WO2020258284A1

WO2020258284A1 - Flowmeter calibration system, method and apparatus, and storage medium

Info

Publication number: WO2020258284A1
Application number: PCT/CN2019/093833
Authority: WO
Inventors: 常子敬; 潘国秀; 黄稀荻
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-12-30
Also published as: CN111344542A

Abstract

A flowmeter calibration system (100), comprising a measurement apparatus (104) for being connected in series to and communicating with at least two flowmeters and acquiring actual flows flowing through the at least two flowmeters; and a control apparatus (106) for being in communication connection with the measurement apparatus (104) and the at least two flowmeters, wherein the control apparatus (106) sends a calibration instruction to the at least two flowmeters according to the actual flows fed back by the measurement apparatus (104) and measured flows fed back by the at least two flowmeters. Sending a calibration instruction to at least two flowmeters according to the actual flows fed back by the measurement apparatus (104) and the measured flows fed back by the at least two flowmeters realizes simultaneous calibration for a plurality of flowmeters, and improves the flowmeter calibration efficiency. Further provided are a flowmeter calibration method and a computer-readable storage medium.

Description

Flowmeter calibration system, method, device and storage medium

Technical field

This application relates to the technical field of flow calibration, and specifically to a flow meter calibration system, a flow meter calibration method, a flow meter calibration device, and a computer-readable storage medium.

Background technique

When electronic flowmeters are manufactured, due to individual differences in components, the electronic flowmeters produced need to be calibrated.

In the related technical solutions, the electronic flowmeter is calibrated in a way of one-by-one calibration. The above-mentioned calibration method has slow calibration speed and low efficiency, and cannot meet the current calibration requirements.

Application content

This application aims to solve at least one of the technical problems existing in the prior art or related technologies.

To this end, the first aspect of the present application is to provide a flow meter calibration system.

The second aspect of the present application is to provide a flow meter calibration system.

The third aspect of this application is to provide a flow meter calibration method.

The fourth aspect of the present application is to provide a flow meter calibration device.

The fifth aspect of the present application is to provide a computer-readable storage medium.

In view of this, according to the first aspect of the present application, the present application provides a flow meter calibration system for calibrating at least two flow meters at the same time, including: a detection device for connecting with at least two flow meters in series, And obtain the actual flow through at least two flow meters; the control device is used for communicating with the detection device and the at least two flow meters, and the control device according to the actual flow feedback from the detection device and the measured flow feedback from the at least two flow meters, Send calibration instructions to at least two flow meters.

The flowmeter calibration system proposed in this application includes a detection device, a control device, and at least two flowmeters. The detection device is connected in series with at least two flowmeters for simultaneous measurement of the actual flow rates of multiple flowmeters. After obtaining the measured flow rate fed back by multiple flow meters, according to the actual flow rate fed back by the detection device and the measured flow rate fed back by the at least two flow meters, a calibration instruction is sent to at least two flow meters to realize simultaneous calibration of multiple flow meters . Compared with related technical solutions, the calibration efficiency of the flowmeter is improved.

Optionally, at least two flow meters are connected in series, and the detection device can measure the at least two flow meters by performing one measurement on any one of the at least two flow meters.

In addition, the flowmeter calibration system in the above technical solution provided by this application may also have the following additional technical features:

In the above technical solution, further, the flow meter calibration system further includes: a flow control device arranged on the pipeline connecting at least two flow meters and the detection device; the flow control device is connected to the control device, and the control device is also used for Control the operation of the flow control device.

In this technical solution, the flow meter calibration system further includes a flow control device for controlling the flow through at least two flow meters. Under the control of the control device, the operation of the flow control device is controlled so as to realize the calibration of the at least two flow meters. The control of the amount of liquid required during measurement avoids the waste caused by excessive use of liquid in the process of flowmeter calibration.

Optionally, the flow control device is also used to control the flow rate through the flow meter, so as to control the flow meter to be calibrated at a specified flow rate, so as to reduce the influence of the change or inconsistency of the measured process flow rate on the calibration result.

In any of the above technical solutions, further, the flow control device includes a pump body or a throttle valve, and the control device is also used to: receive a flow adjustment instruction; adjust the speed of the pump body according to the flow adjustment instruction; or adjust the throttle according to the flow adjustment instruction The opening of the flow valve.

In this technical solution, the flow control device includes an active pump body or a passive throttle valve. Specifically, after receiving a flow adjustment command, the speed of the pump body is adjusted according to the flow adjustment command to realize the control of the flow rate and flow rate. Control; or after receiving the flow adjustment instruction, adjust the opening of the throttle valve according to the flow adjustment instruction to realize the control of the flow rate and flow, thereby improving the credibility of the calibration result.

In any of the above technical solutions, further, the control device is specifically configured to: determine the calibration parameters of the at least two flow meters according to the actual flow rate at different flow rates and the measured flow rates fed back by the at least two flow meters at different flow rates; The parameters generate calibration instructions.

In this technical solution, the calibration parameters of at least two flow meters are determined by measuring the actual flow rates at different flow rates and the measured flow rates fed back by at least two flow meters at different flow rates, so as to achieve the calibration of the same flow meter at different flow rates. To improve the credibility of the calibrated flowmeter.

Among them, the calibration instruction is an instruction that includes calibration parameters, and may also be an instruction that includes correction results of the calibration parameters.

In any of the above technical solutions, further, any one of the at least two flow meters includes: a communication module for communicating with the control device, and the communication module has an identity code.

In this technical solution, a communication module is provided in any one of the at least two flow meters, so that the detection device sends the actual flow to the corresponding flow meter for calibration according to the identification code, thereby realizing the adjustment of multiple flow meters. calibration.

In any of the above technical solutions, further, the communication module communicates with the control device through a controller area network.

In this technical solution, the communication module communicates with the control device through the controller area network to realize the calibration of multiple flow meters, so as to improve the calibration efficiency of the flow meters.

In any of the above technical solutions, further, any one of the at least two flow meters further includes: a memory for storing calibration parameters.

In this technical solution, the flowmeter is also provided with a memory to store the calibration parameters, so that after the calibration parameters are determined, the flowmeter performs self-calibration according to the stored calibration parameters. The self-calibration process can be performed on the flowmeter. During the initialization process.

In any of the above technical solutions, further, the flow meter calibration system further includes: a liquid source for inputting liquid to at least two flow meters; and the detection device is arranged on the pipeline connecting the at least two flow meters and the liquid source.

In this technical solution, by arranging the liquid source, at least two flow meters, and the detection device on the same pipeline, the actual flow rate flowing through the at least two flow meters is measured, specifically, one observation is performed on the detection device. The measurement of the actual flow rate of at least two flow meters can be realized without the need to separately measure each flow meter, which reduces the number of measurements and improves the efficiency of calibration.

Optionally, the detection device is a calibrated flow meter.

In any of the above technical solutions, further, the flow meter calibration system further includes: a liquid source for inputting liquid to at least two flow meters; the liquid source is a liquid storage device, and the detection device is arranged on the liquid storage device for Measure the liquid mass change value in the liquid storage device to obtain the actual flow rate.

In this technical solution, when the liquid source used to input liquid to the at least two flow meters is a liquid storage device, the detection device is arranged on the liquid storage device, and the liquid storage device determines the amount of liquid flowing through at least two The actual flow rate of a flow meter.

Optionally, the actual flow through at least two flow meters is determined according to the volume change of the liquid in the liquid storage device. Specifically, when the liquid storage device is a container with a regular shape, the flow through is determined according to the change in liquid level. The actual flow of at least two flow meters, where the liquid storage device is a cylindrical container.

Optionally, it is also possible to determine the amount of change in the height of the liquid according to the change in the pressure value detected by the pressure sensor provided in the liquid, and then to determine the actual flow through the at least two flow meters.

Optionally, the actual flow rate is obtained according to the liquid mass change value in the liquid storage device, and further, the liquid mass change value is characterized by detecting the mass change value of the liquid storage device, thereby determining the actual flow rate flowing through at least two flow meters .

According to the second aspect of the present application, the present application provides a flow meter calibration system for calibrating at least two flow meters at the same time, including: a detection device for connecting with at least two flow meters in series and obtaining flow The actual flow rates of at least two flow meters; the at least two flow meters are in communication connection with the detection device, and are used to receive the actual flow rates flowing through the at least two flow meters, and determine the calibration parameters according to the actual flow rates flowing through the at least two flow meters.

The flow meter calibration system proposed in this application includes a detection device and at least two flow meters, wherein the detection device is connected in series with at least two flow meters, and is used to measure the actual flow rates of multiple flow meters at the same time, so as to obtain more information. After measuring the flow rate fed back by a flow meter, according to the actual flow rate fed back by the detection device and the measured flow rate fed back by the at least two flow meters, a calibration instruction is sent to at least two flow meters, thereby realizing simultaneous calibration of multiple flow meters. Compared with related technical solutions, the calibration efficiency of the flowmeter is improved.

In the above technical solution, further, the flow meter calibration system further includes: a flow control device arranged on the pipeline connecting at least two flow meters and the detection device; the flow control device is connected to the detection device, and the detection device is also used for Control the operation of the flow control device.

In this technical solution, the flow meter calibration system further includes a flow control device for controlling the flow through the at least two flow meters. By controlling the operation of the flow control device, the amount of liquid required for the measurement of the at least two flow meters is achieved. The control to avoid waste caused by excessive use of liquid in the process of flow meter calibration.

In any of the above technical solutions, further, the flow control device includes a pump body or a throttle valve, and the detection device is also used to: receive a flow adjustment command; adjust the speed of the pump body according to the flow adjustment command; or adjust the throttle according to the flow adjustment command The opening of the flow valve.

In any of the above technical solutions, further, any one of the at least two flow meters is specifically used to determine the calibration parameters according to the actual flow rates at different flow rates and the measured flow rates of the at least two flow meters.

In any of the above technical solutions, further, any one of the at least two flow meters includes: a communication module for communicating with the detection device, and the communication module has an identity code.

In any of the above technical solutions, further, the communication module communicates with the detection device through a controller area network.

In this technical solution, the communication module communicates with the detection device through the controller area network to realize the calibration of multiple flow meters, so as to improve the calibration efficiency of the flow meters.

Optionally, the detection device is a calibrated flow meter.

According to the third aspect of the present application, the present application provides a flow meter calibration method for calibrating at least two flow meters at the same time. The flow meter calibration method includes: according to the actual flow through the at least two flow meters and the at least two flow meters. The measured flow rate fed back by one flow meter generates a calibration instruction; wherein at least two flow meters are connected in series; the calibration instruction is sent to the corresponding flow meter of the at least two flow meters.

The flow meter calibration method provided in this application measures the actual flow rates of multiple flow meters at the same time, so that after obtaining the measured flow rates fed back by multiple flow meters, it is based on the actual flow rates fed back by the detection device and the feedback of at least two flow meters. To measure the flow rate, send calibration instructions to at least two flow meters, thereby realizing simultaneous calibration of multiple flow meters. Compared with related technical solutions, the calibration efficiency of the flowmeter is improved.

Optionally, at least two flow meters are connected in series, and the measurement of the at least two flow meters can be achieved by performing a measurement on any one of the at least two flow meters.

In addition, the flowmeter calibration method in the above technical solution provided by this application may also have the following additional technical features:

In the above technical solution, further, the step of generating a calibration instruction according to the actual flow through the at least two flow meters and the measured flow rates fed back by the at least two flow meters specifically includes: controlling the flow control device to start with the nth working parameter Run, control the flow control device to stop running after the preset time; acquire the nth actual flow rate fed back by the detection device after the flow control device ends; feedback the nth actual flow rate and the nth measured flow rate from any one of at least two flow meters The difference value of is used as the nth correction parameter; the correction parameter of any one of the at least two flowmeters is determined according to the plurality of nth correction parameters, and a calibration instruction is generated; n is a positive integer greater than or equal to 2.

In this technical solution, by controlling the flow control device to work according to different working parameters, multiple sets of actual flow and measured flow in different states are obtained, so as to determine the corresponding calibration according to one set of actual flow and corresponding measured flow. Parameter, and then realize the calibration of the flowmeter.

Optionally, a calibration parameter is determined according to multiple sets of actual flow and measured flow to improve the reliability of the calibration parameter.

In any of the above technical solutions, further, the step of sending the calibration instruction to the corresponding flowmeters of the at least two flowmeters specifically includes: sending the calibration instruction to the corresponding flowmeter of the at least two flowmeters according to the identities of the at least two flowmeters. At least two flow meters.

In any of the above technical solutions, further, the flow meter calibration method further includes: automatically acquiring the actual flow through the at least two flow meters and the measured flow feedback from the at least two flow meters.

In this technical solution, by actively acquiring the actual flow through at least two flow meters and the measured flow rates fed back by the at least two flow meters, the active calibration of the at least two flow meters is realized, thereby improving the efficiency of flow meter calibration.

According to the fourth aspect of the present application, the present application provides a flow meter calibration device, including: a controller; a memory for storing a computer program; the controller executes the computer program stored in the memory to realize: The actual flow rates of the two flow meters and the measured flow rates fed back by the at least two flow meters are used to generate calibration instructions; wherein at least two flow meters are connected in series; and the calibration instructions are sent to the corresponding flow meters of the at least two flow meters.

The present application provides a flow meter calibration device, in which the controller executes a computer program stored in a memory to realize: measure the actual flow rates of multiple flow meters at the same time, so as to obtain the measured flow rate feedback from multiple flow meters. Then, according to the actual flow rate fed back by the detection device and the measured flow rate fed back by the at least two flow meters, a calibration instruction is sent to the at least two flow meters, thereby realizing simultaneous calibration of multiple flow meters. Compared with related technical solutions, the calibration efficiency of the flowmeter is improved.

In addition, the flowmeter calibration device in the above technical solution provided by this application may also have the following additional technical features:

In the above technical solution, further, the controller executes the computer program stored in the memory to realize: control the flow control device to start running with the nth working parameter, control the flow control device to stop running after a preset time; obtain the flow control device in the flow The nth actual flow rate fed back after the control device finishes running; the difference between the nth actual flow rate and the nth measured flow rate fed back by any one of the at least two flowmeters is used as the nth correction parameter; at least Calibration parameters of any one of the two flow meters, and generate calibration instructions; n is a positive integer greater than or equal to 2.

In any one of the above technical solutions, further, the controller executes a computer program stored in the memory to realize: according to the identities of the at least two flow meters, send a calibration instruction to the at least two flow meters corresponding to the identities.

In any of the above technical solutions, further, the controller executes a computer program stored in the memory to realize: automatically acquiring the actual flow rate flowing through the at least two flow meters and the measured flow rate fed back by the at least two flow meters.

According to the fifth aspect of the present application, the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for calibrating a flow meter as described in any of the above step.

In this technical solution, when the computer program is executed by the processor, the steps of the flowmeter calibration method as described in any one of the above are realized, so it has all the beneficial technical effects of the flowmeter calibration method, and will not be repeated here.

The additional aspects and advantages of the present application will be partially given in the following description, and some will become obvious from the following description, or be understood through the practice of the present application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Fig. 1 shows a schematic block diagram of a flow meter calibration system according to an embodiment of the present application;

Fig. 2 shows a schematic block diagram of a flow meter calibration system according to another embodiment of the present application;

Fig. 3 shows a schematic block diagram of a flow meter calibration system according to another embodiment of the present application;

Fig. 4 shows a schematic block diagram of a flow meter calibration system according to another embodiment of the present application;

Fig. 5 shows a schematic block diagram of a flow meter calibration system according to another embodiment of the present application;

Fig. 6 shows a schematic flowchart of a flow meter calibration method according to an embodiment of the present application;

FIG. 7 shows a schematic flow chart of generating a calibration instruction according to the actual flow through at least two flow meters and the measured flow rates fed back by the at least two flow meters according to an embodiment of the present application;

Fig. 8 shows a schematic block diagram of a flow meter calibration device according to an embodiment of the present application.

Among them, the corresponding relationship between the reference signs and component names in Figure 3 is:

302 first water tank, 304 multiple flow meters to be calibrated, 306 upper computer, 308 water pump, 310 second water tank, 312 weight measuring device, 314CAN ID converter, 316 water pump control board.

Detailed ways

In order to be able to understand the above-mentioned aspects, features and advantages of the application more clearly, the application will be further described in detail below in conjunction with the accompanying drawings and specific implementations. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are set forth in order to fully understand this application. However, this application can also be implemented in other ways different from those described here. Therefore, the scope of protection of this application is not covered by the specific details disclosed below. Limitations of the embodiment.

Example one

In an embodiment of the present application, as shown in FIG. 1, the flow meter calibration system 100 is used to calibrate at least two flow meters at the same time, and includes: a detection device 104, which is used to connect with at least two flow meters in series and obtain the flow The actual flow rate of at least two flow meters; the control device 106 is used to communicate with the detection device 104 and the at least two flow meters. The control device 106 is based on the actual flow rate fed back by the detection device 104 and the measured flow rate fed back by the at least two flow meters, Send calibration instructions to at least two flow meters.

The flow meter calibration system 100 proposed in the present application includes a detection device 104, a control device 106, and at least two flow meters. The detection device 104 is connected in series with at least two flow meters for simultaneous measurement of the actual flow of multiple flow meters. After obtaining the measured flow rate fed back by multiple flow meters, according to the actual flow rate fed back by the detection device 104 and the measured flow rate fed back by the at least two flow meters, a calibration instruction is sent to at least two flow meters, so as to realize the Simultaneous calibration of the flowmeter. Compared with related embodiments, the calibration efficiency of the flow meter is improved.

Optionally, at least two flow meters are connected in series, and the detection device 104 can measure the at least two flow meters by performing one measurement on any one of the at least two flow meters.

In an embodiment of the present application, as shown in FIG. 2, the flow meter calibration system further includes: a flow control device 108, which is arranged on the pipeline connecting at least two flow meters and the detection device 104; the flow control device 108 and the control device 106 is connected, and the control device 106 is also used to control the operation of the flow control device 108.

In this embodiment, the flow meter calibration system further includes a flow control device 108 for controlling the flow through at least two flow meters. Under the control of the control device 106, the flow control device 108 is controlled to operate, so as to achieve the The control of the amount of liquid required for the measurement of a flowmeter can avoid the waste caused by excessive use of liquid during the calibration of the flowmeter.

Optionally, the flow control device 108 is also used to control the flow rate through the flow meter, so as to control the flow meter to be calibrated at a specified flow rate, so as to reduce the influence of the change or inconsistency of the measured process flow rate on the calibration result.

In an embodiment of the present application, the flow control device 108 includes a pump body or a throttle valve, and the control device 106 is also used to: receive a flow adjustment command; adjust the speed of the pump body according to the flow adjustment command; or adjust the throttle according to the flow adjustment command The opening of the valve.

In this embodiment, the flow control device 108 includes an active pump body or a passive throttle valve. Specifically, after receiving a flow adjustment command, the speed of the pump body is adjusted according to the flow adjustment command to realize the adjustment of the flow rate and flow rate. Or after receiving the flow adjustment instruction, adjust the opening of the throttle valve according to the flow adjustment instruction to realize the control of the flow rate and flow, thereby improving the credibility of the calibration result.

In an embodiment of the present application, the control device 106 is specifically configured to: determine the calibration parameters of at least two flow meters according to the actual flow at different flow rates and the measured flow rates fed back by the at least two flow meters at different flow rates; Calibration instructions.

In this embodiment, the calibration parameters of at least two flow meters are determined by measuring the actual flow at different flow rates and the measured flow rates fed back by at least two flow meters at different flow rates, so as to achieve the calibration of the same flow meter at different flow rates. To improve the credibility of the calibrated flowmeter.

In an embodiment of the present application, any one of the at least two flow meters includes: a communication module for communicating with the control device 106, and the communication module has an identity code.

In this embodiment, any one of the at least two flow meters is provided with a communication module, so that the detection device 104 sends the actual flow to the corresponding flow meter for calibration according to the identity code, so as to realize the calibration of the multiple flow meters. Calibration.

In an embodiment of the present application, the communication module communicates with the control device 106 through a controller area network.

In this embodiment, the communication module communicates with the control device 106 through the controller area network to realize the calibration of multiple flow meters, so as to improve the calibration efficiency of the flow meters.

In any of the above embodiments, further, any one of the at least two flow meters further includes: a memory for storing calibration parameters.

In this embodiment, the flowmeter is also provided with a memory to store the calibration parameters, so that after the determination of the calibration parameters is completed, the flowmeter performs self-calibration according to the stored calibration parameters. The self-calibration process can be performed on the flowmeter. During the initialization process.

In an embodiment of the present application, the flow meter calibration system 100 further includes: a liquid source for inputting liquid to at least two flow meters; and the detection device 104 is arranged on the pipeline connecting the at least two flow meters and the liquid source.

In this embodiment, by arranging the liquid source, at least two flow meters, and the detection device 104 on the same pipeline, the actual flow rate flowing through the at least two flow meters is measured, specifically, the detection device 104 One observation can realize the measurement of the actual flow rate of at least two flowmeters, and there is no need to measure each flowmeter separately, which reduces the number of measurements and improves the efficiency of calibration.

Optionally, the detection device 104 is a calibrated flow meter.

In an embodiment of the present application, the flow meter calibration system 100 further includes: a liquid source for inputting liquid to at least two flow meters; the liquid source is a liquid storage device, and the detection device 104 is arranged on the liquid storage device for measuring The change value of the liquid mass in the liquid storage device to obtain the actual flow rate.

In this embodiment, when the liquid source used to input the liquid to the at least two flow meters is a liquid storage device, the detection device 104 is arranged on the liquid storage device, and the flow through at least The actual flow of the two flow meters.

Example two

In an embodiment of the application, as shown in FIG. 3, the flow meter calibration system includes: a first water tank 302, a plurality of flow meters to be calibrated 304, a host computer 306, a water pump 308, a second water tank 310, and a weight measuring device 312 Specifically, the first water tank 302, the plurality of flow meters to be calibrated 304, the water pump 308, and the second water tank 310 are sequentially connected through a pipeline, and the upper computer 306 is respectively connected to the plurality of flow meters 304, the water pump 308 and the weight measuring device to be calibrated. 312 communication, wherein the upper computer 306 is connected to the multiple flow meters 304 to be calibrated through CAN (Controller Area Network, Controller Area Network), and the multiple flow meters 304 to be calibrated are provided with the upper computer 306 The CAN ID (Controller Area Network Identity, Controller Area Network Identity) converter 314 (communication module) for communication is used to determine the identity information of each flowmeter to be calibrated. Specifically, the upper computer 306 is controlled by the water pump The plate 316 controls the operation of the water pump 308. When calibrating a plurality of flow meters 304 to be calibrated, the water pump 308 is controlled to rotate to generate water flows of different flow rates. After a certain period of time, the water pump 308 is controlled to stop, and the weight measurement device 312 measures the first The weight change value of the second water tank 310 to determine the corresponding water volume. The upper computer 306 sends the water volume to each of the plurality of flow meters 304 to be calibrated, so that each of the plurality of flow meters 304 to be calibrated matches the calibration parameters To achieve calibration.

Table 1 shows the measured flow rate and weight measurement value of the flow meter 1 to be calibrated.

Table 1

Among them, the weight value fed back by the host computer through the weight measuring device is converted into a pair of volumes. For example, when using clean water, the conversion is performed according to the density of 1g/cm ³ .

Optionally, the host computer and the weight measuring device communicate via a wired method (via USB), or via a wireless communication method, or can be obtained by photographing and identifying via a camera, or manually input.

Optionally, the CAN ID converter can be a hardware forwarding device, or a different CAN ID can be set by software, or it can be performed by other bus technologies (RS485, smart meters, etc.) for time-division multiplexing bus communication with the host computer .

Table 2 shows the measured flow rate and weight measurement value of the flow meter 2 to be calibrated.

Table 2

Table 3 shows the measured flow rate and weight measurement value of the flow meter 3 to be calibrated.

table 3

Example three

In an embodiment of the present application, as shown in FIG. 4, a flow meter calibration system 200 is provided for calibrating at least two flow meters 202 at the same time, including: a detection device 204, which is used to communicate with at least two flow meters 202 Connected in series, and obtain the actual flow through at least two flow meters 202; at least two flow meters 202 are communicatively connected with the detection device 204 for receiving the actual flow through at least two flow meters 202, and according to the flow at least The actual flow rates of the two flow meters 202 determine the calibration parameters.

The flow meter calibration system 200 proposed in the present application includes a detection device 204 and at least two flow meters 202, wherein the detection device 204 is connected in series with the at least two flow meters 202 for simultaneously measuring the actual flow rates of multiple flow meters. So that after acquiring the measured flow rate fed back by multiple flow meters, according to the actual flow rate fed back by the detection device 204 and the measured flow rate fed back by the at least two flow meters 202, a calibration instruction is sent to the at least two flow meters 202, so as to realize the Simultaneous calibration of the flowmeter. Compared with related embodiments, the calibration efficiency of the flow meter is improved.

Optionally, at least two flow meters 202 are connected in series, and the detection device 204 can measure the at least two flow meters 202 by measuring any one of the at least two flow meters 202 once.

In an embodiment of the present application, as shown in FIG. 5, the flow meter calibration system 200 further includes: a flow control device 206, which is provided on the pipeline connecting at least two flow meters 202 and the detection device 204; the flow control device 206 and The detection device 204 is connected, and the detection device 204 is also used to control the operation of the flow control device 206.

In this embodiment, the flow meter calibration system 200 further includes a flow control device 206 for controlling the flow of at least two flow meters 202. By controlling the operation of the flow control device 206, the measurement of the at least two flow meters 202 can be achieved. The control of the amount of liquid required at the time to avoid waste caused by excessive use of liquid in the process of flowmeter calibration.

Optionally, the flow control device 206 is also used to control the flow rate through the flow meter, so as to control the flow meter to be calibrated at a specified flow rate, so as to reduce the influence of the change or inconsistency of the measured process flow rate on the calibration result.

In an embodiment of the present application, the flow control device 206 includes a pump body or a throttle valve, and the detection device 204 is also used to: receive a flow adjustment instruction; adjust the speed of the pump body according to the flow adjustment instruction; or adjust the throttle according to the flow adjustment instruction The opening of the valve.

In this embodiment, the flow control device 206 includes an active pump body or a passive throttle valve. Specifically, after receiving a flow adjustment command, the speed of the pump body is adjusted according to the flow adjustment command to realize the adjustment of the flow rate and flow rate. Or after receiving the flow adjustment instruction, adjust the opening of the throttle valve according to the flow adjustment instruction to realize the control of the flow rate and flow, thereby improving the credibility of the calibration result.

In an embodiment of the present application, any one of the at least two flow meters 202 is specifically used to determine the calibration parameters according to the actual flow rates at different flow rates and the measured flow rates of the at least two flow meters 202.

In this embodiment, the calibration parameters of the at least two flow meters 202 are determined by measuring the actual flow rates at different flow rates and the measured flow rates fed back by the at least two flow meters 202 at different flow rates, so as to achieve the same flow rate at different flow rates. Calibration to improve the credibility of the calibrated flowmeter.

In an embodiment of the present application, any one of the at least two flow meters 202 includes: a communication module for communicating with the detection device 204, and the communication module has an identity code.

In this embodiment, any one of the at least two flow meters 202 is provided with a communication module, so that the detection device 204 sends the actual flow to the corresponding flow meter for calibration according to the identity code, so as to realize the calibration of multiple flows. Meter calibration.

In an embodiment of the present application, the communication module communicates with the detection device 204 through a controller area network.

In this embodiment, the communication module communicates with the detection device 204 through the controller area network to realize the calibration of multiple flow meters, so as to improve the calibration efficiency of the flow meters.

In an embodiment of the present application, any one of the at least two flow meters 202 further includes: a memory for storing calibration parameters.

In an embodiment of the present application, the flow meter calibration system 200 further includes: a liquid source for inputting liquid to at least two flow meters 202; a detection device 204 is provided on the pipeline connecting the at least two flow meters 202 with the liquid source .

In this embodiment, by arranging the liquid source, at least two flow meters 202, and the detection device 204 on the same pipeline, the actual flow rate flowing through the at least two flow meters 202 is measured. Specifically, the detection device One observation at 204 can realize the measurement of the actual flow of at least two flow meters 202, and there is no need to separately measure each flow meter, which reduces the number of measurements and improves the efficiency of calibration.

Optionally, the detection device 204 is a calibrated flow meter.

In an embodiment of the present application, the flow meter calibration system 200 further includes: a liquid source for inputting liquid to at least two flow meters 202; the liquid source is a liquid storage device, and the detection device 204 is arranged on the liquid storage device for Measure the liquid mass change value in the liquid storage device to obtain the actual flow rate.

In this embodiment, when the liquid source used to input liquid to the at least two flow meters 202 is a liquid storage device, the detection device 204 is arranged on the liquid storage device, and the flow through is determined according to the amount of liquid change in the liquid storage device. The actual flow of at least two flow meters 202.

Optionally, the actual flow rate flowing through the at least two flow meters 202 is determined according to the volume change of the liquid in the liquid storage device. Specifically, when the liquid storage device is a container with a regular shape, the flow rate is determined according to the change of the liquid level. The actual flow through at least two flow meters 202, where the liquid storage device is a cylindrical container.

Optionally, it is also possible to determine the amount of change in the height of the liquid according to the change in the pressure value detected by the pressure sensor provided in the liquid, and then determine the actual flow rate flowing through the at least two flow meters 202.

Optionally, the actual flow rate is obtained according to the liquid mass change value in the liquid storage device, and further, the liquid mass change value is characterized by detecting the mass change value of the liquid storage device, so as to determine the actual flow through the at least two flow meters 202. flow.

Example four

In an embodiment of the present application, as shown in FIG. 6, the flow meter calibration method for calibrating at least two flow meters at the same time includes:

S602: Generate a calibration instruction according to the actual flow through the at least two flow meters and the measured flow rates fed back by the at least two flow meters; wherein the at least two flow meters are connected in series;

S604: Send a calibration instruction to a corresponding one of the at least two flow meters.

The flow meter calibration method provided in this application measures the actual flow rates of multiple flow meters at the same time, so that after obtaining the measured flow rates fed back by multiple flow meters, it is based on the actual flow rates fed back by the detection device and the feedback of at least two flow meters. To measure the flow rate, send calibration instructions to at least two flow meters, thereby realizing simultaneous calibration of multiple flow meters. Compared with related embodiments, the calibration efficiency of the flow meter is improved.

In an embodiment of the present application, as shown in FIG. 7, the step of generating a calibration instruction according to the actual flow through at least two flow meters and the measured flow rates fed back by the at least two flow meters specifically includes:

S702: Control the flow control device to start operating with the nth working parameter, and control the flow control device to stop operating after a preset time period;

S704: Obtain the nth actual flow rate fed back by the detection device after the flow control device ends operation;

S706: Use a difference between the nth actual flow rate and the nth measured flow rate fed back by any one of the at least two flow meters as the nth correction parameter;

S708: Determine the calibration parameter of any one of the at least two flow meters according to the plurality of nth calibration parameters, and generate a calibration instruction; n is a positive integer greater than or equal to 2.

In this embodiment, by controlling the flow control device to work according to different working parameters, multiple sets of actual flow and measured flow in different states are obtained, so that the corresponding calibration can be determined according to one set of actual flow and corresponding measured flow. Parameter, and then realize the calibration of the flowmeter.

In an embodiment of the present application, the step of sending a calibration instruction to the corresponding flow meters of the at least two flow meters specifically includes: sending the calibration instruction to the at least two corresponding identities according to the identities of the at least two flow meters. Flow meter.

In this embodiment, any one of the at least two flow meters is provided with a communication module, so that the detection device sends the actual flow to the corresponding flow meter for calibration according to the identity code, thereby realizing the adjustment of multiple flow meters. calibration.

In an embodiment of the present application, the flow meter calibration method further includes: automatically obtaining the actual flow passing through the at least two flow meters and the measured flow feedback from the at least two flow meters.

In this embodiment, by actively acquiring the actual flow through the at least two flow meters and the measured flow rates fed back by the at least two flow meters, the active calibration of the at least two flow meters is realized, thereby improving the efficiency of the flow meter calibration.

Example five

In an embodiment of the present application, as shown in FIG. 8, a flow meter calibration device 800 is provided, which includes: a controller 802; a memory 804 for storing computer programs; the controller 802 executes data stored in the memory 804 The computer program is implemented to generate calibration instructions according to the actual flow through at least two flow meters and the measured flow rates fed back by the at least two flow meters; wherein at least two flow meters are connected in series; and the calibration instructions are sent to at least two flow meters The corresponding flowmeter in the

The present application provides a flow meter calibration device 800, in which the controller 802 executes a computer program stored in the memory 804 to realize: measure the actual flow rates of multiple flow meters at the same time, so as to obtain feedback from multiple flow meters. After measuring the flow rate, according to the actual flow rate fed back by the detection device and the measured flow rate fed back by the at least two flow meters, a calibration instruction is sent to the at least two flow meters, thereby achieving simultaneous calibration of multiple flow meters. Compared with related embodiments, the calibration efficiency of the flow meter is improved.

In an embodiment of the present application, the controller 802 executes a computer program stored in the memory 804 to realize: control the flow control device to start running with the nth working parameter, and control the flow control device to stop running after a preset period of time; obtain the detection device The nth actual flow rate fed back after the flow control device ends operation; the difference between the nth actual flow rate and the nth measured flow rate fed back by any one of the at least two flow meters is used as the nth correction parameter; according to multiple nth correction parameters Determine the calibration parameters of any one of the at least two flow meters, and generate a calibration instruction; n is a positive integer greater than or equal to 2.

In an embodiment of the present application, the controller 802 executes a computer program stored in the memory 804 to implement: according to the identities of the at least two flow meters, send a calibration instruction to at least two flow meters corresponding to the identities.

In an embodiment of the present application, the controller 802 executes a computer program stored in the memory 804 to realize: automatically obtain the actual flow rate flowing through at least two flow meters and the measured flow rate fed back by the at least two flow meters.

Example Six

In an embodiment of the present application, a computer-readable storage medium is provided, and a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the flowmeter calibration method described in any of the above are implemented.

In this embodiment, when the computer program is executed by the processor, the steps of the flowmeter calibration method as described in any one of the above are implemented, so it has all the beneficial technical effects of the flowmeter calibration method, which will not be repeated here.

In the description of this application, the term "plurality" refers to two or more than two, unless clearly defined otherwise, the orientation or positional relationship indicated by the terms "upper" and "lower" are based on the drawings shown The orientation or positional relationship is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the application; The terms "connected", "installed", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or through an intermediate connection. The medium is indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the description of this application, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that specific features, structures, materials or characteristics described in conjunction with the embodiment or examples are included in this application In at least one embodiment or example. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

The above descriptions are only preferred embodiments of the application, and are not used to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A flow meter calibration system is used to calibrate at least two flow meters at the same time, wherein the flow meter calibration system includes:

A detection device, configured to connect in series with the at least two flow meters and obtain the actual flow through the at least two flow meters;

The control device is configured to communicate with the detection device and the at least two flowmeters, and the control device reports the actual flow rate fed back by the detection device and the measured flow rate fed back by the at least two flow meters to the At least two flow meters send calibration instructions.
The flow meter calibration system according to claim 1, wherein the flow meter calibration system further comprises:

A flow control device, arranged on the pipeline connecting the at least two flow meters and the detection device;

The flow control device is connected to the control device, and the control device is also used to control the operation of the flow control device.
The flow meter calibration system according to claim 2, wherein the flow control device comprises a pump body or a throttle valve, and the control device is further used for:

Receive flow adjustment instructions;

Adjust the rotation speed of the pump body according to the flow adjustment instruction; or

The opening degree of the throttle valve is adjusted according to the flow adjustment instruction.
The flow meter calibration system according to any one of claims 1 to 3, wherein the control device is specifically used for:

Determine the calibration parameters of the at least two flowmeters according to the actual flow rate at different flow rates and the measured flow rate fed back by the at least two flowmeters at different flow rates;

The calibration instruction is generated according to the calibration parameter.
The flow meter calibration system according to claim 4, wherein any one of the at least two flow meters comprises:

The communication module is used to communicate with the control device, and the communication module has an identity code.
The flow meter calibration system according to claim 5, wherein:

The communication module communicates with the control device through a controller area network.
The flow meter calibration system according to claim 4, wherein any one of the at least two flow meters further comprises:

The memory is used to store the calibration parameters.
The flow meter calibration system according to claim 4, wherein the flow meter calibration system further comprises: a liquid source for inputting liquid to the at least two flow meters;

The detection device is arranged on the pipeline connecting the at least two flow meters and the liquid source.
The flow meter calibration system according to claim 4, wherein the flow meter calibration system further comprises: a liquid source for inputting liquid to the at least two flow meters;

The liquid source is a liquid storage device, and the detection device is arranged on the liquid storage device, and is used to measure the change value of the liquid mass in the liquid storage device to obtain the actual flow rate.
A flow meter calibration system for calibrating at least two flow meters at the same time, which includes:

A detection device, configured to connect in series with the at least two flow meters and obtain the actual flow through the at least two flow meters;

The at least two flow meters are in communication connection with the detection device, and are used to receive the actual flow through the at least two flow meters, and determine the calibration parameters according to the actual flow through the at least two flow meters.
The flow meter calibration system of claim 10, wherein the flow meter calibration system further comprises:

A flow control device, arranged on the pipeline connecting the at least two flow meters and the detection device;

The flow control device is connected with the detection device, and the detection device is also used to control the operation of the flow control device.
The flow meter calibration system according to claim 10, wherein the flow control device comprises a pump body or a throttle valve, and the detection device is further used for:

Receive flow adjustment instructions;

Adjust the rotation speed of the pump body according to the flow adjustment instruction; or

The opening degree of the throttle valve is adjusted according to the flow adjustment instruction.
The flow meter calibration system according to any one of claims 10 to 12, wherein any one of the at least two flow meters is specifically used for:

The calibration parameters are determined according to the actual flow rate and the measured flow rate of the at least two flow meters at different flow rates.
The flow meter calibration system according to claim 13, wherein any one of the at least two flow meters comprises:

The communication module is used to communicate with the detection device, and the communication module has an identity code.
The flow meter calibration system according to claim 14, wherein the communication module communicates with the detection device through a controller area network.
The flow meter calibration system according to claim 13, wherein any one of the at least two flow meters further comprises:

The memory is used to store the calibration parameters.
The flow meter calibration system according to claim 13, wherein the flow meter calibration system further comprises: a liquid source for inputting liquid to the at least two flow meters;

The detection device is arranged on the pipeline connecting the at least two flow meters and the liquid source.
The flow meter calibration system according to claim 13, wherein the flow meter calibration system further comprises: a liquid source for inputting liquid to the at least two flow meters;

The liquid source is a liquid storage device, and the detection device is arranged on the liquid storage device, and is used to measure the change value of the liquid mass in the liquid storage device to obtain the actual flow rate.
A flow meter calibration method is used to calibrate at least two flow meters at the same time, wherein the flow meter calibration method includes:

Generating a calibration instruction according to the actual flow through the at least two flow meters and the measured flow feedback from the at least two flow meters; wherein the at least two flow meters are connected in series;

Send the calibration instruction to the corresponding flow meter of the at least two flow meters.
The flow meter calibration method according to claim 19, wherein the step of generating a calibration instruction according to the actual flow through the at least two flow meters and the measured flow rates fed back by the at least two flow meters specifically includes :

Control the flow control device to start operation with the nth working parameter, and control the flow control device to stop operation after a preset time period;

Acquiring the nth actual flow rate fed back by the detection device after the flow control device ends operation;

Taking the difference between the nth actual flow rate and the nth measured flow rate fed back by any one of the at least two flow meters as the nth correction parameter;

Determine the calibration parameter of any one of the at least two flow meters according to a plurality of nth calibration parameters, and generate the calibration instruction;

The n is a positive integer greater than or equal to 2.
The flowmeter calibration method according to claim 19, wherein the step of sending the calibration instruction to the corresponding flowmeter of the at least two flowmeters specifically comprises:

According to the identities of the at least two flow meters, sending the calibration instruction to the at least two flow meters corresponding to the identities.
The flow meter calibration method according to claim 19, wherein the flow meter calibration method further comprises:

The actual flow rate flowing through the at least two flow meters and the measured flow rate fed back by the at least two flow meters are automatically acquired.
A flow meter calibration device, which includes:

Controller

Memory, used to store computer programs;

The controller executes the computer program stored in the memory to implement the steps of the flow meter calibration method according to any one of claims 19 to 22.
A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the flow meter calibration method according to any one of claims 19 to 22 are realized.