Electronic direct reading counter of meter

Abstract

An electronic direct reading counter of a meter comprises a plurality of number reading wheels and a plurality of carry coupling wheels installed on one side of the number reading wheels in parallel through a wheel shaft and corresponding to the number reading wheels. The electronic direct reading counter is characterized in that the plurality of number reading wheels are sectioned by the coaxial line and installed on a counter support at intervals, a permanent magnet and a magnetic shielding plate are respectively arranged on shaft core parts on two sides of each number reading wheel, a magnetic induction angle sensor corresponding to the coaxial line of the shaft core permanent magnet of the number reading wheel is respectively arranged between the number reading wheels, and the magnetic induction angle sensor is installed on an assembly circuit board of the magnetic induction angle sensor in welding mode. The electronic direct reading counter has the advantages of being capable of achieving 360-degree full-circle measurement of the number reading wheel and accurate and stable in reading. The measurement resolution rate depends on analog-to-digital conversion actual accuracy. The number wheel carries '0' when meeting '9', and number is read from low order to high order in carry. Enough referenced information is provided, repeated code and error code cannot happen, electronic components are reduced substantially, and product fault risk is greatly reduced.

Description

technical field [0001] The present invention relates to the field of meter data network communication system, belonging to the concept category of the Internet of Things, especially an electronic direct reading meter suitable for traditional mechanical meters such as wet (liquid-sealed) water meters, dry water meters, or membrane gas meters. counter. Background technique [0002] At present, in traditional mechanical metering instruments such as wet (liquid-sealed) water meters, dry water meters or membrane gas meters, photoelectric coding technology is mainly used to collect character wheel coding information to realize electronic direct reading of gear drive accumulative counters, such as Chinese Invention Patent 200810141680.3 "Meter Counter Remote Transmission Direct-reading Encoder", this type of counter still has defects in the following two aspects: [0003] 1. The contradiction between the limited size of the counter and the limited character wheel coding, the limit...

AI Technical Summary

Problems solved by technology

[0003] 1. The contradiction between the limited size of the counter and the limited character wheel coding, the limited coding resources cannot accurately locate the position of the character wheel, resulting in the lack of necessary information when the character wheel enters the "0" position every "9" Even if the geometric size of the counter is allowed, the positioning accuracy of the word wheel can be improved by increasing the number of photoelectric tubes (increased encoding data), but at the same time it brings about an increase in manufacturing costs, and the electronic components The increase in components also increases the risk of product failure, which affects the promotion and application of electronic direct reading of traditional mechanical meters, especially direct reading water meters and direct reading gas meters.

[0004] 2. When the wet (liquid-sealed) water meter adopts photoelectric coding technology to collect the word wheel coding information to realize the electronic remote transmission and direct reading of the counter, the light path passes through the possible existence of air bubbles (which may be caused during production, transportation, storage and use) When the liquid seals the medium, the reflection and refraction of light will cause reading errors and other faults are inevitable. This kind of excessive requirements on the production and use process is difficult to put into large-scale production and application in practice.

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