阅读说明：本技术 一种压力分布传感器平衡、校准装置及方法 (Pressure distribution sensor balancing and calibrating device and method ) 是由 张亚峰 王峰 刘仲 赵亮 于 2020-05-15 设计创作，主要内容包括：本发明涉及压力分布传感器测量装置及方法,特别涉及一种压力分布传感器平衡、校准装置及方法。具有上舱盖与下舱盖,所述上舱盖与下舱盖之间安装有柔性气密室、环形密封框与传感器托盘；所述上舱盖上还设置有气孔,气孔连接有压力变送器、泄压端、加压端,所述上舱盖与所述下舱盖固定锁紧成一个密封的压力舱。本发明通过对流体加压来为压力分布传感器进行平衡、校准。通过对气密室内的流体进行加压,气密室在感受到压力后反作用到传感器上的感应点,从而使传感器上的各个感应点感受到均匀一致的压力,通过对压力舱内压力大小的调节控制对传感器感应点压力的大小,来完成连续多量程精准压力点的平衡和校准。(The invention relates to a pressure distribution sensor measuring device and a method, in particular to a pressure distribution sensor balancing and calibrating device and a method. The device is provided with an upper cabin cover and a lower cabin cover, wherein a flexible airtight chamber, an annular sealing frame and a sensor tray are arranged between the upper cabin cover and the lower cabin cover; the upper cabin cover is further provided with an air hole, the air hole is connected with a pressure transmitter, a pressure relief end and a pressurization end, and the upper cabin cover and the lower cabin cover are fixedly locked to form a sealed pressure cabin. The invention balances and calibrates the pressure distribution sensor by pressurizing the fluid. The fluid in the airtight chamber is pressurized, and the airtight chamber reacts to the sensing points on the sensor after sensing the pressure, so that all the sensing points on the sensor can sense uniform and consistent pressure, and the pressure of the sensing points of the sensor is controlled by adjusting the pressure in the pressure cabin, so that the balance and calibration of continuous multi-range accurate pressure points are completed.)

1. A pressure distribution sensor balancing, calibrating device, has upper deck lid (1) and lower deck lid (5), its characterized in that: a flexible airtight chamber (2), an annular sealing frame (3) and a sensor tray (4) are arranged between the upper cabin cover (1) and the lower cabin cover (5); the upper cabin cover (1) is further provided with an air hole connected with a pressure transmitter (6), a pressure relief end (7) and a pressurization end (9), and the upper cabin cover (1) and the lower cabin cover (5) are fixedly locked to form a sealed pressure cabin.

2. The pressure distribution sensor balancing and calibrating device according to claim 1, characterized in that: the pressurizing end (9) is also provided with a check valve (8).

3. The pressure distribution sensor balancing and calibrating device according to claim 1, characterized in that: round bolt counter bores (10) and hexagonal nut counter bores (11) corresponding to the bottom surface of the lower cabin cover (5) are uniformly distributed on three sides of the upper end surface of the upper cabin cover (1), and the upper cabin cover (1) and the lower cabin cover (5) are fixedly locked through the matching of bolts and nuts.

4. The pressure distribution sensor balancing and calibrating device according to claim 1, characterized in that: the upper hatch cover (1) is provided with an annular groove (101) which is in sealing fit with the annular sealing frame (3).

5. A pressure distribution sensor balancing, calibrating device according to claim 3, characterized in that: the bottom surface of the annular sealing frame (3) is provided with a circle of uniformly distributed hexagonal nut counter bores (11) and circular bolt counter bores (10) corresponding to the upper end surface of the upper cabin cover (5), the annular sealing frame (3) and the upper cabin cover (5) are matched, fixed and locked through bolts and nuts, and the flexible airtight chamber (2) is fixedly embedded into an annular groove (101) of the upper cabin cover (1) through the annular sealing frame (3) to form a closed pressure cabin.

6. The pressure distribution sensor balancing and calibrating device according to claim 1, characterized in that: the sensor tray (4) is provided with a square shallow groove (401), and the square shallow groove (401) is positioned under the flexible airtight chamber (2).

7. The pressure distribution sensor balancing and calibrating device according to claim 1, characterized in that: the upper end surface of the lower hatch cover (5) is provided with a groove (501) which is integrated with the sensor tray (4); the sensor tray (4) is longer than the lower hatch (5), with an extension projecting beyond the lower hatch (5).

8. The pressure distribution sensor balancing and calibrating device according to claim 1, characterized in that: the flexible airtight chamber (2) is of a box-shaped structure made of an elastic latex flexible film.

9. A pressure distribution sensor balancing and calibrating method is characterized in that: the method comprises the following steps:

s1, placing a sensing area of a pressure distribution sensor into a square shallow groove (401) of a sensor tray (4), then placing the sensing area and the square shallow groove into a pressure chamber which is not pressurized, accessing a data acquisition device provided with a DPM-pressure distribution test system at the tail end of the pressure distribution sensor, and connecting the data acquisition device to a computer through a USB communication line;

s2, operating data acquisition equipment, namely applying a set Pressure through a pressurizing end (9) connected with an air compressor, wherein the flexible airtight chamber (2) expands and applies Pressure to a Pressure distribution sensor to be detected, the full-scale range of the sensor is divided into a plurality of Pressure points at equal intervals, the Pressure in a Pressure cabin is sequentially adjusted from small to large or from large to small, the set Pressure value is input in Pressure3D viewer software operated in a computer after the Pressure is stabilized, and the Pressure3D viewer software can automatically record and store the corresponding Pressure value;

s3, after the Pressure in the Pressure chamber is stable, the Pressure sensed by each sensing point of the Pressure distribution sensor is consistent, but the simulation values of the sensing points of the Pressure distribution sensor are different when the equipment tests, the simulation values of the sensing points are subjected to differential processing operation to complete balance when the balance function of the Pressure3D viewer software is operated, after balance and calibration files are stored, the Pressure3D viewer software is subjected to operation according to the test values of all the Pressure points tested later to obtain real and accurate Pressure values, and the Pressure calibration in the range of the Pressure distribution sensor is completed after the calibration input of a plurality of Pressure points is continuously carried out;

s4, after the calibration is finished, the Pressure sensed by the Pressure distribution sensor when the Pressure cabin is pressurized can be displayed on the Pressure3D viewer software in real time, the Pressure of the Pressure cabin can be adjusted at will at the moment, and the linear error after the calibration is compared numerically according to the Pressure value displayed by the software and the Pressure value measured by the Pressure transmitter (6) on the Pressure cabin;

s5, after the calibration and the error comparison are completed, opening a pressure relief end (7) to perform pressure relief operation on the pressure chamber, taking out the sensor tray (4) and taking down the pressure distribution sensor from the sensor tray after the pressure in the pressure chamber is completely released, and finishing the balancing and calibrating process;

s6, the sensor can be applied to a working condition environment to be tested, and the Pressure3D viewer software can display the real-time Pressure of each sensing point on the Pressure sub-sensor in real time according to the stored and recorded balance and calibration files.

Technical Field

The invention relates to a pressure distribution sensor measuring device and a method, in particular to a pressure distribution sensor balancing and calibrating device and a method.

Background

The pressure film sensor is distributed on the polyester film material by a plurality of array sensors, and has the advantages of thin thickness, flexibility, more points and the like, but because more points on one sensor can cause the situation that the zero point standards of all sensing points are inconsistent under the same working environment, a plurality of sensing units on the sensor need to be calibrated and balanced simultaneously before use. In addition, when the loading surface of the tester is made of a rigid material, the local stress of the sensor is too large after the loading surface of the tester inclines, so that the sensing area of the sensor is damaged, and the whole sensor is scrapped.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a device and a method for balancing and calibrating a pressure distribution sensor.

The technical scheme for realizing the purpose of the invention is as follows: a pressure distribution sensor balancing and calibrating device is provided with an upper cabin cover and a lower cabin cover, wherein a flexible airtight chamber, an annular sealing frame and a sensor tray are arranged between the upper cabin cover and the lower cabin cover; the upper cabin cover is further provided with an air hole, the air hole is connected with a pressure transmitter, a pressure relief end and a pressurization end, and the upper cabin cover and the lower cabin cover are fixedly locked to form a sealed pressure cabin.

Further, a non-return valve is also assembled on the pressurizing end.

Furthermore, round bolt counter bores are evenly distributed on three sides of the upper end face of the upper cabin cover and hexagonal nut counter bores corresponding to the bottom face of the lower cabin cover, and the upper cabin cover and the lower cabin cover are fixedly locked through the matching of the bolt and the nut.

Furthermore, the upper cabin cover is provided with an annular groove which is in sealing fit with the annular sealing frame.

Furthermore, a circle of uniformly distributed hexagonal nut counter bores are formed in the bottom surface of the annular sealing frame and correspond to the circular bolt counter bores on the upper end face of the upper cabin cover, the annular sealing frame and the upper cabin cover are fixedly locked through the matching of bolts and nuts, and the flexible air-tight chamber is fixedly embedded into the annular groove of the upper cabin cover through the annular sealing frame to form a closed pressure cabin.

Furthermore, a square shallow groove is formed in the sensor tray and is located right below the flexible air-tight chamber.

Furthermore, a groove is formed in the upper end face of the lower cabin cover and is integrated with the sensor tray into a whole; the sensor tray is longer than the lower hatch cover, and the extension part protrudes out of the lower hatch cover.

Furthermore, the flexible airtight chamber is of a box-shaped structure made of an elastic latex flexible membrane.

A pressure distribution sensor balancing and calibrating method comprises the following specific steps:

s1, placing a sensing area of a pressure distribution sensor into a square shallow groove of a sensor tray, then placing the sensing area of the pressure distribution sensor and the square shallow groove into a pressure chamber which is not pressurized, wherein the tail end of the pressure distribution sensor is connected with data acquisition equipment provided with a DPM-pressure distribution testing system, and the data acquisition equipment is connected to a computer through a USB communication line;

s2, operating data acquisition equipment, namely applying a set Pressure through a pressurizing end connected with an air compressor, wherein the flexible airtight chamber expands and applies Pressure to a Pressure distribution sensor to be detected, the full range of the sensor is divided into a plurality of Pressure points at equal intervals, the Pressure in a Pressure cabin is sequentially adjusted from small to large or from large to small, the set Pressure value is input in Pressure3D viewer software operated in a computer after the Pressure is stabilized, and the Pressure3D viewer software can automatically record and store the corresponding Pressure value;

s3, after the Pressure in the Pressure chamber is stable, the Pressure sensed by each sensing point of the Pressure distribution sensor is consistent, but the simulation values of the sensing points of the Pressure distribution sensor are different when the equipment tests, the simulation values of the sensing points are subjected to differential processing operation to complete balance when the balance function of the Pressure3D viewer software is operated, after balance and calibration files are stored, the Pressure3D viewer software is subjected to operation according to the test values of all the Pressure points tested later to obtain real and accurate Pressure values, and the Pressure calibration in the range of the Pressure distribution sensor is completed after the calibration input of a plurality of Pressure points is continuously carried out;

s4, after the calibration is finished, the Pressure sensed by the Pressure distribution sensor when the Pressure cabin is pressurized can be displayed on the Pressure3D viewer software in real time, the Pressure of the Pressure cabin can be adjusted at will at the moment, and the linear error after the calibration is compared in a numerical value mode according to the Pressure value displayed by the software and the Pressure value measured by the Pressure transmitter on the Pressure cabin;

s5, opening a pressure relief end to perform pressure relief operation on the pressure chamber after calibration and error comparison are completed, taking out the sensor tray and taking down the pressure distribution sensor from the sensor tray after the pressure in the pressure chamber is completely released, and finishing the balancing and calibrating process;

s6, the sensor can be applied to a working condition environment to be tested, and the Pressure3D viewer software can display the real-time Pressure of each sensing point on the Pressure sub-sensor in real time according to the stored and recorded balance and calibration files.

After the technical scheme is adopted, the invention has the following positive effects:

(1) the airtight chamber is made of flexible latex, expands after sensing the pressure of fluid and reacts to the sensing point of the sensor, the pressure of the pressure chamber is in flexible contact with the sensing point of the sensor, and therefore damage to the sensing point of the sensor in the case of high pressure is avoided.

(2) The invention balances and calibrates the pressure distribution sensor by pressurizing the fluid, so as to solve the problem of low accuracy in the balance and calibration of the pressure distribution sensor in the prior art.

(3) According to the invention, the fluid in the airtight chamber is pressurized, and the airtight chamber reacts to the sensing points on the sensor after sensing the pressure, so that each sensing point on the sensor senses uniform and consistent pressure, and the pressure of the sensing point of the sensor is controlled by adjusting the pressure in the pressure cabin, thereby completing the balance and calibration of continuous multi-range accurate pressure points.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is an exploded side view of the present invention;

FIG. 4 is a bottom view of the upper deck lid of the present invention;

FIG. 5 is an isometric view of the flexible, air-tight chamber of the present invention;

FIG. 6 is an isometric view of a sensor tray of the present invention;

FIG. 7 is an isometric view of the lower deck lid of the present invention;

Detailed Description

(example 1)

Referring to fig. 1-7, the present invention has an upper cover 1 and a lower cover 5, and a flexible airtight chamber 2, an annular sealing frame 3 and a sensor tray 4 are installed between the upper cover 1 and the lower cover 5; the upper cabin cover 1 is also provided with an air hole which is connected with a pressure transmitter 6, a pressure relief end 7 and a pressurization end 9, and the upper cabin cover 1 and the lower cabin cover 5 are fixedly locked to form a sealed pressure cabin. The pressurizing end 9 is also equipped with a non-return valve 8. The bottom surface of the annular sealing frame 3 is provided with a circle of uniformly distributed hexagonal nut counter bores 11 and circular bolt counter bores 10 corresponding to the upper end surface of the upper cabin cover 5, the annular sealing frame 3 and the upper cabin cover 5 are matched, fixed and locked through bolts and nuts, and the flexible airtight chamber 2 is fixedly embedded into an annular groove 101 of the upper cabin cover 1 through the annular sealing frame 3 to form a closed pressure cabin. The upper hatch 1 is provided with an annular groove 101 which is in sealing fit with the annular sealing frame 3. The flexible airtight chamber 2 is a box-shaped structure of a flexible membrane made of elastic latex. Round bolt counter bores 10 and hexagonal nut counter bores 11 corresponding to the bottom surface of the lower cabin cover 5 are evenly distributed on three sides of the upper end surface of the upper cabin cover 1, and the upper cabin cover 1 and the lower cabin cover 5 are fixedly locked through the bolt and nut matching. The sensor tray 4 is provided with a square shallow groove 401, and the square shallow groove 401 is positioned right below the flexible airtight chamber 2. The upper end surface of the lower hatch cover 5 is provided with a groove 501 which is integrated with the sensor tray 4; the sensor tray 4 is longer than the lower deck lid 5, with extensions protruding from the lower deck lid 5.

The working principle of the invention is as follows: the Pressure distribution sensor sensing area is placed in a square shallow groove 401 of a sensor tray 4 to be assembled, the tail end of the Pressure distribution sensor is connected with acquisition equipment to be connected to a computer, a Pressure transmitter 6 is installed on an air hole of an upper cabin cover 1, a Pressure release end 7 is normally closed, a Pressure application end 9 is connected with an air compressor and used for applying Pressure to fluid in a flexible airtight chamber 2, the airtight chamber is used for reversely acting on sensing points on the sensor after sensing Pressure, so that all the sensing points on the sensor can sense uniform Pressure, and the Pressure of the sensing points of the sensor is adjusted and controlled through Pressure3Dviewer software, so that the balance and calibration of continuous multi-range accurate Pressure points are completed. The flexible airtight chamber 2 is made of flexible latex, so that the flexible airtight chamber expands after being subjected to the pressure of fluid and reacts to the sensing point of the sensor, the pressure of the pressure chamber is in flexible contact with the sensing point of the sensor, the sensing point of the sensor is prevented from being damaged when large pressure is generated, and the pressure relief end 7 is opened to relieve pressure after work is completed. In addition, a pressure end 9 of the device is provided with a check valve 8 which is communicated in a one-way, so that the safety accident caused by the reverse outflow of fluid in the pressure process is prevented.

(example 2)

A pressure distribution sensor balancing and calibrating method comprises the following specific steps:

s1, placing a sensing area of a pressure distribution sensor into a square shallow groove 401 of a sensor tray 4, then placing the sensing area of the pressure distribution sensor and the square shallow groove into a pressure chamber which is not pressurized, wherein the tail end of the pressure distribution sensor is connected with data acquisition equipment provided with a DPM-pressure distribution testing system, and the data acquisition equipment is connected to a computer through a USB communication line;

s2, operating data acquisition equipment, namely applying a set Pressure through a pressurizing end 9 connected with an air compressor, wherein the flexible airtight chamber 2 expands and applies Pressure to a Pressure distribution sensor to be detected, the full range of the sensor is divided into a plurality of Pressure points at equal intervals, the Pressure in a Pressure cabin is sequentially adjusted from small to large or from large to small, the set Pressure value is input in Pressure3D viewer software which operates in a computer after the Pressure is stabilized, and the Pressure3D viewer software can automatically record and store the corresponding Pressure value;

s3, after the Pressure in the Pressure chamber is stable, the Pressure sensed by each sensing point of the Pressure distribution sensor is consistent, but the simulation values of the sensing points of the Pressure distribution sensor are different when the equipment tests, the simulation values of the sensing points are subjected to differential processing operation to complete balance by operating the balance function of the Pressure3D viewer software, and after the balance and calibration files are stored, the Pressure3D viewer software performs operation according to the test values of all the Pressure points tested later to obtain a true and accurate Pressure value; after continuously carrying out calibration input of a plurality of pressure points, completing pressure calibration in the measuring range of the pressure distribution sensor;

s4, after the calibration is finished, the Pressure sensed by the Pressure distribution sensor when the Pressure cabin is pressurized can be displayed on the Pressure3D viewer software in real time, the Pressure of the Pressure cabin can be adjusted at will at the moment, and the linear error after the calibration is compared according to the value of the Pressure displayed by the software and the value of the Pressure measured by the Pressure transmitter 6 on the Pressure cabin;

s5, after the calibration and the error comparison are completed, the pressure relief end 7 can be opened to perform pressure relief operation on the pressure chamber, after the pressure in the pressure chamber is completely released, the sensor tray 4 is taken out, the pressure distribution sensor is taken down from the sensor tray, and the balancing and calibration process is finished;

s6, the sensor can be applied to a working condition environment to be tested, and the Pressure3D viewer software can display the real-time Pressure of each sensing point on the Pressure sub-sensor in real time according to the stored and recorded balance and calibration files.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.