Communication adapter board test circuit

Abstract

The utility model discloses a communication adapter board test circuit, which relates to the test field, and comprises a power supply module used for supplying 5V voltage, and the power supply module, an indication module, a test board module and a tested board module form a loop together; the indication module is used for being provided with a plurality of light-emitting tubes, and when the light-emitting tubes emit light, the channel corresponding to the current tested board is normal; when the light-emitting tube does not emit light, the channel corresponding to the current tested board is abnormal; and the test board module is used for arranging three test board units, compared with the prior art, the beneficial effects of the utility model are that the indication module uses an LED parallel circuit to test the conduction performance of the circuit, the mode is simple, and the cost is very low; the test board module is an eight-pin connector, can be applied to the conduction test of any communication adapter board using a connector within eight pins, and is wide in application range; a certain branch circuit with the open circuit fault can be directly determined through the corresponding LED, and observation is visual.

Description

TECHNICAL FIELD

[0001] The utility model relates to test field, and specifically is a communication adapter plate test circuit. BACKGROUND

[0002] Generally, in order to meet the needs of long-distance, multi-device and anti-interference communication, CAN / RS485 and other communication methods are generally used, and at the same time, in order to save the size of the core function board or optimize the internal device layout, a communication adapter plate is usually used to divide the only communication port on the core board into two parts and extend it to the opening of the shell at the same time, so as to facilitate communication between at least two external devices and itself.

[0003] In the prior art CN217904548U, an ACDC power module provides power, an MCU and a level conversion circuit generate an electrical signal, and a to-be-tested string is inserted into the built communication circuit, and finally the content of the received signal is judged. The test method adopts a programmable processor and a level conversion circuit to build a test circuit, which is too high in cost and needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a communication adapter plate test circuit to solve the problems in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A communication adapter plate test circuit comprises:

[0007] A power supply module is used to supply 5V voltage, and the power supply module, an indication module, a test board module and a tested board module jointly constitute a loop;

[0008] The indication module is provided with a plurality of light emitting tubes, and when the light emitting tubes emit light, it indicates that the current tested board corresponds to a normal channel; when the light emitting tubes do not emit light, it indicates that the current tested board corresponds to an abnormal channel;

[0009] The test board module is used to set three test board units to provide an interface for the tested board module;

[0010] The tested board module is used to set three tested board units as to-be-tested devices;

[0011] The power supply module is connected with the indication module, the indication module is connected with the test board module, the test board module is connected with the power supply module, and the test board module is externally connected with the tested board module.

[0012] As a further scheme of the utility model, the power supply module comprises a power supply DC, the positive electrode of the power supply DC is connected with the indication module, and the negative electrode of the power supply DC is connected with the test board module.

[0013] As a further scheme of the utility model: the indication module includes 8 indication units, one end of the 8 indication units is connected with the power supply module, the other end of the 8 indication units is connected with different interfaces of the test board module respectively, the indication unit includes diode LED1, resistance R1, the anode of diode LED1 is connected with the anode of the power supply module, the cathode of diode LED1 is connected with one end of resistance R1, the other end of resistance R1 is connected with the test board module.

[0014] As a further scheme of the utility model: the test board module includes three test board connectors, the test board connector is 8-pin connector, 8 interfaces of one test board connector are connected with the indication module, 16 interfaces of the other two test board connectors are connected with the power supply module after being connected with the same common point, the three test board connectors are connected with the test board module.

[0015] As a further scheme of the utility model: the test board module includes three test board connectors, the test board connector is 8-pin connector, 8 interfaces of one test board connector are connected with the indication module, 16 interfaces of the other two test board connectors are connected with the power supply module after being connected with the same common point, the three test board connectors are connected with the test board module.

[0016] Compared with the prior art, the utility model has the advantages that: the indication module uses LED parallel circuit test circuit conduction performance, simple mode, very low cost; the test board module is 8-pin connector, can be applied to the conduction test of any communication adapter board using 8-pin connector, wide application range; can directly determine a branch with open circuit fault through corresponding LED, observation is intuitive. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a kind of circuit diagram of communication adapter board test circuit. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model, apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the range of the utility model protection.

[0019] Please refer to Figure 1 A kind of communication adapter board test circuit, comprising:

[0020] Power supply module, for supplying 5V voltage, power supply module and indication module, test board module, test board module are connected to form a loop;

[0021] The indication module is provided with a plurality of light emitting tubes, and the light emitting tubes emit light to indicate that the channel corresponding to the tested board is normal; and the light emitting tubes do not emit light to indicate that the channel corresponding to the tested board is abnormal.

[0022] The test board module is provided with three test board units, and provides an interface for the tested board module.

[0023] The tested board module is provided with three tested board units, and serves as a device to be tested.

[0024] The power supply module is connected with the indication module, the indication module is connected with the test board module, the test board module is connected with the power supply module, and the test board module is externally connected with the tested board module.

[0025] In the embodiment, please refer to Figure 1 The power supply module includes a power supply DC, the positive pole of the power supply DC is connected with the indication module, and the negative pole of the power supply DC is connected with the test board module.

[0026] The power supply DC outputs a 5V voltage.

[0027] In the embodiment, please refer to Figure 1 The indication module includes eight indication units, one end of the eight indication units is connected with the power supply module, the other end of the eight indication units is respectively connected with different interfaces of the test board module, and the indication unit includes a diode LED1 and a resistor R1, the positive pole of the diode LED1 is connected with the positive pole of the power supply module, the negative pole of the diode LED1 is connected with one end of the resistor R1, and the other end of the resistor R1 is connected with the test board module.

[0028] When the power supply module, the indication module, the test board module and the tested board module jointly form a loop, the corresponding LED tube emits light to indicate that the channel of the tested board module is normal, and the corresponding LED tube emits light abnormally to indicate that the channel of the tested board module is abnormal.

[0029] In the embodiment, please refer to Figure 1 The test board module includes three test board connectors, the test board connector is an 8-pin connector, the eight interfaces of one test board connector are connected with the indication module, and the sixteen interfaces of the other two test board connectors are connected with the power supply module after being connected with a same common point, and the three test board connectors are externally connected with the tested board module.

[0030] The three test board connectors are respectively TEST BOARD COM1, TEST BOARD COM2 and TEST BOARD COM3, and the three test board connectors are externally connected with the three tested board connectors.

[0031] In the embodiment, please refer to Figure 1The tested board module comprises three tested board connectors, the tested board connectors are 8-pin connectors, and the 8 interfaces of the three tested board connectors are connected one by one.

[0032] The three tested board connectors are COM1, COM2 and COM3 respectively, COM2 and COM3 are branched from COM1, and are connected with the three tested board connectors respectively, for example, the first interface of COM1, when the channel where the first interface of COM1 is located is normal, the positive pole of a power supply DC, a diode LED1, a resistor R1, the first interface of TEST BOARD COM1, the first interface of COM1, the first interface of COM2 / the first interface of COM3, the first interface of TEST BOARD COM2 / the first interface of TEST BOARD COM3, and the negative pole of the power supply DC constitute a loop, the diode LED1 emits light to indicate that the channel where the first interface of COM1 is located is normal, and in the same way, whether the channels where the 8 interfaces of COM1 are located are all normal or not can be judged by observing the states of other LEDs, and the channel where the abnormal interface is located is determined.

[0033] The working principle of the utility model is: the power supply module is used for supplying 5V voltage, the power supply module and the indication module, the test board module and the tested board module constitute a loop together; the indication module is used for being provided with a plurality of light emitting tubes, the light emitting tubes emit light to indicate that the current tested board corresponding channel is normal; the light emitting tubes do not emit light to indicate that the current tested board corresponding channel is abnormal; the test board module is used for setting three test board units, and provides interfaces for the tested board module; the tested board module is used for setting three test board units, and is used as a device to be measured.

[0034] 1、At present, the unit price of single-color green LED on the market is not more than 0.01 yuan, the unit price of 0805 type SMD resistor is not more than 0.0001 yuan, the unit price of domestic RJ45 socket is not more than 2 yuan, the size of PCB can be controlled within 8CM*8CM, and the price of the double-sided panel after processing is not more than 20 yuan in total. In the utility model, 8 LEDs, 8 SMD resistors, three RJ45 sockets and a PCB are calculated, and the total price is about 26 yuan. The price of the traditional PCBA fixture is in the level of thousands of yuan, and the method is simple and the cost is very low.

[0035] 2、The three connectors on the test board are connected with the connectors on the tested board one by one, so that the conduction condition from one port to another port on the tested board can be directly tested. And it is suitable for testing any connector with 8 pins or less, and the application range is wide.

[0036] 3、The branch with a circuit fault can be directly determined by corresponding LED, and the observation is intuitive.

[0037] It is apparent for a person skilled in the art that the present application is not restricted to the details of the exemplary embodiments described above and that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the application. Therefore, the embodiments should be considered as exemplary only and in no way as restrictive.

[0038] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A communications patch panel test circuit, comprising: The communication adapter test circuit comprises: A power supply module for supplying 5V voltage, the power supply module and the indication module, the test board module and the tested board module together constitute a loop; The indication module is provided with a plurality of light emitting tubes, and the light emitting tubes emit light when indicating that the current tested board corresponds to a normal channel; when the light emitting tubes do not emit light, it indicates that the current tested board corresponds to an abnormal channel; The test board module is used for setting three test board units to provide an interface for the tested board module; The tested board module is used for setting three tested board units as the devices to be tested. The power supply module is connected with the indication module, the indication module is connected with the test board module, the test board module is connected with the power supply module, and the test board module is externally connected with the tested board module.

2. The communications patch panel test circuit of claim 1, wherein, The power supply module comprises a power supply DC, the positive electrode of the power supply DC is connected with the indication module, and the negative electrode of the power supply DC is connected with the test board module.

3. The communications patch panel test circuit of claim 1, wherein, The indication module comprises eight indication units, one end of the eight indication units is connected with the power supply module, the other end of the eight indication units is respectively connected with different interfaces of the test board module, the indication unit comprises a diode LED1 and a resistor R1, the positive electrode of the diode LED1 is connected with the positive electrode of the power supply module, the negative electrode of the diode LED1 is connected with one end of the resistor R1, and the other end of the resistor R1 is connected with the test board module.

4. The communication patch panel test circuit of claim 1 or 3, wherein, The test board module comprises three test board connectors, the test board connector is an 8-pin connector, the eight interfaces of one test board connector are connected with the indication module, and the sixteen interfaces of the other two test board connectors are connected with the power supply module after being connected with the same common point.

5. The communications patch panel test circuit of claim 4, wherein, The tested board module comprises three tested board connectors, the tested board connector is an 8-pin connector, the eight interfaces of the three tested board connectors are connected one by one, and the three tested board connectors are externally connected with the test board module.

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