Test module for auditing safety test equipment

Abstract

The invention aims to provide the test module for auditing the safety test equipment, which is wide in application range, can effectively simplify the test operation process and is adaptive to automatic test. The system comprises a communication processing module, a high-voltage relay switching module and a plurality of high-voltage load modules, the communication processing module is in communication connection with an external control computer through a connection port and receives a control instruction, and the output end of the communication processing module is connected with the control end of the high-voltage relay switching module. An input end of the high-voltage relay switching module is connected with an output port of safety test equipment, a plurality of input ends of the high-voltage relay switching module are correspondingly connected with one ends of the plurality of high-voltage load modules, and the other ends of the plurality of high-voltage load modules are communicated with the safety test equipment. The method is applied to the technical field of equipment testing.

Description

Technical Field

[0001] This invention relates to the technical field of equipment testing, and in particular to a test module for auditing safety testing equipment. Background Technology

[0002] As an important tool in the electrical field, the development of comprehensive electrical safety testing equipment has been accompanied by advancements in electrical technology and improvements in safety standards. Initially, the industry relied mainly on manual testing and simple instruments. Later, with the development of electronic technology, the automation and intelligence levels of testing instruments improved, and development became dependent on the integration of basic electrical knowledge and mechanical manufacturing technology.

[0003] Meanwhile, with the development of new energy and production line automation, the requirements for electrical safety testing equipment are constantly increasing, which has promoted technological innovation and product iteration in the industry. As a result, there are many types and specifications of safety testing equipment. The specifications of safety testing equipment for different products also need to be adjusted accordingly. Safety testing equipment also needs to be tested and adjusted before actual application to ensure the reliability of equipment operation and the accuracy of test results.

[0004] Currently, the industry typically adjusts safety testing equipment by defining specific test modules for each type of equipment. The test modules are then adjusted and wired according to the products being tested by the equipment. When the test plan is changed, the test modules need to be rewired, which is cumbersome. Furthermore, due to the complexity and large number of interfaces and wiring, mis-insertion can easily damage components.

[0005] Therefore, there is a need for a test module for auditing safety testing equipment that has a wide range of applications and can effectively simplify the testing operation process. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a test module for audit and safety testing equipment that has a wide range of applications, can effectively simplify the test operation process, and is compatible with automated testing.

[0007] The technical solution adopted in this invention is as follows: This invention includes a communication processing module, a high-voltage relay switching module, and several high-voltage load modules. The communication processing module communicates with an external control computer through a connection port and receives control commands. The output terminal of the communication processing module is connected to the control terminal of the high-voltage relay switching module. The input terminal of the high-voltage relay switching module is connected to the output port of the safety testing equipment. Several input terminals of the high-voltage relay switching module are correspondingly connected to one end of several high-voltage load modules, and the other end of several high-voltage load modules is connected to the safety testing equipment.

[0008] As can be seen from the above scheme, by communicating with an external control computer through the communication processing module, operators can input control commands via the external computer and control the high-voltage relay switching module through the communication processing module. This enables the equipment to automatically switch between different high-voltage load modules without requiring manual rewiring, ensuring operational safety and improving testing reliability. The high-voltage relay switching module is connected to safety testing equipment as a simulation product to obtain the operating parameters of the safety testing equipment for auditing and testing.

[0009] In a preferred embodiment, the present invention further includes a power module, the power module comprising a first power conversion chip and a second power conversion chip connected to the power supply terminal of the connection port, the output ports of the first power conversion chip and the second power conversion chip being connected to the processing communication module and the high-voltage relay switching module for power supply.

[0010] In a preferred embodiment, the high-voltage load module includes at least one first load resistor and several load capacitors connected in parallel.

[0011] In a preferred embodiment, the communication processing module includes a conversion chip, an I / O expander, and a decoder connected in sequence. The conversion chip is connected to the communication terminal of the connection port. The conversion chip converts the signal into an I2C signal to control the output of the I / O expander. The I / O expander controls the conduction state of several channels of the high-voltage relay switching module through several output terminals of the decoder.

[0012] A further preferred embodiment is that the high-voltage relay switching module includes several groups of high-voltage relays, and several output terminals of the decoder are connected to the control coils of several groups of high-voltage relays via optocouplers.

[0013] In a preferred embodiment, the high-voltage relay switching module further includes several second load resistors and several groups of high-current relays connected in parallel, with each group of high-current relays connected in series with at least one of the second load resistors. Attached Figure Description

[0014] Figure 1 This is a system block diagram of the present invention; Figure 2 This is the circuit schematic of the conversion chip; Figure 3 This is a circuit schematic of the IO expander and the decoder; Figure 4 This is a circuit diagram of the high-voltage relay switching module and several of the high-voltage load modules. Detailed Implementation

[0015] like Figures 1 to 4As shown, in this embodiment, the present invention includes a communication processing module 1, a high-voltage relay switching module 2, and several high-voltage load modules 3. The communication processing module 1 communicates with an external control computer 5 through a connection port 4 and receives control commands. The output terminal of the communication processing module 1 is connected to the control terminal of the high-voltage relay switching module 2. The input terminal of the high-voltage relay switching module 2 is connected to the output port of the safety testing equipment 6. Several input terminals of the high-voltage relay switching module 2 are correspondingly connected to one end of several high-voltage load modules 3, and the other end of several high-voltage load modules 3 is connected to the safety testing equipment 6.

[0016] In this embodiment, the invention further includes a power module 7, which includes a first power conversion chip and a second power conversion chip connected to the power supply terminals of the connection port 4. The output ports of the first and second power conversion chips are connected to the processing communication module and the high-voltage relay switching module 2 for power supply. The first power chip boosts the 5V power input from the connection port 4 to 24V to supply the high-voltage relay switching module 2, and the second power chip steps down the 5V power input from the connection port 4 to 3.3V to supply the communication processing module 1.

[0017] The high-voltage load module 3 includes at least one first load resistor and several load capacitors connected in parallel. In this embodiment, there are four sets of the high-voltage load modules 3, and each set of the high-voltage load modules 3 includes a different combination of the first load resistor and the load capacitor, thereby providing four different test specifications required for equipment testing.

[0018] In this embodiment, the communication processing module 1 includes a conversion chip, an I / O extender, and a decoder connected in sequence. The conversion chip is a USB-to-I2C chip of model FT4222. The conversion chip is connected to the communication terminal of the connection port 4, which is a USB interface. The connection port 4 obtains communication signals and power from the control computer 5 through a USB connection cable. The conversion chip converts the signals into I2C signals to control the output of the I / O extender. The I / O extender controls the conduction state of several channels of the high-voltage relay switching module 2 through several output terminals of the decoder. The I / O extender outputs through the decoder, thereby achieving I / O mutual exclusion and ensuring that only one set of the high-voltage load modules 3 is turned on at the same time.

[0019] In this embodiment, the communication processing module 1 further includes a memory, which is communicatively connected to the conversion chip. The control computer 5 reads data from the memory through the conversion chip. The memory stores BOM type data for identifying and confirming parameter information of several high-voltage load modules 3.

[0020] In this embodiment, the high-voltage relay switching module 2 includes several sets of high-voltage relays, and several output terminals of the decoder are connected to the control coils of the several sets of high-voltage relays via optocouplers. High- and low-voltage isolation is achieved through the optocouplers, enabling the use of low-voltage I / O signals to control high-voltage (2130V / 4250V) signals.

[0021] In this embodiment, the high-voltage relay switching module 2 further includes several second load resistors and several groups of high-current relays connected in parallel, with each group of high-current relays connected in series with at least one of the second load resistors. The high-voltage relay switching module 2 also includes a third load resistor connected in series between the output port and the input port of the safety testing equipment 6. High-current testing is performed using the high-current relays, with the second load resistors serving as the load in the circuit.

[0022] The present invention also includes the following specific workflow: Step S1: Connect the output port of the safety test device 6 to the input port of the high-voltage relay switching module 2, and reconnect the output terminals of several high-voltage load modules 3 to the input port of the safety test device 6. The connection port 4 is connected to the control computer 5 via a USB cable. Step S2: During the test, the operator supplies power to the power module 7 through the control computer 5, obtains load information by communicating with the conversion chip, and controls the conduction channel of the high-voltage relay switching module 2.

[0023] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. A test module for auditing safety testing equipment, characterized in that: It includes a communication processing module (1), a high-voltage relay switching module (2), and several high-voltage load modules (3). The communication processing module (1) communicates with an external control computer (5) through a connection port (4) and receives control commands. The output end of the communication processing module (1) is connected to the control end of the high-voltage relay switching module (2). The input end of the high-voltage relay switching module (2) is connected to the output port of the safety testing equipment (6). Several input ends of the high-voltage relay switching module (2) are connected to one end of several high-voltage load modules (3), and the other end of several high-voltage load modules (3) is connected to the safety testing equipment (6).

2. The test module for auditing safety regulatory test equipment of claim 1, wherein: It also includes a power module (7), which includes a first power conversion chip and a second power conversion chip connected to the power supply terminal of the connection port (4). The output ports of the first power conversion chip and the second power conversion chip are connected to the processing communication module and the high voltage relay switching module (2) for power supply.

3. The test module for auditing safety regulatory test equipment of claim 1, wherein: The high-voltage load module (3) includes at least one first load resistor and several load capacitors connected in parallel.

4. The test module for auditing safety regulatory test equipment of claim 1, wherein: The communication processing module (1) includes a conversion chip, an IO expander and a decoder connected in sequence. The conversion chip is connected to the communication terminal of the connection port (4). The conversion chip converts the signal into an I2C signal to control the output of the IO expander. The IO expander controls the conduction state of several channels of the high-voltage relay switching module (2) through several output terminals of the decoder.

5. The test module for auditing safety regulatory test equipment of claim 4, wherein: The high-voltage relay switching module (2) includes several sets of high-voltage relays, and several output terminals of the decoder are connected to the control coils of several sets of high-voltage relays through optocouplers.

6. The test module for auditing safety regulatory test equipment of claim 5, wherein: The high-voltage relay switching module (2) also includes several second load resistors and several groups of parallel high-current relays, with each group of high-current relays connected in series with at least one of the second load resistors.

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