Batch calibration testing device of pressure sensor and production line of pressure sensor

Abstract

The invention provides a batch calibration testing device of pressure sensors and a production line of the pressure sensors, and belongs to the field of pressure detection.The batch calibration testing device of the pressure sensors comprises a calibration assembly and an installation module.The calibration assembly comprises a calibration table and a plurality of first data processing boards arranged on the calibration table; a first detection pipeline is arranged in the calibration table, the plate surface of each first data processing plate is attached to the upper table surface of the calibration table, and the first data processing plates are uniformly arranged on the calibration table; the installation modules are used for installing the multiple sensors and collecting information of the sensors, the installation modules can form communication between the first detection pipeline and the sensors and can form electric connection between the sensors and the first data processing board, the number of the installation modules is multiple, and all the installation modules are connected to the calibration table in a sealed mode. Compared with the prior art, the technical problem that the calibration efficiency of existing calibration equipment on the pressure sensor cannot meet the production requirement is solved.

Description

Technical Field

[0001] The present invention belongs to the field of pressure testing, and more specifically, relates to a batch calibration test device for pressure sensors. The present invention also relates to a production line for pressure sensors, and the production line for pressure sensors is equipped with the batch calibration test device for pressure sensors. 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. Pressure sensors are usually composed of pressure sensitive elements and signal processing units. According to different test pressure types, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. Pressure sensors are the most commonly used sensors in industrial practice. They are widely used in various industrial automatic control environments, involving many industries such as water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemicals, oil wells, electricity, ships, machine tools, pipelines, etc.

[0003] With the rapid development of social economy, cars have entered thousands of households as the most convenient means of transportation. In 2023, the sales volume of passenger cars reached 23 million, and the market size of automotive air-conditioning pressure sensors reached 500 million, and it is still growing steadily, with broad market prospects. Pressure sensors need to be calibrated and compensated in the full temperature range due to their temperature drift characteristics and output characteristics. Among them, calibration mainly refers to the use of standard measuring instruments to detect whether the accuracy (precision) of the instruments used meets the standards. Generally, it is mostly used for instruments with higher precision. Calibration can also be considered as calibration. Therefore, it can also be considered that calibration includes the above two meanings. In the traditional sensor calibration test process, a targeted detection tooling is generally set according to the pressure sensor to be tested. The detection tooling can generally install a single pressure sensor and collect the electrical signal of a single pressure sensor during the pressure test process, and then complete the calibration of a single pressure sensor according to the pressure data and electrical signals provided by the detection tooling. Due to the detection of sensors by the above-mentioned calibration tooling, the existing calibration test system has low calibration and testing efficiency due to the small number of single calibrations, long insulation time, and inconvenient installation and disassembly. To address this issue, some manufacturers have improved the calibration efficiency of the sensors by integrating multiple pressure sensors on a testing board. However, the existing testing methods still have the technical problem of insufficient testing efficiency and are in urgent need of improvement. Summary of the invention

[0004] The object of the present invention is to provide a batch calibration test device for pressure sensors to solve the technical problem that the calibration efficiency of existing calibration equipment for pressure sensors cannot meet production requirements.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a batch calibration test device for pressure sensors, comprising:

[0006] A calibration component, comprising a calibration platform and a plurality of first data processing boards arranged on the calibration platform, wherein a first detection pipeline is arranged in the calibration platform, a board surface of the first data processing board is attached to an upper surface of the calibration platform, and each of the first data processing boards is evenly arranged on the calibration platform;

[0007] An installation module, multiple sensors to be calibrated are installed on the installation module, there are multiple installation modules, each of which is evenly arranged on the upper surface of the calibration platform, there are multiple first detection pipelines and multiple first data processing boards, and each of the installation modules corresponds to each of the first detection pipelines one by one, each of the first data processing boards corresponds to each of the installation modules one by one, the sensor is connected to the first detection pipeline, and the sensor is electrically connected to the first data processing board.

[0008] In a possible implementation, the installation module includes a mounting block, which is connected to the plurality of sensors. A second detection pipeline and a second data processing board are provided in the mounting block. The second detection pipeline has a first connection end connected to the first detection pipeline, and a second connection end connected to the sensor. The second data processing board is electrically connected to the first data processing board and the sensor, respectively. The second data processing board can collect electrical signals from the sensors and transmit the electrical signals to the first data processing board.

[0009] In a possible implementation, the second data processing board is provided with a plurality of connectors, and the connectors are electrically connected to the sensors.

[0010] In a possible implementation, the mounting block is further provided with a detection branch, and there are multiple detection branches, one end of the detection branch is connected to the sensor, and the other end of the detection branch is connected to the second detection pipeline.

[0011] In a possible implementation, the calibration component also includes an elastic probe, which is arranged on the first data processing board. The lower surface of the second data processing board is provided with an electrical connection contact, and the electrical connection contact has a first state of being electrically connected to the elastic probe, and a second state of not being electrically connected to the elastic probe.

[0012] In a possible implementation, the calibration component also includes a sealing plug, which has a first state in which the first detection line and the second detection line are connected, and a second state in which the first detection line and the second detection line are not connected.

[0013] In a possible implementation, the mounting module further includes a mounting bolt, which is threadedly connected to the calibration platform and plugged into the mounting block to lock the mounting block to the calibration platform.

[0014] In a possible implementation, the batch calibration test device for the pressure sensor also includes a temperature control box and a host computer, the host computer is electrically connected to the first data processing board, and the host computer is integrated with a pressure controller, the pressure controller is used to control the detection pressure of the first detection pipeline, the calibration platform, the first data processing board, the sensor, the mounting block and the second data processing board are all arranged in the temperature control box.

[0015] In a possible implementation, the temperature control box includes an inner lining layer, a heat preservation layer and an outer protective layer arranged in sequence from the inside to the outside.

[0016] Compared with the prior art, the beneficial effect of the batch calibration and testing device for pressure sensors provided by the present invention is that: the installation module can install multiple sensors, and after each sensor is respectively set on multiple installation modules, each installation module can be installed on the calibration platform, and the calibration platform can provide pressure to each sensor through the first detection pipeline, and collect the pressure data of each sensor through the first data processing board. In this way, under the condition of controlling the input pressure, the present invention can detect the sensors in batches through the information collected by each sensor, which is conducive to solving the technical problem of insufficient detection and calibration test efficiency of sensors by existing calibration and testing devices.

[0017] Another object of the present invention is to provide a production line for pressure sensors, comprising the batch calibration and testing device for pressure sensors described above.

[0018] Compared with the prior art, the production line of the pressure sensor in the present invention has all the advantages of the batch calibration test device of the pressure sensor mentioned above, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 A partial structural schematic diagram of a batch calibration test device for pressure sensors provided by the present invention;

[0021] Figure 2It is a schematic diagram of the positional relationship between the mounting block and the second data processing board of the present invention;

[0022] Figure 3 It is a cross-sectional view of the internal structure of the mounting block of the batch calibration test device of the pressure sensor of the present invention;

[0023] Figure 4 It is a schematic diagram of the connection relationship of the batch calibration test device of the pressure sensor of the present invention.

[0024] In the figure:

[0025] 1. Calibration assembly; 11. Calibration platform; 110. First detection pipeline; 12. First data processing board; 13. Sealing plug; 14. Elastic probe;

[0026] 2. Mounting module; 21. Mounting block; 210. Second detection pipeline; 22. Second data processing board; 221. Connector; 23. Detection branch; 24. Mounting bolt; 25. Mounting through hole;

[0027] 3. Temperature control box;

[0028] 4. Host computer. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inside" and "back" appear to indicate orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection", and "connector" should be understood in a broad sense. For example, the connection 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, an indirect connection through an intermediate medium, or a connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] Please also read Figures 1 to 4 The batch calibration test device for pressure sensors provided by the present invention is now described. In general, in order to solve the technical problem that the existing sensor detection tooling has insufficient detection and calibration efficiency for sensors, the batch calibration test device for pressure sensors in the present invention mainly includes a calibration platform 11 and a plurality of mounting modules 2 arranged on the calibration platform 11. The mounting module 2 can integrate a plurality of sensors, and then improve the detection and calibration efficiency of the sensor through the combination of the calibration platform 11 and the plurality of mounting modules 2.

[0034] Based on the above overall design concept, in a specific embodiment, the batch calibration and testing device of the pressure sensor in the present invention includes a calibration component 1 and an installation module 2, wherein the calibration component 1 includes a calibration platform 11 and a plurality of first data processing boards 12 arranged on the calibration platform 11, a first detection pipeline 110 is arranged in the calibration platform 11, the board surface of the first data processing board 12 is attached to the upper surface of the calibration platform 11, and each first data processing board 12 is evenly arranged on the calibration platform 11; the installation module 2 is used for multiple installation sensors and collects information from the sensors, the installation module 2 can form a connection between the first detection pipeline 110 and the sensor, and can form an electrical connection between the sensor and the first data processing board 12, and there are multiple installation modules 2, each installation module 2 is evenly arranged on the upper surface of the calibration platform 11, there are multiple first detection pipelines 110 and first data processing boards 12, and each first detection pipeline 110 and each first data processing board 12 corresponds one by one to each installation module 2.

[0035] In this embodiment, the installation module 2 can install multiple sensors. After each sensor is respectively set on a plurality of installation modules 2, each installation module 2 can be installed on the calibration platform 11. The calibration platform 11 can provide pressure for each sensor through the first detection pipeline 110, and collect pressure data of each sensor through the first data processing board 12. In this way, under the condition of controlling the input pressure, the present invention can detect the sensors in batches through the information collected by each sensor, which is helpful to solve the technical problem of insufficient detection and calibration test efficiency of the existing calibration test device for the sensor.

[0036] Based on the above embodiment, a more specific implementation is proposed. Specifically, the installation module 2 includes a mounting block 21, the mounting block 21 is used to install multiple sensors, and a second detection pipeline 210 and a second data processing board 22 are arranged in the mounting block 21. The second detection pipeline 210 can connect the first detection pipeline 110 and the sensor, and the second data processing board 22 is electrically connected to the first data processing board 12 and the sensor, and the second data processing board 22 can collect the electrical signal of the sensor. The calibration pressure is provided by connecting the sensor and the first detection pipeline 110 through the second detection pipeline 210 to detect and calibrate the sensor; it should be noted that the installation module 2 in the present invention is also equivalent to a calibration device that can calibrate multiple sensors at the same time. The present invention improves the calibration efficiency of the sensor by integrating multiple installation modules 2 mentioned above on a calibration platform 11, and can make the single batch of sensor testing more portable by installing each installation module 2 on the calibration platform 11.

[0037] In some feasible implementations, the second data processing board 22 is provided with a plurality of connectors 221, and the electrical connectors are electrically connected to the sensor, so that the second data processing board 22 and the sensor are connected through each connector 221, thereby forming a stable connection between the sensor and the second data processing board 22, and making the electrical signal output of the sensor more stable.

[0038] Furthermore, based on the above embodiments, in some feasible implementation schemes, a detection branch 23 is further provided in the mounting block 21, and there are multiple detection branches 23. One end of the detection branch 23 is connected to the sensor and the other end is connected to the second detection pipeline 210, so that each sensor can be detected separately through each detection branch 23, thereby increasing the number of sensors that can be installed in the mounting block 21.

[0039] In some feasible embodiments, the calibration component 1 also includes an elastic probe 14, which is arranged on the first data processing board 12 and can form an electrical connection between the second data processing board 22 and the second data processing board 22. In this way, when the installation module 2 is installed on the calibration platform 11, the second data processing board 22 can form an electrical connection between the two data boards through the elastic probe 14 when it is close to the first data processing board 12, so that the electrical connection between the installation module 2 and the calibration platform 11 is more portable.

[0040] Similarly, in order to make the connection between the first detection pipeline 110 and the second detection pipeline 210 faster, based on the above embodiment, in some feasible implementations, the calibration component 1 also includes a sealing plug 13, which can form a sealed connection between the first detection pipeline 110 and the second detection pipeline 210. During the installation of the installation module 2 on the calibration platform 11, the sealing plug 13 can be plugged into the second detection pipeline 210, thereby forming a sealed connection between the first detection pipeline 110 and the second detection pipeline 210, so that during the installation of the installation module 2 on the calibration platform 11, the connection between the installation module 2 and the calibration component 1 is faster and more reliable.

[0041] In some feasible embodiments, the mounting module 2 also includes a mounting bolt 24, which can screw the mounting block 21 to the calibration platform 11, so that the mounting block 21 is fixed to the calibration platform 11 through the mounting bolt 24, making the connection between the two more stable. At the same time, corresponding to the mounting bolt 24, a mounting through hole 25 is provided on the mounting block 21, and the mounting bolt 24 is plugged into the mounting through hole 25 to fix the mounting block 21 to the calibration platform 11.

[0042] In addition to the above feasible implementations, in order to further control the detection state of each sensor, in some feasible implementations, the batch calibration test device of the pressure sensor also includes a temperature control box 3 and a host computer 4, the host computer 4 is electrically connected to the first data processing board 12, and the host computer 4 can provide a detection pressure to the first detection pipeline 110, and the calibration platform 11, the first data processing board 12, the sensor, the mounting block 21 and the second data processing board 22 are all arranged in the temperature control box 3. The detection results of the sensor are summarized by the host computer 4, and at the same time, the host computer 4 can control the temperature inside the temperature control box 3 according to the requirements, and provide a variable or stable detection pressure to the sensor according to the detection requirements; based on this embodiment, preferably, in some embodiments, the temperature control box 3 includes an inner lining layer, an outer protective layer and an insulation layer, and the insulation layer is arranged between the inner lining layer and the outer protective layer. To enhance the insulation performance of the insulation box, prevent the detection temperature of the sensor in the detection gap from fluctuating violently, thereby facilitating the improvement of the calibration accuracy of the sensor calibration test.

[0043] It should be noted that the host computer 4 and the first numerical control connection board are electrically connected using the RS-422 protocol so that the signal transmission between the two can adapt to the simultaneous transmission of multiple sensor signals.

[0044] In summary, compared with the prior art, the batch calibration and testing device for pressure sensors provided by the present invention can install multiple sensors through the installation module 2, and can install multiple installation modules 2 on the calibration platform 11. Therefore, the present invention can improve the calibration and detection efficiency of pressure sensors through multiple installation modules 2 integrated in the calibration platform 11. Specifically, after each sensor is respectively arranged on multiple installation modules 2, each installation module 2 can be installed on the calibration platform 11. The calibration platform 11 can provide pressure to each sensor through the first detection pipeline 110, and collect electrical signal data of each sensor through the first data processing board 12. In this way, under the condition of controlling the input pressure, the present invention can detect sensors in batches through the information collected by each sensor, which is conducive to solving the technical problem of insufficient detection and calibration test efficiency of sensors by existing calibration and testing devices. Moreover, the present invention also sets a second data processing board 22 and a second detection pipeline 210 on the installation module 2, so that the detection pressure can be provided to the pressure sensor through the connection between the second detection pipeline 210 and the sensor and the first detection pipeline 110, and the electrical signal of the pressure sensor can be collected through the connection between the second data processing board 22 and the pressure sensor and the first data processing board 12, so that the sensor can be calibrated and tested by pressure control and electrical signal collection. In addition to the above-mentioned beneficial effects, the present invention also controls the detection pressure of the pressure sensor through the host computer 4, and collects the electrical signal of the pressure sensor through the host computer 4, thereby improving the calibration efficiency of the pressure sensor; at the same time, the temperature control box 3 in the present invention can control the detection temperature of the pressure sensor, so that the pressure sensor under different temperature conditions can be calibrated and tested.

[0045] Based on the same inventive concept, the present invention also proposes a production line for pressure sensors, which includes the batch calibration and testing device for pressure sensors mentioned above.

[0046] Compared with the prior art, the production line of the pressure sensor in the present invention has all the advantages of the batch calibration test device of the pressure sensor mentioned above, which will not be described in detail here.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A batch calibration test device for pressure sensors, characterized in that: include: A calibration component (1) comprises a calibration platform (11) and a plurality of first data processing boards (12) arranged on the calibration platform (11), wherein a first detection pipeline (110) is arranged in the calibration platform (11), a board surface of the first data processing board (12) is attached to an upper surface of the calibration platform (11), and each of the first data processing boards (12) is evenly arranged on the calibration platform (11); An installation module (2), a plurality of sensors to be calibrated are installed on the installation module (2), there are a plurality of the installation modules (2), each of the installation modules (2) is evenly arranged on the upper surface of the calibration platform (11), there are a plurality of the first detection pipeline (110) and the first data processing board (12), and each of the installation modules (2) corresponds one-to-one to each of the first detection pipelines (110), each of the first data processing boards (12) corresponds one-to-one to each of the installation modules (2), the sensor is connected to the first detection pipeline (110), and the sensor is electrically connected to the first data processing board (12).

2. The batch calibration test device for pressure sensors according to claim 1, characterized in that: The installation module (2) comprises a mounting block (21), the mounting block (21) being connected to the plurality of sensors, a second detection pipeline (210) and a second data processing board (22) being arranged in the mounting block (21), the second detection pipeline (210) having a first connection end connected to the first detection pipeline (110), and a second connection end connected to the sensor, the second data processing board (22) being electrically connected to the first data processing board (12) and the sensor respectively, the second data processing board (22) being capable of collecting electrical signals from the sensors and transmitting the electrical signals to the first data processing board (12).

3. The batch calibration test device for pressure sensors according to claim 2, characterized in that: The second data processing board (22) is provided with a plurality of connectors (221), and the connectors (221) are electrically connected to the sensors.

4. The batch calibration test device for pressure sensors according to claim 3, characterized in that: The mounting block (21) is also provided with a detection branch (23), wherein there are a plurality of detection branches (23), one end of the detection branch (23) is connected to the sensor, and the other end is connected to the second detection pipeline (210).

5. The batch calibration test device for pressure sensors according to claim 4, characterized in that: The calibration component (1) also includes an elastic probe (14), which is arranged on the first data processing board (12). The lower board surface of the second data processing board (22) is provided with an electrical connection contact, and the electrical connection contact has a first state of being electrically connected to the elastic probe (14) and a second state of being not electrically connected to the elastic probe (14).

6. The batch calibration test device for pressure sensors according to claim 5, characterized in that: The calibration component (1) further comprises a sealing plug (13), wherein the sealing plug (13) has a first state in which the first detection pipeline (110) and the second detection pipeline (210) are connected, and a second state in which the first detection pipeline (110) and the second detection pipeline (210) are not connected.

7. The batch calibration test device for pressure sensors according to claim 5, characterized in that: The mounting module (2) further comprises a mounting bolt (24), wherein the mounting bolt (24) is threadedly connected to the calibration platform (21) and plugged into the mounting block (21) to lock the mounting block (21) to the calibration platform (11).

8. The batch calibration test device for pressure sensors according to claim 2, characterized in that: The batch calibration test device for the pressure sensor further comprises a temperature control box (3) and a host computer (4), wherein the host computer (4) is electrically connected to the first data processing board (12), and the host computer (4) is integrated with a pressure controller, wherein the pressure controller is used to control the detection pressure of the first detection pipeline (110), and the calibration platform (11), the first data processing board (12), the sensor, the mounting block (21) and the second data processing board (22) are all arranged in the temperature control box (3).

9. The batch calibration test device for pressure sensors according to claim 8, characterized in that: The temperature control box (3) comprises an inner lining layer, a heat-insulating layer and an outer protective layer which are arranged in sequence from the inside to the outside.

10. A production line for a pressure sensor, characterized in that: A batch calibration test device comprising the pressure sensor according to any one of claims 1 to 9.

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