Electromagnetic induction linear reading device for mechanical counter

A mechanical counter and electromagnetic induction technology, applied in the field of measurement, can solve problems such as character wheel recognition errors, insufficient structural space, and insufficient coding, and achieve the effects of simple wiring, accurate readings, and low cost

Inactive Publication Date: 2014-05-28
韦淑沛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 mec

Method used

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  • Electromagnetic induction linear reading device for mechanical counter
  • Electromagnetic induction linear reading device for mechanical counter
  • Electromagnetic induction linear reading device for mechanical counter

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no. 1 Embodiment

[0029] Such as Figure 1 to Figure 3 As shown, the electromagnetic induction linear reading device of a mechanical counter includes a counting digital wheel shaft 1, a carry wheel shaft 2, a carry wheel 3, a counting digital wheel 4, an inductance sensor 5, a sensor group circuit board 6 and the counting digital wheel 4 connected carry wheels 3, the inside of the counting digital wheel 4 is embedded with an inductive sensor 7 of a certain shape; the external counting digital wheel 4 is provided with a plurality of inductive sensors 5 distributed along the circumferential direction and at intervals of 36 degrees , the inductance sensor 5 is composed of an inductance coil L and a capacitor C connected in parallel with it, and one end of the parallel connection is connected to the anode of a diode D, and the other end is connected with the cathode of the diode to lead out a line. The function of the diode D is to isolate the mutual influence of each inductance sensor 5 , in addit...

no. 2 Embodiment

[0040] Figure 5 It is a schematic cross-sectional view of the word wheel in the second embodiment, and the structure of one counting wheel corresponding to two inductance sensors is as follows Figure 5 , it consists of 4 kinds of materials with different thicknesses arranged according to a certain rule. One arrangement is: if the thickness of the material is set to d1, d2, d3, d4 from thin to thick, then d1 will occupy 72 degrees at first, and then d2 will occupy 72 degrees. , then d3 occupies 72 degrees, then d4 occupies 72 degrees, then d3 occupies 36 degrees, then d2 occupies 36 degrees, and then returns to the original d1. For a certain wheel, two frequency values ​​(FA, FB) are obtained. After subtracting the frequency (F8) of the reference inductance sensor, the influence of environmental factors can be filtered out. The frequency difference after MCU processing can be expressed as : fa, fb, these two data, if the value is set to 1 to 21 after setting, then the code n...

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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...

Claims

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Application Information

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IPC IPC(8): G06M1/274
Inventor 韦淑沛
Owner 韦淑沛
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