Switch electrical test circuit board and test device

Abstract

The utility model discloses a switch electrical test circuit board and a test device, relates to a test machine, and is used for improving the universality and flexibility of the test machine. The switch electrical test circuit board comprises a programmed switch circuit, a serial port, a power module circuit, a first socket, a power switch, at least one power supply relay and second sockets in one-to-one correspondence with the power supply relays; the first socket and the power switch are respectively connected with the power module circuit; the first socket is connected with the common end of each power supply relay. The output ends of the power supply relays are connected with the second sockets in a one-to-one correspondence manner. The power module is connected with a power circuit of the programmed switch circuit; a serial port is connected with a serial port circuit of the programmed switch board; the programmed switch circuit is respectively connected with the control input ends of the power supply relays one by one through the switch sub-circuits; the power supply circuit, the serial port circuit and the switch sub-circuit are respectively connected with the control module circuit of the programmed switch circuit. The testing device has the advantages of being high in universality, stability and safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to a test machine, in particular to a switch electricity test circuit board and testing arrangement. BACKGROUND

[0002] Electronic equipment needs to carry out stability test after designing.

[0003] At present, when doing stability and reliability test of thousands of times of switch-on and switch-off of electronic equipment, the equipment is powered on by manual operation of equipment power switch, and the equipment is powered off after the equipment is completely started.

[0004] Manual operation is time-consuming and laborious, the test period is long, and the idle waiting time of the operator for the complete start of the equipment is seriously wasted. The test machine based on program-controlled switch control provides a feasible idea to solve the problem.

[0005] However, the test machine based on program-controlled switch control on the market is basically a special customized device, which cannot easily update the test rules after customization, and has poor universality and flexibility. INVENTION CONTENTS

[0006] The purpose of the present application is to provide a switch electricity test circuit board and testing arrangement to solve the problem of poor universality and flexibility of the current test machine based on program-controlled switch control.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] A switch electricity test circuit board comprises a program-controlled switch circuit, a serial port, a power module circuit, a first socket, a power switch, at least one power supply relay and a second socket corresponding to the power supply relay; wherein,

[0009] The first socket and the power switch are connected to the power module circuit respectively;

[0010] The first socket is connected to the common end of each power supply relay, and the output end of each power supply relay is connected to the second socket one by one;

[0011] The power module is connected to the power circuit of the program-controlled switch circuit;

[0012] The serial port is connected to the serial port circuit of the program-controlled switch circuit;

[0013] The program-controlled switch circuit is connected to the control input end of each power supply relay through a switch sub-circuit one by one;

[0014] The power circuit, serial port circuit and switch sub-circuit are connected to the control module circuit of the program-controlled switch circuit.

[0015] Further, each of the switch sub-circuits is respectively configured with a voltage isolation switch connected to a control input end of the corresponding power supply relay.

[0016] Further, the voltage isolation switch is a relay.

[0017] Further, each of the switch sub-circuits is respectively provided with an optocoupler, and each of the voltage isolation switches is respectively connected to an output end of the corresponding optocoupler, and the closing or opening of the voltage isolation switch is controlled by the on-off state of the optocoupler.

[0018] Further, the serial port circuit is an RS232 serial port circuit and / or an RS485 serial port circuit.

[0019] Further, the power supply relay is two.

[0020] To solve the above problems, the utility model also provides a switch electricity test device, including device casing, be provided with above-mentioned switch electricity test circuit board in device casing, the serial port, first socket, power switch and second socket are arranged on the surface of device casing respectively.

[0021] Summarized above, because adoptes above-mentioned technical scheme, the utility model has the beneficial effect that:

[0022] The switch electricity test circuit board and the test device provided by the utility model allow the control module circuit of the program-controlled switch circuit to write updated test rules through the serial port, and the control module circuit can control the closing or opening state of the corresponding power supply relay through the corresponding switch sub-circuit according to the written test rules, thereby realizing the power-on and power-off of the measured electronic device and improving the flexibility of electronic device testing. In addition, the power supply relay is usually connected to 22V or 360V mains, and the working voltage of the program-controlled switch circuit is usually 5V. The switch sub-circuit controls the closing or opening of the power supply relay through the voltage isolation switch to realize the isolation of the mains, thereby ensuring the safety of the device and the operator. The serial port circuit of the program-controlled switch circuit supports the RS232 serial port standard and / or the RS485 serial port standard, further improving the applicability to application scenarios. Setting the power supply relay to two or more can realize the testing of multiple electronic devices at the same time and improve the testing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the structure diagram of the switch electricity test circuit board provided by the utility model embodiment.

[0024] Figure 2 is the pin diagram of the control module circuit in the utility model embodiment.

[0025] Figure 3 is a circuit diagram of the program-controlled switch circuit in the embodiment of the utility model.

[0026] Figure 4 is a circuit diagram of the switch sub-circuit in the embodiment of the utility model.

[0027] Figure 5 is a circuit diagram of the serial port circuit in one embodiment of the utility model.

[0028] Figure 6 is a circuit diagram of the serial port circuit in another embodiment of the utility model.

[0029] Figure 7 is a circuit diagram of the power supply circuit in the embodiment of the utility model.

[0030] Figure 8 is a structure diagram of the switch test device provided by the embodiment of the utility model.

[0031] Marked in the figure: 1 is the upper computer, 2 is the switch test device, 21 is the first socket, 22 is the serial port, 23 is the power module circuit, 24 is the power supply relay, 25 is the program-controlled switch circuit, 26 is the power switch, 27 is the second socket, 28 is the device shell. DETAILED DESCRIPTION

[0032] The utility model will be described in detail below in combination with the drawings.

[0033] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0034] In view of the problems that the efficiency of on-off test of electronic equipment by artificial is low, and the versatility and flexibility of the current test machine based on program-controlled switch control are poor, the embodiments of the application provide a switch test circuit board and a test device to improve the versatility and flexibility of the test machine.

[0035] As shown in Figure 1 The switch test circuit board provided by the application includes a program-controlled switch circuit 25, a serial port 22, a power module circuit 23, a first socket 21, a power switch 26, at least one power supply relay 24 and a second socket 27 corresponding to the power supply relay 24. Among them:

[0036] The first socket 21 and the power switch 26 are connected to the power module circuit 23 respectively;

[0037] The first socket 21 is connected to the common terminal of each power supply relay 24, and the output terminal of each power supply relay 24 is connected to the second socket 27 in a corresponding manner.

[0038] The power module is connected to the power circuit of the programmable switch circuit 25;

[0039] Serial port 22 is a serial port circuit for connecting to a programmable switch circuit;

[0040] The programmable switch circuit 25 is connected to the control input terminals of each power supply relay 24 through a switch sub-circuit;

[0041] The power supply circuit, serial port circuit, and switch sub-circuit are respectively connected to the control module circuit of the programmable switch circuit 25.

[0042] The working principle of this switching power test circuit board is as follows: 220V AC mains power (or 360V AC mains power) is connected to the first socket 21, stepped down to 12V (or 20V) by the power module circuit 23, and then connected to the power circuit of the programmable switch circuit 25 to power the programmable switch circuit 25. For example, the power module circuit 23 can be selected as MW LRS-35-12 to convert AC mains power to 12V DC power to power the programmable switch circuit 25. The power module circuit 23 is controlled by the power switch 26, that is, the opening or closing of the switching power test circuit board is controlled by the power switch 26. In use, the host computer 1 writes test rules to the control module circuit of the programmable switch circuit 25 through the serial port 22 (test rule configuration is not required during production), such as setting the serial port baud rate to 9600, setting the power-on time to 30 seconds, the power-off time to 5 seconds, and the number of tests to 10, etc. Figure 2 As shown, the control module circuit of the programmable switch circuit 25 takes a single-chip microcomputer STC1 as an example (or an MCU, PLC, etc.). Based on the configured test rules, it turns on the corresponding power supply relay 24 at the configured power-on time and turns off the corresponding power supply relay 24 at the configured power-off time through the switch sub-circuit, repeating this process. When the electronic device under test is connected to the second socket 27, the mains power supplied by the first socket 21 is connected to the corresponding second socket 27 when the power supply relay 24 is turned on, thus powering on the electronic device. When the power supply relay 24 is turned off, the electronic device is powered off. The power supply relay 24 can be a 10A-level electromagnetic power relay such as HF13FA240-2Z1T.

[0043] In order to prevent the influence of the mains on the program-controlled switch circuit 25, as an optional embodiment, a voltage isolation switch is arranged on each switch sub-circuit, and the voltage isolation switch is connected to the control input end of the corresponding power supply relay 24. The voltage isolation switch isolates the working voltage (usually 5V) of the program-controlled switch circuit 25 from the transmission voltage (mains) of the power supply relay 24, so as to ensure the safety of the program-controlled switch circuit 25 and the personal safety of the operator.

[0044] As shown in Figure 3 Fig. 1 is a circuit schematic diagram of the program-controlled switch circuit 25 with the single-chip microcomputer STC1 as the control module circuit. As shown in Figure 4 As an optional embodiment, the voltage isolation switch is assembled by using a relay, such as a small-sized relay with the model number of HF46F-G, which has the characteristics of low power consumption. As shown in Figure 4 Fig. 2 is an embodiment of designing two power supply relays 24, and the corresponding two switch sub-circuits are arranged with a photo-coupler on each switch sub-circuit, and the output end of each voltage isolation switch is connected to the corresponding photo-coupler, and the on-off state of the photo-coupler controls the closing or opening of the voltage isolation switch.

[0045] As shown in Figure 4 The P0.4 pin and the P0.5 pin of the single-chip microcomputer STC1 are connected to the photo-coupler N6 and the photo-coupler N7, respectively. Taking the switch sub-circuit with the photo-coupler N6 as an example, the output end of the photo-coupler N6 is connected to the pin 2 of the relay K6 through the transistor Q7, the emitter of the transistor Q7 is grounded, the output end of the photo-coupler N6 is connected to the base of the transistor Q7, and the pin 1 of the relay K6 is connected to VCC. When the photo-coupler N6 is turned on, the photo-coupler N6 outputs a high level, the transistor Q7 is turned on, the pin 2 of the relay K6 is grounded, the magnetic suction coil of the relay K6 is turned on, and the closing of the switch is attracted, the high level control signal is transmitted from the OUT1 port to the control input end of the corresponding power supply relay 24, the power supply relay 24 is turned on, and the light-emitting diode LED22 is turned on to indicate that the switch sub-circuit is in the working state. When the photo-coupler N6 outputs a low level, the power supply relay 24 is turned off. In addition, a standby switch sub-circuit can be connected to the P0.6 pin of the single-chip microcomputer STC1.

[0046] As an optional embodiment, the serial port circuit of the program-controlled switch circuit 25 is an RS232 serial port circuit and / or an RS485 serial port circuit, so as to be compatible with the RS232 serial port standard and / or the RS485 serial port standard, and to improve the universality of the switch test circuit board.

[0047] In some optional embodiments, as shown in Figure 5As shown, the P3.0 pin and the P3.1 pin of the single-chip microcomputer STC1 are connected with the MAX232 chip and the corresponding peripheral circuit, and the serial port 22 is connected through the pin socket COM1 to realize the support for the RS232 serial port standard. Figure 6 As shown, the P1.2 pin and the P1.3 pin of the single-chip microcomputer STC1 are connected with the MAX2 chip and the corresponding peripheral circuit, and the serial port 22 is connected through the plugboard P1 to realize the support for the RS485 serial port standard.

[0048] As shown in the figure, Figure 7 The circuit diagram of the power supply circuit of the program-controlled switch circuit is shown in the figure, and the power supply voltage stabilizing chip LM1 (model number LM2576T5.0) is used to convert the voltage input from Power1 into a 5V stabilized voltage output from the OUT pin to provide a stabilized power supply for the single-chip microcomputer STC1.

[0049] As shown in the figure, Figure 8 As shown in the figure, the switch electricity testing device 2 provided by the present application comprises a device housing 28, and the switch electricity testing circuit board of the above-mentioned embodiments is arranged in the device housing 28. The serial port 22, the first socket 21, the power switch 26 and the second socket 27 of the switch electricity testing circuit board are arranged on the surface of the device housing 28. For example, the second sockets 27 are arranged side by side on the front surface of the device housing 28, the power switch 26 is also arranged on the front surface, and the first socket 21 and the serial port 22 are arranged on the back surface of the device housing 28. Long waist-shaped grooves are arranged on the left and right side surfaces of the device housing 28 to facilitate the carrying.

[0050] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A switched electrical test circuit board, characterized by, The switch circuit includes a program-controlled switch circuit, a serial port, a power module circuit, a first socket, a power switch, at least one power supply relay, and a second socket corresponding to the power supply relay one by one. The first socket and the power switch are connected to the power module circuit respectively. The first socket is connected to the common end of each power supply relay, and the output end of each power supply relay is connected to the second socket one by one. The power module is connected to the power circuit of the program-controlled switch circuit. The serial port is connected to the serial port circuit of the program-controlled switch circuit. The program-controlled switch circuit is connected to the control input end of each power supply relay through a switch sub-circuit one by one. The power circuit, the serial port circuit, and the switch sub-circuit are connected to the control module circuit of the program-controlled switch circuit.

2. The switch electrical test circuit board of claim 1, wherein, Each switch sub-circuit is provided with a voltage isolation switch, and the voltage isolation switch is connected to the control input end of the corresponding power supply relay.

3. The switch electrical test circuit board of claim 2, wherein, The voltage isolation switch is a relay.

4. Switched electrical test circuit board according to claim 2 or 3, characterized in that Each switch sub-circuit is provided with an optocoupler, and each voltage isolation switch is connected to the output end of the corresponding optocoupler, and the closing or opening of the voltage isolation switch is controlled by the on-off state of the optocoupler.

5. The switched electrical test circuit board of claim 1, wherein, The serial port circuit is an RS232 serial port circuit and / or an RS485 serial port circuit.

6. The switched electrical test circuit board of claim 1, wherein, The power supply relay is two.

7. A switched electrical test device comprising a device housing, characterized in that The device housing is provided with a switch circuit test board as claimed in any one of claims 1-6, and the serial port, the first socket, the power switch, and the second socket are arranged on the surface of the device housing.

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