third connecting terminal and the corresponding fourth connecting terminal of each group are respectively connected with two ends of a light emitting diode of one photoelectric coupler. In addition, an on-off indicator lamp is connected between each third connection terminal and the corresponding light emitting diode, for example, an on-off indicator lamp LED1 is connected between the third connection terminal 1 and the corresponding light emitting diode of the photocoupler IOS1, an on-off indicator lamp LED2 is connected between the third connection terminal 3 and the corresponding light emitting diode of the photocoupler IOS2, and so on.
One end of the phototriode of each photocoupler is connected to the processor U1, and the other end of the phototriode is grounded, for example, one end of the phototriode of the photocoupler IOS1 is a terminal STEP1_2, the terminal STEP1_2 is connected to two input terminals STEP1 and STEP2 of the processor U1, one end of the phototriode of the photocoupler IOS2 is a terminal STEP3_4, the terminal STEP3_4 is connected to two input terminals STEP3 and STEP4 of the processor U1, and so on.
An output terminal P2.4 of the processor U1 is connected to a normal indication circuit, which includes a first switching device Q1, the first switching device Q1 is a low-level conducting transistor, and its base is connected to the output terminal P2.4 through a resistor R23. The collector of the first switching device Q1 is grounded, the emitter is connected with the coil K1A of the first relay, the coil K1A of the first relay is connected to the power VCC through the resistor R21 and the first indicator light LED12, the anode end of the first indicator light LED12 is connected to the power VCC, and the cathode end is connected to the resistor R21. One end of the switch K1B of the first relay is connected with a normal indicator lamp H1, the other end of the switch K1B of the first relay is grounded, and the normal indicator lamp H1 is also connected to a 12V direct-current power supply.
In addition, the first relay coil K1A is also connected in parallel with a diode D1, an anode terminal of the diode D1 is connected to an emitter of the first switching device Q1, and a cathode terminal of the diode D1 is connected to the resistor R21.
Similarly, the other output terminal P2.5 of the processor U1 is connected to an abnormality indication circuit, which includes a second switching device Q2, the second switching device Q2 is a low-level conducting triode, and its base is connected to the output terminal P2.5 through a resistor R24. The collector of the second switching device Q2 is grounded, the emitter is connected with the coil K2A of the second relay, the second relay coil K2A is connected to the power VCC through the resistor R22 and the first indicator light LED11, the anode terminal of the second indicator light LED11 is connected to the power VCC, and the cathode terminal is connected to the resistor R22. One end of the switch K2B of the second relay is connected with an abnormal indicator lamp H2, the other end of the switch K2B of the second relay is grounded, and the abnormal indicator lamp H2 is also connected to a 12V direct-current power supply. Preferably, the color of the abnormal indicator light H2 is different from the color of the normal indicator light H1, for example, the color of the normal indicator light H1 is green, and the color of the abnormal indicator light H2 is red.
In addition, the second relay coil K2A is also connected in parallel with a diode D2, an anode terminal of the diode D2 is connected to an emitter of the second switching device Q2, and a cathode terminal of the diode D2 is connected to the resistor R22.
When the flat cable 21 has no abnormal condition, that is, each wire has no short circuit or open circuit, and no condition that the sequence of the plurality of wire terminals is wrong, both ends of the flat cable 21 are respectively inserted into the first flat cable terminal CN2 and the second flat cable terminal CN1, and the switch S1 is set to be in a closed state, the 5V dc power supply flows through the first connection terminal of the first flat cable terminal CN2, flows through one wire, flows through the third connection terminal of the second flat cable terminal CN1, then flows through the on-off indicator lamp and the light emitting diode of the photocoupler, then sequentially flows through the fourth connection terminal, the other wire and the second connection terminal, and reaches the switch S1, thereby forming a loop, at this time, the indicator lamp emits light, the light emitting diode also emits light, and one end of the phototriode outputs a low level signal.
The processor U1 receives the signal of the phototriode, if the signal output by all the phototriodes is a low level signal, it indicates that the flat cable performance is normal, at this time, the processor U1 determines that the received output signals of all the phototriodes are low level signals, its output terminal P2.4 outputs a low level signal, and the output terminal P2.5 outputs a high level signal, at this time, the first switching device Q1 is turned on, and the second switching device Q2 is turned off, so that the first relay coil K1A is powered on, the switch K1B of the first relay is turned on, and the normal indicator light H1 emits light. Since the second relay coil K2A is not energized, the switch K2B of the second relay is turned off, and the abnormality indicator lamp H2 does not emit light.
When the flat cable 21 is abnormal, for example, a certain conductor does not have a short circuit or an open circuit, or two terminals of the cable are in wrong sequence, no current flows through the conductor in the abnormal condition, the corresponding on-off indicator light does not emit light because no current flows through, and correspondingly, one end of the corresponding phototriode outputs a high level signal. When the processor U1 receives that the signal output by any one of the phototransistors is a high level signal, which indicates that the flat cable performance is abnormal, at this time, the output terminal P2.4 of the processor U1 outputs a high level signal, and the output terminal P2.5 outputs a low level signal, that is, the first switching device Q1 is turned off, the second switching device Q2 is turned on, at this time, the second relay coil K2A is energized, the switch K2B of the second relay is closed, the abnormal indicator light H2 emits light, but the normal indicator light H1 does not emit light.
Preferably, the second relay coil K2A is also connected to a buzzer, which also sounds an alarm when the second relay coil K2A is closed.
When the flat cable 21 is abnormal, a detector can judge which wires are abnormal according to the light emitting condition of the on-off indicating lamp, so that the detection efficiency of the flat cable is improved.
Due to the arrangement of the photoelectric coupler, the current flowing through the flat cable cannot influence the processor U1, the normal indicating circuit and the abnormal indicating circuit, and the detection accuracy is improved.
Finally, it should be emphasized that the present invention is not limited to the above-mentioned embodiments, such as the changes of the specific circuit structures of the normal indication circuit and the abnormal indication circuit, or the changes of the types of the first switching device and the second switching device, which should be included in the protection scope of the present invention.
Claims (10)
1. Test circuit of winding displacement conduction testing arrangement includes:
a first line terminal including a plurality of first connection terminals connected to a power source and a plurality of second connection terminals grounded through a switch;
characterized in that the circuit further comprises:
the second flat cable terminal comprises a plurality of third connecting terminals and a plurality of fourth connecting terminals, one third connecting terminal and one fourth connecting terminal are connected to two ends of a light emitting diode of a photoelectric coupler, and one end of a photoelectric triode of the photoelectric coupler is connected to the processor;
a first output terminal of the processor is connected to the normal indication circuit, and a second output terminal of the processor is connected to the abnormal indication circuit.
2. The testing circuit of the flat cable conduction testing device as claimed in claim 1, wherein:
the normal indication circuit comprises a first switching device, the first switching device is connected to a coil of a first relay, and a switch of the first relay is connected with a normal indicator lamp.
3. The testing circuit of the flat cable conduction testing device as claimed in claim 2, wherein:
and a first indicator lamp is connected between the first relay coil and the power supply.
4. The testing circuit of the flat cable conduction testing device as claimed in claim 1, wherein:
the abnormality indication circuit includes a second switching device connected to a coil of a second relay, a switch of the second relay being connected to an abnormality indication lamp.
5. The testing circuit of the flat cable conduction testing device as claimed in claim 4, wherein:
and a second indicator light is connected between the second relay coil and the power supply.
6. The testing circuit of the flat cable conduction testing device as claimed in claim 4, wherein:
and the switch of the second relay coil is electrically connected with the buzzer.
7. The testing circuit of the flat cable conduction testing device according to any one of claims 1 to 5, wherein:
and an on-off indicator lamp is connected between each third connecting terminal and the light-emitting diode.
8. Winding displacement conduction testing arrangement includes:
the casing, be provided with circuit board, its characterized in that in the casing:
the circuit board is provided with a test circuit according to any one of claims 1 to 6, and the first flat cable terminal and the second flat cable terminal are both arranged on the housing.
9. The flat cable conduction testing device of claim 8, wherein:
and an on-off indicator light is connected between each third connecting terminal and the light-emitting diode, and the on-off indicator lights are arranged on the shell.
10. The flat cable conduction testing device of claim 9, wherein:
the on-off indicator light is arranged near the first flat cable terminal or the second flat cable terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503230.0U CN212275928U (en) | 2020-04-07 | 2020-04-07 | Flat cable conduction testing device and testing circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503230.0U CN212275928U (en) | 2020-04-07 | 2020-04-07 | Flat cable conduction testing device and testing circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212275928U true CN212275928U (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020503230.0U Active CN212275928U (en) | 2020-04-07 | 2020-04-07 | Flat cable conduction testing device and testing circuit thereof |
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| Country | Link |
|---|---|
| CN (1) | CN212275928U (en) |
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2020
- 2020-04-07 CN CN202020503230.0U patent/CN212275928U/en active Active
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