CN114608678A - Water meter calibration method and device based on pulse method - Google Patents
Water meter calibration method and device based on pulse method Download PDFInfo
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- CN114608678A CN114608678A CN202210286361.1A CN202210286361A CN114608678A CN 114608678 A CN114608678 A CN 114608678A CN 202210286361 A CN202210286361 A CN 202210286361A CN 114608678 A CN114608678 A CN 114608678A
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
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Abstract
The invention discloses a water meter calibration method and a water meter calibration device based on a pulse method, wherein the method comprises the following steps: determining that the standard water meter and the measured water meter are connected to the water meter detection equipment in series; controlling water of different water conditions to be sequentially introduced into the standard water meter and the measured water meter, wherein the water condition parameters comprise flow rate, water pressure and water temperature; collecting pulses of the standard water meter and the measured water meter in the same time period, and recording each pulse time point; calculating the error of the measured water meter under the corresponding water condition according to the pulse acquired under the same water condition; and correspondingly calibrating the measured water meter according to the error data of the measured water meter. By adopting the technical scheme of the invention, errors under the conditions of different flow rates, different water temperatures, different water pressures and the like can be measured in a shorter time, the measurement efficiency and the measurement precision are improved, and the calibration of the measured water meter is more accurate.
Description
Technical Field
The invention relates to the technical field of water meter calibration, in particular to a water meter calibration method and device based on a pulse method.
Background
During the calibration work of a water meter laboratory, a start-stop volume method is mostly used for calibrating small-caliber and series-type water meter calibration devices; and (4) using a bearing method to calibrate the automatic water meter calibrating device. The small-caliber water meter detection device and the series-connection type water meter calibration device both need manual visual inspection to read data displayed on a water meter dial, then a flow regulating valve is opened to enable the flow to reach a detection flow point, the flow regulating valve is closed until the accumulated flow reaches a detection standard, the workload and the data displayed on the water meter dial are read manually after the numerical value is stable, and then the error of the calibration numerical value of the water meter detection device is calculated. The following technical drawbacks exist:
(1) the detection process has the disadvantages of long time consumption, excessive water consumption in detection, low measurement efficiency, poor measurement precision and high resource consumption.
The error of the water meter is easy to change greatly under the conditions of different flow rates, different water temperatures and different water pressures, however, the errors under the conditions of different flow rates, different water temperatures, different water pressures and the like are difficult to measure in a short time by the methods, the adaptability is poor, and the requirements of the modern society are difficult to meet.
Disclosure of Invention
The invention aims to provide a water meter calibration method and a water meter calibration device based on a pulse method.
In a first aspect of the present invention, a water meter calibration method based on a pulse method is provided, which includes the following steps: determining that the standard water meter and the measured water meter are connected in series on the water meter detection equipment; controlling water of different water conditions to be sequentially introduced into the standard water meter and the measured water meter, wherein the water condition parameters comprise flow rate, water pressure and water temperature; collecting pulses of the standard water meter and the measured water meter in the same time period, and recording each pulse time point; calculating the error of the measured water meter under the corresponding water condition according to the pulse acquired under the same water condition; and correspondingly calibrating the measured water meter according to the error data of the measured water meter.
In the technical scheme, the standard water meter and the measured water meter are connected in series on the water meter detection equipment, and water with different water conditions is controlled to be introduced into the standard water meter and the measured water meter, so that errors of the standard water meter and the measured water meter are respectively measured under the conditions of different flow rates, different water temperatures, different water pressures and the like. The measured water quantity value is subdivided into pulses, and then the pulse output condition of the measured meter under the same water condition is compared with the pulse output condition of the standard meter to calculate errors, so that the measuring efficiency and the measuring precision are greatly improved. Through according to the measurand water gauge error data under the different water conditions, correspond the calibration measurand water gauge, fully synthesized the error under the condition of different velocity of flow, different temperature and different water pressure for the calibration of measurand water gauge is more accurate, and the measurand water gauge after the calibration is under the condition of different velocity of flow, different temperature and different water pressure, and the accuracy is higher. And the error measurement time of the measured water meter is short, the measurement efficiency is high, and the resource consumption is low.
It should be noted that, one ton of water is divided into 10000 pulses, and each time the water amount increases by 0.1L, the water meter sends out one pulse, the number of pulses represents the increased water amount, and the frequency of sending out pulses represents the water flow speed. The standard meter is a high-precision water meter which is calibrated by errors through a traditional method, can accurately measure at different flow rates, different water temperatures and different water pressures and can also send pulses.
In the above technical solution, preferably, the controlling of sequentially introducing water of different water conditions to the standard water meter and the measured water meter includes the following steps: pre-storing water condition parameters of different water conditions, wherein the water condition parameters comprise flow rate, water pressure and water temperature; and sequentially calling water condition parameters according to a preset period, and introducing water to the standard water meter and the measured water meter according to the called water condition parameters.
In the technical scheme, the water condition parameters of different water conditions are stored in advance, then the water condition parameters are sequentially called according to the preset period, and water is supplied to the standard water meter and the measured water meter according to the called water condition parameters, so that the measuring time is further shortened, the measurement can be carried out continuously, and the measuring efficiency is greatly improved.
The preset period may be a fixed value, and the time required for introducing 0.5L of water according to the minimum flow rate in the water condition parameters, for example, the minimum flow rate is 0.1L/min, and the preset period may be 5 min.
In any one of the above technical solutions, preferably, the method further includes: and pre-storing a corresponding relation data table of the preset period and the water condition parameters.
In the technical scheme, the preset period is set corresponding to the water condition parameters, and the preset period is the time required by the executed latest water condition parameter to complete the measurement, so that the measurement efficiency is further improved.
The first water condition parameter is directly executed, the second water condition parameter is called according to a first preset period which is set corresponding to the first water condition parameter, namely when the execution time of the first water condition parameter reaches the first preset period, the second water condition parameter is called, and the like.
In any one of the above technical solutions, preferably, the method further includes: gather standard water gauge with the pulse of measurand water gauge in same time quantum to record every pulse time point, specifically include: starting timing when water starts to flow according to each water condition parameter; simultaneously collecting pulses sequentially sent by the standard water meter and the measured water meter, and recording each pulse time point; and when the number of the collected pulses sent by the standard water meter and the measured water meter reaches the designated number, resetting the timing.
In the technical scheme, the pulses sequentially sent by the standard water meter and the measured water meter are simultaneously acquired under each water condition parameter, and the acquired pulses are the same in number, so that the error is calculated more conveniently and accurately, and the prediction accuracy is improved.
In any one of the above technical solutions, preferably, the controlling of sequentially introducing water of different water conditions into the standard water meter and the measured water meter includes the following steps: pre-storing water condition parameters of different water conditions, wherein the water condition parameters comprise flow rate, water pressure and water temperature; sequentially calling water condition parameters, and controlling to call the next water condition parameter when the number of pulses sent by the standard water meter and the measured water meter which are collected under the water condition reaches a specified number; and water is led to the standard water meter and the measured water meter according to the called water condition parameters.
In the technical scheme, after the number of the pulses sent by the standard water meter and the measured water meter which are collected under the water condition reaches the designated number, the next water condition parameter is controlled and taken, the switching of the water condition parameters is more timely, the measurement efficiency is further improved, and the measurement time is saved.
In any of the above technical solutions, the water condition parameter is set to a plurality of standard water conditions according to the specification of the measured water meter, including a plurality of groups of water condition parameters, and water is sequentially supplied to the standard water meter and the measured water meter according to the plurality of groups of water condition parameters, when the water condition parameters collected by the standard water meter and the measured water meter are the same, pulse collection is started, and a plurality of standard water conditions are set according to the specification of the measured water meter, so that a measurement error is calculated and controlled, measurement misalignment is avoided, the calculation accuracy of the standard water meter is monitored, and the measurement error of the measured water meter is reduced.
In any one of the above technical solutions, preferably, the method for calculating the error of the measured water meter under the corresponding water condition according to the pulses collected under the same water condition includes the following steps:
acquiring a first pulse time point and an Nth pulse time point of the standard water meter and the measured water meter which are acquired under the same water condition, wherein N is equal to the total number of pulses acquired under the corresponding water condition;
according to the Nth pulse time point and the first pulse time point of the standard water meter, calculating the time interval between two pulses of the standard water meter according to a first preset formula, wherein the first preset formula is as follows: Δ Tb = (Tb)N-Tb1) /(N-1), where Δ Tb is the time interval between two pulses of a standard water meter, TbNCharacterised by the Nth pulse time, Tb, of the standard water meter1Characterizing a first pulse time point of a standard water meter;
according to the Nth pulse time point and the first pulse time point of the measured water meter, calculating the time interval between two pulses of the measured water meter according to a second preset formula, wherein the second preset formula is as follows: Δ Tc = (Tc)N-Tc1) /(N-1), wherein Δ Tc is characterized by the time interval between two pulses of the measured water, TcNCharacterised by the nth pulse time point, Tc, of the water meter being measured1The characteristic is the first pulse time point of the measured water meter;
according to the time interval between two pulses of the standard water meter and the time interval between two pulses of the measured water meter, calculating the error of the measured water meter under the corresponding water condition according to a third preset formula, wherein the third preset formula is as follows: err = (Δ Tb-Tc)/Δ Tb, where Δ Tb is the time interval between two pulses of a standard water meter, Δ Tc is the time interval between two pulses of a measured water meter, and err is the error of the measured water meter.
In the technical scheme, the error of the measured water meter is calculated by recording a plurality of pulse time points in the same time period and taking the average value of the time intervals between two pulses, so that the measurement accuracy, the accuracy and the prediction accuracy are improved.
In a second aspect of the present invention, a water meter calibration device based on a pulse method is provided, including: the determining unit is used for determining that the standard water meter and the measured water meter are connected on the water meter detection equipment in series;
the control unit is used for controlling water with different water conditions to be sequentially introduced into the standard water meter and the measured water meter, wherein the water condition parameters comprise flow rate, water pressure and water temperature; the acquisition and recording unit is used for acquiring pulses of the standard water meter and the measured water meter in the same time period and recording each pulse time point;
the calculation unit is used for calculating the error of the measured water meter under the corresponding water condition according to the pulse acquired under the same water condition; and the calibration unit is used for correspondingly calibrating the measured water meter according to the error data of the measured water meter.
In the technical scheme, the standard water meter and the measured water meter are connected in series on the water meter detection equipment, and water with different water conditions is controlled to be introduced into the standard water meter and the measured water meter, so that errors of the standard water meter and the measured water meter are respectively measured under the conditions of different flow rates, different water temperatures, different water pressures and the like. The measured water quantity value is subdivided into pulses, and then the pulse output condition of the measured meter under the same water condition is compared with the pulse output condition of the standard meter to calculate errors, so that the measuring efficiency and the measuring precision are greatly improved. Through according to the measurand water gauge error data under the different water conditions, correspond the calibration measurand water gauge, fully synthesized the error under the condition of different velocity of flow, different temperature and different water pressure for the calibration of measurand water gauge is more accurate, and the measurand water gauge after the calibration is under the condition of different velocity of flow, different temperature and different water pressure, and the accuracy is higher. And the error measurement time of the measured water meter is short, the measurement efficiency is high, and the resource consumption is low.
In a third aspect of the invention, an apparatus is presented, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method as described in the first aspect.
In a fourth aspect of the present invention a computer-readable storage medium is presented, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to the first aspect.
The water meter calibration method and device based on the pulse method, which are provided by the technical scheme of the invention, have the following beneficial technical effects:
(1) the measured water quantity value is subdivided into pulses, and then the pulse conditions of the measured meter under the same water condition are compared with the pulse conditions obtained by the standard meter to calculate errors, so that the measuring efficiency and the measuring precision are greatly improved, the errors under the conditions of different flow rates, different water temperatures, different water pressures and the like can be measured in a short time, and the method is particularly suitable for being used under the condition of large-scale production inspection.
(2) Through with standard water gauge and measurand water gauge series connection on water gauge check out test set, control lets in the water of different water conditions to standard water gauge and measurand water gauge, thereby realize to the difference measurement of different velocity of flow, standard water gauge and measurand water gauge error under the circumstances such as different temperature and different water pressure, through measurand water gauge error data under according to different water conditions, correspond the calibration measurand water gauge, different velocity of flow have fully been synthesized, error under the circumstances such as different temperature and different water pressure, make the calibration of measurand water gauge more accurate, measurand water gauge after the calibration is under the circumstances of different velocity of flow, different temperature and different water pressure, the accuracy is higher.
(3) The measuring time of the error of the measured water meter is short, the measuring efficiency is high, and the resource consumption is low.
Drawings
FIG. 1 is a flow chart illustrating a method for calibrating a water meter based on a pulse method according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating a method of calibrating a water meter based on the pulse method according to another embodiment of the present invention;
figure 3 shows a schematic diagram of a water meter calibration arrangement based on the pulse method according to an embodiment of the invention;
FIG. 4 illustrates a block diagram of an exemplary electronic device capable of implementing embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart illustrating a water meter calibration method based on a pulse method according to an embodiment of the present invention, and as shown in fig. 1, a water meter calibration method based on a pulse method includes the following steps:
s102, determining that the standard water meter and the measured water meter are connected to the water meter detection equipment in series;
s104, controlling water of different water conditions to be sequentially introduced into the standard water meter and the measured water meter, wherein the water condition parameters comprise flow rate, water pressure and water temperature;
s106, collecting pulses of the standard water meter and the measured water meter in the same time period, and recording each pulse time point;
s108, calculating the error of the measured water meter under the corresponding water condition according to the pulse acquired under the same water condition;
and S110, correspondingly calibrating the water meter to be measured according to the error data of the water meter to be measured.
In the embodiment, the standard water meter and the measured water meter are connected in series on the water meter detection equipment, and water with different water conditions is controlled to be introduced into the standard water meter and the measured water meter, so that errors of the standard water meter and the measured water meter are respectively measured under the conditions of different flow rates, different water temperatures, different water pressures and the like. The measured water quantity value is subdivided into pulses, and then the pulse output condition of the measured meter under the same water condition is compared with the pulse output condition of the standard meter to calculate errors, so that the measuring efficiency and the measuring precision are greatly improved. Through according to the measurand water gauge error data under the different water conditions, correspond the calibration measurand water gauge, fully synthesized different velocity of flow, different temperature and the error under the different hydraulic circumstances for the calibration of measurand water gauge is more accurate, and the measurand water gauge after the calibration is under the different velocity of flow, different temperature and different hydraulic circumstances, and the accuracy is higher. And the error measurement time of the measured water meter is short, the measurement efficiency is high, and the resource consumption is low.
It should be noted that, one ton of water is divided into 10000 pulses, and each time the water amount increases by 0.1L, the water meter sends out one pulse, the number of pulses represents the increased water amount, and the frequency of sending out pulses represents the water flow speed. The standard meter is a high-precision water meter which is calibrated by errors through a traditional method, can accurately measure at different flow rates, different water temperatures and different water pressures and can also send pulses.
Further, step S104, controlling to sequentially introduce water of different water conditions into the standard water meter and the measured water meter, includes the following steps: pre-storing water condition parameters of different water conditions, wherein the water condition parameters comprise flow rate, water pressure and water temperature; and sequentially calling water condition parameters according to a preset period, and introducing water to the standard water meter and the measured water meter according to the called water condition parameters.
The water condition parameters of different water conditions are stored in advance, then the water condition parameters are sequentially called according to the preset period, and water is supplied to the standard water meter and the measured water meter according to the called water condition parameters, so that the measuring time is further shortened, the measurement can be carried out continuously, and the measuring efficiency is greatly improved.
The preset period may be a fixed value, and the time required for introducing 0.5L of water according to the minimum flow rate in the water condition parameters, for example, the minimum flow rate is 0.1L/min, and the preset period may be 5 min.
Further, step S104, controlling to sequentially feed water with different water conditions to the standard water meter and the measured water meter, further includes the following steps: and pre-storing a corresponding relation data table of the preset period and the water condition parameters.
The preset period is set corresponding to the water condition parameters, and is the time required by the executed latest water condition parameter to finish the measurement, so that the measurement efficiency is further improved.
The first water condition parameter is directly executed, the second water condition parameter is called according to a first preset period which is set corresponding to the first water condition parameter, namely when the execution time of the first water condition parameter reaches the first preset period, the second water condition parameter is called, and the like.
Or step S104, controlling the water of different water conditions to be sequentially introduced into the standard water meter and the measured water meter, and comprising the following steps: pre-storing water condition parameters of different water conditions, wherein the water condition parameters comprise flow rate, water pressure and water temperature; sequentially calling water condition parameters, and controlling to call the next water condition parameter when the number of pulses sent by the standard water meter and the measured water meter which are collected under the water condition reaches the specified number; and (5) leading water to the standard water meter and the measured water meter according to the called water condition parameters.
After the number of pulses sent by the standard water meter and the measured water meter which are collected under the water condition reaches the specified number, the next water condition parameter is controlled and taken, the switching of the water condition parameters is more timely, the measurement efficiency is further improved, and the measurement time is saved.
The method comprises the steps of adjusting water condition parameters, correspondingly setting a plurality of standard water conditions including a plurality of groups of water condition parameters according to the specification of a measured water meter, sequentially supplying water to the standard water meter and the measured water meter according to the plurality of groups of water condition parameters, starting pulse acquisition when the water condition parameters acquired by the standard water meter and the measured water meter are the same, setting a plurality of standard water conditions according to the specification of the measured water meter, facilitating calculation and control of measurement errors, avoiding measurement misalignment, facilitating monitoring of the calculation accuracy of the standard water meter, and reducing measurement errors of the measured water meter.
Further, step S106, collecting pulses of the standard water meter and the measured water meter in the same time period, and recording each pulse time point, specifically including: starting timing when water starts to flow according to each water condition parameter; simultaneously collecting pulses sequentially sent by the standard water meter and the measured water meter, and recording each pulse time point; and when the number of the collected pulses sent by the standard water meter and the measured water meter reaches the designated number, resetting the timing.
The pulses sequentially sent by the standard water meter and the measured water meter are collected simultaneously under each water condition parameter, and the number of the collected pulses is the same, so that the error is calculated more conveniently and accurately, and the prediction accuracy is improved.
Further, step S108, calculating the error of the measured water meter under the corresponding water condition according to the pulse collected under the same water condition, includes the following steps: acquiring a first pulse time point and an Nth pulse time point of the standard water meter and the measured water meter which are acquired under the same water condition, wherein N is equal to the total number of pulses acquired under the corresponding water condition;
calculating the time interval between two pulses of the standard water meter according to the Nth pulse time point and the first pulse time point of the standard water meter and a first preset formula, wherein the first preset formula is as follows: Δ Tb = (Tb)N-Tb1) /(N-1), where Δ Tb is the time interval between two pulses of a standard water meter, TbNCharacterised by the Nth pulse time, Tb, of the standard water meter1Characterizing a first pulse time point of a standard water meter;
according to the Nth pulse time point and the first pulse time point of the measured water meter, calculating the time interval between two pulses of the measured water meter according to a second preset formula, wherein the second preset formula is as follows: Δ Tc = (Tc)N-Tc1) /(N-1), wherein Δ Tc is characterized by the time interval between two pulses of the measured water, TcNCharacterised by the nth pulse time point, Tc, of the water meter being measured1Characterizing a first pulse time point of the measured water meter;
according to the time interval between two pulses of the standard water meter and the time interval between two pulses of the measured water meter, calculating the error of the measured water meter under the corresponding water condition according to a third preset formula, wherein the third preset formula is as follows: err = (Δ Tb-Tc)/Δ Tb, where Δ Tb is the time interval between two pulses of a standard water meter, Δ Tc is the time interval between two pulses of a measured water meter, and err is the error of the measured water meter.
The error of the measured water meter is calculated by recording a plurality of pulse time points in the same time period and taking the average value of the time intervals between two pulses, so that the measurement accuracy, the accuracy and the prediction accuracy are improved.
According to the embodiment of the invention, the method further comprises the following steps:
establishing an error threshold set corresponding to the standard water meter;
the error threshold set comprises error thresholds of the standard water meters under various standard water conditions;
comparing the threshold value according to the error of the measured water meter under the water condition obtained by acquisition and calculation and the error threshold value under the water condition corresponding to the error threshold value set;
if the error of the measured water meter is not within the corresponding error threshold value range, marking the error of the measured water meter;
screening out the errors of the marked measured water meters, and reserving the errors of the unmarked measured water meters as effective errors;
and calibrating the measured water meter according to the effective error.
It should be noted that, in order to ensure the accuracy of the error obtained by the measured water meter and eliminate the error of the misalignment error to the error calibration, an error threshold set is established according to the standard water meter, including the error threshold of the standard water meter under each standard water condition, the measured water meter error under the water condition obtained by the acquisition and calculation is compared with the error threshold set under the corresponding water condition according to the error threshold set, if the measured water meter error is not within the corresponding error threshold range, the measured water meter error is marked and screened out, and only the unmarked measured water meter error is reserved as the accurate error to calibrate the measured water meter.
According to the embodiment of the invention, the method further comprises the following steps:
obtaining an error set according to the measured water meter error obtained by calculating the acquired pulses under different water conditions;
carrying out scattering inspection processing according to the error set to obtain error centrifugation of each error in the error set;
correcting the error set according to the error centrifugation degree of each error to obtain a corrected error of the measured water meter;
and calibrating the measured water meter according to the correction error.
It should be noted that, an error synthesis error set of the measured water meter is obtained by calculating pulses acquired for multiple times under different water conditions, and an error centrifugation degree of each error in the error set is obtained by processing the error synthesis error set through a dispersion inspection method according to the error set, and the specific method is as follows:
wherein the content of the first and second substances,
is the error eccentricity under the nth water condition,
for the error in the nth water condition,
is the average of n errors in the error set,
the measured characteristic value under the nth water condition is obtained, and n is the number of error concentration water conditions;
the correction error of the measured water meter obtained by correcting the error centrifugation degree according to the errors under different water conditions is specifically as follows:
wherein, T is the correction error,
the error centrifugation degree under the nth water condition, and n is the number of error concentration water conditions.
According to the embodiment of the invention, the method further comprises the following steps:
obtaining the response result of the standard water meter according to the error obtained by measuring the measured water meter under different water conditions by the plurality of standard water meters;
comparing intervals according to the response results of the plurality of standard water meters;
screening the standard water meter with the highest precision as a first standard water meter according to the comparison result;
and calibrating the measured water meter according to the error of the first standard water meter as the standard error of the measured water meter.
It should be noted that, because the standard water meters also have error influences such as systematic errors, random errors, environmental errors and the like, different standard water meters also have deviation on the measurement results of the measured water meters, in order to obtain the most accurate measurement, the standard water meter with the highest accuracy in the measurement process must be selected as a target to obtain the accurate measurement error of the measured water meter, response results of a plurality of standard water meters on the errors of the measured water meter under different water conditions are obtained, and comparison is performed in a measurement interval according to the response results of the plurality of standard water meters, the standard water meter which is closest to the median of the measurement interval in the plurality of standard water meters is taken as the first standard water meter, the error is taken as the standard error of the measured water meter, wherein the measurement interval is a random interval obtained by the system according to the measurement environment of the measured water meter, and the median of the interval is a random median generated according to the measurement environment system, the response result of the measurement error of the standard water meter is as follows:
wherein, B is the result of the response,
is a characteristic value of a standard water meter,
for the measurement error of the standard water meter at the nth water condition,
the response threshold value of the standard water meter system is preset, and n is n water conditions of the standard water meter measurement error.
Fig. 2 is a flow chart of a water meter calibration method based on a pulse method according to an embodiment of the present invention, and as shown in fig. 2, the water meter calibration method based on the pulse method includes the following steps:
s202, connecting a standard water meter and a measured water meter in series to a water meter detection device;
s204, enabling the standard water meter and the measured water meter to pass water with fixed flow rate, water pressure and water temperature;
s206, collecting and recording pulses of the standard water meter and the measured water meter;
s208, calculating an error;
concretely, Δ Tb = (Tb)N-Tb1) /(N-1), where Δ Tb is the time interval between two pulses of a standard water meter, TbNCharacterised by the Nth pulse time, Tb, of the standard water meter1Characterizing a first pulse time point of a standard water meter; Δ Tc = (Tc)N-Tc1) /(N-1), wherein, the Tc is the time interval between two pulses of the measured water, TcNCharacterised by the nth pulse time point, Tc, of the water meter being measured1Characterizing a first pulse time point of the measured water meter; err = (Δ Tb-Tc)/Δ Tb, where Δ Tb is the time interval between two pulses of a standard water meter, Tc is the time interval between two pulses of a measured water meter, err is the error of the measured water meter,
executing S210 while executing S208, and changing the flow rate, the water pressure and the water temperature of the water;
after executing S210, S204 is executed;
after the execution of S208, S212 is executed to calibrate the error.
Fig. 3 is a view showing an arrangement of a water meter calibration apparatus based on the pulse method according to an embodiment of the present invention, and as shown in fig. 3, a water meter calibration apparatus 300 based on the pulse method includes: a determining unit 302 for determining that the standard water meter and the measured water meter have been connected in series on the water meter detecting device; the control unit 304 is used for controlling water of different water conditions to be sequentially introduced into the standard water meter and the measured water meter, wherein the water condition parameters comprise flow rate, water pressure and water temperature; the acquisition and recording unit 306 is used for acquiring pulses of the standard water meter and the measured water meter in the same time period and recording each pulse time point; the calculating unit 308 is configured to calculate a measured water meter error under a corresponding water condition according to the pulse acquired under the same water condition; and the calibration unit 310 is configured to calibrate the measured water meter correspondingly according to the error data of the measured water meter.
In this embodiment, the standard water meter and the measured water meter are connected in series to the water meter detection device, and water under different water conditions is controlled to be introduced into the standard water meter and the measured water meter, so that errors of the standard water meter and the measured water meter can be respectively measured under the conditions of different flow rates, different water temperatures, different water pressures and the like. The measured water quantity value is subdivided into pulses, and then the pulse output condition of the measured meter under the same water condition is compared with the pulse output condition of the standard meter to calculate errors, so that the measuring efficiency and the measuring precision are greatly improved. Through according to the measurand water gauge error data under the different water conditions, correspond the calibration measurand water gauge, fully synthesized the error under the condition of different velocity of flow, different temperature and different water pressure for the calibration of measurand water gauge is more accurate, and the measurand water gauge after the calibration is under the condition of different velocity of flow, different temperature and different water pressure, and the accuracy is higher. And the error measurement time of the measured water meter is short, the measurement efficiency is high, and the resource consumption is low.
FIG. 4 shows a schematic block diagram of an electronic device 400 that may be used to implement embodiments of the present disclosure. As shown in fig. 4, device 400 includes a Central Processing Unit (CPU) 401 that may perform various appropriate actions and processes in accordance with computer program instructions stored in a Read Only Memory (ROM) 402 or loaded from a storage unit 408 into a Random Access Memory (RAM) 403. In the RAM403, various programs and data necessary for the operation of the device 400 can also be stored. The CPU 401, ROM 402, and RAM403 are connected to each other via a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
A number of components in device 400 are connected to I/O interface 405, including: an input unit 406 such as a keyboard, a mouse, or the like; an output unit 407 such as various types of displays, speakers, and the like; a storage unit 408 such as a magnetic disk, optical disk, or the like; and a communication unit 409 such as a network card, modem, wireless communication transceiver, etc. The communication unit 409 allows the device 400 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processing unit 401 executes the various methods and processes described above. For example, in some embodiments, the method may be implemented as a computer software program tangibly embodied in a machine-readable medium, such as storage unit 408. In some embodiments, part or all of the computer program may be loaded and/or installed onto the device 400 via the ROM 402 and/or the communication unit 409. When the computer program is loaded into RAM403 and executed by CPU 401, one or more steps of the method described above may be performed. Alternatively, in other embodiments, the CPU 401 may be configured to perform the method by any other suitable means (e.g., by way of firmware).
The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a load programmable logic device (CPLD), and the like.
Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (10)
1. A water meter calibration method based on a pulse method is characterized by comprising the following steps:
determining that the standard water meter and the measured water meter are connected in series on the water meter detection equipment;
controlling water of different water conditions to be sequentially introduced into the standard water meter and the measured water meter, wherein the water condition parameters comprise flow rate, water pressure and water temperature;
collecting pulses of the standard water meter and the measured water meter in the same time period, and recording each pulse time point;
calculating the error of the measured water meter under the corresponding water condition according to the pulse acquired under the same water condition;
and correspondingly calibrating the measured water meter according to the error data of the measured water meter.
2. A water meter calibration method based on a pulse method as set forth in claim 1, wherein said controlling of the sequential introduction of water of different water conditions into said standard water meter and said measured water meter comprises the steps of:
pre-storing water condition parameters of different water conditions, wherein the water condition parameters comprise flow rate, water pressure and water temperature;
and sequentially calling water condition parameters according to a preset period, and introducing water to the standard water meter and the measured water meter according to the called water condition parameters.
3. A method of calibrating a water meter based on a pulse method as claimed in claim 2, further comprising:
and pre-storing a corresponding relation data table of the preset period and the water condition parameters.
4. A water meter calibration method based on a pulse method according to claim 1, wherein said collecting pulses of said standard water meter and said measured water meter in the same time period and recording each pulse time point specifically comprises:
starting timing when water starts to flow according to each water condition parameter;
simultaneously collecting pulses sequentially sent by the standard water meter and the measured water meter, and recording each pulse time point;
and when the number of the collected pulses sent by the standard water meter and the measured water meter reaches the designated number, resetting the timing.
5. A water meter calibration method based on a pulse method as set forth in claim 4, wherein said controlling of the sequential introduction of water of different water conditions into said standard water meter and said measured water meter comprises the steps of:
pre-storing water condition parameters of different water conditions, wherein the water condition parameters comprise flow rate, water pressure and water temperature;
sequentially calling water condition parameters, and controlling to call the next water condition parameter when the number of pulses sent by the standard water meter and the measured water meter which are collected under the water condition reaches a specified number;
and water is led to the standard water meter and the measured water meter according to the called water condition parameters.
6. A water meter calibration method based on a pulse method according to claim 5,
the water condition calling parameter is correspondingly provided with a plurality of standard water conditions according to the specification of the measured water meter;
the plurality of standard water conditions comprises a plurality of sets of water condition parameters;
sequentially supplying water to the standard water meter and the measured water meter according to the multiple groups of water condition parameters;
and when the water condition parameters acquired by the standard water meter and the measured water meter are the same, starting pulse acquisition.
7. A method of calibrating a water meter based on a pulse method according to claim 1, wherein the step of calculating the error of the measured water meter under the corresponding water condition based on the pulses collected under the same water condition comprises the steps of:
acquiring a first pulse time point and an Nth pulse time point of the standard water meter and the measured water meter which are acquired under the same water condition, wherein N is equal to the total number of pulses acquired under the corresponding water condition;
calculating the time interval between two pulses of the standard water meter according to the Nth pulse time point and the first pulse time point of the standard water meter and a first preset formulaThe first preset formula is as follows: Δ Tb = (Tb)N-Tb1) /(N-1), where Δ Tb is the time interval between two pulses of a standard water meter, TbNCharacterised by the Nth pulse time, Tb, of the standard water meter1Characterizing a first pulse time point of a standard water meter;
according to the Nth pulse time point and the first pulse time point of the measured water meter, calculating the time interval between two pulses of the measured water meter according to a second preset formula, wherein the second preset formula is as follows: Δ Tc = (Tc)N-Tc1) /(N-1), wherein Δ Tc is characterized by the time interval between two pulses of the measured water, TcNCharacterised by the nth pulse time point, Tc, of the water meter being measured1Characterizing a first pulse time point of the measured water meter;
according to the time interval between two pulses of the standard water meter and the time interval between two pulses of the measured water meter, calculating the error of the measured water meter under the corresponding water condition according to a third preset formula, wherein the third preset formula is as follows: err = (Δ Tb-Tc)/Δ Tb, where Δ Tb is the time interval between two pulses of a standard water meter, Δ Tc is the time interval between two pulses of a measured water meter, and err is the error of the measured water meter.
8. A water meter calibrating device based on a pulse method is characterized by comprising:
the determining unit is used for determining that the standard water meter and the measured water meter are connected on the water meter detection equipment in series;
the control unit is used for controlling water of different water conditions to be sequentially introduced into the standard water meter and the measured water meter, wherein the water condition parameters comprise flow rate, water pressure and water temperature;
the acquisition and recording unit is used for acquiring pulses of the standard water meter and the measured water meter in the same time period and recording each pulse time point;
the calculation unit is used for calculating the error of the measured water meter under the corresponding water condition according to the pulse acquired under the same water condition;
and the calibration unit is used for correspondingly calibrating the measured water meter according to the error data of the measured water meter.
9. An apparatus, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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| CN202210286361.1A CN114608678A (en) | 2022-03-23 | 2022-03-23 | Water meter calibration method and device based on pulse method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468634A (en) * | 2022-11-02 | 2022-12-13 | 江苏水科尚禹能源技术研究院有限公司 | Turbine flowmeter calibration detection method and device |
| CN115932711A (en) * | 2023-03-10 | 2023-04-07 | 杭州炬华科技股份有限公司 | Data processing method, device and medium for electric energy meter measurement reliability |
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- 2022-03-23 CN CN202210286361.1A patent/CN114608678A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468634A (en) * | 2022-11-02 | 2022-12-13 | 江苏水科尚禹能源技术研究院有限公司 | Turbine flowmeter calibration detection method and device |
| CN115932711A (en) * | 2023-03-10 | 2023-04-07 | 杭州炬华科技股份有限公司 | Data processing method, device and medium for electric energy meter measurement reliability |
| CN115932711B (en) * | 2023-03-10 | 2023-07-07 | 杭州炬华科技股份有限公司 | Data processing method, device and medium for metering reliability of electric energy meter |
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