Rainfall sensor testing device

Abstract

The utility model discloses a rainfall sensor testing device. The rainfall sensor testing device comprises a rack, a windshield, a positioning device and a rainfall simulation device, the windshield is fixed on the rack; the positioning device is matched with the rack and is used for driving the rainfall sensor to abut against the lower side of the windshield; the rainfall simulation device is matched on the rack, the rainfall simulation device comprises a raindrop simulation piece and a lifting driving device for driving the raindrop simulation piece to lift up and down, the raindrop simulation piece is provided with a plurality of raindrop simulation heads capable of guiding light and transmitting light, and each raindrop simulation head of the raindrop simulation piece is movably contacted with the upper side of the windshield. According to the utility model, test environments for simulating different rainfall can be provided so as to test the rainfall sensor, test conditions can be reproduced, and water sources can be saved.

Description

Technical Field

[0001] The utility model relates to the field of rain sensors, in particular to a rain sensor testing device. Background Art

[0002] A rain sensor is a sensor widely used in automobiles. It senses changes in rainfall and controls the operation of the wipers accordingly, making it easier for car drivers to use the system.

[0003] The operating principle of existing rain sensors is as follows: light emitted by the sensor's light-emitting element strikes the car's windshield at a set angle. Some of this light is reflected by the windshield and received by the sensor's photosensor, which converts it into an electrical signal. When raindrops fall on the windshield, the glass scatters light more effectively, reducing the reflected light. This weakens the light received by the photosensor, and the resulting electrical signal. Therefore, the rain sensor can determine the amount of rain falling on the windshield by measuring the intensity of the electrical signal output by the photosensor.

[0004] Currently, rain sensors are tested and calibrated manually by simulating rainy environments with different rainfall amounts using shower equipment. This is cumbersome, and the test conditions are basically impossible to reproduce. It also consumes a lot of water, which is not conducive to saving resources.

[0005] In view of the existence of the above problems, it is necessary to study a rain sensor testing device that can provide a test environment simulating different rainfall amounts to facilitate testing of the rain sensor, and can reproduce the test conditions and save water. Utility Model Content

[0006] The purpose of the utility model is to provide a rain sensor testing device, which can provide a testing environment simulating different rainfall amounts to facilitate testing of the rain sensor, and can reproduce the test conditions and save water.

[0007] In order to achieve the above objectives, the solution of the present invention is:

[0008] A rain sensor testing device comprises a frame, a windshield, a positioning device, and a rain simulation device; the windshield is fixed to the frame; the positioning device is engaged with the frame and is used to drive the rain sensor against the lower side of the windshield; the rain simulation device is engaged with the frame, and the rain simulation device comprises a raindrop simulation member and a lifting drive device for driving the raindrop simulation member to move up and down; the raindrop simulation member has multiple raindrop simulation heads that can guide and transmit light, and each raindrop simulation head of the raindrop simulation member movably contacts the upper side of the windshield.

[0009] The frame is provided with a bracket located above the windshield; the lifting drive device is fixed to the bracket.

[0010] The lifting drive device adopts a telescopic motor.

[0011] The raindrop simulation component includes a connecting seat and a plurality of raindrop simulation heads fixed to the connecting seat, and the connecting seat is connected to the telescopic shaft of the telescopic motor.

[0012] Each raindrop simulation head of the raindrop simulation part is a soft structure.

[0013] The material of each raindrop simulation head of the raindrop simulation component is silica gel.

[0014] The positioning device includes a positioning jig, a cam lifting mechanism for driving the positioning jig to lift and position, and a push-pull quick clamp linked to the cam lifting mechanism. The positioning jig is located below the windshield.

[0015] The positioning fixture is provided with a placement groove.

[0016] The positioning fixture is provided with a guide rod which is slidably connected with the frame.

[0017] The frame is provided with two spaced mounting plates, and both ends of the windshield are respectively connected to the two mounting plates.

[0018] After adopting the above scheme, when the rain sensor testing device of the present invention is used, first, the positioning device presses the rain sensor against the lower side of the windshield; then, the lifting drive device drives the raindrop simulation part to lift and lower back and forth so that each raindrop simulation head of the raindrop simulation part reciprocates and contacts the upper side of the windshield corresponding to the rain sensor; because the raindrop simulation head has light-guiding and light-transmitting properties, when the raindrop simulation head contacts the upper side of the windshield corresponding to the rain sensor, the raindrop simulation head will change the infrared light emitted by the rain sensor and affect the intensity of the infrared light received by the rain sensor, thereby simulating the effect of raindrops falling on the windshield above the rain sensor; in this way, the present invention adjusts the speed at which the raindrop simulation part lifts and lowers, thereby adjusting the speed at which each raindrop simulation head of the raindrop simulation part moves back and forth. The speed of the upper side of the windshield that contacts the rain sensor repeatedly can simulate the effect of raindrops of different amounts falling on the windshield on the upper side of the rain sensor, thereby providing a test environment simulating different amounts of rain to facilitate testing of the rain sensor; moreover, the utility model only needs to select the corresponding raindrop simulation parts and control the speed at which the raindrop simulation parts rise and fall, so as to reproduce the corresponding test conditions and improve the reliability of the test results; in addition, the utility model can simulate raindrops of different diameters by controlling the diameter of the raindrop simulation head, and the simulation range is wider; in addition, the rain sensor test device of the utility model does not need to add water when used, which helps to save water resources, and at the same time helps to ensure the dryness of the test environment, prevent the rain sensor from getting damp during production, and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0021] Description of labels:

[0022] Rack 1, mounting plate 11, bracket 12,

[0023] Windshield 2,

[0024] Positioning device 3, positioning fixture 31, placement slot 311, guide rod 312, push-pull quick clamp 32,

[0025] Rainfall simulation device 4, raindrop simulation member 41, raindrop simulation head 411, connecting seat 412, lifting drive device 42. DETAILED DESCRIPTION

[0026] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0027] like Figure 1 and Figure 2 As shown, the utility model discloses a rain sensor testing device, which includes a frame 1, a windshield 2, a positioning device 3, and a rain simulation device 4; the windshield 2 is fixed on the frame 1; the positioning device 3 is matched with the frame 1 and is used to drive the rain sensor to abut against the lower side of the windshield 2; the rain simulation device 4 is matched with the frame 1, and the rain simulation device 4 includes a raindrop simulation member 41 and a lifting drive device 42 for driving the raindrop simulation member 41 to move up and down, the raindrop simulation member 41 has a plurality of raindrop simulation heads 411 that can guide and transmit light, and each raindrop simulation head 411 of the raindrop simulation member 41 is in movable contact with the upper side of the windshield 2.

[0028] When the rain sensor testing device of the present invention is used, first, the positioning device 3 presses the rain sensor against the lower side of the windshield 2; then, the lifting drive device 42 drives the raindrop simulation part 41 to lift and lower back and forth so that each raindrop simulation head 411 of the raindrop simulation part 41 reciprocates and contacts the upper side of the windshield 2 corresponding to the rain sensor; since the raindrop simulation head 411 has light-guiding and light-transmitting properties, when the raindrop simulation head 411 contacts the upper side of the windshield 2 corresponding to the rain sensor, the raindrop simulation head 411 will change the infrared rays emitted by the rain sensor and affect the intensity of the infrared rays received by the rain sensor, thereby simulating the effect of raindrops falling on the windshield 2 on the upper side of the rain sensor; in this way, the present invention adjusts the speed of the raindrop simulation part 41 lifting and lowering, thereby adjusting the intensity of each raindrop simulation head 41 of the raindrop simulation part 41. The speed at which the simulated head 411 reciprocates in contact with the upper side of the windshield 2 corresponding to the rain sensor can simulate the effect of raindrops of different amounts falling on the windshield 2 on the upper side of the rain sensor, thereby providing a test environment simulating different amounts of rain to facilitate testing of the rain sensor; moreover, the utility model only needs to select the corresponding raindrop simulation component 41 and control the speed at which the raindrop simulation component 41 rises and falls, so as to reproduce the corresponding test conditions and improve the reliability of the test results; in addition, the rain sensor testing device of the utility model does not require water when used, which helps to save water resources, and at the same time helps to ensure the dryness of the test environment, prevent the rain sensor from getting damp during production, and improve product quality; in addition, the utility model can simulate raindrops of different diameters by controlling the diameter of the raindrop simulation head 411, and the simulation range is wider.

[0029] In an embodiment of the present utility model, the positioning device 3 may include a positioning jig 31, a cam lifting mechanism (not shown) that drives the positioning jig 31 to rise and fall and position, and a push-pull quick clamp 32 that is linked to the cam lifting mechanism. The positioning jig 31 is located below the windshield 2; the positioning jig 31 is used to place the rain sensor, and the positioning jig 31 is provided with a placement groove 311 for placing the rain sensor to prevent the rain sensor from shifting. The positioning jig 31 may also be provided with a guide rod 312 that slides with the frame 1 so that the positioning jig 31 moves smoothly. The push-pull quick clamp 32 drives the positioning jig 31 to rise and fall through the cam lifting mechanism. The push-pull quick clamp 32 has its own locking function, which enables the positioning device 3 to always drive the rain sensor against the lower side of the windshield 2.

[0030] In an embodiment of the present invention, the frame 1 is provided with two spaced mounting plates 11 , and both ends of the windshield 2 are connected to the two mounting plates 11 , so that there is sufficient operating space under the windshield 2 for disassembling and assembling the rain sensor.

[0031] In an embodiment of the present invention, the frame 1 may be provided with a bracket 12 located above the windshield 2, and the bracket 12 may be connected to the two mounting plates 11; the lifting drive device 42 is fixed to the bracket 12, and the lifting drive device 42 may adopt a telescopic motor; and the raindrop simulation part 41 includes a connecting seat 412 and a plurality of raindrop simulation heads 411 fixed to the connecting seat 412, and the connecting seat 412 is connected to the telescopic shaft of the telescopic motor so that the telescopic motor can drive the raindrop simulation part 41 to move up and down.

[0032] In an embodiment of the present invention, each raindrop simulation head 411 of the raindrop simulation member 41 is a soft structure, which can prevent the raindrop simulation head 411 from damaging the windshield 2; specifically, the material of the raindrop simulation head 411 is silicone, so that the raindrop simulation head 411 can both guide and transmit light and can also be deformed at the same time; the raindrop simulation head 411 can be in the shape of a straight rod, so that the deformation range of the raindrop simulation head 411 is large.

[0033] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A rain sensor testing device, characterized in that: Includes a frame, a windshield, a positioning device, and a rainfall simulation device; The windshield is fixed on the frame; The positioning device is engaged with the frame and is used to drive the rain sensor against the underside of the windshield; The rain simulation device is mounted on a frame and includes a raindrop simulation component and a lifting drive device for driving the raindrop simulation component to move up and down. The raindrop simulation component has a plurality of raindrop simulation heads that can guide and transmit light. Each raindrop simulation head of the raindrop simulation component is in movable contact with the upper side of the windshield.

2. The rain sensor testing device according to claim 1, wherein: The frame is provided with a bracket located above the windshield; the lifting drive device is fixed to the bracket.

3. The rain sensor testing device according to claim 1 or 2, wherein: The lifting drive device adopts a telescopic motor.

4. The rain sensor testing device according to claim 3, wherein: The raindrop simulation component includes a connecting seat and a plurality of raindrop simulation heads fixed to the connecting seat, and the connecting seat is connected to the telescopic shaft of the telescopic motor.

5. The rain sensor testing device according to claim 1, wherein: Each raindrop simulation head of the raindrop simulation part is a soft structure.

6. The rain sensor testing device according to claim 1 or 4, characterized in that: The material of each raindrop simulation head of the raindrop simulation component is silica gel.

7. The rain sensor testing device according to claim 1, wherein: The positioning device includes a positioning jig, a cam lifting mechanism for driving the positioning jig to lift and position, and a push-pull quick clamp linked to the cam lifting mechanism. The positioning jig is located below the windshield.

8. The rain sensor testing device according to claim 7, wherein: The positioning fixture is provided with a placement groove.

9. The rain sensor testing device according to claim 7, wherein: The positioning fixture is provided with a guide rod which is slidably connected with the frame.

10. The rain sensor testing device according to claim 1 or 7, wherein: The frame is provided with two spaced mounting plates, and both ends of the windshield are respectively connected to the two mounting plates.

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