CN102982851B - Device for driving meter needle to rotate by utilizing gas and driving method thereof - Google Patents
Device for driving meter needle to rotate by utilizing gas and driving method thereof Download PDFInfo
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- CN102982851B CN102982851B CN201210472497.8A CN201210472497A CN102982851B CN 102982851 B CN102982851 B CN 102982851B CN 201210472497 A CN201210472497 A CN 201210472497A CN 102982851 B CN102982851 B CN 102982851B
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Abstract
The invention discloses a device for driving a meter needle to rotate by utilizing gas and a driving method thereof. The device for driving the meter needle to rotate by utilizing gas comprises a gas meter body and a gas meter control circuit connected with the gas meter body; the gas meter body comprises an annular sealing gas cavity, a magnetic sealing sliding block, a semiconductor temperature plate and two temperature sensing resistors arranged inside the annular sealing gas cavity, and a magnetic meter needle arranged above the annular sealing gas cavity and interacting with the magnetic sealing sliding block; the inner part of the annular sealing gas cavity is divided into a left cavity and a right cavity by the magnetic sealing sliding block and the semiconductor temperature plate; the two temperature sensing resistors are respectively arranged inside the left cavity and the right cavity; and the semiconductor temperature plate and the two temperature sensing resistors are all connected with the gas meter control circuit. The gas pressure is changed by utilizing the temperature, and the magnetic sealing sliding block is pushed by the gas pressure, so that the magnetic sealing sliding block drives the magnetic meter needle to rotate clockwise or anticlockwise. The device is simple in structure and convenient to use, is not disturbed by electromagnetism, and can ensure normal rotation of the meter needle.
Description
Technical field
The present invention relates to instrument instruction field, specifically a kind of utilize gas-powered gauge pointer to rotate device and driving method.
Background technology
The shortcoming that convenient type crossed coil motor for instrument popular at present exists: convenient type crossed coil motor for instrument mainly forms and comprises hairspring, convenient type crossed coil and magnet steel.When convenient type crossed coil pointer motor forwards another position to from a position, first the acting force acting of hairspring will be overcome, gauge pointer is subject to the return action power of hairspring always when forwarding new position to, this just requires that convenient type crossed coil will pass into suitable electric current generation always and keep balancing to maintain pointer with the silky reacting force of trip.So gauge pointer all will overcome the reacting force of hairspring and power consumption all the time when deflecting instruction; In addition due to factors such as mechanical vibration, cross coil electrical machinery in use, often occurs that instruction initial zero position has skew or indicates situation not in place, thus brings skew or the position stroke misregister of gauge pointer zero-bit.Although stepper motor overcomes the shortcoming of convenient type crossed coil, complicated in mechanical structure, make difficulty, bring that manufacturing cost is high, poor reliability.Above two kinds of motors are all lean on the driving force of electromagnetic field that gauge pointer is rotated, and are easily subject to electromagnetic interference (EMI), can not meet the application under strong electromagnetic interference environment.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of utilize gas-powered gauge pointer to rotate device and driving method, solve indicating instrument instrument function under strong electromagnetic interference environment be difficult to realize problem.
Technical scheme of the present invention is:
The device utilizing gas-powered gauge pointer to rotate, the gas instrument control circuit including gas instrument body He be attached thereto; Described gas instrument body includes ring seal air chamber, the magnetic seal slide block be arranged in ring seal air chamber, conductor temperature sheet and two temperature sensing resistors, to be arranged at above ring seal air chamber and magnetic gauge pointer interactional with magnetic seal slide block; Ring seal air chamber inside is divided into left chamber and right chamber by described magnetic seal slide block and conductor temperature sheet, two described temperature sensing resistors are placed in left chamber and right chamber respectively, and described conductor temperature sheet is all connected with described gas instrument control circuit with two temperature sensing resistors.
Described conductor temperature sheet includes the P be electrically connected to each other and holds conductor temperature sheet and N to hold conductor temperature sheet, described P holds between conductor temperature sheet and magnetic seal slide block and forms left chamber, and described N holds between conductor temperature sheet and magnetic seal slide block and forms right chamber;
Described gas instrument control circuit comprises CPU, and the left chamber's temperature sensor output terminal be connected with CPU respectively, right chamber temp sensor output and P hold conductor temperature sheet power input, and the N of ground connection holds conductor temperature sheet power input; Described left chamber's temperature sensor output terminal is electrically connected with the temperature sensing resistor be arranged in left chamber, described right chamber temp sensor output is electrically connected with the temperature sensing resistor be arranged in right chamber, described P holds conductor temperature sheet power input to hold conductor temperature sheet to be electrically connected with P, and described N holds conductor temperature sheet power input to hold conductor temperature sheet to be electrically connected with N.
Described magnetic gauge pointer includes and is arranged at gauge pointer body above ring seal air chamber and is fixed on gauge pointer body and the gauge pointer magnetic be positioned at directly over magnetic seal slide block.
Described gas instrument control circuit also includes signal amplifier, signal amplifier includes current output terminal, controls reference voltage input terminal and direct current signal input end, current output terminal and the P of described signal amplifier hold conductor temperature sheet power input to be connected, the control reference voltage input terminal of described signal amplifier is connected with the control reference voltage output terminal of CPU, and the direct current signal input end of described signal amplifier is connected with the pwm control signal output terminal of CPU by integrating circuit.
Described integrating circuit includes two groups of integral unit compositions parallel with one another, and described often group integral unit includes resistance and electric capacity, and resistance is connected with capacitances in series.
The method utilizing gas-powered gauge pointer to rotate, comprises the following steps:
(1), first export pwm control signal by the CPU of gas instrument control circuit, pwm control signal becomes direct current signal by integrating circuit AC signal, and this direct current signal entering signal amplifier compares with control reference voltage signal;
(2), when direct current signal is greater than control reference voltage signal, the current output terminal of signal amplifier exports positive signal, namely direction of current can be held conductor temperature sheet to flow to P by N and hold conductor temperature sheet, according to the inherent characteristic of conductor temperature sheet, the temperature in left chamber will be made to reduce, temperature in right chamber raises, thus make gaseous tension step-down in left chamber, right chamber gas pressure inside uprises, thus magnetic seal slide block moves to left chamber, magnetic seal slide block thus drive magnetic gauge pointer to be rotated counterclockwise;
(3), when direct current signal is less than control reference voltage signal, the current output terminal of signal amplifier exports negative signal, namely direction of current can be held conductor temperature sheet to flow to N by P and hold conductor temperature sheet, according to the inherent characteristic of conductor temperature sheet, the temperature in left chamber will be made to raise, temperature in right chamber reduces, thus gaseous tension in left chamber is uprised, right chamber gas pressure inside step-down, thus magnetic seal slide block to the right chamber move, magnetic seal slide block thus drive magnetic gauge pointer to turn clockwise;
(4), when direct current signal equals to control reference voltage signal, signal amplifier no signal exports, result magnetic gauge pointer transfixion;
(5), when left chamber and right chamber indoor temperature change generated in case, two temperature sensing resistors can gather the temperature in left chamber and right chamber respectively, and be then transferred to CPU, CPU judges magnetic gauge pointer current location according to temperature acquisition value.
When in described step (5), CPU judges magnetic gauge pointer current location, if current location is not in error allowed band, CPU regulates pwm control signal to export further, until magnetic gauge pointer pointed location is in the scope that error specifies, CPU regulates end.
When described direct current signal strengthens, magnetic equipment pointer rotates counterclockwise speed and accelerates; When described control reference voltage signal strengthens, magnetic equipment pointer rotates clockwise speed and accelerates.
Advantage of the present invention:
(1), magnetic seal slide block of the present invention plays the effect of ring seal air chamber internal insulation, and it can be free to slide between two chambers, the subsidiary permanent magnet of magnetic seal slide block, thus finally can drive the clockwise of magnetic gauge pointer or rotate counterclockwise;
(2) principle that, magnetic seal slide block of the present invention rotates is: left chamber and right chamber indoor temperature change generated in case, according to change law of gas p1*v1/t1=p2*v2/t2, namely left chamber's temperature raises, air pressure becomes large, right chamber temp reduces, air pressure reduces, and magnetic seal slide block can promote to the chamber that air pressure is low by the high chamber of air pressure, thus magnetic seal slide block is moved.
The present invention utilizes temperature change air pressure, and air pressure promotes magnetic seal slide block, magnetic seal slide block thus drive magnetic gauge pointer clockwise or rotate counterclockwise; Structure of the present invention is simple, easy to use, not by electromagnetic interference (EMI), well can ensure the normal rotation of gauge pointer.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device that the present invention utilizes gas-powered gauge pointer to rotate.
Fig. 2 is the structural representation of gas instrument control circuit of the present invention.
Embodiment
1, Fig. 1 is seen, a kind of device utilizing gas-powered gauge pointer to rotate, the gas instrument control circuit 2 including gas instrument body 1 and be attached thereto; Gas instrument body 1 includes ring seal air chamber 11, be arranged at the magnetic seal slide block 12 in ring seal air chamber 11, P holds conductor temperature sheet 13, N to hold conductor temperature sheet 14 and two temperature sensing resistors 15a, 15b, be arranged at the gauge pointer body 16 above ring seal air chamber 11 and be fixed on gauge pointer body 16 and the gauge pointer magnetic 17 be positioned at directly over magnetic seal slide block 12; P holds between conductor temperature sheet 13 and magnetic seal slide block 12 and forms left chamber 18, N holds between conductor temperature sheet 14 and magnetic seal slide block 12 and forms right chamber 19, temperature sensing resistor 15a is placed in left chamber, temperature sensing resistor 15b is placed in right chamber, and P holds conductor temperature sheet 13 and N to hold conductor temperature sheet 14 to be electrically connected to each other;
See Fig. 2, gas instrument control circuit 2 comprises CPU, and the left chamber temperature sensor output terminal PT1 be connected with CPU respectively, right chamber temp sensor output PT2 and P hold conductor temperature sheet power input V1, the N of ground connection holds conductor temperature sheet power input V2, signal amplifier AMP1; Signal amplifier AMP includes current output terminal pin 1, controls reference voltage input terminal pin 2 and direct current signal input end pin 3, current output terminal pin 1 and P hold conductor temperature sheet power input V1 to be connected, control reference voltage input terminal pin 2 to be connected with the control reference voltage output terminal of CPU, direct current signal input end pin 3 is connected with the pwm control signal output terminal of CPU by integrating circuit; Integrating circuit includes two groups of integral unit compositions parallel with one another, and first group of integral unit includes resistance R1 and the electric capacity C2 of series connection mutually, and second group of integral unit includes resistance R2 and the electric capacity C3 of series connection mutually; Left chamber temperature sensor output terminal PT1 is electrically connected with the temperature sensing resistor 15a be arranged in left chamber, right chamber temp sensor output PT2 is electrically connected with the temperature sensing resistor 15b be arranged in right chamber, P holds conductor temperature sheet power input V1 and P to hold conductor temperature sheet 13 to be electrically connected, and N holds conductor temperature sheet power input V2 and N to hold conductor temperature sheet 14 to be electrically connected.
2, the method utilizing gas-powered gauge pointer to rotate, comprises the following steps:
(1), first export pwm control signal by the CPU of gas instrument control circuit, pwm control signal becomes direct current signal by integrating circuit AC signal, and this direct current signal entering signal amplifier compares with control reference voltage signal;
(2), when direct current signal is greater than control reference voltage signal Vref, the current output terminal of signal amplifier exports positive signal, namely direction of current can be held conductor temperature sheet to flow to P by N and hold conductor temperature sheet, according to the inherent characteristic of conductor temperature sheet, the temperature in left chamber will be made to reduce, temperature in right chamber raises, thus make gaseous tension step-down in left chamber, right chamber gas pressure inside uprises, thus magnetic seal slide block moves to left chamber, magnetic seal slide block thus drive magnetic gauge pointer to be rotated counterclockwise; When direct current signal strengthens, magnetic equipment pointer rotates counterclockwise speed and accelerates;
(3), when direct current signal is less than control reference voltage signal Vref, the current output terminal of signal amplifier exports negative signal, namely direction of current can be held conductor temperature sheet to flow to N by P and hold conductor temperature sheet, according to the inherent characteristic of conductor temperature sheet, the temperature in left chamber will be made to raise, temperature in right chamber reduces, thus gaseous tension in left chamber is uprised, right chamber gas pressure inside step-down, thus magnetic seal slide block to the right chamber move, magnetic seal slide block thus drive magnetic gauge pointer to turn clockwise; When controlling reference voltage signal Vref and strengthening, magnetic equipment pointer rotates clockwise speed and accelerates.
(4), when direct current signal equals to control reference voltage signal Vref, signal amplifier no signal exports, result magnetic gauge pointer transfixion;
(5), when left chamber and right chamber indoor temperature change generated in case, two temperature sensing resistors can gather the temperature in left chamber and right chamber respectively, then CPU is transferred to, CPU judges magnetic gauge pointer current location according to temperature acquisition value, if current location is not in error allowed band, CPU regulates pwm control signal to export further, until magnetic gauge pointer pointed location is in the scope that error specifies, CPU regulates end.
Claims (8)
1. the device utilizing gas-powered gauge pointer to rotate, is characterized in that: the gas instrument control circuit including gas instrument body He be attached thereto; Described gas instrument body includes ring seal air chamber, the magnetic seal slide block be arranged in ring seal air chamber, conductor temperature sheet and two temperature sensing resistors, to be arranged at above ring seal air chamber and magnetic gauge pointer interactional with magnetic seal slide block; Ring seal air chamber inside is divided into left chamber and right chamber by described magnetic seal slide block and conductor temperature sheet, two described temperature sensing resistors are placed in left chamber and right chamber respectively, and described conductor temperature sheet is all connected with described gas instrument control circuit with two temperature sensing resistors.
2. a kind of device utilizing gas-powered gauge pointer to rotate according to claim 1, it is characterized in that: described conductor temperature sheet includes the P be electrically connected to each other and holds conductor temperature sheet and N to hold conductor temperature sheet, described P holds between conductor temperature sheet and magnetic seal slide block and forms left chamber, and described N holds between conductor temperature sheet and magnetic seal slide block and forms right chamber;
Described gas instrument control circuit comprises CPU, and the left chamber's temperature sensor output terminal be connected with CPU respectively, right chamber temp sensor output and P hold conductor temperature sheet power input, and the N of ground connection holds conductor temperature sheet power input; Described left chamber's temperature sensor output terminal is electrically connected with the temperature sensing resistor be arranged in left chamber, described right chamber temp sensor output is electrically connected with the temperature sensing resistor be arranged in right chamber, described P holds conductor temperature sheet power input to hold conductor temperature sheet to be electrically connected with P, and described N holds conductor temperature sheet power input to hold conductor temperature sheet to be electrically connected with N.
3. a kind of device utilizing gas-powered gauge pointer to rotate according to claim 1, is characterized in that: described magnetic gauge pointer includes and is arranged at gauge pointer body above ring seal air chamber and is fixed on gauge pointer body and the gauge pointer magnetic be positioned at directly over magnetic seal slide block.
4. a kind of device utilizing gas-powered gauge pointer to rotate according to claim 2, it is characterized in that: described gas instrument control circuit also includes signal amplifier, signal amplifier includes current output terminal, control reference voltage input terminal and direct current signal input end, current output terminal and the P of described signal amplifier hold conductor temperature sheet power input to be connected, the control reference voltage input terminal of described signal amplifier is connected with the control reference voltage output terminal of CPU, the direct current signal input end of described signal amplifier is connected with the pwm control signal output terminal of CPU by integrating circuit.
5. a kind of device utilizing gas-powered gauge pointer to rotate according to claim 4, it is characterized in that: described integrating circuit includes two groups of integral unit compositions parallel with one another, described often group integral unit includes resistance and electric capacity, and resistance is connected with capacitances in series.
6. the method utilizing gas-powered gauge pointer to rotate, is characterized in that: comprise the following steps:
(1), first export pwm control signal by the CPU of gas instrument control circuit, pwm control signal becomes direct current signal by integrating circuit AC signal, and this direct current signal entering signal amplifier compares with control reference voltage signal;
(2), when direct current signal is greater than control reference voltage signal, the current output terminal of signal amplifier exports positive signal, namely direction of current can be held conductor temperature sheet to flow to P by N and hold conductor temperature sheet, according to the inherent characteristic of conductor temperature sheet, the temperature in left chamber will be made to reduce, temperature in right chamber raises, thus make gaseous tension step-down in left chamber, right chamber gas pressure inside uprises, thus magnetic seal slide block moves to left chamber, magnetic seal slide block thus drive magnetic gauge pointer to be rotated counterclockwise;
(3), when direct current signal is less than control reference voltage signal, the current output terminal of signal amplifier exports negative signal, namely direction of current can be held conductor temperature sheet to flow to N by P and hold conductor temperature sheet, according to the inherent characteristic of conductor temperature sheet, the temperature in left chamber will be made to raise, temperature in right chamber reduces, thus gaseous tension in left chamber is uprised, right chamber gas pressure inside step-down, thus magnetic seal slide block to the right chamber move, magnetic seal slide block thus drive magnetic gauge pointer to turn clockwise;
(4), when direct current signal equals to control reference voltage signal, signal amplifier no signal exports, result magnetic gauge pointer transfixion;
(5), when left chamber and right chamber indoor temperature change generated in case, two temperature sensing resistors can gather the temperature in left chamber and right chamber respectively, and be then transferred to CPU, CPU judges magnetic gauge pointer current location according to temperature acquisition value.
7. a kind of method utilizing gas-powered gauge pointer to rotate according to claim 6, it is characterized in that: when in described step (5), CPU judges magnetic gauge pointer current location, if current location is not in error allowed band, CPU regulates pwm control signal to export further, until magnetic gauge pointer pointed location is in the scope that error specifies, CPU regulates end.
8. a kind of method utilizing gas-powered gauge pointer to rotate according to claim 6, is characterized in that: when described direct current signal strengthens, magnetic equipment pointer rotates counterclockwise speed and accelerates; When described control reference voltage signal strengthens, magnetic equipment pointer rotates clockwise speed and accelerates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472497.8A CN102982851B (en) | 2012-11-21 | 2012-11-21 | Device for driving meter needle to rotate by utilizing gas and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472497.8A CN102982851B (en) | 2012-11-21 | 2012-11-21 | Device for driving meter needle to rotate by utilizing gas and driving method thereof |
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| Publication Number | Publication Date |
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| CN102982851A CN102982851A (en) | 2013-03-20 |
| CN102982851B true CN102982851B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210472497.8A Active CN102982851B (en) | 2012-11-21 | 2012-11-21 | Device for driving meter needle to rotate by utilizing gas and driving method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2926260A1 (en) * | 1979-06-29 | 1981-01-08 | Bbc Brown Boveri & Cie | Gas density monitor for gas filled HV switchgear - has bourdon tube enclosed in gas to operate indicator |
| CN201016826Y (en) * | 2007-03-13 | 2008-02-06 | 孙保定 | Gas pressure gauge |
| CN101216334A (en) * | 2008-01-02 | 2008-07-09 | 湖南九天科技有限公司 | Multifunctional atmospheric pressure altitude instrument |
| CN201464104U (en) * | 2009-05-15 | 2010-05-12 | 胡书彬 | Composite gas gauge |
| CN202917183U (en) * | 2012-11-21 | 2013-05-01 | 合肥创源车辆控制技术有限公司 | Device driving instrument indicator to rotate by utilizing gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04113225A (en) * | 1990-09-03 | 1992-04-14 | Nissan Motor Co Ltd | Display device for vehicle |
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2012
- 2012-11-21 CN CN201210472497.8A patent/CN102982851B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2926260A1 (en) * | 1979-06-29 | 1981-01-08 | Bbc Brown Boveri & Cie | Gas density monitor for gas filled HV switchgear - has bourdon tube enclosed in gas to operate indicator |
| CN201016826Y (en) * | 2007-03-13 | 2008-02-06 | 孙保定 | Gas pressure gauge |
| CN101216334A (en) * | 2008-01-02 | 2008-07-09 | 湖南九天科技有限公司 | Multifunctional atmospheric pressure altitude instrument |
| CN201464104U (en) * | 2009-05-15 | 2010-05-12 | 胡书彬 | Composite gas gauge |
| CN202917183U (en) * | 2012-11-21 | 2013-05-01 | 合肥创源车辆控制技术有限公司 | Device driving instrument indicator to rotate by utilizing gas |
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| CN102982851A (en) | 2013-03-20 |
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