On-line fluid small flow detection system and method for rotameter based on machine vision

Abstract

The invention discloses an online fluid small flow detection system based on machine vision and an online fluid small flow detection method based on machine vision for a float flowmeter and relates to the technical field of devices for measuring the liquid level height caused by the elevating power of fluid flow. The system comprises a float flowmeter, a visual sensor, an ARM+DSP dual-core processor, a wireless signal transceiver and an upper computer, wherein a floater is located in a to-be-monitored pipeline of the flowmeter, and a lens of the visual sensor is aligned with the float flowmeter and is used for collecting visual information of the float flowmeter; the ARM+DSP dual-core processor is used for preprocessing the obtained visual information and outputting digital signals, and the obtained signals are transmitted to the upper computer by the wireless signal transceiver so as to be processed. According to the system, the information is transmitted by virtue of a wireless network, and the position of a camera and the flow of the fluid are self-adaptively adjusted by virtue of the wireless network, so that current complex measurement systems are simplified; the real-time flow monitoring is realized by virtue of a machine vision technique; a measurement method is simple, convenient, rapid and safe.

Description

technical field [0001] The invention relates to the technical field of a liquid level device generated by measuring the lifting force of fluid flow, in particular to a machine vision-based system and method for detecting small fluid flow on-line with a float flowmeter. Background technique [0002] In the industrial automation production site, in order to achieve fast and effective production, improve the stability of production, enhance the safety of the production line, and produce better products, it is often necessary to accurately measure the flow rate and realize automatic adjustment and intelligent control. Make the production result more perfect. [0003] At present, the commonly used small flow measurement methods of fluids include differential pressure method, blowing method and capacitance method. The existing measurement method needs to design and complete the corresponding small flow sensor according to the actual situation in different application occasions. T...

AI Technical Summary

Problems solved by technology

At present, there are still many shortcomings in the method of using rotameter to measure the small flow of fluid: mechanical method for measurement, low measurement accuracy and complex structure of the measurement device, and it is not easy to be remotely controlled

The measurement device of this method is relatively complicated, and the current short-distance management measurement has great limitations on the working position and environment, and it is difficult to meet the intelligent and remote management measurement of small fluid flow

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