A high and low temperature calibration device for a pressure sensor with a threaded connector

Abstract

This utility model belongs to the technical field of sensor testing equipment, specifically relating to a high and low temperature calibration device for a pressure sensor with a threaded connector. It includes a base plate, with several sensor mounting seats fixedly connected to the top of the base plate. Several air pipe snap-fit ​​connectors are threadedly connected to the outer side of each sensor mounting seat. Air pipes are sequentially connected between adjacent air pipe snap-fit ​​connectors. A sensor under test is detachably threadedly connected to the top of each sensor mounting seat. An aviation plug is provided on the side of each sensor mounting seat, and the aviation plug is vertically fixedly connected to the surface of the base plate. A mounting base is fixedly connected to the edge of the base plate, and an electrical connector is fixedly connected to the bottom of the mounting base. A circuit board is fixedly connected to the bottom of the electrical connector. The advantages of this utility model are that it enables simultaneous calibration and testing of multiple sensors; it also allows for rapid assembly and disassembly of the sensor under test, effectively improving testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sensor testing equipment technology, specifically a high and low temperature calibration device for a pressure sensor used in threaded joints. Background Technology

[0002] High and low temperature calibration devices for pressure sensors are core equipment for ensuring the measurement accuracy and stability of sensors under extreme temperature conditions, and are widely used in aerospace, automotive, energy, and medical fields. Their core function is to establish a mathematical model of the sensor output signal and actual pressure value by simulating a wide temperature range from low to high temperatures, combined with precise pressure loading, and to correct for temperature drift and nonlinear errors. The device mainly consists of a high and low temperature environment chamber, a pressure loading system, a threaded connector adapter module, and a data acquisition system.

[0003] Existing high and low temperature calibration devices for pressure sensors are inconvenient for simultaneously calibrating and testing multiple sensors when measuring them, resulting in low efficiency; moreover, their complex structure makes it difficult to quickly install the sensors. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing high and low temperature calibration devices for pressure sensors cannot calibrate and test multiple sensors simultaneously, resulting in low efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high and low temperature calibration device for a pressure sensor with a threaded connector includes a base plate. Several sensor mounting seats are fixedly connected to the top of the base plate. Several air tube snap-fit ​​connectors are threadedly connected to the outer side of each sensor mounting seat. Air tubes are sequentially connected between adjacent air tube snap-fit ​​connectors. A sensor to be tested is detachably threadedly connected to the top of each sensor mounting seat. An aviation plug is provided on the side of each sensor mounting seat. The aviation plug is vertically fixedly connected to the surface of the base plate. A mounting base is fixedly connected to the edge of the base plate. An electrical connector is fixedly connected to the bottom of the mounting base. A circuit board is fixedly connected to the bottom of the electrical connector. Several pins are fixedly connected between the port of the electrical connector and the circuit board. A calibration platform data acquisition interface is detachably connected to the outer side of the port of the electrical connector.

[0007] Furthermore, the bottom of the sensor mounting base is connected to the base plate by bolts and threads, the connection between the bottom of the sensor mounting base and the base plate is shaped like a polygonal prism, and a sealing ring is provided at the connection between the top of the sensor mounting base and the sensor under test.

[0008] Furthermore, an air hole is provided at the inner axis of the sensor mounting base, the sealing ring is coaxially arranged with the air hole, the bottom end of the air hole is connected to the air pipe, and an air inlet is provided on the side of the sensor mounting base located in the middle of the edge of the base plate.

[0009] Furthermore, a transfer connector is provided for the detachable connection between the top of the aviation plug and the top of the adjacent sensor under test.

[0010] Furthermore, the surface of the base plate is provided with several wire-tying holes, and the bottom of the aviation plug is electrically connected to the circuit board.

[0011] Furthermore, a pair of handles are symmetrically fixedly connected to the top two sides of the base plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model provides a high and low temperature calibration device for pressure sensors with threaded joints. By setting up several sensor fixing seats, air pipe buckle connectors and air pipes, it can realize the synchronous calibration and testing of multiple sensors; at the same time, it can realize the rapid assembly and disassembly of the sensor under test, effectively improving the testing efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a high and low temperature calibration device for a pressure sensor used in a threaded joint, according to the present invention.

[0015] Figure 2 This is a top view schematic diagram of a high and low temperature calibration device for a pressure sensor used in a threaded joint, according to the present invention.

[0016] Figure 3 This is a cross-sectional view of the sensor mounting base of a pressure sensor high and low temperature calibration device for a threaded joint according to the present invention.

[0017] Figure 4 This is a bottom view schematic diagram of a high and low temperature calibration device for a pressure sensor used in a threaded joint according to the present invention.

[0018] In the diagram: 1. Base plate; 2. Sensor mounting base; 201. Air vent; 3. Air hose clip connector; 4. Air hose; 5. Aviation plug; 6. Sensor under test; 7. Mounting base; 8. Electrical connector; 801. Pin; 9. Air inlet; 10. Handle; 11. Sealing ring; 12. Bolt; 13. Circuit board; 14. Cable tie hole. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4 The high and low temperature calibration device for a pressure sensor with a threaded connector in this embodiment includes a base plate 1. A plurality of sensor mounting seats 2 are fixedly connected to the top of the base plate 1. A plurality of air pipe clamping connectors 3 are threadedly connected to the outer side of the sensor mounting seats 2. Air pipes 4 are sequentially connected between adjacent air pipe clamping connectors 3. A sensor to be tested 6 is detachably threadedly connected to the top of the sensor mounting seat 2. An aviation plug 5 is provided on the side of each sensor mounting seat 2. The aviation plug 5 is vertically fixedly connected to the surface of the base plate 1. A mounting base 7 is fixedly connected to the edge of the base plate 1. An electrical connector 8 is fixedly connected to the bottom of the mounting base 7. The bottom of the electrical connector 8 is fixedly... A circuit board 13 is connected, and several pins 801 are fixedly connected between the port of the electrical connector 8 and the circuit board 13. A calibration table data acquisition interface is detachably connected to the outside of the port of the electrical connector 8. A sealing ring 11 is provided at the connection between the top of the sensor mounting base 2 and the sensor under test 6. An air hole 201 is opened at the inner axis of the sensor mounting base 2. The sealing ring 11 and the air hole 201 are coaxially arranged. The bottom end of the air hole 201 is connected to the air pipe 4. An air inlet 9 is opened on the side of the sensor mounting base 2 located in the middle of the edge of the base plate 1. A transfer connector is detachably connected between the top of the aviation plug 5 and the top of the adjacent sensor under test 6. During testing, the sensor under test (SUT) 6 is threaded onto the top of the sensor mounting base 2. The sealing ring 11 improves the seal between SUT 6 and the sensor mounting base 2, enhancing testing accuracy. Then, the top of SUT 6 is connected to the top of the adjacent aviation connector 5 via a transfer connector. The calibration platform's data acquisition interface is connected to the port of the electrical connector 8. The base plate 2, filled with SUT 6, is then placed in a temperature chamber. Once the chamber reaches a certain temperature, the calibration platform injects pressurized gas into the sensor mounting base 2 through the air inlet 9. This gas flows sequentially into all sensor mounting bases 2 via the air pipe 4. Pressure is applied to the bottom of SUT 6, causing it to output a signal to the circuit board 13. The calibration platform receives the signal, thus calibrating and testing SUT 6. Through these steps, simultaneous calibration and testing of multiple SUT 6 can be achieved, along with rapid assembly and disassembly of the SUT 6, effectively improving testing efficiency.

[0021] The bottom of the sensor mounting base 2 is connected to the base plate 1 by bolts 12. The connection between the bottom of the sensor mounting base 2 and the base plate 1 is a polygonal prism. By setting the bottom of the sensor mounting base 2 to a polygonal prism shape, the sensor mounting base 2 can be anti-rotation and self-locking, which facilitates the disassembly and assembly of the sensor 6 under test.

[0022] The base plate 1 has several cable tie holes 14 on its surface, and the bottom of the aviation connector 5 is electrically connected to the circuit board 13. By providing cable tie holes 14, the connecting wires between the bottom of the aviation connector 5 and the circuit board 13 can be bundled and fixed, preventing multiple sets of connecting wires from getting tangled together and affecting the test results.

[0023] A pair of handles 10 are symmetrically fixedly connected to the top two sides of the base plate 1. The handles 10 facilitate the handling of the base plate 1.

[0024] Working principle: During testing, the sensor under test (SUT) 6 is threaded onto the top of the sensor mounting base 2. The sealing ring 11 improves the seal between SUT 6 and the mounting base 2, enhancing testing accuracy. Then, the top of SUT 6 is connected to the top of the adjacent aviation connector 5 via a transfer connector. The calibration platform's data acquisition interface is connected to the port of the electrical connector 8. The base plate 2, filled with SUT 6, is then placed in a temperature chamber. Once the chamber reaches a certain temperature, the calibration platform injects pressurized gas into the sensor mounting base 2 through the air inlet 9. This gas flows sequentially into all sensor mounting bases 2 via the air pipe 4. Pressure is applied to the bottom of SUT 6, causing it to output a signal to the circuit board 13. The calibration platform receives the signal, thus calibrating and testing SUT 6. Through these steps, simultaneous calibration and testing of multiple SUT 6 can be achieved, along with rapid assembly and disassembly of the SUT 6, effectively improving testing efficiency.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure sensor high-low temperature calibration device for a threaded joint, characterized by: The system includes a base plate (1), on which a number of sensor mounting bases (2) are fixedly connected. A number of air pipe snap-fit ​​connectors (3) are threadedly connected to the outer side of the sensor mounting bases (2). Air pipes (4) are sequentially connected between adjacent air pipe snap-fit ​​connectors (3). A sensor to be tested (6) is detachably threadedly connected to the top of the sensor mounting bases (2). An aviation plug (5) is provided on the side of each sensor mounting base (2). The aviation plug (5) is vertically fixedly connected to the surface of the base plate (1). A mounting base (7) is fixedly connected to the edge of the base plate (1). An electrical connector (8) is fixedly connected to the bottom of the mounting base (7). A circuit board (13) is fixedly connected to the bottom of the electrical connector (8). A number of pins (801) are fixedly connected between the port of the electrical connector (8) and the circuit board (13). A calibration table data acquisition interface is detachably connected to the outer side of the port of the electrical connector (8).

2. The pressure sensor high-low temperature calibration device for a threaded joint according to claim 1, characterized in that: The bottom of the sensor mounting base (2) is connected to the base plate (1) by bolts (12). The connection between the bottom of the sensor mounting base (2) and the base plate (1) is a polygonal prism. A sealing ring (11) is provided at the connection between the top of the sensor mounting base (2) and the sensor to be tested (6).

3. The pressure sensor high-low temperature calibration device for a threaded joint according to claim 2, characterized in that: An air hole (201) is provided at the inner axis of the sensor mounting base (2). The sealing ring (11) is coaxially arranged with the air hole (201). The bottom end of the air hole (201) is connected to the air pipe (4). An air inlet (9) is provided on the side of the sensor mounting base (2) located in the middle of the edge of the base plate (1).

4. The pressure sensor high-low temperature calibration device for a threaded joint of claim 1, wherein: The top of the aviation plug (5) is detachably connected to the top of the adjacent sensor under test (6) via a transfer connector.

5. The pressure sensor high-low temperature calibration device for a threaded joint of claim 1, wherein: The base plate (1) has several wire-tying holes (14) on its surface, and the bottom of the aviation plug (5) is electrically connected to the circuit board (13).

6. The pressure sensor high-low temperature calibration device for a threaded joint of claim 1, wherein: A pair of handles (10) are symmetrically fixedly connected to the top two sides of the base plate (1).

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