CN112946188A - Downhole sensor calibration method, device, equipment and medium - Google Patents
Downhole sensor calibration method, device, equipment and medium Download PDFInfo
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- CN112946188A CN112946188A CN202110101554.0A CN202110101554A CN112946188A CN 112946188 A CN112946188 A CN 112946188A CN 202110101554 A CN202110101554 A CN 202110101554A CN 112946188 A CN112946188 A CN 112946188A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital using a threshold to release an alarm or displaying means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0073—Control unit therefor
Abstract
The invention discloses a calibration method of an underground sensor, which comprises the steps of firstly establishing wireless communication connection between a portable multi-parameter gas monitoring device and a certain underground gas sensor, acquiring gas concentration at the position of the gas sensor by the portable multi-parameter gas monitoring device to serve as first monitoring data, sending an instruction for reading real-time monitoring data of the gas sensor to the gas sensor by the portable multi-parameter gas monitoring device, and receiving second monitoring data transmitted by the gas sensor by the portable multi-parameter gas monitoring device; and comparing the first monitoring data and the second monitoring data acquired at the same moment one by one, respectively recording error values between the first monitoring data and the second monitoring data, calculating an error average value of all the error values, and taking the opposite number of the average value as a zero correction value of the gas sensor. By utilizing the method and the device, automatic calibration and correction of the underground gas sensor can be realized, so that the accuracy of data acquisition of the underground gas sensor can be rapidly verified.
Description
Technical Field
The invention relates to the field of sensor calibration, in particular to a calibration method of a gas sensor under a mine.
Background
In order to monitor the environmental changes of the underground coal mine in real time, a plurality of gas sensors such as gas, carbon monoxide, oxygen, hydrogen sulfide and the like can be installed under the coal mine, the accuracy and the effectiveness of monitoring data of the gas sensors can be continuously weakened along with the lapse of the using time and the influence of the underground working environment, and serious hidden troubles are brought to the underground production safety of the coal mine. According to relevant regulation requirements, workers need to adjust the underground gas sensor regularly, and the daily monitoring error of the gas sensor is reduced. The existing debugging method of the underground gas sensor is to utilize a standard gas sample and an air gas sample to calibrate the underground sensor, a worker needs to carry a gas cylinder to go into the well, and found unqualified sensors need to be maintained or replaced, so that the method is very inconvenient. Because the number of the gas sensors installed under the coal mine is large, and the calibration process needs to be operated by using a standard gas sample, the cost for purchasing the standard gas sample and a large amount of manpower consumed by manual calibration under the coal mine generate a small daily maintenance burden for the coal mine.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a method for calibrating a downhole sensor, which is convenient to operate and can be automatically calibrated.
In a first aspect, the present invention provides a method of downhole sensor calibration comprising the steps of:
s101: establishing wireless communication connection between the portable multi-parameter gas monitoring device and a certain gas sensor in the underground;
s102: taking the gas concentration acquired by the portable multi-parameter gas monitoring device at the position of the gas sensor as first monitoring data; the portable multi-parameter gas monitoring device sends an instruction for reading real-time monitoring data of the gas sensor to the gas sensor, and receives second monitoring data transmitted by the gas sensor;
s103: setting acquisition time, wherein the first monitoring data and the second monitoring data acquired within the acquisition time are a plurality of groups, comparing the first monitoring data and the second monitoring data acquired at the same moment one by one, respectively recording error values between the first monitoring data and the second monitoring data, and calculating an error average value of all the error values;
s104: and taking the opposite number of the error average value as a zero point correction value of the gas sensor, sending a zero point correction instruction to the gas sensor by the portable multi-parameter gas monitoring device, and correcting and calibrating output monitoring data after receiving the instruction by the gas sensor.
By adopting the method, automatic calibration and correction of the underground gas sensor can be realized, so that the accuracy of data acquisition of the underground gas sensor can be quickly verified, the process of manually participating in calibration is reduced, and the cost of manpower and material resources is reduced.
In an embodiment of the present invention, in step S101, the portable multi-parameter gas monitoring device can establish a wireless communication connection with only one downhole gas sensor at the same time, and the distance between the two sensors is within 1 meter.
By adopting the method, the portable multi-parameter gas monitoring device can be the same as the underground gas sensor in the measurement environment, and the accuracy of sensor calibration is improved.
In an embodiment of the present invention, in step S103, the acquisition time is set to be in a range of 1 to 10 minutes.
By adopting the method, the acquisition time is set to be at least 1 minute so as to enable the data acquisition process to be more stable and reliable, if the time is too short, the acquired data samples are too few, the actual working state of the sensor cannot be comprehensively reflected, meanwhile, the time cost of underground workers is considered, the default maximum acquisition time is 10 minutes, and the specific acquisition time can be freely set.
In an embodiment of the invention, in the step S103, an error value of the first monitor data and the second monitor data is Δ Vn, and the average value of the errors is Δ V ═ Δ V1+ Δ V2+ Δ V3+ Δ V4+ Δ V5+. + Δ Vn ÷ n.
By adopting the technical method, the first monitoring data and the second monitoring data can be ensured to be carried out in the same time dimension and the same space dimension, the calculated error value is more in line with the actual requirement, and the calibration can be more accurate.
In an embodiment provided by the present invention, the calibration method further includes:
s105: and the gas sensor sends the calibrated zero value and the corresponding calibration time to an upper computer for display and storage.
In an embodiment provided by the present invention, the calibration method further includes:
s106: establishing wireless communication connection between the portable multi-parameter gas monitoring device and a certain underground gas sensor, and selecting an alarm test function or a power-off test function on a display interface of the portable multi-parameter gas monitoring device;
s107: reading alarm configuration information or power failure configuration information of the gas sensor through the portable multi-parameter gas monitoring device, and sending alarm simulation data or power failure simulation data to the gas sensor according to the configuration information;
s108: and after receiving the analog data, the gas sensor triggers an alarm mechanism or a motor breaking mechanism of the gas sensor to verify.
In a second aspect, the present invention provides a downhole sensor calibration device comprising:
the communication module is used for establishing wireless communication connection between the portable multi-parameter gas monitoring device and a certain gas sensor in the underground;
the acquisition module is connected with the communication module and is used for taking the gas concentration acquired by the portable multi-parameter gas monitoring device at the position of the gas sensor as first monitoring data; the portable multi-parameter gas monitoring device sends an instruction for reading real-time monitoring data of the gas sensor to the gas sensor, and receives second monitoring data transmitted by the gas sensor;
the comparison module is connected with the acquisition module and used for setting acquisition time, comparing the first monitoring data and the second monitoring data acquired at the same moment one by one, respectively recording error values between the first monitoring data and the second monitoring data, and calculating an error average value of all the error values, wherein the first monitoring data and the second monitoring data acquired within the acquisition time are a plurality of groups;
and the correction module is connected with the comparison module and is used for taking the opposite number of the error average value as the zero point correction value of the gas sensor, the portable multi-parameter gas monitoring device sends a command for correcting the zero point value to the gas sensor, and the gas sensor corrects and calibrates the output monitoring data after receiving the command.
In a third aspect, the present invention provides a computer device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, when executing the computer program, implementing a downhole sensor calibration method as described above.
In a fourth aspect, the invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements a downhole sensor calibration method as described above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a downhole sensor calibration method provided by an embodiment of the invention;
table 1 is a list of data collected within 1 minute provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a downhole sensor calibration apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a portable multi-parameter gas monitoring device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Reference numerals:
a communication module 41, an acquisition module 42, a comparison module 43 and a correction module 44;
a display module 51, a circuit module 52, a multi-probe module 53;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to FIG. 1, a method for downhole sensor calibration is provided. The method comprises the following steps:
s101: and establishing wireless communication connection between the portable multi-parameter gas monitoring device and a certain gas sensor in the underground.
It should be noted that the portable multi-parameter gas monitoring device is used for being carried by a worker to go into the well when going into the well, and the worker uses a standard gas sample to calibrate the portable multi-parameter gas monitoring device before the worker carries the portable multi-parameter gas monitoring device to go into the well. When the staff reachs a certain gas sensor's position in the pit, portable multi-parameter gas monitoring devices and this gas sensor establish wireless communication and connect, for example can be bluetooth connection, establish wireless communication and connect the back, portable multi-parameter gas monitoring devices can save the connection that corresponds, can establish the connection automatically when being convenient for next calibration. Specifically, when the portable multi-parameter gas monitoring device opens the bluetooth mode, it can be shown that a plurality of bluetooth equipment can connect, and the staff selects the gas sensor that needs the calibration to establish wireless communication after carrying out bluetooth pairing. The portable multi-parameter gas monitoring device can only establish wireless communication connection with one underground gas sensor at the same time, and the distance between the portable multi-parameter gas monitoring device and the underground gas sensor is preferably within 1 meter, so that the gas environments of the underground gas sensor and the underground gas sensor are the same, and the accuracy of sensor calibration is improved.
S102: taking the gas concentration acquired by the portable multi-parameter gas monitoring device at the position of the gas sensor as first monitoring data; the portable multi-parameter gas monitoring device sends an instruction for reading real-time monitoring data of the gas sensor to the gas sensor, and receives second monitoring data transmitted by the gas sensor.
It should be noted that the first monitoring data V1As the standard value, the second monitoring data V2As the value to be calibrated, the portable multi-parameter gas monitoring device sends a reading instruction to the gas sensor through wireless communication and receives real-time monitoring data transmitted by the gas sensor.
S103: setting acquisition time, enabling the first monitoring data and the second monitoring data acquired in the acquisition time to be a plurality of groups, comparing the first monitoring data and the second monitoring data acquired at the same time one by one, respectively recording error values between the first monitoring data and the second monitoring data, and calculating an error average value of all the error values.
It should be noted that the acquisition time is at least 1 minute and at most 10 minutes, the first monitoring data and the second monitoring data acquired within the acquisition time are a plurality of groups, and the first monitoring data V acquired at the same time is acquired1And the second monitoring data V2Performing a one-to-one comparison of the first monitoring data V1And the second monitoring data V2Is recorded as Δ Vn＝V1-V2Wherein Δ Vn is the first monitoring number acquired at the nth timeBased on the error between the first monitoring data and the second monitoring data, the average value of the errors is delta V (delta V)1+ΔV2+ΔV3+ΔV4+ΔV5+...+ΔVn) N. In this embodiment, the setting of the collection time to be at least 1 minute is to make the data collection process more stable and reliable, if the time is too short, the collected data samples are too few, the actual working state of the sensor cannot be fully reflected, and meanwhile, considering the time cost of the downhole worker, the default maximum collection time is 10 minutes, and the specific collection time can be freely set. In this embodiment, the acquisition of the second monitoring data monitored by the gas sensor by the portable multi-parameter gas monitoring device lasts for a period of time, and after the portable multi-parameter gas monitoring device receives the second monitoring data each time, the portable multi-parameter gas monitoring device can automatically compare with the first monitoring data monitored at the same moment, and calculate an error value between the first monitoring data and the first monitoring data. The method for calculating the error average value can enable the data calibration to be more accurate, the first monitoring data and the second monitoring data are ensured to be carried out in the same time dimension and the same space dimension, the calculated error value is more in line with the actual requirement, and the calibration can be more accurate. If the monitoring values of the underground gas sensor are only collected within the duration, the average value of the underground gas sensor is calculated after the collection is finished, and the average value is compared with the real-time value monitored by the portable multi-parameter gas monitoring device to calculate the measurement error, the underground gas sensor and the portable multi-parameter gas monitoring device are compared under different time dimensions, and the comparison result is different from the actual situation.
S104: and taking the opposite number of the error average value as a zero correction value of the gas sensor, sending a command for correcting the zero value to the gas sensor by the portable multi-parameter gas monitoring device, and correcting and calibrating the output monitoring data after the gas sensor receives the command.
The negative number of the error average value obtained in step S103 is used as the zero point correction value of the gas sensor, and the zero point value of the sensor is set to 0 by default. If the error averages 0, it indicates that the gas sensor measurement is substantially accurate and no calibration is required. If the error average value is a positive number, the measured value of the gas sensor is smaller than the actual value, and the zero point needs to be reduced during calibration. If the average error value is negative, the measured value of the gas sensor is larger than the actual value, and the zero point needs to be increased during calibration. And finally outputting the data on the display interface of the gas sensor as calibrated data.
Referring to table 1, taking the downhole carbon monoxide sensor as an example, the acquisition time is set to 1 minute, and the portable multi-parameter monitoring device and the carbon monoxide sensor respectively acquire 13 groups of data, namely, the first monitoring data V acquired at the same time1And the second monitoring data V2Respectively is DeltaV1＝1ppm，ΔV2＝0ppm，ΔV3＝-2ppm，ΔV4＝-3pp m，ΔV5＝-2ppm，ΔV6＝0ppm，ΔV7＝-2ppm，ΔV8＝-1ppm，ΔV9＝-1ppm，ΔV10＝0ppm，ΔV11＝-2ppm，ΔV12＝-2ppm，ΔV132ppm, from which the average value of the errors Δ V ═ Δ V (Δ V) can be calculated1+ΔV2+ΔV3+ΔV4+ΔV5+ΔV6+ΔV7+ΔV8+ΔV9+ΔV10+ΔV11+ΔV12+ΔV13) 13-1.23 ppm, the zero point correction value is the opposite of-1.23, and the zero point value after correction is 0+ 1.23-1.23 ppm. According to the method, the portable multi-parameter gas monitoring device is in wireless communication connection with the underground gas sensor, reads the real-time monitoring value of the gas sensor, automatically compares the real-time monitoring value with the real-time monitoring value of the portable multi-parameter gas monitoring device, automatically corrects the zero value of the sensor according to the comparison result, and achieves the purpose of automatically and quickly calibrating the monitoring accuracy of the underground gas sensor. The method reduces a large amount of manpower and material resource investment consumed by the traditional adjusting method, and improves the efficiency of calibration.
With continued reference to fig. 1, the method for calibrating a downhole sensor according to the present invention may further include:
s105: and the gas sensor sends the calibrated zero value and the corresponding calibration time to an upper computer for display and storage.
It can be understood that the gas sensor can upload the received correction information of the zero value and the corresponding correction calibration time to the upper computer through a network channel for uploading data, the corresponding calibration information can be automatically popped up on a display interface of the upper computer to prompt the sensor data calibration information generated underground by a ground user, and meanwhile, the upper computer can automatically store the relevant correction calibration information to facilitate future inquiry.
With continued reference to fig. 1, the method for calibrating a downhole sensor according to the present invention may further include:
s106: establishing wireless communication connection between the portable multi-parameter gas monitoring device and a certain gas sensor in the underground, and selecting an alarm test function or a power-off test function on a display interface of the portable multi-parameter gas monitoring device;
s107: reading alarm configuration information or power failure configuration information of the gas sensor through a portable multi-parameter gas monitoring device, and sending alarm simulation data or power failure simulation data to the gas sensor according to the configuration information;
s108: and after the gas sensor receives the analog data, triggering an alarm mechanism or a motor breaking mechanism of the gas sensor for verification.
It should be noted that the alarm mechanism of the sensor may be an audible and visual alarm, and the worker may judge whether the alarm function of the sensor is normal by observing whether the sensor emits an audible and visual alarm. The power-off function of the sensor is that when the sensor monitors that the gas concentration reaches a power-off value, a power-off instruction is automatically sent to power supply equipment associated with the sensor, a related power supply is cut off, and explosion accidents are avoided.
Referring to fig. 2, the present invention further provides a calibration apparatus for a downhole sensor, which includes a communication module 41, an acquisition module 42, a comparison module 43 and a correction module 44, wherein the communication module 41 is connected to the acquisition module 42, the acquisition module 42 is connected to the comparison module 43, and the comparison module 43 is connected to the correction module 44. The communication module 41 is used to establish a wireless communication connection, such as a bluetooth connection, between the portable multi-parameter gas monitoring device and a gas sensor in the downhole. The acquisition module 42 is configured to use the gas concentration acquired by the portable multi-parameter gas monitoring device at the position of the gas sensor as first monitoring data; the portable multi-parameter gas monitoring device sends an instruction for reading real-time monitoring data of the gas sensor to the gas sensor, and receives second monitoring data transmitted by the gas sensor. The comparison module 43 is configured to set an acquisition time, the first monitoring data and the second monitoring data acquired within the acquisition time are grouped into a plurality of groups, the first monitoring data and the second monitoring data acquired at the same time are compared one by one, error values between the first monitoring data and the second monitoring data are respectively recorded, and an error average value of all the error values is calculated. The correction module 44 is configured to use the opposite number of the error average value as a zero correction value of the gas sensor, send a zero correction instruction to the gas sensor by the portable multi-parameter gas monitoring device, and correct and calibrate the output monitoring data after the gas sensor receives the zero correction instruction.
In one embodiment, the comparison module 43 collects the first monitoring data V for at least 1 minute and no more than 10 minutes1And the second monitoring data V2Has an error value of Δ Vn＝V1-V2Wherein, Δ VnFor the error between the first monitoring data and the second monitoring data acquired at the nth time, the average value of the errors is Δ V ═ Δ V1+ΔV2+ΔV3+ΔV4+ΔV5+...+ΔVn) N. In this embodiment, the setting of the collection time to be at least 1 minute is to make the data collection process more stable and reliable, if the time is too short, the collected data samples are too few, the actual working state of the sensor cannot be fully reflected, and meanwhile, considering the time cost of the downhole worker, the default maximum collection time is 10 minutes, and the specific collection time can be freely set. In this embodiment, the acquisition of the second monitoring data monitored by the gas sensor by the portable multi-parameter gas monitoring device lasts for a period of time, and after the portable multi-parameter gas monitoring device receives the second monitoring data each time, the portable multi-parameter gas monitoring device can automatically compare the second monitoring data with the first monitoring data monitored at the same time, and calculate an error value between the first monitoring data and the first monitoring data. The method calculating the mean value of the errorThe mode can make the data calibration more accurate, guarantees that first monitoring data and second monitoring data are gone on in same time dimension, same space dimension, and the error value that calculates accords with actual demand more, and the calibration can be more accurate. If the monitoring values of the underground gas sensor are only collected within the duration, the average value of the underground gas sensor is calculated after the collection is finished, and the average value is compared with the real-time value monitored by the portable multi-parameter gas monitoring device to calculate the measurement error, the underground gas sensor and the portable multi-parameter gas monitoring device are compared under different time dimensions, and the comparison result is different from the actual situation. The zero value of the sensor in the correction module 44 is set to 0 by default, and if the average value of the errors is 0, the measurement result of the gas sensor is basically accurate and does not need to be calibrated; if the error average value is a positive number, the measured value of the gas sensor is smaller than the actual value, and the zero point needs to be reduced during calibration; if the average error value is negative, the measured value of the gas sensor is larger than the actual value, and the zero point needs to be increased during calibration. And finally outputting the data on the display interface of the gas sensor as calibrated data. The portable multi-parameter gas monitoring device is in wireless communication connection with the underground gas sensor, reads the real-time monitoring value of the gas sensor, automatically compares the real-time monitoring value with the real-time monitoring value of the portable multi-parameter gas monitoring device, automatically corrects the zero value of the sensor according to the comparison result, realizes automatic and rapid calibration of the monitoring accuracy of the underground gas sensor, reduces a large amount of manpower and material resource investment required to be consumed by the traditional calibration method, and improves the calibration efficiency.
Referring to fig. 3, in an embodiment, the portable multi-parameter gas monitoring apparatus may include a display module 51, a circuit module 52 and a multi-probe module 53, wherein the display module 51 is connected to the circuit module 52, and the circuit module 52 is connected to the multi-probe module 53. The display module 51 may be used for data information display and user interaction, the circuit module 52 for control calculations, and the multi-probe module 53 for collecting relevant parameters in the downhole gas environment. The portable multi-parameter gas monitoring device can collect, measure and display the concentration of gas such as gas and carbon monoxide gas in underground environment gas in real time, after the portable multi-parameter gas monitoring device is wirelessly connected with an underground gas sensor, the type of the connected gas sensor can be automatically obtained, and a data comparison process is automatically started according to the type of the wirelessly connected gas sensor, for example, the wirelessly connected underground carbon monoxide sensor automatically compares and calibrates the concentration of the carbon monoxide gas collected by the portable multi-parameter gas monitoring device and the real-time monitoring value of the carbon monoxide sensor. The portable multi-parameter gas monitoring device adopted by the embodiment is developed and designed aiming at monitoring requirements of gas such as methane, carbon monoxide and the like under a coal mine, can simultaneously acquire the concentration of the gas such as methane, carbon monoxide and the like in the environmental gas under the coal mine, and can also automatically calibrate the accuracy of data acquisition of sensors such as the underground methane, the carbon monoxide and the like.
Referring to fig. 4, the present invention further provides a computer device, which includes a memory 61 and a processor 62, wherein the memory 61 and the processor 62 are connected by a bus or other means, and the processor 62 is used for controlling the overall operation of the computer to complete all or part of the steps of the downhole sensor calibration method. The Memory 61 is used for storing various types of data to support the operation of the computer device, and the Memory 61 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), an EPROM, a Programmable Read-Only Memory (PROM), a Read-Only Memory (ROM), a magnetic Memory, a flash Memory, a magnetic disk or an optical disk. The computer Device 60 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components, and is used to perform the above-mentioned method for rapid identification of data tampering.
For example, the present invention also provides a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the downhole sensor calibration method described above. For example, the computer readable storage medium may be the memory 61 described above comprising program instructions executable by the processor 62 of the computer device to perform the data tampering rapid identification method described above.
For a description of relevant parts in the downhole sensor calibration device, the computer device, and the computer-readable storage medium provided in the embodiments of the present invention, reference is made to detailed descriptions of corresponding parts in the downhole sensor calibration method provided in the embodiments of the present invention, and details are not repeated here.
In summary, in the invention, when the worker works, the portable multi-parameter gas monitoring device is carried to go down the well and establishes wireless communication connection with the downhole gas sensor, the portable multi-parameter gas monitoring device reads the second monitoring data of the related gas sensor, and automatically compares the second monitoring data with the first monitoring data acquired by the portable multi-parameter gas monitoring device at the same moment, and calculates the average error value. And automatically correcting the zero value of the sensor according to the error average value, and realizing the measurement accuracy of automatically and quickly calibrating the underground gas sensor. The invention adopts an automatic calibration mode to reduce errors caused by manual participation, reduces a large amount of manpower and material resource investment consumed by the traditional calibration method, only needs a portable multi-parameter gas monitoring device to perform calibration operation, simplifies the complicated operation of underground calibration and improves the calibration efficiency.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A method of downhole sensor calibration, comprising the steps of:
s101: establishing wireless communication connection between the portable multi-parameter gas monitoring device and a certain gas sensor in the underground;
s102: taking the gas concentration acquired by the portable multi-parameter gas monitoring device at the position of the gas sensor as first monitoring data; the portable multi-parameter gas monitoring device sends an instruction for reading real-time monitoring data of the gas sensor to the gas sensor, and receives second monitoring data transmitted by the gas sensor;
s103: setting acquisition time, wherein the first monitoring data and the second monitoring data acquired within the acquisition time are a plurality of groups, comparing the first monitoring data and the second monitoring data acquired at the same moment one by one, respectively recording error values between the first monitoring data and the second monitoring data, and calculating an error average value of all the error values;
s104: and taking the opposite number of the error average value as a zero point correction value of the gas sensor, sending a zero point correction instruction to the gas sensor by the portable multi-parameter gas monitoring device, and correcting and calibrating output monitoring data after receiving the instruction by the gas sensor.
2. The method according to claim 1, wherein in step S101, the portable multi-parameter gas monitoring device can establish a wireless communication connection with only one downhole gas sensor at the same time, and the distance between the portable multi-parameter gas monitoring device and the downhole gas sensor is within 1 meter.
3. The method of calibrating a downhole sensor of claim 1, wherein in step S103 the acquisition time is set in the range of 1-10 minutes.
4. The method of claim 3, wherein in step S103, the first monitored data and the second monitored data have an error value Δ VnThe average error value is Δ V ═ Δ V1+ΔV2+ΔV3+ΔV4+ΔV5+...+ΔVn)÷n。
5. The downhole sensor calibration method of claim 1, further comprising:
s105: and the gas sensor sends the calibrated zero value and the corresponding calibration time to an upper computer for display and storage.
6. The downhole sensor calibration method of claim 1, further comprising:
s106: establishing wireless communication connection between the portable multi-parameter gas monitoring device and a certain underground gas sensor, and selecting an alarm test function or a power-off test function on a display interface of the portable multi-parameter gas monitoring device;
s107: reading alarm configuration information or power failure configuration information of the gas sensor through the portable multi-parameter gas monitoring device, and sending alarm simulation data or power failure simulation data to the gas sensor according to the configuration information;
s108: and after receiving the analog data, the gas sensor triggers an alarm mechanism or a motor breaking mechanism of the gas sensor to verify.
7. A downhole sensor calibration device for use in a downhole sensor calibration method according to any of claims 1-6, comprising:
the communication module (41) is used for establishing wireless communication connection between the portable multi-parameter gas monitoring device and a certain gas sensor in the underground;
an acquisition module (42) connected to the communication module (41), the acquisition module (42) being configured to use a gas concentration acquired by the portable multi-parameter gas monitoring device at a location of the gas sensor as first monitoring data; the portable multi-parameter gas monitoring device sends an instruction for reading real-time monitoring data of the gas sensor to the gas sensor, and receives second monitoring data transmitted by the gas sensor;
the comparison module (43) is connected with the acquisition module (42), the comparison module (43) is used for setting acquisition time, the first monitoring data and the second monitoring data acquired in the acquisition time are a plurality of groups, the first monitoring data and the second monitoring data acquired at the same time are compared one by one, error values between the first monitoring data and the second monitoring data are respectively recorded, and an error average value of all the error values is calculated;
and the correction module (44) is connected with the comparison module (43), the correction module (44) is used for taking the opposite number of the error average value as the zero point correction value of the gas sensor, the portable multi-parameter gas monitoring device sends a command for correcting the zero point value to the gas sensor, and the gas sensor corrects and calibrates the output monitoring data after receiving the command.
8. Computer apparatus, comprising: a memory (61), a processor (62) and a computer program stored on the memory (61) and executable on the processor (62), when executing the computer program, implementing the downhole sensor calibration method according to any of claims 1-6.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the downhole sensor calibration method according to any one of claims 1 to 6.
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