Blocking characteristic testing device for wireless control voltage regulation

Abstract

The utility model relates to a blocking characteristic testing device for wireless control voltage regulation. The blocking characteristic testing device is composed of an external remote control device and a blocking testing device. Wherein the external remote control device internally comprises an external processor system board, a polymer lithium battery, a rotary encoder and an external wireless transceiver module, and the voltage regulating system in the blocking test equipment mainly comprises an internal wireless transceiver module, a built-in processor system board, a power voltage conversion module and an electronic voltage regulator; the long-distance wireless voltage regulating device has the following characteristics: in consideration of safety problems in a high-voltage environment, when personnel cannot operate in a short distance and the voltage of a test device needs to be regulated in a long distance, the long-distance wireless voltage regulating device is used for carrying out a blocking characteristic test, so that the safety of test equipment users is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the field of the electronic industry, and particularly relates to a blocking characteristic test device for wirelessly controlling voltage regulation of a power semiconductor. Background Art

[0002] In the performance tests of thyristors, rectifier tubes and their modules, the blocking characteristic is one of the most critical characteristics of the devices, and each such semiconductor device leaving the factory needs to be tested for its blocking characteristic. Under some special high-voltage test conditions, the conventional blocking test equipment has the following drawbacks: the voltage regulating knob for adjusting the voltage is located on the panel of the equipment. Considering the personnel safety problem in a high-voltage environment, the voltage regulating knob cannot be operated closely, and the voltage needs to be adjusted remotely. Content of the Utility Model

[0003] To solve the above problems, the utility model provides a blocking characteristic test device for wirelessly controlling voltage regulation.

[0004] To achieve the above object, the technical solution adopted by the utility model is: a blocking characteristic test device for wirelessly controlling voltage regulation, including an external remote control device and a blocking test device. The external remote control device sends a wireless signal to the blocking test device. The external remote control device includes an external processor system board, the external processor system board is connected with a rotary encoder and an external wireless transceiver module, the external processor system board controls the external wireless transceiver module to send out a wireless signal. The blocking test device includes an internal processor system board, the internal processor system board is connected with an internal wireless transceiver module and a power voltage conversion module, the power voltage conversion module is connected with an electronic voltage regulator, and the internal wireless transceiver module receives the wireless signal sent by the external remote control device and conveys the wireless signal to the internal processor system board.

[0005] Further, I / O interfaces are arranged on both the external processor system board and the internal processor system board.

[0006] Further, the I / O interface of the external processor system board receives the pulses sent by the rotary encoder, and the external processor system board converts the pulses into serial port signals and then sends them out through the external wireless transceiver module.

[0007] Further, the I / O interface on the internal processor system board is connected with the internal wireless transceiver module.

[0008] Further, the internal processor system board is connected with the power voltage conversion module through a D / A converter, and the power voltage conversion module is connected with the set input end of the electronic voltage regulator.

[0009] Further, the external remote control device further includes a battery, and the battery is simultaneously connected with the external processor system board and the rotary encoder and provides a power supply for both of them.

[0010] The utility model has the following characteristics: By controlling an external remote control device, the voltage on the device can be adjusted without the operator approaching the device, realizing long-distance wireless voltage regulation of the blocking characteristic test device and improving the safety of the users of the test equipment. Description of the Drawings

[0011] Attached Figure 1 is the principle block diagram of the utility model;

[0012] Attached Figure 2 is the circuit schematic diagram of the external remote control device of the utility model;

[0013] Figure 3 is the circuit schematic diagram of the blocking test device of the utility model. Specific Embodiments

[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model. In the embodiments, the components of the embodiments of the present application usually described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application.

[0015] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be an electrical connection; it can be a hydraulic oil circuit connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0016] Refer to Figure 1As shown in the figure, a blocking characteristic test device for wireless control voltage regulation includes an external remote control device 1 and a blocking test device 2. The external remote control device 1 includes an external processor system board 3, a polymer lithium battery 4, a rotary encoder 5, and an external wireless transceiver module 6. The polymer lithium battery 4 provides a power supply for the external processor system board 3. When the voltage of the device needs to be adjusted, a series of pulses are sent by the rotary encoder 5 and connected to the I / O interface of the external processor system board 3, and then converted into a serial signal by the external processor system board 3 and sent out through the external wireless transceiver module 6.

[0017] The voltage regulation system in the blocking test device 2 mainly includes an internal processor system board 8, a power voltage conversion module 9, and an electronic voltage regulator 10. The internal processor system board 8 is connected to the power voltage conversion module 9 through a D / A converter, and the power voltage conversion module 9 is connected to the set input terminal of the electronic voltage regulator 10. The internal wireless transceiver module 7 is connected to the internal processor system board 8 through an I / O interface and is used to receive the wireless signal sent by the external wireless transceiver module 6.

[0018] According to the appendix Figure 2 The working principle of the present invention is specifically described as follows:

[0019] The external remote control device 1 is assembled by an external processor system board 3, a polymer lithium battery 4, a rotary encoder 5, and an external wireless transceiver module 6.

[0020] The PG6, PB13, PB14, PB15, PB7, and PG5 ports of the main chip U1 STM32F407ZGT6 in the external processor system board 3 are connected to the main chip U2 NRF24L01 in the external wireless transceiver module 6, which is used to control the external wireless transceiver module 6 to send out a wireless signal with a 2.4G frequency. The polymer lithium battery 4 is connected to the power input of the external processor system board 3 to provide a power supply for the external processor system board 3. The polymer lithium battery 4 is connected to the A and B pins of the EC11 rotary encoder 5 through resistors R1 and R2 to provide a pull-up power signal for the encoder. The A and B pins of the rotary encoder 5 are connected to the PA5 and PA6 I / O ports of the external processor system board 3 to provide the size increase and decrease and speed signals for voltage regulation to the external processor system board 3.

[0021] The part for realizing voltage regulation in the above-mentioned blocking test device 2 is mainly composed of an internal wireless transceiver module 7, an internal processor system board 8, a power voltage conversion module 9, and an electronic voltage regulator 10.

[0022] The PG6, PB13, PB14, PB15, PB7, and PG5 ports of the main chip U3 STM32F407ZGT6 on the built-in processor system board 8 are connected to the main chip U4 NRF24L01 in the internal wireless transceiver module 7, and are used to read the 2.4G frequency wireless signals sent by the external wireless transceiver module 6. The built-in processor system board 8 converts the content of the received 2.4G frequency wireless signals into 0 - 3.3V analog signals through a D / A converter and sends them out from its PA4 port. The increase or decrease in the magnitude and the speed of the increase or decrease of the 0 - 3.3V analog signals are determined by the increase or decrease in the magnitude of the voltage regulation and the speed signals in the wireless signals sent by the external wireless transceiver module 6.

[0023] The PA4 port of the main chip U3 STM32F407ZGT6 on the built-in processor system board 8 is connected to the U5 JLD11U voltage isolation module in the power voltage conversion module 9. After being isolated by the U5 JLD11U voltage isolation module, it is connected to the R3 resistor. The output of the R3 resistor is connected to the U6 UA741 operational amplifier chip. The U6 UA741 operational amplifier chip and the resistors R4 and R5 form a positive proportional amplification circuit, which amplifies the 0 - 3.3V analog signals isolated by the U5 JLD11U to 0 - 5V analog signals. And it is output to the analog quantity setting port of the electronic voltage regulator 10 through the 6th pin of the U6 UA741 chip, completing the linear control of the output voltage of the electronic voltage regulator, thereby realizing the function of wireless voltage regulation of the blocking characteristic test device.

[0024] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claimed rights.

Claims

1. A blocking characteristic test device for wireless controlled voltage regulation, characterized in that: It includes an external remote control device and a blocking test device, wherein the external remote control device sends a wireless signal to the blocking test device; The external remote control device includes an external processor system board, the external processor system board is connected to a rotary encoder and an external wireless transceiver module, and the external processor system board controls the external wireless transceiver module to send a wireless signal; The blocking test device includes a built-in processor system board, the built-in processor system board is connected to an internal wireless transceiver module and a power voltage conversion module, the power voltage conversion module is connected to an electronic voltage regulator, and the internal wireless transceiver module receives the wireless signal sent by the external remote control device and transmits the wireless signal to the built-in processor system board.

2. The blocking characteristic test device for wireless controlled voltage regulation according to claim 1, characterized in that: The external processor system board and the built-in processor system board are both provided with I / O interfaces.

3. The blocking characteristic test device for wireless controlled voltage regulation according to claim 2, characterized in that: The I / O interface of the external processor system board receives the pulse sent by the rotary encoder, and the external processor system board converts the pulse into a serial port signal and sends it out through an external wireless transceiver module.

4. The blocking characteristic test device for wireless controlled voltage regulation according to claim 2, characterized in that: The I / O interface on the built-in processor system board is connected to the internal wireless transceiver module.

5. The blocking characteristic test device for wireless controlled voltage regulation according to claim 1, characterized in that: The built-in processor system board is connected to the power voltage conversion module through a D / A converter, and the power voltage conversion module is connected to the setting input end of the electronic voltage regulator.

6. The blocking characteristic test device for wireless controlled voltage regulation according to claim 1, characterized in that: The external remote control device also includes a battery, which is connected to the external processor system board and the rotary encoder at the same time and provides power supply for both.

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