Electromagnetic Compatibility Test Device for Automotive Starting Function

Abstract

This utility model discloses an electromagnetic compatibility (EMC) testing device for automotive starting function, relating to the field of automotive whole-vehicle EMC testing technology. It includes a contact head, a cylinder, an angle adjustment unit, a spatial position adjustment unit, a reversing valve, and an air supply unit. The contact head is used to contact the automotive start button. The cylinder includes a cylinder body and a piston rod. The end of the piston rod is connected to the contact head. The spatial position adjustment unit and the angle adjustment unit are used to adjust the spatial position and direction of the contact head, respectively, so that it can be aligned with the automotive start button. The reversing valve connects to the two inner chambers of the cylinder through two branches to control the cylinder's movement. The air supply unit connects to the reversing valve to supply air to it. This utility model designs three button control methods. Compared with the prior art, this automotive starting function EMC testing device has strong versatility and anti-interference capabilities, and can be flexibly applied to radiation immunity testing of automotive starting function according to vehicle testing requirements.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic compatibility testing technology for automobiles, and in particular to an electromagnetic compatibility testing device for automobile starting function. Background Technology

[0002] As a mobile electronic device, automobiles have very high requirements for electromagnetic compatibility. The national standard "GB 34660-2017 Road Vehicles Electromagnetic Compatibility Requirements and Test Methods" and the international standard "ECE R10.06-2019" stipulate the electromagnetic compatibility tests that need to be performed on the whole vehicle. Among them, the vehicle radiated immunity test is a very important test in the electromagnetic compatibility test of the whole vehicle.

[0003] Radiated immunity testing involves applying electromagnetic interference to a vehicle while it is operating normally to test whether its functions function properly under such interference. For example, it checks whether the vehicle's driving status, windshield wipers, turn signals, and air conditioning functions correctly under electromagnetic interference. In recent years, most car starting methods have changed from keyless entry to push-button start. Generally, with the brake pedal depressed, pressing or holding the start button for 3 seconds will start the vehicle; pressing the start button while the engine is running will turn it off.

[0004] In actual automotive radiated immunity testing, strong electromagnetic field interference needs to be applied to the vehicle under test. The national standard "GB34660-2017" requires a field strength of 30V / m. Some automotive manufacturers' standards require even higher field strengths, such as 75V / m or 100V / m. Under such strong electromagnetic field interference, when conducting electromagnetic interference tests on the vehicle's start-stop function, a person cannot start or stop the vehicle from inside the vehicle. An auxiliary device must be used to perform the starting and stopping operations on behalf of the operator, and this device must also be capable of resisting strong electromagnetic field interference. Utility Model Content

[0005] The purpose of this invention is to provide an electromagnetic compatibility testing device for automobile starting function, so as to perform electromagnetic compatibility testing of automobile starting function under strong electromagnetic field interference.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model discloses an electromagnetic compatibility testing device for automobile starting function, comprising:

[0008] Contact head, used to contact the car start button;

[0009] A cylinder, including a cylinder body and a piston rod; the end of the piston rod is connected to the contact head to drive the contact head to press and release the car start button;

[0010] An angle adjustment unit is used to adjust the angle of the cylinder, including a fixing clamp and a universal joint; the fixing clamp is fixedly connected to the first end of the universal joint and the cylinder body; the angle of the universal joint can be locked.

[0011] A spatial position adjustment unit is fixedly connected to the second end of the universal joint to adjust the spatial position of the universal joint;

[0012] A reversing valve connects to the two inner chambers of the cylinder through two branch lines to control the movement of the cylinder;

[0013] An air supply unit is connected to the reversing valve to supply air to the reversing valve.

[0014] Preferably, the spatial position adjustment unit includes a base, a column, a rotating sleeve, an inner slide rod, a knob one, and a knob two; the base is used to be placed in the passenger seat, and the column is fixedly connected to the base; the column passes vertically through the rotating sleeve so that the rotating sleeve can rotate around the column; the inner slide rod is slidably installed inside the rotating sleeve to slide along the axial direction of the rotating sleeve; the knob one is used to lock the column to the rotating sleeve, and the knob two is used to lock the rotating sleeve to the inner slide rod; the inner slide rod is fixedly connected to the second end of the universal joint.

[0015] Preferably, the spatial position adjustment unit further includes a handle, which is fixedly connected to the base.

[0016] Preferably, the electromagnetic compatibility test device for the vehicle starting function further includes two speed control valves; one speed control valve is provided on each of the two branches connecting the reversing valve and the two inner cavities, so as to adjust the speed at which the contact head is pressed and released from the vehicle starting button.

[0017] Preferably, the reversing valve is a pneumatic reversing valve.

[0018] Preferably, the reversing valve is a manual reversing valve with a reversing control switch.

[0019] Preferably, the reversing valve is a solenoid valve and is connected to a timing control unit.

[0020] Preferably, the vent of the reversing valve is fixedly connected to a silencer.

[0021] Preferably, the electromagnetic compatibility test device for vehicle starting function further includes a semi-anechoic chamber and an electromagnetic wave generating unit; the electromagnetic wave generating unit is used to emit electromagnetic waves in the semi-anechoic chamber.

[0022] Preferably, the electromagnetic wave generating unit includes a signal source, a power amplifier, a coupler, and an antenna connected in sequence, and also includes a power meter for monitoring forward power and reverse power.

[0023] This utility model achieves the following technical advantages compared to related technologies:

[0024] The mechanical structure of this auxiliary device for testing the radiated immunity of automotive push-button switches is flexibly adjustable, allowing the contacts to be aligned with push-button switches of different car models, thus offering strong versatility. Furthermore, this auxiliary device combines a reversing valve and a cylinder, using pneumatic control to achieve automatic button presses at regular intervals, manual button presses at any time, or button presses executed according to a user-defined sequence. These three button press methods can present various vehicle test states and can be flexibly applied to the radiated immunity testing of the vehicle's start-stop function according to different testing needs. This device does not use electronic components, has strong electromagnetic interference resistance, and can be used for automotive radiated immunity testing, meaning it can perform the operation of starting and stopping the vehicle even under electromagnetic interference. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an electromagnetic compatibility test device for automobile starting function according to an embodiment of this utility model (the reversing valve is a pneumatic reversing valve);

[0027] Figure 2 This is another schematic diagram of the electromagnetic compatibility test device for automobile starting function according to an embodiment of this utility model (the reversing valve is a manual reversing valve);

[0028] Figure 3 This is another schematic diagram of the electromagnetic compatibility test device for automobile starting function according to an embodiment of this utility model (the reversing valve is a solenoid valve);

[0029] Figure 4 for Figure 1 Partial structural diagram;

[0030] Figure 5 for Figure 2 A partial structural diagram.

[0031] Figure 6 for Figure 3 A partial structural diagram.

[0032] In the diagram: 1-Base; 2-Handle; 3-Column; 4-Rotating sleeve; 5-Inner slide rod; 6-Knob 1; 7-Knob 2; 8-Universal joint; 9-Fixing clamp; 10-Speed ​​control valve; 11-Cylinder; 12-Contact head; 13-Reversing valve; 14-Muffler; 15-Reversing control switch; 16-Semi-anechoic chamber; 17-Signal source; 18-Power amplifier; 19-Coupled; 20-Antenna; 21-Power meter; 22-Test vehicle; 23-Air supply unit; 24-Timing control unit; 25-Solenoid valve power cord. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The purpose of this invention is to provide an electromagnetic compatibility testing device for automobile starting function, so as to perform automobile starting function testing under strong electromagnetic field interference.

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figures 1-6 This embodiment provides an electromagnetic compatibility test device for automotive starting function, including a contact head 12, a cylinder 11, an angle adjustment unit, a spatial position adjustment unit, a reversing valve 13, an air supply unit 23, and a timing control unit 24.

[0037] Contact head 12 is used to contact the car start button. Cylinder 11 includes a cylinder body and a piston rod. The end of the piston rod is connected to contact head 12 to drive contact head 12 to press and release the car start button. An angle adjustment unit is used to adjust the angle of cylinder 11 and includes a fixing clamp 9 and a universal joint 8. The fixing clamp 9 is fixedly connected to the first end of universal joint 8 and the cylinder body. The angle of universal joint 8 can be locked. A spatial position adjustment unit is fixedly connected to the second end of universal joint 8 to adjust the spatial position of universal joint 8. A reversing valve 13 is connected to the two internal chambers of cylinder 11 through two branches to control the movement of cylinder 11. An air supply unit 23 is connected to reversing valve 13 to supply air to reversing valve 13.

[0038] The working principle of the electromagnetic compatibility testing device for automotive starting function in this embodiment is as follows:

[0039] The angle adjustment unit can adjust the angle of cylinder 11, and the spatial position adjustment unit can adjust the position of cylinder 11. Used together, these two units allow for adjustment of the position and orientation of cylinder 11 to meet the testing requirements of different types of vehicles. When the piston rod of cylinder 11 extends, the drive contact head 12 presses the vehicle start button; when the piston rod retracts, the drive contact head 12 disengages from the vehicle start button, thus simulating the driver's actions of starting and stopping the vehicle. Cylinder 11 is driven by airflow, not by an electric motor, which avoids electromagnetic interference to the electronic circuits, providing strong anti-electromagnetic interference capabilities and meeting testing requirements.

[0040] Therefore, this electromagnetic compatibility testing device for vehicle starting function can perform vehicle starting function tests under strong electromagnetic field interference.

[0041] For example, the inner ball of the universal joint 8 is locked and positioned with the outer ball sleeve by a locking bolt. The locking bolt is threadedly connected to the outer ball sleeve, and the end of the locking bolt abuts against the inner ball.

[0042] As a possible example, in this embodiment, the spatial position adjustment unit includes a base 1, a column 3, a rotating sleeve 4, an inner slide rod 5, a first knob 6, and a second knob 7. The base 1 is placed in the passenger seat, and the column 3 is fixedly connected to the base 1. The column 3 passes vertically through the rotating sleeve 4, allowing the rotating sleeve 4 to rotate around the column 3. The inner slide rod 5 is slidably mounted inside the rotating sleeve 4 to slide along the axial direction of the rotating sleeve 4. The first knob 6 is used to lock the column 3 to the rotating sleeve 4, and the second knob 7 is used to lock the rotating sleeve 4 to the inner slide rod 5. The inner slide rod 5 is fixedly connected to the second end of the universal joint 8.

[0043] In use, the base 1 is placed on the passenger seat. The rotating sleeve 4 slides up and down along the column 3 to achieve height positioning of the second end of the universal joint 8. The rotating sleeve 4 rotates around the column 3 to achieve circumferential positioning of the second end of the universal joint 8. The inner slide rod 5 slides along the axial direction of the rotating sleeve 4 to achieve radial positioning of the second end of the universal joint 8. Combining the above height positioning, circumferential positioning, and radial positioning achieves spatial positioning of the second end of the universal joint 8.

[0044] After the spatial position adjustment unit is adjusted, the operator leaves the vehicle and performs the subsequent test steps, namely, controlling the action of the contact head 12 through the reversing valve 13.

[0045] For example, knob 6 and knob 7 have external threads. Knob 6 is threadedly connected to the rotating sleeve 4, and its end abuts against the side of the column 3 to lock the column 3 and the rotating sleeve 4. Knob 7 is threadedly connected to the rotating sleeve 4, and its end abuts against the side of the inner slide rod 5 to lock the rotating sleeve 4 and the inner slide rod 5.

[0046] It is understandable that the spatial position adjustment unit can also be of other types, as long as it can adjust the spatial position of the second end of the universal joint 8 and is not affected by electromagnetic interference.

[0047] As one possible example, in this embodiment, the spatial position adjustment unit further includes a handle 2, which is fixedly connected to the base 1. The handle 2 is for the operator to grip, so as to facilitate the movement of the spatial position adjustment unit.

[0048] As a possible example, in this embodiment, the electromagnetic compatibility test device for the vehicle starting function also includes two speed control valves 10. A speed control valve 10 is provided on each of the two branches connecting the reversing valve 13 and the two internal cavities to adjust the speed at which the contact head 12 is pressed and released from the vehicle starting button, respectively.

[0049] By setting the speed control valve 10, the airflow speed of the two branches is controlled, thereby controlling the moving speed of the contact head 12 and preventing the contact head 12 from moving too fast and causing damage to the car start button.

[0050] As a possible example, refer to Figure 1 , Figure 4 The reversing valve 13 is a pneumatic reversing valve that can achieve automatic reversing.

[0051] For example, the pneumatic directional valve here can be a two-position five-way pilot-operated pneumatic directional valve.

[0052] As a possible example, refer to Figure 2 , Figure 5 The reversing valve 13 is a manual reversing valve and is connected to a reversing control switch 15, which can be controlled by the operator at any time.

[0053] Understandably, the reversing control switch 15 should be placed outside the semi-anechoic chamber 16 used for testing the vehicle to facilitate operation by the operator.

[0054] As a possible example, refer to Figure 3 , Figure 6 The reversing valve 13 is a solenoid valve, which is connected to the timing control unit 24 through the solenoid valve power line 25. Users can design custom timing control of the solenoid valve's on / off state in the timing control unit 24, thereby realizing custom control of the button time interval.

[0055] As a possible example, in this embodiment, the vent of the reversing valve 13 is fixedly connected to the silencer 14 to reduce the noise generated during the venting process.

[0056] As a possible example, in this embodiment, the electromagnetic compatibility test apparatus for automotive starting function further includes a semi-anechoic chamber 16 and an electromagnetic wave generating unit. The electromagnetic wave generating unit is used to emit electromagnetic waves within the semi-anechoic chamber 16.

[0057] The semi-anechoic chamber 16, also known as an electromagnetic compatibility anechoic chamber, is based on an electromagnetic shielding chamber. Electromagnetic wave absorbing materials are applied to the four inner walls and ceiling, and the floor serves as an ideal reflective surface, thus simulating the testing conditions of an open area. The vehicle to be tested is placed inside the semi-anechoic chamber 16 for testing.

[0058] As a possible example, in this embodiment, the electromagnetic wave generating unit includes a signal source 17, a power amplifier 18, a coupler 19, and an antenna 20 connected in sequence.

[0059] The signal generated by signal source 17 is amplified by power amplifier 18 and coupler 19, and then emitted by antenna 20, so that electromagnetic waves cover the area where the vehicle is located.

[0060] As a possible example, in this embodiment, the electromagnetic wave generating unit also includes a power meter 21, which is used to monitor the forward power and reverse power to ensure that the forward power reaching the antenna port and the system voltage standing wave ratio meet the test requirements.

[0061] The method of using this electromagnetic compatibility testing device for automotive starting function is as follows:

[0062] Step 1: Coarse adjustment.

[0063] Place base 1 on the passenger seat. Based on the location of the car start button, turn knob 6 to adjust the height of rotating sleeve 4 and inner slide rod 5, as well as the pointing angle of rotating sleeve 4, so that rotating sleeve 4 is roughly facing the start button. Tighten knob 6 to lock rotating sleeve 4. Slide the inner slide rod 5 to bring cylinder 11 and contact head 12 close to the car start button.

[0064] Step 2: Fine-tuning.

[0065] Adjust the universal joint 8 so that the contact head 12 aligns with the car start button, with the extension and retraction direction of the contact head 12 as perpendicular as possible to the car start button. Tighten the locking bolt to lock the inner ball and outer ball sleeve of the universal joint 8 into place. The first two steps need to be adjusted together to finally align the contact head 12 with the car start button.

[0066] Step 3: Adjust the pressing interval and pressing speed.

[0067] If the reversing valve 13 is a two-position five-way pneumatic reversing valve, the pressing time interval can be controlled by adjusting the knobs on the left and right sides of the muffler 14.

[0068] If the reversing valve 13 is a manual reversing valve, the operator can manually control the pressing time interval through the reversing control switch 15. The reversing control switch 15 is placed in the operating room outside the semi-anechoic chamber 16, and the operator can control the device to perform the button pressing or retraction actions at any time, which can be flexibly applied in radiation immunity tests.

[0069] If the reversing valve 13 is a solenoid valve, the operator can use the timing control unit 24 to give a custom key interval sequence to control the key interval. It can be flexibly applied to radiation immunity tests according to different test requirements of users.

[0070] Then, the speed of pressing and retracting of the contact head 12 is adjusted by adjusting the speed control valve 10.

[0071] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electromagnetic compatibility testing device for automotive starting function, characterized in that, include: Contact head, used to contact the car start button; A cylinder, including a cylinder body and a piston rod; the end of the piston rod is connected to the contact head to drive the contact head to press and release the car start button; An angle adjustment unit is used to adjust the angle of the cylinder, including a fixing clamp and a universal joint; the fixing clamp is fixedly connected to the first end of the universal joint and the cylinder body; the angle of the universal joint can be locked. A spatial position adjustment unit is fixedly connected to the second end of the universal joint to adjust the spatial position of the universal joint; A reversing valve connects to the two inner chambers of the cylinder through two branch lines to control the movement of the cylinder; An air supply unit is connected to the reversing valve to supply air to the reversing valve.

2. The apparatus for EMC test of automotive start function according to claim 1, characterized in that: The spatial position adjustment unit includes a base, a column, a rotating sleeve, an inner slide rod, a knob one, and a knob two. The base is placed in the passenger seat, and the column is fixedly connected to the base. The column passes vertically through the rotating sleeve, allowing the rotating sleeve to rotate around the column. The inner slide rod is slidably installed inside the rotating sleeve to slide along the axial direction of the rotating sleeve. Knob one is used to lock the column to the rotating sleeve, and knob two is used to lock the rotating sleeve to the inner slide rod. The inner slide rod is fixedly connected to the second end of the universal joint.

3. The apparatus for testing electromagnetic compatibility of automotive start function according to claim 2, characterized in that: The spatial position adjustment unit also includes a handle, which is fixedly connected to the base.

4. The apparatus for testing electromagnetic compatibility of automotive start function according to claim 1, characterized in that: It also includes two speed control valves; one speed control valve is provided on each of the two branches connecting the reversing valve and the two inner cavities, so as to adjust the speed at which the contact head is pressed and released from the car start button.

5. The apparatus for EMC test of automotive start function according to claim 1, characterized in that: The reversing valve is a pneumatic reversing valve.

6. The apparatus for EMC test of automotive start function according to claim 1, characterized in that: The reversing valve is a manual reversing valve and is connected to a reversing control switch.

7. The apparatus for testing electromagnetic compatibility of automotive start function according to claim 1, characterized in that: The reversing valve is a solenoid valve and is connected to a timing control unit.

8. The apparatus for EMC test of automotive start function according to claim 1, characterized in that: The vent of the reversing valve is fixedly connected to a silencer.

9. The apparatus for EMC test of automotive start function according to claim 1, characterized in that: It also includes a semi-anechoic chamber and an electromagnetic wave generating unit; the electromagnetic wave generating unit is used to emit electromagnetic waves in the semi-anechoic chamber.

10. The electromagnetic compatibility testing device for automobile starting function according to claim 9, characterized in that: The electromagnetic wave generating unit includes a signal source, a power amplifier, a coupler, and an antenna connected in sequence, and also includes a power meter used to monitor forward power and reverse power.

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