Water inlet test equipment for vehicle-mounted sensor

Abstract

The invention discloses vehicle-mounted sensor water inlet test equipment, and relates to the technical field of test equipment. The device comprises an operation rack, a water tank, a vibration device, a clamping device and a regulation and control device. Wherein the water tank is assembled on the operation rack; the vibration device is used for simulating multi-dimensional vibration; one end of the clamping device is used for clamping a vehicle-mounted sensor and extends into the water tank, and the other end of the clamping device is connected with the output end of the vibration device; one end of the regulation and control device is communicated with one side of the water tank, and the other end of the regulation and control device is communicated with the other side of the water tank, so that water circularly flows between the water tank and the regulation and control device; and the regulation and control device is used for regulating the water temperature and the flow velocity of water. By adopting the technical scheme, the device has the advantages of being capable of accurately simulating various complex water inlet environments, simple in structural design and easy to maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a water ingress testing device for a vehicle-mounted sensor. Background Art

[0002] On-board sensors refer to various sensor devices installed inside and outside the car, which are used to collect information about the vehicle status, environment, driver behavior, etc. In the daily use of the vehicle, it is inevitable to encounter other water ingress situations such as wading and immersion. The waterproof performance of the sensor directly affects its reliability and service life. Therefore, it is necessary to conduct a water ingress test on the on-board sensors to detect whether their performance is affected after contact with water or immersion. The existing technology often uses rain test equipment and immersion test equipment to simulate the water ingress of on-board sensors, but these two types have the problem of limitations in simulating the water ingress environment. They cannot truly simulate the complex situations such as vibration and water shock encountered by the on-board sensors during actual vehicle driving, and they are difficult to maintain. Summary of the invention

[0003] The purpose of the present invention is to provide a vehicle-mounted sensor water ingress testing equipment in view of the defects and shortcomings of the prior art, which has the advantages of being able to accurately simulate a variety of complex water ingress environments, having a simple structural design and being easy to maintain.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a vehicle-mounted sensor water ingress testing device, comprising:

[0005] Operating table;

[0006] A water tank, mounted on the operating platform;

[0007] A vibration device, the vibration device is used to simulate multi-dimensional vibration;

[0008] A clamping device, one end of which is used to clamp the vehicle-mounted sensor and extends into the water tank, and the other end of which is connected to the output end of the vibration device; and

[0009] A regulating device, one end of which is connected to one side of the water tank, and the other end of which is connected to the other side of the water tank, so as to realize the circulation of water between the water tank and the regulating device; the regulating device is used to adjust the water temperature and the water flow rate.

[0010] The present invention is further provided that the clamping device includes: a connecting plate, a first bracket whose upper end is connected to the bottom surface of the connecting plate and whose lower end is connected to the output end of the vibration device, a second bracket whose upper end is connected to the bottom surface of the connecting plate and whose lower end extends into the water tank, a first clamping plate assembled at the lower end of the second clamping plate, a second clamping plate and an adjusting member whose one end is connected to the first clamping plate and the other end is connected to the second clamping plate; the adjusting member is used to adjust the distance between the first clamping plate and the second clamping plate; the first clamping plate, the second clamping plate and the adjusting member cooperate to clamp the vehicle-mounted sensor.

[0011] The present invention further provides that the vehicle-mounted sensor water ingress testing equipment also includes: a liquid level switch arranged in the water tank; and the liquid level switch is electrically connected to the regulating device.

[0012] The present invention is further arranged that the vibration device also includes: a vibration table body, an exciter rotatably mounted at one end on one side of the vibration table body, a horizontal slide movably mounted on the other side of the vibration table body, and a vertical slide detachably mounted on the output end of the exciter; the vibration table body, the horizontal slide, the vertical slide and the exciter cooperate to realize multi-dimensional vibration simulation of the vehicle-mounted sensor.

[0013] The present invention further provides that the vehicle-mounted sensor water ingress testing equipment also includes: a monitoring device for monitoring the output signal of the vehicle-mounted sensor; the monitoring device is electrically connected to the vehicle-mounted sensor.

[0014] The present invention further provides that the vehicle-mounted sensor water ingress testing equipment also includes: a control device, and the control device is electrically connected to the regulating device.

[0015] The present invention further provides that the operating table frame comprises: an operating table body and an operating frame body whose one end is detachably connected to the peripheral side of the operating table body; one or more operating frames are provided.

[0016] The present invention is further provided that a hollow structure is provided on the operating table body.

[0017] The present invention further provides that the water tank is provided with a transparent structure.

[0018] The present invention further provides that the regulating device is configured as an air-cooled integrated heating and cooling machine.

[0019] After adopting the above technical scheme, the beneficial effects of the present invention are as follows: in the present invention, one end of the clamping device clamps the vehicle-mounted sensor and extends into the water tank, and the other end is connected to the output end of the vibration device, and the vibration device is used to simulate multi-dimensional vibration. By starting the vibration device, the situation of water entering the vehicle-mounted sensor under vibrations of different directions and different strengths can be simulated, and the situation of the vehicle-mounted sensor being impacted by water flows of different directions and different strengths during the driving of the vehicle can be accurately simulated, so as to evaluate the performance of the vehicle-mounted sensor under dynamic water flow impact conditions. The water temperature and the flow rate of the water flow are controlled by the regulating device to accurately simulate the water temperature and the flow rate of the water flow in different environments. The operator controls the water depth of the vehicle-mounted sensor by controlling the amount of water added to the water tank. One end of the regulating device is connected to one side of the water tank, and the other end is connected to the other side of the water tank to realize the circulation of water between the water tank and the regulating device. The overall structural design of the present invention is simple, maintenance is convenient, and maintenance costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the operation platform and the clamping device clamping the vehicle-mounted sensor and the vertical slide of the vibration device;

[0023] Figure 3 It is a structural schematic diagram of the clamping device clamping the vehicle-mounted sensor and the horizontal slide table of the vibration device;

[0024] Figure 4 is a schematic diagram of the structure of the clamping device clamping the vehicle-mounted sensor;

[0025] Figure 5 It is a schematic diagram of the structure explosion of the clamping device clamping the vehicle-mounted sensor, the liquid level switch and the water tank;

[0026] Figure 6 It is a schematic diagram of the structure of the vibration device simulating vertical vibration;

[0027] Figure 7 It is a schematic diagram of the structure of the vibration device simulating horizontal vibration;

[0028] Figure 8 It is a structural diagram of the control device.

[0029] Explanation of the reference numerals: 100, operating table frame; 110, operating table body; 120, operating frame; 200, water tank; 300, vibration device; 310, vibration table body; 320, exciter; 330, vertical slide; 340, horizontal slide; 400, clamping device; 410, connecting plate; 420, first bracket; 430, second bracket; 440, first clamping plate; 450, second clamping plate; 460, adjusting member; 500, vehicle-mounted sensor; 600, regulating device; 700, liquid level switch; 800, control device. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0032] This embodiment relates to a vehicle-mounted sensor water ingress testing device, referring to Figure 1, including: an operating stand 100, a water tank 200, a vibration device 300, a clamping device 400 and a regulating device 600. The water tank 200 is mounted on the operating stand 100; the vibration device 300 is used to simulate multi-dimensional vibration; one end of the clamping device 400 is used to clamp the vehicle-mounted sensor 500 and extend into the water tank 200, and the other end is connected to the output end of the vibration device 300; one end of the regulating device 600 is connected to one side of the water tank 200, and the other end is connected to the other side of the water tank 200, so as to realize the circulation of water between the water tank 200 and the regulating device 600; the regulating device 600 is used to adjust the water temperature and the flow rate of water. Specifically, a certain amount of water is added to the water tank 200, and the water circulates between the regulating device 600 and the water tank 200 to ensure that the vehicle-mounted sensor 500 is always in a water environment. One end of the clamping device 400 is connected to the output end of the vibration device 300. By starting the vibration device 300, a variety of vibration environments with different directions and different strengths can be simulated. Then, through the clamping device 400, the vibration direction, vibration strength, etc. are transmitted to the vehicle-mounted sensor 500 located at the other end of the clamping device 400 and located in the water tank 200, so as to accurately simulate the situation in which the vehicle-mounted sensor 500 is impacted by water flows of different directions and different strengths during the actual wading process of the vehicle, so as to evaluate the performance of the vehicle-mounted sensor 500 under dynamic water flow impact conditions. The water temperature and water flow rate are regulated by the regulating device 600. Considering that in actual situations, environmental factors such as weather will also affect the performance of the vehicle-mounted sensor 500, the water inflow conditions with different temperatures and different flow rates can be further accurately simulated. This vehicle-mounted sensor water inflow test equipment can not only accurately simulate a variety of complex scenes, but also has a simple overall structural design, convenient maintenance, and reduced maintenance costs.

[0033] In this embodiment, the control device 600 also has a constant temperature control module to keep the water temperature constant. In this embodiment, the temperature range of the control device 600 is -10℃-80℃, providing a variety of different water temperature environments. In some embodiments, the temperature range of the control device 600 can also be other temperature ranges such as 10℃-90℃. In this embodiment, the control device 600 includes: a thermostat, a circulation pump for ensuring water circulation, an evaporator, a heating pipe, a flow rate controller and a flow meter. When it is necessary to heat the water in the water tank 200, start the circulation pump, adjust the thermostat to the set temperature, and the water in the water tank 200 is heated by the thermostat and then to the heating pipe to reach the set temperature, and finally returns to the water tank 200. The evaporator in the control device 600 plays a role in lowering the water temperature. The flow rate controller controls the flow rate of the circulating water, and the flow meter measures the flow rate of the circulating water in real time. In this embodiment, the flow rate range of the circulating water between the water tank 200 and the control device 600 is 0.5-10m / s. In other embodiments, the flow rate range of the circulating water is determined according to actual test requirements.

[0034] In some embodiments, the control device 600 further includes: a compressor and a cooling system. Initially, the compressor sucks in the low-temperature and low-pressure refrigerant gas after evaporation and refrigeration, and then compresses it into high-temperature and high-pressure gas and sends it to the condenser in the cooling system; the high-pressure and high-temperature gas is cooled by the condenser to condense the gas into a normal-temperature and high-pressure liquid; when the normal-temperature and high-pressure liquid flows into the thermal expansion valve in the cooling system, it is throttled into a low-temperature and low-pressure wet steam, flows into the evaporator, absorbs the heat of the antifreeze in the evaporator to reduce its temperature; the evaporated refrigerant is sucked back into the compressor, and the next refrigeration cycle is repeated.

[0035] In this embodiment, the control device 600 is set as an air-cooled integrated cold and hot machine, which has the advantages of saving energy and reducing operating costs. In other embodiments, the control device 600 can also be other machines that can also control water temperature and water flow rate.

[0036] In this embodiment, refer to Figure 2-Figure 5 The clamping device 400 includes: a connecting plate 410, a first bracket 420, a second bracket 430, a first clamping plate 440, a second clamping plate 450 and an adjusting member 460. The upper end of the first bracket 420 is connected to the bottom surface of the connecting plate 410, and the lower end is connected to the output end of the vibration device 300; the upper end of the second bracket 430 is connected to the bottom surface of the connecting plate 410, and the lower end extends into the water tank 200; the first clamping plate 440 is assembled at the lower end of the second bracket 430; one end of the adjusting member 460 is connected to the first clamping plate 440, and the other end is connected to the second clamping plate 450. The adjusting member 460 plays the role of connecting the first clamping plate 440 and the second clamping plate 450 and adjusting the distance between the first clamping plate 440 and the second clamping plate 450 according to different sizes or types of vehicle-mounted sensors 500 to clamp the vehicle-mounted sensor 500 to be tested. The first clamping plate 440, the second clamping plate 450 and the adjusting member 460 cooperate to clamp the vehicle-mounted sensor 500. Specifically, in this embodiment, the adjusting member 460 includes: an adjusting member 460 body and a fastener that locks one end of the adjusting member 460 body with the first clamping plate 440 and the other end of the adjusting member 460 body with the second clamping plate 450, and the adjusting member 460 body and the fastener cooperate to adjust the distance between the first clamping plate 440 and the second clamping plate 450. In some embodiments, the adjusting member 460 can also be configured to be retractable, and the distance between the first clamping plate 440 and the second clamping plate 450 can be adjusted by retracting to accommodate vehicle-mounted sensors 500 of different sizes.

[0037] Further, two first brackets 420 are provided, and the upper ends are respectively connected to the two ends of the bottom surface of the connecting plate 410, and the lower ends are respectively connected to the two sides of the output end of the vibration device 300. Two second brackets 430 are provided, and the upper ends are connected to the bottom surface of the connecting plate 410, and the lower ends are respectively connected to the two ends of the first clamping plate 440. In this embodiment, four adjusting members 460 are provided, which are respectively connected to the peripheral sides of the first clamping plate 440 and the second clamping plate 450. In some embodiments, four first brackets 420 can also be provided, one second bracket 430 can also be provided, and two adjusting members 460 can also be provided.

[0038] In this embodiment, refer to Figure 2-Figure 3 as well as Figure 6-Figure 7 The vibration device 300 includes: a vibration table body 310, an exciter 320, a horizontal slide 340 and a vertical slide 330. One end of the exciter 320 is rotatably mounted on one side of the vibration table body 310, the horizontal slide 340 is movably mounted on the other side of the vibration table body 310, and the vertical slide 330 is detachably mounted on the output end of the exciter 320. The vibration table body 310, the horizontal slide 340, the vertical slide 330 and the exciter 320 cooperate to realize multi-dimensional vibration simulation of the vehicle-mounted sensor 500. In this embodiment, when it is necessary to simulate the vibration of the vehicle-mounted sensor 500 in the vertical direction, the lower end of the first bracket 420 in the clamping device 400 is connected to the vertical slide 330, and the exciter 320 drives the vertical slide 330 to realize the vibration simulation of the vehicle-mounted sensor 500 in the vertical direction. When it is necessary to change the simulated vertical vibration to simulated horizontal vibration, the vertical slide 330 is disassembled, and the exciter 320 is rotated so that the output end of the exciter 320 is docked with the horizontal slide 340. The exciter 320 drives the horizontal slide 340 to realize the horizontal vibration simulation of the vehicle-mounted sensor 500. In this embodiment, the vibration table body 310, the horizontal slide 340, the vertical slide 330 and the exciter 320 cooperate to realize the vertical and horizontal vibration simulation of the vehicle-mounted sensor 500. In other embodiments, the vibration table body 310, the horizontal slide 340, the vertical slide 330 and the exciter 320 cooperate to also realize the application of three mutually perpendicular vibration directions, namely the X-axis, the Y-axis and the Z-axis, to the vehicle-mounted sensor 500. In this embodiment, the vibration device 300 is a vibration table. In some embodiments, the vibration device 300 can also be other equipment that can provide multi-dimensional vibration.

[0039] In this embodiment, refer to Figure 2 The operating platform 100 includes: an operating platform body 110 and an operating frame 120. One end of the operating frame 120 is detachably connected to the periphery of the operating platform body 110. The operating frame 120 is provided with one or more. Figure 2, the operating platform body 110 and the operating frame 120 are detachably connected so as to be adaptively adjusted according to the height of the horizontal slide 340 and the vertical slide 330. Specifically, the operating frame 120 is provided with a plurality of fixings at different height positions so as to fix the operating platform body 110 to carry the water tank, and facilitate the clamping device 400 to clamp the vehicle-mounted sensor 500 at one end and extend it into the water tank 200, and connect the output end of the vibration device 300 at one end. In the present embodiment, the operating frame 120 is provided with a plurality of. In some embodiments, the operating frame 120 can also be provided with one. Further, a hollow structure is provided on the operating platform body 110 so that when the water tank 200 is assembled on the top surface of the operating platform body 110 and the vibration device 300 is located at the lower end of the top surface of the operating platform body 110, one end of the clamping device 400 connected to the output end of the vibration device 300 can pass through the hollow structure of the operating platform body 110 and connect to the output end of the vibration device 300. At the same time, the operating table body 110 is provided with a hollow structure to simplify the weight of the overall structure.

[0040] In the present embodiment, the water tank 200 is provided with a transparent structure so that the tester can observe the situation of the vehicle-mounted sensor 500 in the water tank 200 during the simulation test. At the same time, the tester can also adjust the amount of water in the water tank 200 through the transparent structure to adjust the water flow area of ​​the vehicle-mounted sensor 500. In the present embodiment, the water tank 200 structure adopts a combination of acrylic material and sheet metal to ensure the strength of the water tank 200 and its waterproofness. In other embodiments, the water tank 200 structure can also be made of other materials. In some embodiments, an ultrasonic Doppler flowmeter is also provided in the water tank 200 to measure the flow rate of water in the water tank 200 and the flow rate of water. In the present embodiment, both sides of the water tank 200 are connected to the control device 600 through a hose. In some embodiments, both sides of the water tank 200 can also be connected to the control device 600 through other pipes.

[0041] In this embodiment, refer to Figure 5 The vehicle-mounted sensor water ingress test equipment further includes: a liquid level switch 700 disposed in the water tank 200; the liquid level switch 700 is electrically connected to the control device 600. Specifically, the liquid level switch 700 is electrically connected to the solenoid valve in the control device 600. When the liquid level switch 700 detects that the liquid level in the water tank 200 is too low, the solenoid valve opens to remind the tester to add water to the water tank 200. In some embodiments, an automatic water replenishment device is electrically connected to the solenoid valve to automatically add water to the water tank 200 when the liquid level is too low.

[0042] In this embodiment, the vehicle-mounted sensor water ingress test equipment also includes: a monitoring device for monitoring the output signal of the vehicle-mounted sensor 500 (not shown in the accompanying drawings); the monitoring device is electrically connected to the vehicle-mounted sensor 500. In this embodiment, the vehicle-mounted sensor 500 outputs a digital signal and has a bus interface, such as RS-485, CAN, etc. The monitoring device can directly read the sensor signal through the corresponding bus. In this embodiment, a monitoring device is used to monitor the stability of the output data of the vehicle-mounted sensor 500. If the data fluctuates greatly and irregular changes frequently occur, it means that there is a problem with the sensor. It can also be judged through 485 communication. When 485 communication does not receive any data, the sensor has failed at this time. In addition, the vehicle-mounted sensor 500 to be tested is compared with the vehicle-mounted sensor 500 of the same model that is known to work normally. Under the same test conditions, their output signals, measurement results, etc. are monitored and compared. If the difference between the two is significant, it can be judged that the performance of the vehicle-mounted sensor 500 to be tested has declined or failed.

[0043] In this embodiment, refer to Figure 8 The vehicle-mounted sensor water ingress test device further includes: a control device 800, which is electrically connected to the control device 600. The control device 800 controls the operation and startup of the control device 600, and the control device 800 can also provide a user interface for setting system parameters, viewing system status, and recording historical data.

[0044] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A vehicle-mounted sensor water ingress testing device, characterized in that: include: Operating table (100); A water tank (200) mounted on the operating platform (100); A vibration device (300), the vibration device (300) being used to simulate multi-dimensional vibration; a clamping device (400), one end of which is used to clamp the vehicle-mounted sensor (500) and extends into the water tank (200), and the other end of which is connected to the output end of the vibration device (300); and A regulating device (600), one end of the regulating device (600) is connected to one side of the water tank (200), and the other end is connected to the other side of the water tank (200), so as to realize the circulation of water between the water tank (200) and the regulating device (600); the regulating device (600) is used to adjust the water temperature and the water flow rate.

2. The vehicle-mounted sensor water ingress testing equipment according to claim 1, characterized in that: The clamping device (400) comprises: a connecting plate (410), a first bracket (420) whose upper end is connected to the bottom surface of the connecting plate (410) and whose lower end is connected to the output end of the vibration device (300), a second bracket (430) whose upper end is connected to the bottom surface of the connecting plate (410) and whose lower end extends into the water tank (200), a first clamping plate (440) assembled at the lower end of the second clamping plate (430), a second clamping plate (450) and an adjusting member (460) whose one end is connected to the first clamping plate (440) and the other end is connected to the second clamping plate (450); the adjusting member (460) is used to adjust the distance between the first clamping plate (440) and the second clamping plate (450); the first clamping plate (440), the second clamping plate (450) and the adjusting member (460) cooperate to clamp the vehicle-mounted sensor (500).

3. The vehicle-mounted sensor water ingress testing equipment according to claim 1, characterized in that: The vehicle-mounted sensor water ingress testing device further comprises: a liquid level switch (700) arranged in the water tank (200); the liquid level switch (700) is electrically connected to the control device (600).

4. The vehicle-mounted sensor water ingress testing equipment according to claim 1, characterized in that: The vibration device (300) also includes: a vibration table body (310), an exciter (320) with one end rotatably mounted on one side of the vibration table body (310), a horizontal slide (340) movably mounted on the other side of the vibration table body (310), and a vertical slide (330) detachably mounted on the output end of the exciter (320); the vibration table body (310), the horizontal slide (340), the vertical slide (330) and the exciter (320) cooperate to realize multi-dimensional vibration simulation of the vehicle-mounted sensor (500).

5. The vehicle-mounted sensor water ingress testing equipment according to claim 1, characterized in that: The vehicle-mounted sensor water ingress testing equipment further comprises: a monitoring device for monitoring the output signal of the vehicle-mounted sensor (500); the monitoring device is electrically connected to the vehicle-mounted sensor (500).

6. The vehicle-mounted sensor water ingress testing equipment according to claim 1, characterized in that: The vehicle-mounted sensor water ingress testing equipment further comprises: a control device (800), wherein the control device (800) is electrically connected to the regulating device (600).

7. The vehicle-mounted sensor water ingress testing equipment according to claim 1, characterized in that: The operating table frame (100) comprises: an operating table body (110) and an operating frame body (120) having one end detachably connected to the peripheral side of the operating table body (110); one or more operating frames (120) are provided.

8. The vehicle-mounted sensor water ingress testing equipment according to claim 7, characterized in that: The operating table body (110) is provided with a hollow structure.

9. The vehicle-mounted sensor water ingress testing device according to any one of claims 1 to 8, characterized in that: The water tank (200) is provided with a transparent structure.

10. The vehicle-mounted sensor water ingress testing device according to any one of claims 1 to 8, characterized in that: The control device (600) is configured as an air-cooled integrated heating and cooling machine.

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