CN114441092A - Pressure transmitter calibration and inspection method, system and device and storage medium - Google Patents
Pressure transmitter calibration and inspection method, system and device and storage medium Download PDFInfo
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- CN114441092A CN114441092A CN202210124880.8A CN202210124880A CN114441092A CN 114441092 A CN114441092 A CN 114441092A CN 202210124880 A CN202210124880 A CN 202210124880A CN 114441092 A CN114441092 A CN 114441092A
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
Abstract
The application discloses a pressure transmitter calibration and inspection method, a system, a device and a computer readable storage medium, comprising the following steps: establishing a communication connection with the pressure transmitter; carrying out initialization configuration on the pressure transmitter according to preset equipment configuration information and sensor configuration information of the pressure transmitter; calibrating a pressure point and a temperature point of the pressure transmitter according to a preset calibration flow to obtain a calibration data table; setting different test pressure points and test temperature points, and carrying out precision test on the pressure transmitter to obtain a test result; and comparing the test result with the calibration data table to obtain a test result. Various configuration information and calibration test processes during initialization of the pressure transmitter are manufactured in advance, communication, calibration test and subsequent precision test processes with the pressure transmitter to be tested are automatically established, a precision judgment test result is finally obtained, automatic inspection of the precision of the pressure transmitter is achieved, inspection efficiency is improved, and labor cost is reduced.
Description
Technical Field
The invention relates to the field of automation, in particular to a pressure transmitter calibration and inspection method, a system, a device and a computer readable storage medium.
Background
A pressure transmitter refers to a device or apparatus that senses pressure and converts it into a usable output signal according to a certain rule. The pressure sensor converts pressure signals into electric signals, and the conversion module receives the electric signals and converts the electric signals into output signals. The general output signals include two-wire system standard output (4-20 Ma + HART), four-wire system standard output (MODBUS-RTU/RS-485) and the like.
The performance of the sensor is influenced by temperature and pressure measuring ranges, different sensors have discrete characteristics, the response speed of temperature signals and pressure signals is inconsistent, and the specification difference of the sensors with different specifications of different manufacturers is large. In order to eliminate zero point temperature drift, span temperature drift, nonlinear error, zero point drift and the like in the measurement process, the pressure transmitter needs to be calibrated and checked in advance, and relevant parameters need to be configured in advance.
Because the element characteristics of each pressure sensor and each conversion module are inconsistent and the performance is influenced by the temperature and the pressure measuring range, in order to eliminate the errors of zero temperature drift, measuring range temperature drift, nonlinearity, zero drift and the like in the measuring process, the pressure transmitter needs to be calibrated and checked before leaving a factory so as to ensure that the precision of the sensors meets the requirement.
In the existing method for calibrating the sensor manually, an operator can only configure and calibrate data of one pressure transmitter at a time, data parameters need to be issued manually, and the efficiency is extremely low. The sensor support protocols of different specifications are different, adaptation is needed, and the applicability is not strong enough. After the manual calibration is finished, precision test and temperature drift test are needed to be carried out additionally, and the integration is not high enough.
Therefore, a more automatic calibration and inspection method for the pressure transmitter is needed, and inspection efficiency is improved.
Disclosure of Invention
In view of the above, the present invention provides a calibration and inspection method, system, device and computer readable storage medium for pressure transmitter, which has higher automation and higher inspection efficiency. The specific scheme is as follows:
a calibration and verification method for a pressure transmitter comprises the following steps:
establishing a communication connection with the pressure transmitter;
carrying out initialization configuration on the pressure transmitter according to preset equipment configuration information and sensor configuration information of the pressure transmitter;
calibrating a pressure point and a temperature point of the pressure transmitter according to a preset calibration flow to obtain a calibration data table;
setting different test pressure points and test temperature points, and carrying out precision test on the pressure transmitter to obtain a test result;
and comparing the test result with the calibration data table to obtain a test result.
Optionally, the process of establishing a communication connection with a pressure transmitter includes:
establishing a communication connection with the pressure transmitter according to a communication mode supported by the pressure transmitter.
Optionally, the process of establishing a communication connection with the pressure transmitter according to the communication mode supported by the pressure transmitter includes:
selecting communication mode configuration information corresponding to the pressure transmitter according to the communication mode supported by the pressure transmitter;
and establishing a communication channel with the pressure transmitter according to the communication mode configuration information.
Optionally, the method further includes:
after communication channels are established with a plurality of pressure transmitters, all the established communication channels are traversed, and the connection state of each communication channel is determined.
Optionally, the process of calibrating the pressure point and the temperature point of the pressure transmitter according to a preset calibration flow to obtain the calibration data table includes:
setting a target temperature, and keeping the temperature of the test environment after the test environment reaches the target temperature;
judging whether the preset heat preservation time is reached;
if the heat preservation time is up, controlling the pressure of the test environment to reach the specified pressure;
after waiting for a preset delay time, calibrating the current temperature and pressure values of the test environment;
judging whether all pressure calibration points are calibrated at the current temperature;
if not, adjusting the specified pressure to be the next pressure calibration point for continuous calibration;
if all the temperature calibration is finished, judging whether all the temperatures are calibrated or not;
and if not, adjusting the target temperature to be the next temperature calibration point and continuing to calibrate until all the temperatures are calibrated.
The invention also discloses a calibration and inspection system of the pressure transmitter, which comprises:
the communication establishing module is used for establishing communication connection with the pressure transmitter;
the initialization module is used for carrying out initialization configuration on the pressure transmitter according to preset equipment configuration information and sensor configuration information of the pressure transmitter;
the calibration module is used for calibrating the pressure point and the temperature point of the pressure transmitter according to a preset calibration flow to obtain a calibration data table;
the testing module is used for setting different testing pressure points and testing temperature points and carrying out precision testing on the pressure transmitter to obtain a testing result;
and the checking module is used for comparing the test result with the calibration data table to obtain a checking result.
Optionally, the communication establishing module is specifically configured to establish a communication connection with the pressure transmitter according to a communication mode supported by the pressure transmitter.
Optionally, the calibration module includes:
the target temperature setting unit is used for setting a target temperature, and preserving heat after the test environment reaches the target temperature;
the heat preservation time judging unit is used for judging whether the preset heat preservation time is reached;
the specified pressure setting unit is used for controlling the pressure of the test environment to reach the specified pressure if the heat preservation time judgment unit judges that the heat preservation time is reached;
the temperature and pressure calibration unit is used for calibrating the current temperature and pressure values of the test environment after waiting for a preset delay time;
the pressure calibration judging unit is used for judging whether all pressure calibration points are calibrated at the current temperature;
the pressure cycle adjusting unit is used for adjusting the specified pressure to be the next pressure calibration point to continue calibration if the pressure calibration determining unit determines that the calibration is not finished;
the temperature calibration determining unit is used for judging whether all the temperatures are calibrated or not if the pressure calibration determining unit determines that all the temperatures are calibrated;
and the temperature cycle adjusting unit is used for adjusting the target temperature to be the next temperature calibration point to continue calibration until all the temperatures are calibrated.
The invention also discloses a calibration and inspection device of the pressure transmitter, which comprises:
a memory for storing a computer program;
a processor for executing said computer program to implement the pressure transmitter calibration verification method as described above.
The invention also discloses a computer readable storage medium, on which a computer program is stored, which, when executed by a processor, implements a pressure transmitter calibration verification method as described above.
The invention discloses a calibration and inspection method of a pressure transmitter, which comprises the following steps: establishing a communication connection with the pressure transmitter; performing initialization configuration on the pressure transmitter according to preset equipment configuration information and sensor configuration information of the pressure transmitter; calibrating a pressure point and a temperature point of the pressure transmitter according to a preset calibration flow to obtain a calibration data table; setting different test pressure points and test temperature points, and carrying out precision test on the pressure transmitter to obtain a test result; and comparing the test result with the calibration data table to obtain a test result.
According to the invention, through pre-manufacturing various configuration information when the pressure transmitter is initialized and the calibration test process, the communication with each test pressure transmitter is automatically established, the calibration test and the subsequent precision test process are automatically completed, and finally the test result capable of reflecting the precision level of the pressure transmitter is obtained, so that the automatic test of the precision of the pressure transmitter is realized, the test efficiency is improved, and the labor cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic flow chart of a calibration and inspection method for a pressure transmitter according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a calibration initialization process of a pressure transmitter according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another calibration and verification method for a pressure transmitter according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a calibration process of a pressure transmitter according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a calibration and checking system for a pressure transmitter according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The embodiment of the invention discloses a calibration and inspection method of a pressure transmitter, which is shown in figure 1 and comprises the following steps:
s11: a communication connection is established with the pressure transmitter.
Specifically, before testing, the pressure transmitter to be tested is firstly connected, one pressure transmitter can be connected independently for testing, and a plurality of pressure transmitters can be connected simultaneously for testing.
S12: and performing initialization configuration on the pressure transmitter according to preset equipment configuration information and sensor configuration information of the pressure transmitter.
Specifically, in order to quickly and automatically test a single pressure transmitter or a plurality of pressure transmitters, the device configuration information and the sensor configuration information for each pressure transmitter are pre-customized, so that after the connection with the pressure transmitter is established, the device configuration information and the sensor configuration information can be sent to the corresponding pressure transmitter, the initialization configuration of each pressure transmitter is completed, the operation of the pressure transmitter can be accurately controlled subsequently, and the test data of the pressure transmitter in each test can be monitored.
As shown in fig. 2, the device configuration information may include configuration setup information, device variable initialization configuration information, and device information initialization configuration information and loop current initialization information at the time of two-wire specification output or MODBUS-RTU parameter initialization information at the time of four-wire specification output.
Specifically, the configuration assembly information may include: 1. the model of the instrument; 2. equipment variable classification and type; 3. the production date; 4. an assembly number; 5. hardware, sensor information; 6. assembling materials; 7. PGA configuration; 8. small pressure cut off values, etc.
Specifically, the device variable initialization configuration information may include: 1. a display mode; 2. alarming a main variable; 3. a principal variable transfer characteristic; 4. a principal variable unit; 5. the upper limit of the measuring range; 6. the lower limit of the measuring range; 7. setting damping; 8. migrating a main variable zero point; 9. fine adjustment of the range of the primary variable, and the like.
Specifically, when the pressure transmitter uses a two-wire specification for output, for example, when a specification of 4 to 20mA + HART is adopted, the device information initialization configuration information may include: 1. HCF grade number; 2. number of master-to-slave HART preambles; 3. the HART command version; 4. a device version; 5. a device software version; 6. a hardware version; 7. a device ID; 8. number of slave-to-master HART preambles, etc.; the loop current initialization information may include: 1. DAC zero value; 2. DAC gain; 3. a fixed current mode; 4. polling addresses, etc.
Specifically, when the pressure transmitter uses a four-wire specification output, for example, when the MODBUS-RTU specification is adopted, the MODBUS-RTU parameter initialization information may include the pressure transmitter's: 1. baud rate; 2. checking mode; 3. a stop bit; 4. a data format; 5. slave addresses, etc.
Specifically, the sensor configuration information may include, for the pressure transmitter: 1. sensor information; 2. a variable unit; 3. measuring an upper limit and a lower limit; 4. minimum range, etc.
S13: and calibrating the pressure point and the temperature point of the pressure transmitter according to a preset calibration flow to obtain a calibration data table.
Specifically, after the pressure transmitter is initialized and configured, automatic calibration can be performed according to a preset calibration flow, so that an automatic calibration process is realized, a calibration data table after automatic calibration is finally obtained, and the calibration process is completed.
S14: and setting different testing pressure points and testing temperature points, and carrying out precision testing on the pressure transmitter to obtain a testing result.
Specifically, after calibration, different test pressure points and test temperature points are set according to a preset test method, and the pressure transmitter is subjected to precision test to obtain a test result, so that the test result which can be compared with calibration data is obtained.
Specifically, the test method may include a precision test and a temperature drift performance test, where the precision test is performed by first setting a test pressure point. According to different output specifications, at room temperature, carrying out output test on pressure points in a pressure range, testing the output accuracy of 4-20ma if the control pressure source is a first test point, if the control pressure source is two-wire system output, and testing the pressure value accuracy of MODBUS communication transmission if the control pressure source is four-wire system output, wherein the accuracy calculation mode is as follows: (measured value-set value)/full scale value, the pressure source is adjusted to a second test pressure point after the test is finished until all test pressure points are traversed.
Specifically, temperature drift testing is carried out, different temperature values under the working temperature are set, the temperature box is controlled to be the first temperature value for precision testing, and the temperature box is controlled to be the second temperature value after testing is finished until the temperature point is traversed and completed.
S15: and comparing the test result with the calibration data table to obtain a test result.
Specifically, a calibration error is obtained by comparing a temperature value and a pressure value which correspond to each other under the same pressure and the same temperature, a calibration result is finally obtained according to the magnitude of the error and a preset judgment standard, and the precision level of the pressure transmitter to be tested is determined.
Therefore, the embodiment of the invention realizes the automatic establishment of communication with each test pressure transmitter by pre-manufacturing various configuration information during the initialization of the pressure transmitter and the calibration test process, automatically completes the calibration test and the subsequent precision test process, and finally obtains the test result capable of reflecting the precision grade of the pressure transmitter, thereby realizing the automatic test of the precision of the pressure transmitter, improving the test efficiency and reducing the labor cost.
It can be understood that the embodiment of the invention can simultaneously carry out calibration and inspection on a plurality of pressure transmitters in parallel.
The embodiment of the invention discloses a specific pressure transmitter calibration and inspection method, and compared with the previous embodiment, the embodiment further explains and optimizes the technical scheme. Referring to fig. 3, specifically:
s21: and selecting communication mode configuration information corresponding to the pressure transmitter according to the communication mode supported by the pressure transmitter.
Specifically, since the communication channel of each pressure transmitter has different communication modes, it is necessary to first determine the communication mode supported by the pressure transmitter, and then select the corresponding communication mode configuration information for subsequent communication configuration.
S22: and establishing a communication channel with the pressure transmitter according to the communication mode configuration information.
Specifically, after the communication mode configuration information is determined, each pressure transmitter can be configured according to the communication mode configuration information corresponding to each pressure transmitter, and a communication channel with the pressure transmitter is established.
S23: after communication channels are established with the plurality of pressure transmitters, all the established communication channels are traversed, and the connection state of each communication channel is determined.
Specifically, after the communication channels are established by using the communication mode configuration information, it cannot be guaranteed that each communication channel is normally communicated, and it may be only shown that the establishment is successful but effective data transmission cannot be actually performed due to various reasons, such as parameter setting errors, etc., therefore, after each communication channel is established, whether each communication channel can be normally used is confirmed in a traversal manner, a basic instruction can be used to try to establish contact with the communication channels of the pressure transmitters, if a transmission instruction is not replied for a communication channel for several times, it can be determined that the connection of the channel fails, and a process test is continued on the next communication channel.
Specifically, by determining that the communication channels which are normal are faulty, only the pressure transmitter which successfully establishes the communication channels can be tested in the subsequent configuration process, and the pressure transmitter which does not successfully establish communication is prevented from carrying out an invalid test process.
S24: and performing initialization configuration on the pressure transmitter according to preset equipment configuration information and sensor configuration information of the pressure transmitter.
S25: and calibrating the pressure point and the temperature point of the pressure transmitter according to a preset calibration flow to obtain a calibration data table.
Specifically, referring to fig. 4, the calibration process may specifically include S251 to S258; wherein the content of the first and second substances,
s251: and setting a target temperature, and keeping the temperature after the test environment reaches the target temperature.
Specifically, after calibration is started, the target temperature to be measured for the first time is set, heat preservation is performed after the test environment reaches the target temperature, and the accuracy of the test environment is ensured by preserving the temperature and the air pressure of the test environment.
S252: judging whether the preset heat preservation time is reached;
s253: and if the holding time is up, controlling the pressure of the test environment to reach the specified pressure.
Specifically, since the test environment is known, the time required for the test environment to reach a steady state, i.e., the holding time, may be set in advance, and after the holding time is reached, the test environment will be stable, and then pressurization may be performed so that the pressure also reaches a specified value required for the test.
Specifically, before adjusting the pressure, at first can zero the pressure controller, reduce the error and ensure the precision, can carry out two cycles of pressure pre-compaction ageing simultaneously, set up appointed pressure promptly and carry out two cycles at pressure measurement range upper limit and lower limit, ensure that the pressure source can provide required pressure.
S254: and after waiting for the preset delay time, calibrating the current temperature and pressure values of the test environment.
Specifically, after the pressure and the temperature of the test environment are stabilized and the specified pressure and the target temperature can be reached after the preset delay time of the stage climbing is needed after the same pressurization, the current temperature and the pressure value of the test environment are calibrated again, and one-time calibration is completed.
S255: and judging whether all pressure calibration points are calibrated at the current temperature.
It can be understood that a plurality of pressure calibration points need to be calibrated at the same temperature, for example, as shown in the following table a, there are 7 corresponding pressure calibration points that need to be calibrated at the current temperature of 30 ℃, only after all the pressure calibration points at the current temperature are calibrated, the temperature is switched to the next temperature for calibration, and before that, the pressure is switched to complete the calibration of all the pressure calibration points at the current temperature.
Watch 1
| 30℃ | -90kPa | 0kPa | 150kPa | 300kPa | 450kPa | 600kPa | 750kPa |
S256: if not, the designated pressure is adjusted to be the next pressure calibration point for continuous calibration.
Specifically, for example, as shown in table one, if the current calibration is a pressure calibration point of 150kPa, and 4 pressure calibration points are left after the current temperature of 30 ℃, the specified pressure is adjusted to 300kPa, and the calibration is changed to the next pressure calibration point to continue the calibration.
S257: if all the temperature calibration is finished, judging whether all the temperatures are calibrated or not;
s258: and if not, adjusting the target temperature to be the next temperature calibration point and continuing to calibrate until all the temperatures are calibrated.
Specifically, all pressure calibrations at all temperatures are calibrated through continuous circulation, and all calibration processes are completed.
Specifically, if the output of the tested pressure transmitter channel is two-wire standard output (4-20 Ma + HART), the output needs to be calibrated.
Specifically, the temperature point number and the temperature value which need to be calibrated are determined and issued in the working temperature, the calibration range and the calibration point number are determined and issued in the range, the temperature box is automatically controlled to be the first temperature, the pressure source is controlled to be the first pressure point, the pressure transmitter of each channel is calibrated, the current temperature and the current pressure value are issued in the calibration process, the AD acquisition values corresponding to the temperature and the pressure under the condition are recorded, and a calibration data table is formed in a plurality of points. And after the calibration of the first pressure point is finished, controlling the pressure source to be a second pressure point until the calibration of the pressure point is finished, controlling the temperature box to be a second temperature point, and calibrating all the pressure points until the calibration of all the temperature points is finished.
In addition, after the tool calibration mode is exited, the data in the factory area can be limited from being rewritten.
S26: setting different test pressure points and test temperature points, and carrying out precision test on the pressure transmitter to obtain a test result;
s27: and comparing the test result with the calibration data table to obtain a test result.
Correspondingly, the embodiment of the invention also discloses a calibration and inspection system of the pressure transmitter, and as shown in fig. 5, the system comprises:
the communication establishing module 11 is used for establishing communication connection with the pressure transmitter;
the initialization module 12 is configured to perform initialization configuration on the pressure transmitter according to preset device configuration information and sensor configuration information of the pressure transmitter;
the calibration module 13 is configured to calibrate a pressure point and a temperature point of the pressure transmitter according to a preset calibration process to obtain a calibration data table;
the test module 14 is used for setting different test pressure points and test temperature points, and performing precision test on the pressure transmitter to obtain a test result;
and the checking module 15 is used for comparing the test result with the calibration data table to obtain a checking result.
Therefore, the embodiment of the invention realizes the automatic establishment of communication with each test pressure transmitter by pre-manufacturing various configuration information during the initialization of the pressure transmitter and the calibration test process, automatically finishes the calibration test and the subsequent precision test process, and finally obtains the test result capable of reflecting the precision grade of the pressure transmitter, thereby realizing the automatic test of the precision of the pressure transmitter, improving the test efficiency and reducing the labor cost.
Specifically, the communication establishing module 11 is specifically configured to establish a communication connection with the pressure transmitter according to a communication mode supported by the pressure transmitter.
Specifically, the communication establishing module 11 may include: a configuration information selection unit and a communication channel establishment unit; wherein the content of the first and second substances,
the configuration information selection unit is used for selecting communication mode configuration information corresponding to the pressure transmitter according to the communication mode supported by the pressure transmitter;
and the communication channel establishing unit is used for establishing a communication channel with the pressure transmitter according to the communication mode configuration information.
Specifically, the method may further include: and the channel state judging module is used for traversing all the established communication channels and determining the connection state of each communication channel after the communication channels are established with the plurality of pressure transmitters.
Specifically, the calibration module 13 may include:
the target temperature setting unit is used for setting a target temperature, and preserving heat after the test environment reaches the target temperature;
the heat preservation time judging unit is used for judging whether the preset heat preservation time is reached;
the specified pressure setting unit is used for controlling the pressure of the test environment to reach the specified pressure if the heat preservation time judgment unit judges that the heat preservation time is reached;
the temperature and pressure calibration unit is used for calibrating the current temperature and pressure values of the test environment after waiting for the preset delay time;
the pressure calibration judging unit is used for judging whether all pressure calibration points are calibrated at the current temperature;
the pressure cycle adjusting unit is used for adjusting the specified pressure to be the next pressure calibration point to continue calibration if the pressure calibration determining unit determines that the calibration is not finished;
the temperature calibration determining unit is used for judging whether all the temperatures are calibrated or not if the pressure calibration determining unit determines that all the temperatures are calibrated;
and the temperature cycle adjusting unit is used for adjusting the target temperature to be the next temperature calibration point to continue calibration until all the temperatures are calibrated.
In addition, the embodiment of the invention also discloses a calibration and inspection device of the pressure transmitter, which comprises:
a memory for storing a computer program;
a processor for executing a computer program to implement the pressure transmitter calibration verification method as described above.
In addition, the embodiment of the invention also discloses a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the calibration and verification method of the pressure transmitter is realized.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The technical content provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the above description of the examples is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A calibration and inspection method for a pressure transmitter is characterized by comprising the following steps:
establishing a communication connection with the pressure transmitter;
carrying out initialization configuration on the pressure transmitter according to preset equipment configuration information and sensor configuration information of the pressure transmitter;
calibrating a pressure point and a temperature point of the pressure transmitter according to a preset calibration flow to obtain a calibration data table;
setting different test pressure points and test temperature points, and carrying out precision test on the pressure transmitter to obtain a test result;
and comparing the test result with the calibration data table to obtain a test result.
2. The method of claim 1, wherein said process of establishing a communication link with a pressure transmitter comprises:
establishing a communication connection with the pressure transmitter according to a communication mode supported by the pressure transmitter.
3. The method of claim 2, wherein said process of establishing a communication connection with said pressure transmitter based on a communication mode supported by said pressure transmitter comprises:
selecting communication mode configuration information corresponding to the pressure transmitter according to the communication mode supported by the pressure transmitter;
and establishing a communication channel with the pressure transmitter according to the communication mode configuration information.
4. The method of claim 1, further comprising:
after communication channels are established with a plurality of pressure transmitters, all the established communication channels are traversed, and the connection state of each communication channel is determined.
5. The method for calibrating and checking a pressure transmitter according to any one of claims 1 to 4, wherein the process of calibrating the pressure point and the temperature point of the pressure transmitter according to a preset calibration procedure to obtain the calibration data table comprises:
setting a target temperature, and keeping the temperature of the test environment after the test environment reaches the target temperature;
judging whether the preset heat preservation time is reached;
if the heat preservation time is reached, controlling the pressure of the test environment to reach the specified pressure;
after waiting for a preset delay time, calibrating the current temperature and pressure values of the test environment;
judging whether all pressure calibration points are calibrated at the current temperature;
if not, adjusting the specified pressure to be the next pressure calibration point for continuous calibration;
if all the temperature calibration is finished, judging whether all the temperatures are calibrated or not;
and if the calibration is not finished, adjusting the target temperature to be the next temperature calibration point and continuing to calibrate until all the temperatures are calibrated.
6. A pressure transmitter calibration verification system, comprising:
the communication establishing module is used for establishing communication connection with the pressure transmitter;
the initialization module is used for carrying out initialization configuration on the pressure transmitter according to preset equipment configuration information and sensor configuration information of the pressure transmitter;
the calibration module is used for calibrating the pressure point and the temperature point of the pressure transmitter according to a preset calibration flow to obtain a calibration data table;
the testing module is used for setting different testing pressure points and testing temperature points and carrying out precision testing on the pressure transmitter to obtain a testing result;
and the checking module is used for comparing the test result with the calibration data table to obtain a checking result.
7. The pressure transmitter calibration verification system of claim 6, wherein the communication establishing module is specifically configured to establish a communication connection with the pressure transmitter according to a communication mode supported by the pressure transmitter.
8. The pressure transmitter calibration verification system of claim 6 or 7, wherein the calibration module comprises:
the target temperature setting unit is used for setting a target temperature, and preserving heat after the test environment reaches the target temperature;
the heat preservation time judging unit is used for judging whether the preset heat preservation time is reached;
the specified pressure setting unit is used for controlling the pressure of the test environment to reach the specified pressure if the heat preservation time judgment unit judges that the heat preservation time is reached;
the temperature and pressure calibration unit is used for calibrating the current temperature and pressure values of the test environment after waiting for a preset delay time;
the pressure calibration judging unit is used for judging whether all pressure calibration points at the current temperature are calibrated;
the pressure cycle adjusting unit is used for adjusting the specified pressure to be the next pressure calibration point to continue calibration if the pressure calibration determining unit determines that the calibration is not finished;
the temperature calibration determining unit is used for judging whether all the temperatures are calibrated or not if the pressure calibration determining unit determines that all the temperatures are calibrated;
and the temperature cycle adjusting unit is used for adjusting the target temperature to be the next temperature calibration point to continue calibration until all the temperatures are calibrated.
9. A pressure transmitter calibration verification device is characterized by comprising:
a memory for storing a computer program;
a processor for executing said computer program to implement the pressure transmitter calibration verification method of any of claims 1 to 5.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method for calibration verification of a pressure transmitter of any one of claims 1 to 5.
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| CN202210124880.8A Pending CN114441092A (en) | 2022-02-10 | 2022-02-10 | Pressure transmitter calibration and inspection method, system and device and storage medium |
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