CN211603506U

CN211603506U - Flat cable test circuit

Info

Publication number: CN211603506U
Application number: CN201922418368.0U
Authority: CN
Inventors: 刘晓东; 韩玉争; 杨永栋
Original assignee: Optofidelity High Tech Zhuhai Ltd
Current assignee: Optofidelity High Tech Zhuhai Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-29
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a simple structure, with low costs, portable, the high just strong adaptability's of efficiency of software testing winding displacement test circuit. The circuit comprises a power supply (B1), a single-pole double-throw switch (S1), a first current-limiting resistor (R1), a second current-limiting resistor (R2), a first indicator light (LED 1) and a second indicator light (LED 2), wherein the first current-limiting resistor, the first indicator light, the second current-limiting resistor and the second indicator light are connected in series respectively and then connected to one end of the power supply in parallel, the double-throw end of the single-pole double-throw switch is connected with pins of the first two single wires at one end of a to-be-detected flat cable respectively, among the plurality of single wires arranged in the to-be-detected flat cable, the single wires belonging to an odd number sequence are connected in series in sequence and then connected with one of the first current-limiting resistor and the second current-limiting resistor, and the single wires belonging to an even number sequence are connected in series in sequence and then connected with the other of. The utility model is used for the circuit field.

Description

Flat cable test circuit

Technical Field

The utility model relates to a circuit field especially relates to a winding displacement test circuit.

Background

At present, a universal meter is generally used for point-by-point inspection of the flat cable during equipment maintenance, but pin pins of one flat cable are numerous, points to be tested are more, a large amount of testing time is consumed to finish the test of one flat cable, and the efficiency is extremely low. At present, the flat cable is detected by adopting a standard cable measuring instrument, but the flat cable detecting instrument is high in cost, large in equipment volume and inconvenient to carry, and when a detector goes to repair the equipment all over the country, a large-size professional flat cable detecting device needs to be carried, so that the carrying difficulty is greatly increased, the cost is increased, and the professional flat cable detecting device is easy to damage in the carrying process, so that the detecting quality is influenced. In addition, the line testing equipment can be detected only by being connected to a power supply, and the situation that the detection cannot be performed without an external power supply exists, and the purchase cost is high, so that the popularization is difficult. The standard interface is provided to present test line equipment, and different adapter plates need to be changed according to actual needs to adapt to test requirements, so that the cost expenditure of the adapter plates is increased. The testing speed of the conventional multimeter is slow, which greatly reduces the testing efficiency and further increases the cost investment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide a simple structure, with low costs, portable, high and strong adaptability's winding displacement test circuit of efficiency of software testing.

The technical scheme that winding displacement test circuit adopted is: the utility model comprises a power supply, a single-pole double-throw switch, a first current-limiting resistor, a second current-limiting resistor, a first indicator light and a second indicator light, the first current limiting resistor and the first indicator light as well as the second current limiting resistor and the second indicator light are respectively connected in series and then connected to one end of the power supply in parallel, the single-pole end of the single-pole double-throw switch is connected with the other end of the power supply, the double-throw end of the single-pole double-throw switch is respectively connected with the pins of the first two single wires at one end of the flat cable to be tested, and among the plurality of single wires arranged in the flat cable to be tested, the single wires belonging to the odd-numbered sequences are sequentially connected in series and then connected with one of the first current-limiting resistor and the second current-limiting resistor, and the single wires belonging to the even-numbered sequences are sequentially connected in series and then connected with the other one of the first current-limiting resistor and the second current-limiting resistor which is not connected with the single wires belonging to the odd-numbered sequences.

Above-mentioned scheme is seen, the power passes through the single-pole double-throw switch or connects the sequence of the winding displacement that awaits measuring and be the odd single line, or connects the sequence of the winding displacement that awaits measuring and be the even single line, can judge the open circuit or short circuit or normal of the winding displacement that awaits measuring through first pilot lamp or second pilot lamp: when the single-pole double-throw switch conducts the single wire with the odd-numbered sequence of the to-be-tested flat cable, when the indicator lamp connected with the single wire with the odd-numbered sequence is on and the other indicator lamp is not on, the single wire belonging to the odd-numbered sequence of the to-be-tested flat cable is judged to be normal; when the two indicator lights are simultaneously lighted, the short circuit of the flat cable to be tested is indicated; when the two indicating lamps are not on, the flat cable to be tested is open. When the single-pole double-throw switch conducts the single wire with the even number sequence of the to-be-tested flat cable, when the indicator lamp connected with the single wire with the even number sequence is on, and the other indicator lamp is not on, the single wire belonging to the even number sequence of the to-be-tested flat cable is judged to be normal; when the two indicator lights are simultaneously lighted, the short circuit of the flat cable to be tested is indicated; when the two indicating lamps are not on, the flat cable to be tested is open. When the single lines with the odd-numbered sequence and the even-numbered sequence of the flat cable to be tested are electrified normally, the whole flat cable to be tested is qualified. The event the utility model discloses simple structure, it is with low costs, and only need operate single-pole double-throw switch, can judge out the open short circuit condition of whole winding displacement fast through the pilot lamp, its efficiency of software testing is high, compares with standard test equipment among the prior art or equipment such as universal meter, and its volume has reduced widely, has greatly improved the convenience.

Furthermore, among the plurality of single wires arranged in the flat cable to be tested, the single wires belonging to the odd number sequence are sequentially connected in series and then connected with the first current limiting resistor, and the single wires belonging to the even number sequence are sequentially connected in series and then connected with the second current limiting resistor. Therefore, the first current-limiting resistor, the first indicator lamp and the to-be-tested flat cable are arranged in odd single-line connection, and the second current-limiting resistor, the second indicator lamp and the to-be-tested flat cable are arranged in even single-line connection, so that the structure judgment is more visual and accurate, the disordered condition is avoided, and the accuracy of the test result is ensured.

Still further, the power supply is a 3V button cell. Therefore, by adopting the button cell, the whole circuit can provide continuous and long-term power supply, the continuous use capability of the circuit is ensured, the low power consumption of the whole circuit is also ensured, and the button cell has a better energy-saving effect.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention;

fig. 2 is a wiring diagram of the flat cable in practical application of the present invention.

Detailed Description

As shown in fig. 1 and fig. 2, the present invention includes a power source B1, a single-pole double-throw switch S1, a first current-limiting resistor R1, a second current-limiting resistor R2, a first indicator light LED1 and a second indicator light LED2, in this embodiment, the power source B1 is a 3V button cell. The first current-limiting resistor R1, the first indicator light LED1, the second current-limiting resistor R2 and the second indicator light LED2 are connected in series respectively and then connected to one end of the power supply B1 in parallel, the single-pole end of the single-pole double-throw switch S1 is connected to the other end of the power supply B1, the double-throw end of the single-pole double-throw switch S1 is connected to the stitches of the first two single wires at one end of the to-be-tested flat cable P respectively, among the plurality of single wires arranged in the to-be-tested flat cable P, the single wires belonging to odd-numbered sequences are connected in series in sequence and then connected to one of the first current-limiting resistor R1 and the second current-limiting resistor R2, and the single wires belonging to even-numbered sequences are connected in series in sequence and then connected to the other of the first current-limiting resistor R1 and the second current-limiting resistor R2 which is not. Specifically, among a plurality of single wires arranged in the flat cable P to be tested, the single wires belonging to the odd-numbered sequence are sequentially connected in series and then connected to the first current-limiting resistor R1, and the single wires belonging to the even-numbered sequence are sequentially connected in series and then connected to the second current-limiting resistor R2.

The utility model discloses a use as follows:

(1) the single-pole end of the single-pole double-throw switch S1 is set to be an A end, the double-throw ends of the single-pole double-throw switch S1 are respectively a B end and a C end, wherein the B end is connected to a single line of which the sequence of the to-be-tested flat cable P is first, and the C end is connected to a single line of which the sequence of the to-be-tested flat cable P is second.

(2) Connecting the end A and the end B of the single-pole double-throw switch S1, disconnecting the end A and the end C, and judging that the single wire belonging to the odd-numbered sequence of the flat cable (P) to be tested is normal when the first indicator light LED1 is bright and the second indicator light LED2 is not bright; when the first indicator light LED1 and the second indicator light LED2 are simultaneously turned on, it indicates that the flat cable P to be tested is short-circuited; when the first indicator light LED1 and the second indicator light LED2 are not lit, it indicates that the flat cable P to be tested is open.

(3) Connecting the end A and the end C of the single-pole double-throw switch S1, disconnecting the end A and the end B, and judging that the single wire belonging to the even-numbered sequence of the flat cable P to be tested is normal when the first indicator light LED1 is not turned on and the second indicator light LED2 is turned on; when the first indicator light LED1 and the second indicator light LED2 are simultaneously turned on, it indicates that the flat cable P to be tested is short-circuited; when the first indicator light LED1 and the second indicator light LED2 are not lit, it indicates that the flat cable P to be tested is open.

In this embodiment, when the odd-numbered single wires or the even-numbered single wires in the sequential arrangement of the flat cable to be tested are connected in series, only the two ends of the flat cable to be tested are respectively provided with the corresponding connectors, as shown in fig. 2. In fig. 2, the M part and the N part are newly added connectors, where a contact D and a contact E on the M connector are connected to a double-throw terminal B and a terminal C of the single-pole double-throw switch, and a contact F and a contact G on the N connector are connected to a first current-limiting resistor and a second current-limiting resistor, respectively. The N connector in fig. 2 is connected to the PIN at the other end of the flat cable P to be tested. Here, the number of PIN legs of the M-terminal and the N-terminal may be set to be different according to the number of PIN legs of a specific flat cable to be tested. In addition, the contact D and the contact E on the M connector can be arranged on the N connector according to requirements, and the contact F and the contact G are arranged on the M connector or the N connector according to the single-wire serial connection rule.

It should be noted that the present invention is only directed to the flat cable connected by the PIN in a one-to-one correspondence, and if not, the present invention is not in the scope of the discussion.

The utility model discloses a design winding displacement test circuit, its simple structure, it is with low costs, and only need operate single-pole double-throw switch, can judge out the open short circuit condition of whole winding displacement fast through the pilot lamp, its efficiency of software testing is high, compares with equipment such as standard test equipment among the prior art or universal meter, and its volume has reduced widely, has greatly improved the convenience.

Claims

1. A flat cable test circuit is characterized in that: the device comprises a power supply (B1), a single-pole double-throw switch (S1), a first current-limiting resistor (R1), a second current-limiting resistor (R2), a first indicator light (LED 1) and a second indicator light (LED 2), wherein the first current-limiting resistor (R1) and the first indicator light (LED 1), the second current-limiting resistor (R2) and the second indicator light (LED 2) are respectively connected in series and then connected to one end of the power supply (B1) in parallel, the single-pole end of the single-pole double-throw switch (S1) is connected with the other end of the power supply (B1), the double-throw end of the single-pole double-throw switch (S1) is respectively connected with pins of the first two single wires at one end of a to-be-tested flat wire (P), the single wires in the to-be-tested flat wire (P) belong to a plurality of single wires arranged, the odd-numbered series of the single wires are sequentially connected in series with one of the first current-limiting resistor (R1) and the second current-limiting resistor (R2), the single wires belonging to the even-numbered sequence are connected in series in sequence and then connected with the other one of the first current limiting resistor (R1) and the second current limiting resistor (R2) which is not connected with the single wires belonging to the odd-numbered sequence.

2. The flat cable test circuit of claim 1, wherein: among a plurality of single wires arranged in the to-be-tested flat cable (P), the single wires belonging to the odd number sequence are sequentially connected in series and then connected with the first current limiting resistor (R1), and the single wires belonging to the even number sequence are sequentially connected in series and then connected with the second current limiting resistor (R2).

3. The flat cable test circuit of claim 1, wherein: the power supply (B1) is a 3V button cell.