Character-wheel-type meter reading method and character-wheel-type direct-reading meter

Abstract

The invention discloses a character-wheel-type meter reading method and a character-wheel-type direct-reading meter. With respect to a photoelectric direct-reading type meter, at an optical pulse emitting end, a coded optical pulse is transmitted in optical fibers; the coded optical pulse irradiates to a specific position on a character wheel, wherein the specific position is provided with a light reflection or transmission area corresponding to characters on the character wheel; at an optical pulse receiving end, the coded optical pulse from the light reflection or transmission area is received by optical fibers and decoded by a decoding module so as to finally obtain the corresponding characters of the character wheel; the optical fibers at the optical pulse emitting end and the opticalfibers at the optical pulse receiving end are arranged in pairs and are opposite in positions; and in accordance with the system of the character wheel, a corresponding number of pairs of the opticalfibers at the optical pulse emitting / receiving ends are arranged so as to meet a condition that the emitted coded optical pulse and the received coded optical pulse in each pair of optical fibers areconsistent. By means of the invention, the problems of susceptibility to optical pollution, large optical interference between adjacent meters, large electromagnetic interference, poor safety, low reliability, high reading error rate and the like of the traditional direct-reading type meter are solved.

Description

Technical field

[0001] The invention relates to a character wheel type meter reading method using optical fiber conduction and a character wheel type direct reading meter head, belonging to the technical field of measurement control. Background technique

[0002] At present, gas management in most areas of my country adopts mechanical meters. Meter readers of gas companies visit door to door to read meters every month, and users pay according to the amount of gas used. In the whole process, there are several disadvantages:

[0003] 1. Meter reading. More and more community management has been strengthened, user requirements have increased, and contradictions arising from household meter reading have increased linearly. In order not to disturb the people for home meter reading, in recent years, many residential communities have moved electricity meters and water meters from their homes to the corridors. However, the gas meter cannot be resolved due to safety issues, and the meter...

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