CN114660672A - Human existence sensing device - Google Patents
Human existence sensing device Download PDFInfo
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- CN114660672A CN114660672A CN202210434044.XA CN202210434044A CN114660672A CN 114660672 A CN114660672 A CN 114660672A CN 202210434044 A CN202210434044 A CN 202210434044A CN 114660672 A CN114660672 A CN 114660672A
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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Abstract
The present invention relates to a human presence sensing device. The human presence sensing device of the present invention comprises: a sensing signal processing assembly comprising: the pyroelectric infrared sensor comprises a Fresnel lens, a pyroelectric sensor and a signal processing circuit board; the Fresnel lens and the pyroelectric sensor are used in a matched manner and are fixed on the signal processing circuit board; a drive assembly, comprising: the stepping motor and the stepping motor driving circuit board; the stepping motor is fixed on the stepping motor driving circuit board; the rotating assembly is arranged between the sensing signal processing assembly and the driving assembly and drives the sensing signal processing assembly to move under the driving of the driving assembly; and the flat cable comprises a data line and a power line which are led out from the sensing signal processing assembly and the driving assembly. The invention provides a novel human body existence sensing device which can sense a static human body and a moving human body and comprehensively determine whether a human body exists in a detection range.
Description
Technical Field
The invention belongs to the technical field of detection, and relates to a human body existence sensing device.
Background
With the rapid progress of society and the rapid development of science and technology, the power consumption load is increased, and the energy conservation and emission reduction become the common concern of the whole society. The rapid development of intelligent science and technology now, the development and the application of various novel sensors embody intelligent advantage more and more, very big improvement people's life facility and power consumption efficiency. The main human presence sensing devices currently on the market include microwave sensors, pyroelectric sensors, thermocouple sensors, and the like. The microwave sensor has strong perception to radial movement, the pyroelectric sensor has strong perception to tangential heat body movement, and the thermocouple sensor has perception to temperature change greatly. One problem that is urgently needed to be solved at present is a human body presence sensing device which can sense a micro-moving or non-moving human body within a detection range at low cost.
At present, an infrared pyroelectric sensor matched with a Fresnel lens can be applied to a human body for sensing movement. The working principle is as follows: when someone passes in front of the Fresnel lens, infrared rays emitted by a human body continuously and alternately enter a high-sensitivity region from a blind region, so that received infrared signals are input in a pulse mode of strong and weak, and the human body is detected. However, the device can only passively sense the infrared signal of the human body, and when the human body is still, the process of entering a high-sensitivity area from a blind area is not available, and the human body cannot be detected. For example, in a bedroom, a meeting room, etc., when a person sits down and moves slightly or is still, the infrared pyroelectric sensor cannot detect whether the person is present, and thus misjudgment can be made.
Besides the infrared sensor, radar transmission and reception can be adopted for detection. However, most human presence sensing devices on the market can only detect a moving human body, but cannot detect if the human body is still. If a complex detection means or a detection instrument is adopted to detect the motionless human body, the cost performance is low, and the popularization and the application are not facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the existing infrared pyroelectric sensor and provide a human body existence sensing device which can sense a static human body and a moving human body and comprehensively determine whether the human body exists in a detection range.
The human presence sensing device of the present invention comprises: a sensor signal processing assembly comprising: the Fresnel lens, the pyroelectric sensor and the signal processing circuit board are arranged on the base; the Fresnel lens and the pyroelectric sensor are used in a matched mode and are fixed on the signal processing circuit board; a drive assembly, comprising: the stepping motor and the stepping motor driving circuit board; the stepping motor is fixed on the stepping motor driving circuit board; the rotating assembly is arranged between the sensing signal processing assembly and the driving assembly and drives the sensing signal processing assembly to move under the driving of the driving assembly; and the flat cable comprises a data line and a power line which are led out from the sensing signal processing assembly and the driving assembly.
According to a further feature of the human presence sensing apparatus of the present invention, the rotating assembly may include a support plate and a rotating shaft; the supporting plate is fixed below the signal processing circuit board; one end of the rotating shaft is connected into the stepping motor, and the other end of the rotating shaft is connected into the supporting plate, so that the rotating shaft drives the supporting plate to rotate when the stepping motor rotates.
According to a further feature of the human presence sensing apparatus of the present invention, the rotating assembly includes a support post, a rotating bracket, and a rotating shaft; the supporting column is fixed between the signal processing circuit board and the stepping motor driving circuit board; the rotating support penetrates through a hollow groove of the signal processing circuit board from the lower part to be connected with the Fresnel lens; one end of the rotating shaft is connected into the stepping motor, and the other end of the rotating shaft is connected into the rotating support, so that the rotating support is driven to rotate through the rotating shaft when the stepping motor rotates.
According to a further feature of the human presence sensing apparatus of the present invention, the rotating assembly includes a support plate, a lead screw, left and right limit brackets, and a lead screw nut transmission member; the supporting plate is fixed below the signal processing circuit board; one end of the screw rod is connected into the stepping motor, and the other end of the screw rod is fixed on the left and right limiting brackets on the driving circuit board of the stepping motor; one end of the screw rod nut transmission part is a screw rod nut which is sleeved on the screw rod, and the other end of the screw rod nut transmission part is connected into the supporting plate, so that when the stepping motor rotates, the rotary motion of the screw rod is converted into linear motion through the screw rod nut transmission part, and the supporting plate is driven to move in a left-right translation mode.
According to a further feature of the human presence sensor apparatus of the present invention, the size of each lens unit of the inner layer of the fresnel lens is reduced, and the space between the lens units is widened and light-tight.
The human presence sensing device of the present invention has the following beneficial effects:
(1) the Fresnel lens and the pyroelectric sensor are used as core elements for processing the sensing signals, the driving assembly and the transmission assembly are designed to enable the Fresnel lens to be in a motion state, infrared rays emitted by a human body can continuously and alternately enter a high-sensitivity region from a blind region, so that received infrared signals are input in a pulse mode of strength and weakness, and the received infrared signals are matched with rear-end code processing to achieve the purpose of identifying the moving or static human body, namely, the Fresnel lens can be detected whether the human body is moving or static as long as a person is in front of the Fresnel lens.
(2) The device provided by the invention provides different transmission assemblies, can enable the Fresnel lens to rotate or translate, and can detect whether a moving or static human body exists in a certain detection range. Different algorithm processes can be designed on the basis of the hardware, and programs for processing motor driving and optical detection can be designed.
(3) Based on the movable characteristic of the Fresnel lens of the device, the invention further improves the design of the Fresnel lens, reduces the size of each lens unit on the inner layer of the Fresnel lens, widens the interval between each lens unit and is light-proof, and increases the detection span distance between a high-sensitivity area and a blind area, thereby achieving the purposes of inhibiting interference signals and improving the detection accuracy and stability.
(4) The device of the invention can adopt a common built-in power supply or an external power supply, thereby saving a large amount of electric energy and prolonging the service life of electric equipment.
(5) The device is convenient to assemble, economical, practical and convenient to popularize and apply.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of a human presence sensing apparatus according to the present invention.
Figure 2 is a schematic structural view of another embodiment of a human presence sensing apparatus according to the present invention.
Figure 3 is a schematic structural view of yet another embodiment of the human presence sensing apparatus of the present invention.
Figure 4 is a functional block diagram of a human presence sensing apparatus according to the present invention.
Reference numerals:
1: a Fresnel lens; 2: a pyroelectric sensor; 3: a signal processing circuit board; 4: a support plate; 5: a rotating shaft; 6: the stepping motor drives the circuit board; 7: a stepping motor; 8: arranging wires; 9: a feed screw nut transmission member; 10: a left and a right limit brackets; 11: a screw rod; 12: a support pillar; 13, rotating the bracket; 14: hollowing out the grooves; 15: a single chip microcomputer; 16: a relay.
Detailed Description
The invention will be described in detail below by means of specific embodiments in conjunction with the attached drawings.
The first embodiment is as follows:
the human presence sensor device of the present invention is a human presence sensor device that can be rotated left and right as shown in fig. 1. The device comprises four parts:
a sensing signal processing assembly, comprising: fresnel lens 1, pyroelectric sensor 2 and signal processing circuit board 3. The fresnel lens 1 and the pyroelectric sensor 2 are used in a matched manner and are fixed on the signal processing circuit board 3.
(II) a drive assembly comprising: a stepping motor 7 and a stepping motor drive circuit board 6. The stepping motor 7 is fixed to the stepping motor drive circuit board 6.
(III) a rotating assembly comprising: a support plate 4 and a rotation shaft 5. The support plate 4 is fixed below the signal processing circuit board 3. One end of the rotating shaft 5 is connected into the stepping motor 7, and the other end is connected into the support plate 4, so that the support plate 4 is driven to rotate by the rotating shaft 5 when the stepping motor 7 rotates.
And the (IV) flat cable comprises a data line and a power line which are led out from the sensing signal processing assembly and the driving assembly.
When the Fresnel lens is used specifically, when a human body is in front of the Fresnel lens 1, no matter the human body moves or is static, the stepping motor 7 rotates clockwise or anticlockwise in sequence under the control of a program (the rotation angle and the rotation speed can be set according to requirements) to drive the Fresnel lens 1 and the pyroelectric sensor 2 to rotate, and the pyroelectric sensor 2 can detect a person and send a signal. When the human body leaves the detection range of the fresnel lens 1 for a certain time (for example, 1 minute or other set time), the stepping motor 7 is stopped.
Example two:
the human presence sensor device of the present invention is a human presence sensor device that can be rotated left and right as shown in fig. 2. The device includes four parts:
a sensing signal processing assembly, comprising: fresnel lens 1, pyroelectric sensor 2 and signal processing circuit board 3. The fresnel lens 1 and the pyroelectric sensor 2 are used in a matched manner and are fixed on the signal processing circuit board 3.
(II) a drive assembly comprising: a stepping motor 7 and a stepping motor drive circuit board 6. The stepping motor 7 is fixed to the stepping motor drive circuit board 6.
(III) a rotating assembly comprising: support column 12, rotating bracket 13 and rotating shaft 5. The support column 12 is fixed between the signal processing circuit board 3 and the stepping motor drive circuit board 6. The rotating support 13 is connected with the Fresnel lens 1 from the lower part through the hollow groove 14 of the signal processing circuit board 3. One end of the rotating shaft 5 is connected into the stepping motor 7, and the other end is connected into the rotating bracket 13, so that the rotating bracket 13 is driven to rotate by the rotating shaft 5 when the stepping motor 7 rotates.
And the (IV) flat cable comprises a data line and a power line which are led out from the sensing signal processing assembly and the driving assembly.
When the Fresnel lens is used specifically, when a human body is in front of the Fresnel lens 1, no matter the human body moves or is static, the stepping motor 7 rotates clockwise or anticlockwise in sequence under the control of a program (the rotation angle and the rotation speed can be set as required), the Fresnel lens 1 is driven to rotate, and the pyroelectric sensor 2 can detect that someone sends a signal. When the human body leaves the detection range of the fresnel lens 1 for a certain time (for example, 1 minute or other set time), the stepping motor 7 is stopped.
Example three:
the human presence sensing device of the present invention is a human presence sensing device that can move left and right, as shown in fig. 3. The device includes four parts:
a sensing signal processing assembly, comprising: fresnel lens 1, pyroelectric sensor 2 and signal processing circuit board 3. The fresnel lens 1 and the pyroelectric sensor 2 are used in a matched manner and are fixed on the signal processing circuit board 3.
(II) a drive assembly comprising: a stepping motor 7 and a stepping motor drive circuit board 6. The stepping motor 7 is fixed to the stepping motor drive circuit board 6.
(III) a rotating assembly comprising: the device comprises a support plate 4, a screw rod 11, a left limiting bracket 10, a right limiting bracket 10 and a screw rod nut transmission piece 9. The support plate 4 is fixed below the signal processing circuit board 3. One end of the screw rod 11 is connected into the stepping motor 7, and the other end is fixed in a left limiting bracket 10 and a right limiting bracket 10 on the stepping motor driving circuit board 6. One end of the screw nut transmission part 9 is a screw nut which is sleeved on the screw rod 11, and the other end of the screw nut transmission part is connected into the support plate 4, so that when the stepping motor 7 rotates, the rotary motion of the screw rod 11 is converted into linear motion through the screw nut transmission part 9, and the support plate 4 is driven to move horizontally.
And the (IV) flat cable comprises a data line and a power line which are led out from the sensing signal processing assembly and the driving assembly.
When the Fresnel lens is used specifically, when a human body is in front of the Fresnel lens 1, no matter the human body moves or is static, the stepping motor 7 rotates clockwise or anticlockwise in sequence under the control of a program (the rotation angle and the rotation speed can be set as required), the Fresnel lens 1 and the pyroelectric sensor 2 which are connected with the lead screw through the lead screw nut transmission piece move left and right, the lead screw is provided with a left limiting support and a right limiting support 10, and the pyroelectric sensor 2 can detect a person and send signals. When the human body leaves the detection range of the fresnel lens 1 for a certain time (for example, 1 minute or other set time), the stepping motor 7 is stopped.
Figure 4 illustrates the working principle of the human presence sensing device according to the invention. When someone is in front of the fresnel lens 1, infrared heat radiation of a human body is focused on the pyroelectric sensor 2 through the fresnel lens 1, a signal processing circuit board 3 processes signals detected by the pyroelectric sensor 2 and converts the signals into pulse signals, once the single chip microcomputer 15 detects the pulse signals, the single chip microcomputer sends instructions to the stepping motor driving circuit 6, so that the stepping motor 7 regularly rotates clockwise and anticlockwise in sequence, the fresnel lens 1 is driven to rotate left and right, and action instructions are sent to the relay 16. The singlechip 15 is arranged on the signal processing circuit board 3, and the relay 16 is arranged on the stepping motor driving circuit 6.
An exemplary procedure of the human presence sensing apparatus of the present invention: when the human body existence sensing device is powered on, a program is started and initialized, the human body existence sensing device starts to work, the single chip microcomputer always detects whether a pulse signal from the signal processing circuit board exists, and if the pulse signal is not detected, the cyclic detection is continuously carried out; if the pulse signal is detected, closing the relay, and sequentially sending a clockwise rotation instruction and a counterclockwise rotation instruction to the stepping motor driving circuit, and continuously judging whether a person exists in the period, namely detecting the pulse signal; if the pulse signal is not detected, the time is delayed for 10 seconds, and if the pulse signal is still not detected during the time delay of 10 seconds, the step motor driving circuit is stopped sending instructions, the relay is disconnected, and the detection is continued.
It should be apparent that the described embodiments are only some embodiments of the present invention, and not all 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.
Claims (5)
1. A human presence sensing device, comprising:
a sensor signal processing assembly comprising: the Fresnel lens, the pyroelectric sensor and the signal processing circuit board are arranged on the base; the Fresnel lens and the pyroelectric sensor are used in a matched mode and are fixed on the signal processing circuit board;
a drive assembly, comprising: the stepping motor and the stepping motor driving circuit board; the stepping motor is fixed on the stepping motor driving circuit board;
the rotating assembly is arranged between the sensing signal processing assembly and the driving assembly and drives the sensing signal processing assembly to move under the driving of the driving assembly; and
and the flat cable comprises a data line and a power line which are led out from the sensing signal processing assembly and the driving assembly.
2. The human presence sensing device according to claim 1, wherein:
the rotating assembly comprises a supporting plate and a rotating shaft; the supporting plate is fixed below the signal processing circuit board; one end of the rotating shaft is connected into the stepping motor, and the other end of the rotating shaft is connected into the supporting plate, so that the rotating shaft drives the supporting plate to rotate when the stepping motor rotates.
3. The human presence sensing device according to claim 1, wherein:
the rotating assembly comprises a supporting column, a rotating bracket and a rotating shaft; the supporting column is fixed between the signal processing circuit board and the stepping motor driving circuit board; the rotating support penetrates through a hollow groove of the signal processing circuit board from the lower part and is connected with the Fresnel lens; one end of the rotating shaft is connected into the stepping motor, and the other end of the rotating shaft is connected into the rotating support, so that the rotating support is driven to rotate through the rotating shaft when the stepping motor rotates.
4. The human presence sensing device according to claim 1, wherein:
the rotating assembly comprises a supporting plate, a screw rod, a left limiting bracket, a right limiting bracket and a screw rod nut transmission piece; the supporting plate is fixed below the signal processing circuit board; one end of the screw rod is connected into the stepping motor, and the other end of the screw rod is fixed on the left and right limiting brackets on the driving circuit board of the stepping motor; one end of the screw rod nut transmission piece is a screw rod nut and is sleeved on the screw rod, and the other end of the screw rod nut transmission piece is connected into the supporting plate, so that when the stepping motor rotates, the rotary motion of the screw rod is converted into linear motion through the screw rod nut transmission piece, and the supporting plate is driven to move horizontally.
5. The human presence sensing device according to claim 1, wherein: the size of each lens unit of the Fresnel lens inner layer is reduced, and the space between the lens units is widened and is light-tight.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210434044.XA CN114660672A (en) | 2022-04-24 | 2022-04-24 | Human existence sensing device |
| PCT/CN2023/079875 WO2023207340A1 (en) | 2022-04-24 | 2023-03-06 | Human body presence sensing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210434044.XA CN114660672A (en) | 2022-04-24 | 2022-04-24 | Human existence sensing device |
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| Publication Number | Publication Date |
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| CN114660672A true CN114660672A (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210434044.XA Pending CN114660672A (en) | 2022-04-24 | 2022-04-24 | Human existence sensing device |
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| CN (1) | CN114660672A (en) |
| WO (1) | WO2023207340A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023207340A1 (en) * | 2022-04-24 | 2023-11-02 | 广州南方学院 | Human body presence sensing apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261833A (en) * | 1995-03-27 | 1996-10-11 | Seikosha Co Ltd | Pyroelectric type infrared detector |
| CN101285710B (en) * | 2008-05-15 | 2010-12-22 | 深圳和而泰智能控制股份有限公司 | Thermal release electric infra-red ray human body detection device |
| CN102155995B (en) * | 2011-03-13 | 2012-11-28 | 慈溪思达电子科技有限公司 | Infrared human body sensing device with all-around human body sensing capability |
| TWI459070B (en) * | 2012-03-07 | 2014-11-01 | Altek Corp | Dual-motor lens actuating device and dual-motor lens actuating method thereof |
| CN103197354B (en) * | 2013-03-22 | 2015-08-12 | 黄程云 | Digital passive infrared human body detector and detection method thereof |
| WO2020000186A1 (en) * | 2018-06-26 | 2020-01-02 | 深圳瀚飞科技开发有限公司 | Pyroelectric infrared detection system |
| CN217879676U (en) * | 2022-04-24 | 2022-11-22 | 庄继东 | Human existence sensing device |
| CN114660672A (en) * | 2022-04-24 | 2022-06-24 | 庄继东 | Human existence sensing device |
-
2022
- 2022-04-24 CN CN202210434044.XA patent/CN114660672A/en active Pending
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2023
- 2023-03-06 WO PCT/CN2023/079875 patent/WO2023207340A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023207340A1 (en) * | 2022-04-24 | 2023-11-02 | 广州南方学院 | Human body presence sensing apparatus |
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| WO2023207340A1 (en) | 2023-11-02 |
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