Current meter verification system and method

Abstract

The invention relates to a current meter verification system and method. Comprising a computer, a controller, a high-speed industrial camera, a data module (an information receiving and transmitting module), a servo system (comprising a servo driver, a servo motor and an encoder), a timer, a position recognition device, a precise track, a gear and gear sleeve transmission structure, a moving trolley, a high-speed network switch, a touch screen (having functions of a display screen and an input terminal), a reversing device, matched devices and circuits. Wherein the servo system is in signal connection with the controller, the touch screen, the camera, the data module, the timer, the computer and the controller are all in signal connection with the network switch, and the controller is further in signal connection with the position recognition device and the reversing device.

Description

TECHNICAL FIELD

[0001] The patent relates to a flow velocity meter calibration system and method, and the application relates to the fields of industrial automation, metrological verification, hydrology, water environment, instruments and meters, marine environment, aerospace, energy production and industrial manufacturing. BACKGROUND

[0002] Application demand: In many fields such as water conservancy, water resources management, water environment monitoring, water conservancy construction and shipping, accurate measurement of water flow velocity is crucial. For example, in water environment monitoring, flow velocity information helps to understand the diffusion of pollutants and the self-purification capacity of water bodies; in the hydrological system, accurate flow velocity is of great significance to flood warning, water resources allocation and other work.

[0003] Flow velocity meter use problems: In actual application, due to factors such as high sediment content of rivers, instrument wear and tear, and long-term use, the parameters of the flow velocity meter will change. For example, the rotor of a rotor-type flow velocity meter may wear out after long-term use, causing the relationship between its rotation speed and the actual water flow velocity to change. To ensure the accuracy of flow velocity measurement, the flow velocity meter needs to be calibrated regularly.

[0004] Limitations of existing calibration systems and methods: Some traditional calibration systems and methods have shortcomings. For example, manual adjustment of instrument water entry depth and turning direction is prone to adjustment deviation, affecting the accuracy of test results, and is low in work efficiency and labor intensity; when the probes of the flow velocity meter to be tested and the normal flow velocity meter are placed in the same pipeline for data comparison, the water flow slows down when it hits the first flow velocity meter probe, resulting in errors in the second flow velocity meter detection data. SUMMARY

[0005] A flow velocity meter calibration system and method, characterized by comprising: a computer and a controller, a high-speed industrial camera, a data module (information transceiver module), a servo system (including a servo driver, a servo motor and an encoder), a timer, a position recognition device, a precision track, a gear and gear sleeve transmission structure, a motion trolley, a high-speed network switch, a touch screen (with a display screen and an input terminal function), a reversing device, and supporting components and circuits. The servo system is signal-connected with the controller, the touch screen, the camera, the data module, the timer, the computer and the controller are signal-connected with the network switch, and the controller is signal-connected with the position recognition device and the reversing device.

[0006] According to claim 1, a flow velocity meter calibration system and method, characterized in that when performing metrological verification, the servo system motion rotation speed and rotation number parameters are exchanged at high speed through digital communication, achieving good anti-interference performance and ensuring the timeliness, stability and reliability of metrological verification.

[0007] The flowmeter calibration system and method based on claim 1, characterized in that the servo system motor adopts million-level pulse control per revolution, and directly engages with the rack through the gear driven by the motor, so as to realize accurate control of speed and position when performing metrological detection.

[0008] The flowmeter calibration system and method based on claim 1, characterized in that the servo system motor adopts million-level pulse control per revolution, and directly engages with the rack through the gear driven by the motor, so as to realize accurate control of speed and position when performing metrological detection.

[0009] The flowmeter calibration system and method based on claim 1, characterized in that when performing metrological detection, the reading of the detected flowmeter is captured by a high-speed industrial camera (camera), and is transmitted to a computer through a high-speed network and an information transceiver module.

[0010] The flowmeter calibration system and method based on claim 1, characterized in that the position recognition device is installed on the moving trolley and the precision track, and when performing metrological detection, the controller obtains the position and speed signals from the servo system, and synchronously superimposes the accurate linear motion position of the trolley.

[0011] The flowmeter calibration system and method based on claim 1, characterized in that a high-precision intelligent timer is matched, and when performing metrological detection, the trolley enters the set detection area or the uniform speed running section, the running time is obtained from the controller, and the accurate timing of the timer is synchronously superimposed.

[0012] The flowmeter calibration system and method based on claim 1, characterized in that the servo system motion speed is converted into the linear motion speed of the trolley through the gear and rack engagement mode when performing metrological detection.

[0013] The flowmeter calibration system and method based on claim 1, characterized in that the servo system motion rotation circumference is converted into the linear motion position of the trolley through the gear and rack engagement mode when performing metrological detection.

[0014] The flowmeter calibration system and method based on claim 1, characterized in that a reversing device for the detected flowmeter is matched, and when performing metrological detection, the reversing device can be automatically or manually reversed to realize bidirectional detection of the detected flowmeter in the back-and-forth motion of the trolley.

[0015] The flowmeter calibration system and method based on claim 1, characterized in that when performing metrological detection, the servo system and the controller are installed on the moving trolley, and the weight of the trolley is borne by the precision track, so that the weight of the moving trolley does not need to be driven by the servo system.

[0016] The control method of the flow rate meter calibration system according to claim 1, characterized in that when the metrological verification is performed, the mode judgment and process switching are realized by the following steps: Step a0: user login, the calibration system identifies the user identity, and after successful identification, enters the metrological verification process; Step a1: detecting the metrological verification system mode switch, whether it is automatic, if so, then enter the automatic metrological verification step a2; otherwise, whether it is manual, if so, then enter the step b1 related to claim 3; otherwise, whether it is stopped, if so, then enter the step c1 related to claim 4; The control method of the flow rate meter calibration system according to claim 2, characterized in that when the automatic mode is performed, the following steps are realized: Step a2: detecting whether the current set detection speed is higher than the minimum limit value and lower than the maximum limit value, if so, then prompting the user that the metrological verification can be performed and proceeding to step a3; otherwise, prompting the user on the display screen that the speed setting is wrong and exiting the metrological verification process; Step a3: detecting whether the position signal of the position recognition device is at the starting position or the end position, if so, then proceeding to step a4, otherwise, repeating the execution of the present step; Step a4: detecting whether the metrological verification system start button is triggered, if so, then performing the metrological verification; at the same time, detecting whether the servo system fails, if so, then controlling the servo system to stop the metrological verification; otherwise, executing step a5; Step a5: detecting whether the metrological verification detection stop button or emergency stop button, the starting position or the end position, the stop condition is triggered, if so, then controlling the servo system to stop the metrological verification.

[0017] The control method of the flow rate meter calibration system according to claim 2, characterized in that when the manual mode is performed, the following steps are realized: Step b1: detecting the metrological verification system mode switch, whether it is manual, if so, then entering the manual metrological verification step b2; otherwise, whether it is automatic, if so, then entering the step a1 related to claim 2; otherwise, whether it is stopped, if so, then entering the step c1 related to claim 4; Step b2: detecting whether the metrological verification system forward button is continuously triggered, if so, then executing step b3; detecting whether the metrological verification system back button is continuously triggered, if so, then executing step b6; Step b3: detecting whether the position signal of the position recognition device is not at the end position, if so, then performing the manual metrological verification and entering step b4; otherwise, alarming and prompting the user on the display screen that the end position cannot be advanced, and exiting the metrological verification process; Step b4: detecting whether the servo system fails, if so, then controlling the servo system to stop the metrological verification; otherwise, executing step b5; Step b5: Check if the stop condition is triggered, such as the forward button being continuously pressed, the emergency stop button being pressed, or the position recognition reaching the end position. If so, control the servo system to stop the metrological verification.

[0018] Check if the stop condition is triggered, such as the stop button or emergency stop button being pressed, the start position or end position being reached, or the start position being unable to be returned to. If so, control the servo system to stop the manual metrological verification.

[0019] Step b6: Check if the position signal of the position recognition device is not at the start position. If so, proceed to step b7; otherwise, alarm and display a message on the screen prompting the user that the start position cannot be returned to, and exit the metrological verification process. Step b7: Check if the servo system has failed. If so, control the servo system to stop the metrological verification; otherwise, proceed to step b8. Step b8: Check if the stop condition is triggered, such as the back button being continuously pressed, the emergency stop button being pressed, or the position recognition reaching the start position. If so, control the servo system to stop the metrological verification.

[0020] The control method of the flowmeter verification system according to claim 2, wherein when the stop mode is performed, the following steps are implemented: Step c1: Check the mode switch of the metrological verification system. If it is in the stop mode, proceed to step c2; if it is in the automatic mode, proceed to step a1 of claim 2; if it is in the manual mode, proceed to step b1 of claim 3. Step c2: Reset the servo alarm signal and check the position recognition signal of the metrological verification system, and return to c1. BRIEF DESCRIPTION OF DRAWINGS

[0021] ATTACHMENT Figure 1 : Connection diagram of the flowmeter verification system. This figure shows the composition, relationship, and signal interaction of the device of the present invention. By observing this figure, one can clearly understand the composition, signal interaction flow direction, and connection method of the flowmeter verification system.

[0022] ATTACHMENT Figure 2 : Information interaction between the controller of the flowmeter verification system and the servo, reversing, and position devices. This figure shows the information interaction between the controller and the servo, reversing device, and position recognition device of the present invention.

[0023] ATTACHMENT Figure 3 : Information interaction between the computer of the flowmeter verification system and the controller and industrial camera. This figure shows the information interaction connection and information flow direction between the computer and the controller and industrial camera of the present invention.

[0024] ATTACHMENT Figure 4: Flowmeter calibration system motion trolley. The accompanying drawings show the flowmeter calibration system motion trolley of the present application, through which the trolley structure and track, rack mounting structure of the flowmeter calibration system can be intuitively understood.

[0025] attached Figure 5 : Flowmeter calibration system real scene diagram. The accompanying drawings show the application real scene of the flowmeter calibration system of the present application.

[0026] attached Figure 6 : Flowmeter calibration system real scene diagram. The accompanying drawings show the application real scene of the flowmeter calibration system of the present application. DETAILED DESCRIPTION

[0027] A flowmeter calibration system and method, characterized in that it comprises a computer and controller, a high-speed industrial camera, a data module (information transceiver module), a servo system (including a servo driver, a servo motor, and an encoder), a timer, a position recognition device, a precision track, a gear and gear sleeve transmission structure, a motion trolley, a high-speed network switch, a touch screen (with a display screen and input terminal functions), a reversing device, and supporting components and circuits. The servo system is signal-connected to the controller, the touch screen, camera, data module, timer, computer and controller are all signal-connected to the network switch, and the controller is also signal-connected to the position recognition device and reversing device, such as Figure 1 , Figure 2 , Figure 3 .

[0028] Electrical and signal connection: when performing measurement and detection, the readings of the detected flowmeter are captured by the (high-speed) camera (industrial camera) and transmitted to the computer through the high-speed network and information transceiver module. The servo system and controller are installed on the motion trolley, the weight of the trolley is borne by the precision track, and the weight of the motion trolley does not need to be driven by the servo system. The supporting detected flowmeter reversing device can automatically or manually reverse when performing measurement and detection, realizing bidirectional detection of the detected flowmeter in the forward and backward motion of the trolley, such as Figure 4 .

[0029] The position recognition device detection point is installed on the motion trolley and beside the precision track, when performing measurement and detection, the controller obtains the position and speed signals from the servo system at the same time, and synchronously superimposes the accurate recognition of the linear motion position of the trolley. The supporting high-precision intelligent timer realizes the entry of the trolley into the set detection area or the entry into the uniform speed running section when performing measurement and detection, and synchronously superimposes the accurate timing of the timer when obtaining the running time from the controller, such as Figure 5 .

[0030] When the metrological detection is carried out, the rotation speed and rotation number parameters of the servo system are high-speed interacted through digital communication, good anti-interference performance is realized, and the timeliness, stability and reliability of the metrological detection are ensured. The servo system motor adopts million-level pulse control per rotation, and simultaneously adopts the motor to drive the gear to be directly meshed with the rack, when the metrological detection is carried out, the speed and position accurate control are realized. Meanwhile, the servo system motor feeds back the million-level position parameter per rotation, when the metrological detection is carried out, the speed and position accurate collection are realized.

Claims

1. A flowmeter proving system characterized by, It comprises: Computer and controller, high-speed industrial camera, data module (information transceiver module), servo system (including servo driver, servo motor, encoder), timer, position recognition device, precision track, gear and gear sleeve transmission structure, motion trolley, high-speed network switch, touch screen (with display screen, input terminal function), reversing device, matching components and circuit. Among them, the servo system and the controller have signal connection, the touch screen, the camera, the data module, the timer, the computer and the controller are all connected with the network switch, and the controller is also connected with the position recognition device and the reversing device.

2. A flowmeter verification system and method based on claim 1, characterized in that, The motion speed of the servo system is transmitted through the gear and rack meshing mode, and when the measurement and detection are carried out, the precise conversion is the linear motion speed of the trolley; when the measurement and detection are carried out, the servo system and the controller are installed on the motion trolley, the weight of the trolley is borne by the precision track, and the weight of the motion trolley does not need to be driven by the servo system; characterized in that when the measurement and detection are carried out, the motion speed and the number of revolutions of the servo system are transmitted through digital communication at high speed, good anti-interference performance is realized, and the timeliness, stability and reliability of the measurement and detection are ensured.

3. A flowmeter verification system and method based on claim 1, characterized in that, The motor of the servo system adopts million-level pulse control per revolution, and simultaneously adopts the mode that the motor drives the gear to directly mesh with the rack, so that when the measurement and detection are carried out, the speed and position are accurately controlled; characterized in that the motor of the servo system feeds back million-level precision position parameters per revolution, and when the measurement and detection are carried out, the speed and position are accurately collected.

4. A flowmeter verification system and method based on claim 1, characterized in that, When the measurement and detection are carried out, the reading of the detected flowmeter is captured by the high-speed industrial camera (camera), and is transmitted to the computer through high-speed network and information transceiver module; characterized in that the position recognition device detection point is installed on the motion trolley and beside the precision track, and when the measurement and detection are carried out, the position and speed signals of the controller are obtained from the servo system at the same time, and the linear motion position of the trolley is accurately recognized synchronously.

5. A flowmeter verification system and method based on claim 1, characterized in that, A high-precision intelligent timer is matched, when the measurement and detection are carried out, the trolley enters the set detection area or the uniform speed running section, and at the same time, the running time is obtained from the controller, and the accurate timing of the timer is obtained synchronously.

6. A flowmeter verification system and method based on claim 1, characterized in that, A reversing device for the detected flowmeter is matched, when the measurement and detection are carried out, automatic or manual reversing can be realized, and bidirectional detection of the detected flowmeter in the back-and-forth motion of the trolley is realized.

7. The control method of the flowmeter calibration system according to claim 1, wherein When the measurement and detection are carried out, mode judgment and process switching are realized through the following steps: Step a0: user login, the calibration system identifies the user's identity, and after successful identification, enters the measurement and detection process; Step a1: detect the measurement and detection system mode switch, whether it is automatic, if so, enter step a2 of automatic measurement and detection; otherwise, whether it is manual, if so, enter step b1 related to claim 3; otherwise, whether it is stopped, if so, enter step c1 related to claim 4.

8. The control method of a flowmeter verification system according to claim 1, wherein, When the automatic mode is carried out, the following steps are realized: Step a2: detect whether the current set detection speed is higher than the minimum limit and lower than the maximum limit, if so, prompt the user that the measurement and detection can be carried out and proceed to step a3; otherwise, prompt the user on the display screen that the speed setting is wrong and exit the measurement and detection process. Step a3: detecting whether the position signal of the position recognition device is at the start bit or the end bit, if yes, then step a4 is performed, otherwise, this step is repeated; Step a4: detecting whether the measurement and verification system start button is triggered, if yes, then the measurement and verification is performed; meanwhile, detecting whether the servo system has a fault, if yes, then the servo system is controlled to stop the measurement and verification; otherwise, step a5 is performed; Step a5: detecting whether the measurement and verification detection stop button or the emergency stop button, the start bit or the end bit, the stop condition is triggered, if yes, then the servo system is controlled to stop the measurement and verification.

9. The control method of a flowmeter verification system according to claim 2, wherein, When the manual mode is performed, the following steps are implemented: Step b1: detecting the measurement and verification system mode switch, whether it is manual, if yes, then the manual measurement and verification step b2 is entered; otherwise, whether it is automatic, if yes, then the step a1 related to claim 2 is entered; otherwise, whether it is stop, if yes, then the step c1 related to claim 4 is entered; Step b2: detecting whether the measurement and verification system forward button is continuously triggered, if yes, then step b3 is performed; detecting whether the measurement and verification system back button is continuously triggered, if yes, then step b6 is performed; Step b3: detecting whether the position signal of the position recognition device is not at the end bit, if yes, then the manual measurement and verification is performed, step b4 is entered; otherwise, an alarm is given and the user is prompted on the display screen that the end position cannot be advanced, and the measurement and verification process is exited; Step b4: detecting whether the servo system has a fault, if yes, then the servo system is controlled to stop the measurement and verification; otherwise, step b5 is performed; Step b5: detecting whether the measurement and verification detection forward button continuously triggered is stopped, or the emergency stop button, the position recognition reaches the end bit and other stop conditions are triggered, if yes, then the servo system is controlled to stop the measurement and verification; Step b6: detecting whether the position signal of the position recognition device is not at the start bit, if yes, then the manual measurement and verification is performed, step b7 is entered; otherwise, an alarm is given and the user is prompted on the display screen that the start position cannot be backtracked, and the measurement and verification process is exited; Step b7: detecting whether the servo system has a fault, if yes, then the servo system is controlled to stop the measurement and verification; Otherwise, step b8 is performed; Step b8: detecting whether the measurement and verification detection back button continuously triggered is stopped, or the emergency stop button, the position recognition reaches the start bit and other stop conditions are triggered, if yes, then the servo system is controlled to stop the measurement and verification.

10. The control method of a flowmeter verification system according to claim 2, wherein, When the stop mode is performed, the following steps are implemented: Step c1: detecting the measurement and verification system mode switch, whether it is stop, if yes, then the stop measurement and verification step c2 is entered; otherwise, whether it is automatic, if yes, then the step a1 related to claim 2 is entered; otherwise, whether it is manual, if yes, then the step b1 related to claim 3 is entered; Step c2: resetting the servo alarm signal, detecting the measurement and verification system position recognition signal, returning to c1.

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