Sensor air pressure testing device

Abstract

The utility model provides an air pressure testing device for a sensor. The air pressure testing device comprises an air supply device, a bottom plate, a testing plate arranged on the bottom plate, a limiting plate arranged above the testing plate and a cover plate, wherein a detection sensor is fixed on a bearing plate, and the bearing plate is placed on the limiting plate, so that a probe on the test plate is in contact conduction with the sensor to be detected; the bearing plate and the cover plate form a closed cavity for accommodating the to-be-detected sensor, and the air supply device is used for providing preset test air pressure for the to-be-detected sensor; the test board is used for collecting test data of the sensor to be detected. According to the utility model, the high-efficiency air pressure test of the sensor can be realized.

Description

Technical Field

[0001] This utility model relates to the field of product cutting technology in system-level packaging, and more specifically, to a sensor air pressure testing device. Background Technology

[0002] An air flow sensor is a device primarily used to detect and measure the speed and volume of airflow. It can monitor and measure the flow rate and volume of gas (usually air) in equipment such as pipes, ventilation systems, and engines, and convert it into electrical signals for analysis and control.

[0003] Currently, when airflow sensor products are marketed and used, it is necessary to clearly identify the sensor's testing accuracy for gas pressure differences. However, existing related tests can only be applied to actual carriers, and there is no dedicated equipment to perform gas permeation tests on the sensors before installation and use. This makes it impossible to accurately identify the product's testing accuracy, resulting in limited testing and low efficiency. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide a sensor air pressure testing device to solve the problems of low efficiency and poor accuracy caused by the need to complete air pressure testing on an actual carrier in existing products.

[0005] The sensor air pressure testing device provided by this utility model includes an air supply device, a base plate, a test plate disposed on the base plate, a limiting plate disposed above the test plate, and a cover plate; wherein,

[0006] The sensor to be tested is fixed on the support plate, and the support plate is placed on the limiting plate so that the probe on the test plate makes contact with the sensor to be tested and conducts a connection.

[0007] The support plate and the cover plate form a sealed cavity to accommodate the sensor to be tested, and the air supply device is used to provide a preset test air pressure to the sensor to be tested;

[0008] The test board is used to collect test data from the sensor under test.

[0009] In addition, an optional structural feature is that at least one limiting groove adapted to the bearing plate is provided on the limiting plate;

[0010] The carrier plate is positioned within the limiting groove so that the pads of the sensor to be tested make contact with the probe and conduct electricity.

[0011] In addition, an optional structural feature is that the limiting grooves are arranged in an array on the limiting plate, and the number of the bearing plates is consistent with the number of the limiting grooves;

[0012] At least one sensor to be detected is provided on each carrier plate.

[0013] In addition, an optional structural feature is that at least one limiting buckle is provided on each side of the limiting plate;

[0014] The limiting buckle is used to fasten and limit the two ends of the cover plate.

[0015] In addition, an optional structural feature is that at least one limiting bolt and a matching limiting nut are provided at both ends of the limiting plate;

[0016] Limiting holes are provided on the cover plate at positions corresponding to the limiting bolts;

[0017] The cover plate and the limiting plate are locked and limited by the limiting bolt and the limiting nut.

[0018] In addition, an optional structural feature is that a sealing gasket corresponding to the position of the sensor to be detected is provided on the underside of the cover plate; wherein,

[0019] The sealing gasket is used to cover and seal the sensor to be tested.

[0020] In addition, an optional structural feature is that the gas supply device includes a gas source, a gas pressure control valve, and an air inlet connected to the sealed cavity;

[0021] The air pressure control valve is used to adjust the air pressure at the air inlet.

[0022] In addition, an optional structural feature is that an air passage communicating with the air inlet is provided on the cover plate, and an air hole corresponding to the outlet position of the air passage is provided on the sealing gasket.

[0023] The gas source is applied to the sensor to be detected through the air passage and the air hole.

[0024] In addition, an optional structural feature is that both the test board and the carrier board are PCBs or FPCBs.

[0025] In addition, an optional structural feature is that it also includes a control system connected and conductive to the test board, the support plate, and the air supply device.

[0026] Using the aforementioned sensor pressure testing device, the sensor to be tested is fixed on a support plate, and then the support plate is limited by a limiting plate to make contact and conduction between the probe on the test plate and the sensor to be tested. The air supply device provides test air pressure to each individual sensor to be tested. The test plate collects the test data of the sensor to be tested after pressure is applied, thereby simultaneously completing the individual testing of multiple sensors. This not only meets the testing requirements of a single sensor but also improves testing efficiency. It is applicable to the testing of various types of pressure or air pressure sensors. Attached Figure Description

[0027] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0028] Figure 1 This is a schematic diagram of the open state structure of the sensor air pressure testing device according to an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the buckling structure of the sensor air pressure testing device according to an embodiment of the present invention.

[0030] The reference numerals in the above figures include: base plate 1, limit buckle 2, limit nut 3, air supply device 4, cover plate 5, limit slot 51, bearing plate 6, test plate 7, sealing gasket 8, limit plate 9, sensor to be tested 10.

[0031] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0032] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0033] In the following description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] To provide a detailed description of the sensor air pressure testing device of this utility model, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0035] Figure 1 and Figure 2 The schematic structures of the sensor air pressure testing device according to the embodiments of the present invention are shown in the open and closed states, respectively.

[0036] like Figure 1 and Figure 2 As shown in the figure, the sensor air pressure testing device of this utility model includes an air supply device 4, a base plate 1, a test plate 7 disposed on the base plate 1, a limiting plate 9 disposed above the test plate 7, and a cover plate 5. The sensor 10 to be tested is fixedly positioned on the support plate 6. By placing the support plate 6 on the limiting plate 9, the probe on the test plate 7 makes contact with the sensor 10 to be tested and conducts a connection. At this time, the support plate 6 and the cover plate 5 form a sealed cavity to accommodate the sensor 10 to be tested. The air supply device 4 can then provide a preset test air pressure to the sensor 10 to be tested, and the test plate 7 can collect relevant test data of the sensor 10 to be tested. When multiple support plates 6 are set, or when multiple sensors 10 to be tested are set on the same support plate 6, multiple sensors can be tested simultaneously and independently. The operation is convenient, efficient, and the test standards are the same, resulting in higher test accuracy.

[0037] At least one limiting groove adapted to the carrier plate 6 can be provided on the limiting plate 9. Each carrier plate 6 is respectively limited in the corresponding limiting groove. Through the mutual positioning of the carrier plate 6 and the limiting plate 9, it can be ensured that the pad of the sensor 10 to be tested on the carrier plate 6 can contact and conduct with the probe at the corresponding position on the test board 7, thereby completing the acquisition of test data.

[0038] It can be seen that, in order to improve testing efficiency, each limiting slot can be arranged in a regular array on the limiting plate 9, and the number of bearing plates 6 is consistent with the number of limiting slots. At the same time, at least one sensor to be tested can be further set on each bearing plate 6, and the sensors to be tested are isolated from each other, thereby realizing the simultaneous independent testing of multiple sensors and effectively improving testing efficiency.

[0039] In the sensor air pressure testing device of this utility model embodiment, the air supply device 4 includes an air source, an air pressure control valve and an air inlet connected to a sealed cavity. The air pressure control valve is used to adjust the air pressure at the air inlet to complete the test results of the sensor under different air pressures. In addition, it can also meet the testing needs of sensors of different types or ranges.

[0040] Furthermore, a sealing gasket 8 corresponding to the position of the sensor 10 to be tested is provided on the lower side of the cover plate 5. The sealing gasket 8 covers and seals a single sensor to be tested or multiple sensors to be tested located on the same carrier plate to isolate each sensor and ensure the accuracy of detection by a single sensor. For this purpose, an air passage connected to the air inlet is also provided on the cover plate 5. One end of each air passage is connected to the air inlet, and the other end extends to each sensor 10 to be tested. Correspondingly, an air hole corresponding to the outlet position of the air passage is provided on the sealing gasket 8. The position of the air hole can be set according to the detection area position of the sensor 10 to be tested, so that the air source can be accurately applied to the sensor 10 to be tested after passing through the air passage and the air hole.

[0041] To achieve effective positioning of the cover plate 5 and the limiting plate 9, and to ensure the positional accuracy and sealing effect of the sensor 10 to be tested, at least one limiting buckle 2 can be set on both sides of the limiting plate 9 or on both sides of the base plate 1. A limiting slot corresponding to the limiting buckle 2 can be set on the cover plate 5. The two ends of the cover plate 5 can be fastened or opened by opening and closing the limiting buckle 2.

[0042] Furthermore, at least one limiting bolt and a matching limiting nut 3 can be provided at both ends of the limiting plate 9, and a limiting hole can be provided on the cover plate 5 at the position corresponding to the limiting bolt. After the limiting bolt passes through the limiting hole of the cover plate 5, it is locked by the limiting nut 3, which can achieve effective positioning and sealing of the bearing plate 6 and the sensor 10 to be tested on it. It can be seen that the limiting bolt can also directly penetrate the bottom plate, the test plate and the limiting plate, and then achieve effective positioning of each layer plate through the cooperation of the limiting bolt and the limiting nut.

[0043] In another embodiment, the positions of the base plate 1, test plate 7 and limiting plate 9 can be locked in advance. The opening and locking of the cover plate 5 can be achieved by the cooperation of the limiting bolt and the limiting nut. In order to prevent the cover plate 5 from causing excessive compression to the limiting plate during the locking process, a pad structure can be set on the limiting plate. After the cover plate 5 is fastened and locked, the pad is limited between the cover plate 5 and the limiting plate 9.

[0044] It should be noted that both the test board 7 and the carrier board 6 are made of PCB or FPCB. The sensor to be tested 10 is set on the carrier board 6 and can be electrically connected to the carrier board 6. The test board 7 completes the transmission of test signals by connecting to the carrier board 6 or the sensor to be tested 10. During the test, the sensor to be tested 10 collects the intake air pressure and outputs the corresponding electrical signal. The test board 7 collects the sensor data to complete the air pressure test of the product.

[0045] In addition, the sensor air pressure testing device of this utility model embodiment may also include a control system connected to the test plate 7, the support plate 6 and the air supply device 4. The control system can automatically adjust the air supply pressure value and analyze and process the detection results of multiple sensors 10 to be tested and display them in real time.

[0046] According to the sensor air pressure testing device of this utility model, the sensor to be tested is fixed on the support plate, and then the support plate is limited by the limiting plate so that the probe on the test plate makes contact with the sensor to be tested. Then, the air supply device provides test air pressure to each individual sensor to be tested. The test plate collects the test data of the sensor to be tested on the air pressure, which can more accurately identify the product's test accuracy of gas pressure difference. At the same time, it can realize the individual testing of multiple sensors, which can not only meet the testing requirements of a single sensor, but also improve the testing efficiency. It is applicable to the testing scenarios of various types of sensors.

[0047] The sensor pressure testing device according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the sensor pressure testing device proposed in the present invention without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A sensor-based air pressure testing device, characterized in that, It includes an air supply device, a base plate, a test plate mounted on the base plate, a limiting plate positioned above the test plate, and a cover plate; wherein, The sensor to be tested is fixed on the support plate, and the support plate is placed on the limiting plate so that the probe on the test plate makes contact with the sensor to be tested and conducts a connection. The support plate and the cover plate form a sealed cavity to accommodate the sensor to be tested, and the air supply device is used to provide a preset test air pressure to the sensor to be tested; The test board is used to collect test data from the sensor under test.

2. The sensor pressure testing device according to claim 1, characterized in that, At least one limiting groove adapted to the bearing plate is provided on the limiting plate; The carrier plate is positioned within the limiting groove so that the pads of the sensor to be tested make contact with the probe and conduct electricity.

3. The sensor pressure testing device according to claim 2, characterized in that, The limiting grooves are arranged in an array on the limiting plate, and the number of the bearing plates is consistent with the number of the limiting grooves; At least one sensor to be detected is provided on each carrier plate.

4. The sensor pressure testing device according to claim 1, characterized in that, At least one limiting buckle is provided on each side of the limiting plate; The limiting buckle is used to fasten and limit the two ends of the cover plate.

5. The sensor pressure testing device according to claim 1, characterized in that, At least one limiting bolt and a matching limiting nut are provided at both ends of the limiting plate; Limiting holes are provided on the cover plate at positions corresponding to the limiting bolts; The cover plate and the limiting plate are locked and limited by the limiting bolt and the limiting nut.

6. The sensor pressure testing device according to claim 1, characterized in that, A sealing gasket corresponding to the position of the sensor to be detected is provided on the underside of the cover plate; wherein, The sealing gasket is used to cover and seal the sensor to be tested.

7. The sensor pressure testing device according to claim 6, characterized in that, The gas supply device includes a gas source, a gas pressure control valve, and an air inlet connected to the sealed cavity. The air pressure control valve is used to adjust the air pressure at the air inlet.

8. The sensor pressure testing device according to claim 7, characterized in that, An air passage communicating with the air inlet is provided on the cover plate, and an air hole corresponding to the outlet position of the air passage is provided on the sealing gasket. The gas source is applied to the sensor to be detected through the air passage and the air hole.

9. The sensor pressure testing device according to claim 1, characterized in that, Both the test board and the carrier board are PCBs or FPCBs.

10. The sensor pressure testing device according to claim 1, characterized in that, It also includes a control system that is connected and conductive to the test board, the support plate, and the air supply device.

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