Pressure sensor testing device

Abstract

The utility model discloses a pressure sensor testing device, and relates to the technical field of pressure sensors, in particular to a pressure sensor testing device, which comprises a base, a control box and a plurality of pressure testing assemblies. The control assembly controls the cylinder output shaft to extend out through the current pressure converter, the current pressure converter is used for converting a current or voltage signal into a linear proportion air pressure signal to be output and used for controlling the output pressure of the cylinder, the output pressure value of the cylinder is more accurate, and the cylinder output shaft pushes and presses the pressure sensor to be tested. After the to-be-detected pressure sensor detects the pressure applied by the cylinder, related pressure information is transmitted to the control assembly, the control assembly compares the pressure information transmitted by the to-be-detected pressure sensor with the pressure information output by the cylinder, and the smaller the pressure difference is, the more accurate the sensitivity of the to-be-detected pressure sensor is. When the pressure difference is smaller than the qualified standard value, the to-be-tested pressure sensor is proved to be qualified, and the purpose of effectively applying pressure to the to-be-tested pressure sensor is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, in particular to a pressure sensor testing device. Background Art

[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to certain rules. During the pressure sensor testing process, it is necessary to test the pressure sensitivity of the pressure sensor to see if it is qualified. When the pressure detected by the pressure sensor is consistent with the output pressure signal, it means that the pressure sensor is qualified; when there is a difference between the pressure detected by the pressure sensor and the output pressure signal, it means that the pressure sensor has a low pressure sensitivity and the pressure sensor is unqualified.

[0003] In the published Chinese patent application, publication number: CN214748626U, patent name: A fully automatic pressure sensor testing device, although the operation process of the prior art is convenient and fast, after the PLC control system parameters are set, the detection process is automatically controlled, which is efficient and intelligent, and the report and certificate are automatically judged and generated, which is accurate and reliable. The prior art uses a pressure test bench to apply pressure to the pressure sensor to be tested, but the pressure test bench in the prior art lacks specific structural features, and it cannot effectively apply pressure to the pressure sensor to be tested.

[0004] In summary, the problem existing in the prior art is that the pressure output component cannot effectively apply pressure to the pressure sensor to be tested. In order to solve the problem existing in the prior art, the present application is proposed to solve the problem. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a pressure sensor testing device, which solves the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a pressure sensor testing device, which is used to perform pressure sensitivity test on the pressure sensor to be tested, including a base, a control box and multiple pressure measuring components, the control box is fixedly installed on the upper surface of the base, and a control component is arranged in the control box; the control component is controlled and connected with each pressure measuring component; a support plate and a positioning plate are respectively fixedly connected to the base, and each of the pressure measuring components includes a cylinder, a wire clamp, a fixing clamp, a proximity sensor and an indicator light; the cylinder is fixedly installed on the support plate, and the output shaft end of the cylinder passes through the support plate, and a rubber pressure head is fixedly installed on the end head of the output shaft of the cylinder; the fixing clamp is fixedly installed on a side wall of the positioning plate, and the proximity sensor is fixedly installed on the positioning plate and is located below the fixing clamp; the wire clamp is fixedly installed on a side edge of the base.

[0009] Optionally, the control component includes a control panel, a display screen and multiple current-pressure converters. The control panel is electrically connected to the display screen, each proximity sensor and each current-pressure converter through wires, and a current-pressure converter is electrically connected to a cylinder in a pressure measurement component through a wire.

[0010] Optionally, the wire clamp includes a mounting block, a spring, and two sliding blocks, the two sliding blocks are slidably set on the mounting block, the spring is fixedly installed between the two sliding blocks, and first wires are set on both inner side walls of the mounting block, and the free ends of the two first wires are electrically connected to the control board.

[0011] Optionally, the fixing clip is made of plastic, rubber or a mixture of the two.

[0012] Optionally, each indicator light in the pressure measurement assembly is electrically connected to the control board via a wire.

[0013] Optionally, support columns are fixedly connected to the lower surfaces of both ends of the support plate, and the lower ends of the support columns are fixedly connected to the base.

[0014] Optionally, the control panel adopts one of an editable logic controller and an industrial computer.

[0015] (III) Beneficial effects

[0016] The utility model provides a pressure sensor testing device, which has the following beneficial effects:

[0017] The pressure sensor testing device has the effect of effectively testing the pressure sensor to be tested through the coordinated arrangement of the control component and the pressure measuring component. The control component controls the extension of the cylinder output shaft through the current-pressure converter. The current-pressure converter is used to convert the current or voltage signal into a linearly proportional air pressure signal output, which is used to control the output pressure of the cylinder. The output pressure value of the cylinder is more accurate. The cylinder output shaft pushes the pressure sensor to be tested. After detecting the pressure applied by the cylinder, the pressure sensor to be tested transmits the relevant pressure information to the control component. The control component compares the pressure information transmitted by the pressure sensor to be tested with the pressure information output by the cylinder. The smaller the pressure difference, the more accurate the sensitivity of the pressure sensor to be tested. When the pressure difference is less than the qualified standard value, it is proved that the pressure sensor to be tested is qualified, thereby achieving the purpose of effectively applying pressure to the pressure sensor to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the pressure sensor testing device of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the pressure sensor testing device of the utility model (without the pressure sensor to be tested);

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the wire clamp of the pressure sensor test device of the utility model;

[0022] Figure 4 The utility model is a schematic cross-sectional structural diagram of the wire clamp of the pressure sensor testing device.

[0023] In the figure: 1. base; 2. control box; 3. display screen; 4. positioning plate; 5. support column; 6. support plate; 7. cylinder; 8. pressure sensor to be tested; 9. wire clamp; 901. mounting block; 902. sliding block; 903. first wire; 904. spring; 10. indicator light; 11. fixing clamp; 12. proximity sensor. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0026] See also Figures 1 to 4 The utility model provides a technical solution: a pressure sensor testing device, which is used to perform a pressure sensitivity test on a pressure sensor 8 to be tested. The pressure sensor testing device includes a base 1, a control box 2 and a plurality of pressure measuring components. The control box 2 is fixedly mounted on the upper surface of the base 1, and a control component is arranged in the control box 2. The control component is controlled and connected with each pressure measuring component. The control component includes a control panel, a display screen 3 and a plurality of current-pressure converters. The control panel is electrically connected to the display screen 3, each proximity sensor 12 and each current-pressure converter through wires, and a current-pressure converter is electrically connected to a cylinder 7 in a pressure measuring component through a wire.

[0027] In the specific implementation, the base 1 is installed on the counter of the pressure sensor test line. Each pressure test component is used to apply pressure to each pressure sensor 8 to be tested and to fix each pressure sensor 8 to be tested. The current-pressure converter adopts the electrical converter EP5500.

[0028] The base 1 is fixedly connected to a support plate 6 and a positioning plate 4, respectively. Each pressure measuring assembly includes a cylinder 7, a wire clamp 9, a fixing clamp 11, a proximity sensor 12 and an indicator light 10. The cylinder 7 is fixedly mounted on the support plate 6, and the output shaft end of the cylinder 7 passes through the support plate 6. A rubber pressure head is fixedly mounted on the end of the output shaft of the cylinder 7. The fixing clamp 11 is fixedly mounted on a side wall of the positioning plate 4, and the proximity sensor 12 is fixedly mounted on the positioning plate 4 and is located below the fixing clamp 11. The wire clamp 9 is fixedly mounted on a side edge of the base 1.

[0029] Among them, the support plate 6 is used to support and fix each cylinder 7 and indicator light 10. Each cylinder 7 is also a pressure source for applying pressure. The positioning plate 4 is used to support and fix each fixing clamp 11 and proximity sensor 12. The fixing clamp 11 is used to clamp and fix the pressure sensor 8 to be tested at the position to be tested. The proximity sensor 12 is used to detect whether the pressure sensor 8 to be tested is located at the position to be tested. The electrical converter EP5500 is used to convert the current or voltage signal into a linear proportional air pressure signal output, which is used to control the output pressure of the cylinder 7. The wire clamp 9 is used to clamp the wire end of the pressure sensor 8 to be tested.

[0030] Specifically, the wire clamp 9 includes a mounting block 901, a spring 904, and two sliding blocks 902. The two sliding blocks 902 are slidably set on the mounting block 901, and the spring 904 is fixedly installed between the two sliding blocks 902. First wires 903 are set on both inner side walls of the mounting block 901, and the free ends of the two first wires 903 are electrically connected to the control board.

[0031] The wire clamp 9 is used to electrically connect the wire ends of the pressure sensor 8 to be tested with the control board. During implementation, the staff inserts the wire ends of the pressure sensor 8 to be tested into the mounting block 901, and the two sliding blocks 902 press and fix the wire ends of the pressure sensor 8 to be tested under the elastic force of the spring 904, so that the wire ends of the pressure sensor 8 to be tested are electrically connected to the first wire 903, thereby realizing the electrical connection between the wire ends of the pressure sensor 8 to be tested and the control board. The wire clamp 9 is used to clamp the wire ends of the pressure sensor 8 to be tested and electrically connect the pressure sensor 8 to be tested with the control board.

[0032] Specifically, the fixing clip 11 is made of plastic, rubber or a mixture of the two.

[0033] The fixing clamp 11 is used to clamp and fix the pressure sensor 8 to be tested.

[0034] Specifically, the indicator light 10 in each pressure measurement assembly is electrically connected to the control board through a wire.

[0035] The indicator light 10 is used to indicate whether the pressure sensor 8 to be tested is qualified by lighting up.

[0036] Specifically, the lower surfaces of both ends of the support plate 6 are fixedly connected with support columns 5 , and the lower ends of the support columns 5 are fixedly connected to the base 1 .

[0037] The two support columns 5 are used to support and fix the support plate 6 so that the support plate 6 is fixedly connected to the base 1 .

[0038] Specifically, the control panel adopts one of an editable logic controller and an industrial computer.

[0039] The control board is equipped with a logic control program and a timing control program to meet the program control needs of the device. The pressure sensor test device shown in this application also includes other parts and electrical components to meet the control needs of the entire device and normal operation.

[0040] When in use, the staff places each pressure sensor 8 to be tested at each position to be tested, clamps the pressure sensor 8 to be tested on the fixing clamp 11, and at the same time, clamps the wire end of the pressure sensor 8 to be tested in the wire clamp 9. The fixing clamp 11 clamps and fixes the pressure sensor 8 to be tested. The proximity sensor 12 detects the existence of the pressure sensor 8 to be tested, and the proximity sensor 12 sends a corresponding signal to the control board. The control board responds to the proximity sensor 12, and the control board controls the start cylinder 7 through the current-pressure converter, and the output shaft of the cylinder 7 extends, and the output shaft of the cylinder 7 applies a quantitative pressure A to the pressure sensor 8 to be tested.

[0041] The pressure sensor 8 to be tested monitors the pressure applied by the cylinder 7 and obtains a pressure value B. The pressure sensor 8 to be tested sends a feedback signal to the control board according to the pressure value B. The control board decodes the feedback signal and obtains the pressure value B detected by the pressure sensor 8 to be tested.

[0042] The control board compares the pressure value B with the pressure value A to obtain the pressure value difference. The smaller the pressure difference, the more accurate the sensitivity of the pressure sensor 8 to be tested. When the pressure difference is less than the qualified standard value, it proves that the pressure sensor 8 to be tested is qualified, achieving the purpose of effectively applying pressure to the pressure sensor 8 to be tested.

[0043] When it is detected that the pressure difference is large and exceeds the qualified standard value, the control panel controls the indicator light 10 corresponding to the pressure sensor 8 to be tested to light up. After seeing the indicator light 10 is on, the staff will remove and eliminate the corresponding pressure sensor 8 to be tested, thereby completing the test of the pressure sensor.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure sensor testing device, used for testing the pressure sensitivity of a pressure sensor (8) to be tested, characterized in that: It comprises a base (1), a control box (2) and a plurality of pressure measuring components, wherein the control box (2) is fixedly mounted on the upper surface of the base (1), and a control component is arranged inside the control box (2); the control component is control-connected to each pressure measuring component; The base (1) is respectively fixedly connected with a support plate (6) and a positioning plate (4), and each of the pressure measurement components comprises a cylinder (7), a wire clamp (9), a fixing clamp (11), a proximity sensor (12) and an indicator light (10); The cylinder (7) is fixedly mounted on the support plate (6), and the output shaft end of the cylinder (7) passes through the support plate (6), and a rubber pressure head is fixedly mounted on the end of the output shaft of the cylinder (7); the fixing clamp (11) is fixedly mounted on a side wall of the positioning plate (4), and the proximity sensor (12) is fixedly mounted on the positioning plate (4) and is located below the fixing clamp (11); the wire clamp (9) is fixedly mounted on a side edge of the base (1).

2. The pressure sensor testing device according to claim 1, characterized in that: The control component comprises a control panel, a display screen (3) and a plurality of current-pressure converters. The control panel is electrically connected to the display screen (3), each proximity sensor (12) and each current-pressure converter via wires. A current-pressure converter is electrically connected to a cylinder (7) in a pressure measurement component via wires.

3. The pressure sensor testing device according to claim 2, characterized in that: The wire clamp (9) comprises a mounting block (901), a spring (904), and two sliding blocks (902); the two sliding blocks (902) are slidably arranged on the mounting block (901); the spring (904) is fixedly installed between the two sliding blocks (902); first wires (903) are arranged on both inner side walls of the mounting block (901); and the free ends of the two first wires (903) are electrically connected to a control board.

4. The pressure sensor testing device according to claim 1, characterized in that: The fixing clip (11) is made of plastic, rubber or a mixture of the two.

5. The pressure sensor testing device according to claim 2, characterized in that: The indicator light (10) in each of the pressure measurement components is electrically connected to the control panel via a wire.

6. The pressure sensor testing device according to claim 1, characterized in that: The lower surfaces of both ends of the support plate (6) are fixedly connected to support columns (5), and the lower ends of the support columns (5) are fixedly connected to the base (1).

7. The pressure sensor testing device according to claim 2, characterized in that: The control panel adopts one of an editable logic controller and an industrial computer.

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