CN102413613A - Electricity-saving control device method and method for human body detection based on capacitance effect - Google Patents
Electricity-saving control device method and method for human body detection based on capacitance effect Download PDFInfo
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- CN102413613A CN102413613A CN2011103802481A CN201110380248A CN102413613A CN 102413613 A CN102413613 A CN 102413613A CN 2011103802481 A CN2011103802481 A CN 2011103802481A CN 201110380248 A CN201110380248 A CN 201110380248A CN 102413613 A CN102413613 A CN 102413613A
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- chip microcomputer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention is suitable for the field of energy-saving control and provides an electricity-saving control device and method for human body detection based on a capacitance effect. The electricity-saving control device comprises a photosensitive sensor, a capacitive human body detector, a detector, a low-pass filter, a single chip microcomputer and a control switch, wherein the capacitive human body detector is connected to the input end of the single chip microcomputer in sequence through the detector and the low-pass filter; the photosensitive sensor is connected to the other input end of the single chip microcomputer; and the output end of the single chip microcomputer is connected with the control switch. According to the electricity-saving control device and method disclosed by the invention, the single chip microcomputer is used as a control unit, a key technology of human body detection is realized on the basis of the capacitance effect, the problems of outage in the existence of people, false operation and short-time dysfunction of the traditional detection mode are solved, convenience is brought for life of people, and intelligent and humanized control is achieved.
Description
Technical field
The invention belongs to the Energy Saving Control field, relate in particular to a kind of electricity-saving control device and method based on the detection of capacitive effects human body.
Background technology
According to statistics, the energy consumption of the whole society the chances are three parts: industry, building and traffic, China's building energy consumption probably account for wherein 1/3.Electric consumption on lighting is again the main electricity consumption of building such as school, government department, office building, so under the current social environment of advocating energy-saving and emission-reduction energetically, the economize on electricity control of illumination has become the important research direction in intelligent building field.
Also have electricity-saving controller whether to have people's illumination light fixture to carry out switch control at present, but there is obvious defects in product according to illuminance and indoor.Because human detection is to realize the key technology of illumination economize on electricity control; And human detection modes such as pyroelectric sensor commonly used, microwave sensor can only detect the human body of motion; Can not detect static human body; So make existing product the problem of " someone is cut off the power supply " often occur, brought very big inconvenience for normal study and work; Utilize the relative motion method can carry out the passive infrared detection device that static human body detects though also have, infrared inductor influenced by various thermals source, light source to make sniffer produce misoperation, ambient temperature and human body temperature near the time detectivity obviously descend and make sniffer malfunctioning in short-term.So the self shortcoming of existing electricity-saving controller has influenced its application in places such as classroom, offices.
Summary of the invention
The object of the present invention is to provide a kind of electricity-saving control device, be intended to solve traditional detection mode " someone is cut off the power supply " and misoperation, malfunctioning problem in short-term based on the detection of capacitive effects human body.
This device is made up of light sensor, condenser type peoplesniffer, wave detector, low pass filter, single-chip microcomputer and control switch:
Said condenser type peoplesniffer passes through the input that wave detector and low pass filter are connected single-chip microcomputer successively;
Said light sensor is connected another input of single-chip microcomputer;
The output of single-chip microcomputer is connected with control switch.
Further, said condenser type peoplesniffer is made up of sine-wave generator, outer meeting resistance and battery lead plate:
Said battery lead plate is connected on the sine-wave generator through outer meeting resistance;
The input of said wave detector is connected between battery lead plate and the outer meeting resistance.
Further, said single-chip microcomputer can be made up of A/D converter and processor CPU:
The input of said processor CPU links to each other with low pass filter through A/D converter, and another input links to each other with light sensor;
The output of said processor CPU links to each other with control switch.
Further; Said light sensor, sine-wave generator, outer meeting resistance, wave detector, low pass filter, single-chip microcomputer and control switch can be installed in the induction box; Induction box is made up of loam cake that matches and base, and loam cake has the perforate of aiming at search coverage at the light sensor place.
Further, said battery lead plate can be installed on the indoor back or on the door.
Another object of the present invention is to provide a kind of power-saving control method based on the detection of capacitive effects human body, this method comprises:
Judge whether illuminance satisfies the condition of turning on light;
If satisfy the condition of turning on light, switch on to battery lead plate through sine-wave generator and outer meeting resistance, and to the magnitude of voltage circulating sampling on the battery lead plate;
To collecting to such an extent that voltage signal carries out Filtering Processing;
The voltage signal that filtering is obtained carries out the A/D conversion;
Digital quantity magnitude of voltage that obtains and reference voltage value are compared, judge the indoor people that whether has;
If the people is arranged, control switch breaks off;
If unmanned, control switch is closed.
Electricity-saving control device that the present invention adopts and method use single-chip microcomputer as control unit; Realized the key technology of human body detection based on capacity effect; Traditional detection mode " someone is cut off the power supply " and misoperation, malfunctioning problem have in short-term been solved; In economize on electricity, brought convenience also for people's life, realized intelligent, hommization control.
Description of drawings
Fig. 1 is the structure principle chart of the control device that provides of the embodiment of the invention;
Fig. 2 is the structural representation of the induction box that provides of the embodiment of the invention;
Fig. 3 is the structural representation of the battery lead plate that provides of the embodiment of the invention;
Fig. 4 is the realization flow figure of the control method that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The structural representation that Fig. 1 shows that the embodiment of the invention provides based on the electricity-saving control device of detection of capacitive effects human body.For the ease of explanation, only show the part relevant with the embodiment of the invention.
This device is made up of light sensor 6, condenser type peoplesniffer 1, wave detector 2, low pass filter 3, single-chip microcomputer 4 and control switch 5:
The output of single-chip microcomputer 4 is connected with control switch 5.
As a preferred version of the embodiment of the invention, sine-wave generator 11, wave detector 2, low pass filter 3 can be integrated on the electric field IC chip.
As a preferred version of the embodiment of the invention, condenser type peoplesniffer 1 is made up of sine-wave generator 11, outer meeting resistance 13 and battery lead plate 12:
The input of wave detector 2 is connected between battery lead plate 12 and the outer meeting resistance 13.
As a preferred version of the embodiment of the invention, single-chip microcomputer 4 can be made up of with processor CPU42 A/D converter 41:
The input of processor CPU42 links to each other with low pass filter 3 through A/D converter 41, and another input links to each other with light sensor 6;
The output of processor CPU42 links to each other with control switch 5.
Preferred version as the embodiment of the invention; As shown in Figure 2; Light sensor 6, sine-wave generator 11, outer meeting resistance 13, wave detector 2, low pass filter 3, single-chip microcomputer 4 and control switch 5 can be installed in the induction box; Induction box is made up of loam cake that matches 8 and base 9, and loam cake 8 has the perforate of aiming at search coverage at light sensor 6 places.
As a preferred version of the embodiment of the invention, battery lead plate 12 can be installed on the indoor back or on the door.
The realization flow that Fig. 4 shows that the embodiment of the invention provides based on the power-saving control method of detection of capacitive effects human body.
This method comprises:
S101: judge that whether illuminance satisfies the condition of turning on light, and then gets into S102 if satisfy the condition of turning on light, otherwise returns S101;
S102: give battery lead plate 12 energisings through sine-wave generator 11 and outer meeting resistance 13, and to the magnitude of voltage circulating sampling on the battery lead plate 12;
S103: to collecting to such an extent that voltage signal carries out Filtering Processing;
S104: the voltage signal that filtering is obtained carries out the A/D conversion;
S105: digital quantity magnitude of voltage that obtains and reference voltage value are compared (magnitude of voltage the when distance of human body and battery lead plate 12 changes on the battery lead plate 12 can change), judge the indoor people that whether has; As indoor unmanned, then get into S106; If indoor have a people, then get into S107;
S106: control switch 5 breaks off, and returns S101;
S107: control switch 5 closures, return S101.
Below in conjunction with accompanying drawing and specific embodiment application principle of the present invention is further described.
Capacitor is a kind of element of ability store charge, and the simplest capacitor is made up of two conductive plates and middle insulation dielectric.When switching on, have positive and negative charge respectively because of the function of current on two plates to capacitor.Because insulate in the middle of the pole plate,, will on pole plate, accumulate so electric charge can't neutralize.The physical quantity that the measurement capacitor holds the electric charge ability is capacitance C, is the capacitor of parallel-plate for conductive plate, and capacitance is determined by following formula:
The capacitance of C in the formula---capacitor; ε 0---the dielectric constant of vacuum; ε r---medium is with respect to the relative dielectric constant of vacuum between pole plate; The relative effective area of S---pole plate; D---the distance between pole plate.
Medium is the capacitor most important parts, if media variations, promptly medium changes with respect to the relative dielectric constant of vacuum, and capacitance just changes, and the quantity of electric charge on the pole plate changes thereupon, and the voltage of two pole plates is respective change also.Polar plate voltage and changes in capacitance relation are:
Usually, air is with respect to the relative dielectric constant ε r ≈ 1 of vacuum, the relative dielectric constant ε r ≈ 80 of water against vacuum.Because people's physical efficiency is stored certain electric charge, so there is electric capacity significantly in human body.Also comprise ionic species in the human body simultaneously, can become good electric conductor.If a conductive plate as a pole plate, as another piece pole plate, has just been formed an electric capacity with human body between human body and conductive plate.Because the most of material in the human body all is a water, dielectric constant is high a lot of than air, so this capacitor capacitance difference when people and no one are arranged is bigger.And can be known that by the front formula capacitance is with relevant apart from d, if therefore human motion, capacitance also has corresponding variation.As long as so there is the people to exist,, still move, all can influence the size of capacitance, thereby influence the size of voltage no matter he is static.In view of the above, can realize the human detection function, thereby electricity consumptions such as illumination reach the Based Intelligent Control of " someone switch on, unmanned outage " through measured voltage values.
As shown in Figure 1, battery lead plate 12 constitutes capacitor with human body pole plate 7, and the sine-wave generator 11 in the condenser type peoplesniffer 1 cooperates generation 120kHz sinusoidal wave to battery lead plate 12 energisings with outer meeting resistance 13 (22k Ω).When the indoor human body state changed (refer to nobody, the people is arranged), the pole plate electric field changed, and relevant capacitance value changes, the proportional variation of voltage that records and 1/C.Nobody the time, detected capacitance little (2pF), it is maximum to detect voltage, is 3.5V; Man-hour is arranged; Capacitance obviously increases; Detection voltage reduces, the distance dependent between its numerical values recited and human body and the battery lead plate 12, and the maximum distance between human body and the battery lead plate 12 is 40cm; This moment body capacitance 120pF, the distance of human body distance electrode plate 12 detects voltage in 40cm the time and between 0～3.3V, changes.
A/D converter 41 is gathered voltage signal, and converts digital quantity into, in processor CPU42, handles accordingly then, compares with reference voltage value (3.4V), judges the indoor people that whether has, and obtains the control switch 5 that control signal corresponding removes to control light fixture.
Nobody the time, detect voltage greater than reference voltage value, control signal is output as low, and device powers down is not moved; Man-hour is arranged, detect voltage less than reference voltage value, control signal is high, makes the device power operation.And the linear photosensor pipe is adopted in control for light, handles through single-chip microcomputer 4, accurately according to illuminance control illumination.Be lower than 200lx like illuminance in classroom, the office, turn on light; Illuminance is higher than 300lx, turns off the light.
Electricity-saving control device that the present invention adopts and method use single-chip microcomputer 4 as control unit; Realized the key technology of human body detection based on capacity effect; Traditional detection mode " someone is cut off the power supply " and misoperation, malfunctioning problem have in short-term been solved; In economize on electricity, brought convenience also for people's life, realized intelligent, hommization control.
The realization flow of standard can repeat no more at this with reference to the described power-saving control method based on the detection of capacitive effects human body of preamble.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the electricity-saving control device based on the detection of capacitive effects human body is characterized in that, this device is made up of light sensor, condenser type peoplesniffer, wave detector, low pass filter, single-chip microcomputer and control switch:
Said condenser type peoplesniffer passes through the input that wave detector and low pass filter are connected single-chip microcomputer successively;
Said light sensor is connected another input of single-chip microcomputer;
The output of single-chip microcomputer is connected with control switch.
2. control device as claimed in claim 1 is characterized in that, said condenser type peoplesniffer is made up of sine-wave generator, outer meeting resistance and battery lead plate:
Said battery lead plate is connected on the sine-wave generator through outer meeting resistance;
The input of said wave detector is connected between battery lead plate and the outer meeting resistance.
3. control device as claimed in claim 1 is characterized in that, said single-chip microcomputer can be made up of A/D converter and processor CPU:
The input of said processor CPU links to each other with low pass filter through A/D converter, and another input links to each other with light sensor;
The output of said processor CPU links to each other with control switch.
4. like claim 1,2 described control device; It is characterized in that; Said light sensor, sine-wave generator, outer meeting resistance, wave detector, low pass filter, single-chip microcomputer and control switch can be installed in the induction box; Induction box is made up of loam cake that matches and base, and loam cake has the perforate of aiming at search coverage at the light sensor place.
5. like claim 1,2 described control device, it is characterized in that said battery lead plate can be installed on the indoor back or on the door.
6. control device as claimed in claim 1 is characterized in that, said sine-wave generator, wave detector, low pass filter can be integrated on the electric field IC chip.
7. the power-saving control method based on the detection of capacitive effects human body is characterized in that, this method comprises:
Judge whether illuminance satisfies the condition of turning on light;
If satisfy the condition of turning on light, switch on to battery lead plate through sine-wave generator and outer meeting resistance, and to the magnitude of voltage circulating sampling on the battery lead plate;
To collecting to such an extent that voltage signal carries out Filtering Processing;
The voltage signal that filtering is obtained carries out the A/D conversion;
Digital quantity magnitude of voltage that obtains and reference voltage value are compared, judge the indoor people that whether has;
If the people is arranged, control switch breaks off;
If unmanned, control switch is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103802481A CN102413613A (en) | 2011-11-21 | 2011-11-21 | Electricity-saving control device method and method for human body detection based on capacitance effect |
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| CN2011103802481A CN102413613A (en) | 2011-11-21 | 2011-11-21 | Electricity-saving control device method and method for human body detection based on capacitance effect |
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| CN102413613A true CN102413613A (en) | 2012-04-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106292383A (en) * | 2015-05-11 | 2017-01-04 | 阿里巴巴集团控股有限公司 | Control system and method |
| CN109073774A (en) * | 2016-05-03 | 2018-12-21 | 西斯维尔科技有限公司 | Capacitance sensor and method for the change in sensing space |
| CN109661085A (en) * | 2018-12-29 | 2019-04-19 | 桂林凯歌信息科技有限公司 | Dynamic and static human body sense light and control method based on induction field |
| CN109673084A (en) * | 2018-12-29 | 2019-04-23 | 桂林凯歌信息科技有限公司 | Dynamic and static human body sense light and its control method based on three-dimensional electric field |
| CN111045342A (en) * | 2019-12-26 | 2020-04-21 | 宗泽 | Automatic energy-saving control platform based on cloud computing service |
| CN111856586A (en) * | 2019-04-30 | 2020-10-30 | 合肥华凌股份有限公司 | Human body detection device, water supply equipment and method |
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| CN101667823A (en) * | 2009-09-09 | 2010-03-10 | 江苏惠通集团有限责任公司 | Inductive backlight key circuit |
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| CN2245319Y (en) * | 1995-05-23 | 1997-01-15 | 王志军 | Controller for illuminating lamp and lanterns |
| CN201194386Y (en) * | 2008-04-03 | 2009-02-11 | 上海兰宝传感器有限公司 | Circuit apparatus of capacitor type approach switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106292383A (en) * | 2015-05-11 | 2017-01-04 | 阿里巴巴集团控股有限公司 | Control system and method |
| CN106292383B (en) * | 2015-05-11 | 2020-06-26 | 阿里巴巴集团控股有限公司 | Control system and method |
| CN109073774A (en) * | 2016-05-03 | 2018-12-21 | 西斯维尔科技有限公司 | Capacitance sensor and method for the change in sensing space |
| CN109073774B (en) * | 2016-05-03 | 2021-09-24 | 西斯维尔科技有限公司 | Capacitive sensor and method for sensing changes in space |
| CN109661085A (en) * | 2018-12-29 | 2019-04-19 | 桂林凯歌信息科技有限公司 | Dynamic and static human body sense light and control method based on induction field |
| CN109673084A (en) * | 2018-12-29 | 2019-04-23 | 桂林凯歌信息科技有限公司 | Dynamic and static human body sense light and its control method based on three-dimensional electric field |
| CN111856586A (en) * | 2019-04-30 | 2020-10-30 | 合肥华凌股份有限公司 | Human body detection device, water supply equipment and method |
| CN111045342A (en) * | 2019-12-26 | 2020-04-21 | 宗泽 | Automatic energy-saving control platform based on cloud computing service |
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Application publication date: 20120411 |