[Chinese instrument network meter patent] creative limit, instrumentation invention. Today, we introduced a national invention-granting patent—an IC card water metering device based on image discrimination. The patent was applied for by the Hebei Institute of Hydraulic Science and was authorized on August 24, 2016. The gray sensor of the present invention is provided with a transmitter and a receiver. The infrared light emitted by the transmitter is irradiated on the color bar corresponding to the gray sensor. The receiver receives the reflected infrared light and outputs the signal to the micro signal. In the processor, the grayscale strip is divided into 10 areas from beginning to end. The first area is the lightest gray level, and the last area is the darkest gray level, and each area is 0 to 9 in the character wheel unit. An Arabic number corresponds. Valve Spare Parts including body, bonnet, yoke, disc, seat, ball, retainer, stem, flanges, packing, bolt, nuts ect. Our factory specialized in providing forged steel spare parts in raw materil, semi-finished or finished manching. The forged materil we manufactured like A105, LF2, F11, F22, F91, F92, F53, 12Cr1MoV etc. Valve spare parts material pressure ranging from ANSI classes 150 to classes 4500. The sizes of valve spare parts according to the requirements of the custmer. Our factory valve spare parts serviced numbers of state-owned EPC contractor, valve factory or project owner, even exported to Europen, USA in last five years. Forged Steel Raw Material and Semi-Finished Products Valve Forged Steel Raw Material,Forging Valve Body,Forging Valve Bonnet,Forging Valve Components Yongjia South Trading Co.,Ltd , https://www.n-lvalve.com
Description of the Invention The present invention belongs to the technical field of metering devices and relates to an IC card water metering device based on image discrimination.
BACKGROUND OF THE INVENTION A water metering device is an instrument that continuously measures, records, and displays the volume of water flowing through a water meter under measuring conditions. It has a large amount of use and a wide range of use. It is closely related to the vital interests of millions of households, and is also saving and The necessary means to control water and reduce production costs. Most of the existing IC card water metering devices use contact-type measurement methods, and have potential hidden dangers such as electric shock failure, affecting the measurement accuracy.
SUMMARY OF THE INVENTION In order to overcome the defects of the prior art, the present invention designs an IC card water metering device based on image discrimination, and adopts an image gray-scale acquisition method to realize non-contact detection, which has no influence on the accuracy of the original meter, and can be avoided at the same time. Some metering devices have potential hazards such as contact failure due to contact-type measurements and can achieve higher-accuracy metering than other digital metering devices.
The specific technical solution adopted by the present invention is that: an IC card water metering device based on image discrimination includes a watch case, a character wheel display window is disposed on the watch case, a counting device is disposed in the watch case, and the counting device includes a fixed shaft and a set; Digital character wheel, fixed shaft and case are fixedly connected, digital word wheel is set on the fixed shaft and forms a rotational fit with the fixed shaft. The key is: add an image recognition system in the case, the image recognition system includes a microprocessor, multiple The gray scale sensor and the gray scale sensor are all connected with the microprocessor. Each group of digital character wheels includes at least three word wheel units. The left side of each character wheel unit is a digital display area, and one Arabic numeral in 0-9 is displayed one by one. The numbers on all character wheel units are from right to left in decimal relation. The gray scale is on the right side of each character wheel unit, and the lightest grayscale correction color is set on the outside of the leftmost character wheel unit. Bar, the outermost right-hand wheel unit is provided with a single-color darkest grayscale correction color bar, and a grayscale correction color bar, a darkest gray correction bar, and a grey top of each gray bar. degree Sensors, all grayscale sensors placed side by side above the fixed axis. 
The figure is a schematic structural view of the present invention
The included angle between the character wheel display window and the gray scale sensor is 90°, and the difference between the number displayed in the character wheel display window and the number corresponding to the color strip just under the gray scale sensor is 1 33. The color on the lightest grayscale correction color bar is yellow or white, and the color on the darkest grayscale correction color bar is black.
The beneficial effect of the present invention lies in that an image recognition system is added in the watchcase, the grayscale sensor has no direct contact with the digital character wheel, and the infrared light emitted by the transmitter of the grayscale sensor irradiates the color bar corresponding to the grayscale sensor. The receiver of the gray-scale sensor receives the reflected infrared light and outputs the signal to the microprocessor. This kind of gray-scale image acquisition method can realize non-contact detection, which has no effect on the accuracy of the original meter, and can avoid some measures. The device has potential dangers such as contact failure due to contact measurement, and can achieve higher accuracy than other digital metering devices.
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