CN213748898U - Measurement calibration device and system, pressure calibrator, pressure gauge and temperature calibrator - Google Patents
Measurement calibration device and system, pressure calibrator, pressure gauge and temperature calibrator Download PDFInfo
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- CN213748898U CN213748898U CN202022991200.1U CN202022991200U CN213748898U CN 213748898 U CN213748898 U CN 213748898U CN 202022991200 U CN202022991200 U CN 202022991200U CN 213748898 U CN213748898 U CN 213748898U
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Abstract
The utility model provides a measurement calibration equipment and system, pressure calibration equipment, pressure gauge, temperature calibration equipment for carry out the check-up to on-the-spot measurement instrument and meter, including standard measurement module, control module and communication interface module, standard measurement module and communication interface module respectively with control module signal connection, control module is configured to when detecting that external wireless communication device disposes in communication interface module, establishes the connection through external wireless communication device and long-range check-up management platform, through the utility model discloses a communication interface and control module configuration can make calibration equipment make communication function and communication equipment mutual independence, improve equipment commonality.
Description
Technical Field
The utility model relates to a measurement calibration field, in particular to measurement calibration equipment, based on this measurement calibration equipment's measurement management system to and to the pressure check gauge and the pressure gauge of specific measurement object pressure check, to the temperature check gauge of specific measurement object temperature check.
Background
The instruments and meters are widely applied to the field of industrial metering and detecting, and the quantity is very large, only taking pressure meters and thermometers as examples, the usage amount in a single scene of a power plant, an oil-gas well and the like can reach thousands or even more, and in order to ensure the normal use of the instruments and meters, the instruments and meters need to be regularly calibrated/verified.
Taking a pressure gauge as an example, a general work flow is that an operator carries calibration equipment to a site where a pressure gauge to be calibrated is located, calibration data is stored in a terminal after each pressure gauge to be calibrated is calibrated one by one, and the calibration data is uploaded to a management system through computer introduction after the pressure gauge returns from the site.
In view of the above situation, some improvements have been made in the prior art, such as a pressure calibration device, which includes a pressure calibration unit and a main control unit electrically connected to the pressure calibration unit, wherein the pressure calibration unit is externally connected to a calibrated pressure instrument, the pressure calibration device further integrates a communication module, the communication module is electrically connected to the main control unit, and is accessed to a remote database through a network, and is used for downloading historical calibration information and a calibration scheme from the remote database in real time and uploading generated calibration data to the remote database in real time, and the calibration scheme includes an automatic calibration program for performing calibration operations; the problem that prior art exists has been solved to above-mentioned scheme, convenient operation, work efficiency is high.
However, utility model people are accomplishing the utility model discloses an in-process has found some new problems again:
1. some earlier calibration devices, which do not incorporate a communication module, can still be used normally, creating a waste of resources if simply replaced with a prior art improvement;
2. when the communication module is integrated, based on the purpose of industrial production, a general communication module is generally adopted as much as possible, but when a specific user group is faced, the configuration of the communication module is not allowed based on the requirements of technical confidentiality and the like, even if a special communication module is selected in the manufacturing stage, the communication module also has extremely high confidentiality grade requirements on manufacturers, and is not beneficial to industrial scale production;
3. the available communication specifications are different in different countries and regions, wherein the import and export related to the communication modules bring a lot of trouble and cost to enterprises, even if the communication barriers between countries and regions are not considered, the optimal communication channel is different in different field environments, for example, a communication technology (such as NB-loT) with a long transmission distance is required in some open and remote scenes, and the near field communication configuration (such as ZigBee) arranged in the scenes such as ocean, underground and the like has a better communication effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a measurement calibration equipment, based on this measurement calibration equipment wireless communication device, measurement management system to and to the pressure check gauge and the pressure gauge of specific measurement object pressure check, to the temperature check gauge of specific measurement object temperature check, measure the problem that exists among the prior art in field to measure the detection.
The utility model provides a measurement calibration equipment, be used for proofreading and correct the check-up to on-the-spot metering instrument, including standard measurement module, control module and communication interface module, standard measurement module and communication interface module are connected with control module signal respectively, standard measurement module is used for measuring the measurement parameter that on-the-spot metering instrument corresponds and provides the standard value, communication interface module includes that a general wired interface is used for measurement calibration equipment and external network's communication, control module is configured to when detecting that there is external wireless communication device to dispose in communication interface module, establish data channel through external wireless communication device and remote check-up management platform, receive the check-up information template and upload the check-up information data after accomplishing the check-up to remote check-up management platform from remote check-up management platform.
A field metrology instrument refers to an instrument or meter that is placed in the field for measuring a corresponding one or more industrial parameters.
Verification includes certification, calibration, and other activities similar to calibration that assess the accuracy of the measurement of a metrology instrument.
The calibrated instrument refers to a field metering instrument which is calibrated by using the metering and calibrating device.
The standard measuring module is an industrial parameter measuring module with credible accuracy and higher measuring accuracy than the calibrated instrument, and can be a feasible one of a sensor, a measuring component provided with a signal acquisition circuit and the sensor and a high-precision measuring instrument according to a signal interaction mode with the control module; the standard measuring module outputs a measured value after the measurement is finished, and the accuracy and the measuring precision of the standard measuring module are superior to those of the calibrated instrument, so the value generated by the standard measuring module can be used as the standard value of the corresponding metering parameter.
The external wireless communication device and the communication interface module have mutually adaptable universal wired interfaces, for example, the communication interface module includes a USB interface, and correspondingly, the external wireless communication device includes a USB connector, so that the communication interface module and the external wireless communication device can be adaptively connected to realize signal intercommunication.
The external wireless communication device is not any communication device, but is a communication device suitable for the field communication condition of the calibrated instrument, namely, the external wireless communication device can establish communication link with the remote calibration management platform in the field environment.
The control module is preset with a communication program for the remote verification management platform, for example, the communication program comprises a communication protocol, registration verification information and the like, when the metering verification device and the remote verification management platform establish communication connection, the metering verification device can be identified by the remote verification management platform, and the metering verification device and the remote verification management platform can communicate with each other through verification related data.
The control module can detect whether the communication interface module is connected with the external wireless communication device, when the control module detects that the external wireless communication device is configured on the communication interface module, the control module tries and establishes a data channel with the remote checking management platform through the external wireless communication device, when the checking work starts, the metering checking device reads the checking information template from the remote checking management platform, checks according to the checking information template, collects data required in the checking information template, and after the checking is completed, the control module edits the checking information data according to the requirements of the checking information template and uploads the data to the remote checking management platform.
The metering checking device can be provided with an interaction module, such as a key and a display screen, preferably, the metering checking device can be provided with a touch display screen, the interaction module is in signal connection with the control module, the control module is configured to edit and send a checking information template to the interaction module when checking work starts, the checking information template is displayed through the interaction module, an operator can know checking contents, the checking information data can be edited and sent to the interaction module to be displayed after checking is completed, the operator can know and analyze checking result conditions on site, in addition, before the checking work starts and in the working process, the operator can input instructions through the interaction module to control and manage the checking work, such as editing the checking information template on site, manually inputting partial checking information data and the like.
The metering calibration device can be provided with a wireless communication module capable of being in adaptive connection with the instrument to be calibrated, such as a Bluetooth module, the wireless communication module is in signal connection with the control module, the control module is configured to enable the metering calibration device to be in adaptive connection with the instrument to be calibrated when the instrument to be calibrated is detected through the wireless communication module, and the control module is further configured to read the current reading from the instrument to be calibrated through the wireless communication module.
Based on the metering and checking device, a metering management system can be built, the metering management system is used for managing field metering instruments and meters and comprises a remote checking management platform, a managed instrument and the metering and checking device, the managed instrument and the metering and checking device are used for measuring the same metering parameters, a first data channel is built between the remote checking management platform and the managed instrument, when the managed instrument needs to be checked, the metering and checking device is used for checking, a wireless communication module is configured for the metering and checking device, a second data channel is built between the remote checking management platform and the metering and checking device, and at the moment, the remote checking management platform, the managed instrument and the metering and checking device are connected into the same network.
In a preferred embodiment, the remote verification management platform is configured in the cloud.
During calibration, the control module is configured to read a standard value from the standard measurement module according to a target metering value and send a reading request to the remote calibration management platform at the same time, the remote calibration management platform reads measurement data from a managed instrument as a calibrated value according to the reading request, the remote calibration management platform feeds the calibrated value back to the metering calibration device, and the control module obtains the calibrated value through the communication interface module; the control module calculates the difference value between the corrected value and the standard value to obtain the indicating value error, obtains the allowed error of the corrected instrument (the allowed error may be contained in the verification information template) from the remote verification management platform, and sends the standard value, the corrected value, the indicating value error and the allowed error data to the interaction module for displaying.
Before and after the verification process, according to the instruction, the control module is configured to send a historical data request to a remote verification management platform, the remote verification management platform reads historical verification data from a remote database/a to-be-verified instrument according to the historical data request and feeds the historical verification data back to the metering verification device, and the control module obtains the historical verification data through a communication interface module; during the verification process or after the verification is completed, the control module can extract corresponding historical verification data and a corrected value (a correction method)/standard value (a reverse correction method) item by item according to a target detection value required by the verification information template and send the historical verification data and the corrected value/standard value (the reverse correction method) to the interaction module for displaying.
Further preferred or limited, there are the following schemes:
the calibrated instrument is a pressure gauge, and correspondingly, the metering calibration device is a pressure calibration instrument.
The pressure calibrator comprises a pressure generation module, a pressure distribution channel, a pressure control assembly, a pressure interface assembly, a pressure measurement module, a control module and a communication interface module; the pressure generation module is used for pressurizing a pressure medium (such as gas) so as to provide a pressure environment meeting a target pressure value; the pressure distribution channel is a communicated pressure distribution medium pipeline, one end of the pressure distribution channel is communicated with the pressure generation module, a pressure valve is arranged near the communication position, the other end of the pressure distribution channel is communicated with the atmosphere, and a pressure discharge valve is arranged near the communication position; the pressure interface assembly comprises a first pressure interface for being accessed by the pressure meter to be calibrated and a second pressure interface for being configured by the pressure measurement module, a first pressure interface valve for controlling the opening and closing of the first pressure interface is arranged near the first pressure interface, a second pressure interface valve for controlling the opening and closing of the second pressure interface is arranged near the second pressure interface, and the first pressure interface is communicated with the second pressure interface through a pressure distribution channel; the pressure control assembly comprises a pressure regulating valve arranged in the pressure distribution channel and a voltage stabilizer connected with the pressure regulating valve in series, the voltage stabilizer is arranged between the pressure regulating valve and the pressure valve, so that a pressure distribution medium entering from the pressure generation module enters the voltage stabilizer, the voltage stabilizer is a pressure container so as to reduce the direct influence of the pressure generation module on the medium pressure in the pressure distribution channel, the pressure regulating valve can further finely adjust the pressure distribution medium passing through the pressure regulator so as to enable the vicinity of the pressure interface assembly to reach a target pressure value, the pressure generation module, the pressure valve and the pressure discharge valve, the first pressure interface valve, the second pressure interface valve and the pressure regulating valve are respectively in signal connection with the control module and controlled by the control module, the control module is respectively in signal connection with the pressure measurement module and the communication interface module, the control module can read a pressure measurement value (standard value) from the pressure measurement module, and the control module can perform data interaction with the communication interface module.
The control module of the pressure check meter is configured to establish a data channel through the external wireless communication device and the remote check management platform and receive the pressure check information template from the remote check management platform when detecting that the external wireless communication device is configured in the communication interface module; further, the control module is configured to extract a target pressure value from the pressure verification information template, control the first pressure interface valve and the second pressure interface valve to be opened, close the pressure discharge valve, pressurize the pressure generation module, read a current pressure value from the pressure measurement module, and perform closed-loop control on the pressurization valve and the pressure regulating valve according to the current pressure value so that the vicinity of the first pressure interface and the second pressure interface reaches and stabilizes at the target pressure value.
The pressure calibrator comprises a wireless communication module which can be in adaptive connection with a calibrated pressure gauge, and a control module is configured to control the wireless communication module to be in adaptive connection with the calibrated pressure gauge; further, the control module is configured to read a pressure measurement (calibrated value) from the calibrated pressure gauge via the wireless communication module when the target pressure values are reached and stabilized near the first pressure interface and the second pressure interface.
The control module of the pressure calibrator is configured to send a reading request to a remote calibration management platform through an external wireless communication device when the pressure values near the first pressure interface and the second pressure interface reach and stabilize at the target pressure values, and the remote calibration management platform reads pressure measurement values from the calibrated pressure gauge and feeds the pressure measurement values back to the pressure calibrator.
The calibrated instrument is a pressure gauge, and correspondingly, the metering and checking device is a standard pressure gauge with a pressure checking function.
The standard pressure gauge comprises a pressure measuring module, a control module and a communication interface module.
The calibrated instrument is a thermometer (also can be a temperature sensor, such as a thermocouple), and correspondingly, the metering and verifying device is a temperature calibrator.
The temperature calibrator comprises a temperature control module, a temperature control cavity, a temperature measurement module, a control module and a communication interface module; the temperature control module is arranged near the temperature control cavity, the temperature in the temperature control cavity can be adjusted by the temperature control module, the temperature control cavity is used for accommodating a measuring end of the temperature meter to be calibrated and providing a target temperature environment for the measuring end, the measuring end of the temperature measuring module is arranged in the temperature control cavity and measures the temperature in the temperature control cavity, and the control module is in signal connection with the temperature measuring module, the temperature control module and the communication interface module respectively.
The control module of the temperature check meter is configured to establish a data channel through the external wireless communication device and the remote check management platform and receive the temperature check information template from the remote check management platform when detecting that the external wireless communication device is configured in the communication interface module; further, the control module is configured to extract a target temperature value from the temperature verification information template, and the control module is configured to read a current temperature value from the temperature measurement module and perform closed-loop control on the temperature control module accordingly so that the temperature in the temperature control cavity reaches and stabilizes at the target temperature value.
The communication interface module comprises two wired interfaces, wherein one wired interface is used for being in adaptive connection with a signal output end of the temperature meter to be calibrated, for example, when the temperature meter to be calibrated is a digital temperature meter and outputs a digital signal, the wired interface is a digital signal interface, and when the temperature meter to be calibrated is a thermocouple, the wired interface is an electric measurement interface so as to receive an electric analog signal (thermoelectromotive force); further, the control module is configured to read a temperature measurement (calibrated value) from the calibrated temperature table via the wired interface when the temperature in the temperature-controlled chamber reaches and stabilizes at the target temperature value.
The control module of the temperature check meter is configured to send a reading request to the remote check management platform through the external wireless communication device when the temperature in the temperature control cavity reaches and stabilizes at a target temperature value, and the remote check management platform reads a temperature measurement value from the temperature-to-be-checked meter and feeds the temperature measurement value back to the temperature check meter.
Has the advantages that:
through the configuration of the communication interface and the control module of the utility model, the communication function and the communication equipment can be mutually independent by the checking equipment, and the universal manufacture and configuration of the equipment can be realized as far as possible in the production and manufacture stage for the checking equipment manufacturer without changing according to the complex requirements of users, thereby improving the production efficiency and reducing the production cost; for a user, the best communication means can be selected and matched under different scenes according to the requirements of the user, so that one device can meet multiple application scenes, the use efficiency is improved, and the use cost is reduced.
Drawings
Fig. 1 is the gas circuit connection diagram of the pressure calibration device of the present invention.
Fig. 2 is an electrical connection schematic diagram of the pressure calibration device of the present invention.
Fig. 3 is a schematic connection diagram of a pressure calibration device according to the present invention in a communication scenario.
Fig. 4 is a flowchart illustrating a control module of the pressure calibration apparatus of the present invention.
Fig. 5 is a schematic connection diagram of another pressure calibration apparatus according to the present invention.
Reference numerals:
11. the pressure measurement device comprises a control module, 12, a driving module, 13, a pressure measurement module, 14, a communication interface module, 15, an interaction module, 16, a battery module, 173, a standard interface, 174, a calibrated interface, 181, a pressure inlet valve, 182, a pressure discharge valve, 183, a standard interface valve, 184, a detected interface valve, 185, a voltage stabilizer, 186, a pressure regulating valve, 19 and a pressure distribution channel.
The open double arrows in fig. 3 and 5 indicate remote wireless communication.
Detailed Description
Detailed description of the preferred embodiment
The metering instruments needing periodic calibration comprise a first pressure gauge, a second pressure gauge and a third pressure gauge; the first pressure gauge is calibrated and managed by a local management platform, the second pressure gauge and the third pressure gauge are calibrated and managed by a remote management platform arranged at the cloud end, and data are isolated between the local management platform and the remote management platform.
The first pressure gauge is communicated with the local management platform through a wired connection mode, the first pressure gauge is located in a pair of outer communication isolation areas, and a plurality of ZigBee communication points are arranged in the outer communication isolation areas and used for in-field communication.
A 5G communication module is arranged in the second pressure gauge, and the second pressure gauge is in data communication with the remote management platform through the 5G communication module; the third manometer is a mechanical pointer manometer, and the remote management platform storage has the basic information and the historical calibration data of third manometer, and the third manometer sets up in a remote oil well, and the oil well control site is equipped with the WIFI signal that covers the third manometer, and the oil well control site can be connected with the internet through the satellite communication device of configuration.
The first pressure gauge, the second pressure gauge and the third pressure gauge are periodically calibrated by using a pressure calibrator, as shown in fig. 1 and 2, the pressure calibrator includes a pressure generating module 10, a pressure measuring module 13, a driving module 12, a control module 11, a communication interface module 14, an interaction module 15, a battery module 16, a pressure interface assembly, a pressure control assembly and a pressure distribution channel 19.
The pressure generating module 10 includes a small air pump and a small motor, and the small motor drives the small air pump to work to provide a required air pressure value.
The pressure interface assembly comprises a standard interface 173 and a calibrated interface 174, the standard interface 173 is used for setting the pressure measuring module 13, and the calibrated interface 174 is used for accessing a calibrated pressure meter.
The pressure distribution channel is in air path communication with the small air pump, the standard interface 173 and the calibrated interface 174.
The pressure control assembly is used for controlling the air pressure in the pressure distribution channel and comprises an air inlet valve 181, a pressure discharge valve 182, a standard interface valve 183, a detected interface valve 184, a pressure stabilizer 185 and a pressure regulating valve 186; a pressure inlet valve 181 arranged in the pressure distribution channel and near the air pump, wherein the pressure inlet valve 181 is used for controlling the pressurization of the air pump in the pressure distribution channel 19; one end of the pressure distribution channel 19 is provided with a pressure discharge port 192 communicated with the atmosphere, and a pressure discharge valve 182 which is arranged near the pressure discharge port 192 and is used for controlling the opening and closing of the pressure discharge port 192 is arranged; a standard interface valve 183 is arranged near the standard interface 173, and the standard interface valve 183 is used for controlling the air passage communication between the standard interface 173 and the pressure distribution channel 19; a calibrated port valve 184 is arranged near the calibrated port 174, and the calibrated port valve 184 is used for controlling the air passage communication between the calibrated port 174 and the pressure distribution channel 19; the pressure stabilizer 185 and the pressure regulating valve 186 are arranged in the pressure distribution channel 19 and between the pressure interface assembly 173 and the air passage of the pressure inlet valve 181, the pressure stabilizer 185 is a pressure container and is arranged between the pressure regulating valve 186 and the pressure inlet valve 181, so that the influence of the pressure change of the air pump on the pressure in the pressure distribution channel 19 is reduced, and the pressure regulating valve 186 can finely regulate the air pressure in the pressure distribution channel 19.
The pressure measurement module 13 includes a high-precision pressure sensor disposed in the standard interface 183 to obtain a pressure signal (analog signal), and a pressure acquisition circuit to obtain the pressure signal from the pressure sensor and convert it into pressure data (digital signal).
The interactive module 15 includes a touch screen for receiving operation instructions and displaying calibration related information.
The communication interface module 14 is a USB interface for connecting an external wireless communication device.
Be equipped with controllable distribution circuit on drive module 12, drive module 12 and power module 16 electricity are connected, thereby obtain the electric energy, drive module 12 respectively with interactive module 15, the small-size motor of pressure generation module 10, advance pressure valve 181, pressure relief valve 182, standard interface valve 183, it is connected to be examined interface valve 184 and air-vent valve 186 electricity, thereby realize the power supply control to each consumer part, drive module 12 and control module 11 electricity are connected, can control drive module 12 through this electricity connection line control module 11, and then realize the on-off control to each consumer part.
The control module 11 is respectively in signal connection with the pressure acquisition circuit of the pressure measurement module 13, the interaction module 15 and the communication interface module 14, so that data interaction is realized.
In this embodiment, according to different conditions of each calibrated pressure gauge, a user carries a ZigBee communication block, a NBloT communication block and a WIFI communication block for on-site standby, the ZigBee communication block is a wireless communication device and at least comprises a USB connector arranged on the surface of the device and a ZigBee communication module in signal connection with the USB connector, the ZigBee communication block can provide communication means support based on the ZigBee technology for related devices, the NBloT communication block is similar to the WIFI communication block, and description is not repeated here, and in other embodiments, other wireless communication devices can be optionally configured.
Presetting, logging the pressure calibrator into a local management platform and a remote management platform, so that the pressure calibrator has access and data reading rights on the two platforms; and presetting, writing communication programs for the two platforms, such as a communication protocol, registration verification information and the like, in the pressure calibrator.
As shown in fig. 3 and 4, when the first pressure gauge is calibrated on site, the ZigBee communication block is connected to the communication interface module 14 of the pressure calibrator, the control module 11 is configured to periodically detect the connection condition of the communication interface module 14, when it is detected that the ZigBee communication block is connected to the communication interface module 14, the control module 11 is configured to determine that the ZigBee communication block can be connected to an external network according to the communication signal type (ZigBee) and attempt to connect with a corresponding local management platform, and after the mutual authentication is passed, a data channel is established between the local management platform and the pressure calibrator.
The control module 11 is configured to request a calibration information template to the local management platform after the data channel is established, and the default is that the local management platform transmits the calibration information template to the pressure calibrator according to a list of pressure gauges which may need to be calibrated at present, the control module 11 receives the calibration information template and prompts through the interaction module 15, and an operator can select the calibration information template (when a plurality of calibrated pressure gauges exist at the same time) or edit the calibration information template on the interaction module 15; the comparison is realized accurately, can read the characteristic of first manometer through interactive module 15, for example scan the two-dimensional code that sets up on the first manometer (need interactive module to contain camera or similar image acquisition device), for example again by operator's manual input manometer code, control module 11 receives first manometer characteristic information and sends to local management platform, and local management platform can transmit the calibration information template of first manometer to the pressure check gauge accurately.
The control module 11 extracts a target pressure value (generally a plurality of target pressure values) in the calibration information template, and in a calibration method working mode, the control module 11 starts the pressure generation module 10 and opens the pressure inlet valve 181 by controlling the driving module 12, the pressure control method comprises the steps that a standard interface valve 183, a detected interface valve 184 and a pressure relief valve 182 are closed, a control module 11 periodically reads a current pressure value from a pressure measurement module 13 and performs closed-loop control on a switch of the pressure relief valve 186 according to the current pressure value, so that a measured value of the pressure measurement module 13 reaches and is stabilized at a target pressure value, the control module 11 requests a current indication value of a first pressure meter from a local management platform, the local management platform reads the current indication value from the first pressure meter and feeds back the current indication value to a pressure calibrator, and the control module 11 calculates a difference value between the current measured value (standard value) of the pressure measurement module 13 and the current indication value (calibrated value) of the first pressure meter to obtain an indication error corresponding to the target pressure value; when a plurality of target pressure values exist, the pressure values are detected one by one in a boosting mode according to the pressure values from low to high, after the highest target pressure value is measured, the pressure is detected one by one in a reducing mode, namely, the two times of measurement of each target pressure value are completed through boosting/reducing, according to the calibration requirements, the process can be repeated until one or more groups of calibration information data meeting the requirements are obtained, and each group of calibration information data comprises standard values, corrected values and indicating value errors corresponding to all the target pressure values listed in the calibration information template.
The control module 11 is configured to upload the calibration information data to a local management platform through the communication interface module 14 and the ZigBee communication block for real-time reference and management.
When the second pressure gauge is calibrated in the field, the NBlot communication block is accessed into the communication interface module 14 of the pressure calibrator, and the control module 11 is configured to periodically detect the access condition of the communication interface module 14, similar to the calibration in the field of the first pressure gauge; when detecting that the NBloT communication block is accessed, the control module 11 is configured to determine that the external network can be accessed according to the communication signal type (NBloT) and attempt to connect with a corresponding remote management platform, and after mutual authentication is passed, establish a data channel between the remote management platform and the pressure calibrator; after the data channel is established, the control module 11 is configured to request the calibration information template from the remote management platform; after obtaining the calibration information template, the control module 11 is configured to perform calibration control and operation according to the calibration information template and a preset calibration operation mode (e.g., a calibration method operation mode of the example when the first pressure gauge is calibrated) to obtain calibration information data; after obtaining the calibration information data, the control module 11 is configured to upload the calibration information data to the remote management platform through the NBloT communication block.
When carrying out on-the-spot check-up to the third manometer, with WIFI communication piece access pressure check-up appearance's communication interface module 14, follow-up process is similar with first manometer and second manometer basically, is different from at the calibration in-process, because mechanical pointer manometer probably can not directly output the reading of electric signal/digital signal, consequently, the value of being proofreaded can be by operator through interactive module 15 manual input.
Detailed description of the invention
The embodiment provides a transformation scheme for a temperature calibrator.
The temperature calibrator is internally provided with a temperature control cavity which is used for accommodating a measuring end of a thermometer to be calibrated and providing a target temperature environment for the measuring end, the temperature control cavity is designed to be insulated as far as possible so as to stabilize the temperature in the temperature control cavity, a temperature control module is arranged near the temperature control cavity for controlling the temperature in the temperature control cavity, for example, a heating wire, a heating rod, a Peltier refrigerating sheet and the like are provided, in the embodiment, an electric heating wire temperature control scheme is provided, namely, the temperature in the temperature control cavity can reach and be stabilized at a target temperature value (generally higher than room temperature) by controlling the power supply of the electric heating wire, in order to better control the temperature control module, the electric heating wire scheme of the embodiment is provided, a power distribution module, a control module and a temperature measuring module are arranged in the temperature calibrator, the power distribution module is respectively electrically connected with the temperature control module and an external power supply, and the control module is in signal connection with the power distribution module so as to control the on-off of the temperature control module, the temperature measuring module can be a temperature measuring thermocouple or other temperature sensors, the measuring end of the temperature measuring module is arranged at a fixed position in the temperature control cavity so as to measure the temperature in the temperature control cavity, the control module is in signal connection with the temperature measuring module, and the control module is configured to perform closed-loop control on the temperature control module according to the temperature value fed back by the temperature measuring module and the target temperature value.
Due to the initial design, the temperature calibrator does not carry wireless communication hardware, does not support the functions of communicating with a remote platform and working cooperatively, and is only provided with a wired communication interface for wired connection so as to realize the control and/or operation of the temperature calibrator.
The scheme is that the control module is configured through a wired communication interface and comprises
Configuring a control module to periodically detect the wired communication interface and determine whether to access the wireless communication device;
configuring a control module, when detecting that a wireless communication device is accessed to a wired communication interface, trying to connect with a remote management platform, and writing a communication program for the remote management platform into the control module, wherein the communication program comprises a communication protocol, registration verification information and the like; cooperatively, the information of the temperature check meter is written in the remote management platform, so that the access and data reading permission of the temperature check meter on the remote management platform is given;
the method comprises the steps that a control module is configured, and after a data channel is established between the control module and a remote management platform, a temperature calibration information template request is sent to the remote management platform;
configuring a control module, and combining with the own temperature control program of the control module, enabling the control module to extract a target temperature value in the temperature calibration information template, and calling the own temperature control program of the temperature calibrator to reach the target temperature value;
configuring a control module, so that the control module records a temperature value (a standard value, in one case, the standard value can be read from a temperature measurement module by the control module) in a temperature control cavity according to a temperature calibration information template, and a corrected temperature representation value (a corrected value, which can be manually recorded by an operator, a corresponding temperature calibrator needs to be configured with a corresponding input module, or the temperature calibrator can directly read from the corrected temperature, the corresponding temperature calibrator needs to be configured with a data interface or an electrical measurement interface corresponding to the corrected temperature, and the data interface/the electrical measurement interface is in signal connection with the control module), and the control module calculates the difference between the standard value and the corrected value to obtain a representation error;
the control module is configured to upload temperature calibration information data to the remote management platform through the wireless communication device, wherein the temperature calibration information data comprise standard values and corrected values, and can also comprise indicating value errors.
Based on the transformation scheme, the temperature check meter can be connected into the metering calibration system for unified management under the condition of basically not changing hardware, and the universality and the automation degree of equipment are improved.
Detailed description of the preferred embodiment
As shown in fig. 5, the present embodiment provides a high-precision pressure gauge with a calibration function, which includes a control module 11, a driving module 12, a pressure measuring module 13, a communication interface module 14, an interaction module 15, and a battery module 16.
The battery module 16 is electrically connected with the driving module 12 and used for supplying power to the pressure gauge, the driving module 12 is provided with a power distribution circuit and is electrically connected with the interaction module 15 and used for carrying out power distribution control on the interaction module, and the control module 11 is electrically connected with the driving module 12 so as to control the interaction module 15 to start and stop through the driving module 12.
The control module 11 is electrically connected with the pressure measuring module 13, the communication interface module 14 and the interaction module 15 respectively.
The control module 11 is configured to read the pressure measurement value from the pressure measurement module 13, and the control module 11 is in data communication with the communication interface module 14 and the interaction module 15, so as to realize data transmission and instruction reception.
In general, the high-precision pressure gauge of the present example can operate as a general pressure gauge.
In particular, when calibrating other gauges using the high accuracy gauge of the present example as a standard, a wireless communication device 2 having a connector or interface arrangement that mates with the communication interface module 14 may be selected based on the field communication environment.
The method comprises the steps that an interaction module 15 instructs a high-precision pressure gauge to enter a calibration mode, the wireless communication device 2 is connected with a communication interface module 14 in an adaptive mode, a control module 11 is configured to periodically detect the equipment access condition of the communication interface module 14, when the wireless communication device 2 is detected to be connected in the adaptive mode, the control module 11 is configured to establish data connection through the wireless communication device 2 and a remote management platform 3 (communication protocols and verification information for the remote management platform can be written in at this time and can also be preset), after the data connection is established, the control module 11 is configured to read a pressure calibration information template from the remote management platform 3, and in the calibration process, the control module 11 is configured to upload pressure calibration information data to the remote management platform 3.
The pressure calibration information data comprises a standard value and a corrected value, a standard value and corrected value acquisition example is that a manual pressure distribution device is prepared on site, the high-precision pressure gauge and the corrected pressure gauge of the example are respectively configured on the manual pressure distribution device, the control module 11 sends target pressure value information in a pressure calibration information template to the interaction module 15, a user performs pressing according to display of the interaction module 15, when the target pressure value is reached and stabilized, the control module 11 is configured to read a pressure measurement value from the pressure measurement module 13 to serve as the standard value, and an operator manually inputs a reading number from the corrected pressure gauge through the interaction module 15 to serve as the corrected value, namely, the standard value and the corrected value are acquired once.
Furthermore, the pressure calibration information template includes an allowable error of the calibrated pressure gauge, the control module 11 is configured to calculate a difference between the standard value and the calibrated value after the standard value and the calibrated value are collected, so as to obtain an indication error, compare the indication error with the allowable error, and when the indication error is greater than the allowable error, the control module 11 sends a prompt message to the interaction module 15 to further feed back the occurrence of the out-of-tolerance to the operator.
It should be noted that, in the embodiments, a specific object to be calibrated and a calibration device are illustrated, which are used for explaining the specific implementation of the embodiment of the present invention, and not for specifically limiting or restricting the concept of the present invention, and in the case of a change of the object to be calibrated and/or the calibration device, it is still within the scope of the present invention as long as the intention of the concept of the present invention is met.
Claims (10)
1. The metering calibration device is used for calibrating a field metering instrument and meter, comprises a standard measurement module, and is characterized by further comprising a control module and a communication interface module, wherein the standard measurement module and the communication interface module are respectively in signal connection with the control module, and the control module is configured to establish data connection with a remote calibration management platform through an external wireless communication device.
2. The metering verification device of claim 1, wherein: the interactive module is in signal connection with the control module and is used for instruction data input and verification information data display.
3. The metering verification device of claim 1, wherein: the external wireless communication device comprises a wired connector which is adaptively connected with the communication interface module, and the external wireless communication device is in data connection with the remote calibration management platform on the site of the calibrated instrument.
4. A metering management system based on the metering verification device of claim 1, which comprises the remote verification management platform, a managed instrument, the metering verification device and a wireless communication device, wherein a data connection is established between the remote verification management platform and the managed instrument, and the metering verification device and the wireless communication device are adaptively connected to enable the data connection to be established between the remote verification management platform and the metering verification device.
5. The metering management system of claim 4 wherein: the remote verification management platform is configured at the cloud end.
6. A pressure calibrator is used for calibrating a pressure gauge on site and comprises a pressure generation module, a pressure distribution channel, a pressure control assembly, a pressure interface assembly and a pressure measurement module, and is characterized by also comprising a control module and a communication interface module; the pressure distribution channel is communicated with the pressure interface assembly and the pressure generation module, the pressure measurement module is arranged in the pressure interface assembly and used for pressure measurement, the pressure control assembly is arranged in the pressure distribution channel and used for controlling the pressure in the pressure distribution channel and the pressure interface assembly, the control module is in signal connection with the pressure generation module, the pressure control assembly, the pressure measurement module and the communication interface module respectively, and the control module is configured to establish data connection with the remote calibration management platform through an external wireless communication device.
7. The pressure verifier of claim 6, wherein: the pressure meter calibration device further comprises a wireless communication module which is in adaptive connection with the calibrated pressure meter, and the wireless communication module is in signal connection with the control module.
8. The pressure gauge with the pressure checking function is used for checking the pressure gauge on site, and comprises a pressure measuring module, a control module and a communication interface module, wherein the control module is in signal connection with the pressure measuring module and the communication interface module respectively, and the control module is configured to establish data connection with a remote checking management platform through an external wireless communication device.
9. A temperature calibrator is used for calibrating a thermometer on site, and comprises a temperature control module, a temperature control cavity and a temperature measurement module, and is characterized by also comprising a control module and a communication interface module; the temperature control module is arranged near the temperature control cavity, the temperature in the temperature control cavity can be adjusted by the temperature control module, the temperature control cavity is used for accommodating a measuring end of a temperature meter to be calibrated and providing a target temperature environment for the measuring end, the measuring end of the temperature measuring module is arranged in the temperature control cavity and measures the temperature in the temperature control cavity, the control module is in signal connection with the temperature measuring module, the temperature control module and the communication interface module respectively, and the control module is configured to establish data connection with the remote calibration management platform through an external wireless communication device.
10. The temperature verifier of claim 9, wherein: the communication interface module also comprises a checking reading interface which is used for being in adaptive connection with the signal output end of the thermometer to be checked, and the checking reading interface is in signal connection with the control module.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776571A (en) * | 2021-07-30 | 2021-12-10 | 华电电力科学研究院有限公司 | Online calibration method for thermal monitoring instrument of power plant |
| CN113970402A (en) * | 2020-12-14 | 2022-01-25 | 北京康斯特仪表科技股份有限公司 | Measurement calibration device and management system thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970402A (en) * | 2020-12-14 | 2022-01-25 | 北京康斯特仪表科技股份有限公司 | Measurement calibration device and management system thereof |
| CN113776571A (en) * | 2021-07-30 | 2021-12-10 | 华电电力科学研究院有限公司 | Online calibration method for thermal monitoring instrument of power plant |
| CN113776571B (en) * | 2021-07-30 | 2023-06-27 | 华电电力科学研究院有限公司 | Online calibration method for thermal monitoring instrument of power plant |
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