CN101216334A - Multifunctional atmospheric pressure altitude instrument - Google Patents
Multifunctional atmospheric pressure altitude instrument Download PDFInfo
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- CN101216334A CN101216334A CNA2008100304069A CN200810030406A CN101216334A CN 101216334 A CN101216334 A CN 101216334A CN A2008100304069 A CNA2008100304069 A CN A2008100304069A CN 200810030406 A CN200810030406 A CN 200810030406A CN 101216334 A CN101216334 A CN 101216334A
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Abstract
The invention discloses a multifunctional atmospheric pressure and sea-level height meter, which comprises a single chip microcomputer, an atmospheric pressure signal collection and conditioning circuit, a digital temperature sensor, a micro-stepping motor, an atmospheric pressure pointer installed on the rotating shaft of the micro-stepping motor, and an index dial, wherein the atmospheric pressure pointer is driven by the micro-stepping motor to indicate atmospheric pressure and sea-level height, and the index marks of the atmospheric pressure and the sea-level height are provided on the index dial. The invention has good shock resistance and high precision; more importantly, the invention has good function expansibility, can not only measure the atmospheric pressure and the sea-level height, but also can add the functions of temperature measurement and orientation indication, so as to well satisfy the requirements of uses and facilitate the service.
Description
Technical field
The present invention relates to the multifunctional atmospheric pressure altitude instrument in a kind of measures ambient temperature simultaneously, atmospheric pressure, sea level elevation and indication orientation.
Background technology
Traditional atmospheric pressure electronic watch and electronics height above sea level kilsyth basalt adopt mechanical type bellows mechanism basically, the bellows force sensing element of measured medium pressure by moving perpendicular to flexible orientation, allow its free end produce corresponding elastic deformation displacement, after driving lever drives the gear train amplification, will on panel board, be indicated by measuring pressure by indicating device.This accuracy of instrument is low, and poor seismic behavior is subject to the influence of ground and temperature, humidity, can't be competent on automobile and a lot of other vigorous exercise occasions, and the more important thing is can not expanded function.Such as can not measures ambient temperature, can not equally indicate the orientation to compass because function singleness, these all are that the user has brought inconvenience.
Summary of the invention
The object of the present invention is to provide a kind of precision height, shock resistance good, and can extended temperature measure, the multifunctional atmospheric pressure altitude instrument of orientation deixis.
This multifunctional atmospheric pressure altitude instrument provided by the invention, comprise single-chip microcomputer, atmospheric pressure signal collection modulation circuit, digital temperature sensor, micro-step motor, be installed in the air pressure pointer in the micro-step motor rotating shaft, dial plate, wherein atmospheric pressure signal collection modulation circuit mainly is made up of barometric pressure sensor and operational amplifier, barometric pressure sensor is delivered to operational amplifier with the signal that is collected and is amplified, shaping, the I/O mouth of delivering to single-chip microcomputer again carries out the A/D conversion, digital filtering, single-chip microcomputer directly reads the temperature data of digital temperature sensor simultaneously, and to the compensation of tabling look-up of the atmospheric pressure signal under this temperature value, obtain corresponding sea level elevation value by compensation value calculation, convert rotational pulse signal again to and drive micro-step motor, drive the air pressure pointer by this micro-step motor, indication atmospheric pressure and sea level elevation, the scale of atmospheric pressure and sea level elevation is located on the dial plate.
In order to expand the orientation deixis, the present invention also comprises magnetoresistance signal acquisition and conditioning circuit, orientation pointer, drives the micro-step motor of orientation pointer, the magnetoresistance signal acquisition and conditioning circuit mainly is made up of magnetoresistive transducer and operational amplifier, described magnetoresistive transducer is delivered to the signal that is collected that operational amplifier amplifies, shaping, deliver to the single-chip processor i/o mouth again and carry out the A/D conversion, handle the rear drive micro-step motor through digital filtering, drive the orientation pointer by this micro-step motor and rotate the indication orientation, azimuth scale is located on the dial plate.
In order to expand the measures ambient temperature function, the present invention also comprises the micro-step motor of temperature pointer, actuation temperature pointer, on the described dial plate temperature scale is arranged, single-chip microcomputer will convert rotational pulse signal to and drive described micro-step motor from the temperature data that digital temperature sensor directly reads, this micro-step motor drives temperature pointer and rotates, the indicative for environments temperature.
The present invention since with single-chip microcomputer as kernel control chip, driving lever, hairspring and the linkage magnification system of no any traditional mechanical type instrument on the structure, and the present invention utilizes digital temperature sensor to detect current ambient temperature data, with the nuance of the atmospheric pressure under the compensation condition of different temperatures, measure atmospheric pressure value and sea level elevation value accurately.Therefore not only shock resistance is good but also precision is very high in the present invention, the more important thing is that the present invention has good function expansibility, can not only survey atmospheric pressure, sea level elevation, can also increase the function of measuring temperature, indication orientation as required, thereby satisfy people's requirement well, very easy to use.
Description of drawings
Fig. 1 is the circuit diagram of first kind of embodiment of the present invention.
Fig. 2 is the dial plate synoptic diagram of corresponding diagram 1.
Fig. 3 is the circuit diagram of second kind of embodiment of the present invention.
Fig. 4 is the synoptic diagram of dial plate in second kind of embodiment.
Fig. 5 is the circuit diagram of the third embodiment of the present invention.
The synoptic diagram of dial plate in the third embodiment of Fig. 6.
Fig. 7 is the circuit diagram of the 4th kind of embodiment of the present invention.
Fig. 8 is the synoptic diagram of dial plate in the 4th kind of embodiment.
Embodiment
Embodiment one: referring to Fig. 1-Fig. 2.
It is one that present embodiment is melted four functions, and described four functions are: measure atmospheric pressure, sea level elevation, indication orientation, measure temperature.
From Fig. 1-Fig. 2 as can be seen this embodiment comprise single-chip microcomputer 1, atmospheric pressure signal collection modulation circuit 2, magnetoresistance signal acquisition and conditioning circuit 3, digital temperature sensor 4, air pressure pointer 5, orientation pointer 6, temperature pointer 7,8, three micro-step motors of dial plate (9-11).Wherein atmospheric pressure signal collection modulation circuit 2 mainly is made up of barometric pressure sensor 21 and operational amplifier 22, magnetoresistance signal acquisition and conditioning circuit 3 is mainly by magnetoresistive transducer 31 and 32 one-tenth of operational amplifier groups, on the dial plate 8 corresponding to the scale that atmospheric pressure and sea level elevation are arranged (outer ring is the atmospheric pressure scale, and inner ring is the sea level elevation scale) of air pressure pointer 5, corresponding to orientation pointer 6 azimuth scale is arranged, corresponding to the temperature scale that has of temperature pointer 7.
Three stepper motors (9-11) adopt two-phase six to clap the automobile instrument movement with stepper motor (as VID28 series), are respectively applied for and drive air pressure pointer 5, orientation pointer 6, temperature pointer 7.Single-chip microcomputer 1 adopts the band A/D converter, and that present embodiment adopts as shown in the figure is PIC16F874.Barometric pressure sensor 21 adopts the baroceptor NPX Sensor NPP-301-100 of U.S. GE company, its inner Hui Sidun bridge circuit of forming, QW is the balance resistance of both sides brachium pontis, and its operating temperature range reaches-40 ℃-+125 ℃, can provide 100,200 and the absolute pressure range of 700Kpa.NPP series silicon pressure sensor is surface-pasted silicon pressure sensor, and it adopts the extra small pressure drag chip of silicon-silicon fusion techniques and high stability to seal up for safekeeping in plastic housing.The integrated circuit pin structure that NPP series is adopted is well suited for being installed in narrow and small occasion.NPP series pressure transducer is to produce a voltage signal that is directly proportional with extraneous input pressure under the constant voltage power supply, and the user can amplify or increase its added value to reach the demand of self product by circuit for signal conditioning to it.Magnetoresistive transducer 31 adopts the two-dimentional magnetoresistive transducer HMC1022 of U.S. Honeywell Inc., there are two corresponding X-axis of difference and responsive orientation of Y-axis and mutually perpendicular magnetoresistive bridge in its inside, faint terrestrial magnetic field can be converted to the voltage signal of differential output, and after the signal collection modulation processing of circuit, send microprocessor (CPU) to carry out the A/D conversion voltage signal.The characteristics of this magnetoresistive transducer are: 1. sensitivity is 1mV/V/ Gauss; 2. wideer magnetic field range: ± 6 Gausses (terrestrial magnetic field is 0.5 Gauss), minimum detectable 85 microgasusses' magnetic field; 3. low-cost, small size: compare with fluxgate sensor, the sensor of these small sizes has reduced the assembly cost of wiring board, has increased reliability and firm degree; 4. low-power consumption, power supply are 3～10VDC.5. the set/reset circuit is simple, need not bias compensation circuit (unless accuracy requirement is high especially), and output is very perfect.The special high-accuracy instrument three amplifier AD620 that operational amplifier (22,32) in barometric pressure sensor signal collection modulation circuit 2 and the magnetoresistive transducer signal collection modulation circuit 3 selects for use the research and development of ADI company to produce.AD620 is by 3 difference instrumentation amplifiers that accurate amplifier is integrated, has the characteristics of low skew, high-gain (signal can directly be amplified to 1000 times), high conjugated analoging systeming ratio, is specially adapted to the amplification sensor signal.Adjustable resistance GW1 and GW2 are used to nurse one's health the gain adjustment of operational amplifier, maximum gain setting range 1～1000.
The operational amplifier 22 that barometric pressure sensor 21 is delivered to the signal that is collected in the atmospheric pressure signal collection modulation circuit amplifies, shaping, the I/O mouth of delivering to single-chip microcomputer 1 again carries out the A/D conversion, digital filtering, single-chip microcomputer 1 directly reads the temperature data of digital temperature sensor 4 by the RA2 mouth simultaneously, and to the compensation of tabling look-up of the atmospheric pressure signal under this temperature value, obtain corresponding sea level elevation value by compensation value calculation, convert rotational pulse signal again to and drive micro-step motor 9, driving air pressure pointer 5 by this micro-step motor rotates, when certain value of atmospheric pressure and sea level elevation scale stops on pointing to dial plate, i.e. indication be here and now atmospheric pressure and sea level elevation.
The signal that digital temperature sensor 4 collects is directly read by single-chip microcomputer 1, single-chip microcomputer 1 converts temperature data to rotational pulse signal and drives described micro-step motor 11, driving temperature pointer 7 by this micro-step motor rotates, when forwarding certain position to and stop, promptly indication is the temperature of this surrounding environment, and its resolving accuracy can reach 0.0625 ℃.
Embodiment two: referring to Fig. 3-Fig. 4.
This is a kind ofly can survey atmospheric pressure/sea level elevation, and the embodiment in indication orientation, compares with embodiment one and has lacked a function of measuring temperature.
As can be seen from Figure 3, compared to Figure 1 except lacking a micro-step motor 11 that is used for the actuation temperature pointer, other and Fig. 1 are just the same.
Do not had temperature pointer 7 on the dial plate of present embodiment as can be seen from Figure 4, also do not had temperature scale, other is the same with Fig. 2.Therefore except that indicated temperature not, other is the same with embodiment one.
Therefore 1 of present embodiment single-chip microcomputer drives micro-step motor 9 and micro-step motor 10, drives air pressure pointer 5 and orientation pointer 7 respectively by these two motors, and its principle of work is identical with embodiment one.
Embodiment three: referring to Fig. 5-Fig. 6.
This is a kind ofly can survey the embodiment that atmospheric pressure/sea level elevation can be surveyed environment temperature again.Compare the function of having lacked an indication orientation with embodiment one.
As can be seen from Figure 5, the micro-step motor that has compared to Figure 1 lacked the magnetoresistance signal acquisition and conditioning circuit and driven the orientation pointer, other and Fig. 1 are just the same.
Do not had the orientation pointer as can be seen from Figure 6 on the dial plate, do not had azimuth scale yet.Other is the same with Fig. 2.
Therefore 1 of the single-chip microcomputer of present embodiment drives micro-step motor 9 and micro-step motor 11, drives air pressure pointer 5 and temperature pointer 7 respectively by these two motors, and its principle of work is identical with embodiment one.
Embodiment four: referring to Fig. 8-Fig. 9.
This is a kind of example that can only survey atmospheric pressure/sea level elevation.
As can be seen from Figure 7, compared to Figure 1 lack the micro-step motor of magnetoresistance signal acquisition and conditioning circuit and driving orientation pointer, also lacked the micro-step motor that is used for the actuation temperature pointer.
As can be seen from Figure 8, compare the scale and the air pressure pointer of only remaining atmospheric pressure and sea level elevation on the dial plate with Fig. 2, only be used to measure atmospheric pressure and sea level elevation.
Above-mentioned four kinds of embodiments, the user can suitably select according to the concrete condition of oneself.
Claims (5)
1. multifunctional atmospheric pressure altitude instrument, it is characterized in that comprising single-chip microcomputer (1), atmospheric pressure signal collection modulation circuit (2), digital temperature sensor (4), micro-step motor (9), be installed in the air pressure pointer (5) in the micro-step motor rotating shaft, dial plate (8), wherein atmospheric pressure signal collection modulation circuit (2) mainly is made up of barometric pressure sensor (21) and operational amplifier (22), barometric pressure sensor (21) is delivered to operational amplifier (22) with the signal that is collected and is amplified, shaping, the I/O mouth of delivering to single-chip microcomputer (1) again carries out the A/D conversion, digital filtering, single-chip microcomputer (1) directly reads the temperature data of digital temperature sensor simultaneously, and to the compensation of tabling look-up of the atmospheric pressure signal under this temperature value, obtain corresponding sea level elevation value by compensation value calculation, convert rotational pulse signal again to and drive micro-step motor (9), drive air pressure pointer (5) by this micro-step motor, indication atmospheric pressure and sea level elevation, the scale of atmospheric pressure and sea level elevation is located on the dial plate (8).
2. multifunctional atmospheric pressure altitude instrument according to claim 1, it is characterized in that comprising magnetoresistance signal acquisition and conditioning circuit (3), orientation pointer (6), drive the micro-step motor (10) of orientation pointer, magnetoresistance signal acquisition and conditioning circuit (3) mainly is made up of magnetoresistive transducer (31) and operational amplifier (32), described magnetoresistive transducer is delivered to operational amplifier (32) with the signal that is collected and is amplified, shaping, deliver to single-chip microcomputer (1) I/O mouth again and carry out the A/D conversion, handle rear drive micro-step motor (10) through digital filtering, drive the orientation pointer by this micro-step motor and rotate the indication orientation, azimuth scale is located on the dial plate (8).
3. according to claim 1 or the described multifunctional atmospheric pressure altitude instrument of claim 2, it is characterized in that also comprising the micro-step motor (11) of temperature pointer (7), actuation temperature pointer, on the described dial plate temperature scale is arranged, single-chip microcomputer (1) will convert rotational pulse signal from the temperature data that directly read digital temperature sensor (4) to and drive micro-step motor (11), this micro-step motor drives temperature pointer (7) and rotates, the indicative for environments temperature.
4. multifunctional atmospheric pressure measurement instrument according to claim 1 and 2 is characterized in that described micro-step motor is the two-phase six bat stepper motors of automobile instrument movement special use.
5. multifunctional atmospheric pressure measurement instrument according to claim 3 is characterized in that described micro-step motor is the two-phase six bat stepper motors of automobile instrument movement special use.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100304069A CN101216334A (en) | 2008-01-02 | 2008-01-02 | Multifunctional atmospheric pressure altitude instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100304069A CN101216334A (en) | 2008-01-02 | 2008-01-02 | Multifunctional atmospheric pressure altitude instrument |
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| CN101216334A true CN101216334A (en) | 2008-07-09 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706271A (en) * | 2009-10-13 | 2010-05-12 | 浙江天鸿汽车用品有限公司 | Vehicle-mounted multifunctional altitudinal instrument |
| CN102175215A (en) * | 2011-02-24 | 2011-09-07 | 上海德科电子仪表有限公司 | Vehicle-mounted altitude monitoring device and method |
| CN102411850A (en) * | 2011-08-01 | 2012-04-11 | 四川九洲电器集团有限责任公司 | Data conversion system based on atmosphere height analog signal of airplane carrying platform |
| CN102982851A (en) * | 2012-11-21 | 2013-03-20 | 合肥创源车辆控制技术有限公司 | Device for driving meter needle to rotate by utilizing gas and driving method thereof |
| CN103932691A (en) * | 2014-05-04 | 2014-07-23 | 江苏物联网研究发展中心 | Electronic sphygmomanometer suitable for region at any altitude |
| CN108825210A (en) * | 2018-05-23 | 2018-11-16 | 大庆市亿动科技有限公司 | Integrated telemetering indicator based on baroceptor |
| CN114136532A (en) * | 2021-12-07 | 2022-03-04 | 西南交通大学 | Pressure test fixture suitable for high-altitude environment |
-
2008
- 2008-01-02 CN CNA2008100304069A patent/CN101216334A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706271A (en) * | 2009-10-13 | 2010-05-12 | 浙江天鸿汽车用品有限公司 | Vehicle-mounted multifunctional altitudinal instrument |
| CN102175215A (en) * | 2011-02-24 | 2011-09-07 | 上海德科电子仪表有限公司 | Vehicle-mounted altitude monitoring device and method |
| CN102411850A (en) * | 2011-08-01 | 2012-04-11 | 四川九洲电器集团有限责任公司 | Data conversion system based on atmosphere height analog signal of airplane carrying platform |
| CN102411850B (en) * | 2011-08-01 | 2015-04-22 | 四川九洲空管科技有限责任公司 | Data conversion system based on atmosphere height analog signal of airplane carrying platform |
| CN102982851A (en) * | 2012-11-21 | 2013-03-20 | 合肥创源车辆控制技术有限公司 | Device for driving meter needle to rotate by utilizing gas and driving method thereof |
| CN102982851B (en) * | 2012-11-21 | 2015-04-08 | 合肥创源车辆控制技术有限公司 | Device for driving meter needle to rotate by utilizing gas and driving method thereof |
| CN103932691A (en) * | 2014-05-04 | 2014-07-23 | 江苏物联网研究发展中心 | Electronic sphygmomanometer suitable for region at any altitude |
| CN108825210A (en) * | 2018-05-23 | 2018-11-16 | 大庆市亿动科技有限公司 | Integrated telemetering indicator based on baroceptor |
| CN114136532A (en) * | 2021-12-07 | 2022-03-04 | 西南交通大学 | Pressure test fixture suitable for high-altitude environment |
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Open date: 20080709 |