Electromagnetic induction linear reading device for mechanical counter

Abstract

The invention relates to an electromagnetic induction linear reading device for a mechanical counter. The electromagnetic induction linear reading device comprises a counting word wheel shaft (1), a carry wheel shaft (2), a plurality of carry wheels (3), a plurality of counting word wheels (4), a plurality of inductive sensors(5), a sensor group circuit board (6), electromagnetic induction bodies (7) and a reference inductive sensor (8), wherein the counting word wheels (4) are connected with the carry wheels (3); and each of the counting word wheels (4) is externally provided with the plurality of inductive sensors(5) and internally provided with the plurality of electromagnetic induction bodies, so that when the counting word wheels rotate for a cycle, the detected frequencies of the plurality of electromagnetic induction bodies are in sequential increase or decrease, the counting word wheels realize more than 360 code numbers, and reading precision is improved.

Description

technical field [0001] The invention belongs to the field of metering, and in particular relates to a direct-reading mechanical counter that uses electromagnetic induction frequency measurement technology to realize electromechanical-digital conversion of traditional mechanical counters; it is widely applicable to remote meter reading of electric meters, water meters, gas meters and other meters. Background technique [0002] Traditional mechanical counters obtain data by looking at the numbers with the naked eye. With the rise of labor prices and the realization of energy saving and consumption reduction, the country has introduced tiered prices and time-sharing prices for energy use. To achieve this goal, it is necessary to implement Remote meter reading can solve the problem of policy implementation. How to convert mechanical readings into electronic readings, especially water meters, gas meters, and heating meters that need to be measured without electricity? The techno...

AI Technical Summary

Problems solved by technology

How to convert mechanical readings into electronic readings, especially water meters, gas meters, and heating meters that need to be measured without electricity? The technology of counting, can finally be because people often only be provided with limited coding to a word wheel, adopt 4 to 5 photoelectric sensors black and white (0 or 1 binary) technology as CN1363912, CN102261940, CN202947769, CN101571410, CN2919201, maximum only has 32 As stated in the 2006100489494 patent, the three electromagnetic sensors have 27 codes, and because the wheels are cyclically rotating, these codes are only more than 10 really effective, and can only barely recognize the number of characters from 0 to 9. We know that the rotation of the mechanical character wheel is continuous, that is to say, there is a decimal point. The naked eye carries out the decimal point carry out according to the rounding agreement. However, if the computer technology can achieve rounding, a number needs at least 10 codes, such as the number 1, It needs to be expressed as: 1.0, 1.1, 1.2...1.9, etc. ten groups of codes, ten numbers from 0 to 9, then at least 100 codes are needed to round up, so the previous technology, because the codes are not enough (<100), resulting in the character There is an error in wheel recognition, which is fatal to metering products. Although adding sensors can increase the amount of coding, it is often difficult to achieve due to insufficient structural space.

Images