CN112050912B - Method, device and system for water meter online calibration based on ultrasonic flowmeter - Google Patents
Method, device and system for water meter online calibration based on ultrasonic flowmeter Download PDFInfo
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- CN112050912B CN112050912B CN202011033579.3A CN202011033579A CN112050912B CN 112050912 B CN112050912 B CN 112050912B CN 202011033579 A CN202011033579 A CN 202011033579A CN 112050912 B CN112050912 B CN 112050912B
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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Abstract
The utility model relates to a technical field of water gauge calibration, especially relate to a carry out online calibration method of water gauge based on ultrasonic flowmeter, device and system, based on ultrasonic flowmeter flow calibration method includes receiving the skew information in real time, when detecting that ultrasonic sensor position does not have the skew, confirm to carry out the flow measurement of ultrasonic flowmeter, accuracy when improving follow-up ultrasonic flowmeter measurement, then receive the flow value that ultrasonic flowmeter measured in real time, utilize flow value and preset threshold value scope to compare and generate the comparison result, and judge whether flow value is unusual according to the comparison result, when flow value is not located preset threshold value scope, confirm to send flow anomaly notice information to the terminal, thereby can realize flow remote monitoring, be convenient for carry out remote management to ultrasonic flowmeter, can in time inform staff's flow anomaly when flow is unusual, thereby can in time overhaul the reason of flow anomaly.
Description
Technical Field
The application relates to the technical field of water meter calibration, in particular to a method, a device and a system for performing water meter online calibration based on an ultrasonic flowmeter.
Background
The flow measurement is an important parameter in industrial process measurement, and bears two important tasks in industrial production, one is to calculate the total amount measurement of storage and transportation management and sewage and waste gas emission control for flow material trade, and the other is to perform necessary flow detection and control for improving product quality and production efficiency, reducing cost, and protecting water conservancy project and environment for process industry.
In order to measure the water flow in the pipeline on line, an ultrasonic flowmeter is adopted as the water meter to calibrate the water meter on line so as to ensure that the water meter can measure the data of the pipeline flow accurately, wherein the ultrasonic flowmeter generally comprises a first ultrasonic transducer, a second ultrasonic transducer and a flow measurement host, the first ultrasonic transducer is arranged at the upstream in the pipeline, the second ultrasonic transducer is arranged at the downstream in the pipeline, the first ultrasonic transducer, the second ultrasonic transducer and the flow measurement host are connected through signal lines, the first ultrasonic transducer and the second ultrasonic transducer transmit ultrasonic waves to the water in the pipeline and transmit the data to the flow measurement host for display, after the measured data are finished, the measured data are copied, and then the water meter is compared with the flow value measured by the ultrasonic flowmeter so as to calibrate.
The above prior art solutions have the following drawbacks: before calibrating the water meter each time, the staff is required to arrive at the site in person to carry out daily maintenance on the ultrasonic flowmeter, so as to ensure that the ultrasonic flowmeter can carry out accurate calibration on the water meter, but every time, the staff is required to arrive at the site in person to overhaul to know whether the ultrasonic flowmeter is abnormal or not, if not in the maintenance time, the ultrasonic flowmeter is abnormal, an operator cannot check the abnormal reason of the ultrasonic flowmeter in time, the maintenance time is delayed, when the measured water meter needs to be calibrated, a large amount of time is required to be spent to overhaul the ultrasonic flowmeter, and the calibration of the measured water meter is not convenient.
Disclosure of Invention
In order to timely inform maintenance personnel of abnormal flow and facilitate the calibration operation of a measured water meter, the application provides a method, a device and a system for performing online calibration of the water meter based on an ultrasonic flowmeter.
In a first aspect, the present application provides a method for performing online calibration of a water meter based on an ultrasonic flow meter, which adopts the following technical scheme:
a method for performing online calibration on a water meter based on an ultrasonic flowmeter comprises the following steps:
receiving offset information sent by the ultrasonic sensor in real time to determine whether the position of the ultrasonic sensor is offset;
when the position of the ultrasonic sensor is not deviated, determining to carry out flow measurement of the ultrasonic flowmeter;
receiving a flow value measured by an ultrasonic flowmeter in real time;
comparing the flow value with a preset threshold range to obtain a comparison result;
determining whether to carry out calibration operation of the water meter to be detected or not according to the comparison result;
when the flow value measured by the ultrasonic flowmeter is within the preset flow threshold range, the calibration operation of the measured water meter is carried out;
and when the flow value measured by the ultrasonic flowmeter is not within the preset flow threshold range, the calibration operation of the measured water meter is not carried out, and the abnormal flow notification information is determined to be sent to the terminal.
By adopting the technical scheme, the offset information is received in real time, whether the position of the ultrasonic sensor is offset or not is determined according to the offset information, when no offset of the position of the ultrasonic sensor is detected, the flow measurement of the ultrasonic flowmeter is determined, so that the accuracy of the subsequent ultrasonic flowmeter in measurement is improved, then the flow value measured by the ultrasonic flowmeter is received in real time, the flow value is compared with a preset threshold range to generate a comparison result, whether the measured water meter calibration operation is performed or not is determined according to the comparison result, when the ultrasonic flowmeter is located in the preset flow threshold range, the ultrasonic flowmeter is indicated to be accurate in measurement, the measured water meter calibration operation is performed, when the flow value measured by the ultrasonic flowmeter is not located in the preset flow threshold range, the ultrasonic flowmeter is indicated to be abnormal, the flow abnormal notification information is determined to be sent to a terminal, and therefore an operator performs remote detection and management on the ultrasonic flowmeter, and the measured water meter calibration operation measurement is also facilitated.
Further, the step of performing a calibration operation of the measured water meter includes:
acquiring a flow value measured by a measured water meter;
comparing the flow value measured by the measured water meter with a preset flow threshold range to obtain a comparison result;
and determining whether to send the abnormal calibration information of the water meter to be detected to the terminal or not based on the comparison result.
By adopting the technical scheme, the flow value measured by the measured water meter is obtained, the flow value measured by the measured water meter is compared with the preset flow threshold range, and a comparison result is obtained.
Further, the step of receiving offset information sent from the ultrasonic sensor in real time includes:
generating offset information according to the signal state of the infrared signal on the ultrasonic sensor:
the signal states comprise a normal state and an abnormal state;
when the signal state is a normal state and does not change within a preset time, the position of the ultrasonic sensor does not deviate, and deviation information of the position of the ultrasonic sensor without deviation is generated;
when the signal state is an abnormal state and does not change within a preset time, the position of the ultrasonic sensor deviates, and deviation information of the position deviation of the ultrasonic sensor is generated;
determining whether the position of the ultrasonic sensor is shifted based on the shift information.
By adopting the technical scheme, whether the position of the ultrasonic sensor deviates or not is judged according to the state of the infrared signal, when the infrared signal is in a normal state and does not change within the preset time, deviation information of the ultrasonic position without deviation is generated, so that the flow measurement of a subsequent ultrasonic flowmeter can be carried out, when the infrared signal is in an abnormal state and does not change within the preset time, the deviation information of the ultrasonic sensor position deviation is generated at the moment, so that the deviation notification information can be confirmed to be sent to a terminal, and a worker can timely know the position deviation of the ultrasonic sensor.
Further, the method also comprises the following steps:
receiving a flow velocity value measured by an ultrasonic flowmeter in real time;
comparing the flow velocity value with a preset condition to obtain a comparison result;
determining whether to send notification information of abnormal check flow to the terminal according to the comparison result;
and when the check flow value does not meet the preset condition, determining to send check flow abnormal notification information to the terminal.
By adopting the technical scheme, firstly, the flow velocity value measured by the ultrasonic flowmeter is received, the flow velocity value is compared with the preset condition to obtain the comparison result, whether the notification information of the abnormal check flow is sent to the terminal is determined according to the comparison result, when the flow velocity value does not meet the preset condition, the notification information of the abnormal flow velocity is determined to be sent to the terminal, the measured flow velocity value is checked, and therefore the staff can be informed of the abnormal flow velocity measurement in time.
Further, the step of comparing the flow rate value with a preset condition to obtain a comparison result includes:
multiplying the flow velocity value by a preset pipeline section area to obtain a check flow value;
subtracting the flow value measured by the ultrasonic flowmeter from the check flow value to obtain the absolute value of the difference between the check flow value and the flow value;
and comparing the absolute value of the difference between the verified flow value and the flow value measured by the ultrasonic flowmeter with an allowable error range to obtain a comparison result.
By adopting the technical scheme, the flow value is multiplied by the preset pipeline section area to obtain the check flow value, the check flow value is subtracted from the flow value measured by the ultrasonic flowmeter to obtain the absolute value of the difference, so as to obtain the error between the check flow value and the flow value, then the absolute value of the difference is compared with the allowable error range to obtain the comparison result, and the accuracy of the flow value measured by the ultrasonic flowmeter can be checked by comparing the check flow value with the measured value, so as to improve the accuracy of the data measured by the ultrasonic flowmeter.
In a second aspect, the present application provides an online calibration device for a water meter based on an ultrasonic flowmeter, which adopts the following technical scheme:
an online water meter calibration device based on an ultrasonic flowmeter comprises,
the offset detection module is used for receiving offset information sent by the ultrasonic sensor in real time so as to determine whether the position of the ultrasonic sensor is offset or not;
the flow receiving module is used for receiving a flow value measured by the ultrasonic flowmeter in real time;
the flow comparison module is used for comparing the flow value with a preset flow threshold range and obtaining a comparison result;
and the first execution module is used for determining whether to perform the calibration operation of the water meter to be tested based on the comparison result.
By adopting the technical scheme, the offset detection module receives offset information sent by the ultrasonic sensor in real time to determine whether the position of the ultrasonic sensor is offset or not, when the position of the ultrasonic sensor is determined to be not offset, the flow receiving module receives a flow value measured by the ultrasonic flowmeter in real time, the flow comparison module compares the flow value with a preset threshold range to generate a comparison result, and the first execution module determines whether to send abnormal flow notification information to the terminal or not based on the comparison result.
Further, the method also comprises the following steps:
the flow rate acquisition module is used for acquiring a flow rate value measured by the ultrasonic flowmeter in real time;
the calculation module is used for multiplying the flow velocity value by the preset pipeline section area to obtain a check flow value, and subtracting the measured flow value from the check flow value to obtain an absolute value of the difference between the check flow value and the measured flow value;
the checking module is used for comparing the measurement error with a preset allowable error range to obtain a checking result;
and the second execution module is used for determining whether to send the notification information of the abnormal check flow to the terminal according to the check result.
By adopting the technical scheme, when the flow measurement is finished and within the range of the preset flow threshold value, in order to improve the accuracy of the flow value, the flow rate module acquires the flow rate value, then the calculation module is used for multiplying the flow rate value by the preset pipeline section area to obtain the check flow value, the check flow value and the measured flow value are subjected to subtraction calculation to obtain the absolute value of the difference, the check module compares the absolute value of the difference between the check flow value and the measured flow value with the preset allowable error range to obtain the comparison result, and the second execution module determines whether the check of the measured flow value and the check flow value is abnormal or not according to the check result.
In a third aspect, the present application provides a computer device, which adopts the following technical solution:
a computer device comprises a memory and a processor, wherein the memory is stored with a computer program which can be loaded by the processor and executes the flow monitoring method of the water meter on-line ultrasonic top flow meter.
In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solutions:
a computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the ultrasonic-based flow meter flow calibration method.
In a fifth aspect, the application provides a monitoring system for a water meter ultrasonic flowmeter, which adopts the following technical scheme:
an online calibration system for a water meter based on an ultrasonic flowmeter, comprising:
a computer apparatus as claimed in claim 8;
offset detection means for detecting whether the position of the ultrasonic sensor is offset;
the ultrasonic flowmeter is used for measuring the flow value of the measured pipeline;
and the measured water meter is used for sending the measured pipeline flow value.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the method comprises the steps of detecting the position of an ultrasonic sensor, determining that the position of the ultrasonic sensor is not deviated, receiving a flow value measured by an ultrasonic flowmeter in real time, comparing the flow value with a preset threshold range to generate a comparison result, and determining whether to send abnormal flow notification information to a terminal according to the comparison result, so that remote management of the ultrasonic flowmeter is facilitated;
2. whether the position of the ultrasonic sensor deviates or not is determined based on the deviation information, and when the position of the ultrasonic sensor deviates is determined, deviation notification information is determined to be sent to a terminal, so that a worker can know the position deviation of the ultrasonic sensor in time;
3. the method comprises the steps of obtaining a flow velocity value, comparing the flow velocity value with a preset condition to obtain a comparison result, and determining whether to send check flow abnormal open information to a terminal according to the comparison result to check the measured flow value, so that the accuracy of data of the ultrasonic flowmeter is improved.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for ultrasonic-based flow calibration according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an apparatus for performing online calibration of a water meter based on an ultrasonic flow meter according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an apparatus for performing online calibration of a water meter based on an ultrasonic flowmeter according to an embodiment of the present application.
In the figure, 1, an offset detection module, 2, a flow acquisition module; 3. a flow comparison module; 4. a first execution module; 5. a flow rate acquisition module; 6. a calculation module; 7. a checking module; 8. a second execution module; 9. a deviation detecting device; 10. an ultrasonic flow meter; 11. a computer device.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a method for performing online calibration on a water meter based on an ultrasonic flowmeter, wherein the method for performing online calibration on the water meter based on the ultrasonic flowmeter 10 is based on the following preprocessing steps:
a data storage area of the target ultrasonic flowmeter 10 is established: according to actual requirements, a code is written for the ultrasonic flowmeter 10, and the corresponding code is recorded. And establishing a data storage area associated with the ultrasonic flowmeter 10 corresponding to the code number in a database according to the code number of the ultrasonic flowmeter 10, and recording the ultrasonic flowmeter 10 corresponding to the code number and the basic information of the measured pipeline into the corresponding data storage area.
The basic information includes the code of the ultrasonic flowmeter 10, the position information, the diameter of the pipe to be measured, the cross-sectional area, the wall thickness, and the density of the fluid in the pipe to be measured. The position information includes map information and position coordinates of the ultrasonic flow meter 10 on the map route, and a corresponding distance reference route between the ultrasonic flow meter 10 and the terminal, so as to provide guidance for a worker to reach the position of the ultrasonic flow meter 10.
As shown in fig. 1, the method for performing online calibration of a water meter based on an ultrasonic flowmeter comprises the following specific steps:
s1, receiving offset information sent by the ultrasonic sensor in real time to determine whether the position of the ultrasonic sensor is offset.
In the present embodiment, the ultrasonic flow meter 10 includes a flow rate measurement main unit and an ultrasonic sensor. In order not to contact the measured fluid, the ultrasonic flow meter 10 employs a clip-on type. The ultrasonic sensors are a pair and are respectively installed on the upstream pipe side and the downstream pipe side of the pipeline to be measured. During installation, the ultrasonic sensors are stably installed on the outer pipe wall of the measured pipeline by adopting a steel belt, in order to ensure stable signal transmission, the installation distance of the two ultrasonic sensors needs to be greater than the diameter of the measured pipeline, the ultrasonic sensors are installed by adopting a Z method, namely the two ultrasonic sensors are respectively installed on the two sides of the diameter direction of the section of the measured pipeline. In addition, the tested pipeline needs to select a straight pipe section with stable flow rate and full pipe.
The specific steps of receiving the offset information sent by the ultrasonic sensor in real time to determine whether the position of the ultrasonic sensor is offset include the following steps:
offset information is generated based on a signal state of an infrared signal on the ultrasonic sensor.
In this embodiment, an infrared emitter and an infrared receiver are installed between the ultrasonic sensor and the pipe to be measured, the infrared emitter emits infrared rays and is installed on the outer pipe wall of the pipe to be measured, and the infrared receiver receives the infrared rays emitted by the infrared emitter and is installed on the ultrasonic sensor.
(1) When the infrared receiver receives infrared rays emitted by the infrared emitter in opposite directions, the infrared signal is in a normal state, and offset information without offset of the ultrasonic sensor is generated.
(2) When the infrared receiver does not receive the infrared ray emitted from the infrared emitter, the infrared signal is in an abnormal state, and the offset information of the position offset of the ultrasonic sensor is generated.
Whether the position of the ultrasonic sensor is offset is determined based on the offset information. In the present embodiment, when the offset information is that the positions of the ultrasonic sensors are not offset, it is determined that the positions of the ultrasonic sensors are not offset, and it is thus determined that the ultrasonic flow meter 10 can start measuring the flow rate. And when the offset information is the position offset of the ultrasonic sensor, determining the position offset of the ultrasonic sensor so as to determine that offset notification information is sent to the terminal, and notifying workers that the position of the ultrasonic sensor is offset and needs to be processed in time.
And S2, receiving the flow value measured by the ultrasonic flowmeter 10 in real time.
The flow value is measured by the ultrasonic flowmeter 10, and since the fluid medium in the pipe to be measured is water, the ultrasonic flowmeter 10 can measure the flow of water by using a time difference method.
And S3, comparing the flow value measured by the ultrasonic flowmeter 10 with a preset flow threshold range to obtain a comparison result.
Specifically, the method comprises the following steps:
the preset flow threshold range is preset or set and stored according to the standard flow corresponding to the full pipe of the pipe to be measured, so as to judge the accuracy of the flow value measured by the ultrasonic flowmeter 10.
Such as: the preset threshold range is set in the range of the allowable error of the preset flow threshold. If the preset flow threshold is 55.34m 3/h, the accuracy of the allowable error of the flow threshold is +/-1%. Thus, the preset flow threshold range is [55.33, 55.35]. If the flow value obtained by calculation and measurement of the ultrasonic flow meter 10 is 55.344m3/h, the flow value is within the preset threshold range, so that the measured flow value is normal; if the flow value measured by the ultrasonic flow meter 10 is 55.32m ^3/h, the flow value measured by the ultrasonic flow meter 10 is not within the preset threshold range at the moment, thereby indicating that the measured flow value is abnormal.
And S4, determining whether to carry out calibration operation of the water meter to be detected or not according to the comparison result.
(1) When the flow value measured by the ultrasonic flowmeter 10 is within the preset flow threshold range, it indicates that the flow measurement of the ultrasonic flowmeter 10 is normal, determines not to send abnormal flow notification information to the terminal, and determines to perform the calibration operation of the measured water meter, and the specific steps are as follows:
and acquiring the flow value measured by the measured water meter. The water meter to be measured is arranged on the pipeline to be measured and is used for measuring the flow of the pipeline to be measured.
And comparing the flow value measured by the measured water meter with a preset flow threshold range to obtain a comparison result.
And determining whether to send the abnormal calibration information of the measured water meter to the terminal or not based on the comparison result. When the flow value measured by the measured water meter is within the preset flow threshold range, the flow value measured by the measured water meter and the flow value measured by the ultrasonic flowmeter 10 are within the preset obtained flow threshold range, namely the ultrasonic flowmeter 10 is accurate in calibration of the measured water meter, it is determined that the measured water meter calibration abnormal information is not sent to the terminal, and when the flow value measured by the ultrasonic flowmeter 10 is not within the preset flow threshold range, namely the flow value between the ultrasonic flowmeter 10 and the measured water meter has an error, the calibration result is inaccurate, so that the calibration flow abnormal information is determined to be sent to the terminal.
(2) When the flow value measured by the ultrasonic flowmeter 10 is not within the preset threshold range, the flow value measured by the ultrasonic flowmeter 10 is abnormal, the calibration operation of the measured water meter is not performed, and the fact that the notification information of the abnormal flow is sent to the terminal is determined, so that the staff can be notified to check the reason of the abnormal flow in time.
The difference from the above steps is that when the flow value measured by the ultrasonic flow meter 10 is within the preset flow range, in order to improve the accuracy of the flow value measured by the ultrasonic flow meter 10, a flow verification operation may be performed to verify the flow value measured by the ultrasonic flow meter 10, so that the method for performing online calibration of a water meter based on the ultrasonic flow meter 10 further includes:
the flow rate values measured from the ultrasonic flow meter 10 are received in real time.
In this embodiment, the flow rate value is measured from another ultrasonic flow meter 10 and received in real time.
And comparing the flow rate value with a preset condition to obtain a comparison result.
In this embodiment, the specific steps of comparing the flow rate value with the preset condition to obtain the comparison result are as follows:
(1) And multiplying the flow velocity value by the preset section area of the pipeline to be detected to obtain a verified flow value.
(2) And subtracting the measured flow value from the check flow value to calculate, and obtaining an absolute value of the difference between the check flow value and the measured flow value.
(3) The absolute value of the difference between the check flow value and the measured flow value is compared with a preset allowable error range to obtain a comparison result, so that it can be determined whether the error between the measured flow value and the check flow value is within the allowable error range.
Such as: if the measured flow velocity value is 5.031m/s, the preset cross-sectional area of the measured pipeline is 11m ^2, so that the verification flow value is 55.341m ^3/h, and meanwhile, if the flow value measured by the first ultrasonic flowmeter 10 is 55.344, the absolute value of the difference between the verification flow value and the flow value measured by the ultrasonic flowmeter 10 is 0.01. Comparing the absolute value of the difference between the verified flow rate value and the flow rate value measured by the ultrasonic flowmeter 10 with a preset allowable error range, and setting the preset allowable error range to be [0,0.01], so that the absolute value of the difference between the verified flow rate value and the measured flow rate value is within the preset allowable error range. Otherwise, the range is not preset.
And determining whether to send notification information of abnormal check flow to the terminal according to the check result. When the absolute value of the difference between the verified flow value and the flow value measured by the ultrasonic flowmeter 10 is within the preset allowable error range, determining that verification flow abnormity notification information is not sent to the terminal, indicating that the verified flow value and the measured flow value are verified to be accurate within the allowable error range, verifying that the measured flow value is accurate, obtaining the accurate flow value measured by the ultrasonic flowmeter 10, and thus performing calibration operation on the measured water meter; when the absolute value of the difference between the verified flow value and the flow value measured by the ultrasonic flow meter 10 is not within the preset allowable error range, it is determined to transmit verification flow notification information to the terminal, and a worker is notified to check the reason for the abnormal verification flow.
In addition, when the worker receives the deviation notification information, the measured water meter calibration abnormality notification information, the flow abnormality notification information, and the verification flow abnormality notification information, the worker arrives at the designated place to perform maintenance and repair on the pipe, the ultrasonic flow meter 10, and the water meter. And filling and submitting a maintenance report so as to facilitate the subsequent information query to receive the maintenance report which is input by the terminal based on the two-dimension code scanning on the ultrasonic flowmeter 10. In addition, the ultrasonic flowmeters 10 are all pasted with two-dimensional codes, and the terminal records corresponding maintenance information based on the two-dimensional codes, generates a maintenance report, submits the maintenance report and stores corresponding data storage areas. The maintenance information comprises abnormal reasons, maintenance time, maintenance conditions and maintenance personnel and is stored in the corresponding data storage area so as to facilitate the searching records of the follow-up working personnel.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the present invention.
The embodiment of the application also discloses a method for water meter online calibration based on the ultrasonic flowmeter, and the method for water meter online calibration based on the ultrasonic flowmeter 10 corresponds to the method for monitoring the flow of the ultrasonic flowmeter of the water meter one by one. As shown in fig. 3, the flow monitoring device of the ultrasonic flowmeter 10 for a water meter includes a deviation detection module 1, a flow obtaining module 2, a flow comparison module 3, and a flow execution module. The modules of each function are explained in detail as follows:
offset detection module 1: for receiving offset information from the ultrasonic sensor in real time.
A flow receiving module: the flow values measured from the ultrasonic flow meter 10 are received in real time.
The flow comparison module 3: and the flow value is compared with a preset threshold range, and a comparison result is obtained.
The first execution module 4: and the controller is used for determining whether to perform the calibration operation of the water meter to be tested or not based on the comparison result.
Specifically, the method comprises the following steps:
first, the offset information receiving module can receive offset information from the ultrasonic sensor to detect the ultrasonic sensor. When the ultrasonic sensor is determined to have no offset, the flow receiving module receives the flow value measured by the ultrasonic flow meter 10, and transmits the flow value to the flow comparison module 3 to be compared with a preset flow threshold range, so as to obtain a comparison result. The first execution module 4 then determines whether to perform a calibration operation of the water meter under test according to the comparison result.
Furthermore, for can improve the accuracy of flow value measurement, carry out the check-up to the flow value of measuring to reduce the error of flow when measuring, carry out water gauge on-line calibration device based on ultrasonic flowmeter still includes:
the flow rate acquisition module 5: for obtaining flow rate values in real time from measurements made by the ultrasonic flow meter 10.
The calculation module 6: the flow velocity value is multiplied by the preset cross-sectional area of the pipeline to obtain a check flow value, and the check flow value is subtracted from the measured flow value to obtain the absolute value of the difference between the check flow value and the measured flow value.
The checking module 7: and the device is used for comparing the measurement error with a preset allowable error range to obtain a verification result.
The second execution module 8: and the system is used for determining whether to send the notification information of the abnormal check flow to the terminal according to the check result.
It should be noted that the measurement of the verification flow rate value can improve the accuracy of the measurement flow rate value measured by the ultrasonic flow meter 10. The flow velocity obtaining module 5 obtains a flow velocity value measured by the ultrasonic flowmeter 10, calculates the flow velocity value and the cross-sectional area of the pipeline by using the calculating module 6 to obtain a check flow value, subtracts the check flow value and the flow value measured by the ultrasonic flowmeter 10 to obtain an absolute value, compares the absolute value of the difference between the check flow value and the flow value measured by the ultrasonic flowmeter 10 with a preset allowable error range to obtain a check result, and sends the check result to the second execution module 8. The second execution module 8 determines whether to send verification notification information to the terminal according to the verification result, so that the staff can be notified of the flow verification abnormality measured by the ultrasonic flowmeter 10 in time.
In addition, carry out online calibrating device of water gauge based on ultrasonic flowmeter, still include:
a reception report module: the system comprises a terminal, a server and a server, and is used for receiving maintenance information recorded based on terminal scanning and generating a maintenance information report, wherein the maintenance information comprises abnormal reasons, maintenance conditions, maintenance personnel and maintenance time.
The terminal may be a mobile phone capable of receiving the offset notification information, the flow measurement abnormality information, the measured water meter calibration abnormality notification information, and the verification notification information, a tablet computer capable of receiving the offset notification information, the flow measurement abnormality information, the measured water meter calibration abnormality notification information, and the verification notification information, or any other terminal device capable of receiving the offset notification information, the flow measurement abnormality information, the measured water meter calibration abnormality notification information, and the verification notification information.
For specific limitations of the device for performing online calibration of a water meter based on the ultrasonic flow meter 10, reference may be made to the above limitations of the method for performing online calibration of a water meter based on the ultrasonic flow meter 10, and details are not repeated. All or part of the modules in the device for performing online calibration on the water meter based on the ultrasonic flowmeter 10 can be realized by software, hardware and a combination thereof. The modules may be embedded in a hardware form or independent from a processor in the computer device 11, or may be stored in a memory in the computer device 11 in a software form, so that the processor calls to execute operations corresponding to the modules.
An embodiment of the present application further discloses a computer device, as shown in fig. 3, including a processor, a memory, a network interface, and a database, which are connected by a bus of the system. The memory has stored thereon a computer program that can be loaded by the processor and executed to perform the above-described method for meter calibration on-line based on the ultrasonic flow meter 10.
The computer program when executed by a processor implements a method for on-line calibration of a water meter based on an ultrasonic flow meter, comprising the steps of:
s1, receiving offset information sent by an ultrasonic sensor in real time to determine whether the position of the ultrasonic sensor is offset;
s2, receiving a flow value measured by the ultrasonic flowmeter 10 in real time;
s3, comparing the flow value measured by the ultrasonic flowmeter 10 with a preset flow threshold range to obtain a comparison result;
and S4, determining whether to carry out calibration operation of the water meter to be detected or not according to the comparison result.
Wherein the processor of the computer device 11 is used to provide computing and control capabilities. The memory of the computer device 11 includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device 11 is used for storing basic information of the ultrasonic flow meter 10, the pipe to be measured and the water meter to be measured, a flow value and a flow velocity value measured by the ultrasonic flow meter 10, a check flow value multiplied by a cross-sectional area of the pipe, and an absolute value of a difference between the check flow value and the measured flow value. The network interface of the computer device 11 is used for communicating with an external terminal through a network connection.
The embodiment of the application further discloses a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the method for performing online calibration of a water meter based on an ultrasonic flowmeter is implemented, and the method specifically includes the following steps:
s1, receiving offset information sent by an ultrasonic sensor in real time to determine whether the position of the ultrasonic sensor is offset;
s2, receiving a flow value measured by the ultrasonic flowmeter 10 in real time;
s3, comparing the flow value measured by the ultrasonic flowmeter 10 with a preset flow threshold range to obtain a comparison result;
and S4, determining whether to carry out calibration operation of the water meter to be detected according to the comparison result.
It will be understood by those skilled in the art that all or part of the processes for implementing a method for online calibration of a water meter based on an ultrasonic flow meter may be implemented by a computer program that can be stored in a non-volatile computer-readable storage medium and that, when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The embodiment of the present application further discloses a system for performing online calibration of a water meter based on an ultrasonic flowmeter, as shown in fig. 3, the system for performing online calibration of a water meter based on an ultrasonic flowmeter 10 includes: an ultrasonic flow meter 10 and a computer device 11.
The ultrasonic flow meter 10: for measuring the flow of water in the pipe under test.
The computer device 11: the ultrasonic flow meter calibration device is used for receiving offset information of an ultrasonic sensor, receiving a flow value measured by the ultrasonic flow meter 10 when the position of the ultrasonic sensor is determined to be not offset, comparing the flow value with a preset threshold range to obtain a comparison result, determining whether to carry out calibration operation on a water meter to be measured according to the comparison result, simultaneously receiving measurement of a flow rate value of another ultrasonic flow meter 10, multiplying the flow rate value with a preset pipeline section area to obtain a check flow rate value, and comparing the check flow rate value with the flow value measured by the ultrasonic flow meter 10 to obtain a comparison result.
In this embodiment, the computer device 11 is a server, the number of the ultrasonic flow meters 10 can be set to be multiple according to the number of the pipes to be measured, and the computer device 11 and the ultrasonic flow meters 10 are connected in communication through a wireless network.
It should be noted that an offset detection device 9 is disposed between the ultrasonic flowmeter 10 and the pipe to be measured, the offset detection device 9 includes an infrared transmitter and an infrared receiver, the infrared transmitter is mounted on the ultrasonic sensor of the ultrasonic flowmeter 10, the red o i receiver is mounted on the pipe to be measured, and the infrared receiver is wirelessly connected to the computer device 11, so that the computer device 11 receives an offset signal of the infrared receiver.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. A method for performing online calibration on a water meter based on an ultrasonic flowmeter is characterized by comprising the following steps:
receiving offset information sent by the ultrasonic sensor in real time to determine whether the position of the ultrasonic sensor is offset;
when the position of the ultrasonic sensor is not deviated, determining to carry out flow measurement of the ultrasonic flowmeter;
receiving a flow value measured by an ultrasonic flowmeter in real time;
comparing the flow value with a preset threshold range to obtain a comparison result;
determining whether to carry out calibration operation of the water meter to be detected or not according to the comparison result;
when the flow value measured by the ultrasonic flowmeter is within the preset flow threshold range, the calibration operation of the measured water meter is carried out;
when the flow value measured by the ultrasonic flowmeter is not within the preset flow threshold range, the calibration operation of the measured water meter is not carried out, and the abnormal flow notification information is determined to be sent to the terminal;
the step of receiving offset information sent by the ultrasonic sensor in real time comprises the following steps:
generating offset information according to the signal state of the infrared signal on the ultrasonic sensor:
the signal states comprise a normal state and an abnormal state;
when the signal state is a normal state and does not change within a preset time, the position of the ultrasonic sensor does not deviate, and deviation information of the position of the ultrasonic sensor without deviation is generated;
when the signal state is an abnormal state and does not change within a preset time, the position of the ultrasonic sensor deviates, and deviation information of the position deviation of the ultrasonic sensor is generated;
determining whether the position of the ultrasonic sensor is offset based on the offset information.
2. The method of claim 1, wherein the step of performing a measured water meter calibration operation comprises:
acquiring a flow value measured by a measured water meter;
comparing the flow value measured by the measured water meter with a preset flow threshold range to obtain a comparison result;
and determining whether to send the abnormal calibration information of the measured water meter to the terminal or not based on the comparison result.
3. The method of claim 1, further comprising:
receiving a flow velocity value measured by an ultrasonic flowmeter in real time;
comparing the flow velocity value with a preset condition to obtain a comparison result;
determining whether to send notification information of abnormal check flow to the terminal according to the comparison result;
and when the check flow value does not meet the preset condition, determining to send check flow abnormal notification information to the terminal.
4. The method of claim 3, wherein the step of comparing the flow rate value with a predetermined condition to obtain a comparison result comprises:
multiplying the flow velocity value by a preset pipeline section area to obtain a check flow value;
subtracting the flow value measured by the ultrasonic flowmeter from the check flow value to obtain an absolute value of the difference between the check flow value and the flow value;
and comparing the absolute value of the difference between the verified flow value and the flow value measured by the ultrasonic flowmeter with an allowable error range to obtain a comparison result.
5. An on-line water meter calibration device based on an ultrasonic flowmeter is characterized by comprising,
the offset detection module is used for receiving offset information sent by the ultrasonic sensor in real time so as to determine whether the position of the ultrasonic sensor is offset or not;
the flow receiving module is used for receiving a flow value measured by the ultrasonic flowmeter in real time;
the flow comparison module is used for comparing the flow value with a preset threshold range and obtaining a comparison result;
the first flow execution module is used for determining whether to send abnormal flow notification information to the terminal or not based on the comparison result;
the step of receiving the offset information sent by the ultrasonic sensor in real time comprises the following steps:
generating offset information according to the signal state of the infrared signal on the ultrasonic sensor:
the signal states comprise a normal state and an abnormal state;
when the signal state is a normal state and does not change within a preset time, the position of the ultrasonic sensor does not deviate, and deviation information of the position of the ultrasonic sensor without deviation is generated;
when the signal state is an abnormal state and does not change within a preset time, the position of the ultrasonic sensor deviates, and deviation information of the position deviation of the ultrasonic sensor is generated;
determining whether the position of the ultrasonic sensor is offset based on the offset information.
6. A water meter ultrasonic flow meter monitoring device according to claim 5, comprising,
the flow rate acquisition module is used for acquiring a flow rate value measured by the ultrasonic flowmeter in real time;
the calculation module is used for multiplying the flow velocity value by the preset pipeline section area to obtain a check flow value, and subtracting the check flow value from the measured flow value to obtain an absolute value of the difference between the check flow value and the measured flow value;
the checking module is used for comparing the measurement error with a preset allowable error range to obtain a checking result;
and the second flow execution module is used for determining whether to send the notification information of the abnormal check flow to the terminal according to the check result.
7. A computer device comprising a memory and a processor, said memory having stored thereon a computer program that can be loaded by the processor and executed in accordance with any one of the preceding claims 1-4.
8. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which when executed by a processor, performs the steps of the method for flow monitoring in an ultrasonic flow meter of a water meter as claimed in any one of claims 1 to 4.
9. An online water meter calibration system based on an ultrasonic flowmeter is characterized by comprising:
a computer apparatus as claimed in claim 7;
offset detection means for detecting whether the position of the ultrasonic sensor is offset;
the ultrasonic flowmeter is used for measuring the flow value of a measured pipeline and calibrating the measured top water meter;
and the measured water meter is used for sending the measured pipeline flow value.
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| CN113049068B (en) * | 2021-03-15 | 2024-05-31 | 珠海旺远信息技术有限公司 | Calibration system and calibration method of ultrasonic metering device |
| CN113641133A (en) * | 2021-08-23 | 2021-11-12 | 阳光电源股份有限公司 | Flowmeter fault diagnosis method, monitoring system and liquid circulation system |
| CN113959536B (en) * | 2021-10-21 | 2023-11-21 | 宁波水表(集团)股份有限公司 | Denoising method, equipment, medium and product of jet water meter |
| CN114235100A (en) * | 2021-11-17 | 2022-03-25 | 潍柴动力股份有限公司 | Correction method and device for venturi tube measured flow |
| CN114235107A (en) * | 2021-12-22 | 2022-03-25 | 北京奥特美克科技股份有限公司 | Open channel flow measurement calibration method and calibration system |
| CN114485863A (en) * | 2021-12-24 | 2022-05-13 | 广东艾科技术股份有限公司 | Flow error correction method, system, computer and medium for ultrasonic water meter |
| CN114414009B (en) * | 2021-12-31 | 2024-08-13 | 三一汽车制造有限公司 | Material level measuring system calibration method and device, material level measuring system and stirring station |
| CN116147741B (en) * | 2023-01-12 | 2024-05-31 | 宁夏隆基宁光仪表股份有限公司 | NB-IoT based ultrasonic water meter flow calibration method and system |
| CN117610793B (en) * | 2024-01-22 | 2024-04-12 | 成都秦川物联网科技股份有限公司 | Intelligent water meter remote maintenance method and device and Internet of things system |
| CN117664281B (en) * | 2024-01-29 | 2024-04-09 | 成都秦川物联网科技股份有限公司 | Ultrasonic water meter fault detection and automatic calibration method and system based on Internet of Things |
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| CN107440720B (en) * | 2012-06-27 | 2020-09-08 | 东芝医疗系统株式会社 | Ultrasonic diagnostic apparatus and method for correcting image data |
| JP6216601B2 (en) * | 2013-10-09 | 2017-10-18 | 旭有機材株式会社 | Flow control device |
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