CN112696375A - Method for intelligently switching on and off fan by detecting human body activity through wireless radar - Google Patents
Method for intelligently switching on and off fan by detecting human body activity through wireless radar Download PDFInfo
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- CN112696375A CN112696375A CN202011295263.1A CN202011295263A CN112696375A CN 112696375 A CN112696375 A CN 112696375A CN 202011295263 A CN202011295263 A CN 202011295263A CN 112696375 A CN112696375 A CN 112696375A
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- fan
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- human body
- radar
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
Abstract
The invention relates to a method for intelligently switching on and off a fan by detecting human body activity through a wireless radar, which comprises the following steps: detecting the front space of the fan through a wireless radar; when detecting that the front space of the fan has a detectable moving object moving signal, automatically turning on the fan; and automatically turning off the fan when the wireless radar does not detect the detectable moving object within a first set time period after the fan is turned on. Civil radar is with lower costs, can be with less material and manufacturing cost, can make the automatic switch fan with radar detection function, bring following benefit for in the real life: 1. people who do not move conveniently can turn on the fan through gestures or other limb activities. The fan may be automatically turned off after the person leaves. 2. The life is convenient and intelligent, and people can feel the advantage that the fan is started immediately. 3. Energy consumption caused by forgetting to turn off the fan after people leave is avoided, and energy conservation and emission reduction are achieved.
Description
Technical Field
The invention relates to the field of intelligent fans, in particular to a method for intelligently switching on and off a fan by detecting human body activity through a wireless radar.
Background
With the progress of semiconductor technology, civil microwave radars or millimeter waves are mature more and more at present, the price is lower and lower, and the microwave radars or millimeter waves enter consumer electronic products and small household appliances of thousands of households under the condition.
The traditional fan is usually switched on and off in a mechanical key or electronic remote control mode, and a radar module and an intelligent algorithm are added in a fan circuit control board to automatically switch on and off the fan.
However, radar technology has the technical disadvantage of detecting whether a person is in front of a fan, i.e., radar technology detects the presence of a person only by movement, but misjudges that no person is present if the person is at rest or is not moving slightly enough to trigger the radar detection sensitivity of consumer electronics for civilian use.
Disclosure of Invention
The invention aims to solve the technical problems that the existing technology has low sensitivity and is inconvenient to switch, and provides a method for detecting human activity by a wireless radar to switch a fan on and off intelligently.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for constructing an intelligent switch fan for detecting human body activity by using a wireless radar comprises the following steps:
detecting the front space of the fan through a wireless radar;
when detecting that the front space of the fan has a detectable moving object moving signal, automatically turning on the fan;
and automatically turning off the fan when the detectable moving object is not detected by the wireless radar within a first set time period after the fan is turned on.
Preferably, the fan front space detected by the wireless radar is a conical three-dimensional space with 120-160 degrees of fan front; and/or the presence of a gas in the gas,
the space of the front face of the fan detected by the wireless radar is a distance from the fan to the front face of the fan within 6 meters.
Preferably, the wireless radar adopts a microwave or millimeter wave radar detection electronic module.
Preferably, the detectable moving object is a human body, and is set to two different volume detection levels A, B according to the size of the detectable moving object;
when the grade of the volume of the detectable moving object is A and the detectable moving object of the grade A moves a specific induction distance, generating a human body movement signal A1;
when the detectable moving object of the grade B is in the volume grade B, the human body movement signal B1 is generated when the detectable moving object of the grade B moves a certain sensing distance.
Preferably, level a is 50% of the normal human body volume and level B is the normal human body arm volume.
Preferably, it is detected whether a human body leaves the detection area from the front space edge of the fan according to the moving direction of the human body, and if the human body moves away from the front space edge of the fan, a leaving signal C1 is generated to turn off the fan.
Preferably, in the standby state of the fan, the wireless radar continuously detects whether a signal a1 is generated by the movement of a human body in the front space of the fan, continuously detects whether a signal C1 is generated within a second set time period if the signal a1 is generated, turns on the fan if the signal C1 is not generated within the second set time period, and does not turn on the fan otherwise.
Preferably, after the fan is started by the wireless radar detection, timing is started according to a third set time length;
if the C1 signal is detected, and then the human body movement signal A1 or B1 is not detected again within the fourth set time length, the fan is turned off; or;
and within the fourth set time period, if any signals of C1, A1 and B1 are not detected, the fan is turned off.
Preferably, before the fan timer is turned off, if the A1 signal is detected, a third set time period is counted again from the time of detecting the A1 signal;
before the fan is timed off, if a B1 signal is detected, increasing the timing for a fourth set time period;
before the fan is timed off, if the fan receives any other control instruction, a third set time length is newly timed from the time of receiving the control instruction;
before the fan is timed to be closed, if any signal is not detected and a control command is not received, the fan is closed after the timing is finished.
Preferably, under the condition that the fan is actively turned off, the automatic radar detection function is suspended within a sixth set time period, and the fan is turned on again after the sixth set time period.
The method for detecting the intelligent switch fan of the human body activity by the wireless radar has the following beneficial effects: civil radar is with lower costs, can be with less material and manufacturing cost, can make the automatic switch fan with radar detection function, bring following benefit for in the real life:
1. people who do not move conveniently can turn on the fan through gestures or other limb activities. The fan may be automatically turned off after the person leaves.
2. The life is convenient and intelligent, and people can feel the advantage that the fan is started immediately.
3. Energy consumption caused by forgetting to turn off the fan after people leave is avoided, and energy conservation and emission reduction are achieved.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described in detail.
The method for detecting the intelligent switch fan of the human body activity by the wireless radar in the preferred embodiment of the invention comprises the following steps:
detecting the front space of the fan through a wireless radar;
when detecting that the front space of the fan has a detectable moving object moving signal, automatically turning on the fan;
and within a first set time period after the fan is turned on, the wireless radar detects that no movable object can be detected, and the fan is automatically turned off.
Civil radar is with lower costs, can be with less material and manufacturing cost, can make the automatic switch fan with radar detection function, bring following benefit for in the real life:
1. people who do not move conveniently can turn on the fan through gestures or other limb activities. The fan may be automatically turned off after the person leaves.
2. The life is convenient and intelligent, and people can feel the advantage that the fan is started immediately.
3. Energy consumption caused by forgetting to turn off the fan after people leave is avoided, and energy conservation and emission reduction are achieved.
The scheme realizes a more friendly solution through an intelligent algorithm.
Furthermore, the wireless radar is a microwave radar or a millimeter wave radar, and the wireless radar adopts a microwave or millimeter wave radar detection electronic module and can detect the movement of objects such as a human body.
According to the parameters of the wireless radar, the front space of the fan detected by the wireless radar is a conical three-dimensional space with the angle of 120-160 degrees on the front side of the fan, and the distance from the fan to the front side of the fan is within 6 meters. In other embodiments, the fan front space detected by the wireless radar may be one of the aforementioned angle range or distance range.
Further, the wireless radar may detect a moving direction of the object, and the specific sensing distance may be set to 20cm as a sensitivity of the detectable moving distance.
In general, the detectable moving object is a human body, and two different volume detection levels A, B are set according to the size of the detectable moving object.
Further, level a is 50% of the normal human body volume, and level B is the normal human body arm volume. The level A is set to consider the sizes of children and different crowds, the level A human body is used for detecting normal human body movement, and the level B is used for detecting the movement of only partial limbs such as hands, feet and the like under the postures of sitting, sleeping and the like of the human body.
When the grade of the volume of the detectable moving object is a, and the grade a of the volume of the detectable moving object moves a certain sensing distance, a human body movement signal a1 is generated.
When the detectable moving object has a volume of a level B, the B level may generate a human movement signal B1 when the detectable moving object moves a certain sensing distance.
In addition, whether the human body leaves the detection area from the edge of the front space of the fan is detected according to the moving direction of the human body, and if the human body moves away from the edge of the detection range, a leaving signal C1 is generated to turn off the fan.
Further, in the standby state of the fan, the wireless radar continuously detects whether a signal A1 is generated by the movement of a human body in the front space of the fan, continuously detects whether a signal C1 is generated within a second set time period if the signal A1 is generated, turns on the fan if the signal C1 is not generated within the second set time period, and does not turn on the fan otherwise.
Preferably, the second set time period is 3 seconds, and it is determined whether the human body stays in the fan front space or passes through the fan front space.
After the fan is started by radar detection, the fan is started in a manual remote control mode, a key pressing mode and the like, and timing is started according to a third set time length in the same way; the third set period of time is typically 60 minutes.
If the C1 signal is detected, and then the human body movement signal A1 or B1 is not detected again within the fourth set time length, the fan is turned off; alternatively, after turning on the fan, if any signal of C1, a1, B1 is not detected for a fourth set time period, the fan is turned off. Preferably, the fourth set time period may be set to 30 minutes.
Before the fan is timed off, if an A1 signal is detected, a third set time length is newly timed from the time of detecting the A1 signal;
before the fan is timed off, if a B1 signal is detected, the timing is increased for a fourth set time period, and the fourth set time period is not exceeded at most;
before the fan is timed off, if no signal is detected and no control instruction is received, timing a third set time length again from the time of receiving the control instruction;
before the fan is timed off, if no other action exists, the fan is shut off after the timing is finished.
And under the condition of actively turning off the fan, the automatic radar detection function is suspended within the sixth set time, and the automatic radar detection function is turned on again after the sixth set time, so that the user is allowed to set other time intervals of 5 minutes. Preferably, the sixth set period of time is typically 5 minutes.
The method of the invention fully utilizes the progress of radar technology, and adds the wireless radar module and the intelligent algorithm in the fan circuit control board to realize the automatic on-off of the fan, improve the life convenience of people, save energy and electricity.
It is to be understood that the above-described respective technical features may be used in any combination without limitation.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method for detecting human activity and turning on and off a fan intelligently by a wireless radar is characterized by comprising the following steps:
detecting the front space of the fan through a wireless radar;
when detecting that the front space of the fan has a detectable moving object moving signal, automatically turning on the fan;
and automatically turning off the fan when the detectable moving object is not detected by the wireless radar within a first set time period after the fan is turned on.
2. The method for detecting human activity by using a wireless radar to turn on or off a fan intelligently according to claim 1, wherein the fan front space detected by the wireless radar is a conical stereo space with 120-160 degrees of the fan front; and/or the presence of a gas in the gas,
the space of the front face of the fan detected by the wireless radar is a distance from the fan to the front face of the fan within 6 meters.
3. The method of claim 1, wherein the wireless radar detects the human activity by using a microwave or millimeter wave radar detection electronic module.
4. The method of any one of claims 1 to 3, wherein the detectable moving object is a human body, and is set to two different volume detection levels A, B according to the size of the detectable moving object;
when the grade of the volume of the detectable moving object is A and the detectable moving object of the grade A moves a specific induction distance, generating a human body movement signal A1;
when the detectable moving object of the grade B is in the volume grade B, the human body movement signal B1 is generated when the detectable moving object of the grade B moves a certain sensing distance.
5. The method of claim 4, wherein level A is 50% of the normal human body volume and level B is the normal human body arm volume.
6. The method for detecting human activity by using wireless radar as claimed in claim 4, wherein whether human body leaves the detection area from the edge of the front space of the fan is detected according to the moving direction of human body, if human body activity leaves from the edge of the front space of the fan, a leaving signal C1 is generated, and the fan is turned off.
7. The method of claim 6, wherein in the standby state of the fan, the wireless radar continuously detects whether a signal A1 is generated by the movement of a human body in the front space of the fan, continuously detects whether a signal C1 is generated within a second set time period if the signal A1 is generated, turns on the fan if the signal C1 is not generated within the second set time period, and does not turn on the fan otherwise.
8. The method for detecting human activity by using a wireless radar to turn on or off a fan according to claim 7, wherein the wireless radar starts to time according to a third set time period after detecting that the fan is turned on;
if the C1 signal is detected, and then the human body movement signal A1 or B1 is not detected again within the fourth set time length, the fan is turned off; or;
and within the fourth set time period, if any signals of C1, A1 and B1 are not detected, the fan is turned off.
9. The method of claim 8, wherein before the fan is turned off, if an a1 signal is detected, a third set time period is re-timed from the time the a1 signal is detected;
before the fan is timed off, if a B1 signal is detected, increasing the timing for a fourth set time period;
before the fan is timed off, if the fan receives any other control instruction, a third set time length is newly timed from the time of receiving the control instruction;
before the fan is timed to be closed, if any signal is not detected and a control command is not received, the fan is closed after the timing is finished.
10. The method of claim 9, wherein when the fan is actively turned off, the radar auto-detection function is suspended for a sixth set time period, and then turned on again after the sixth set time period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011295263.1A CN112696375B (en) | 2020-11-18 | 2020-11-18 | Method for intelligently switching on and off fan by detecting human body activity through wireless radar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011295263.1A CN112696375B (en) | 2020-11-18 | 2020-11-18 | Method for intelligently switching on and off fan by detecting human body activity through wireless radar |
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| CN112696375A true CN112696375A (en) | 2021-04-23 |
| CN112696375B CN112696375B (en) | 2022-09-27 |
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| CN202011295263.1A Active CN112696375B (en) | 2020-11-18 | 2020-11-18 | Method for intelligently switching on and off fan by detecting human body activity through wireless radar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611299A (en) * | 2021-07-29 | 2021-11-05 | 珠海格力电器股份有限公司 | Voice equipment awakening method and device, electronic equipment and storage medium |
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| CN112696375B (en) | 2022-09-27 |
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