CN113049117A - Method for detecting static human body by pyroelectric detection - Google Patents
Method for detecting static human body by pyroelectric detection Download PDFInfo
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- CN113049117A CN113049117A CN202110316997.1A CN202110316997A CN113049117A CN 113049117 A CN113049117 A CN 113049117A CN 202110316997 A CN202110316997 A CN 202110316997A CN 113049117 A CN113049117 A CN 113049117A
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- infrared sensor
- pyroelectric infrared
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- 230000003068 static effect Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/12—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
Abstract
The invention relates to the technical field of human body induction and discloses a method for detecting a static human body by using pyroelectric infrared sensors, which comprises the following steps of S1, keeping the pyroelectric infrared sensors in a standby state; s2, acquiring the electric signal fed back by the pyroelectric infrared sensor, and judging whether the fed back electric signal is in a high level state; s3, when the feedback electric signal is in high level state, triggering the pyroelectric infrared sensor movement mechanism to detect the static human body infrared signal; s4, acquiring an electric signal fed back by the pyroelectric infrared sensor; s5, when the feedback electric signal is in low level state, returning to step S1; the method for detecting the static human body through the pyroelectric effect can drive the pyroelectric infrared sensor to move relative to the static human body through the movement mechanism, when the method is combined with a Fresnel lens for use, the effect that the human body can be detected by the sensor in a static state is achieved, and the phenomenon that the static detection mechanism still runs when no person exists in a detection area can be reduced through the arrangement of the dynamic human body triggering the movement mechanism of the pyroelectric infrared sensor.
Description
Technical Field
The invention relates to the technical field of human body induction, in particular to a method for detecting a static human body by pyroelectric detection.
Background
The infrared inductive switch is called as a pyroelectric infrared inductive switch, and any object in the nature always emits infrared radiation outwards as long as the temperature is higher than absolute zero (-273 ℃), the higher the temperature of the object is, the smaller the peak wavelength of the infrared radiation emitted by the object is, the larger the energy of the emitted infrared radiation is, and a human body has a certain body temperature which is usually 36-37 ℃, so that the infrared ray with a specific wavelength can be emitted, and the temperature of the human body is 9. The infrared ray of 5um is enhanced and gathered on the infrared induction source through the Fresnel lens, the infrared induction source usually adopts a pyroelectric infrared sensor, the element loses charge balance when receiving the change of the infrared radiation temperature of a human body, the charge is released outwards, a follow-up circuit can trigger a switch to act after detection processing, and the Fresnel lens is widely used in the field of human body induction detection;
the traditional pyroelectric sensor on the market generates a blind area and a high-sensitivity area which are alternately changed in front of a detection unit through a Fresnel lens so as to improve the detection receiving sensitivity of the pyroelectric sensor, when a person walks away from the front of the Fresnel lens, infrared rays emitted by a human body continuously and alternately enter the high-sensitivity area from the blind area, and therefore received infrared signals are input in a pulse mode of being suddenly strong and weak, so that the energy amplitude of the pyroelectric sensor is strengthened, but only a moving human body can be detected, and a static human body cannot be judged.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for detecting a static human body by pyroelectric, which solves the problem that the static human body cannot be judged.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a method for pyroelectric detection of static human body comprises
S1, the pyroelectric infrared sensor is in a standby state;
s2, acquiring the electric signal fed back by the pyroelectric infrared sensor, and judging whether the fed back electric signal is in a high level state;
s3, when the feedback electric signal is in high level state, triggering the pyroelectric infrared sensor movement mechanism to detect the static human body infrared signal;
s4, acquiring the electric signal fed back by the pyroelectric infrared sensor, and judging whether the fed back electric signal is in a low level state;
s5, when the feedback electric signal is in low level state, return to step S1.
According to the method for pyroelectric detection of a stationary human body disclosed by the present invention, preferably, in step S2, when the electric signal fed back by the pyroelectric infrared sensor is in a low level state, the step S1 is returned until the fed back electric signal is in a high level state, and step S3 is executed.
According to the method for detecting the static human body by the pyroelectric detection, preferably, in step S3, the pyroelectric infrared sensor is driven by the motion mechanism to move, so as to perform relative motion on the static human body, and the relative motion mode can be set to any one of moving, rotating, stretching or swinging.
According to the method for pyroelectric detection of a stationary human body disclosed by the present invention, preferably, in step S4, when the fed back electrical signal is in a high level state, step S4 is executed again.
(III) advantageous effects
Compared with the prior art, the invention provides a method for detecting a static human body by pyroelectric detection, which has the following beneficial effects:
the method for detecting the static human body by the pyroelectric sensor has the advantages that on one hand, the pyroelectric infrared sensor can be driven by the motion mechanism to move relative to the static human body, when the method is combined with the Fresnel lens for use, the effect that the human body can be detected by the pyroelectric infrared sensor in a static state is achieved, on the other hand, the dynamic human body triggers the motion mechanism of the pyroelectric infrared sensor, the phenomenon that the static detection mechanism still runs when no person exists in a detection area can be reduced, and the static human body is detected under the conditions of relative energy conservation, consumption reduction and service life prolonging.
Drawings
FIG. 1 is a schematic flow chart of the steps of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the method for pyroelectric detection of a static human body disclosed in the present invention comprises
S1, the pyroelectric infrared sensor is in a standby state;
in the embodiment of the present invention, for example, in a specific embodiment, when the pyroelectric infrared sensor is in a low level state, the pyroelectric infrared sensor is always in a standby state;
s2, acquiring the electric signal fed back by the pyroelectric infrared sensor, and judging whether the fed back electric signal is in a high level state;
in the embodiment of the present invention, when the electrical signal fed back by the pyroelectric infrared sensor is in the low level state, the process returns to step S1, and step S3 is executed until the electrical signal fed back is in the high level state;
for example, in a specific embodiment, the pyroelectric infrared sensor feeds back the electric signal of the moving human body to reach a high level state, and step S3 is executed;
s3, when the feedback electric signal is in high level state, triggering the pyroelectric infrared sensor movement mechanism to detect the static human body infrared signal;
in the embodiment of the invention, the pyroelectric infrared sensor is driven to move by the motion mechanism to carry out relative motion on a static human body, and the relative motion mode can be set to any one of moving, rotating, stretching or swinging and the like;
for example, in a specific embodiment 1, the pyroelectric infrared sensor movement mechanism may be a structure in which a lead screw drives a pyroelectric sensor to lift, a platform is sleeved outside the lead screw, and a motor drives the lead screw to rotate, so that the pyroelectric sensor is placed on the platform to lift;
for example, in a specific embodiment 2, the pyroelectric infrared sensor movement mechanism may be configured as a cam structure, the cam is vertically disposed, the platform is disposed above the cam, the motor drives the cam to rotate, and the pyroelectric sensor is driven by the platform to perform telescopic movement;
for example, in a specific embodiment 3, the pyroelectric infrared sensor movement mechanism may be configured as a gear structure, the pyroelectric sensor is fixedly connected to the gear, the gear is driven by the motor to rotate, and the pyroelectric sensor is driven by the gear to rotate;
for example, in a specific embodiment 4, the pyroelectric infrared sensor movement mechanism may be configured as a connecting rod structure, the motor output shaft drives the crank to rotate, the crank drives the rocker to swing through the connecting rod, and the pyroelectric sensor is disposed at one end of the rocker and driven by the rocker to swing;
s4, acquiring the electric signal fed back by the pyroelectric infrared sensor, and judging whether the fed back electric signal is in a low level state;
in the embodiment of the present invention, when the fed back electrical signal is in the high level state, step S4 is executed again;
for example, in a specific embodiment, when the fed back electrical signal is in a high level state, which indicates that a human body is always present, the pyroelectric sensor continues to operate, and when the fed back electrical signal is in a low level state, step S5 is performed;
s5, when the feedback electric signal is in low level state, returning to step S1;
in this embodiment of the present invention, for example, in a specific embodiment, when the pyroelectric infrared sensor is in the low level state, it indicates that there is no human body in the detection range, and the process returns to step S1.
In summary, the method for detecting the static human body by the pyroelectric sensor can drive the pyroelectric infrared sensor to move relative to the static human body through the moving mechanism, and when the method is used in combination with the Fresnel lens, the effect that the human body can be detected by the pyroelectric infrared sensor in a static state is achieved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
All the power utilization modules and the power utilization appliances are common electric appliances in the market, when the power utilization modules and the power utilization appliances are bought for use, the power utilization modules and the power utilization appliances can be used only by being mutually and electrically connected according to the bought-back use specification, and the control modules are common self-contained modules, so that the details are not repeated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A method for pyroelectric detection of a stationary human body is characterized by comprising
S1, the pyroelectric infrared sensor is in a standby state;
s2, acquiring the electric signal fed back by the pyroelectric infrared sensor, and judging whether the fed back electric signal is in a high level state;
s3, when the feedback electric signal is in high level state, triggering the pyroelectric infrared sensor movement mechanism to detect the static human body infrared signal;
s4, acquiring the electric signal fed back by the pyroelectric infrared sensor, and judging whether the fed back electric signal is in a low level state;
s5, when the feedback electric signal is in low level state, return to step S1.
2. The method for pyroelectric detection of static human body as claimed in claim 1, wherein: in the step S2, when the electric signal fed back by the pyroelectric infrared sensor is in a low level state, the process returns to the step S1, and when the electric signal fed back is in a high level state, the process goes to step S3.
3. The method for pyroelectric detection of static human body as claimed in claim 1, wherein: in the step S3, the pyroelectric infrared sensor is driven by the motion mechanism to move, so as to perform relative motion on the static human body, and the relative motion mode may be any one of moving, rotating, stretching, or swinging.
4. The method for pyroelectric detection of static human body as claimed in claim 1, wherein: in the step S4, when the fed back electric signal is in a high state, the step S4 is executed again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110316997.1A CN113049117A (en) | 2021-03-25 | 2021-03-25 | Method for detecting static human body by pyroelectric detection |
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| CN202110316997.1A CN113049117A (en) | 2021-03-25 | 2021-03-25 | Method for detecting static human body by pyroelectric detection |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718902Y (en) * | 2004-08-10 | 2005-08-17 | 惠州雷士工业发展有限公司 | Intelligent human body induction switch |
| CN1949001A (en) * | 2006-10-18 | 2007-04-18 | 付文军 | Method and structure for identifying static human body and moving human body at sametime by thermo electrical detector |
| CN101866020A (en) * | 2010-05-19 | 2010-10-20 | 山东建筑大学 | Intelligent detection device and method for detecting dynamic and static human body |
| CN201707454U (en) * | 2010-05-19 | 2011-01-12 | 山东建筑大学 | Intelligent detector for detecting dynamic and static human bodies |
| CN201766566U (en) * | 2010-07-12 | 2011-03-16 | 陈正杰 | Pyroelectric infrared switch |
| CN102510601A (en) * | 2011-10-11 | 2012-06-20 | 天津大学 | Infrared sensing device for detecting static human bodies |
| CN105093346A (en) * | 2015-05-19 | 2015-11-25 | 南京信息工程大学 | Infrared detection apparatus and method for detecting stationary human body and moving human body |
-
2021
- 2021-03-25 CN CN202110316997.1A patent/CN113049117A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718902Y (en) * | 2004-08-10 | 2005-08-17 | 惠州雷士工业发展有限公司 | Intelligent human body induction switch |
| CN1949001A (en) * | 2006-10-18 | 2007-04-18 | 付文军 | Method and structure for identifying static human body and moving human body at sametime by thermo electrical detector |
| CN101866020A (en) * | 2010-05-19 | 2010-10-20 | 山东建筑大学 | Intelligent detection device and method for detecting dynamic and static human body |
| CN201707454U (en) * | 2010-05-19 | 2011-01-12 | 山东建筑大学 | Intelligent detector for detecting dynamic and static human bodies |
| CN201766566U (en) * | 2010-07-12 | 2011-03-16 | 陈正杰 | Pyroelectric infrared switch |
| CN102510601A (en) * | 2011-10-11 | 2012-06-20 | 天津大学 | Infrared sensing device for detecting static human bodies |
| CN105093346A (en) * | 2015-05-19 | 2015-11-25 | 南京信息工程大学 | Infrared detection apparatus and method for detecting stationary human body and moving human body |
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