Absolute meter reading encoding method

Abstract

The absolute meter reading encoding method includes: expressing each number in digital wheel by using binary number; constituting one code via sequential arranging; and taking four bits in certain order to code without duplication. Owing to that the numbers of transducer distribute in four different positions, each position of the digital wheel is needed to repress only one state, 0 or 1. The transducers used are many and varied and the methods are many and varied, the code realized may be easy and reliable.

Description

technical field [0001] The invention relates to a coding method for the absolute reading of a scale. Background technique [0002] In the past, the meter reading of remote transmission sets used 1. The base of the copying table. 2. It is obtained by continuous accumulation of pulses. The problem is a. The pulse may be overmetered or missed. b. Any data will be lost when the meter without electricity itself, such as water meter and gas meter, loses power during the measurement process. Introduce a kind of method now, only need to turn on the electricity to transcribe the data during the meter reading process, do not need to turn on the electricity during the metering process. [0003] Although this kind of idea has also been thought of to realize it before, using photoelectricity (or other methods) to convert it into BCD codes, but they are all based on an idea. To place four photoelectric sensors in one position, first of all, they must be able to...

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Problems solved by technology

[0003] Although this kind of idea has also been thought of to realize it before, using photoelectricity (or other methods) to convert it into BCD codes, but they are all based on an idea. To place four photoelectric sensors in one position, first of all, they must be able to place four photoelectric sensors in one position. Four sensors can be placed up and down, and the next four sensors should work independently of each other without interfering with each other; if space permits, if figure 1 As shown, when the window corresponds to "0", the data at position "5" is fetched; when the window corresponds to "1", the data at position "6" is fetched; when the window corresponds to "2", the data at position "7" is fetched , and so on, when the window corresponds to "9", the data at position "4" is obtained, and "0000", "0001", --- "1001" are obtained respectively, thus completing the identification work, but like the water meter and the electric meter themselves The volume of the watch is not large, the scale is not large, and there is not enough width, so the above work is not only complicated in process, but also not reliable.

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