CN216248275U - Multi-core wire open circuit short circuit detection device - Google Patents
Multi-core wire open circuit short circuit detection device Download PDFInfo
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- CN216248275U CN216248275U CN202122581734.1U CN202122581734U CN216248275U CN 216248275 U CN216248275 U CN 216248275U CN 202122581734 U CN202122581734 U CN 202122581734U CN 216248275 U CN216248275 U CN 216248275U
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Abstract
The utility model discloses a multi-core wire open circuit short circuit detection device, which comprises a power supply access plate and a voltage detection plate; the power supply access board is provided with a power supply access circuit and a first cable socket, and the power supply access circuit is connected with the first cable socket; the voltage detection board is provided with a second cable socket and a plurality of test points; the first cable socket is used for connecting one end of the multi-core wire to be tested, and the second cable socket is used for connecting the other end of the multi-core wire to be tested. The utility model has simple structure, can detect the quality of a plurality of wires at one time and greatly improves the detection efficiency.
Description
Technical Field
The utility model relates to the field of cable detection, in particular to a multi-core wire open-circuit short-circuit detection device.
Background
With the rapid development of electronic technology, the use of multi-core wires is becoming more and more common. At present, the quality of multi-core wires (such as connecting wires, microphone wires, video signal wires and other signal cables) is detected by a universal meter in production, the detection method is adopted to detect the open circuit of each core wire of two or more signal wires or the short circuit condition between adjacent core wires, the detection can be finished by more than twice the detection times of the core wires, the time and labor are wasted, the accuracy is not necessarily high, the product is directly tried on the product, the product can be damaged by the detection mode of trying on the product, and the fault range can not be effectively determined.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the quality of multi-core wires is detected by using a universal meter basically in the current production, the detection method is adopted to detect the open circuit of each core wire of two or more signal wires or the short circuit condition between adjacent core wires, the detection can be finished only by more than twice the detection times of the core wires, the detection is time-consuming and labor-consuming and is not necessarily accurate, and the multi-core wire open circuit short circuit detection device is provided to solve the problems.
The utility model is realized by the following technical scheme:
a multi-core wire open circuit short circuit detection device comprises a power supply access plate and a voltage detection plate; the power supply access board is provided with a power supply access circuit and a first cable socket, and the power supply access circuit is connected with the first cable socket; the voltage detection board is provided with a second cable socket and a plurality of test points; the first cable socket is used for connecting one end of the multi-core wire to be tested, and the second cable socket is used for connecting the other end of the multi-core wire to be tested.
Furthermore, the power supply access circuit comprises a power supply module, a switch K, a power supply state indicating module and a voltage dividing resistor group; one end of the power supply module is connected with the first end of the switch K, the second end of the switch K is connected with the power state indicating module and one end of the divider resistor group, and the divider resistor group is connected with the first cable socket.
Furthermore, the second cable socket is provided with pins with the same number as the test points, and each pin corresponds to one test point.
Further, the power status indication module comprises a resistor R0 and a light emitting diode D1; one end of the resistor R0 is connected with the second end of the switch K, the other end of the resistor R0 is connected with the anode of the light-emitting diode D1, and the cathode of the light-emitting diode D1 is grounded.
Further, the voltage dividing resistor group comprises n resistors connected in series, namely a resistor R1, a resistor R2 and a resistor R3 …, and the n is greater than or equal to 1.
Furthermore, the first cable socket is provided with n +1 pins.
The condition of the multi-core wire depends on the specific tested data, and the n-core wire only needs to measure the data of n voltages to know whether the multi-core wire is good or not and the specific open circuit and short circuit conditions at the same time.
Further, the voltage dividing resistor group comprises three resistors connected in series, namely a resistor R1, a resistor R2 and a resistor R3. The voltage dividing resistor group comprises n resistors connected in series, wherein for convenience of illustration, n is 3; the value of n may be 3 or other integers.
Furthermore, four pins, namely a first pin, a second pin, a third pin and a fourth pin, are arranged on the first cable socket.
Furthermore, one end of the resistor R1 is connected with one end of the resistor R2 and the second pin, and the other end of the resistor R1 is connected with the first pin and grounded; the other end of the resistor R2 is connected to one end of the resistor R3 and the third pin, and the other end of the resistor R3 is connected to the second end of the switch K and the fourth pin.
Further, the power supply module is a direct current power supply.
The utility model comprises a power input board and a voltage detection board. A plurality of multi-core wires to be detected are connected in series between the power input board and the voltage detection board, the power input board supplies power to the voltage detection board through the multi-core wires, and the condition of open circuit and short circuit of the multi-core cables connected in series is judged by detecting the condition of voltage on the corresponding core wires on the voltage detection board, so that the quality of the multi-core wires connected in series is judged.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the multi-core wire open-circuit short-circuit detection device provided by the utility model can be used for connecting a plurality of multi-core wires to be detected in series and detecting the quality of the plurality of multi-core wires at one time.
The multi-core wire open-circuit short-circuit detection device provided by the utility model is simple in structure, can detect the quality of a plurality of wires at one time, and greatly improves the detection efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is a schematic view of the overall structure of the detection device of the present invention connected to a cable to be detected;
FIG. 2 is a schematic connection diagram of the detection device of the present invention accessing a plurality of cables to be tested;
FIG. 3 is a block diagram of an embodiment of a circuit schematic of a power access module of the detection apparatus of the present invention;
FIG. 4 is a block diagram of an embodiment of a circuit schematic of a voltage detection module of the detection device of the present invention;
FIG. 5 is a schematic diagram of the detection of the present invention.
Reference numbers and corresponding part names in the drawings:
the test method comprises the following steps of 1-power supply access board, 2-voltage detection board, 3-multi-core wire to be tested, 11-power supply access circuit, 13-first cable socket, 20-second cable socket, 21-first test point, 22-second test point, 23-third test point, 24-fourth test point, 131-first pin, 132-second pin, 133-third pin and 134-fourth pin.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The present embodiment 1 provides a multi-core open-circuit short-circuit detection device, as shown in fig. 1, including a power supply access board 1 and a voltage detection board 2; the power access board 1 is provided with a power access circuit 11 and a first cable socket 13, and the power access circuit 11 is connected with the first cable socket 13; the voltage detection plate 2 is provided with a second cable socket 20 and a plurality of test points; the first cable socket 13 is used for connecting one end of the multi-core wire 3 to be tested, and the second cable socket 20 is used for connecting the other end of the multi-core wire 3 to be tested. The power access circuit 11 includes a power supply, a switch K, a resistor R0, a light emitting diode D1, and a voltage dividing resistor group.
When the multi-core wire testing device is used, two plugs at two ends of the multi-core wire 3 to be tested are respectively inserted into the first cable socket 13 and the second cable socket 20, and the voltage of the upper port of the second cable socket 20 is tested to judge the quality of the multi-core wire and the specific open-circuit short-circuit condition. The testing of specific voltages may be done manually or by other mechanical means.
As shown in fig. 3, in the present embodiment, the voltage dividing resistor group includes three resistors, namely a resistor R1, a resistor R2, and a resistor R3, and the resistor R1, the resistor R2, and the resistor R3 are connected in series; one end of the power supply is connected with the first end of the switch K, the second end of the switch K is connected with one ends of the resistor R0 and the resistor R3, the other end of the resistor R0 is connected with the anode of the light-emitting diode D1, and the cathode of the light-emitting diode D1 is grounded. The first cable socket 13 is provided with four pins, which are a first pin 131, a second pin 132, a third pin 133 and a fourth pin 134. One end of the resistor R1 is connected to one end of the resistor R2 and the second pin 132, and the other end of the resistor R1 is connected to the first pin 131 and grounded; the other end of the resistor R2 is connected to one end of the resistor R3 and the third pin 133, and the other end of the resistor R3 is connected to the second end of the switch K and the fourth pin 134.
As shown in fig. 4, the second cable socket 20 is provided with four pins, which are a pin 201, a pin 202, a pin 203, and a pin 204, wherein the pin 201 is connected to the test point 21, the pin 202 is connected to the test point 22, the pin 203 is connected to the test point 23, and the pin 204 is connected to the test point 24.
According to the multi-core wire open-circuit short-circuit detection device provided by the utility model, a plurality of multi-core wires 3 to be detected are connected in series between a power input board 1 and a voltage detection board 2, the power input board 1 supplies power to the plurality of multi-core wires 3 to be detected, whether the voltage of the corresponding core wire is within a specified voltage range is detected on the voltage detection board 2, whether the open-circuit short-circuit condition exists in the plurality of multi-core wires 3 to be detected which are connected in series is judged, and therefore whether the plurality of multi-core wires 3 to be detected which are connected in series are good or bad is judged.
Example 2
FIG. 2 is a schematic diagram of the connection of the detecting device of the present invention to a plurality of cables to be tested.
The utility model comprises a power supply access plate 1 and a voltage detection plate 2, wherein a multi-core wire 3 to be detected is connected between the power supply access plate and the voltage detection plate.
The power supply access plate 1 provides voltage for the multi-core wires 31, the multi-core wires are sequentially connected in series until the multi-core wires 3n, the voltage is also sequentially provided for the multi-core wires 3n, and finally the voltage is accessed to the voltage detection plate 2.
Fig. 3 is a block diagram of an embodiment of a schematic circuit diagram of the power access panel 1 of the detection device of the present invention.
The power supply access board 1 is provided with a power supply, a switch K, a resistor R0, a light emitting diode D1, a first cable socket 13, a voltage dividing resistor R1, a voltage dividing resistor R2 and a voltage dividing resistor R3, wherein the resistance values of the voltage dividing resistor R1, the voltage dividing resistor R2 and the voltage dividing resistor R3 are the same, 4 core wires are used for example in the embodiment, and the number of the cores guaranteed by the number of other cores is reduced by 1 voltage dividing resistor. The power supply provides a main power supply; the switch K is convenient to operate during testing; the resistor R0 and the light-emitting diode D1 indicate the normal on state of the power supply; the first cable socket 13 is for facilitating the access of multi-core wires. According to ohm's law, the voltages between the two ends of the voltage-dividing resistor R1, the voltage-dividing resistor R2 and the voltage-dividing resistor R3 are the same and are 1/3 of the power supply.
Fig. 4 is a block diagram of an embodiment of a circuit schematic of a voltage sensing board of the sensing device of the present invention.
The voltage detection board 2 comprises a second cable socket 20, a test point 21, a test point 22, a test point 23 and a test point 24. The pins 201, 202, 203 and 204 of the cable socket 20 correspond to the connection test points 21, 22, 23 and 24, respectively. The voltage on the test point is the voltage corresponding to each core wire. In this embodiment, 4 core wires are taken as an example, and test points with different core numbers are guaranteed to be the same as the core numbers.
FIG. 5 is a schematic diagram of the detection of the present invention.
In this embodiment, a 4-core wire is taken as an example, the power supply is connected to the power supply on the board 1, and for convenience of data calculation and measurement, the voltage is 3V, and through the equivalent voltage dividing resistor, the voltages on the pin 131, the pin 132, the pin 133, and the pin 134 on the first cable socket 13 are 0V, 1V, 2V, and 3V, respectively; the 4 groups of voltages are transmitted to the second cable socket 20 on the voltage detection board 2 through the multi-core wires 31, 32, 1, 3n, and the voltage theories on the test points 21, 22, 23, 24 are 0V, 1V, 2V, and 3V.
In actual test, if the voltages of the obtained test points are 0V, 1V, 2V and 3V, the multi-core wires with the test can be judged to be normal without open circuit or short circuit.
If not, the conditions are many and different test results indicate different conditions. For the sake of convenience of the following description, the multifiber wires 31, 32.., 3n are regarded as one multifiber wire 3, and each of the core wires inside the multifiber wire 3 is described as a wire core 31, 32, 33, 34.
Open circuit condition analysis:
if the wire core 31 is open-circuited, the voltages on the test points 21, 22, 23 and 24 should be 0V, 0V, 0V and 0V;
if the wire core 32 is open-circuited, the voltages on the test points 21, 22, 23 and 24 are 0V, 0V, 2V and 3V;
if the wire core 33 is open-circuited, the voltages on the test points 21, 22, 23 and 24 are 0V, 1V, 0V and 3V;
if the wire core 34 is open-circuited, the voltages on the test points 21, 22, 23 and 24 are 0V, 1V, 2V and 0V;
namely which path of the wire cores 32, 33 and 34 is opened, and the voltage of the test point corresponding to which path is 0V; the core 31 is open-circuited, and the voltage at all test points is 0V.
Short circuit condition analysis, only consider the condition of short circuit of adjacent core:
if the wire cores 34 and 33 are short-circuited, only 1R1 and 1R2 function as the voltage dividing resistors, and the voltages on the test points 21, 22, 23 and 24 are 0V, 1.5V, 3V and 3V;
if the wire cores 33 and 32 are short-circuited, only 1R3 and 1R1 of the divider resistor play a role, and the voltages on the test points 21, 22, 23 and 24 are 0V, 1.5V, 1.5V and 3V;
if the wire cores 32 and 31 are short-circuited, only 1R3 and 1R2 of the divider resistor play a role, and the voltages on the test points 21, 22, 23 and 24 are 0V, 0V, 1.5V and 3V;
if the wire cores 34 and 33 and the wire cores 33 and 32 are short-circuited respectively, the voltage dividing resistor only has the function of 1R2, and the voltages on the test points 21, 22, 23 and 24 are 0V, 0V, 3V and 3V;
if the wire cores 34, 33 and 32 are short-circuited, only 1R1 acts on the divider resistor, and the voltages on the test points 21, 22, 23 and 24 are 0V, 3V, 3V and 3V;
if the wire cores 33, 32 and 31 are short-circuited, only the 1R3 of the divider resistor plays a role, and the voltages on the test points 21, 22, 23 and 24 are 0V, 0V, 0V and 3V;
if the wire cores 34, 33, 32 and 31 are all short-circuited, the voltage dividing resistors are all ineffective, the light emitting diodes cannot be lighted, and therefore, the whole wire is known to be problematic. The case of all open circuits and all short circuits does not substantially occur in practice.
Therefore, whether the multi-core wire to be tested is normal or not and which wires are abnormal can be known by testing 4 groups of voltages. The same applies to the core wires with other core numbers, and by the method, the n core wires can simultaneously know whether the multi-core wires are good or not and the specific open circuit and short circuit conditions only by measuring the data of n voltages, so that the efficiency is greatly improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The multi-core wire open-circuit short-circuit detection device is characterized by comprising a power supply access plate (1) and a voltage detection plate (2); the power supply access board (1) is provided with a power supply access circuit (11) and a first cable socket (13), and the power supply access circuit (11) is connected with the first cable socket (13); the voltage detection plate (2) is provided with a second cable socket (20) and a plurality of test points; the first cable socket (13) is used for connecting one end of the multi-core wire (3) to be tested, and the second cable socket (20) is used for connecting the other end of the multi-core wire (3) to be tested.
2. The multi-core open circuit and short circuit detection device according to claim 1, wherein the power access circuit (11) comprises a power supply module, a switch K, a power status indication module, and a voltage dividing resistor group; one end of the power supply module is connected with the first end of the switch K, the second end of the switch K is connected with the power state indicating module and one end of the voltage dividing resistor group, and the voltage dividing resistor group is connected with the first cable socket (13).
3. The open-circuit and short-circuit detection device for multi-core wires according to claim 1, wherein the second cable socket (20) is provided with a number of pins equal to a number of test points, and each pin corresponds to one test point.
4. The apparatus according to claim 2, wherein the power status indication module comprises a resistor R0 and a light emitting diode D1; one end of the resistor R0 is connected with the second end of the switch K, the other end of the resistor R0 is connected with the anode of the light-emitting diode D1, and the cathode of the light-emitting diode D1 is grounded.
5. The apparatus according to claim 4, wherein the voltage dividing resistor group comprises n resistors connected in series, namely a resistor R1, a resistor R2, and a resistor R3 …, and the n is greater than or equal to 1.
6. The open short detection device of claim 5, wherein n +1 pins are provided on the first cable socket (13).
7. The apparatus according to claim 6, wherein the voltage dividing resistor set comprises three resistors connected in series, namely a resistor R1, a resistor R2 and a resistor R3.
8. The open-circuit and short-circuit detection device for multi-core wires according to claim 7, wherein the first cable socket (13) is provided with four pins, namely a first pin (131), a second pin (132), a third pin (133) and a fourth pin (134).
9. The open-circuit and short-circuit detection device for multi-core wires according to claim 8, wherein one end of the resistor R1 is connected to one end of the resistor R2 and the second pin (132), and the other end of the resistor R1 is connected to the first pin (131) and grounded; the other end of the resistor R2 is connected to one end of the resistor R3 and the third pin (133), and the other end of the resistor R3 is connected to the second end of the switch K and the fourth pin (134).
10. The open-short detection device of claim 2, wherein the power supply module is a dc power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122581734.1U CN216248275U (en) | 2021-10-26 | 2021-10-26 | Multi-core wire open circuit short circuit detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122581734.1U CN216248275U (en) | 2021-10-26 | 2021-10-26 | Multi-core wire open circuit short circuit detection device |
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| CN216248275U true CN216248275U (en) | 2022-04-08 |
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| CN202122581734.1U Active CN216248275U (en) | 2021-10-26 | 2021-10-26 | Multi-core wire open circuit short circuit detection device |
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- 2021-10-26 CN CN202122581734.1U patent/CN216248275U/en active Active
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