CN210686399U - Microwave radar induction and infrared induction control system and intelligent fan - Google Patents
Microwave radar induction and infrared induction control system and intelligent fan Download PDFInfo
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- CN210686399U CN210686399U CN201921099850.6U CN201921099850U CN210686399U CN 210686399 U CN210686399 U CN 210686399U CN 201921099850 U CN201921099850 U CN 201921099850U CN 210686399 U CN210686399 U CN 210686399U
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Abstract
The utility model discloses a microwave radar response and infrared induction control system and smart fan has microwave radar inductor, pyroelectric infrared sensor and central controller, the position and the translation rate that are used for the detection object thing of microwave radar inductor, and the infrared ray that is used for responding to specific wavelength of infrared induction switch ware to whether the detection is entering into the induction zone for the people, central controller then executes the instruction according to microwave radar inductor and pyroelectric infrared sensor's signal output. The utility model discloses a dual judgement, can discern the human body more effectively, reach the effect of accurate detection and then control the operation of load, be applied to in the smart fan can realize the automatic start of fan and follow the human body and remove, reach good effect of cooling for the human body is bloied, satisfy the requirement of intelligent life; the utility model discloses an intelligent fan has the remote controller, can be convenient for the operation of remote control fan, and it is more convenient to use.
Description
Technical Field
The utility model relates to an intelligence control system technical field, more specifically the smart fan that relates to a microwave radar response and infrared ray induction control system and applied this system that says so.
Background
The electric fan is the most commonly used electric appliance in the family of people at present, is also the domestic appliance that is indispensable in the room, and the main effect of electric fan is that the fan rotates after the circular telegram and accelerates the air flow and makes the user reach the effect of cooling fast.
The conventional floor fan includes: base, pole setting, aircraft nose and set up the flabellum in the aircraft nose, the flabellum rotates through a driving motor drive, and whole aircraft nose is through swing motor drive wobbling at certain within range, and the swing of aircraft nose is in order to increase the working range of fan, can the cooling of blowing of large tracts of land. The rotation of fan blades and the swinging of a machine head in a traditional mechanical control floor fan are carried out in a manual regulation mode, a deflector rod is arranged on the machine head in most prior art, and the deflector rod is pushed down to be connected with a swinging motor to drive the whole machine head to rotate; when the shifting lever is pulled up and separated from the swing motor, the whole machine head is positioned.
The fan is used as an indispensable electric appliance of a modern family, how to better serve the life of people, and the intelligent, power-saving and humanized electric fan becomes the development direction of the electric fan. Most of intelligent electric fans appearing in the current market are devices mainly based on digital integrated chips, the functions are single, the intelligent constant-speed swinging of the electric fans can be achieved only mechanically, or the intelligent constant-speed swinging of the electric fans can face to one direction at regular time, the blowing direction of the fans can not be controlled intelligently according to the positions of human bodies, the fans are not humanized enough, the good effect of blowing and cooling the human bodies is not achieved, and the requirements of people on the intelligent fans can not be met.
How can make the fan use more intelligently then, if under certain temperature and the user gets into behind the detection range fan can be from opening, perhaps the fan can be followed user's swing head when the user removes and realize better cooling effect of blowing again.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a microwave radar response and infrared ray induction control system and applied this system's smart fan.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a microwave radar sensing and infrared sensing control system, comprising: a microwave radar sensor, comprising: a frequency transmitting unit for transmitting a frequency signal to the object, a frequency receiving unit for receiving the frequency signal reflected by the object, and a first control unit for controlling the output of the frequency transmitting unit and the input of the frequency receiving unit, wherein the first control unit compares the output frequency of the frequency transmitting unit with the receiving frequency of the frequency receiving unit to determine the position and the speed of the object;
a pyroelectric infrared sensor comprises: the Fresnel filter is used for enhancing the infrared rays of the object, and the infrared probe is used for receiving the enhanced infrared rays of the object;
a central controller having: the data processing unit is used for receiving an output signal of the microwave radar sensor and an output signal of the pyroelectric infrared sensor; and a motor driving module for executing an output signal of the data processing unit.
In a preferred embodiment, the first control unit includes: the timing control module is used for controlling the frequency sending unit to transmit the frequency signal at a fixed time and controlling the frequency receiving unit to receive the frequency signal at a fixed time; the signal data conversion module is used for converting the output frequency signal of the frequency receiving unit into a digital signal; the voltage-controlled oscillator module is used for controlling the output frequency of the frequency sending unit according to the size of the input digital signal; the first detection processing module is used for comparing the output signal of the frequency sending unit with the output signal of the frequency receiving unit and determining the position and the speed of the current object; a first delay module; the second control unit comprises: the second detection processing module is connected with the photoresistor module and the thermistor module, the infrared probe loses charge balance when receiving the change of the infrared radiation temperature of the object, charges are released outwards, and the switch module is triggered after the detection processing of the second detection processing module; and the second delay module is used for controlling the delay closing of the switch module.
In a preferred embodiment, the control unit of the central controller controls the pyroelectric infrared sensor to perform forward scanning and backward scanning on the detection region to obtain positions of the left edge and the right edge of the object, thereby determining the lateral position of the object and determining the number of the objects.
In a preferred technical scheme, the central controller is further provided with a temperature sensing module for sensing the ambient temperature.
In a preferred technical solution, the apparatus further comprises a voice controller, and the voice controller comprises: a microphone module for receiving an external sound signal; a horn module for feeding back the received signal; a third control unit for analyzing the received external voice credit signal and converting it into a corresponding output signal; the third control unit controls the horn module to send out corresponding feedback sound signals, and the third control unit sends out corresponding output signals to the central controller.
An use above-mentioned microwave radar response and infrared ray induction control system's smart fan includes: base, pole setting and aircraft nose, the aircraft nose has shell and flabellum, and the aircraft nose passes through first motor drive yaw, and the flabellum passes through second motor drive and rotates, pole setting or aircraft nose on be provided with intelligent control system, this intelligent control system includes: microwave radar inductor, pyroelectric infrared sensor and central controller.
In the preferred technical scheme, the microwave radar sensor is arranged on the vertical rod, and a radar shielding cover is arranged on the vertical rod corresponding to the top of the microwave radar sensor, so that the microwave radar sensor cannot be influenced by the swinging of the machine head; the pyroelectric infrared sensor is mounted on the machine head.
In a preferred embodiment, the microwave radar sensor includes a frequency transmitting unit that transmits a frequency signal to an object, a frequency receiving unit that receives the frequency signal reflected by the object, and a first control unit that controls an output of the frequency transmitting unit and an output of the frequency receiving unit, wherein the first control unit determines a position and a velocity of the object by comparing an output frequency of the frequency transmitting unit and an output frequency of the frequency receiving unit; the pyroelectric infrared sensor comprises: the Fresnel filter is used for enhancing the infrared rays of the object, and the infrared probe, the second control unit and the switch module are used for receiving the enhanced infrared rays of the object; the central controller has: the motor driving device comprises a data processing unit for receiving an output signal of the first control unit and an output signal of the switch module, and a motor driving module for executing the output signal of the data processing unit.
In the preferred technical scheme, the vertical rod is a telescopic vertical rod.
In a preferred technical scheme, the method further comprises the following steps: the remote controller is provided with a signal transmitter, and the central controller is correspondingly provided with a signal receiver; and magnetic elements are arranged in the remote controller, on the vertical rod or the machine head.
Known through foretell technical scheme, compare with prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a microwave radar inductor and pyroelectric infrared sensor respond to the human body and enter the detected region simultaneously, and the misjudgment that causes when single microwave radar inductor response foreign object (non-human body) removes can be overcome in the sensing of dual sensors, through dual judgement, can discern the human body more effectively, and then the operation of control load;
2. the utility model discloses a with prior art contrast, the utility model discloses a aircraft nose drives pyroelectric infrared sensor and rotates, detectable activity and static human body. The device only uses two pyroelectric sensors, and accurate positioning can be realized through detection data comparison. The pyroelectric infrared sensors at different detection positions are matched with each other to realize an anti-interference function, and the system can judge whether the detection area is a single person or two persons or obtain the transverse position of the center of the human body by identifying the edges of the left side and the right side of the human body;
3. the microwave radar sensing and infrared sensing control system of the utility model is applied to the intelligent fan, can effectively sense the detection range of the human body, can achieve the effect of accurate detection through the double judgment of the microwave radar sensor and the pyroelectric infrared sensor, can realize the automatic start of the fan and the movement following the human body, achieve the good effect of blowing air for cooling the human body, and meet the requirements of intelligent life;
4. the vertical rod of the intelligent fan adopts a telescopic form, so that the storage volume can be reduced, and the intelligent fan is convenient to store and transport;
5. the utility model discloses an intelligent fan has the remote controller, can be convenient for the operation of remote control fan, and it is more convenient to use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a microwave radar sensing and infrared sensing control system according to the present invention;
FIG. 2 is a schematic structural diagram of a microwave radar sensor according to the present invention;
fig. 3 is a schematic structural diagram of the mid-infrared temperature sensing controller of the present invention;
fig. 4A is a schematic circuit diagram of the central controller of the present invention;
fig. 4B is a schematic circuit diagram of the microwave radar sensor according to the present invention;
fig. 4C is a schematic circuit diagram of the voice controller of the present invention;
FIG. 5 is a flow chart for explaining the operation of the microwave radar sensing and infrared sensing control system;
FIG. 6 is a schematic diagram of a smart fan of the microwave radar sensing and infrared sensing control system;
fig. 7 is a schematic cross-sectional view of a smart fan of the microwave radar sensing and infrared sensing control system.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a microwave radar sensing and infrared sensing control system includes: microwave radar inductor 1, pyroelectric infrared sensor 2 and central controller 3, microwave radar inductor 1 is the position and the moving speed that are used for detecting the object, and infrared induction switch 2 is used for responding to the infrared ray of specific wavelength to whether the detection someone gets into in the induction zone and number and position, central controller 3 then carries out the instruction according to microwave radar inductor 1 and pyroelectric infrared sensor 2's signal output.
As shown in fig. 2, the microwave radar sensor 1 includes: frequency transmitting section 11, frequency receiving section 12, and first control section 13.
The frequency transmitting unit 11 may be a transmitting antenna for transmitting a frequency signal to an object;
the frequency receiving unit 12 may be a receiving antenna for receiving a frequency signal reflected by an object;
the first control unit 13 includes: a timing control module 131, a signal-to-data conversion module 132, a voltage-controlled oscillator module 133, a first detection processing module 134, and a first delay module 135.
The distance between the microwave radar sensor 1 and the object is determined by measuring the time difference between the transmitted pulse and the echo pulse, the frequency signal transmitted by the frequency transmitting unit 11 is one of electromagnetic waves, and the distance between the microwave radar sensor 1 and the object is determined by the relation between the speed and the time;
the echo frequency of the object received by the frequency receiving unit 12 of the microwave radar sensor 1 is different from the transmission frequency of the frequency transmitting unit 11, and the change in the distance between the microwave radar sensor 1 and the object can be analyzed by the doppler principle.
The timing control module 131 controls the frequency transmission unit 11 to transmit the frequency signal to the object at intervals of the period T; the frequency signal transmitted by the frequency transmitting unit 11 is converted and output by the output signal of the first detection processing module 134 through the voltage controlled oscillator module 133;
the frequency receiving unit 12 receives the frequency signal reflected by the object, converts the frequency signal by the signal data conversion module 132, and transmits the converted frequency signal to the first detection processing module 134.
The first detection processing module 134 compares the output signal of the frequency transmitting unit 11 with the signal transmitted by the frequency receiving unit 12, and analyzes the position and the moving speed of the current object according to the doppler principle.
Then, the operation principle of the microwave radar sensor 1 is as follows:
when the system is standby, the output signal of the first detection processing module 134 is converted by the voltage controlled oscillator module 133, and then drives the frequency transmitting unit 11 to transmit a frequency signal (i.e., an electromagnetic wave signal) to the detection area for space scanning, the transmitting frequency bounces when encountering an object, the frequency receiving unit 12 receives the echo frequency, the echo frequency received by the frequency receiving unit 12 is converted into a digital signal by the signal data conversion module 132 and transmitted to the first detection processing module 134, and the first detection processing module 134 determines the position and the moving speed of the object according to the above comparison principle after receiving the feedback signal of the frequency receiving unit 12 and the output signal to the frequency transmitting unit 11.
When the first detection processing module 134 analyzes that the object enters the detection area or moves within the detection area, the first detection processing module 134 inputs a high level to the central controller 3, and when the first detection processing module 134 analyzes that the object leaves the detection area or stops, the first detection processing module 134 turns off the high level and outputs a low level.
The first control unit 13 is provided with a first delay module 135, and the first delay module 135 is used for delaying to turn off the high level when the first detection processing module 134 analyzes that the object leaves the detection area or the object in the detection area stops, such as: when the object is analyzed to leave the detection area or the object in the detection area stops, the high level can be turned off after the time t1 is prolonged by the first delay module 135. That is, after outputting high level, in the delay time period, if there is an object moving in the sensing range, the output will keep high level until the object leaves, the high level will be changed to low level in delay, and the object will automatically delay a delay time period after each moving, and the time of the last moving is the starting point of the delay time).
With sense lockout time (default setting: 3-4 seconds): the first detection processing module 134 may set a blocking time immediately after each sensing output (the high level changes to the low level), and the first detection processing module 134 does not receive any sensing signal during the blocking time. The function can realize the interval work of (sensing output time and blocking time) and can be applied to interval detection products; meanwhile, the function can effectively restrain various interferences generated in the process of load switching.
The microwave radar sensor 1 of the embodiment adopts the doppler radar technology, and has the characteristics of high sensitivity, capability of penetrating objects such as doors, walls and furniture, long sensing distance, strong reliability, large sensing angle, wide power supply voltage range and the like. The human removal of response that can be effectual, the interference killing feature is strong, the stable performance, does not receive ambient temperature to influence, small in size, the installation is simple, and the reaction is quick, and sensitivity is high. The induction distance is long, and the detection angle range is large.
The pyroelectric infrared sensor 2 comprises: a fresnel filter 21, an infrared probe 22, a second control unit 23, and a switch module 24. The principle of the pyroelectric infrared sensor 2 is a switch that is automatically activated when a person passes through an infrared sensing detection area.
The infrared rays are concentrated on the infrared probe 22 after being enhanced by the Fresnel filter 21, the infrared probe 22 is a commonly used heat release element, and when the infrared probe 22 receives the change of the infrared radiation temperature of a human body, the charge balance is lost, and charges are released outwards.
The second control unit 23 has a second detection processing module 231 and a second delay module 232, the second detection processing module 23 is connected to a photoresistor module and a thermistor module, the infrared probe 22 loses charge balance when receiving the change of the infrared radiation temperature of the object, releases charges outwards, and triggers the switch module 24 after the self-detection processing of the second detection processing module 23, so that the switch module 24 can be controlled to be opened and closed. A signal is sent to the central controller 3 by the opening/closing of the switch module 24.
The pyroelectric infrared sensor 2 is used according to the following principle: in a detected area, when an object enters the detected area, the pyroelectric infrared sensor 2 scans, infrared rays emitted by the object are gathered on the infrared probe 22 after passing through the Fresnel filter 21, the infrared probe 22 loses charge balance after receiving the change of the infrared radiation temperature of the object, charges are released outwards, the switch module 24 is triggered after the infrared radiation temperature is subjected to self-detection processing by the second detection processing module 23, the switch module 24 is started, the object does not leave an induction range, and the switch module 24 is continuously switched on; after the object leaves the rear sensing area, the switch is automatically turned off in a delayed mode.
The second delay module 232 is used to control the switch module 24 to be turned off after the infrared probe 22 detects the infrared ray of the object and the object leaves the detection area, and the second delay module 232 delays the infrared ray of the object for a time t2 when the infrared probe 22 does not detect the infrared ray of the object.
In the above, the detection region D of the microwave radar sensor 1 and the detection region D of the pyroelectric infrared sensor 2 are overlapped. The system is used for sensing whether a human body enters a detection area D or not, the microwave radar sensor 1 is used for sensing the position and movement of an object, but the microwave radar sensor 1 senses the position and movement of the object in the detection area D but cannot determine whether the object is the movement of the human body or not, and other objects in the detection area D are likely to be blown by wind to move, such as a door curtain, paper and the like which are blown by wind to move in the detection area D, so that misjudgment of the microwave radar sensor 1 is easily caused; the pyroelectric infrared sensor 2 is used for sensing whether an object in the detection region D is a human body, and since the human body has a constant body temperature, generally 37 degrees, the object emits infrared rays having a specific wavelength of about 10 μm, the passive infrared probe operates by detecting infrared rays having a wavelength of about 10 μm emitted from the human body, and a moving object having a temperature lower than the temperature of the human body is removed by the pyroelectric infrared sensor 2. Therefore, whether a human body enters the detection region D can be effectively determined by the microwave radar sensor 1 and the pyroelectric infrared sensor 2.
The central controller 3 receives signals of the microwave radar sensor 1 and the pyroelectric infrared sensor 2 and then sends out instructions to drive the load to operate.
The central controller 3 has a data processing unit 31 for receiving the output signal of the first control unit 13 and the output signal of the switch module 24, a control unit, and a motor driving module 32 for executing the output signal of the data processing unit 31.
The motor drive module 32 includes: the driving system comprises a first motor driving module 321 and a second motor driving module 322, wherein the first motor driving module 321 is used for driving the rotation of a first motor in an external load, and the second motor driving module 322 is used for driving the rotation of a second motor in the external load.
The microwave radar sensor 1 and the pyroelectric infrared sensor 2 can effectively judge whether a human body enters the detection area D and whether the human body moves in the detection area D.
When the microwave radar sensor 1 senses that an object is in the detection area, a signal A1 is sent to the data processing unit 31 of the central controller 3, the pyroelectric infrared sensor 2 senses that a human body enters the detection area, the switch module 24 is started, and the pyroelectric infrared sensor 2 sends a signal A2 to the central controller 3 due to the start of the switch module 24.
When the data processing unit 31 receives the signals a1 and a2, the central controller 3 can drive the motor driving module 32 to operate.
Two pyroelectric infrared sensors 2 are set in the system, and more specific operation steps are as follows:
1) after the power is switched on, when the system is in a standby state, the microwave radar sensor 1 detects that an object moves in a detection area according to the Doppler principle and sends a signal to the central controller 3, the pyroelectric infrared sensor 2 receives specific infrared wavelength of a human body, so that the object can be judged to be a human body, the central controller 3 also sends a signal, starting conditions are met, the first motor driving module and the second motor driving module can be started, and the positioning step is carried out after the human body movement signal disappears for 2 seconds;
2) after the positioning step, the two pyroelectric infrared sensors 2 rotate clockwise and anticlockwise for two times of scanning, and the pyroelectric infrared sensors 2 record the transverse position when a human body is detected;
3) setting a program in a control unit of the central controller, respectively processing the program to obtain two times of scanning, scanning the left edge of the human body rightwards from the horizontal position when the human body edge is detected in each time of scanning, scanning the right edge of the human body leftwards, identifying that the detection area is double if two human body left or right edge positions exist in one time of scanning, identifying that the detection area is single if only one human body left or right edge exists, and returning to the step 1) if no human body is detected;
4) obtaining the center position of the human body according to the horizontal positions of the single person or the double persons and the left edge and the right edge identified in the step 3), obtaining the horizontal positions of the centers of the two human bodies when the two persons are used, and obtaining one when the single person is used;
5) if a single person is identified in the step 4), the first motor driving module 321 is used for controlling the operation of the first motor 54 to drive the pyroelectric infrared sensor 2 to align with the person to be positioned, the anti-interference function in the central controller is automatically started, and the system is in standby; if the double persons are identified, the pyroelectric infrared sensor 2 is aligned with the two positioned persons in turn;
6) and (5) the system is in standby state and returns to the step I.
The microwave radar sensing and infrared sensing control system may further include: a voice controller 4.
The voice controller 4 includes: a microphone module 41, a speaker module 42, and a third control unit 43, wherein the microphone module 41 is used for receiving voice information uttered by a user.
The third control unit 43 is arranged to analyze the received external voice credit signal and to convert it into a corresponding output signal.
The third control unit 43 has a voice recognition module therein, the voice recognition module is used for recognizing the voice information collected by the microphone module 41, converting the voice information into a corresponding instruction, and transmitting the corresponding instruction to the central controller 3, and after the third control unit 43 recognizes the voice information, the speaker module 42 is used for making a sound to repeat the voice information input by the user.
Of course, the speech controller 4 can recognize only a specific command or entry word by inputting, and can distinguish the case of an erroneous operation due to the ordinary words. If the system is applied to the intelligent fan, the switch of the intelligent fan is controlled through the voice recognition function, then a specific instruction can be set as 'fan', when voice operation is executed, a voice 'startup' two word is simply sent out, the voice controller 4 cannot be triggered to send out a signal to the central controller 3, and a voice 'fan startup' four word must be sent out, so that the voice controller 4 can be triggered to send out a signal to the central controller 3, and the central controller 3 drives the fan to start; because the "fan" word we set as a specific instruction, only the collection of the two words can meet the trigger condition.
Of course, the specific command can be set as other keywords, and the selection is performed according to different requirements.
An use above-mentioned microwave radar response and infrared ray induction control system's smart fan includes: base 51, pole 52 and aircraft nose 53, aircraft nose 53 includes: the housing 531 and the fan 532, the whole head 53 is driven by the second motor 55 to swing, and the fan 532 is driven by the first motor 54 to rotate.
The handpiece 53 further comprises a housing 533, the housing 533 is connected to the housing 531, the fan 532 is installed in the housing 531, and the first motor 54 is installed in the housing 533 or the housing 531 and connected to the fan and drives the fan 532 to rotate;
the casing 533 is installed on the top of the vertical rod 52, a swing structure is installed in the casing 533, the swing structure in the prior art can be adopted, and the second motor 55 drives the swing structure, so that the whole machine head 53 swings left and right in a certain range on the top of the vertical rod 52.
The upright rod 52 can be set as a telescopic rod, so that the fan can be stored conveniently and the storage volume can be saved when the fan is not assembled.
Be provided with intelligent control system among the smart fan, this intelligent control system is foretell microwave radar response and infrared ray induction control system, and intelligent control system includes: a microwave radar sensor 1, a pyroelectric infrared sensor 2 and a central controller 3.
The microwave radar sensor 1 is arranged on the vertical rod 52 and is positioned below the machine head 53, and the microwave radar sensor 1 senses the human body in the detection area and the movement of the human body according to the principle; in order to prevent the rotation of the fan blades or the swinging of the machine head from interfering the detection of the microwave radar sensor 1, a radar shielding cover 522 is arranged on the upright rod 52 corresponding to the microwave radar sensor 1, so that the first motor and the second motor in the machine head 53 can be prevented from affecting the microwave radar sensor 1;
the pyroelectric infrared sensors 2 are arranged on the shell 531 of the handpiece 53, two pyroelectric infrared sensors 2 are symmetrically arranged on the shell 531, and the arrangement of the two pyroelectric infrared sensors 2 can increase the detection range;
a first motor driving module 321 in the central controller 3 is used for controlling the operation of the first motor 54, i.e. driving the swing of the head 53; the second motor drive module 322 is used to control the operation of the second motor 55, i.e., to drive the rotation of the fan blades 532.
Principle of the specific embodiment: after the power supply is started, the intelligent control system carries out scanning detection according to the principle of the microwave radar sensing and infrared sensing control system;
after the power is switched on, when the system is in a standby state, the microwave radar sensor 1 detects that an object exists in a detection area according to the Doppler principle, and the pyroelectric infrared sensor 2 receives specific infrared wavelength of a human body, so that the object can be judged to be a human body, namely, a static human body appears in a scanning range and meets the starting condition, the second motor driving module 322 drives the fan blade 532 to rotate to realize blowing, and the first motor driving module 321 drives and controls the operation of the first motor 54 to prepare for entering a positioning step.
The first motor drive module 321 drives the handpiece to start a 180 clockwise rotation followed by a 180 counterclockwise rotation. The two pyroelectric infrared sensors 2 rotate clockwise and anticlockwise for twice scanning, and the transverse positions of the pyroelectric infrared sensors 2 when a human body is detected are recorded; and setting a program in a control unit of the central controller to process respectively to obtain two scans, wherein in each scan, from the absence to the transverse position when the human body edge is detected, the left edge of the human body is scanned rightwards to obtain the right edge of the human body, if two human body left or right edge positions exist in one scan, two persons are identified in a detection area, and if only one human body left or right edge exists, one person is identified.
The identified transverse positions of the single person or the double persons and the left edge and the right edge are used for obtaining the central position of the human body, the transverse positions of the two human body centers are obtained when the two persons are used, and one is obtained when the single person is used; if a single person is identified, the first motor driving module 321 is used for controlling the operation of the first motor 54 to drive the pyroelectric infrared sensor 2 to align with the person to be positioned, the anti-interference function in the central controller is automatically started, and the system is in standby; if the double persons are identified, the pyroelectric infrared sensor 2 is aligned with the two positioned persons in turn;
if the human body moves, when the human body stops again, the machine head drives the pyroelectric infrared sensor 2 on the machine head to scan again (clockwise rotation is carried out to the limit position, then anticlockwise rotation is carried out by 180 degrees, then clockwise rotation is carried out to the corresponding position, and positioning is carried out again). Therefore, tracking air supply to the human body is realized, and the use efficiency of the fan is effectively improved.
When sending wind to a single person, the air blowing device can also prevent the interference when other people pass by.
Meanwhile, when two persons appear indoors, the two persons can be well positioned, air is evenly supplied, and the use efficiency of the fan is further improved. Because the detection angle of the pyroelectric infrared sensor 2 has a certain size, when two human bodies are positioned, if the transverse distance between the two human bodies is too close, the system can not identify the two human bodies. The pyroelectric infrared sensor 2 with two different transverse detection positions can prevent other people from being interfered after being aligned with a single person to be positioned for standby. When other people transversely enter the detection area, the pyroelectric infrared sensor on the right side detects the movement of the human body before the pyroelectric infrared sensor on the left side because the detection positions of the two sensors are different in size. The central controller 3 collects the time difference of the signals detected by the two pyroelectric infrared sensors for the first time, if the time difference exceeds a threshold value, the interference of other people (objects) is judged, and the system waits until the interference signal disappears and then continues to stand by. If the time difference is smaller than the threshold value, the self-movement of the person to be positioned is judged.
A temperature sensing module can be additionally arranged on the central controller 3, the temperature sensing module 33 is provided with a temperature sensing probe, senses the current environmental temperature through the temperature sensing probe, converts temperature data into a digital signal and transmits the digital signal to the central controller 3, and the central controller 3 controls and changes the rotating speed of the second motor 55, namely changes the wind speed;
if the central controller 3 sets that the wind speed is increased when the ambient temperature is higher than 30 ℃, and is decreased by one gear when the ambient temperature is lower than 30 ℃.
A display screen 521 may be provided on the housing 531 of the fan or on the upright 52 for displaying the current temperature.
The intelligent fan can be matched with a remote controller 6, a signal transmitter is arranged on the remote controller 6, correspondingly, the central controller 3 is connected with a signal receiver, and the signal receiver receives a signal sent by the remote controller 6 through the signal transmitter and feeds the signal back to the central controller 3, so that the central controller 3 makes a corresponding command to control the wind speed, the head swing/the standstill and the like of the fan.
The matching remote controller in the intelligent fan adopts more technologies in the prior art at present, the remote control principle belongs to the prior art, and detailed description is not provided.
In order to place and store the remote controller, the vertical rod 52 or the housing 531 is provided with a storage shell 534 in which a magnetic part is arranged, and the surface or the inside of the remote controller 6 is also provided with a magnetic part, so that the remote controller 6 can be quickly adsorbed on the fan when not in use, and the remote controller is prevented from being lost.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A microwave radar induction and infrared induction control system is characterized in that: the method comprises the following steps:
a microwave radar sensor, comprising:
a frequency transmitting unit for transmitting a frequency signal to the object,
frequency receiving unit for receiving frequency signal reflected by object and frequency receiving method
A first control unit for controlling the output of the frequency transmitting unit and the input of the frequency receiving unit, wherein the first control unit determines the position and the speed of the object by comparing the output frequency of the frequency transmitting unit with the receiving frequency of the frequency receiving unit;
a pyroelectric infrared sensor comprises:
a Fresnel filter for enhancing infrared rays of the object by the Fresnel filter,
an infrared probe for receiving the enhanced infrared ray of the object,
a second control unit and a switch module;
a central controller having:
data processing unit for receiving output signal of microwave radar sensor and output signal of pyroelectric infrared sensor, control unit and
and the motor driving module is used for executing the output signal of the data processing unit.
2. The microwave radar sensing and infrared sensing control system of claim 1, wherein: the first control unit comprises:
the timing control module is used for controlling the frequency sending unit to transmit the frequency signal at a fixed time and controlling the frequency receiving unit to receive the frequency signal at a fixed time;
the signal data conversion module is used for converting the output frequency signal of the frequency receiving unit into a digital signal;
the voltage-controlled oscillator module is used for controlling the output frequency of the frequency sending unit according to the size of the input digital signal;
the first detection processing module is used for comparing the output signal of the frequency sending unit with the output signal of the frequency receiving unit and determining the position and the speed of the current object;
a first delay module;
the second control unit comprises:
the second detection processing module is connected with the photoresistor module and the thermistor module, the infrared probe loses charge balance when receiving the change of the infrared radiation temperature of the object, charges are released outwards, and the switch module is triggered after the detection processing of the second detection processing module;
the second delay module is used for controlling the delay closing of the switch module;
the microwave radar sensor detects whether an object exists in a current sensing area, and the pyroelectric infrared sensor detects whether the current object is a determined object;
and the central controller receives signals of the microwave radar sensor and the pyroelectric infrared sensor to drive the motor driving module to operate.
3. The microwave radar sensing and infrared sensing control system of claim 1, wherein: two pyroelectric infrared sensors are arranged;
the control unit of the central controller controls the pyroelectric infrared sensor to carry out forward scanning and reverse scanning on the detection area so as to acquire the left edge and the right edge of the object, thereby determining the transverse position of the object and judging the number of the objects.
4. The microwave radar sensing and infrared sensing control system of claim 1, wherein: the central controller is also provided with a temperature sensing module for sensing the ambient temperature.
5. The microwave radar sensing and infrared sensing control system of claim 1, wherein: still include a speech controller, speech controller includes:
a microphone module for receiving an external sound signal;
a horn module for feeding back the received signal;
a third control unit for analyzing the received external voice credit signal and converting it into a corresponding output signal;
the third control unit controls the horn module to send out corresponding feedback sound signals, and the third control unit sends out corresponding output signals to the central controller.
6. A smart fan, characterized in that: the method comprises the following steps: base, pole setting and aircraft nose, the aircraft nose has shell and flabellum, and the aircraft nose passes through first motor drive yaw, and the flabellum passes through second motor drive and rotates, pole setting or aircraft nose on be provided with intelligent control system, this intelligent control system includes: microwave radar inductor, pyroelectric infrared sensor and central controller.
7. A smart fan as claimed in claim 6, wherein: the microwave radar sensor is arranged on the vertical rod, and a radar shielding cover is arranged on the vertical rod corresponding to the top of the microwave radar sensor, so that the microwave radar sensor is not influenced by the swinging of the machine head; the pyroelectric infrared sensor is mounted on the machine head.
8. A smart fan as claimed in claim 7, wherein: the microwave radar sensor comprises a frequency transmitting unit for transmitting a frequency signal to an object, a frequency receiving unit for receiving the frequency signal reflected by the object, and a first control unit for controlling the output of the frequency transmitting unit and the output of the frequency receiving unit, wherein the first control unit determines the position and the speed of the object by comparing the output frequency of the frequency transmitting unit with the output frequency of the frequency receiving unit;
the pyroelectric infrared sensor comprises: the Fresnel filter is used for enhancing the infrared rays of the object, and the infrared probe, the second control unit and the switch module are used for receiving the enhanced infrared rays of the object;
the central controller has: the motor driving device comprises a data processing unit for receiving an output signal of the first control unit and an output signal of the switch module, and a motor driving module for executing the output signal of the data processing unit.
9. A smart fan as claimed in claim 6, wherein: the upright stanchion is a telescopic upright stanchion.
10. A smart fan as claimed in claim 6, wherein: further comprising: the remote controller is provided with a signal transmitter, and the central controller is correspondingly provided with a signal receiver; and magnetic elements are arranged in the remote controller, on the vertical rod or the machine head.
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| CN201921099850.6U CN210686399U (en) | 2019-08-21 | 2019-08-21 | Microwave radar induction and infrared induction control system and intelligent fan |
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| CN201921099850.6U CN210686399U (en) | 2019-08-21 | 2019-08-21 | Microwave radar induction and infrared induction control system and intelligent fan |
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| CN110513318A (en) * | 2019-08-21 | 2019-11-29 | 广东乐美智家环境科技股份有限公司 | A kind of intelligent fan of microwave radar induction and infrared induction control system and the application system |
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| CN110513318A (en) * | 2019-08-21 | 2019-11-29 | 广东乐美智家环境科技股份有限公司 | A kind of intelligent fan of microwave radar induction and infrared induction control system and the application system |
| CN113514901A (en) * | 2021-04-26 | 2021-10-19 | 河北红岸基地科技有限公司 | Human body detection method based on dual detection |
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