Tele-metering direct-reading encoder of meter counter

Abstract

A remote-transmission direct-reading coder of a counter of a gauge includes a transparent character wheel box, a plurality of coding character wheels and a plurality of carry coupling wheels corresponding to the coding character wheels; the concentric circumference of an equal radius R of the spoke of each coding character wheel is provided with three sections of light transmission hole slots; ten numbers from 0 to 9 are uniformly arranged on the annular cylindrical surface of the coding character wheel in sequence. The invention is characterized in that the corresponding central angles of the three sections of light transmission hole slots on the coding character wheel are respectively as follows: Alpha 1 is 63 degrees plus / minus 3 degrees; Alpha 2 is 90 degrees plus / minus 3 degrees and Alpha 3 is 27 degrees plus / minus 3 degrees; the distances of the three sections of light transmission hole slots are respectively as follows: Beta 1 is 27 degrees plus / minus 3 degrees; Beta 2 is 63 degrees plus / minus 3 degrees in turn. The two sides of the coding character wheel and the arcs with concentric equal radius R of the three sections of light transmission hole slots are provided with five photoelectric sampling points. The remote-transmission direct-reading coder of the counter of a gauge has the beneficial effects of improving the coding precision of the coding character wheel, stably and accurately reading, stably and accurately reading when carry from a lower bit of ''9'' to a high bit of ''0'' is carried out on the character wheel.

Description

technical field

[0001] The invention relates to the field of meter data remote transmission systems, in particular to a counter remote transmission direct-reading encoder suitable for traditional mechanical meters such as wet and dry water meters or gas meters. Background technique

[0002] At present, there are many types of direct-reading meters that use photoelectric coding technology to collect character wheel information. In summary, there are still defects in two aspects:

[0003] 1. The design of the character wheel code disc is unreasonable. Owing to ignoring the carry linkage of each character wheel consisting of 2 driving teeth and 20 driven teeth, that is to say, the character wheel should step by 360°÷(20×2)=9° every time, so , the central angle corresponding to the light-transmitting hole slots of the coding character wheel and the intervals between each hole slot should also be a common multiple of 9°, otherwise when the character wheel rotation is in the crit...

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