Air pressure sensor on-line test tool

Abstract

The utility model relates to an air pressure sensor on-line test tool which comprises a sensor positioning seat, a gland and a pressurization plate which are arranged at the upper end and the lower end of the sensor positioning seat, a PCB test board is arranged between the sensor positioning seat and the pressurization plate, a pressurization air channel is arranged in the pressurization plate, the upper end of the pressurization air channel is located at the top of the pressurization plate, and the other end of the pressurization air channel is connected with an air pipe connector. A first vent hole is formed in the PCB test board, and pin connecting ends are arranged on the periphery of the first vent hole. According to the utility model, a plurality of air pressure sensors can be adjusted and tested at the same time, the working efficiency is improved, and the sealing performance is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of air pressure sensor testing, and relates to an on-line testing tool for air pressure sensors. Background Art

[0002] During the manufacturing process of air pressure sensors, it is necessary to supply pressure to the sensors while operating them, and at the same time monitor their performance parameters.

[0003] The existing testing tools have low efficiency and low testing accuracy, and there is a problem of pressure gas leakage. Summary of the Invention

[0004] The purpose of the utility model is to provide an on-line testing tool for air pressure sensors, which can solve the problem of low efficiency of the testing tool.

[0005] According to the technical scheme provided by the utility model: an on-line testing tool for air pressure sensors includes a sensor positioning seat, a pressure cover and a pressure plate are installed at the upper and lower ends of the sensor positioning seat, and a PCB testing board is provided between the sensor positioning seat and the pressure plate.

[0006] As a further improvement of the utility model, a pressure supply air passage is provided in the pressure plate, the upper end of the pressure supply air passage is located at the top of the pressure plate, and the other end of the pressure supply air passage is connected to an air pipe joint.

[0007] As a further improvement of the utility model, a first ventilation hole is opened in the PCB testing board, and pin connection ends are provided around the first ventilation hole.

[0008] As a further improvement of the utility model, a sensor positioning groove is opened at the top of the sensor positioning seat, pin holes are provided on the outer periphery of the sensor positioning groove, and a second ventilation hole is communicated below the sensor positioning groove.

[0009] As a further improvement of the utility model, a processing through hole is opened in the pressure cover.

[0010] As a further improvement of the utility model, a sealing ring is provided between the pressure plate and the PCB testing board, and a sealing ring is installed on the PCB testing board.

[0011] As a further improvement of the utility model, a first sealing ring installation groove is provided at the top of the pressure plate, the upper end of the pressure supply air passage is located in the first sealing ring installation groove; a second sealing ring installation groove is provided at the bottom of the testing board, and the bottom end of the first ventilation hole is located in the second sealing ring installation groove; the same sealing ring is installed in the first sealing ring installation groove and the second sealing ring installation groove; a third sealing ring installation groove is provided at the upper part of the sensor positioning seat, and the third sealing ring installation groove is located between the sensor positioning groove and the second ventilation hole.

[0012] As a further improvement of the utility model, the pressure plate, the sensor positioning seat, the pressure cover and the PCB testing board are connected by positioning pins and bolts.

[0013] The positive and progressive effects of this application are as follows:

[0014] The utility model can simultaneously adjust and test multiple pressure sensors, improving work efficiency and having good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the utility model.

[0016] Figure 2 It is a cross-sectional view of the pressure plate of the utility model.

[0017] Figure 3 It is a schematic structural diagram of the sensor positioning seat of the utility model.

[0018] Figure 4 It is a schematic structural diagram of the gland of the utility model.

[0019] Figure 5 It is a schematic structural diagram of the PCB test board of the utility model.

[0020] Figures 1-5 In [the figure], it includes a pressure plate 1, a pressure air channel 1-1, a first sealing ring installation groove 1-2, a sensor positioning seat 2, a sensor positioning groove 2-1, a second ventilation hole 2-2, a third sealing ring installation groove 2-3, a pin hole 2-4, a gland 3, a machining through hole 3-1, a PCB test board 4, a first ventilation hole 4-1, a pin connection end 4-2, etc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present utility model are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present utility model described herein. In addition, similar terms such as "including" and "having" mean that in addition to the content already listed in "including" and "having", other content that has not been listed can also be "included" and "had"; for example, a process, method, system, product or device that can include a series of steps or units does not have to be limited to the steps or units that have been clearly listed, but can include other steps or units that have not been clearly listed or are inherent to these processes, methods, products or devices.

[0024] Due to the drawing angle problem, some components may not be drawn, but their positions and connection relationships can be understood according to the text description part.

[0025] As Figure 1 shown, the present utility model is an on-line test tooling for a pressure sensor, including a sensor positioning seat 2. A gland 3 and a pressure plate 1 are installed at the upper and lower ends of the sensor positioning seat 2, and a PCB test board 4 is provided between the sensor positioning seat 2 and the pressure plate 1.

[0026] As Figure 2 shown, a pressure air passage 1-1 is provided in the pressure plate 1. The upper end of the pressure air passage 1-1 is located at the top of the pressure plate 1, and the other end of the pressure air passage 1-1 is connected to an air pipe joint. The air pipe joint is used to connect a high-pressure test air source.

[0027] As Figure 5 shown, a first ventilation hole 4-1 is opened in the PCB test board 4, and pin connection ends 4-2 are provided around the first ventilation hole 4-1. In this embodiment, the pressure sensor has 8 pins, which are divided into two columns and are located on both sides of the sensor. Therefore, the pin connection ends 4-2 are also set in two columns, with 4 pin connection ends 4-2 in each column.

[0028] As Figure 3 shown, a sensor positioning groove 2-1 is opened at the top of the sensor positioning seat 2. Pin holes 2-4 are provided on the outer periphery of the sensor positioning groove 2-1, and a second ventilation hole 2-2 is communicated below the sensor positioning groove 2-1.

[0029] As Figure 4 shown, a processing through hole 3-1 is opened on the gland 3 to facilitate the adjustment and processing of the pressure sensor. The parameters of the sensor are determined by the resistor installed thereon. The processing equipment adjusts the resistor installed on the sensor to the required value through the processing through hole 3-1.

[0030] To ensure the airtightness of the air pressure, a sealing ring is provided between the pressure plate 1 and the PCB test board 4, and the sealing ring is installed on the PCB test board 4.

[0031] Specifically, a first sealing ring installation groove 1-2 is provided at the top of the pressure plate 1, and the upper end of the pressure air passage 1-1 is located in the first sealing ring installation groove 1-2; a second sealing ring installation groove 4-3 is provided at the bottom of the test board 4, and the bottom end of the first ventilation hole 4-1 is located in the second sealing ring installation groove 4-3; the same sealing ring is installed in the first sealing ring installation groove 1-2 and the second sealing ring installation groove 4-3. A third sealing ring installation groove 2-3 is provided at the upper part of the sensor positioning seat 2, and the third sealing ring installation groove 2-3 is located between the sensor positioning groove 2-1 and the second ventilation hole 2-2.

[0032] The pressure plate 1, the sensor positioning seat 2, the gland 3, and the PCB test board 4 are connected by positioning pins and bolts.

[0033] The working process of the present utility model is as follows:

[0034] The air pressure sensor is placed in the sensor positioning groove 2-1, the pins of the air pressure sensor pass through the pin holes 2-4 and then contact the pin connection end 4-2. The gas is introduced from the pipe joint and sequentially passes through the pressure air passage 1-1, the first ventilation hole 4-1, and the second ventilation hole 2-2 and then acts on the air pressure sensor, so that the air pressure sensor is within the test air pressure; when operating on the resistance on the sensor through the processing through hole 3-1, the performance value of the air pressure sensor can be known in time through the PCB test board 4.

[0035] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present utility model, but the present utility model is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these modifications and improvements are also regarded as the protection scope of the present utility model.

Claims

1. An online test tool for an air pressure sensor, characterized in that: The sensor positioning seat (2) comprises a pressure cover (3) and a pressure plate (1) installed at the upper and lower ends of the sensor positioning seat (2), and a PCB test board (4) is provided on the sensor positioning seat (2) and the pressure plate (1).

2. The pressure sensor online testing tool as claimed in claim 1, characterized in that: A pressurized air channel (1-1) is provided in the pressurized plate (1), the upper end of the pressurized air channel (1-1) is located at the top of the pressurized plate (1), and the other end of the pressurized air channel (1-1) is connected to a trachea joint.

3. The pressure sensor online testing tool as claimed in claim 1, characterized in that: A first ventilation hole (4-1) is provided in the PCB test board (4), and pin connection ends (4-2) are provided around the first ventilation hole (4-1).

4. The online testing tool for air pressure sensor according to claim 3, characterized in that: A sensor positioning groove (2-1) is formed on the top of the sensor positioning seat (2), a pin hole (2-4) is formed on the outer periphery of the sensor positioning groove (2-1), and the lower part of the sensor positioning groove (2-1) is connected to a second vent hole (2-2).

5. The online testing tool for air pressure sensor according to claim 1, characterized in that: The gland (3) is provided with a processed through hole (3-1).

6. The pressure sensor online testing tool as claimed in claim 1, characterized in that: A sealing ring is provided between the pressure plate (1) and the PCB test board (4), and the sealing ring is installed on the PCB test board (4).

7. The pressure sensor online testing tool as claimed in claim 6, characterized in that: A first sealing ring installation groove (1-2) is provided on the top of the pressure plate (1), and the upper end of the pressure air channel (1-1) is located in the first sealing ring installation groove (1-2); a second sealing ring installation groove (4-3) is provided on the bottom of the PCB test board (4), and the bottom end of the first vent hole (4-1) is located in the second sealing ring installation groove (4-3); the same sealing ring is installed in the first sealing ring installation groove (1-2) and the second sealing ring installation groove (4-3); a third sealing ring installation groove (2-3) is provided on the upper part of the sensor positioning seat (2), and the third sealing ring installation groove (2-3) is located between the sensor positioning groove (2-1) and the second vent hole (2-2).

8. The pressure sensor online testing tool as claimed in claim 1, characterized in that: The pressure plate (1), the sensor positioning seat (2), the pressure cover (3), and the PCB test board (4) are connected via positioning pins and bolts.

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