Sensor testing tool

Abstract

The utility model discloses a sensor testing tool which comprises a base and a sealing end cover, a testing machine shell is arranged on the upper side of the base, the top in the testing machine shell is connected with a gas booster pump through a pipeline, a standard air pressure sensor and a temperature sensor are arranged on the inner wall of the testing machine shell, and an electric heating pipe is arranged in a first groove in the inner wall of the testing machine shell. The electric heating tube is arranged in the first groove in the inner wall of the testing machine shell, so that the interior of the testing machine shell can be heated, the temperature sensor and the temperature controller which are arranged on the inner wall of the testing machine shell are used for accurately controlling the temperature, and the temperature of the testing machine shell can be accurately controlled. Therefore, the test processing of the barometric sensor under different temperature conditions is met, and the test precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor test technical field, concretely is a kind of sensor test tool. BACKGROUND

[0002] The air pressure sensor is a kind of electronic device that can detect the change of external air pressure, and the air pressure sensor can convert the detected air pressure change into an electrical signal after the change of external air pressure, but the existing air pressure sensor needs to be tested for testing accuracy after production, to screen unqualified products, but the existing air pressure sensor detection equipment usually has some shortcomings when in use, the traditional air pressure sensor is usually complex in structure, and the operation is complex during testing, which greatly affects the testing efficiency.

[0003] In the prior art, the air pressure sensor testing tool with application number 202222678889.1 includes a base, a fixed seat is fixedly arranged at the upper end of the base, a test cylinder is fixedly arranged at the upper end of the fixed seat, a support rod is fixedly arranged at the position of the upper end of the base close to the fixed seat, a top plate is fixedly arranged at the upper end of the support rod, a hydraulic cylinder is fixedly arranged at the upper end of the top plate, and a connecting piece is fixedly connected to the output end of the hydraulic cylinder. In the utility model, the air pressure sensor testing tool is provided with a test structure, which greatly improves the testing efficiency of the device for sensors, and the testing accuracy is maintained. The adjustable test structure is provided, so that the testing structure of the device can be adjusted according to the size of the sensor to adjust the corresponding size of the test structure, so that the applicability of the device is wider, and it is worth promoting. However, it is difficult to meet the air pressure sensor testing under different temperature conditions, thereby affecting the accuracy of the test. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a kind of sensor test tool to solve the problem that it is difficult to meet the air pressure sensor testing under different temperature conditions in prior art, thereby affecting the accuracy of the test.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of sensor test tool, including base and sealing end cover, the base upper side is equipped with test machine shell, the test machine shell is connected with gas booster pump in top by pipeline, the test machine shell inner wall is equipped with standard air pressure sensor and temperature sensor, the first recess of the test machine shell inner wall is equipped with electric heating tube, the base upper side is equipped with stand, and sealing end cover is set in test machine shell side by first air cylinder.

[0006] Further, the test machine shell is set as hollow cylinder, and the test machine shell is transversely arranged on the upper side of the base.

[0007] Further, the sealing end cover is coaxial with the test shell, and a sealing gasket is arranged at one end of the sealing end cover.

[0008] Further, the gas booster pump is fixedly arranged on the outer wall of the test shell, and an electric control valve is arranged on the pipeline.

[0009] Further, the test shell is provided with a pushing plate through a second cylinder, and the pushing plate is slidingly arranged on the inner wall of the test shell.

[0010] Further, the electric heating pipe and the first groove are arranged at multiple equal angles on the upper part of the test shell, and the electric heating pipe is embedded in the first groove.

[0011] Further, the standard gas pressure sensor and the temperature sensor are arranged in the second groove in the test shell, and the standard gas pressure sensor and the temperature sensor are electrically connected with the controller in the PLC control cabinet on the base.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The first groove in the inner wall of the test shell is provided with an electric heating pipe, the electric heating pipe and the first groove are arranged at multiple equal angles on the upper part of the test shell, and the electric heating pipe is embedded in the first groove, so that the test shell can be heated, the temperature sensor and the temperature controller arranged on the inner wall of the test shell are used for accurate temperature control, the gas pressure sensor test processing under different temperature conditions is met, the test precision is improved, and the test operation is convenient and fast.

[0014] 2. The test shell is provided with a pushing plate through a second cylinder, and the pushing plate is slidingly arranged on the inner wall of the test shell, so that the pushing plate is driven to move horizontally by the second cylinder, the sensor placed in the test shell and tested is pushed out of the detection chamber, and the discharging is convenient and fast. DETAILED DESCRIPTION

[0015] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation on the utility model. In the drawings:

[0016] Figure 1 It is the first view structure schematic view of the utility model;

[0017] Figure 2 It is the second view structure schematic view of the utility model;

[0018] Figure 3 It is the test shell sectional view of the utility model.

[0019] In the figure: 1, base; 2, stand; 3, test machine shell; 4, second cylinder; 5, sealing end cover; 6, first cylinder; 7, sealing gasket; 8, PLC control cabinet; 9, gas booster pump; 10, pipeline; 11, electric control valve; 12, pushing plate; 13, standard gas pressure sensor; 14, temperature sensor; 15, first groove; 16, electric heating tube; 17, second groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 In the embodiments of the utility model, a sensor test tool comprises a base 1 and a sealing end cover 5, the upper side of the base 1 is provided with a test machine shell 3, a gas booster pump 9 is connected to the top of the test machine shell 3 through a pipeline 10, the gas booster pump 9 is fixedly arranged on the outer wall of the test machine shell 3, and the pipeline 10 is provided with an electric control valve 11, so that the test machine shell 3 can be filled with gas for pressure boosting, the upper side of the base 1 is provided with a stand 2, and the sealing end cover 5 is arranged beside the test machine shell 3 through a first cylinder 6, the test machine shell 3 is arranged in a hollow cylindrical shape, the test machine shell 3 is arranged horizontally on the upper side of the base 1, the sealing end cover 5 is coaxially arranged with the test machine shell 3, one end of the sealing end cover 5 is provided with a sealing gasket 7, the inner wall of the test machine shell 3 is provided with a standard gas pressure sensor 13, the controller in the PLC control cabinet 8 on the base 1 is electrically connected to the standard gas pressure sensor 13, a certain amount of gas pressure is injected into the detection chamber of the test machine shell 3 through the gas booster pump 9 and the pipeline 10, the values of the standard gas pressure sensor 13 and the test gas pressure sensor are observed, when the value of the test gas pressure sensor changes within a reasonable range compared with the value of the standard gas pressure sensor 13, it is indicated that the test gas pressure sensor is qualified, otherwise, it is unqualified, and the test is convenient and fast.

[0022] As Figure 1 and Figure 3As shown in the figure, in order to meet the test of the air pressure sensor under different temperature conditions, the temperature sensor 14 is arranged on the inner wall of the test shell 3, the electric heating tube 16 is arranged in the first groove 15 on the inner wall of the test shell 3, one end of the electric heating tube 16 is provided with a temperature controller, the standard air pressure sensor 13 and the temperature sensor 14 are arranged in the second groove 17 in the test shell 3, and the temperature sensor 14 and the temperature controller are electrically connected with the controller in the PLC control cabinet 8. The electric heating tube 16 can heat the test shell 3, and the temperature sensor 14 and the temperature controller arranged on the inner wall of the test shell 3 can accurately control the temperature, so that the test of the air pressure sensor under different temperature conditions is met, and the test accuracy is improved.

[0023] As shown in the figure, Figure 2 and Figure 3 As shown in the figure, in order to facilitate the unloading of the tested sensor, the test shell 3 is provided with a pushing plate 12 through the second cylinder 4, and the pushing plate 12 is slidably arranged on the inner wall of the test shell 3, so that the pushing plate 12 is driven to move transversely by the second cylinder 4, and the tested sensor placed in the test shell 3 can be pushed out of the detection chamber, so that the unloading is convenient and fast.

[0024] As shown in the figure, Figure 2 and Figure 3 As shown in the figure, in order to facilitate uniform heating of the test shell 3, a plurality of electric heating tubes 16 are arranged at equal angles on the upper part of the test shell 3, and the electric heating tubes 16 are embedded in the first grooves 15, so that the test shell 3 can be uniformly heated, and the test accuracy is improved.

[0025] The working principle and use process of the utility model are as follows: when in use, the air pressure sensor to be detected is placed in the test shell 3, the sealing end cover 5 is driven to move transversely by the first cylinder 6 and is pressed on the outside of the test shell 3, the detection chamber is sealed, then a certain amount of air pressure is injected into the detection chamber in the test shell 3 through the gas booster pump 9 and the pipeline 10, the values of the standard air pressure sensor 13 and the test air pressure sensor are observed, and when the value of the test air pressure sensor is within a reasonable range compared with the value of the standard air pressure sensor 13, it is indicated that the test air pressure sensor is qualified, otherwise it is unqualified, and the test operation is convenient and fast.

[0026] Finally, it should be pointed out that: the above only for preferred embodiment of the utility model has described in detail to the utility model although with reference to the foregoing embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A sensor test tool comprising a base (1) and a sealed end cap (5) characterised in that: The bottom (1) upside is equipped with test machine shell (3), the test machine shell (3) inside top is connected with gas booster pump (9) through pipeline (10), the test machine shell (3) inner wall is equipped with standard gas pressure inductor (13) and temperature sensor (14), the first recess (15) of test machine shell (3) inner wall is equipped with electric heating tube (16), the bottom (1) upside is equipped with stand (2), and sealing end cover (5) is set through first cylinder (6) at test machine shell (3) side.

2. The sensor test fixture of claim 1, wherein: The test machine shell (3) is set to hollow cylinder, and the test machine shell (3) is set on the upside of the base (1).

3. A sensor test fixture according to claim 2, wherein: The sealing end cover (5) is coaxially arranged with the test machine shell (3), and the sealing end cover (5) is provided with a sealing gasket (7) at one end.

4. The sensor test fixture of claim 1, wherein: The gas booster pump (9) is fixedly arranged on the outer wall of the test machine shell (3), and the pipeline (10) is provided with an electric control valve (11).

5. The sensor test fixture of claim 1, wherein: The test machine shell (3) is provided with a push plate (12) through a second cylinder (4), and the push plate (12) is slidingly arranged with the inner wall of the test machine shell (3).

6. The sensor test fixture of claim 1, wherein: The electric heating tube (16) and the first recess (15) are provided with a plurality of equal angles on the upper part of the test machine shell (3), and the electric heating tube (16) is embedded in the first recess (15).

7. The sensor test fixture of claim 1, wherein: The standard gas pressure inductor (13) and the temperature sensor (14) are arranged in the second recess (17) in the test machine shell (3), and the standard gas pressure inductor (13) and the temperature sensor (14) are electrically connected with the controller in the PLC control cabinet (8) on the base (1).

Images