An intelligent compensation system for pressure sensor detection

Abstract

The present invention relates to the technical field of pressure sensors, and in particular to an intelligent compensation system for pressure sensor detection, including a pressure sensor fixing slot for placing a pressure sensor to be detected, an auxiliary sensor fixing slot for placing a standard pressure sensor for auxiliary monitoring, a temperature regulating unit, a pressurizing column, a pressure data verification unit for verifying the standard pressure sensor or the pressurizing column, and a data analysis module, wherein the data analysis module is used to perform compensation calculations on the pressure data and classify the pressure sensor to be detected. By setting a standard pressure sensor, the present invention can simultaneously determine whether the working status of other components meets the standards when judging the sensor to be detected, so that the working environment when the sensor to be detected is a standard preset environment, and the temperature and pressure conditions of the pressure sensor are reasonably controlled, so that the quality evaluation of the pressure sensor is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure sensors, and in particular to an intelligent compensation system for pressure sensor detection. 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] Chinese Patent Publication No.: CN104776956A discloses a pressure sensor testing device, including a host computer, a data acquisition system, a signal conditioning circuit, a power supply circuit, a precision pressure sensor, a pressure sensor to be tested, an air pump, a four-way joint, a three-way joint and an air storage tank; the data acquisition system is connected to the host computer by two-way communication, the signal conditioning circuit is connected to the data acquisition system by two-way communication, the power supply circuit is electrically connected to the air pump and the signal conditioning circuit respectively, the precision pressure sensor, the pressure sensor to be tested and the air pump are electrically connected to the signal conditioning circuit respectively, the air pump, the precision pressure sensor and the pressure sensor to be tested are also connected to the four-way joint through an air path respectively, the other interface of the four-way joint is connected to the three-way joint, and the other interface of the three-way joint is connected to the air storage tank.

[0004] Since the deviation value of the pressure sensor may be different under different temperature and pressure conditions, a single evaluation standard cannot effectively evaluate the quality of the pressure sensor. Summary of the invention

[0005] To this end, the present invention provides an intelligent compensation system for pressure sensor detection to overcome the problem in the prior art that the pressure sensor may have different deviation values ​​under different temperature and pressure conditions, and a single evaluation standard cannot perform a good evaluation on the quality of the pressure sensor.

[0006] To achieve the above object, the present invention provides an intelligent compensation system for pressure sensor detection, comprising:

[0007] The shell has a sealed cavity inside;

[0008] A pressure sensor fixing groove, which is arranged inside the housing and is used to place the pressure sensor to be detected;

[0009] Auxiliary sensor fixing grooves, which are provided in plurality and are located around the pressure sensor fixing grooves, and are used to place standard pressure sensors for auxiliary monitoring; the pressure sensor fixing grooves are flush with the top and bottom of each of the auxiliary sensor fixing grooves in the horizontal direction;

[0010] A stress spacer plate, which is arranged above the pressure sensor fixing groove and each of the auxiliary sensor fixing grooves, and the stress spacer plate can fit the upper surface of each fixing groove;

[0011] A temperature regulating unit, which is arranged inside the housing and is used for the temperature inside the housing;

[0012] A pressurizing column, which is arranged above the stress spacer plate and is used to pressurize the stress spacer plate;

[0013] A control module, which is used to control the working modes of the pressurizing column and the temperature regulating unit for adjustment;

[0014] A pressure data verification unit, which is connected to each of the standard pressure sensors in each of the auxiliary sensor fixing grooves, and is used to verify the standard pressure sensor or the pressurized column;

[0015] A data analysis module is connected to the temperature detection unit, the pressure sensor to be detected, and each of the standard pressure sensors, and is used to perform compensation calculations on the pressure data and classify the pressure sensors to be detected.

[0016] Intelligent compensation system, also includes,

[0017] A slide platform, wherein the pressure sensor fixing groove and each of the auxiliary sensor fixing grooves are arranged on the slide platform;

[0018] A slide rail, which is arranged below the slide table and located at the bottom of the cavity, and the slide table can move on the slide rail;

[0019] an opening and closing device, which is arranged on one side of the shell; when the opening and closing device is opened, the slide table can move along the slide rail so that the pressure sensor fixing groove and each auxiliary sensor fixing groove are moved to the outside of the shell; when the opening and closing device is closed, a closed cavity is formed inside the shell; an opening and closing shaft is arranged between the opening and closing device and the shell;

[0020] A first limit block, which is arranged on one side of the slide rail and is used to limit the movement of the slide table inside the housing when the opening and closing device is closed;

[0021] A second limit block, which is arranged on the slide rail and close to one side of the opening and closing device, and is used to limit the entire slide from sliding out of the housing when the opening and closing device is opened;

[0022] A first lifting rod is arranged in the first limiting block;

[0023] A second lifting rod is arranged in the second limiting block.

[0024] Intelligent compensation system, also includes,

[0025] A piston unit is arranged on the side of the slide rail, the first limit block and the second limit block are arranged at both ends of the piston unit, a piston cavity and a piston are arranged in the piston unit, and the piston cavity is filled with hydraulic fluid. When the piston moves in the piston cavity, the positions of the first lifting rod and the second lifting rod can be changed;

[0026] A connecting rod, one end of which is arranged outside the piston cavity and the other end of which is connected to the piston;

[0027] A motion steering device, one end of which is connected to the opening and closing shaft, and the other end of which is connected to the connecting rod arranged outside the piston chamber, so that the opening and closing shaft can drive the connecting rod to perform linear motion when performing rotational motion.

[0028] Furthermore, the number of the auxiliary sensor fixing grooves is an even number and is evenly distributed around the pressure sensor fixing groove, a standard pressure sensor is arranged in each auxiliary sensor fixing groove, and the pressure data verification unit numbers each of the standard pressure sensors.

[0029] Furthermore, the control module can control the pressurizing column to pressurize the stress spacer plate when the pressure sensor to be tested is not placed in the pressure sensor fixing groove. Each standard pressure sensor detects the pressure it is subjected to and transmits the detection result to the pressure data verification unit to verify the standard pressure sensor or the pressurizing column.

[0030] Furthermore, the pressure data verification unit verifies each of the standard pressure sensors by calculating an average value of the data collected by each of the standard pressure sensors, and during the verification process, a standard verification score calculation adjustment value that can vary with the average value is provided.

[0031] Furthermore, the pressure data verification unit verifies the pressurized column by calculating the average value of the data collected by each of the standard pressure sensors, and during the verification process, a pressurized column deviation evaluation value that can vary with the average value is provided.

[0032] Furthermore, the pressure sensor to be tested is placed in the pressure sensor fixing groove when the standard pressure sensors and the pressurizing column are both qualified in the calibration;

[0033] The control module controls the temperature regulating unit to heat the inside of the shell forming a closed cavity to a preset temperature, and controls the pressurizing column to pressurize the stress spacer plate. The data analysis module obtains the pressure value of the pressure sensor to be detected, and obtains the pressure value of each of the standard pressure sensors. The data analysis module analyzes the working state of the temperature regulating unit through the pressure values ​​of each of the standard pressure sensors to determine the working state of the temperature regulating unit.

[0034] Furthermore, after determining that the temperature regulating unit is in good working condition, the pressure value of the standard pressure sensor is compared with the pressure value of the pressure sensor to be tested to determine the accuracy of the pressure sensor to be tested at a single preset temperature and preset pressure.

[0035] Furthermore, the data analysis module obtains the accuracy of the pressure sensor to be tested at different preset temperatures and preset pressures, and grades the quality of the pressure sensor to be tested according to the obtained results.

[0036] Compared with the prior art, the beneficial effect of the present invention lies in that, by setting a standard pressure sensor, the present application can simultaneously determine whether the working status of other components meets the standards when judging the sensor to be tested, so that when judging the sensor to be tested, the working environment of the sensor to be tested is the standard preset environment, and the temperature and pressure conditions of the pressure sensor are reasonably controlled, making the quality evaluation of the pressure sensor more accurate.

[0037] Furthermore, by providing a slide rail and a limit device, the position of the pressure sensor during detection is easily limited, thereby increasing the accuracy of detection. At the same time, when the opening and closing device is closed, the state of the limit block is adjusted to ensure the safety of detection.

[0038] Furthermore, the opening and closing device and the limit device are linked and controlled through a hydraulic structure, thereby further increasing the safety during the detection process.

[0039] Furthermore, by numbering each standard pressure sensor, the standard pressure sensor that is not in a working state can be reasonably determined, thereby shortening the calibration time.

[0040] Furthermore, when conducting quality inspection on the pressure sensor to be inspected, by calibrating the standard pressure sensor and the pressurized column, it is ensured that each standard pressure sensor is within the normal deviation range, so that when the test data is subsequently compared with the test data of the pressure sensor to be inspected, the comparison result is more accurate, thereby increasing the accuracy of the test result.

[0041] Furthermore, by calculating the difference between the average value and the data detected by each standard pressure sensor, the degree of difference in the detection data between the standard pressure sensors is determined. If the degree of data difference is too large, it means that at least one detection data is different from the other detection data, and it can be deduced that there may be a problem with the standard pressure sensor, thereby ensuring the accuracy of the subsequent detection data of the pressure sensor to be detected.

[0042] Furthermore, when calibrating the standard pressure sensor, the numerical value of the adjustment value calculated by the standard calibration score is related to the average value. When the average value is small, it is a certain value. When its value increases to a certain level, it is positively correlated with the average value and gradually approaches a certain value. By regulating the numerical value of the adjustment value calculated by the standard calibration score, the subsequent detection data of the pressure sensor to be detected is guaranteed to be accurate.

[0043] Furthermore, when each of the standard pressure sensors is calibrated and qualified, the pressurization condition is calibrated to ensure that the pressurization column works qualifiedly, and further ensures that the subsequent detection data of the pressure sensor to be detected is accurately determined.

[0044] Furthermore, the pressurized column deviation evaluation value is related to the average value. When the average value is small, it is a certain value. When its value increases to a certain level, it is positively correlated with the average value and gradually approaches a certain value. By adjusting the pressurized column deviation evaluation value, the subsequent judgment of the pressure sensor detection data to be detected is guaranteed to be accurate.

[0045] Furthermore, by determining the working state of the temperature regulating unit, it is ensured that the temperature regulating unit works properly, and further ensures that the subsequent detection data of the pressure sensor to be detected is accurately determined.

[0046] Furthermore, by counting the accuracies at different preset temperatures and preset pressures, the situation of the pressure sensor to be tested is comprehensively determined, so that the test result is more accurate.

[0047] Furthermore, by setting a preset quality score, the pressure sensor detection results are graded to better evaluate the quality of the pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of an intelligent compensation system for pressure sensor detection in an embodiment;

[0049] Figure 2 It is an enlarged schematic diagram of the bottom structure of the intelligent compensation system for pressure sensor detection in the embodiment;

[0050] Figure 3 It is an enlarged schematic diagram of the top view of the slide structure in the embodiment. DETAILED DESCRIPTION

[0051] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with 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.

[0052] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0053] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0054] In addition, it should be noted that in the description of the present invention, 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] See also Figure 1-Figure 3 As shown, Figure 1 It is a structural schematic diagram of an intelligent compensation system for pressure sensor detection in an embodiment; Figure 2 It is an enlarged schematic diagram of the bottom structure of the intelligent compensation system for pressure sensor detection in the embodiment; Figure 3 It is an enlarged schematic diagram of the top view of the slide structure in the embodiment.

[0056] The present invention provides an intelligent compensation system for pressure sensor detection, comprising:

[0057] The housing 1 has a sealed cavity inside;

[0058] A pressure sensor fixing groove 2, which is arranged inside the housing 1 and is used to place the pressure sensor to be detected;

[0059] Auxiliary sensor fixing grooves 3, which are provided in plurality and are located around the pressure sensor fixing grooves 2, and are used to place standard pressure sensors for auxiliary monitoring; the pressure sensor fixing grooves 2 and the top and bottom of each of the auxiliary sensor fixing grooves 3 are flush in the horizontal direction;

[0060] A stress spacer plate 4 is arranged above the pressure sensor fixing groove 2 and each of the auxiliary sensor fixing grooves 3, and the stress spacer plate 4 can fit the upper surface of each fixing groove;

[0061] A temperature regulating unit 5, which is arranged inside the housing 1 and is used to control the temperature inside the housing 1;

[0062] A pressurizing column 6, which is arranged above the stress spacer plate 4 and is used to pressurize the stress spacer plate 4;

[0063] A control module 7, which is used to control the working modes of the pressurizing column 6 and the temperature regulating unit 5;

[0064] A pressure data verification unit 8, which is connected to each of the standard pressure sensors in each of the auxiliary sensor fixing grooves 3, and is used to verify the standard pressure sensor or the pressurization column 6;

[0065] The data analysis module 9 is connected to the temperature detection unit, the pressure sensor to be detected, and each of the standard pressure sensors, and is used to perform compensation calculation on the pressure data and classify the pressure sensors to be detected.

[0066] By setting a standard pressure sensor, the present application can simultaneously determine whether the working status of other components meets the standards when judging the sensor to be tested, so that when judging the sensor to be tested, the working environment of the sensor to be tested is the standard preset environment, and the temperature and pressure conditions of the pressure sensor are reasonably controlled, making the quality evaluation of the pressure sensor more accurate.

[0067] The number of the auxiliary sensor fixing grooves 3 is an even number and is evenly distributed around the pressure sensor fixing groove 2 .

[0068] The intelligent compensation system further includes:

[0069] A slide 10, the pressure sensor fixing groove 2 and each of the auxiliary sensor fixing grooves 3 are arranged on the slide 10;

[0070] A slide rail 11, which is arranged below the slide table 10 and located at the bottom of the cavity, and the slide table 10 can move on the slide rail 11;

[0071] An opening and closing device 12 is arranged on one side of the housing 1. When the opening and closing device 12 is opened, the slide 10 can move along the slide rail 11 to move the pressure sensor fixing groove 2 and each auxiliary sensor fixing groove 3 to the outside of the housing 1. When the opening and closing device 12 is closed, a closed cavity is formed inside the housing 1. An opening and closing axis is arranged between the opening and closing device 12 and the housing 1.

[0072] A first limit block 13, which is arranged on one side of the slide rail 11 and is used to limit the movement of the slide 10 inside the housing 1 when the opening and closing device 12 is closed;

[0073] A second limit block 14 is disposed on the slide rail 11 and close to one side of the opening and closing device 12, and is used to limit the slide 10 from sliding out of the housing 1 as a whole when the opening and closing device 12 is opened;

[0074] A first lifting rod 131 is disposed in the first limiting block 13;

[0075] A second lifting rod 141 is disposed in the second limiting block 14 .

[0076] By providing the slide rail 11 and the limit device, the position of the pressure sensor during detection is conveniently limited, thereby increasing the accuracy of detection. At the same time, when the opening and closing device 12 is closed, the state of the limit block is adjusted to ensure the safety of detection.

[0077] The intelligent compensation system further includes:

[0078] The piston unit 16 is arranged on the side of the slide rail 11, the first limit block 13 and the second limit block 14 are arranged at both ends of the piston unit 16, and a piston cavity and a piston are arranged in the piston unit 16. The piston cavity is filled with hydraulic fluid. When the piston moves in the piston cavity, the positions of the first lifting rod 131 and the second lifting rod 141 can be changed;

[0079] A connecting rod 17, one end of which is arranged outside the piston cavity and the other end is connected to the piston;

[0080] The motion steering device 15 has one end connected to the opening and closing shaft and the other end connected to the connecting rod 17 disposed outside the piston chamber, so that the opening and closing shaft can drive the connecting rod 17 to perform linear motion when performing rotational motion.

[0081] The opening and closing device 12 and the limit device are linked and controlled through the hydraulic structure, so as to further increase the safety during the detection process.

[0082] In this embodiment, the number of auxiliary sensor fixing slots is set to 4, and a standard pressure sensor is set in each auxiliary sensor fixing slot, and they are respectively recorded as the first standard pressure sensor A1, the second standard pressure sensor A2, the third standard pressure sensor A3, and the fourth standard pressure sensor A4, wherein the pressure value detected by the first standard pressure sensor A1 is recorded as the first standard calibration test pressure B1, the pressure value detected by the second standard pressure sensor A2 is recorded as the second standard calibration test pressure B2, the pressure value detected by the third standard pressure sensor A3 is recorded as the third standard calibration test pressure B3, and the pressure value detected by the fourth standard pressure sensor A4 is recorded as the fourth standard calibration test pressure B4.

[0083] By numbering each standard pressure sensor, the standard pressure sensor that is not in working condition can be reasonably determined, thus shortening the calibration time.

[0084] The control module can control the pressurizing column to pressurize the stress spacer plate when the pressure sensor to be tested is not placed in the pressure sensor fixing groove. Each standard pressure sensor detects the pressure it is subjected to and transmits the detection result to the pressure data verification unit to verify the standard pressure sensor or the pressurizing column.

[0085] When conducting quality inspection on the pressure sensor to be inspected, the standard pressure sensor and the pressurized column are calibrated to ensure that each standard pressure sensor is within the normal deviation range, so that when the test data is subsequently compared with the test data of the pressure sensor to be inspected, the comparison result is more accurate, thereby increasing the accuracy of the test result.

[0086] The pressure data verification unit obtains the standard verification detection pressure detected by each of the standard pressure sensors, and calculates the standard verification score P0, and sets,

[0087]

[0088] BP=(B1+B2+B3+B4)÷4;

[0089] Wherein, BP is the average value of the standard calibration test pressure, and α is the adjustment value for the standard calibration score calculation.

[0090] The pressure data verification unit is provided with a verification score basic value Pz,

[0091] If P0>Pz, the pressure data verification unit determines that there is an unqualified sensor in each of the standard pressure sensors, and the standard pressure sensor needs to be replaced;

[0092] If P0≤Pz, the pressure data verification unit determines that each of the standard pressure sensors has passed the verification.

[0093] By calculating the difference between the average value and the data detected by each standard pressure sensor, the degree of difference in the detection data between the standard pressure sensors is determined. If the degree of data difference is too large, it means that at least one detection data is different from the other detection data, and it can be deduced that there may be problems with the standard pressure sensor, thereby ensuring the accuracy of subsequent detection data of the pressure sensor to be detected.

[0094] The value of the adjustment value α calculated by the standard calibration score is related to the BP value, and the larger the BP value, the larger the value of the calculated adjustment value α;

[0095] set up

[0096] Wherein, b is the numerical value of the standard calibration score calculation adjustment value α to determine the segmentation value, and log2b=0.8.

[0097] When calibrating the standard pressure sensor, the numerical value of the adjustment value calculated by the standard calibration score is related to the average value. When the average value is small, it is a certain value. When its value increases to a certain level, it is positively correlated with the average value and gradually approaches a certain value. By regulating the numerical value of the adjustment value calculated by the standard calibration score, the subsequent detection data of the pressure sensor to be detected is guaranteed to be accurate.

[0098] The pressure data verification unit verifies the pressurization of the pressurization column when each of the standard pressure sensors passes the verification. The pressurization value input to the pressurization column by the control module is BJ. The pressure data verification unit calculates the absolute value Bc of the difference between the pressurization value BJ and the standard verification detection pressure average value BP, Bc=|BJ-BP|. The pressure data verification unit is provided with a pressurization column deviation evaluation value Bz,

[0099] If Bc≥Bz, the pressure data verification unit determines that the pressure column verification fails;

[0100] If Bc<Bz, the pressure data verification unit determines that the pressurization column verification is qualified.

[0101] When each of the standard pressure sensors is calibrated to be qualified, the pressurization condition is calibrated to ensure that the pressurization column works qualifiedly, and further ensures that the subsequent test data of the pressure sensor to be tested is accurately determined.

[0102] The value of the pressurized column deviation evaluation value Bz is related to the BP value.

[0103] set up,

[0104] Here, z is a numerical value of the pressurized column deviation evaluation value Bz that determines the split value, and log3z=2.

[0105] The pressure column deviation evaluation value is related to the average value. When the average value is small, it is a certain value. When its value increases to a certain level, it is positively correlated with the average value and gradually approaches a certain value. By adjusting the pressure column deviation evaluation value, the subsequent judgment of the pressure sensor detection data to be detected is guaranteed to be accurate.

[0106] The pressure sensor to be tested is placed in the pressure sensor fixing groove when the standard pressure sensors and the pressurizing column are both qualified.

[0107] The control module controls the temperature regulating unit to heat the inside of the shell forming the closed cavity to a preset temperature, and controls the pressurizing column to pressurize the stress spacer plate. The data analysis module obtains the pressure value of the pressure sensor to be detected, and obtains the pressure value of each of the standard pressure sensors. The data analysis module analyzes the working state of the temperature regulating unit through the pressure value of each of the standard pressure sensors. After determining that the temperature regulating unit is in good working state, the pressure value of the standard pressure sensor is compared with the pressure value of the pressure sensor to be detected to determine the accuracy of the pressure sensor to be detected under a single preset temperature and preset pressure.

[0108] The control module controls the temperature regulating unit to heat the interior of the shell to a first preheating temperature H1, and controls the pressurizing column to pressurize the stress spacer with a first pressurizing value BQ1. The data analysis module obtains the pressure value of each of the standard pressure sensors and calculates the standard calibration detection pressure average value BP'. The data analysis module calculates the absolute value Bs of the difference between the pressure average value BP' and the first pressurizing value BQ1, Bs = |BP'-BQ1|.

[0109] If Bs≤Bsz, it is determined that the temperature adjustment unit is in good working condition;

[0110] If Bs>Bsz, the working state of the temperature adjustment unit is judged to be unqualified;

[0111] Bsz is the temperature control unit deviation judgment value.

[0112] By determining the working state of the temperature regulating unit, the qualified operation of the temperature regulating unit is ensured, and the accuracy of the subsequent detection data of the pressure sensor to be detected is further ensured.

[0113] After determining that the temperature adjustment unit is in good working condition, the data analysis module obtains the pressure value J1 of the pressure sensor to be tested, and calculates the absolute value Bx of the difference between the pressure average value BP' and the pressure value J1, Bx = |BP'-J1|, if Bx≤Bjz, it is determined that the quality of the pressure sensor to be tested is qualified under the current temperature and pressure, and the accuracy Z11 of the pressure sensor to be tested under the current temperature and pressure is calculated.

[0114]

[0115] The data analysis module obtains the accuracy of the pressure sensor to be tested at different preset temperatures and preset pressures, and grades the quality of the pressure sensor to be tested according to the obtained results.

[0116] The control module is provided with a first preheating temperature H1, a second preheating temperature H2, a third preheating temperature H3, a first pressurization value BQ1, and a second pressurization value BQ2. The control module can select any of the preheating temperatures and any of the pressurization values ​​to regulate the working modes of the temperature regulating unit and the pressurization column, and pair them up in pairs. When the data analysis module calculates the accuracy Zmk of the pressure sensor to be detected, m=1,2,3; k=1,2.

[0117] By counting the accuracy under different preset temperatures and preset pressures, the situation of the pressure sensor to be tested is comprehensively determined, making the test result more accurate.

[0118] The data analysis module calculates the quality score Fp of the pressure sensor to be tested.

[0119] Fp=Z11+Z12+Z21+Z22+Z31+Z32

[0120] The data analysis module is provided with a first preset quality score F1 and a second preset quality score F2;

[0121] If Fp≤F1, the data analysis module determines that the quality of the pressure sensor to be tested is unqualified;

[0122] If F1<Fp≤F2, the data analysis module determines that the quality of the pressure sensor to be tested is qualified;

[0123] If Fp>F2, the data analysis module determines that the quality of the pressure sensor to be tested is good.

[0124] By setting preset quality scores, the pressure sensor test results are graded to better evaluate the quality of the pressure sensor.

[0125] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0126] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent compensation system for pressure sensor detection, characterized in that: include, The shell has a sealed cavity inside; A pressure sensor fixing groove, which is arranged inside the housing and is used to place the pressure sensor to be detected; Auxiliary sensor fixing grooves, which are provided in plurality and are located around the pressure sensor fixing grooves, and are used to place standard pressure sensors for auxiliary monitoring; the pressure sensor fixing grooves are flush with the top and bottom of each of the auxiliary sensor fixing grooves in the horizontal direction; A stress spacer plate, which is arranged above the pressure sensor fixing groove and each of the auxiliary sensor fixing grooves, and the stress spacer plate can fit the upper surface of each fixing groove; A temperature regulating unit, which is arranged inside the housing and is used for the temperature inside the housing; A pressurizing column, which is arranged above the stress spacer plate and is used to pressurize the stress spacer plate; A control module, which is used to control the working modes of the pressurizing column and the temperature regulating unit for adjustment; A pressure data verification unit, which is connected to each of the standard pressure sensors in each of the auxiliary sensor fixing grooves, and is used to verify the standard pressure sensor or the pressurized column; A data analysis module, which is connected to the temperature detection unit, the pressure sensor to be detected, and each of the standard pressure sensors, and is used to perform compensation calculation on the pressure data and classify the pressure sensors to be detected; Wherein, the control module can control the pressurizing column to pressurize the stress spacer plate when the pressure sensor to be tested is not placed in the pressure sensor fixing groove, and each of the standard pressure sensors detects the pressure it is subjected to and transmits the detection result to the pressure data verification unit to verify the standard pressure sensor or the pressurizing column; The pressure sensor to be tested is placed in the pressure sensor fixing groove when the standard pressure sensors and the pressurizing column are both qualified; The pressure data verification unit verifies each of the standard pressure sensors by calculating the average value of the data collected by each of the standard pressure sensors, and during the verification process, a standard verification score calculation adjustment value that can change with the average value is provided; The pressure data verification unit obtains the standard verification detection pressure detected by each of the standard pressure sensors, and calculates the standard verification score P0, and sets, BP=(B1+B2+B3+B4)÷4; Among them, BP is the average value of the standard calibration test pressure, and α is the standard calibration score calculation adjustment value; The pressure data verification unit is provided with a verification score basic value Pz, If P0>Pz, the pressure data verification unit determines that there is an unqualified sensor in each of the standard pressure sensors, and the standard pressure sensor needs to be replaced; If P0≤Pz, the pressure data verification unit determines that each of the standard pressure sensors has passed the verification; The value of the adjustment value α calculated by the standard calibration score is related to the BP value, and the larger the BP value, the larger the value of the calculated adjustment value α; set up Wherein, b is the numerical value of the standard calibration score calculation adjustment value α to determine the split value, and log2b=0.8; The pressure data verification unit verifies the pressurization of the pressurization column when each of the standard pressure sensors passes the verification. The pressurization value input to the pressurization column by the control module is BJ. The pressure data verification unit calculates the absolute value Bc of the difference between the pressurization value BJ and the standard verification detection pressure average value BP, Bc=|BJ-BP|. The pressure data verification unit is provided with a pressurization column deviation evaluation value Bz, If Bc≥Bz, the pressure data verification unit determines that the pressure column verification fails; If Bc<Bz, the pressure data verification unit determines that the pressure column verification is qualified; The value of the pressurized column deviation evaluation value Bz is related to the BP value. set up, Here, z is a numerical value of the pressurized column deviation evaluation value Bz that determines the split value, and log3z=2.

2. The intelligent compensation system for pressure sensor detection according to claim 1, characterized in that: Also includes, A slide platform, wherein the pressure sensor fixing groove and each of the auxiliary sensor fixing grooves are arranged on the slide platform; A slide rail, which is arranged below the slide table and located at the bottom of the cavity, and the slide table can move on the slide rail; an opening and closing device, which is arranged on one side of the shell; when the opening and closing device is opened, the slide table can move along the slide rail so that the pressure sensor fixing groove and each auxiliary sensor fixing groove are moved to the outside of the shell; when the opening and closing device is closed, a closed cavity is formed inside the shell; an opening and closing shaft is arranged between the opening and closing device and the shell; A first limit block, which is arranged on one side of the slide rail and is used to limit the movement of the slide table inside the housing when the opening and closing device is closed; A second limit block, which is arranged on the slide rail and close to one side of the opening and closing device, and is used to limit the entire slide from sliding out of the housing when the opening and closing device is opened; A first lifting rod is arranged in the first limiting block; A second lifting rod is arranged in the second limiting block.

3. The intelligent compensation system for pressure sensor detection according to claim 2, characterized in that: Also includes, A piston unit is arranged on the side of the slide rail, the first limit block and the second limit block are arranged at both ends of the piston unit, a piston cavity and a piston are arranged in the piston unit, and the piston cavity is filled with hydraulic fluid. When the piston moves in the piston cavity, the positions of the first lifting rod and the second lifting rod can be changed; A connecting rod, one end of which is arranged outside the piston cavity and the other end of which is connected to the piston; A motion steering device, one end of which is connected to the opening and closing shaft, and the other end of which is connected to the connecting rod arranged outside the piston chamber, so that the opening and closing shaft can drive the connecting rod to perform linear motion when performing rotational motion.

4. The intelligent compensation system for pressure sensor detection according to claim 3, characterized in that: The number of the auxiliary sensor fixing grooves is an even number and is evenly distributed around the pressure sensor fixing groove. A standard pressure sensor is arranged in each auxiliary sensor fixing groove, and the pressure data verification unit numbers each standard pressure sensor.

5. The intelligent compensation system for pressure sensor detection according to claim 4, characterized in that: After determining that the temperature regulating unit is in good working condition, the pressure value of the standard pressure sensor is compared with the pressure value of the pressure sensor to be tested to determine the accuracy of the pressure sensor to be tested under a single preset temperature and preset pressure.

6. The intelligent compensation system for pressure sensor detection according to claim 5, characterized in that: The data analysis module obtains the accuracy of the pressure sensor to be detected at different preset temperatures and preset pressures, and grades the quality of the pressure sensor to be detected according to the obtained results.

Images