CN118730393B - A pressure detection circuit channel calibration system - Google Patents
A pressure detection circuit channel calibration system Download PDFInfo
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
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Abstract
本发明属于压力检测电路通道校准技术领域，涉及到一种压力检测电路通道校准系统。本发明基于构建的压力传感器校准检测分析模块、当前校准检测压力传感器获取模块、温湿度对应压力补偿值分析模块、输出压力与实际压力获取模块、输出压力与实际压力解析模块、校准调整模块和云数据库，对精度衰减到超出允许范围内的压力传感器进行及时的校准，确保了压力传感器的测量结果准确无误，修正了由环境变化引起的压力传感器的校准误差，对各当前校准检测压力传感器进行及时校准，有助于延长其使用寿命，降低更换成本，也有利于在校准过程中性能下降的压力传感器进行及时的维护，减少了因压力传感器故障导致的生产风险。
The present invention belongs to the technical field of pressure detection circuit channel calibration, and relates to a pressure detection circuit channel calibration system. Based on the constructed pressure sensor calibration detection analysis module, the current calibration detection pressure sensor acquisition module, the temperature and humidity corresponding pressure compensation value analysis module, the output pressure and actual pressure acquisition module, the output pressure and actual pressure analysis module, the calibration adjustment module and the cloud database, the present invention timely calibrates the pressure sensor whose accuracy is attenuated beyond the allowable range, ensures that the measurement results of the pressure sensor are accurate, corrects the calibration error of the pressure sensor caused by environmental changes, and timely calibrates each current calibration detection pressure sensor, which helps to extend its service life and reduce replacement costs. It is also conducive to timely maintenance of pressure sensors whose performance deteriorates during the calibration process, reducing production risks caused by pressure sensor failures.
Description
Technical Field
The invention belongs to the technical field of pressure detection circuit channel calibration, and relates to a pressure detection circuit channel calibration system.
Background
The pressure detection circuit channel calibration system is a device for ensuring the accuracy of the output signal of a pressure sensor, and aims to calibrate the sensor periodically to maintain the accuracy thereof. With the continuous progress of sensor technology, pressure sensors are becoming more and more widely used in various fields. In order to ensure the accuracy and reliability of pressure measurement, calibration of the pressure sensor and its detection circuitry is particularly important. Therefore, the pressure detection circuit channel calibration method for the pressure sensor has very important significance and effect.
Chinese patent publication No. CN115356041a discloses a pressure detection circuit channel calibration device for a closed container, which uses a pressure signal simulation module to simulate a pressure source required by a pressure sensor in a pressure detection process, without providing a pressure source for the pressure sensor manually; and through host computer control module, make control module can pass through data acquisition switching module, pressure detection board switching module and pressure release control panel switching module control pressure signal's flow direction, realize the calibration and the detection to pressure detection board, pressure release control panel and the inside pressure detection circuit of data acquisition module, need not the signal flow direction between artificial switching pressure signal analog module and pressure detection board, pressure release control panel, the data acquisition module, the use is simple and convenient. But it does not take into account other environmental parameters that affect the pressure in performing the calibration.
The existing pressure detection circuit channel calibration method aiming at the pressure sensor can meet basic use requirements, but still has certain defects: on the one hand, the existing pressure detection circuit channel calibration method aiming at the pressure sensor is used for calibrating the pressure sensor regularly, but the existing pressure detection circuit channel calibration method aiming at the pressure sensor is neglected in different use conditions of the pressure sensor, and the accuracy attenuation conditions of the pressure sensor are different, so that the pressure sensor with the accuracy attenuated to be beyond the allowable range cannot be calibrated timely, further the measurement result of the pressure sensor cannot be accurately determined, the safety of products cannot be guaranteed, and the problem of the pressure sensor cannot be found and solved timely.
On the other hand, the existing pressure detection circuit channel calibration method for the pressure sensor can finish the calibration of the pressure sensor, but the existing pressure detection circuit channel calibration method for the pressure sensor lacks consideration on the influence of temperature and humidity in the calibration process, so that errors caused by environmental changes cannot be corrected, a measurement result is more approximate to a true value, and the existing pressure detection circuit channel calibration method for the pressure sensor also omits the analysis on the performance of the pressure sensor in the calibration process, so that the pressure sensor cannot be maintained in time, and the production risk caused by the faults of the pressure sensor cannot be reduced.
Disclosure of Invention
In view of this, in order to solve the above-mentioned problems in the background art, a pressure detection circuit channel calibration system is proposed.
The aim of the invention can be achieved by the following technical scheme: the invention provides a pressure detection circuit channel calibration system, comprising: the system comprises a pressure sensor calibration detection analysis module, a current calibration detection pressure sensor acquisition module, a temperature and humidity corresponding pressure compensation value analysis module, an output pressure and actual pressure acquisition module, an output pressure and actual pressure analysis module, a calibration adjustment module and a cloud database.
The system comprises a pressure sensor calibration detection analysis module, a current calibration detection pressure sensor acquisition module, a temperature and humidity corresponding pressure compensation value analysis module, an output pressure and actual pressure acquisition module, an output pressure and actual pressure analysis module, a calibration adjustment module and a cloud database, wherein the pressure sensor calibration detection analysis module is connected with the current calibration detection pressure sensor acquisition module, the current calibration detection pressure sensor acquisition module is connected with the temperature and humidity corresponding pressure compensation value analysis module, the temperature and humidity corresponding pressure compensation value analysis module is connected with the output pressure and actual pressure acquisition module, the output pressure and actual pressure acquisition module is connected with the output pressure and actual pressure analysis module, the output pressure and actual pressure analysis module is connected with the calibration adjustment module, and the cloud database is respectively connected with the current calibration detection pressure sensor acquisition module and the temperature and humidity compensation analysis module.
The pressure sensor calibration detection analysis module is used for marking each pressure sensor for remote monitoring as each specified pressure sensor, acquiring state data of each specified pressure sensor, and analyzing the calibration time modification requirement of each specified pressure sensor to obtain the pressure sensor of which each calibration time needs to be modified.
The current calibration detection pressure sensor acquisition module is used for acquiring calibration time points of the pressure sensors, which need to be modified in each calibration time, and analyzing the calibration time points according to the calibration time points to obtain each current calibration detection pressure sensor.
The temperature and humidity corresponding pressure compensation value analysis module is used for acquiring the environmental data of each current calibration detection pressure sensor and analyzing the temperature and humidity corresponding pressure compensation value of each current calibration detection pressure sensor.
The output pressure and actual pressure acquisition module is used for performing pressure test on each current calibration detection pressure sensor according to the pressure source equipment to acquire the output pressure and actual pressure detected by each current calibration detection pressure sensor and the corresponding reference pressure meter under each pressure test point condition.
The output pressure and actual pressure analysis module is used for calculating the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test point and analyzing the difference degree of each current calibration detection pressure sensor.
And the calibration adjustment module is used for automatically completing the calibration process of each current calibration detection pressure sensor and generating a detailed calibration report according to the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test point.
The cloud database is used for storing the standard calibration interval duration of each specified pressure sensor, storing the latest calibration time point of each specified pressure sensor, storing the temperature and humidity corresponding to the basic temperature and humidity evaluation index of the pressure sensor, and storing the temperature and humidity evaluation index corresponding to the pressure compensation value corresponding to each temperature and humidity.
Compared with the prior art, the invention has the following beneficial effects: 1. according to the invention, the calibration time modification requirements of each specified pressure sensor are analyzed, so that the pressure sensor required to be modified in each calibration time is obtained, the situation that the corresponding precision attenuation situation is different due to the fact that the use situation of each specified pressure sensor is different is fully considered, and therefore the pressure sensor required to be modified in each calibration time with the precision attenuated beyond the allowable range is calibrated in time, the accuracy of the measurement result of the pressure sensor required to be modified in each calibration time is ensured, the safety of products is ensured, and the problems of the pressure sensor are found and solved in time.
2. According to the invention, the environmental data of each current calibration detection pressure sensor is obtained, and the temperature and humidity corresponding pressure compensation value of each current calibration detection pressure sensor is analyzed, so that the correction of the calibration error of each current calibration detection pressure sensor caused by environmental change is facilitated, and the measurement result is more approximate to a true value.
3. According to the invention, the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test point is calculated, and the difference degree of each current calibration detection pressure sensor is analyzed, so that the current calibration detection pressure sensors can be calibrated in time, the service life of each current calibration detection pressure sensor is prolonged, the replacement cost is reduced, whether the performance of each current calibration detection pressure sensor is reduced or not is found in the calibration process of each current calibration detection pressure sensor, the current calibration detection pressure sensors can be maintained in time, and the production risk caused by the faults of the pressure sensors is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a system module connection according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a pressure detection circuit channel calibration system, and specific modules are distributed as follows: the system comprises a pressure sensor calibration detection analysis module, a current calibration detection pressure sensor acquisition module, a temperature and humidity corresponding pressure compensation value analysis module, an output pressure and actual pressure acquisition module, an output pressure and actual pressure analysis module, a calibration adjustment module and a cloud database. The connection mode between the modules is as follows: the pressure sensor calibration detection analysis module is connected with the current calibration detection pressure sensor acquisition module, the current calibration detection pressure sensor acquisition module is connected with the temperature and humidity corresponding pressure compensation value analysis module, the temperature and humidity corresponding pressure compensation value analysis module is connected with the output pressure and actual pressure acquisition module, the output pressure and actual pressure acquisition module is connected with the output pressure and actual pressure analysis module, the output pressure and actual pressure analysis module is connected with the calibration adjustment module, and the cloud database is respectively connected with the current calibration detection pressure sensor acquisition module and the temperature and humidity compensation analysis module.
The pressure sensor calibration detection analysis module is used for marking each pressure sensor for remote monitoring as each specified pressure sensor, acquiring state data of each specified pressure sensor, and analyzing the calibration time modification requirement of each specified pressure sensor to obtain the pressure sensor of which each calibration time needs to be modified.
As a preferred possible example, the status data of each specified pressure sensor includes the number of maintenance times, the number of component replacement times, the number of use times, and the duration of use.
It should be noted that, the state data of each specified pressure sensor refers to state data obtained by continuously and uninterruptedly detecting each specified pressure sensor in real time in an interval period of time with a calibration time point closest to a current time point as a start time point and a current time point as an end time point.
It should be further described that the specific acquisition modes of the maintenance times, the component replacement times, the usage times and the usage time length of each specified pressure sensor are as follows: the maintenance times, the part replacement times, the use times and the use time of each specified pressure sensor are obtained by directly extracting from the maintenance records of each specified pressure sensor.
As a preferred practical example, the calibration time modification requirement evaluation coefficient of each specified pressure sensor needs to be constructed in the process of analyzing the calibration time modification requirement of each specified pressure sensor, and the specific analysis mode is as follows: extracting maintenance times, component replacement times, use times and use time length of each specified pressure sensor, and respectively recording asWherein，The number of each pressure sensor is given,For the number of pressure sensors, the calibration time modification demand assessment coefficients for each specified pressure sensor are analyzedWhereinThe set allowable maintenance times, the component replacement allowable times, the reference use times and the reference use time period of the pressure sensor are respectively,Is a natural constant.
It should be further noted that, the reasons for analyzing the calibration time modification requirement evaluation coefficient of each specified pressure sensor based on the maintenance times, the component replacement times, the usage times and the usage time length of each specified pressure sensor are as follows: (1) The pressure sensor may gradually degrade during use due to environmental factors, conditions of use, or aging of internal components. The regular maintenance can keep the good working state of the sensor and prolong the service life of the sensor. The number of maintenance reflects the maintenance frequency required for the pressure sensor in maintaining stable performance. If the pressure sensor requires frequent maintenance, indicating a fast performance decay, it may be necessary to shorten the calibration period to ensure measurement accuracy. Conversely, if the maintenance times are less, the pressure sensor performance is stable, and the calibration period can be properly prolonged.
(2) Replacement of critical components can directly affect the overall performance of the pressure sensor. If the pressure sensor is frequently replaced with a component, it is indicated that its internal components are severely worn or the design is defective, which may lead to a decrease in measurement accuracy. Therefore, the number of component replacements is an important indicator for evaluating sensor performance stability and calibration time requirements. According to the number of component replacement, the calibration period can be flexibly adjusted.
(3) As the number of uses increases, wear and aging of the internal components of the pressure sensor becomes increasingly severe, resulting in a decrease in measurement accuracy. For pressure sensors with a high number of uses, the calibration period should be shortened to ensure the measurement accuracy, and for pressure sensors with a low number of uses, the calibration period can be prolonged appropriately to reduce the cost.
(4) Prolonged use can lead to aging of the internal components of the pressure sensor and progressive degradation of performance. According to the use duration of the pressure sensor, the calibration period can be flexibly adjusted.
The calibration time modification demand assessment factor is the result of a comprehensive consideration of the above factors. The method aims at determining the most suitable calibration time by a scientific method so as to ensure that the sensor always maintains higher measurement precision and stability in the use process.
As a preferred practical example, the pressure sensor needs to be modified for each calibration time, and the specific acquisition mode is as follows: comparing the calibration time modification demand evaluation coefficients of the specified pressure sensors with the set calibration time modification demand evaluation coefficient threshold values respectively, if the calibration time modification demand evaluation coefficient of a certain specified pressure sensor is larger than the calibration time modification demand evaluation coefficient threshold value, marking the specified pressure sensor as a pressure sensor with the required modification of the calibration time, otherwise marking the specified pressure sensor as a pressure sensor with the no modification of the calibration time, and further obtaining the pressure sensor with the required modification of the calibration time.
The current calibration detection pressure sensor acquisition module is used for acquiring calibration time points of the pressure sensors, which need to be modified in each calibration time, and analyzing the calibration time points according to the calibration time points to obtain each current calibration detection pressure sensor.
As a preferable practical example, the specific acquisition mode of each current calibration detection pressure sensor includes: extracting calibration time modification demand evaluation coefficients of pressure sensors, the calibration time modification demand evaluation coefficients of which are required to be modified for each calibration time, from the calibration time modification demand evaluation coefficients of each specified pressure sensorWherein，The number of pressure sensors needs to be modified for each calibration time,The number of pressure sensors needs to be modified for calibration time, and。
According to the analytical formulaObtaining each calibration time requires modifying the calibration interval duration of the pressure sensorWhereinThe first selected from the standard calibration interval duration for each specified pressure sensor extracted from the databaseThe calibration times require modification of the standard calibration interval duration of the pressure sensor.
It should be further described that, the reason why the calibration interval duration of the pressure sensor needs to be modified for each calibration time is analyzed based on the calibration time modification requirement evaluation coefficient of the pressure sensor needs to be modified for each calibration time is: the calibration interval time length of the pressure sensor directly relates to the accuracy and reliability of measurement data in the use process, and reasonable calibration intervals can ensure that the pressure sensor is always kept in a specified accuracy range in the effective use period.
The calibration time modification demand evaluation coefficient comprehensively considers various factors such as the maintenance times, the component replacement times, the use times and the use time of the sensor, further the calibration time modification demand evaluation coefficient of the pressure sensor is required to be modified based on each calibration time, the calibration interval time of the pressure sensor required to be modified in each calibration time is analyzed, the performance degradation condition of the pressure sensor under different use conditions can be reflected, and therefore reasonable calibration intervals are set according to actual requirements.
Extracting the latest calibration time point of each specified pressure sensor from the database, screening the latest calibration time point of each calibration time needed to be modified for the pressure sensor, and further adding the latest calibration time point and the corresponding calibration interval time length to obtain the calibration time point of each calibration time needed to be modified for the pressure sensor.
If the calibration time point of the pressure sensor to be modified at a certain calibration time coincides with the current time point, the pressure sensor to be modified at the calibration time is recorded as the current calibration detection pressure sensor, and then each current calibration detection pressure sensor is obtained.
According to the invention, the calibration time modification requirements of each specified pressure sensor are analyzed, so that the pressure sensor required to be modified in each calibration time is obtained, the situation that the corresponding precision attenuation situation is different due to the fact that the use situation of each specified pressure sensor is different is fully considered, and therefore the pressure sensor required to be modified in each calibration time with the precision attenuated beyond the allowable range is calibrated in time, the accuracy of the measurement result of the pressure sensor required to be modified in each calibration time is ensured, the safety of products is ensured, and the problems of the pressure sensor are found and solved in time.
The temperature and humidity corresponding pressure compensation value analysis module is used for acquiring the environmental data of each current calibration detection pressure sensor and analyzing the temperature and humidity corresponding pressure compensation value of each current calibration detection pressure sensor.
As a preferred practical example, the environmental data of each current calibration detection pressure sensor includes temperature and humidity.
It should be further described that the specific acquisition modes of the temperature and the humidity of each current calibration detection pressure sensor are as follows: and directly measuring by using the distributed temperature and humidity sensors to obtain the temperature and humidity of each current calibration detection pressure sensor.
As a preferable feasible example, the specific analysis mode of the temperature and humidity corresponding pressure compensation value of each current calibration detection pressure sensor is as follows: extracting the temperature of each current calibration detection pressure sensorAnd humidity ofWherein，The number of pressure sensors is detected for each current calibration,For the number of the current calibration detection pressure sensors, analyzing the temperature and humidity evaluation index of each current calibration detection pressure sensorWhereinAnd respectively storing the temperature and humidity corresponding to the temperature and humidity basic evaluation index of the pressure sensor in the database.
It should be further described that, based on the temperature and humidity of each current calibration detection pressure sensor, the reason for analyzing the temperature and humidity evaluation index of each current calibration detection pressure sensor is as follows: (1) Temperature is one of the key factors affecting the performance of the pressure sensor. As temperature changes, the material properties of the pressure sensor, such as modulus of elasticity, resistivity, etc., change, resulting in a shift or fluctuation in the sensor output signal. Such offset or fluctuations can directly affect the accuracy and stability of the sensor measurement.
(2) Humidity is another key factor affecting the performance of pressure sensors. In a high humidity environment, condensation may occur in the pressure sensor, resulting in short circuit or performance degradation. In addition, humidity may also affect the insulating properties and electrical characteristics of the sensor material, thereby affecting its measurement accuracy.
Therefore, based on the temperature and the humidity of each current calibration detection pressure sensor, the temperature and the humidity evaluation index of each current calibration detection pressure sensor is analyzed, and the influence of multiple factors such as the temperature and the humidity on the pressure sensor is comprehensively considered.
Comparing the temperature and humidity evaluation index of each current calibration detection pressure sensor with the temperature and humidity evaluation index corresponding to the temperature and humidity corresponding pressure compensation value stored in the database to obtain the temperature and humidity corresponding pressure compensation value of each current calibration detection pressure sensor.
According to the invention, the environmental data of each current calibration detection pressure sensor is obtained, and the temperature and humidity corresponding pressure compensation value of each current calibration detection pressure sensor is analyzed, so that the correction of the calibration error of each current calibration detection pressure sensor caused by environmental change is facilitated, and the measurement result is more approximate to a true value.
The output pressure and actual pressure acquisition module is used for performing pressure test on each current calibration detection pressure sensor according to the pressure source equipment to acquire the output pressure and actual pressure detected by each current calibration detection pressure sensor and the corresponding reference pressure meter under each pressure test point condition.
As a preferred practical example, the application of a known pressure value to each current calibration detection pressure sensor using a pressure source device includes: a1, performing zero calibration on each current calibration detection pressure sensor.
It should be further noted that, the specific operation of performing zero calibration on each current calibration detection pressure sensor is: releasing the pressure source to enable each current calibration detection pressure sensor to be in a completely pressureless state, recording the output pressure of each current calibration detection pressure sensor in the pressureless state, if the output pressure of a certain current calibration detection pressure sensor in the pressureless state is not zero, automatically calibrating the current calibration detection pressure sensor by calibration software to enable the output pressure of the current calibration detection pressure sensor to be zero, and repeatedly calibrating the current calibration detection pressure sensor to finish zero calibration of the current calibration detection pressure sensor, so that the zero calibration of each current calibration detection pressure sensor can be finished in the same way.
A2, gradually increasing the pressure of each current calibration detection pressure sensor by using a pressure source to enable the pressure to reach each preset pressure test point, and recording the pressure to be used as each pressure test point condition of each current calibration detection pressure sensor.
It should be further noted that each pressure test point of each current calibration detection pressure sensor is a test point selected from each pressure within the working range of each current calibration detection pressure sensor.
Specifically, if a current calibration test pressure sensor has an operating range of 0 to 1000kPa, then the current calibration test pressure sensor's respective pressure test points include, but are not limited to, 0kPa, 250kPa, 500kPa, 750kPa, and 1000kPa.
A3, recording the output pressure of each current calibration detection pressure sensor under the conditions of each pressure test point, and recording the actual pressure of each current calibration detection pressure sensor corresponding to the reference pressure gauge under the conditions of each pressure test point.
The method is characterized in that the actual pressure of each current calibration detection pressure sensor corresponding to the reference pressure gauge under the conditions of each pressure test point is recorded to provide a standard pressure value for comparison and calibration, so that the accuracy and reliability of the sensor are ensured, the performance of the sensor is improved, the application safety is ensured, and the requirements of related standards and specifications are met.
And A4, repeatedly measuring each current calibration detection pressure sensor for a plurality of times under the conditions of each pressure test point to obtain the output pressure and the actual pressure of each current calibration detection pressure sensor and each detection of the corresponding reference pressure meter under the conditions of each pressure test point.
The output pressure and actual pressure analysis module is used for calculating the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test point and analyzing the difference degree of each current calibration detection pressure sensor.
As a preferable practical example, the specific calculation method of the pressure calibration value of each current calibration detection pressure sensor under each pressure test point condition includes: extracting the output pressure and the actual pressure of each current calibration detection pressure sensor and the corresponding reference pressure gauge detected each time under the condition of each pressure test point, respectively recording asWherein，The number of each pressure test point is given,For the number of pressure test points,，For the number of each test to be performed,The number of times of detection.
According to the calculation formulaObtaining the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test pointWhereinIs the firstAnd the current calibration detects the temperature and humidity corresponding to the pressure compensation value of the pressure sensor.
The reason why the pressure calibration values of the current calibration detection pressure sensors under the conditions of the pressure test points are analyzed based on the output pressures and the actual pressures detected by the current calibration detection pressure sensors and the corresponding reference pressure gauges under the conditions of the pressure test points is as follows: the accuracy of the pressure sensor is a key factor that directly affects the calibration value. Based on the output pressure and the actual pressure of each current calibration detection pressure sensor and the corresponding reference pressure gauge under each pressure test point condition, the pressure calibration value of each current calibration detection pressure sensor under each pressure test point condition is analyzed, so that the accuracy and the reliability of the calibration of each current calibration detection pressure sensor are guaranteed, the accuracy of the measurement result of each current calibration detection pressure sensor is guaranteed, and decision errors or safety accidents caused by measurement errors are avoided.
As a preferred practical example, the specific analysis manner of each current calibration detection pressure sensor includes: according to the analytical formulaObtaining the difference degree of each current calibration detection pressure sensorWhereinIs the allowable difference between the set output pressure and the actual pressure.
It should be further noted that, the reasons for analyzing the difference degree of each current calibration detection pressure sensor based on the output pressure and the actual pressure detected by each current calibration detection pressure sensor and the corresponding reference pressure gauge under each pressure test point condition are as follows: judging the difference between the output pressure and the actual pressure detected by each current calibration detection pressure sensor under the pressure test point condition, if the difference degree of a certain current calibration detection pressure sensor is larger than or equal to a set difference degree threshold value, indicating that the difference between the output pressure and the actual pressure detected by the current calibration detection pressure sensor under the pressure test point condition is overlarge, and further indicating that the current calibration detection pressure sensor possibly has faults and needs to be maintained.
If the difference degree of a certain current calibration detection pressure sensor is smaller than a set difference degree threshold value, the difference between the output pressure and the actual pressure detected by the current calibration detection pressure sensor under the pressure test point condition is in a permissible range, and further the current calibration detection pressure sensor part is indicated to have a fault, and maintenance processing is not needed.
And comparing the difference degree of each current calibration detection pressure sensor with a set difference degree threshold value, if the difference degree of a certain current calibration detection pressure sensor is larger than the difference degree threshold value, marking the current calibration detection pressure sensor as a maintenance requirement pressure sensor, further obtaining each maintenance requirement pressure sensor, feeding back corresponding numbers of the maintenance requirement pressure sensors, and carrying out maintenance treatment on the maintenance requirement pressure sensors.
It should be further noted that the maintenance process includes, but is not limited to: (1) Cleaning the surface and the inside of each maintenance-required pressure sensor, removing dust, dirt and other impurities, and keeping the maintenance-required pressure sensors clean and dry.
(2) And checking whether the circuit connection of each maintenance-required pressure sensor is firm, whether corrosion or damage occurs or not, and ensuring the normal circuit connection.
(3) Replacement of aged, worn or damaged components of the pressure sensor is required for each maintenance.
And the calibration adjustment module is used for automatically completing the calibration process of each current calibration detection pressure sensor and generating a detailed calibration report according to the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test point.
As a preferable practical example, the method uses calibration software to automatically calibrate the pressure of each current calibration detection pressure sensor under each pressure test point condition according to the pressure calibration value of each current calibration detection pressure sensor under each pressure test point condition, and automatically generates a calibration report of each current calibration detection pressure sensor.
It should be further noted that the calibration report of each current calibration detection pressure sensor includes, but is not limited to, a temperature and humidity corresponding pressure compensation value and a difference degree of each current calibration detection pressure sensor and a pressure calibration value thereof under each pressure test point condition.
The cloud database is used for storing standard calibration interval duration of each specified pressure sensor, storing the latest calibration time point of each specified pressure sensor, storing temperature and humidity corresponding to the basic temperature and humidity evaluation index of the pressure sensor, and storing the temperature and humidity evaluation index corresponding to the pressure compensation value corresponding to each temperature and humidity.
According to the invention, the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test point is calculated, and the difference degree of each current calibration detection pressure sensor is analyzed, so that the current calibration detection pressure sensors can be calibrated in time, the service life of each current calibration detection pressure sensor is prolonged, the replacement cost is reduced, whether the performance of each current calibration detection pressure sensor is reduced or not is found in the calibration process of each current calibration detection pressure sensor, the current calibration detection pressure sensors can be maintained in time, and the production risk caused by the faults of the pressure sensors is reduced.
The foregoing is merely illustrative and explanatory of the principles of this invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of this invention or beyond the scope of this invention as defined in the claims.
Claims (8)
1. A pressure detection circuit channel calibration system, characterized by: comprising the following steps:
The pressure sensor calibration detection analysis module is used for marking each pressure sensor to be remotely monitored as each specified pressure sensor, acquiring state data of each specified pressure sensor, and analyzing the calibration time modification requirement of each specified pressure sensor to obtain the pressure sensor of which each calibration time needs to be modified;
The current calibration detection pressure sensor acquisition module is used for acquiring calibration time points of the pressure sensors, which need to be modified in each calibration time, and analyzing the calibration time points according to the calibration time points to obtain each current calibration detection pressure sensor;
The temperature and humidity corresponding pressure compensation value analysis module is used for acquiring the environmental data of each current calibration detection pressure sensor and analyzing the temperature and humidity corresponding pressure compensation value of each current calibration detection pressure sensor;
the output pressure and actual pressure acquisition module is used for performing pressure test on each current calibration detection pressure sensor according to the pressure source equipment to acquire the output pressure and actual pressure detected by each current calibration detection pressure sensor and the corresponding reference pressure gauge under each pressure test point condition;
The output pressure and actual pressure analysis module is used for calculating the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test point and analyzing the difference degree of each current calibration detection pressure sensor;
The calibration adjustment module is used for automatically completing the calibration process of each current calibration detection pressure sensor and generating a detailed calibration report according to the pressure calibration value of each current calibration detection pressure sensor under the conditions of each pressure test point;
The cloud database is used for storing the standard calibration interval duration of each specified pressure sensor, storing the latest calibration time point of each specified pressure sensor, storing the temperature and humidity corresponding to the basic temperature and humidity evaluation index of the pressure sensor, and storing the temperature and humidity evaluation index corresponding to the pressure compensation value corresponding to each temperature and humidity;
in the process of analyzing the calibration time modification requirement of each specified pressure sensor, the calibration time modification requirement evaluation coefficient of each specified pressure sensor needs to be constructed, and the specific analysis mode is as follows:
extracting maintenance times, component replacement times, use times and use time length of each specified pressure sensor, and respectively recording as Wherein，The number of each pressure sensor is given,For the number of pressure sensors, the calibration time modification demand assessment coefficients for each specified pressure sensor are analyzedWhereinThe set allowable maintenance times, the component replacement allowable times, the reference use times and the reference use time period of the pressure sensor are respectively,Is a natural constant;
the pressure sensor needs to be modified for each calibration time, and the specific acquisition mode is as follows:
Comparing the calibration time modification demand evaluation coefficients of the specified pressure sensors with the set calibration time modification demand evaluation coefficient threshold values respectively, if the calibration time modification demand evaluation coefficient of a certain specified pressure sensor is larger than the calibration time modification demand evaluation coefficient threshold value, marking the specified pressure sensor as a pressure sensor with the required modification of the calibration time, otherwise marking the specified pressure sensor as a pressure sensor with the no modification of the calibration time, and further obtaining the pressure sensor with the required modification of the calibration time.
2. A pressure sensing circuit channel calibration system according to claim 1, wherein: the state data of each specified pressure sensor comprises maintenance times, component replacement times, use times and use time;
The environmental data of each current calibration detection pressure sensor comprises temperature and humidity.
3. A pressure sensing circuit channel calibration system according to claim 1, wherein: each current calibration detection pressure sensor comprises the following specific acquisition modes:
Extracting calibration time modification demand evaluation coefficients of pressure sensors, the calibration time modification demand evaluation coefficients of which are required to be modified for each calibration time, from the calibration time modification demand evaluation coefficients of each specified pressure sensor Wherein，The number of pressure sensors needs to be modified for each calibration time,The number of pressure sensors needs to be modified for calibration time, and；
According to the analytical formulaObtaining each calibration time requires modifying the calibration interval duration of the pressure sensorWhereinThe first selected from the standard calibration interval duration for each specified pressure sensor extracted from the databaseThe calibration time needs to modify the standard calibration interval duration of the pressure sensor;
Extracting the latest calibration time point of each specified pressure sensor from a database, screening the latest calibration time point of each pressure sensor needing to be modified in each calibration time from the latest calibration time point, and further adding the latest calibration time point and the corresponding calibration interval time length to obtain the calibration time point of each pressure sensor needing to be modified in each calibration time;
If the calibration time point of the pressure sensor to be modified at a certain calibration time coincides with the current time point, the pressure sensor to be modified at the calibration time is recorded as the current calibration detection pressure sensor, and then each current calibration detection pressure sensor is obtained.
4. A pressure sensing circuit channel calibration system according to claim 2, wherein: the specific analysis mode of the pressure compensation value of each current calibration detection pressure sensor is as follows:
Extracting the temperature of each current calibration detection pressure sensor And humidity ofWherein，The number of pressure sensors is detected for each current calibration,For the number of the current calibration detection pressure sensors, analyzing the temperature and humidity evaluation index of each current calibration detection pressure sensorWhereinThe temperature and the humidity corresponding to the temperature and humidity basic evaluation indexes of the pressure sensor stored in the database are respectively;
comparing the temperature and humidity evaluation index of each current calibration detection pressure sensor with the temperature and humidity evaluation index corresponding to the temperature and humidity corresponding pressure compensation value stored in the database to obtain the temperature and humidity corresponding pressure compensation value of each current calibration detection pressure sensor.
5. The pressure sensing circuit channel calibration system of claim 4, wherein: applying a known pressure value to each of the current calibration detection pressure sensors using a pressure source device, the specific operations of which include:
A1, performing zero calibration on each current calibration detection pressure sensor;
A2, gradually increasing the pressure of each current calibration detection pressure sensor by using a pressure source to enable the pressure to reach each preset pressure test point, and recording the pressure to be used as each pressure test point condition of each current calibration detection pressure sensor;
A3, recording the output pressure of each current calibration detection pressure sensor under the conditions of each pressure test point, and recording the actual pressure of each current calibration detection pressure sensor under the conditions of each pressure test point, corresponding to a reference pressure meter;
and A4, repeatedly measuring each current calibration detection pressure sensor for a plurality of times under the conditions of each pressure test point to obtain the output pressure and the actual pressure of each current calibration detection pressure sensor and each detection of the corresponding reference pressure meter under the conditions of each pressure test point.
6. The pressure sensing circuit channel calibration system of claim 5, wherein: the specific calculation mode of the pressure calibration value of each current calibration detection pressure sensor under the conditions of each pressure test point comprises the following steps:
Extracting the output pressure and the actual pressure of each current calibration detection pressure sensor and the corresponding reference pressure gauge detected each time under the condition of each pressure test point, respectively recording as Wherein，The number of each pressure test point is given,For the number of pressure test points,，For the number of each test to be performed,The detection times are;
According to the calculation formula Obtaining the pressure calibration value of each current calibration detection pressure sensor under the condition of each pressure test pointWhereinIs the firstAnd the current calibration detects the temperature and humidity corresponding to the pressure compensation value of the pressure sensor.
7. The pressure sensing circuit channel calibration system of claim 6, wherein: the specific analysis mode of the difference degree of each current calibration detection pressure sensor comprises the following steps:
According to the analytical formula Obtaining the difference degree of each current calibration detection pressure sensorWhereinAn allowable difference value between the set output pressure and the actual pressure;
And comparing the difference degree of each current calibration detection pressure sensor with a set difference degree threshold value, if the difference degree of a certain current calibration detection pressure sensor is larger than the difference degree threshold value, marking the current calibration detection pressure sensor as a maintenance requirement pressure sensor, further obtaining each maintenance requirement pressure sensor, feeding back corresponding numbers of the maintenance requirement pressure sensors, and carrying out maintenance treatment on the maintenance requirement pressure sensors.
8. The pressure sensing circuit channel calibration system of claim 7, wherein: and according to the pressure calibration value of each current calibration detection pressure sensor under the conditions of each pressure test point, using calibration software to automatically calibrate the pressure of each current calibration detection pressure sensor under the conditions of each pressure test point, and automatically generating a calibration report of each current calibration detection pressure sensor.
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