Photoelectric sampler for smart water meter

Abstract

The invention provides a photoelectric sampler for a smart water meter comprising an upper housing and a lower housing; the upper housing is installed on an upper end surface of the lower housing; thelower housing is provided with a sampling mechanism therein; the sampling mechanism successively comprises a lower base plate, an upper plate, a first PCBA plate and a second PCBA plate from bottom to top; the lower base plate is provided with multiple groups of drive gears; an output shaft is installed at a center of the drive gear; a lower end of the output shaft is fixed on the lower base plate; the upper base plate and the first PCBA plate are provided with through holes for the passing through of the output shafts; code discs are installed on upper ends of the output shafts; the code discs are positioned above the first PCBA plate and the second PCBA plate is positioned above the code discs; the drive gears use the decimal system for counting; the drive gears comprise a top digit drive gear and a lowest order drive gear; an input magnetic cylinder is installed outside the lowest order drive gear; the input magnetic cylinder comprise a support and a magnet; the magnet is installedon the support; an upper end of the support is provided with a tooth ring which is engaged with the lowest order drive gear. The invention improves the counting accuracy of the photoelectric sampler.

Description

technical field [0001] The invention relates to the technical field of intelligent water meters, in particular to a photoelectric sampler for intelligent water meters. Background technique [0002] An existing intelligent water meter includes a counter and a photoelectric sampler arranged in the movement. The counter includes a plurality of word roulettes, and the photoelectric sampler includes a plurality of PCBA boards provided with infrared photoelectric cells and control chips. Two PCBA boards are respectively arranged on both sides of the word wheel, one PCBA board is used to transmit optical signals, and the other PCBA board is used to receive optical signals. There are grooves for the light to pass through on the character wheel. When the character wheel rotates, the light signal has two possibilities: penetration and blocking. According to the position of the character wheel, a group of codes are formed correspondingly. The chip translates the code into decimal data...

AI Technical Summary

Problems solved by technology

However, because the existing movement is immersed in water, the photoelectric sampler is in an environment with high humidity, and the photoelectric sampler does not have good waterproof and moisture-proof capabilities, so it is easy to be damaged, especially Once the PCBA board in the photoelectric sampler gets wet, the count will be inaccurate. When the count is large, the user will pay more water bills. When the count is small, the water company will suffer losses, which may cause many problems.

Therefore, the existing integrated smart water meter has the problem that the structure of the counter and the photoelectric sampler is interdependent and cannot be separated. After that, it needs to be directly replaced with a new movement, resulting in a shorter service life of the movement

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