Coder for remote transmitting direct reading water meter

Abstract

The coder for teletransmitting direct read water meter has character wheel code disk mounted onto character wheel shaft and with five first segments and five second segments, and one receiving and transmitting phototube device with seven photoelectronic sampling points for reading out one kind of binary code from the segments. The receiving and transmitting phototube device includes emitting lightconducting board, receiving light conducting board, photoelectronic samplings, LED's and photodiodes. The photodiodes and the receiving light conducting board are set corresponding to the LED's and the emitting light conducting board; the seven photoelectronic sampling points are set homogeneously along one arc and in the same radial distance to the character wheel shaft. The present invention has the beneficial effects of single track code design of the code disc, shielded light conducting boards to shield non-sampling light, transparent casing and waterproof photodiodes.

Description

technical field [0001] The invention relates to the field of remote transmission systems for water meters, and mainly relates to an encoder for remote transmission and direct-reading water meters. Background technique [0002] At present, the direct-reading water meter with photoelectric collection of character wheel information is still in its infancy. The existing remote direct-reading water meter has certain defects in the design of the code disc and the installation of photoelectric devices and communication devices, which affects The popularization and application of remote direct-reading water meters, such as the design of the code disc, some use the design of multi-channel codes, that is, several circles with different diameters are used to design the code channels, which is the miniaturization of the placement of photoelectric cells. Putting forward higher requirements, there will be many difficulties in the actual industrial production; there is also a single-channe...

AI Technical Summary

Problems solved by technology

[0002] At present, the direct-reading water meter with photoelectric collection of character wheel information is still in its infancy. The existing remote direct-reading water meter has certain defects in the design of the code disc and the installation of photoelectric devices and communication devices, which affects The popularization and application of remote direct-reading water meters, such as the design of the code disc, some use the design of multi-channel codes, that is, several circles with different diameters are used to design the code channels, which is the miniaturization of the placement of photoelectric cells. Putting forward higher requirements, there will be many difficulties in the actual industrial production; there is also a single-channel code design, but due to the limitations of its design ideas, this design requires high dimensional accuracy and installation accuracy of components , it will also bring greater difficulties in actual implementation; there is no breakthrough thought on the installation position of the photoelectric cell and the transmission of light, so that it leads to the installation of the photoelectric cell and its The difficulty of the circuit board will eventually lead to the result that the product is difficult to produce due to the high requirements of the manufacturing and installation process

In addition, for wet water meters, since the counter is immersed in water, such a design is difficult to achieve the purpose of direct reading.

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