CN203500077U - Pyroelectric human body infrared-based fan intelligent temperature control system - Google Patents
Pyroelectric human body infrared-based fan intelligent temperature control system Download PDFInfo
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- CN203500077U CN203500077U CN201320587003.0U CN201320587003U CN203500077U CN 203500077 U CN203500077 U CN 203500077U CN 201320587003 U CN201320587003 U CN 201320587003U CN 203500077 U CN203500077 U CN 203500077U
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Abstract
The utility model discloses a pyroelectric human body infrared-based fan intelligent temperature control system. The system comprises a main controller, a human body sensing module, a temperature sensing module and a fan control module. The human body sensing module, the temperature sensing module and the fan control module are connected with the main controller. The main controller is used for achieving communication with all the modules. The human body sensing module is used for detecting whether people appear in a detecting area or not. The temperature sensing module is used for detecting the temperature of the peripheral environment. The fan control module is used for controlling turning on and off of a fan. When nobody is detected in the peripheral environment, the fan stops working automatically so that electrical energy is saved and the service life of the electric fan is prolonged. The magnitude of wind power can be adjusted automatically according to the detected temperature in a manner that the rotation speed of fan blades is increased when the temperature is high while the rotation speed of the fan blades is reduced when the temperature is low, so that the comfort level of users is improved.
Description
Technical field
The utility model belongs to electric fan technical field, is specifically related to a kind of fan intelligent temperature control system of releasing human body infrared based on heat.
Background technique
Electric fan is the small electric apparatus often using in people's daily life, but there is following defect and deficiency in current common electric fan: (1) common electric fan can not be closed automatically, after user leaves, forget and close electric fan, waste electric power resource and work long hours and also easily damage electric fan, even also can initiation fire; (2) rotating speed of fan can not be adjusted according to the variation of temperature, and temperature can not improve rotating speed while raising accordingly, and temperature can not reduce rotating speed while reducing accordingly.
Model utility content
In order to solve electric fan in prior art, lack the deficiency to the detection of environment, the utility model provides a kind of fan intelligent temperature control system of releasing human body infrared based on heat, and concrete technological scheme is as follows:
Based on heat, release a fan intelligent temperature control system for human body infrared, comprise master controller, human body induction module, temperature sensing module and fan control module; Human body induction module, temperature sensing module and fan control module are connected with master controller respectively; Wherein:
Human body induction module detects a detecting area, detects in detecting area, whether someone occurs, after having people to occur, sends a testing signal to master controller in detecting area being detected;
Temperature sensing module detects the temperature of surrounding environment, and the temperature detecting is sent to a temperature signal to master controller;
Master controller receives respectively testing signal and temperature signal, according to temperature signal, the temperature suitability degree of surrounding environment is judged, and transmit control signal to fan control module after receiving testing signal;
Fan control module reception control signal, controls the switch of fan and the size of air quantity according to control signal.
As optimized project, in master controller, store default start-up temperature value, master controller comprises the judged result of the temperature suitability degree of surrounding environment:
If the temperature of surrounding environment lower than start-up temperature value, sends the first control signal to fan control module, fan control module is controlled fan and is closed;
If the temperature of surrounding environment has reached start-up temperature value, send the second control signal to fan control module, fan control module is controlled fan and is opened.
As optimized project, fan comprises low-speed operation mode and high speed operation pattern, it is characterized in that, also stores default high-temperature temperature value in master controller, and master controller comprises the judged result of the temperature suitability degree of surrounding environment:
If the temperature of surrounding environment is higher than start-up temperature value but the temperature value that do not reach a high temperature sends the 3rd control signal to fan control module, fan control module is controlled fan and is moved at low-speed operation mode;
If the temperature of surrounding environment higher than high-temperature temperature value, sends the 4th control signal to fan control module, fan control module is controlled fan at high speed operation mode operation.
As optimized project, this fan intelligent temperature control system is also provided with display device, the temperature detecting for showing temperature sensing module.
As optimized project, this fan intelligent temperature control system also comprises luminosity acquisition module and lighting module, and luminosity acquisition module is connected with master controller respectively with lighting module;
Luminosity acquisition module detects the illumination intensity of surrounding environment, and the illumination signal detecting is passed to master controller;
Master controller receives after illumination signal, the illumination suitability degree of surrounding environment is judged, and send illumination control signal to lighting module, controls the switch of lighting module.
As optimized project, in master controller, store default startup photometric quantity, master controller comprises the judged result of the illumination suitability degree of surrounding environment:
If the illumination of surrounding environment, lower than starting photometric quantity, sends the first illumination control signal to lighting module, open lighting module;
If the illumination of surrounding environment has reached startup photometric quantity, send the second illumination control signal to lighting module, close lighting module.
As optimized project, this fan intelligent temperature control system also comprises alarm module, and the fan intelligent temperature control system of releasing human body infrared based on heat comprises burglar alarm pattern and high temperature alarm pattern; Burglar alarm pattern and high temperature alarm pattern are switched by the diverter switch being arranged on master controller; In master controller, store default alarm temperature value;
When in high temperature alarm pattern, master controller judges according to the temperature signal that receives, if ambient temperature reaches alarm temperature value, to alarm module, send high temperature alarm signal, alarm module is reported to the police after receiving high temperature alarm signal;
When in burglar alarm pattern, if master controller receives testing signal, to alarm module, send burglar alarm signal, alarm module is reported to the police after receiving burglar alarm signal.
As optimized project, master controller is STC80C52 single-chip microcomputer.
As optimized project, human body induction module comprises body sense chip, and body sense chip is SR-HC500 single-chip microcomputer, and body sense chip is connected with master controller, for realizing communicating by letter between human body induction module and master controller.
As optimized project, temperature sensing module comprises temperature sensor chip, and temperature sensor chip is DS18B20 single-chip microcomputer, and temperature sensor chip is connected with master controller, for sending the temperature signal detecting to master controller.
As optimized project, fan control module comprises fan governor, and fan governor is 9012PNP triode.
As optimized project, the model of display device is LCD1602.
As optimized project, luminosity acquisition module comprises photoresistor, comparison resistance and luminosity collecting treatment chip, and luminosity collecting treatment chip is voltage comparator LM393; Lighting module comprises at least one LED lamp.
As optimized project, alarm module comprises alarm processor and buzzer, and alarm processor is 9012PNP triode, and alarm processor is connected with buzzer with master controller respectively, alarm processor is used for receiving the alarm signal of autonomous controller, and controls buzzer warning according to alarm signal.
The beneficial effects of the utility model are:
(1) in surrounding environment being detected during nobody, fan of the present utility model can quit work automatically, thereby saving power extends working life of electric fan;
(2) the utility model can regulate wind-force size automatically according to the temperature detecting, and improves flabellum rotating speed when temperature is higher, reduces flabellum rotating speed when temperature is lower, thereby improves user's comfort level;
(3) optimized project of the present utility model, has also increased luminosity acquisition module and lighting control module, can be according to the brightness of the real-time regulation and control light of illumination brightness around;
(4) optimized project of the present utility model, has also increased burglar alarm module, when realizing anti-theft feature, also has high temperature alarm function, when excess Temperature, opens alarm and reminding user and notes avoiding heat;
(5) optimized project of the present utility model, has also increased mosquito repellent module, and because the refrigeration of electric fan is not as air-conditioning, mosquito repellent ability is not good, and therefore, mosquito repellent module can further improve user's comfort level.
Accompanying drawing explanation
Fig. 1 is general structure block diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of master controller of the present utility model;
Fig. 3 is the circuit theory diagrams of human body induction module of the present utility model;
Fig. 4 is the circuit theory diagrams of temperature sensing module of the present utility model;
Fig. 5 is the circuit theory diagrams of fan control module of the present utility model;
Fig. 6 is the circuit theory diagrams of luminosity acquisition module of the present utility model;
Fig. 7 is the circuit theory diagrams of lighting module of the present utility model;
Fig. 8 is the circuit theory diagrams of alarm module of the present utility model;
Fig. 9 is the circuit theory diagrams of display device of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, in embodiment's mode, describe the utility model in detail.
Embodiment 1:
As shown in Figure 1, based on heat, release the fan intelligent temperature control system of human body infrared, comprise master controller, human body induction module, temperature sensing module, fan control module, luminosity acquisition module, display device, lighting module and alarm module; Human body induction module, temperature sensing module, fan control module, luminosity acquisition module, display device, lighting module and alarm module are connected with master controller respectively.
Human body induction module detects a detecting area, detects in detecting area, whether someone occurs, after having people to occur, sends a testing signal to master controller in detecting area being detected.Temperature sensing module detects the temperature of surrounding environment, and the temperature detecting is sent to a temperature signal to master controller, the temperature that display device detects for showing temperature sensing module.Master controller receives respectively and forwards testing signal and temperature signal, according to temperature signal, the temperature suitability degree of surrounding environment is judged, and transmit control signal to fan control module after receiving testing signal; Fan control module reception control signal, controls the switch of fan and the size of air quantity according to control signal.
According to rotating speed, fan comprises low-speed mode and fast mode, in master controller, store default start-up temperature value and high-temperature temperature value, start-up temperature value and high-temperature temperature value set manually, and master controller comprises the judged result of the temperature suitability degree of surrounding environment:
(1), if the temperature of surrounding environment lower than start-up temperature value, sends the first control signal to fan control module, fan control module is controlled fan and is closed; (2) if the temperature of surrounding environment has reached start-up temperature value, send the second control signal to fan control module, fan control module is controlled fan and is opened; (3) if the temperature of surrounding environment higher than start-up temperature value but the temperature value that do not reach a high temperature sends the 3rd control signal to fan control module, fan control module is controlled fan and is moved at low-speed mode; (4), if the temperature of surrounding environment higher than high-temperature temperature value, sends the 4th control signal to fan control module, fan control module is controlled fan and is moved at fast mode.
Luminosity acquisition module detects the illumination intensity of surrounding environment, and the illumination signal detecting is passed to master controller; Master controller receives after illumination signal, the illumination suitability degree of surrounding environment is judged, and send illumination control signal to lighting module, controls the switch of lighting module.
In master controller, store default startup photometric quantity, start photometric quantity and set manually, master controller comprises the judged result of the illumination suitability degree of surrounding environment:
(1) if the illumination of surrounding environment, lower than starting photometric quantity, sends the first illumination control signal to lighting module, open lighting module; (2) if the illumination of surrounding environment has reached startup photometric quantity, send the second illumination control signal to lighting module, close lighting module.
In the present embodiment, fan intelligent temperature control system comprises burglar alarm pattern and high temperature alarm pattern; Burglar alarm pattern and high temperature alarm pattern are switched by the diverter switch being arranged on master controller; In master controller, store default alarm temperature value, alarm temperature value sets manually;
(1) when in high temperature alarm pattern, master controller judges according to the temperature signal that receives, if ambient temperature reaches alarm temperature value, to alarm module, send alarm signal, alarm module is reported to the police after receiving alarm signal; (2), when in burglar alarm pattern, if master controller receives testing signal,, to the alarm module signal that gives the alarm, alarm module is reported to the police after receiving alarm signal.
Master controller for realize with each module between communicate by letter, receive respectively from the signal of human body induction module and temperature sensing module and process; Transmitted signal realizes the control to fan control module.As shown in Figure 2, in the present embodiment, master controller is STC80C52 single-chip microcomputer, and the peripheral circuit of master controller comprises the crystal oscillation circuit by crystal oscillator X1, capacitor C 2 and capacitor C 3, and the reset circuit being comprised of interrupteur SW 1, resistance R 3 and capacitor C 4.
Human body induction module, for detection of in detecting area, whether someone occurs, after detecting signal, is passed to master controller by signal and is processed.As shown in Figure 3, in the present embodiment, human body induction module comprises body sense chip U2, and this body sense chip U2 is SR-HC500 single-chip microcomputer, the VO pin of body sense chip U2 is connected with the P1.2 pin of master controller, for realizing communicating by letter between human body induction module and master controller.
Temperature sensing module is for detection of the temperature of surrounding environment, and the signal detecting passed to master controller and process.As shown in Figure 4, in the present embodiment, temperature sensing module comprises temperature sensor chip U3, and temperature sensor chip U3 is DS18B20 single-chip microcomputer, the DQ pin of temperature sensor chip U3 is connected with the P1.0 pin of master controller, for sending the signal detecting to master controller.This DS18B20 integrated chip has display screen, can show the temperature detecting.
Fan control module, for receiving the signal of autonomous controller, is controlled the switch of fan.As shown in Figure 5, in the present embodiment, fan control module comprises fan governor Q1, fan governor Q1 is 9012PNP triode, the P1.6 pin of the base stage access master controller of this fan governor Q1, emitter connects power supply, and collector electrode is connected with the motor of fan.Fan governor Q1 is according to coming the control signal of autonomous controller to control the switch of fan electromotor and rotating speed.
Luminosity acquisition module is connected with master controller, for detection of the illumination intensity of surrounding environment, and the signal detecting is passed to master controller and process.As shown in Figure 6, in the present embodiment, luminosity acquisition module comprises photoresistor VR1, comparison resistance R1 and luminosity collecting treatment chip U3, luminosity collecting treatment chip U3 is voltage comparator LM393, the positive input terminal access photoresistor VR1 of voltage comparator LM393, the negative input end access comparison resistance R1 of voltage comparator LM393, the output terminal of voltage comparator LM393 is connected with the P1.1 pin of master controller.By changing the resistance of comparison resistance R1, can set corresponding reference voltage level, photoresistor is for reflecting actual voltage value according to illumination luminosity, luminosity collecting treatment chip U3 is used for relatively actual voltage value and reference voltage level, and sends an illumination signal to master controller according to comparative result.
Lighting module is connected with master controller, for receiving the signal of autonomous controller, controls the switch of light.As shown in Figure 7, in the present embodiment, lighting module comprises two LED lamp D1 and D2, is connected respectively with the P1.3 pin of master controller with P1.4 pin.
Burglar alarm module is connected with master controller, for receiving the signal of autonomous controller, controls the switch of alarm.As shown in Figure 8, in the present embodiment, burglar alarm module comprises alarm processor Q2 and buzzer LS1, alarm processor Q2 is 9012PNP triode, the collector electrode of alarm processor Q2 is connected with the positive pole of buzzer LS1, the minus earth of buzzer LS1, the base stage of alarm processor Q2 is connected with the P1.7 pin of master controller, for receiving the alarm signal of autonomous controller.
Display device is connected with master controller, the temperature detecting for showing temperature sensing module.As shown in Figure 9, in the present embodiment, display device adopts the LCD display that model is LM016L.
The utility model can be with many multi-form realizations, and should not be construed as the embodiment's who is subject in this proposition restriction.
Claims (14)
1. based on heat, release a fan intelligent temperature control system for human body infrared, for a fan is controlled, it is characterized in that, comprise master controller, human body induction module, temperature sensing module and fan control module; Described human body induction module, temperature sensing module and fan control module are connected with described master controller respectively; Wherein:
Described human body induction module detects a detecting area, detects in described detecting area, whether someone occurs, after having people to occur, sends a testing signal to described master controller in described detecting area being detected;
Described temperature sensing module detects the temperature of surrounding environment, and the temperature detecting is sent to a temperature signal to described master controller;
Described master controller receives respectively described testing signal and described temperature signal, according to described temperature signal, the temperature suitability degree of surrounding environment is judged, and transmit control signal to described fan control module after receiving described testing signal;
Described fan control module receives described control signal, according to described control signal, controls the switch of fan and the size of air quantity.
2. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 1, is characterized in that, stores default start-up temperature value in described master controller, and described master controller comprises the judged result of the temperature suitability degree of surrounding environment:
If the temperature of surrounding environment lower than start-up temperature value, sends the first control signal to described fan control module, described fan control module is controlled described fan and is closed;
If the temperature of surrounding environment has reached start-up temperature value, send the second control signal to described fan control module, described fan control module is controlled described fan and is opened.
3. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 2, it is characterized in that, described fan comprises low-speed operation mode and high speed operation pattern, in described master controller, also store default high-temperature temperature value, described master controller comprises the judged result of the temperature suitability degree of surrounding environment:
If the temperature of surrounding environment is higher than start-up temperature value but the temperature value that do not reach a high temperature sends the 3rd control signal to described fan control module, described fan control module is controlled described fan and is moved at low-speed operation mode;
If the temperature of surrounding environment higher than high-temperature temperature value, sends the 4th control signal to described fan control module, described fan control module is controlled described fan at high speed operation mode operation.
4. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 1, is characterized in that: be also provided with display device, the temperature detecting for showing temperature sensing module.
5. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 1, is characterized in that, also comprises luminosity acquisition module and lighting module, and described luminosity acquisition module is connected with described master controller respectively with lighting module;
Described luminosity acquisition module detects the illumination intensity of surrounding environment, and the illumination signal detecting is passed to described master controller;
Described master controller receives after described illumination signal, the illumination suitability degree of surrounding environment is judged, and send illumination control signal to described lighting module, controls the switch of described lighting module.
6. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 5, is characterized in that, stores default startup photometric quantity in described master controller, and described master controller comprises the judged result of the illumination suitability degree of surrounding environment:
If the illumination of surrounding environment, lower than starting photometric quantity, sends the first illumination control signal to described lighting module, open described lighting module;
If the illumination of surrounding environment has reached startup photometric quantity, send the second illumination control signal to described lighting module, close described lighting module.
7. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 1, is characterized in that, also comprises alarm module, and the described fan intelligent temperature control system of releasing human body infrared based on heat comprises burglar alarm pattern and high temperature alarm pattern; Described burglar alarm pattern and high temperature alarm pattern are switched by the diverter switch being arranged on described master controller; In described master controller, store default alarm temperature value;
When in high temperature alarm pattern, described master controller judges according to the described temperature signal receiving, if ambient temperature reaches alarm temperature value, to described alarm module, send high temperature alarm signal, described alarm module is reported to the police after receiving high temperature alarm signal;
When in burglar alarm pattern, if described master controller receives described testing signal, to described alarm module, send burglar alarm signal, described alarm module is reported to the police after receiving burglar alarm signal.
8. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 1 and 2, is characterized in that: described master controller is STC80C52 single-chip microcomputer.
9. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 1 and 2, it is characterized in that: described human body induction module comprises body sense chip, described body sense chip is SR-HC500 single-chip microcomputer, described body sense chip is connected with described master controller, for realizing communicating by letter between human body induction module and master controller.
10. the fan intelligent temperature control system of releasing human body infrared based on heat according to claim 1 and 2, it is characterized in that: described temperature sensing module comprises temperature sensor chip, described temperature sensor chip is DS18B20 single-chip microcomputer, described temperature sensor chip is connected with described master controller, for sending the temperature signal detecting to master controller.
The 11. fan intelligent temperature control systems of releasing human body infrared based on heat according to claim 1 and 2, is characterized in that: described fan control module comprises fan governor, described fan governor is 9012PNP triode.
The 12. fan intelligent temperature control systems of releasing human body infrared based on heat according to claim 4, is characterized in that: the model of described display device is LCD1602.
The 13. fan intelligent temperature control systems of releasing human body infrared based on heat according to claim 5, it is characterized in that: described luminosity acquisition module comprises photoresistor, comparison resistance and luminosity collecting treatment chip, described luminosity collecting treatment chip is voltage comparator LM393; Described lighting module comprises at least one LED lamp.
The 14. fan intelligent temperature control systems of releasing human body infrared based on heat according to claim 7, it is characterized in that: described alarm module comprises alarm processor and buzzer, described alarm processor is 9012PNP triode, described alarm processor is connected with described buzzer with described master controller respectively, described alarm processor is used for receiving the alarm signal of autonomous controller, and controls described buzzer warning according to described alarm signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320587003.0U CN203500077U (en) | 2013-09-23 | 2013-09-23 | Pyroelectric human body infrared-based fan intelligent temperature control system |
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| CN201320587003.0U CN203500077U (en) | 2013-09-23 | 2013-09-23 | Pyroelectric human body infrared-based fan intelligent temperature control system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486069A (en) * | 2013-09-23 | 2014-01-01 | 苏州经贸职业技术学院 | Fan intelligent temperature control system and method based on pyroelectric human body infrared |
| CN104329278A (en) * | 2014-10-27 | 2015-02-04 | 苏州佑瑞检测技术有限公司 | Intelligent temperature control and anti-theft method for fan |
| CN104405668A (en) * | 2014-10-27 | 2015-03-11 | 苏州佑瑞检测技术有限公司 | Fan control system with intelligent temperature control and antitheft control functions |
| CN104540309A (en) * | 2015-02-04 | 2015-04-22 | 温州异星电子科技有限公司 | Multifunctional intelligent table lamp |
| WO2016119294A1 (en) * | 2015-01-28 | 2016-08-04 | 广州光炬智能科技有限公司 | Fan driver apparatus |
| CN107061328A (en) * | 2017-04-23 | 2017-08-18 | 陈昭良 | A kind of fan |
| CN107401521A (en) * | 2016-05-31 | 2017-11-28 | 成都韵能科技有限公司 | A kind of electric fan with power consumption display |
| CN108561817A (en) * | 2018-04-23 | 2018-09-21 | 中山市风美照明科技有限公司 | A kind of fan lamp |
| WO2018223258A1 (en) * | 2017-06-05 | 2018-12-13 | 深圳市海和高新技术有限公司 | Security-capable intelligent fan with automatic on/off |
| CN109306971A (en) * | 2018-08-31 | 2019-02-05 | 覃坚 | Intelligent-induction automatic control electric fan |
| CN110439838A (en) * | 2019-07-31 | 2019-11-12 | 南宁学院 | A kind of human body based on photo resistance follows automatic speed regulating fan |
| CN111120368A (en) * | 2020-01-18 | 2020-05-08 | 东莞市奇芳电气有限公司 | Energy-saving control fan |
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2013
- 2013-09-23 CN CN201320587003.0U patent/CN203500077U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486069B (en) * | 2013-09-23 | 2016-06-22 | 苏州经贸职业技术学院 | Fan intelligent temperature control system and the method for human body infrared is released based on heat |
| CN103486069A (en) * | 2013-09-23 | 2014-01-01 | 苏州经贸职业技术学院 | Fan intelligent temperature control system and method based on pyroelectric human body infrared |
| CN104329278A (en) * | 2014-10-27 | 2015-02-04 | 苏州佑瑞检测技术有限公司 | Intelligent temperature control and anti-theft method for fan |
| CN104405668A (en) * | 2014-10-27 | 2015-03-11 | 苏州佑瑞检测技术有限公司 | Fan control system with intelligent temperature control and antitheft control functions |
| US11486598B2 (en) | 2015-01-28 | 2022-11-01 | Botao Zhang | Fan driving device |
| WO2016119294A1 (en) * | 2015-01-28 | 2016-08-04 | 广州光炬智能科技有限公司 | Fan driver apparatus |
| CN104540309A (en) * | 2015-02-04 | 2015-04-22 | 温州异星电子科技有限公司 | Multifunctional intelligent table lamp |
| CN107401521A (en) * | 2016-05-31 | 2017-11-28 | 成都韵能科技有限公司 | A kind of electric fan with power consumption display |
| CN107061328A (en) * | 2017-04-23 | 2017-08-18 | 陈昭良 | A kind of fan |
| WO2018223258A1 (en) * | 2017-06-05 | 2018-12-13 | 深圳市海和高新技术有限公司 | Security-capable intelligent fan with automatic on/off |
| CN108561817A (en) * | 2018-04-23 | 2018-09-21 | 中山市风美照明科技有限公司 | A kind of fan lamp |
| CN109306971A (en) * | 2018-08-31 | 2019-02-05 | 覃坚 | Intelligent-induction automatic control electric fan |
| CN110439838A (en) * | 2019-07-31 | 2019-11-12 | 南宁学院 | A kind of human body based on photo resistance follows automatic speed regulating fan |
| CN111120368A (en) * | 2020-01-18 | 2020-05-08 | 东莞市奇芳电气有限公司 | Energy-saving control fan |
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