Sensor testing device

Abstract

The utility model relates to the technical field of sensors, in particular to a sensor testing device which comprises a box body, a testing cavity is formed in the box body, an opening is formed in the top of the testing cavity, a heating piece is arranged in the testing cavity, a cover plate is arranged on the opening, a plurality of through holes are formed in the cover plate, and the through holes are communicated with the testing cavity. The box body is provided with a through hole, the through hole is communicated with a threaded sleeve, a sensor is provided with a threaded column, the threaded column of the sensor is in threaded fit with the threaded sleeve, and the detection end of the sensor penetrates through the through hole and the threaded sleeve to extend into the box body. The utility model has the effect of higher test efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of sensors, and in particular to a sensor testing device. Background Technology

[0002] A sensor is a detection device that can sense the information being measured and transform that information into an electrical signal or other required form of output according to a certain rule, in order to meet the requirements of information transmission, processing, storage, display, recording, and control. A temperature sensor is a type of sensor that can sense temperature and convert it into a usable output signal. Temperature sensors are the core component of temperature measuring instruments and come in many varieties. They can be broadly classified into two categories based on the measurement method: contact and non-contact. Based on the characteristics of the sensor materials and electronic components, they can be divided into two categories: resistance temperature detectors (RTDs) and thermocouples.

[0003] Currently, temperature sensors need to be tested before leaving the factory. When conducting high-temperature tests, the temperature sensor is usually placed in the testing equipment. However, current testing equipment can only test a single temperature sensor at a time, which is inefficient. Utility Model Content

[0004] To improve testing efficiency, this invention provides a sensor testing device to address the problems of existing technologies.

[0005] The sensor testing device provided by this utility model adopts the following technical solution:

[0006] A sensor testing device includes a housing, a testing chamber inside the housing, an opening at the top of the testing chamber, a heating element inside the testing chamber, a cover plate on the opening, a plurality of through holes on the cover plate, threaded sleeves connected to the through holes, a threaded post on the sensor, the threaded post of the sensor being threadedly engaged with the threaded sleeve, and the detection end of the sensor extending into the housing through the through holes and the threaded sleeve.

[0007] Preferably, the heating element is a plurality of heating tubes arranged in parallel to each other and located at the bottom of the test chamber.

[0008] Preferably, the inner wall of the test chamber is provided with a raised edge, and the four sides of the cover plate are supported on the raised edge.

[0009] Preferably, a support rod is provided at each of the four corners of the cover plate, and when the cover plate is supported on the protruding edge, the bottom end of the support rod abuts against the bottom of the inner wall of the test chamber.

[0010] Preferably, the cover plate is provided with a handle.

[0011] Preferably, both the outer surfaces of the housing and the cover are provided with a heat insulation layer.

[0012] Preferably, the enclosure is provided with a PCB board and multiple sockets, which are electrically connected to the PCB board. Multiple display screens are provided on the outer side of the enclosure and are electrically connected to the PCB board.

[0013] Preferably, a temperature measurement sensor is provided on the housing, the detection end of the temperature measurement sensor extends into the test chamber, and the temperature measurement sensor is electrically connected to the PCB board.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects of a sensor testing device:

[0015] The operator installs multiple sensors onto the threaded sleeves on the cover plate, then closes the cover plate into the opening, plugs the sensor connectors into the sockets, and then powers on the heating element. The heating element generates heat, raising the temperature inside the heating chamber. The temperature sensor being tested transmits the measured temperature signal to the PCB board and displays it on the screen. The tester can easily determine whether the temperature sensor is qualified by observing the numbers on the screen. After the measurement is completed, the tester disconnects the connector from the socket, removes the cover plate, and then places the cover plate with the next assembled temperature sensor on the housing for measurement. The measurement efficiency is high. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is an exploded view of the present invention.

[0018] Figure 3 This is a schematic diagram showing the assembly relationship between the cover plate and the sensor in this utility model.

[0019] In the diagram: 1. Housing; 11. Test chamber; 112. Heating element; 13. Protruding edge; 14. Socket; 15. Display screen; 2. Cover plate; 21. Through hole; 22. Support rod; 23. Handle; 3. Sensor; 31. Threaded post; Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] This utility model discloses a sensor testing device, such as... Figure 1-3 As shown, the device includes a housing 1, within which a test chamber 11 is provided. An opening is formed at the top of the test chamber 11, and a cover plate 2 is provided on the opening, covering the opening. Simultaneously, a raised flange 13 is provided around the inner wall of the test chamber 11, welded to the inner wall. The four sides of the cover plate 2 support the raised flange 13, and the cover plate 2 is attached to the upper surface of the raised flange 13. This provides a certain degree of sealing for the test chamber 11. Furthermore, the cover plate 2 has openings... There are multiple through holes 21. A threaded sleeve is welded on the cover plate 2. The threaded sleeve is aligned with the through hole 21. Some models of sensors 3 are equipped with threaded posts 31 to facilitate installation on the equipment. The threaded posts 31 of the sensor 3 are threadedly engaged with the threaded sleeve. When the operator installs the sensor 3 on the cover plate 2, the sensor 3 is passed through the through hole 21 and the threaded posts 31 of the sensor 3 are threadedly connected to the threaded sleeve. The detection end of the sensor 3 extends into the housing 1 through the through hole 21 and the threaded sleeve.

[0023] Meanwhile, a heating element is installed inside the test chamber 11, specifically multiple electric heating tubes 112 arranged parallel to each other and located at the bottom of the test chamber 11. This allows for more uniform heating of the chamber 1. Additionally, support rods 22 are welded to the four corners of the cover plate 2. When the cover plate 2 rests on the raised edge 13, the bottom end of the support rod 22 abuts against the bottom of the inner wall of the test chamber 11. When the operator closes the cover plate 2 onto the chamber 1, the support rods 22 not only provide support for the cover plate 2, but also allow the operator to place the cover plate 2 on a table after removal, waiting for the cover plate 2 and sensor 3 to cool down before removing the sensor 3 from the cover plate 2, thus preventing burns to the operator. Furthermore, a handle 23 is welded to the cover plate 2, and the handle 23 is fitted with a rubber sleeve or cloth strip or other heat-insulating material, allowing the operator to easily remove the cover plate 2. In addition, both the outer surfaces of the enclosure 1 and the cover plate 2 are provided with a heat insulation layer, which can be a polyurethane layer. The heat insulation layer can play a role in heat insulation and heat preservation, so that heat loss is small.

[0024] In addition, a PCB board is installed on the housing 1, and multiple sockets 14 are fixedly mounted on the housing 1, electrically connected to the PCB board. Multiple displays 15 are installed on the outer side of the housing 1, electrically connected to the PCB board. Sensors 3 are generally connected to wires with plugs at the ends. By plugging the plug of the sensor 3 into a socket 14, the signal from the sensor 3 is transmitted to the PCB board. The temperature signal measured by the sensor 3 is then displayed on the displays 15 for easy observation by the tester. Simultaneously, a temperature measuring sensor 3 is installed on the housing 1, with its probe extending into the test chamber 11. The temperature measuring sensor 3 is electrically connected to the PCB board, allowing for convenient measurement of the temperature within the test chamber 11 and display on the displays 15. This display can then be compared with the temperature measured by the temperature sensor 3 under test, facilitating the tester's determination of the sensor 3's qualification.

[0025] The implementation principle of the sensor testing device in this embodiment is as follows: The operator screws multiple sensors 3 onto the threaded sleeves on the cover plate 2, then closes the cover plate 2 onto the opening, plugs the sensor 3 into the socket 14, and then powers on the heating tube 112. The heating tube 112 generates heat to raise the temperature inside the heating chamber, and the temperature sensor 3 transmits the measured temperature signal to the PCB board and displays it on the display screen 15. The tester can easily judge whether the temperature sensor 3 is qualified by observing the numbers on the display screen 15. After the measurement is completed, the tester unplugs the plug from the socket 14, removes the cover plate 2, and then places the cover plate 2 with the next assembled temperature sensor 3 on the housing 1 for measurement. The testing efficiency is high.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A sensor testing device, characterized in that: The device includes a housing (1), a test chamber (11) is provided inside the housing (1), an opening is provided at the top of the test chamber (11), a heating element is provided inside the test chamber (11), a cover plate (2) is provided on the opening, a plurality of through holes (21) are provided on the cover plate (2), the through holes (21) are connected to a threaded sleeve, a threaded post (31) is provided on the sensor (3), the threaded post (31) of the sensor (3) is threadedly engaged with the threaded sleeve, and the detection end of the sensor (3) extends into the housing (1) through the through holes (21) and the threaded sleeve.

2. The sensor testing device according to claim 1, characterized in that: The heating element is a plurality of electric heating tubes (112), which are arranged in parallel to each other and located at the bottom of the test chamber (11).

3. The sensor testing device according to claim 1, characterized in that: The inner wall of the test chamber (11) is surrounded by a raised edge (13), and the four sides of the cover plate (2) are supported on the raised edge (13).

4. The sensor testing device according to claim 3, characterized in that: The cover plate (2) is provided with support rods (22) at each of the four corners. When the cover plate (2) is supported on the protruding edge (13), the bottom end of the support rod (22) abuts against the bottom of the inner wall of the test chamber (11).

5. The sensor testing device according to claim 1, characterized in that: The cover plate (2) is provided with a handle (23).

6. The sensor testing device according to claim 1, characterized in that: Both the outer surfaces of the box (1) and the cover plate (2) are provided with heat insulation layers.

7. The sensor testing device according to claim 1, characterized in that: The enclosure (1) is provided with a PCB board and a plurality of sockets (14) are provided on the enclosure (1). The sockets (14) are electrically connected to the PCB board. A plurality of display screens (15) are provided on the outer side of the enclosure (1). The display screens (15) are electrically connected to the PCB board.

8. A sensor testing device according to claim 7, characterized in that: A temperature measuring sensor (3) is provided on the housing (1), the probe end of the temperature measuring sensor (3) extends into the test chamber (11), and the temperature measuring sensor (3) is electrically connected to the PCB board.

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