CN104715220A - Electromagnetic reader for mechanical type meter head - Google Patents
Electromagnetic reader for mechanical type meter head Download PDFInfo
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- CN104715220A CN104715220A CN201510120339.XA CN201510120339A CN104715220A CN 104715220 A CN104715220 A CN 104715220A CN 201510120339 A CN201510120339 A CN 201510120339A CN 104715220 A CN104715220 A CN 104715220A
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- rotary
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- circuit board
- circuit
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Abstract
An electromagnetic reader for a mechanical type meter head comprises a rotary character code disk on an existing mechanical type meter head and an LC oscillating circuit which is composed of a fixed circuit board and a rotary circuit board. The rotary circuit board is fixed in the rotary character code disk, the fixed circuit board is fixed on the outer side of the rotary character code disk, a capacitor C of the LC oscillating circuit is ten capacitors of different values, the ten capacitors are welded to the rotary character code disk at equal intervals, an inductor L of the LC oscillating circuit is composed of two parts of micro split U-shaped magnet core bodies of fixed magnet cores and rotary magnet cores, the fixed magnet cores are arranged on the fixed circuit board, the rotary magnet cores are arranged on the rotary circuit board in the rotary character code disk at equal intervals and correspond to the ten capacitors, and coils of the rotary magnet cores are in serial connection with the capacitor C to form a contactless magnetic coupled circuit. The electromagnetic reader can read mechanical values into a single chip microcomputer system in real time, keeps the mechanical values identical with electronic metering values, can conveniently carry out networking read through electronic later treatment and is accurate in display, low in cost and convenient to install and maintain.
Description
Technical field
The present invention relates to measuring instrument technical field, particularly relate to the gauging table for mechanical character code display mode, make it the mechanical type gauge outfit electromagnetism recognizer becoming machinery and electrons coexist.
Background technology
At present, the gauge outfit indicated number of gauging table is generally divided into machinery metering and electronic measurement, and machinery measures the direct-reading and stability that have had, is not subject to the constraint of electric energy, accumulated number persistence, but not easily realizes electronics networking and check meter.Electronic measurement is made up of electronic circuit, and networking and transmission side data just, but all will regularly replace battery, make troubles.Invent a kind of device that in real time digital conversion in mechanical gauge outfit can be become electronic digit, numeral accumulative in regular meter (as gas meter, flow meter, water meter etc.) gauge outfit can be read in Single Chip Microcomputer (SCM) system by (in real time), and keep mechanical registration and electronic measurement reading completely the same, direct-reading and the stability (unregulated power dependence) of mechanical count are given full play to, and can conveniently carry out networking by the process in electronics later stage and check meter, meet modernization requirement.
Summary of the invention
The object of the invention is to provide a kind of new way--F/D(frequency inverted becomes digital quantity) mechanical type gauge outfit electromagnetism recognizer, adopt contactless, resistance is not increased to original machinery, do not affect the precision of original table, reading circuit to be only just energized work when reading numeral, can the energy be saved, reduce replacing battery and make troubles, can conveniently carry out networking again and check meter.
The technical scheme adopted is:
Mechanical type gauge outfit electromagnetism recognizer is based on LC oscillatory circuit, by changing the numerical value of electric capacity C, just can change the centre frequency of oscillatory circuit, and leans on the difference of electronic loop vibration frequency, carries out counting differentiate by MCU single-chip microcomputer.This recognizer comprises rotated type code-disc, the LC oscillatory circuit that is made up of fixing circuit board and rotatable line plate in former mechanical type metering gauge outfit.Described rotatable line plate is fixed on inside rotated type code-disc, and fixing circuit board is fixed on the outside of rotated type code-disc.The electric capacity C of described LC oscillatory circuit is the electric capacity of ten different values, the electric capacity of ten different values respectively decile be welded on rotated type code-disc, the inductance L of LC oscillatory circuit is made up of fixed magnetic core and the U-shaped small Split type magnetic core body of rotary magnetic core two parts, and wherein fixed magnetic core part is in two outer rims being arranged on fixing circuit board one end respectively; Rotary magnetic core is ten and is arranged on the rotatable line plate inside rotated type code-disc with ten corresponding deciles of electric capacity respectively, and the coil on it is connected with electric capacity C respectively, forms contactless magnetically coupled circuit.The electric capacity of described ten different values configures from different numerals, the oscillation frequency that LC oscillatory circuit is formed is determined by electric capacity C, different numerals configures different C, coordinate from main circuit and can produce different resonance frequencies, recording frequency is carried out again by single-chip microprocessor MCU, differentiate corresponding numeral according to pre-set centre frequency again, form the electronics recognizer of mechanical type gauge outfit character code.
Advantage of the present invention is:
1, the present invention mainly have employed brand-new F/D(frequency inverted and becomes digital quantity) technology, have employed contactless working method, do not increase the resistance of former machinery, and adopt double end to distinguish mode, without dead band, limit without recognition.
2, the present invention mainly have employed magnetic coupling technology, has very strong antijamming capability, and it is not by the interference of various light wave, also not by various electromagnetic interference.
3, the present invention can lean on mechanical counter work in unregulated power situation, and when needing electronic counting, be energized the numerical value that can read on mechanical counter at any time, be easy to realize digital management, without recognition restriction, and energy-conservation, can also can check meter by electronic remote by manual metering.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is outside schematic diagram of the present invention.
Embodiment
Mechanical type gauge outfit electromagnetism recognizer, as Fig. 1, the present invention is the numerical value by changing electric capacity C, just the centre frequency of oscillatory circuit can be changed, because this oscillatory circuit has very wide frequency range, and the numeral identified just 10,10 center frequency point can be set up, it is larger that distance between frequency can be established, and to increase antijamming capability, prevents from identifying by mistake.Recognition mode is the difference by electronic loop vibration frequency, carries out counting differentiate by counter (MCU is inner).Based on LC oscillatory circuit, by changing the numerical value of electric capacity C, just can change the centre frequency of oscillatory circuit, and lean on the difference of electronic loop vibration frequency, carry out counting by MCU single-chip microcomputer and differentiate.This recognizer comprises rotated type code-disc 1, the LC oscillatory circuit that is made up of fixing circuit board 2 and rotatable line plate 3 in former mechanical type metering gauge outfit.Described rotatable line plate 3 is fixed on inside rotated type code-disc 1, and fixing circuit board 2 is fixed on the outside of rotated type code-disc 1.The electric capacity C of described LC oscillatory circuit is the electric capacity 6 of ten different values, the electric capacity 6 of ten different values respectively decile be welded on rotated type code-disc 1, the inductance L of LC oscillatory circuit is made up of fixed magnetic core 4 and the U-shaped magnetic core array of rotary magnetic core 5 two parts, and wherein fixed magnetic core 4 part is in two outer rims being arranged on fixing circuit board 2 one end respectively; Rotary magnetic core 5 is ten and is arranged on the rotatable line plate 3 inside rotated type code-disc 1 with ten corresponding deciles of electric capacity respectively, and the coil on it is connected with electric capacity C respectively, forms contactless magnetically coupled circuit.The electric capacity 6 of described ten different values configures from different numerals, the oscillation frequency that LC oscillatory circuit is formed is determined by electric capacity C, different numerals configures different C, coordinate from main circuit and can produce different resonance frequencies, recording frequency is carried out again by single-chip microprocessor MCU, differentiate corresponding numeral according to pre-set centre frequency again, form the electronics recognizer of mechanical type gauge outfit character code.
Claims (1)
1. mechanical type gauge outfit electromagnetism recognizer, based on LC oscillatory circuit, by changing the numerical value of electric capacity C, just the centre frequency of oscillatory circuit can be changed, and lean on the difference of electronic loop vibration frequency, carry out counting by MCU single-chip microcomputer to differentiate, this recognizer comprises the rotated type code-disc (1) in former mechanical type metering gauge outfit, the LC oscillatory circuit be made up of fixing circuit board (2) and rotatable line plate (3), it is characterized in that described rotatable line plate (3) is fixed on rotated type code-disc (1) the inside, fixing circuit board (2) is fixed on the outside of rotated type code-disc (1), the electric capacity C of described LC oscillatory circuit is the electric capacity (6) of ten different values, the electric capacity (6) of ten different values respectively decile be welded on rotated type code-disc (1), the inductance L of LC oscillatory circuit is made up of fixed magnetic core (4) and the U-shaped small Split type magnetic core body of rotary magnetic core (5) two parts, wherein fixed magnetic core (4) part is in two outer rims being arranged on fixing circuit board (2) one end respectively, rotary magnetic core (5) is on ten rotatable line plates (3) being arranged on rotated type code-disc (1) the inside respectively with ten corresponding deciles of electric capacity, coil on it is connected with electric capacity C respectively, form contactless magnetically coupled circuit, the electric capacity (6) of described ten different values configures from different numerals, the oscillation frequency that LC oscillatory circuit is formed is determined by electric capacity C, different numerals configures different C, coordinate from main circuit and can produce different resonance frequencies, recording frequency is carried out again by single-chip microprocessor MCU, corresponding numeral is differentiated again according to pre-set centre frequency, form the electronics recognizer of mechanical type gauge outfit character code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120339.XA CN104715220A (en) | 2015-03-19 | 2015-03-19 | Electromagnetic reader for mechanical type meter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120339.XA CN104715220A (en) | 2015-03-19 | 2015-03-19 | Electromagnetic reader for mechanical type meter head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104715220A true CN104715220A (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510120339.XA Pending CN104715220A (en) | 2015-03-19 | 2015-03-19 | Electromagnetic reader for mechanical type meter head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104715220A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5280163A (en) * | 1992-06-26 | 1994-01-18 | Symbol Technologies, Inc. | Drive circuit for resonant motors |
| CN2349626Y (en) * | 1998-12-09 | 1999-11-17 | 李建平 | Electronic reading out device for meter |
| CN103824112A (en) * | 2013-09-03 | 2014-05-28 | 韦淑沛 | Electromagnetic induction linear reading device for mechanical counter |
-
2015
- 2015-03-19 CN CN201510120339.XA patent/CN104715220A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5280163A (en) * | 1992-06-26 | 1994-01-18 | Symbol Technologies, Inc. | Drive circuit for resonant motors |
| CN2349626Y (en) * | 1998-12-09 | 1999-11-17 | 李建平 | Electronic reading out device for meter |
| CN103824112A (en) * | 2013-09-03 | 2014-05-28 | 韦淑沛 | Electromagnetic induction linear reading device for mechanical counter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |