Accurate Reading Method of Photoelectric Direct Reading Water Meter

Abstract

The invention discloses an accurate reading method of a photoelectric direct reading water meter, including completed preparation. A voltage detection value of the background noise is obtained through turning off a photoelectric luminous tube and turning on a photoelectric receiving tube. A voltage detection value of the actual detection is obtained through turning on the photoelectric luminous tube and the photoelectric receiving tube. A voltage detection value of the theoretical detection is obtained through the voltage detection value of the actual detection subtracting the voltage detection value of the background noise. According to the voltage detection value of the theoretical detection, a corresponding reading of the photoelectric tube is determined through using 0-X-1 ternary way: a word wheel reading is determined by the corresponding reading of the photoelectric tube to complete the accurate reading of the photoelectric direct reading water meter. The method provided by the accurate reading method of a photoelectric direct reading water meter has the advantages through two simple steps, that is, through detecting the sampled voltage value subtracting the background nose and increasing a corresponding value of the photoelectric tube so as to greatly increase a coding group corresponding to the photoelectric tube. The advantages of the method are that the detection accuracy of the word wheel of the photoelectric direct reading water meter can be greatly improved, the jump of the data can be avoided, the reading is accurate and reliable, and the method is easy and simple.

Description

technical field [0001] The invention belongs to the field of measurement and control, and in particular relates to an accurate reading method for a photoelectric direct-reading water meter. Background technique [0002] With the development of economy and technology and the improvement of people's living standards, smart water meters have been widely used in people's production and life, bringing endless convenience to people. [0003] Photoelectric direct reading water meter is an important part of smart water meter. As the most important part of water measurement, its performance is directly related to the accuracy of measurement. At present, the photoelectric direct reading water meter adopts the photoelectric direct reading method to collect the reading of the water meter, that is, to print a specific mark on the outer edge of the 0~9 position of the counter wheel of the ordinary water meter, and then determine the specific mark through the photoelectric sensor and the c...

AI Technical Summary

Problems solved by technology

[0005] However, in the current readings of photoelectric water meters, inaccurate photoelectric readings often occur. After analysis, it mainly includes the following two situations: 1) Due to the characteristics of photoelectricity, photoelectric direct reading water meters are easily interfered by external light, resulting in photoelectricity. The measurement of the tube is not accurate; 2) The acquisition accuracy of the photocell is not enough, resulting in a high probability of data jump, which seriously affects the accuracy of the photocell reading

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