CN203116750U - Posture sensor - Google Patents
Posture sensor Download PDFInfo
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- CN203116750U CN203116750U CN 201320113373 CN201320113373U CN203116750U CN 203116750 U CN203116750 U CN 203116750U CN 201320113373 CN201320113373 CN 201320113373 CN 201320113373 U CN201320113373 U CN 201320113373U CN 203116750 U CN203116750 U CN 203116750U
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Abstract
The utility model relates to a posture sensor. A sensing mechanism of the posture sensor is based on heat exchange of natural convection gas inside a sensitive element and a thermistor, so that variation of environmental temperature causes temperature drift of sensitivity of the sensor. The posture sensor provided by the utility model is provided with angle sensors, a sensor power source and a central processing unit, wherein the sensor power source is connected with a 5V voltage stabilizer and a heating module through a direct-current power filter; one path of current of the 5V voltage stabilizer is input into the central processing unit through a 3.3V voltage stabilizer, and the other path of the current of the 5V voltage stabilizer is input into the two vertical angle sensors; signals are input into the central processing unit after being filtered; and a deviation value output by the central processing unit is sent to an upper computer through a CAN (Controller Area Network) controller and a CAN isolation transceiver module. The posture sensor provided by the utility model is provided with the heating module in a posture sensor circuitfor carrying out constant-temperature protection onthe two vertical angle sensors; the temperature variation influence can be effectively corrected; the sensitivity of the angle sensors can be ensured; and the detection precision of the posture sensor is improved.
Description
Technical field
The utility model relates to a kind of attitude sensor.
Background technology
Attitude sensor, finger can be experienced object attitude (axis is to the locus of gravity coordinate system) and convert the sensor of usable output signal to, its sensitive mechanism is based on the interior natural convection gas of responsive original paper and the exchange heat of thermistor, therefore, the variation of environment temperature can cause the redistribution in temperature field in the responsive original paper, causes detecting the fluctuation of bridge output voltage and the temperature drift of transducer sensitivity.The serviceability temperature sensor carries out the measurement of temperature in the attitude sensor that has, and draws the attitude result by compensation value calculation.This method is subject to choosing of offset, and certain error is arranged.Obliquity sensor directly uses filtered supply voltage in the present attitude sensor circuit, if supply voltage produces fluctuation, then can not guarantee the accuracy of measurement of attitude sensor.
Summary of the invention
Thereby the purpose of this utility model provides a kind of attitude sensor that utilizes heating module angular transducer to be carried out constant temperature protection Tc variable effect; guarantee that obliquity sensor uses identical voltage reference with A/D converter, guarantee that measured value is not subjected to the influence of mains fluctuations.
The technical scheme that the utility model adopts is:
A kind of attitude sensor is provided with angular transducer, probe power and central processing unit, it is characterized in that:
Described probe power links to each other with heating module with the 5V voltage stabilizer by DC wave filter;
The electric current of 5V voltage stabilizer is leaded up to 3.3V voltage stabilizer input central processing unit, another road input two angular transducers parallel with one another, the signal of two angular transducers is through two difference input channels of input central processing unit behind the digital filtering of passive filter;
Two angular transducers are respectively directions X obliquity sensor and Y-direction obliquity sensor, are vertically mounted on the circuit board mutually;
The deviate of central processing unit output is isolated transceiver module by CAN controller and CAN and is delivered to host computer.
Described central processing unit is mixed signal ISP microcontroller, is connected with parameter register on it.
It is single-chip microcomputer operating voltage 3.3V circuit that 9,10 pins in the described mixed signal ISP microcontroller connect, and 31,32 pins connect for producing reference voltage ++ the reference circuit of 5V, 12 connect reset circuit.
Described CAN controller is isolated transceiver module with CAN and is linked to each other by the reading and writing pin.
Described directions X obliquity sensor links to each other with OUT2 by OUT1 with passive filter, and the directions X obliquity sensor obtains reference voltage by 6,7,12 pins ++ 5V;
Described Y-direction obliquity sensor links to each other with OUT2 by OUT1 with passive filter, and the Y-direction obliquity sensor obtains reference voltage by 6,7,12 pins ++ 5V;
Described passive filter is made up of polar capacitor, a polarity free capacitor by 6.
Described heating module is constant-temperature circuit, comprise 1 temperature sensor, triode as well heater heat, an operational amplifier, R16 and R15 carry out the equivalent dividing potential drop, obtain voltage reference;
Operational amplifier compares the magnitude of voltage of 1 and 3 pins, when 3 pin values are higher, and circuit turn-on, triode heats as well heater; If electric current is too big, the magnitude of voltage that makes R18 is during greater than PN junction voltage, and then triode is shunted;
Maximum current in the R19 resistance limits circuit makes it be no more than the maximum output current value of operational amplifier;
The integrating circuit that R17 and C1 form postpones signal, and clutter is filtered.
The utlity model has following advantage:
The utility model is provided with heating module two orthogonal angular transducers is carried out the constant temperature protection in the attitude sensor circuit, effectively the Tc variable effect has guaranteed the sensitivity of angular transducer, has improved the accuracy of detection of attitude sensor.A/D converter of the present utility model and sensor use same voltage reference.Because the variation of external temperature, time etc., the supply voltage size of input may change a lot.Because the supply voltage of voltage reference and input is linear, A/D converter conversion figure place is constant, so same benchmark can guarantee that the transfer admittance of A/D converter is constant, the accuracy of measurement of sensor is constant.
Description of drawings
Fig. 1 is attitude sensor circuit working theory diagram.
Fig. 2 is mixed signal ISP microcontroller connection layout.
Fig. 3 is CAN controller connection layout.
Fig. 4 is the directions X obliquity sensor.
Fig. 5 is the Y-direction obliquity sensor.
Fig. 6 is heater circuit.
Fig. 7 is the attitude sensor circuit connection diagram.
Embodiment
Below in conjunction with embodiment the utility model is described in detail.
Referring to Fig. 1 and Fig. 7, a kind of attitude sensor that the utility model is related, be provided with angular transducer, probe power and central processing unit, probe power links to each other with heating module with the 5V voltage stabilizer by DC wave filter, probe power links to each other with the DC wave filter wave filter, can prevent two-way interference.The reference power supply of probe power and A/D converter is identical, all for by the power supply signal after the voltage stabilizing of 5V voltage stabilizer.The electric current of 5V voltage stabilizer is leaded up to 3.3V voltage stabilizer input central processing unit, eliminates voltage fluctuation; Another road input two angular transducers parallel with one another, these two angular transducers are respectively directions X obliquity sensor and Y-direction obliquity sensor, are vertically mounted on the circuit board mutually.The signal of two angular transducers is through two difference input channels of input central processing unit behind the digital filtering of passive filter.When the testee position changes, when angled with horizontal line, two angular transducer inspected object and horizontal misalignment angle flow to central processing unit with this angle value.Central processing unit carries out digital filtering with the signal of two angular transducers, and utilizes the root mean square algorithm process, multiply by the deviate that related coefficient obtains attitude again.The deviate of central processing unit output is isolated transceiver module by CAN controller and CAN and is delivered to host computer.
Central processing unit is mixed signal ISP microcontroller, is connected with parameter register on it.
Referring to Fig. 2, it is single-chip microcomputer operating voltage 3.3V circuit that 9,10 pins in the mixed signal ISP microcontroller connect, and 31,32 pins connect for producing reference voltage ++ the reference circuit of 5V, 12 connect reset circuit.
Referring to Fig. 3, the CAN controller is isolated transceiver module with CAN and is linked to each other by the reading and writing pin.
Referring to Fig. 4 and Fig. 5, the directions X obliquity sensor links to each other with OUT2 by OUT1 with passive filter, and the directions X obliquity sensor obtains reference voltage by 6,7,12 pins ++ 5V; The Y-direction obliquity sensor links to each other with OUT2 by OUT1 with passive filter, and the Y-direction obliquity sensor obtains reference voltage by 6,7,12 pins ++ 5V; Passive filter is made up of polar capacitor, a polarity free capacitor by 6.
Referring to Fig. 6, heating module is constant-temperature circuit, comprise 1 temperature sensor, triode as well heater heat, an operational amplifier, R16 and R15 carry out the equivalent dividing potential drop, obtain voltage reference; Operational amplifier compares the magnitude of voltage of 1 and 3 pins, when 3 pin values are higher, and circuit turn-on, triode heats as well heater; If electric current is too big, the magnitude of voltage that makes R18 is during greater than PN junction voltage, and then triode is shunted; Maximum current in the R19 resistance limits circuit makes it be no more than the maximum output current value of operational amplifier; The integrating circuit that R17 and C1 form postpones signal, and clutter is filtered.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model instructions is claim of the present utility model and contains.
Claims (1)
1. an attitude sensor is provided with angular transducer, probe power and central processing unit, it is characterized in that:
Described probe power links to each other with heating module with the 5V voltage stabilizer by DC wave filter; The electric current of 5V voltage stabilizer is leaded up to 3.3V voltage stabilizer input central processing unit, another road input two angular transducers parallel with one another, the signal of two angular transducers is through two difference input channels of input central processing unit behind the digital filtering of passive filter; Two angular transducers are respectively directions X obliquity sensor and Y-direction obliquity sensor, are vertically mounted on the circuit board mutually; The deviate of central processing unit output is isolated transceiver module by CAN controller and CAN and is delivered to host computer;
Described central processing unit is mixed signal ISP microcontroller, is connected with parameter register on it;
It is single-chip microcomputer operating voltage 3.3V circuit that 9,10 pins in the described mixed signal ISP microcontroller connect, and 31,32 pins connect for producing reference voltage ++ the reference circuit of 5V, and 12 connect reset circuit;
Described CAN controller is isolated transceiver module with CAN and is linked to each other by the reading and writing pin;
Described directions X obliquity sensor links to each other with OUT2 by OUT1 with passive filter, and the directions X obliquity sensor obtains reference voltage by 6,7,12 pins ++ 5V; The Y-direction obliquity sensor links to each other with OUT2 by OUT1 with passive filter, and the Y-direction obliquity sensor obtains reference voltage by 6,7,12 pins ++ 5V; Passive filter is made up of polar capacitor, a polarity free capacitor by 6;
Described heating module is constant-temperature circuit, comprise 1 temperature sensor, triode as well heater heat, an operational amplifier, R16 and R15 carry out the equivalent dividing potential drop, obtain voltage reference; Operational amplifier compares the magnitude of voltage of 1 and 3 pins, when 3 pin values are higher, and circuit turn-on, triode heats as well heater; If electric current is too big, the magnitude of voltage that makes R18 is during greater than PN junction voltage, and then triode is shunted; Maximum current in the R19 resistance limits circuit makes it be no more than the maximum output current value of operational amplifier; The integrating circuit that R17 and C1 form postpones signal, and clutter is filtered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113373 CN203116750U (en) | 2013-03-13 | 2013-03-13 | Posture sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113373 CN203116750U (en) | 2013-03-13 | 2013-03-13 | Posture sensor |
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| CN203116750U true CN203116750U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320113373 Expired - Fee Related CN203116750U (en) | 2013-03-13 | 2013-03-13 | Posture sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162685A (en) * | 2013-03-13 | 2013-06-19 | 西安工业大学 | Attitude sensor |
| CN103453877A (en) * | 2013-08-09 | 2013-12-18 | 西安交通大学 | Self-powered monolithic integration digital sensor for detection of light source direction |
-
2013
- 2013-03-13 CN CN 201320113373 patent/CN203116750U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162685A (en) * | 2013-03-13 | 2013-06-19 | 西安工业大学 | Attitude sensor |
| CN103453877A (en) * | 2013-08-09 | 2013-12-18 | 西安交通大学 | Self-powered monolithic integration digital sensor for detection of light source direction |
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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 |
Granted publication date: 20130807 Termination date: 20150313 |
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| EXPY | Termination of patent right or utility model |