CN105783972A - Ceiling type sensor - Google Patents
Ceiling type sensor Download PDFInfo
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- CN105783972A CN105783972A CN201610338243.5A CN201610338243A CN105783972A CN 105783972 A CN105783972 A CN 105783972A CN 201610338243 A CN201610338243 A CN 201610338243A CN 105783972 A CN105783972 A CN 105783972A
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- sensor
- divider resistance
- voltage
- differential resistor
- differential
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a ceiling type sensor which comprises a reference sensor, a calibration sensor, a detection circuit, a reference module, a comparison module and an output module, wherein the reference sensor and the calibration sensor are respectively used for outputting a first sampling voltage and a second sampling voltage; the detection circuit comprises a differential amplifier circuit; the two input ends of the differential amplifier circuit are coupled with the first sampling voltage and the second sampling voltage; an output end of the differential amplifier circuit is used for outputting a third sampling voltage after being amplified; the reference module is used for supplying a reference voltage; the comparison module is coupled with the differential amplifier circuit and the reference module and is used for outputting an enabling signal when the third sampling voltage is more than the reference voltage; and the output module is used for outputting the third sampling voltage when the enabling signal is received. The functions of infrared detection and temperature and humidity sensors are integrated, and meanwhile, a wireless module is designed for receiving and dispatching the signal, so that the operation is more convenient.
Description
Technical field
The present invention relates to sensor, particularly to a kind of ceiling type sensor.
Background technology
Sensor (English name: transducer/sensor) is a kind of detecting device, measured information can be experienced, and the information that can will experience, it is for conversion into the information output of the signal of telecommunication or other desired forms according to certain rules, to meet the requirements such as the transmission of information, process, storage, display, record and control.
The feature of sensor includes: microminiaturization, digitized, intellectuality, multifunction, systematization, networking.It is the primary link realizing automatically detecting and automatically controlling.The existence of sensor and development, allow object have the sense organ such as sense of touch, taste and smell, allows object slowly become to have lived.The ten big classes such as temperature-sensitive element, light-sensitive element, gas sensor, force sensing element, magneto sensor, dew cell, acoustic sensor, lonizing radiation sensing element, color sensor and the quick element of taste it are divided into generally according to its basic perceptive function.
And at present use can be applied to a kind of ceiling type sensor in family, general absorption is arranged on the ceiling of family, certain problem so easily occurs, although can playing to reduce and installing the effect that control takies, and human body is survivable, but owing to humidity, the aerial distribution of temperature are not uniform, so there is error, the subsequent applications of Smart Home is produced large effect by this error.
Summary of the invention
It is an object of the invention to provide a kind of a kind of ceiling type sensor that error is detected.
The above-mentioned purpose of the present invention has the technical scheme that a kind of ceiling type sensor, including reference sensor, it is characterised in that: also including calibration sensor and testing circuit, described testing circuit includes
Differential amplifier circuit, two input couples the first sampled voltage and the second sampled voltage, the 3rd sampled voltage after the output amplification of its outfan；
Base modules, it is provided that reference voltage；
Comparison module, is coupled to differential amplifier circuit and base modules, when the 3rd sampled voltage is more than reference voltage, and output enabling signal；
Output module, when receiving enabling signal, exports the 3rd sampled voltage.
Further: described comparison module includes absolute value comparison circuit, when the absolute value of described 3rd sampled voltage is more than reference voltage, output enabling signal.When the absolute value of the 3rd sampled voltage is more than reference voltage, it is possible to output enabling signal, it is ensured that output normal.
Further: described comparison module includes the first comparator and the second comparator, the negative input end of described first comparator and the positive input terminal of the second comparator and all receives the 3rd sampled voltage；
Described base modules includes the first reference cell and the second reference cell, described first reference cell provides just is limitting reference voltage, described second reference cell provides anti-reference voltage of limitting, described 3rd sampled voltage more than just limitting reference voltage or during less than anti-limit reference voltage, output enabling signal.Setting by base modules and comparison module, it is ensured that voltage stabilization exports.
Further: described first reference cell includes the first divider resistance, the second divider resistance and the 3rd divider resistance that are arranged in series, the node that described first divider resistance and the second divider resistance couple provides and is just limitting reference voltage.Arranged by dividing potential drop, it is ensured that just limitting reference voltage stable.
Further: described 3rd divider resistance is adjustable resistance.Voltage limit can be aligned by adjustable resistance to be adjusted.
Further: described second reference cell includes the 4th divider resistance, the 5th divider resistance and the 6th divider resistance that are arranged in series, the node that described 4th divider resistance and the 5th divider resistance couple provides and is just limitting reference voltage.Arranged by dividing potential drop, it is ensured that anti-limit reference voltage is stable.
Further: described 6th divider resistance is adjustable resistance.Negative voltage limit can be adjusted by adjustable resistance.
Further: described differential amplifier circuit includes difference amplifier, the first differential resistor, the second differential resistor, the 3rd differential resistor and the 4th differential resistor, the outfan of described first differential resistor and the second differential resistor series connection reference sensor and difference amplifier, the node that described second differential resistor and the first differential resistor couple couples the negative input end of difference amplifier；Between described 3rd differential resistor and the 4th differential resistor series connection calibration sensor and ground end, the node that described 3rd differential resistor and the 4th differential resistor couple couples the positive input terminal of difference amplifier.Realized the effect of differential amplification by difference amplifier, realized by simple differential amplification connection simultaneously.
In sum, the method have the advantages that one, the situation of environment normally can be detected, but differing bigger if there is temperature or humidity because of the value of the discrepancy in elevation, so now, can be understood as the result of this detection and there is certain problem, so the 3rd sampled voltage being exported (parameter error of the reaction discrepancy in elevation) in time this testing result to be judged now by enabling signal, it is ensured that output effect.The collection function such as infrared acquisition, Temperature Humidity Sensor, design wireless module carries out signal transmitting and receiving simultaneously, comparatively convenient.
Accompanying drawing explanation
Fig. 1 is ceiling type sensor construction schematic diagram one；
Fig. 2 is ceiling type sensor construction schematic diagram two；
Fig. 3 is sensor circuit schematic diagram one；
Fig. 4 is sensor circuit schematic diagram two.
In figure, 1, housing；11, mounting structure；111, reference sensor；112, calibration sensor；200, differential amplifier circuit；300, base modules；310, the first reference cell；320, the second reference cell；400, comparison module；500, output module.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
nullShown in seeing figures.1.and.2，A kind of ceiling type sensor，Including housing 1，As shown in the figure，Housing 1 adopts airflow design，Comparatively attractive in appearance and stability is higher，Fixing comparatively firm，And be suitable for directly carrying，Housing 1 is provided with mounting structure 11，Housing 1 is internally provided with reference sensor 111，Reference sensor 111 can be temperature sensor can also be humidity sensor or combustible gas sensor，It it not the designing points of the present invention，The present invention is characterized by，Owing to presence sensor detects position impact，Whole test point is made to produce error because of the discrepancy in elevation，When error is bigger，Error amount should be sent in time and carry out feedback regulation to central control unit，Ensure that error is in normal range，So in order to avoid the discrepancy in elevation affects，It is relatively low relative to reference sensor 111 that calibration sensor 112 is arranged position by suggestion，Suggestion is arranged on the position near floor, the room，Simultaneously because calibration sensor 112 is without configuring computing circuit，So volume can design very little，Calibration sensor 112 can pass through wired or wireless directly connect with reference sensor 111，Ensure result of use，Including reference sensor 111，Also include calibration sensor 112 and testing circuit，Described reference sensor 111 and calibration sensor 112 export the first sampled voltage and the second sampled voltage respectively，Described testing circuit includes differential amplifier circuit，Two input couples the first sampled voltage and the second sampled voltage，The 3rd sampled voltage after the output amplification of its outfan；Base modules 300, it is provided that reference voltage；Comparison module 400, is coupled to differential amplifier circuit and base modules 300, when the 3rd sampled voltage is more than reference voltage, and output enabling signal；Output module 500, when receiving enabling signal, exports the 3rd sampled voltage.
With reference to shown in Fig. 3, described comparison module 400 includes absolute value comparison circuit, when the absolute value of described 3rd sampled voltage is more than reference voltage, and output enabling signal.Described comparison module 400 includes the first comparator and the second comparator, the negative input end of described first comparator and the positive input terminal of the second comparator and all receives the 3rd sampled voltage；Base modules 300 includes the first reference cell 310 and the second reference cell 320, described first reference cell 310 provides just limits reference voltage, described second reference cell 320 provides counter and limits reference voltage, described 3rd sampled voltage more than just limitting reference voltage or during less than anti-limit reference voltage, output enabling signal.
With reference to shown in Fig. 4, the first reference cell 310 includes the first divider resistance, the second divider resistance and the 3rd divider resistance that are arranged in series, and the node that described first divider resistance and the second divider resistance couple provides and just limitting reference voltage.3rd divider resistance is adjustable resistance.Second reference cell 320 includes the 4th divider resistance, the 5th divider resistance and the 6th divider resistance that are arranged in series, and the node that described 4th divider resistance and the 5th divider resistance couple provides and just limitting reference voltage.6th divider resistance is adjustable resistance.
With reference to shown in Fig. 3, differential amplifier circuit includes difference amplifier, the first differential resistor, the second differential resistor, the 3rd differential resistor and the 4th differential resistor, the outfan of described first differential resistor and the second differential resistor series connection reference sensor 111 and difference amplifier, the node that described second differential resistor and the first differential resistor couple couples the negative input end of difference amplifier；Between described 3rd differential resistor and the 4th differential resistor series connection calibration sensor 112 and ground end, the node that described 3rd differential resistor and the 4th differential resistor couple couples the positive input terminal of difference amplifier.
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in scope of the presently claimed invention.
Claims (8)
1. a ceiling type sensor, including reference sensor, it is characterised in that: also including calibration sensor and testing circuit, described reference sensor and calibration sensor and export the first sampled voltage and the second sampled voltage respectively, described testing circuit includes
Differential amplifier circuit, two input couples the first sampled voltage and the second sampled voltage, the 3rd sampled voltage after the output amplification of its outfan；
Base modules, it is provided that reference voltage；
Comparison module, is coupled to differential amplifier circuit and base modules, when the 3rd sampled voltage is more than reference voltage, and output enabling signal；
Output module, when receiving enabling signal, exports the 3rd sampled voltage.
2. a kind of ceiling type sensor as claimed in claim 1, it is characterised in that: described comparison module includes absolute value comparison circuit, when the absolute value of described 3rd sampled voltage is more than reference voltage, output enabling signal.
3. a kind of ceiling type sensor as claimed in claim 2, it is characterised in that: described comparison module includes the first comparator and the second comparator, the negative input end of described first comparator and the positive input terminal of the second comparator and all receives the 3rd sampled voltage；
Described base modules includes the first reference cell and the second reference cell, described first reference cell provides just is limitting reference voltage, described second reference cell provides anti-reference voltage of limitting, described 3rd sampled voltage more than just limitting reference voltage or during less than anti-limit reference voltage, output enabling signal.
4. a kind of ceiling type sensor as claimed in claim 3, it is characterized in that: described first reference cell includes the first divider resistance, the second divider resistance and the 3rd divider resistance that are arranged in series, the node that described first divider resistance and the second divider resistance couple provides and is just limitting reference voltage.
5. a kind of ceiling type sensor as claimed in claim 4, it is characterised in that: described 3rd divider resistance is adjustable resistance.
6. a kind of ceiling type sensor as claimed in claim 3, it is characterized in that: described second reference cell includes the 4th divider resistance, the 5th divider resistance and the 6th divider resistance that are arranged in series, the node that described 4th divider resistance and the 5th divider resistance couple provides and is just limitting reference voltage.
7. a kind of ceiling type sensor as claimed in claim 6, it is characterised in that: described 6th divider resistance is adjustable resistance.
8. a kind of ceiling type sensor as claimed in claim 1, it is characterized in that: described differential amplifier circuit includes difference amplifier, the first differential resistor, the second differential resistor, the 3rd differential resistor and the 4th differential resistor, the outfan of described first differential resistor and the second differential resistor series connection reference sensor and difference amplifier, the node that described second differential resistor and the first differential resistor couple couples the negative input end of difference amplifier；Between described 3rd differential resistor and the 4th differential resistor series connection calibration sensor and ground end, the node that described 3rd differential resistor and the 4th differential resistor couple couples the positive input terminal of difference amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338243.5A CN105783972A (en) | 2016-05-23 | 2016-05-23 | Ceiling type sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338243.5A CN105783972A (en) | 2016-05-23 | 2016-05-23 | Ceiling type sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105783972A true CN105783972A (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610338243.5A Pending CN105783972A (en) | 2016-05-23 | 2016-05-23 | Ceiling type sensor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121548A (en) * | 1976-08-08 | 1978-10-24 | Nippon Soken, Inc. | Deteriorated condition detecting apparatus for an oxygen sensor |
| CN2060921U (en) * | 1989-07-30 | 1990-08-22 | 贾怿 | Group radio alarming devices |
| CN101135580A (en) * | 2006-08-29 | 2008-03-05 | Abb专利有限公司 | Method for determining a characteristic of a sensor arrangement |
| US20090019330A1 (en) * | 2007-07-13 | 2009-01-15 | Friedrich Andreas P | Integrated circuit having built-in self-test features |
| CN104048692A (en) * | 2013-03-15 | 2014-09-17 | 英飞凌科技股份有限公司 | Sensor self-diagnosis using multiple signal paths |
| CN104280189A (en) * | 2014-08-19 | 2015-01-14 | 深圳市理邦精密仪器股份有限公司 | Pressure sensor fault hardware detection method and device |
| CN104913803A (en) * | 2014-03-11 | 2015-09-16 | 通用汽车环球科技运作有限责任公司 | Method and system for detection of erratic sensor using dynamic threshold |
| CN204986338U (en) * | 2015-09-24 | 2016-01-20 | 浙江宁帆轴承有限公司 | Fat machine is annotated to self test bearing |
-
2016
- 2016-05-23 CN CN201610338243.5A patent/CN105783972A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121548A (en) * | 1976-08-08 | 1978-10-24 | Nippon Soken, Inc. | Deteriorated condition detecting apparatus for an oxygen sensor |
| CN2060921U (en) * | 1989-07-30 | 1990-08-22 | 贾怿 | Group radio alarming devices |
| CN101135580A (en) * | 2006-08-29 | 2008-03-05 | Abb专利有限公司 | Method for determining a characteristic of a sensor arrangement |
| US20090019330A1 (en) * | 2007-07-13 | 2009-01-15 | Friedrich Andreas P | Integrated circuit having built-in self-test features |
| CN104048692A (en) * | 2013-03-15 | 2014-09-17 | 英飞凌科技股份有限公司 | Sensor self-diagnosis using multiple signal paths |
| CN104913803A (en) * | 2014-03-11 | 2015-09-16 | 通用汽车环球科技运作有限责任公司 | Method and system for detection of erratic sensor using dynamic threshold |
| CN104280189A (en) * | 2014-08-19 | 2015-01-14 | 深圳市理邦精密仪器股份有限公司 | Pressure sensor fault hardware detection method and device |
| CN204986338U (en) * | 2015-09-24 | 2016-01-20 | 浙江宁帆轴承有限公司 | Fat machine is annotated to self test bearing |
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Application publication date: 20160720 |
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