Load EMC test state control device and control method thereof

Abstract

The invention relates to the technical field of EMC (Electro Magnetic Compatibility) testing, and provides load EMC testing state control equipment and a control method thereof. The apparatus comprises: a pneumatic drive; the movable part is driven by the pneumatic driving part to act; the movable part is configured to have an actuation stroke covering a triggering stroke of a control part of a load so as to trigger the control part of the load through actuation; wherein the load is a load which is located in an EMC test area to carry out an EMC test, and the pneumatic driving part is arranged outside an effective electromagnetic interference range of the EMC test area. The load EMC test state control equipment provided by the embodiment of the invention can reduce the influence on the electromagnetic purity of an EMC test environment while realizing EMC test on loads in different load states, and improves the accuracy of a load EMC test result.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of EMC test, in particular to an EMC test state control device of a load and a control method thereof. BACKGROUND

[0002] With the deep evolution of the automotive industry towards electrification and intelligence, a large number of electronic control units, sensors, actuators, high-voltage electric drive systems, high-power on-board chargers, and complex vehicle infotainment systems and advanced driver assistance systems are integrated into limited vehicle body space. In order to prevent electromagnetic interference generated by these electronic loads from affecting the normal operation of safety-critical systems, and to ensure that the vehicle can still operate reliably in a complex external electromagnetic environment, EMC testing of the load of the vehicle is usually required.

[0003] The current way of EMC testing of the load of the vehicle is to place the load in an EMC test area, such as an anechoic chamber, for EMC testing. Since the state of most loads can be dynamically adjusted, the load state needs to be adjusted by operating the control components of the load, such as the switch components of the load, in order to perform EMC testing on loads in different load states. However, the anechoic chamber has a high radiation field, so in order to avoid the risk of exposure of personnel in a high radiation field, in the related art, the control components of the load are operated by remote electric control to adjust the load state of the load, thereby achieving EMC testing of loads in different load states. However, this method will cause electromagnetic interference to the EMC test area, affecting the electromagnetic purity of the EMC test area, and affecting the accuracy of the load EMC test results. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides an EMC test state control device of a load and a control method thereof, which can perform EMC testing on loads in different load states while reducing the impact on the electromagnetic purity of the EMC test environment and improving the accuracy of the load EMC test results.

[0005] The EMC test state control device of a load according to the first aspect of the present application comprises: a pneumatic drive part; a movable part driven by the pneumatic drive part to actuate; The movable part is configured to cover the actuation stroke of the control components of the load to trigger the control components of the load by actuation; Wherein, the load is a load in an EMC test area for EMC testing, and the pneumatic drive part is located outside the effective electromagnetic interference range of the EMC test area.

[0006] The embodiment of the present application provides a load EMC test state control device, which comprises a pneumatic driving part, the pneumatic driving part drives a movable part to actuate, the movable part is configured to actuate a stroke, and the stroke covers a touch stroke of a control component of a load in an EMC test area to actuate the control component of the load and trigger the control component of the load, and the pneumatic driving part is arranged outside an effective electromagnetic interference range of the EMC test area. Therefore, the movable part can be driven by the pneumatic driving part to actuate, the control component of the load is triggered to adjust a load state of the load for EMC test, the adjustment of the load state can be realized only by using airflow transmission, additional electronic components do not need to be introduced, when the adjustment of the load state is realized, additional electromagnetic interference on the EMC test of the load is avoided, and therefore, while the EMC test of the load in different load states is realized, the influence on electromagnetic purity of the EMC test environment is reduced, and the accuracy of the load EMC test result is improved.

[0007] According to one embodiment of the present application, the movable part comprises a pneumatic actuator driven by the pneumatic driving part, and the pneumatic actuator has a movable component driven by the pneumatic driving part to actuate, and the actuation stroke of the movable component covers the touch stroke of the control component of the load.

[0008] According to one embodiment of the present application, the pneumatic driving part comprises a solenoid valve and an air pump. The solenoid valve is used to control the on-off and direction of airflow generated by the air pump, so as to drive the movable part to actuate.

[0009] According to one embodiment of the present application, an output end of the air pump is connected with an air inlet of the solenoid valve, and an air outlet of the solenoid valve is connected with the movable part.

[0010] According to one embodiment of the present application, the device further comprises a control unit. The control unit is used to output a pulse signal to the solenoid valve every preset time interval, and control the solenoid valve to be turned on.

[0011] According to one embodiment of the present application, the preset time interval is determined according to a response time of the control component.

[0012] According to one embodiment of the present application, the control unit is specifically used for: determining an initial time interval according to the response time of the control component; determining the preset time interval according to a maximum EMC test time length required by the load in each load state and the initial time interval; outputting the pulse signal to the solenoid valve every preset time interval, and controlling the solenoid valve to be turned on.

[0013] According to one embodiment of the present application, the control unit is further configured to: According to the trigger pressure required by the control component, the pressure output to the movable part is adjusted when the electromagnetic valve is turned on to the pipeline between the air pump and the movable part.

[0014] According to the control method of the load EMC test state control device of the second embodiment of the present application, the method is applied to the control unit of any one of the above embodiments, and the method comprises: Every preset time interval, a pulse signal is output to the electromagnetic valve to control the electromagnetic valve to be turned on.

[0015] According to the control device of the load EMC test state control device of the third embodiment of the present application, the device is applied to the control unit of any one of the above embodiments, and the device comprises: The control module is configured to output a pulse signal to the electromagnetic valve every preset time interval to control the electromagnetic valve to be turned on.

[0016] According to the electronic device of the fourth embodiment of the present application, the electronic device comprises a processor and a memory storing a computer program, and the processor implements the control method of the load EMC test state control device of the third aspect when executing the computer program.

[0017] According to the load EMC test system of the fifth embodiment of the present application, the system comprises a load, a control component of the load, and the load EMC test state control device of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 The first structural schematic diagram of the load EMC test state control device provided by the embodiments of the present application is shown in the figure. Figure 2 The second structural schematic diagram of the load EMC test state control device provided by the embodiments of the present application is shown in the figure. Figure 3 The third structural schematic diagram of the load EMC test state control device provided by the embodiments of the present application is shown in the figure. Figure 4 The flowchart of the control method of the load EMC test state control device provided by the embodiments of the present application is shown in the figure. Figure 5 Fig. 1 is a structural schematic diagram of a control device of a load EMC test state control equipment provided by an embodiment of the present application; Figure 6 Fig. 1 is a structural schematic diagram of a control device of a load EMC test state control equipment provided by an embodiment of the present application;

[0020] Some of the reference numerals in the detailed description are as follows: 10 - pneumatic driving part; 20 - movable part; 30 - control component; 40 - load; 50 - control unit; 101 - electromagnetic valve; 102 - air pump; 1001 - pipeline. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0022] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "connected", "connected" and the like should be understood broadly, for example, can be direct electrical connection or connection, can be indirect electrical connection or connection through an intermediate medium, can be internal communication of two elements or interaction relationship of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0023] Next, the load EMC test state control equipment provided by the embodiments of the present application will be described and explained in detail through several specific embodiments.

[0024] With the deep evolution of the automotive industry towards electrification and intelligence, a large number of electronic control units, sensors, actuators, high-voltage electric drive systems, high-power on-board chargers, and complex on-board information entertainment systems and advanced driver assistance systems and other loads are integrated into limited vehicle body space. In order to prevent the electromagnetic interference generated by these electronic loads from affecting the normal work of safety-critical systems, and to ensure that the vehicle can still operate reliably in a complex external electromagnetic environment, EMC testing of the loads of the vehicle is usually required.

[0025] Currently, the EMC test of the load of the vehicle is performed by placing the load in an EMC test area, such as an anechoic chamber. Since the state of most loads can be dynamically adjusted, the control component of the load, such as the switch component of the load, needs to be operated to adjust the load state, so as to perform the EMC test on the load in different load states. For example, the load is turned on by pressing the switch of the load, so as to perform the EMC test on the load in the starting state, and then the load is turned off by pressing the switch of the load, so as to perform the EMC test on the load in the off state, thereby achieving the EMC test on the load in different load states.

[0026] However, the anechoic chamber has a high radiation field. In order to avoid the exposure risk of personnel in the high radiation field and improve the EMC test efficiency of the load, in the related art, the control component of the load is operated by a remote electric control, such as being connected to the control component by a wire, a cable or a communication bus, and being remotely operated by the wire, the cable or the communication bus, so as to adjust the load state of the load, thereby achieving the EMC test on the load in different load states. However, this method may cause electromagnetic interference to the EMC test area, affect the electromagnetic purity of the EMC test area, and affect the accuracy of the EMC test result of the load.

[0027] In view of the above technical problems, an EMC test state control device for a load is provided. The device includes a pneumatic driving part, which drives a movable part to actuate. The movable part is configured to cover the actuation stroke of the control component of the load in the EMC test area for the EMC test, so as to trigger the control component of the load by actuation, and the pneumatic driving part is located outside the effective electromagnetic interference range of the EMC test area. Thus, the pneumatic driving part can drive the movable part to actuate to trigger the control component of the load to adjust the load state of the load for the EMC test. Only the airflow transmission is used to adjust the load state, without introducing additional electronic components. When the load state is adjusted, no additional electromagnetic interference is caused to the EMC test of the load. Thus, while the EMC test on the load in different load states is achieved, the influence on the electromagnetic purity of the EMC test environment is reduced, and the accuracy of the EMC test result of the load is improved.

[0028] According to some embodiments of the present application, an EMC test state control device for a load is provided. As shown in Figure 1 the device includes: a pneumatic driving part 10; a movable part 20, which is driven by the pneumatic driving part 10 to actuate; The active part 20 is configured such that its actuation stroke covers the trigger stroke of the control component 30 of the load 40, so as to trigger the control component 30 of the load 40 by actuation; The load 40 is a load 40 that is subjected to EMC testing in the EMC testing area, and the pneumatic drive unit 10 is located outside the effective electromagnetic interference range of the EMC testing area.

[0029] In some embodiments, the load 40 may be an electronic load 40 in the vehicle with different load states, such as a vehicle air conditioner, a high-power vehicle charger, a window lift motor, a seat adjustment motor, a PTC heater, and a lighting assembly, etc. The control component 30 of the load 40 is a component used to adjust the load state of the load 40, such as a switch or control button for the load 40.

[0030] The pneumatic drive unit 10 is located outside the effective electromagnetic interference range of the EMC test area. For example, the EMC test area is an anechoic chamber where the load 40 is located, and the pneumatic drive unit 10 is located outside the anechoic chamber, such as in another space isolated from it. This facilitates operation of the pneumatic drive unit 10 by test personnel, avoids the risk of personnel exposure to high radiation fields, and reduces the electromagnetic interference that the pneumatic drive unit 10 may cause to the EMC test area.

[0031] In some embodiments, the pneumatic drive unit 10 may include an air pump 102, which may be a positive displacement pump, such as a diaphragm pump, piston pump, screw pump, or scroll pump, or a power pump or vortex pump, for drawing in external atmospheric pressure air, compressing the air to increase its pressure and density, and finally forcibly expelling it through the output end. The output end of the pneumatic drive unit 10 is connected to the movable unit 20 via a pipe 1001, providing a power source for the movable unit 20. The pipe 1001 may be a non-metallic pipe to reduce the impact on the electromagnetic purity of the EMC testing environment. The output end of the pneumatic drive unit 10 is connected to the movable part 20 via a pipe 1001. This connection can be direct or indirect, such as the output end of the pneumatic drive unit 10 being connected to one end of a valve assembly via pipe 1001, and the other end of the valve assembly being connected to the movable part 20 via pipe 1001. The valve assembly can be a solenoid valve 101, a pneumatic valve, or a manual valve, etc.

[0032] The movable part 20 may include a flexible pneumatic element, such as an airbag or a bellows, that is deformed by airflow. The movable part 20 is correspondingly arranged with the control component 30 of the load 40, and its actuation stroke covers the trigger stroke of the control component 30. For example, the movable part 20 includes a flexible pneumatic element, such as an airbag or a bellows, which is attached to the control component 30 of the load 40, such as a switch button or adjustment button of the load 40. When it is necessary to adjust the load state of the load 40 for EMC testing, the pneumatic drive unit 10 operates, inflating the flexible pneumatic element through the pipe 1001. The flexible pneumatic element inflates and deforms, pressing the control component 30 of the load 40, triggering the control component 30 of the load 40, and realizing the state adjustment of the load 40. When the inflation of the airbag or bellows stops, the flexible pneumatic element deflates and returns to its original shape by its own elasticity, releasing the trigger of the control component 30.

[0033] In some embodiments, the movable part 20 may include a pneumatic actuator driven by the pneumatic drive unit 10, the pneumatic actuator having a movable part 20 element driven by the pneumatic drive unit 10 to perform an actuation, the actuation stroke of the movable part 20 element covering the trigger stroke of the control component 30 of the load 40.

[0034] For example, the pneumatic actuator can be a cylinder, and the movable part 20 of the pneumatic actuator can be the piston rod of the cylinder. Alternatively, the pneumatic actuator can be a pneumatic muscle, and the movable part 20 of the pneumatic actuator can be a lever connected to the pneumatic muscle.

[0035] In one possible implementation, the pneumatic actuator can be a cylinder, and the moving part 20 of the pneumatic actuator can be the piston rod of the cylinder. The air inlet of the cylinder is connected to the output end of the pneumatic drive unit 10 via a pipe 1001, such as connecting to an air pump 102; the piston rod of the cylinder is correspondingly arranged with the control component 30 of the load 40, such as the piston rod of the cylinder facing the control component 30 of the load 40. The control component 30 of the load 40 is located within the actuation stroke of the piston rod, so that the control component 30 of the load 40 can be touched when the piston rod extends. The actual distance between the control component 30 and the piston rod can be set according to the actual situation. For example, if the control component 30 is a touch switch, the control component 30 can be located at the position that the piston rod can reach at its maximum actuation stroke. The end of the piston rod, that is, the end used to touch the control component 30 of the load 40, can also be provided with a soft contact, such as a silicone cap or a rubber pad, to prevent scratching the control component 30 and to provide cushioning.

[0036] When the load state of load 40 needs to be adjusted, the pneumatic drive unit 10 operates, and airflow enters the cylinder through the pipe 1001, pushing the piston rod to extend and triggering the control component 30 of load 40 to adjust the state of load 40; when the cylinder is stopped from being filled with air, the piston rod retracts, releasing the trigger on the control component 30.

[0037] As another possible implementation, the pneumatic actuator can be a pneumatic muscle, and the movable part 20 of the pneumatic actuator can be a lever connected to the pneumatic muscle. The air inlet of the pneumatic muscle is connected to the output of the pneumatic drive unit 10 via a pipe 1001, such as connecting to an air pump 102; the lever connected to the pneumatic muscle is correspondingly arranged with the control component 30 of the load 40, such that the other end of the pneumatic muscle is connected to one end of the lever, and the other end of the lever faces the control component 30 of the load 40. The control component 30 of the load 40 is located within the actuation stroke of the other end of the lever, so that the other end of the lever can touch the control component 30 of the load 40 when it actuates. The other end of the lever, that is, the end facing the control component 30 of the load 40, can also be provided with a soft contact, such as a silicone cap or a rubber pad, to prevent scratching the control component 30 and to provide cushioning.

[0038] When the load state of load 40 needs to be adjusted, the pneumatic drive unit 10 operates, and airflow inflates the pneumatic muscle through the pipe 1001. When the pneumatic muscle inflates and contracts, it pulls the lever, and the other end of the lever presses down, triggering the control component 30 of load 40 to adjust the state of load 40; when inflation of the pneumatic muscle stops, the pneumatic muscle recovers, pulls the lever again, and releases the trigger on the control component 30.

[0039] A load EMC test state control device is provided, including a pneumatic drive unit and a movable unit that is driven by the pneumatic drive unit to actuate. The movable unit is configured to have an actuation stroke that covers the trigger stroke of the control component of the load being tested in the EMC test area, thereby triggering the load control component through actuation. The pneumatic drive unit is located outside the effective electromagnetic interference range of the EMC test area. Thus, by actuating the movable unit through the pneumatic drive unit, the load control component is triggered to adjust the load state for EMC testing. This allows for load state adjustment using only airflow, eliminating the need for additional electronic components. Furthermore, the load state adjustment does not cause additional electromagnetic interference to the load's EMC test. Therefore, while enabling EMC testing of loads under different load states, the device reduces the impact on the electromagnetic purity of the EMC test environment, improving the accuracy of the load EMC test results.

[0040] To further improve the efficiency of EMC testing of loads, in some embodiments, such as Figure 2 As shown, the pneumatic drive unit 10 includes a solenoid valve 101 and an air pump 102; The solenoid valve 101 is used to control the on / off state and direction of the airflow generated by the air pump 102, so as to drive the movable part 20 to operate.

[0041] In some embodiments, the solenoid valve 101 may be a direct-acting solenoid valve 101, a pilot-operated solenoid valve 101, a step-by-step direct-acting solenoid valve 101, or a pneumatic solenoid valve 101, etc., that allows gas to flow.

[0042] In some embodiments, the output end of the air pump 102 is connected to the air inlet of the solenoid valve 101, and the air outlet of the solenoid valve 101 is connected to the movable part 20.

[0043] For example, the air pump 102 is connected to the air inlet of the solenoid valve 101 via the pipe 1001, and the air outlet of the solenoid valve 101 is connected to the movable part 20 via the pipe 1001, so that the movable part 20 is driven to operate by airflow. When it is necessary to adjust the load state of the load 40, the air pump 102 operates, and the solenoid valve 101 is turned on. At this time, the airflow drives the movable part 20 to operate through the pipe 1001, triggering the control component 30 of the load 40 to realize the state adjustment of the load 40. After the solenoid valve 101 is turned on for a period of time, the solenoid valve 101 can be controlled to close. For example, the solenoid valve 101 can be de-energized. At this time, the air is vented through the exhaust port of the solenoid valve 101, releasing the trigger on the control component 30 and releasing the control component 30. By repeating the above operations, the triggering and release of the control component 30 of the load 40 can be repeatedly controlled by opening and closing the solenoid valve 101, thereby achieving dynamic adjustment of the load state. This eliminates the need to repeatedly adjust the operating state of the air pump 102, enabling EMC testing of the load 40 under different load states and improving the efficiency of load EMC testing. Simultaneously, it increases the success rate of EMC testing of the load 40 under different load states, thus enhancing the reliability of load EMC testing.

[0044] In some embodiments, such as Figure 3 As shown, the device also includes a control unit 50; The control unit 50 is used to output pulse signals to the solenoid valve 101 at preset time intervals to control the solenoid valve 101 to be turned on.

[0045] The control unit 50 can be a controller, such as a motion controller, PLC controller, or microcontroller, which can process and judge according to predetermined rules and output control signals to direct the equipment to perform specific operations. The preset time interval can be set according to actual conditions, such as the EMC test duration required for the load 40 under any load state. The pulse width of the pulse signal can be set according to actual conditions, such as the minimum pulse width required to open the solenoid valve 101.

[0046] In some embodiments, the control unit 50 is electrically connected to the solenoid valve to adjust the operating state of the solenoid valve. For example, the control unit can control the solenoid valve to start or stop, such as by supplying power to the solenoid valve to start it, or by de-energizing the solenoid valve to stop it.

[0047] In some embodiments, the control unit 50 may also be electrically connected to the air pump 102 to control the air pump 102 to start when an EMC test is required on the load 40.

[0048] The control unit 50, solenoid valve 101, and air pump 102 can be installed in a soundproof space to reduce the noise of the control unit 50 and relay during operation.

[0049] When EMC testing is performed on load 40, the control air pump 102 is started. Simultaneously, the control unit 50, at preset time intervals, outputs pulse signals to the solenoid valve 101, controlling its activation and opening. Airflow then drives the movable part 20 through the pipe 1001, triggering the control component 30 of load 40 to adjust its state. During the intervals between pulse signals (i.e., the preset time intervals), the control unit 50 does not output pulse signals to the solenoid valve 101, keeping it de-energized. Air is then expelled through the solenoid valve 101's exhaust port, releasing the trigger on the control component 30. This allows for dynamic adjustment of the load state of load 40 based on preset time intervals, highly simulating the dynamic changes of load 40 in a real vehicle. It also enables uninterrupted automated testing, shortening product development and verification cycles and improving the efficiency of load EMC testing.

[0050] To further improve the reliability of load EMC testing, in some embodiments, the preset time interval can be determined based on the response time of the control component 30.

[0051] The response time of the control component 30 refers to the total time required from the opening of the solenoid valve 101 to the adjustment of the load state of the load 40 by the control component 30. The preset time interval can be greater than or equal to the response time of the control component 30. For example, assuming the response time of the control component 30 is 10ms, the control unit 50 outputs a pulse signal to the solenoid valve 101 at least every 10ms to control the solenoid valve 101 to conduct. This is to avoid the situation where the control component 30 receives the next load state adjustment operation before completing the previous load state adjustment, and cannot keep up with the frequency of the instructions, resulting in a complete disconnect between its physical state and the control intention, thereby improving the reliability of the load EMC test.

[0052] To further improve the reliability of load EMC testing, in some embodiments, the control unit 50 is specifically used for: The initial time interval is determined based on the response time of the control component 30; The preset time interval is determined based on the maximum EMC test duration required for the load 40 under various load conditions and the initial time interval; At each preset time interval, a pulse signal is output to the solenoid valve 101 to control the solenoid valve 101 to be turned on.

[0053] For example, the control unit 50 can first obtain the response time of the control component 30 and use this response time as the initial time interval. At the same time, it can obtain the pre-recorded EMC test duration required by the load 40 under each load state, such as by reading the EMC test requirement recording log to obtain the EMC test duration required by the load 40 under each load state, for example, the EMC test duration required by the load 40 in the start state, or the EMC test duration required by the load 40 in the off state, or the EMC test duration required by the load 40 at each gear position.

[0054] After obtaining the required EMC test duration for load 40 under various load conditions, the maximum EMC test duration among all EMC test durations, plus the initial time interval, is added to obtain the total duration, which is then determined as a preset time interval. At each of these preset time intervals, a pulse signal is output to solenoid valve 101 to control its opening and conduction. This ensures that during load EMC testing, the EMC test duration for load 40 under any load condition meets the testing requirements for that load condition, improving the reliability of load EMC testing.

[0055] To further improve the reliability of load EMC testing, in some embodiments, the control unit 50 is also used for: According to the trigger pressure required by the control component 30, when the solenoid valve 101 opens the pipe 1001 between the air pump 102 and the movable part 20, the air pressure output to the movable part 20 is adjusted.

[0056] In some embodiments, the trigger pressure required for the control component 30 refers to the pressure required to trigger the control component 30.

[0057] When the actuator 20 needs to be activated to trigger the control component 30, the control unit 50 can obtain the actuating force of the actuator 20 based on the triggering pressure of the control component 30, and determine the target air pressure to be output to the actuator 20 through pressure calculation.

[0058] After determining the target air pressure to be output to the moving part 20, the air pump 102 can be controlled to operate in normal mode. Based on this target air pressure, the conduction of the solenoid valve 101 can be adjusted, for example, by adjusting the magnitude of the pulse signal. This ensures that when the solenoid valve 101 opens the pipe 1001 between the air pump 102 and the moving part 20, the air pressure output to the moving part 20 is the target air pressure. Alternatively, the solenoid valve 101 can be fully opened, and the operating power of the air pump 102 can be adjusted based on the target air pressure to regulate the airflow pressure output by the air pump 102. This ensures that when the solenoid valve 101 opens the pipe 1001 between the air pump 102 and the moving part 20, the air pressure output to the moving part 20 is the target air pressure. This allows for stable triggering of the control component 30 to adjust the state of the load 40 while reducing the possibility of damage to the control component 30 due to excessive triggering force from the moving part 20, thereby further improving the reliability of the load EMC test.

[0059] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below. In some embodiments, such as Figure 3 As shown, the EMC test status control device for the load includes: a pneumatic drive unit 10, an actuating unit 20 driven by the pneumatic drive unit 10, and a control unit 50; the actuating unit 20 is configured such that its actuation stroke covers the trigger stroke of the control unit 30 of the load 40, so as to trigger the control unit 30 of the load 40 by actuation; wherein, the load 40 is a load 40 undergoing EMC testing in an EMC test area, and the pneumatic drive unit 10 is located outside the effective electromagnetic interference range of the EMC test area.

[0060] The movable part 20 includes a pneumatic actuator driven by the pneumatic drive unit 10. The pneumatic actuator has a movable part 20 that is driven by the pneumatic drive unit 10 to perform an operation. The actuation stroke of the movable part 20 covers the trigger stroke of the control unit 30 of the load 40.

[0061] The pneumatic drive unit 10 includes a solenoid valve 101 and an air pump 102. The output end of the air pump 102 is connected to the air inlet of the solenoid valve 101, and the air outlet of the solenoid valve 101 is connected to the movable part 20.

[0062] The control unit 50 is used to output pulse signals to the solenoid valve 101 at preset time intervals to control the solenoid valve 101 to be turned on. The preset time interval is determined based on at least one of the response time of the control component 30 or the maximum EMC test duration required by the load 40 under various load conditions.

[0063] The control unit 50 is also used to: adjust the air pressure output to the movable part 20 when the solenoid valve 101 opens the pipe 1001 between the air pump 102 and the movable part 20 according to the trigger pressure required by the control component 30.

[0064] Figure 4 A flowchart illustrating a control method for a load EMC test status control device according to an embodiment of this application is shown. This control method for the load EMC test status control device is applied to the load EMC test status control device in any of the above embodiments; specifically, it can be applied to the control unit in any of the above embodiments.

[0065] In some embodiments, the control method of the load's EMC test state control device includes: S101, at preset time intervals, output pulse signals to the solenoid valve to control the solenoid valve to open.

[0066] The control device for the aging test circuit provided in this application is described below. The control device for the aging test circuit described below can be referred to in correspondence with the control method for the aging test circuit described above.

[0067] In one embodiment, such as Figure 5 As shown, a control device for a load EMC test status control equipment is provided, comprising: The control module 210 is used to output pulse signals to the solenoid valve at preset time intervals to control the solenoid valve to turn on.

[0068] on the other hand, Figure 6 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 6 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 can call a computer program in the memory 830 to execute a control method for the load EMC test state control device, such as including: At preset time intervals, a pulse signal is output to the solenoid valve to control the solenoid valve to open.

[0069] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0070] On the other hand, embodiments of this application also provide a storage medium, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the control method of the load EMC test state control device provided in the above embodiments, for example including: At preset time intervals, a pulse signal is output to the solenoid valve to control the solenoid valve to open.

[0071] On the other hand, this application also provides a load EMC testing system, including a load, a load control component, and the load EMC testing status control device provided in the above embodiments.

[0072] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0073] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A load EMC test status control device, characterized in that, include: Pneumatic drive unit; The movable part is driven by the pneumatic drive unit to operate; The active part is configured such that its actuation stroke covers the trigger stroke of the load's control component, so as to trigger the load's control component by actuation; The load is a load undergoing EMC testing in the EMC testing area, and the pneumatic drive unit is located outside the effective electromagnetic interference range of the EMC testing area.

2. The load EMC test status control device according to claim 1, characterized in that, The movable part includes a pneumatic actuator driven by the pneumatic drive unit. The pneumatic actuator has a movable component that is driven by the pneumatic drive unit to perform an actuation. The actuation stroke of the movable component covers the trigger stroke of the control component of the load.

3. The load EMC test status control device according to claim 1 or 2, characterized in that, The pneumatic drive unit includes a solenoid valve and an air pump; The solenoid valve is used to control the on / off state and direction of the airflow generated by the air pump, so as to drive the moving part to operate.

4. The load EMC test status control device according to claim 3, characterized in that, The output end of the air pump is connected to the air inlet of the solenoid valve, and the air outlet of the solenoid valve is connected to the movable part.

5. The load EMC test status control device according to claim 3, characterized in that, It also includes a control unit; The control unit is used to output pulse signals to the solenoid valve at preset time intervals to control the solenoid valve to open.

6. The load EMC test status control device according to claim 4, characterized in that, The preset time interval is determined based on the response time of the control component.

7. The load EMC test status control device according to claim 4, characterized in that, The control unit is specifically used for: The initial time interval is determined based on the response time of the control component; The preset time interval is determined based on the maximum EMC test duration required for the load under each load condition and the initial time interval; At each preset time interval, a pulse signal is output to the solenoid valve to control the solenoid valve to open.

8. The load EMC test status control device according to claim 4, characterized in that, The control unit is also used for: According to the trigger pressure required by the control component, when the solenoid valve is adjusted to open the pipeline between the air pump and the moving part, the air pressure output to the moving part is adjusted.

9. A control method for a load EMC test state control device, characterized in that, Applied to the control unit as described in any one of claims 4-8, the method comprises: At preset time intervals, a pulse signal is output to the solenoid valve to control the solenoid valve to open.

10. A control device for a load EMC test status control equipment, characterized in that, Applied to the control unit as described in any one of claims 4-8, the device comprises: The control module is used to output pulse signals to the solenoid valve at preset time intervals to control the solenoid valve to open.

11. An electronic device, characterized in that, It includes a processor and a memory storing a computer program, characterized in that the processor executes the computer program to implement the method of claim 9.

12. A load-based EMC testing system, characterized in that, It includes a load, a load control component, and an EMC test status control device for the load as described in any one of claims 1-8.

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