CN204963869U - MEMS attitude sensor based on thermoelectric generation - Google Patents
MEMS attitude sensor based on thermoelectric generation Download PDFInfo
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- CN204963869U CN204963869U CN201520595081.4U CN201520595081U CN204963869U CN 204963869 U CN204963869 U CN 204963869U CN 201520595081 U CN201520595081 U CN 201520595081U CN 204963869 U CN204963869 U CN 204963869U
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Abstract
The utility model discloses a MEMS attitude sensor based on thermoelectric generation contains gesture detection module, temperature detection module, temperature compensating module, analog -to -digital conversion module, microcontroller module, display module and power module, gesture detection module and temperature detection module connect the microcontroller module through temperature compensating module, the analog -to -digital conversion module who connects gradually respectively, the display module is connected on the corresponding port of microcontroller module, power module contains thermoelectricity ability collector, the power energy management circuit that connects gradually, the power management circuit contains MPPT module, electric energy output interface, boost circuit and energy buffer, the output of MPPT module connect the electric energy output interface the input boost circuit's input is connected to the output of electric energy output interface, the input of energy buffer is connected to boost circuit's output, power module is connected with gesture detection module, temperature detection module, temperature compensating module, analog -to -digital conversion module, microcontroller module and display module respectively.
Description
Technical field
The utility model relates to a kind of attitude sensor, particularly relates to a kind of MEMS attitude sensor based on thermo-electric generation, belongs to sensor control field.
Background technology
Traditional attitude measurement system adopts Methods of Strapdown Inertial Navigation System (SINS), compare Platform INS Inertial, it is relatively less that it has volume, cost is relatively lower, be easy to installation and maintenance and reliability is a little higher, therefore, strapdown inertial navitation system (SINS) obtains investigation and application widely in aircraft navigation and attitude measurement.
But traditional attitude measurement system comprises strapdown inertia and generally has volume greatly, and weight is large, and complexity high, makes traditional attitude measurement system to be applied to daily use.Meanwhile, traditional strapdown inertial navitation system (SINS) generally needs the auxiliary position angle obtaining carrier of a north-seeking system, but traditional north-seeking system mostly is the system based on gyro, and its volume and complexity are also that daily use institute is unacceptable.Visible, for embedded system volume to strict restriction, need a kind of small-sized attitude measurement system of development to meet the requirement of its attitude measurement.The fast development of MEMS technology and MR technology, for developing this low cost, small size, the attitude measurement system of high integration provides possibility, thus can make the ability system of volume and cost sensitivity to attitude measurement.
Along with MEMS (micro electro mechanical system) (MEMS) technology is on miniaturization technologies basis, combine the development of the forward position scientific research field that the multiple subject crossing such as electronics, machinery, material merges with ripe, thus there is a lot of sensor based on MEMS technology, sensors with auxiliary electrode has that volume is little, lightweight, low-power consumption, the advantage such as multi-functional, be widely applied in the industries such as electronic product, Aero-Space, mechanical chemical industry.
The temperature compensation of sensor roughly can be divided into two kinds, i.e. hardware compensating and software compensation.Hardware compensating method mainly changes circuit to reach compensation effect, but this method can cause the complicated of circuit, improves cost simultaneously.Software compensation method mainly contains least square method, BP neural network, the Return Law etc.From the convenience of calculating and accuracy two aspects of compensation precision, least square method is taked to carry out temperature compensation herein.
Utility model content
Technical problem to be solved in the utility model provides a kind of MEMS attitude sensor with temperature compensation for the deficiency of background technology.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of MEMS attitude sensor with temperature compensation, comprise attitude detection module, temperature detecting module, temperature compensation module, analog-to-digital conversion module, micro controller module, display module and power module, described attitude detection module and temperature detecting module are respectively by the temperature compensation module be connected successively, analog-to-digital conversion module connects micro controller module, described display module is connected on the corresponding port of micro controller module, described power module respectively with attitude detection module, temperature detecting module, temperature compensation module, analog-to-digital conversion module, micro controller module is connected with display module.
As the further preferred version of a kind of MEMS attitude sensor based on thermo-electric generation of the utility model, described micro controller module adopts AVR series monolithic.
As the further preferred version of a kind of MEMS attitude sensor based on thermo-electric generation of the utility model, the chip model of described temperature detecting module is DS18B20.
As the further preferred version of a kind of MEMS attitude sensor based on thermo-electric generation of the utility model, the chip model of described analog to digital converter is TMS320LF240.
As the further preferred version of a kind of MEMS attitude sensor based on thermo-electric generation of the utility model, described display module adopts LCD display.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
1, little, lightweight, the low-power consumption of the utility model volume, multi-functional;
2, the utility model sensor is according to the detection signal of input, related data is gathered by attitude detection module and temperature detecting module, then carry out corresponding temperature compensation through temperature compensation module, the detection signal that can obtain expecting finally by output detections module is effectively eliminated or is reduced and varies with temperature and the error that causes.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
As shown in Figure 1, a kind of MEMS attitude sensor with temperature compensation, comprise attitude detection module, temperature detecting module, temperature compensation module, analog-to-digital conversion module, micro controller module, display module and power module, described attitude detection module and temperature detecting module are respectively by the temperature compensation module be connected successively, analog-to-digital conversion module connects micro controller module, described display module is connected on the corresponding port of micro controller module, described power module respectively with attitude detection module, temperature detecting module, temperature compensation module, analog-to-digital conversion module, micro controller module is connected with display module.
Wherein, described micro controller module adopts AVR series monolithic, and the chip model of described temperature detecting module is DS18B20.The chip model of described analog to digital converter is TMS320LF240, and described display module adopts LCD display.
The ITG-3205 three-axis gyroscope chip that the utility model adopts American I nvenSense company to produce, is embedded with digital output temperature sensor in this chip, therefore can detects the environment temperature residing for sensor at any time.Under different operating ambient temperatures, sensor actual angle output valve and point of theory output valve there will be certain error, are referred to as temperature error.In order to eliminate or reduce this temperature error, utilize least square method to carry out curve fitting, finally to reach or close to point of theory output valve.
Sensor, according to the detection signal of input, gathers related data by attitude detection module and temperature detecting module, then carries out corresponding temperature compensation through temperature compensation module, can obtain the detection signal of expecting finally by output detections module.
The computing method that the utility model relates to all belong to those skilled in the art's common practise, do not belong to protection domain of the present utility model.At the same temperature, between the theoretical value of different angles and output valve, stricti jurise is a kind of nonlinear relationship, but due to this error amount relatively little, what can be similar to thinks a kind of linear relationship, i.e. the linear relationship of y=mx+n.Carry out linear fit by least square method, the value of parameter m and n can be drawn.
Now can find, at different temperature, institute's matching m and n value is out variation with temperature and changes.In the case, the relation of temperature respectively and between m and n must be found out, again can carry out curve fitting according to least square method equally for this reason, thus draw the relation between m value and temperature.In like manner also can draw the relation between n and temperature.After twice curve, can show that the error between theoretical value and output valve has had obvious reduction, and meet the requirement of expection.In actual applications, in order to reach the requirement of high precision test, the method that can carry out curve fitting by measuring multi-group data realizes.
In sum, the utility model only protects annexation between hardware and one-piece construction, does not protect the specific algorithm involved by hardware, above display and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the MEMS attitude sensor based on thermo-electric generation, it is characterized in that: comprise attitude detection module, temperature detecting module, temperature compensation module, analog-to-digital conversion module, micro controller module, display module and power module, described attitude detection module and temperature detecting module are respectively by the temperature compensation module be connected successively, analog-to-digital conversion module connects micro controller module, described display module is connected on the corresponding port of micro controller module, described power module comprises the temperature difference power collector connected successively, power supply energy management circuit, described power management circuit comprises MPPT module, electric energy output interface, booster circuit and energy buffer, the input end that the output terminal of described MPPT module connects the input end of electric energy output interface, the output terminal of described electric energy output interface connects booster circuit, the output terminal of described booster circuit connects the input end of energy buffer, described power module is connected with attitude detection module, temperature detecting module, temperature compensation module, analog-to-digital conversion module, micro controller module and display module respectively.
2. a kind of MEMS attitude sensor based on thermo-electric generation according to claim 1, is characterized in that: described micro controller module adopts AVR series monolithic.
3. a kind of MEMS attitude sensor based on thermo-electric generation according to claim 1, is characterized in that: the chip model of described temperature detecting module is DS18B20.
4. a kind of MEMS attitude sensor based on thermo-electric generation according to claim 1, is characterized in that: the chip model of described analog to digital converter is TMS320LF240.
5. a kind of MEMS attitude sensor based on thermo-electric generation according to claim 1, is characterized in that: described display module adopts LCD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520595081.4U CN204963869U (en) | 2015-08-08 | 2015-08-08 | MEMS attitude sensor based on thermoelectric generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520595081.4U CN204963869U (en) | 2015-08-08 | 2015-08-08 | MEMS attitude sensor based on thermoelectric generation |
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| Publication Number | Publication Date |
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| CN204963869U true CN204963869U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520595081.4U Expired - Fee Related CN204963869U (en) | 2015-08-08 | 2015-08-08 | MEMS attitude sensor based on thermoelectric generation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114879807A (en) * | 2022-06-14 | 2022-08-09 | 北京理工大学 | Method for tracking maximum power point of thermoelectric generation under temperature transient change |
-
2015
- 2015-08-08 CN CN201520595081.4U patent/CN204963869U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114879807A (en) * | 2022-06-14 | 2022-08-09 | 北京理工大学 | Method for tracking maximum power point of thermoelectric generation under temperature transient change |
| CN114879807B (en) * | 2022-06-14 | 2023-02-03 | 北京理工大学 | Method for tracking maximum power point of thermoelectric generation under temperature transient change |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160808 |