CN106952436A - Human body detecting device - Google Patents
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- CN106952436A CN106952436A CN201710344848.XA CN201710344848A CN106952436A CN 106952436 A CN106952436 A CN 106952436A CN 201710344848 A CN201710344848 A CN 201710344848A CN 106952436 A CN106952436 A CN 106952436A
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- 238000001514 detection method Methods 0.000 claims abstract description 76
- 238000004891 communication Methods 0.000 claims abstract description 65
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 238000012546 transfer Methods 0.000 claims abstract description 3
- 230000005616 pyroelectricity Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000032683 aging Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 7
- 230000005855 radiation Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001931 thermography Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
- G08B13/191—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using pyroelectric sensor means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/183—Single detectors using dual technologies
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of human body detecting device, including pyroelectric sensing unit, radio communication detection unit and things-internet gateway：The pyroelectric sensing unit is used to sense the human body being kept in motion, and induced signal is exported to the things-internet gateway；The radio communication detection unit is used to detect Wireless Telecom Equipment, and signal output will be detected to the things-internet gateway；The things-internet gateway is used to the detection signal be judged according to the induced signal and exports human testing signal, and realizes that the data transfer between the human body detecting device and external communication network is exchanged.The invention provides a kind of degree of accuracy, cost performance and ageing all good human body detecting device.
Description
Technical field
It is a kind of human body detecting device specifically the invention belongs to human body sensing detection technique field.
Background technology
With the development and the intensification of social informatization of science and technology, Internet of Things has goed deep into social life using increasingly extensive
Various aspects.In Internet of Things application, most basic is also one of most important technology, is how to realize the accurate inspection to people
Survey.
Existing human testing scheme mainly has following form, including camera image acquisition testing, human body dynamically sense
Identification, infrared thermal imaging detection, WiFi connecting detections etc..Above scheme can realize human testing in some aspects, but also respectively have
Drawback.
Camera image acquisition testing is more directly perceived, but equipment builds high with maintenance cost, and with certain time lag；
Dynamically sensing identification synchronism is preferable for human body, but is only applicable to dynamic scene；Infrared thermal imaging testing cost is high, it is difficult to promote
Popularization；WiFi identifications are strict to semaphore request, and signal strength skewness, easily because interference and caused by position it is inaccurate.
In terms of comprehensive, Internet of Things is respectively provided with higher requirement using the degree of accuracy to human testing, cost performance with ageing,
Prior art is still difficult to be met.
The content of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of human body detecting device, with the preferably degree of accuracy,
Cost performance with it is ageing, meet Internet of Things application rigors.
The purpose of the present invention is achieved through the following technical solutions：
A kind of human body detecting device, including pyroelectric sensing unit, radio communication detection unit and things-internet gateway：
The pyroelectric sensing unit is used to sense the human body being kept in motion, and induced signal is exported to the thing
Networking gateway；
The radio communication detection unit is used to detect Wireless Telecom Equipment, and signal output will be detected to the Internet of Things
Gateway；
The things-internet gateway is used to judging and exporting human testing letter with the detection signal according to the induced signal
Number, and realize that the data transfer between the human body detecting device and external communication network is exchanged.
As the improvement of above-mentioned technical proposal, the pyroelectric sensing unit includes pyroelectric sensor, the pyroelectricity
Sensor has pyroelectricity medium.
As the further improvement of above-mentioned technical proposal, the pyroelectric sensor is multiple and dispersed placement.
As the further improvement of above-mentioned technical proposal, the human body detecting device is located at the target area for needing to detect
It is interior：
Only when the pyroelectric sensing unit exports the induced signal to the things-internet gateway, the Internet of Things net
Pass judges that user is located in the target area.
It is used as the further improvement of above-mentioned technical proposal, when the target area is the interior space with entrance, institute
Radio communication detection unit is stated located at side of the target area away from the entrance, the pyroelectric sensing unit is located at institute
Target area is stated close to the side of the entrance.
As the further improvement of above-mentioned technical proposal, the things-internet gateway has sensed data processor, the sense
Answering data processor is used for the distance that human body and the pyroelectric sensing unit are calculated according to the induced signal.
As the further improvement of above-mentioned technical proposal, the wireless transmission protocol that the radio communication detection unit is used for
Wireless Fidelity or Bluetooth transmission protocol or MacBee agreements.
As the further improvement of above-mentioned technical proposal, the radio communication detection unit uses Wireless
During Fidelity, it has WiFi routers.
As the further improvement of above-mentioned technical proposal, the things-internet gateway has detection data processor, the inspection
Survey the distance that data processor is used to calculate human body and the radio communication detection unit according to the power of the detection signal.
As the further improvement of above-mentioned technical proposal, the Wireless Telecom Equipment includes smart mobile phone, panel computer, intelligence
Can wearable device.
The beneficial effects of the invention are as follows：
(1) there is pyroelectric sensing unit, the motion state for judging human body can be sensed by infrared induction, for detecting
Human body in the entrance in target area, leave and moved in domain, realize the dynamic detection to target area；
(2) there is radio communication detection unit, recognizable Wireless Telecom Equipment is detected by cordless communication network, according to
The change of the presence or absence of Wireless Telecom Equipment judges to hold the presence or absence of human body of Wireless Telecom Equipment and mobile status, i.e., is in human body
Also will not lossing signal when static；
(3) there is things-internet gateway, by the induced signal and radio communication detection unit that gather pyroelectric sensing unit
Detection signal, the presence or absence of comprehensive descision human body and Wireless Telecom Equipment and state realize the sound to human body in target area
State comprehensive detection；
(4) there is the human body detecting device of said structure, the degree of accuracy both judged with dual signal, and be based on being applied to
This relatively low implementation part, while detection means reaction is rapid in time, the degree of accuracy, cost performance with it is ageing all good.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the first annexation figure of the human body detecting device that the embodiment of the present invention 1 is provided；
Fig. 2 is the second annexation figure of the human body detecting device that the embodiment of the present invention 1 is provided；
Fig. 3 is the 3rd annexation figure of the human body detecting device that the embodiment of the present invention 1 is provided.
Main element symbol description：
100- human body detecting devices, 010- pyroelectric sensing units, 020- radio communication detection units, 030- Internet of Things nets
Close, 031- sensed data processors, 032- detection data processors.
Embodiment
For the ease of understanding the present invention, human body detecting device is described more fully below with reference to relevant drawings.
The preferred embodiment of human body detecting device is given in accompanying drawing.But, human body detecting device can pass through many different forms
To realize, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is to make to set human testing
Standby disclosure is more thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertically ", " level ", "left", "right" and similar statement are
For illustrative purposes.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.It is intended merely to herein in the term used in the description of human body detecting device
The purpose of specific embodiment is described, it is not intended that the limitation present invention.Term as used herein " and/or " include one or many
The arbitrary and all combination of individual related Listed Items.
Embodiment 1
Fig. 1~2 are please referred to, human body detecting device 100 includes pyroelectric sensing unit 010, radio communication detection list
Member 020 and things-internet gateway 030.
Wherein, pyroelectric sensing unit 010 is used to sense the human body being kept in motion, and induced signal is exported to thing
Networking gateway 030.
Preferably, pyroelectric sensing unit 010 includes pyroelectric sensor, and pyroelectric sensor has pyroelectricity medium.
Pyroelectric sensor is also known as infrared sensor of the human body, is made using the pyroelectric effect of pyroelectricity material.Wherein, press
Electroceramics class dielectric is more conventional pyroelectricity material.When pyroelectricity material by the infra-red radiation that human body is sent temperature
During rise, surface charge will be reduced, equivalent to releasing a part of electric charge, therefore referred to as pyroelectricity.Discharging electric charge can through amplifier
Voltage output is converted to, so that the change of infra-red radiation is detected, to detect the human body being kept in motion.
It should be noted that when infra-red radiation continues to act on pyroelectricity element, the surface charge of pyroelectricity material reaches
During balance, electric charge is just no longer discharged.In other words, when human body is remained stationary as, pyroelectricity material does not discharge electric charge.Therefore, heat is released
Electric transducer can not detect constant infra-red radiation, only can detect the human body in motion.
Preferably, pyroelectric sensing unit 010 has multiple pyroelectric sensors, and multiple pyroelectric sensors disperse cloth
It is placed in target area, to increase the pyroelectric sensor density in target area, improves the sensitivity of infrared induction with that can sentence
Disconnected property.
Human body detecting device 100 includes also including radio communication detection unit 020, and radio communication detection unit 020 is used for
Wireless Telecom Equipment is detected, and signal output will be detected to things-internet gateway 030.Specifically, detection signal, which is used, is available for transmission
Signal form output, so as to things-internet gateway 030 carry out reception identification.
Wherein, radio communication detection unit 020 is the hardware module using any wireless communication protocol, passes through radio communication
Network and can match connection using same wireless communication protocol Wireless Telecom Equipment, and using connection result as detection signal and
Output.
Radio communication detection unit 020 can use various wireless communication agreement, and with corresponding data transmission module.
In one preferred embodiment, the wireless transmission protocol that radio communication detection unit 020 is used is Wireless Fidelity.
Specifically, radio communication detection unit 020 has WiFi hardware modules, for realizing WiFi connections.Correspondingly, things-internet gateway
030 can support that Wireless Fidelity communicate, to ensure between things-internet gateway 030 and radio communication detection unit 020
Data exchange channel is unimpeded.
Wireless Fidelity (referred to as WiFi) are that a kind of permission electronic equipment is connected to a WLAN
(WLAN) technology, usually using 2.4G UHF or 5G SHF ISM radio frequency bands.It is typically to have close to be connected to WLAN
Code protection；But it may also be open, so allow for any equipment in the range of WLAN to connect.
In an exemplary embodiment, radio communication detection unit 020 is WiFi routers.WiFi routers
(Router) it is equipment for connecting WLAN and things-internet gateway 030, it can be automatically selected according to the situation of channel
With setting route, tandem sending signal is pressed with optimal path.Wireless Telecom Equipment with WiFi module, is, for example, intelligence
Mobile phone, panel computer, intelligent wearable device (such as bracelet, necklace) etc., can be connected to by WLAN (WiFi)
On WiFi routers, detection connection while realizing multiple Wireless Telecom Equipments.
In another embodiment, the wireless transmission protocol that radio communication detection unit 020 is used is Bluetooth transmission protocol.
Specifically, radio communication detection unit 020 has bluetooth module, integration realization function of Bluetooth communication.
Bluetooth (Bluetooth) is a kind of wireless technology standard, and fixing equipment, mobile device and building people domain can be achieved
Short-range data between net is exchanged (using the UHF radio waves of 2.4-2.485GHz ISM band).
In another embodiment, radio communication detection unit 020 can also use MacBee agreements.Correspondingly, Internet of Things
Net gateway 030 also supports MacBee agreements, to realize the data between things-internet gateway 030 and radio communication detection unit 020
Interconnection.MacBee agreements are the Internet of Things fidonetFidos of new generation that internet of things oriented application is released, and the technology is based on domestic autonomous controllable
Principle, is provided from the integrated Internet of Things of chip, module, high in the clouds, APP and solution semifinished or finished goods towards traditional mode of production enterprise
Net solution.
In some other embodiment, radio communication detection unit 020 can also use other wireless communication protocols, with energy
Realize that radio communication is defined.
Human body detecting device 100 also includes things-internet gateway 030, and things-internet gateway 030 is used for according to induced signal and inspection
Survey signal to judge and export human testing signal, and realize that the data between human body detecting device 100 and external communication network are passed
It is defeated to exchange.
Specifically, things-internet gateway 030 is to connect sensing network and the tie of conventional communication networks.As gateway device,
Things-internet gateway 030 can realize protocol conversion between sensing network and communication network, and different type sensing network both
It can realize that wide area interconnection can also realize Interconnected.
In an exemplary embodiment, things-internet gateway 030 can also possess equipment Management Function, pass through Internet of Things
Gateway 030 can manage each sensing node of bottom, understand the relevant information of each node, and realize remote control.
In other words, manager can be obtained pyroelectric sensing unit 010 by things-internet gateway 030 and detect single with radio communication
The running status of member 020 and detection data, judge the running status of human body detecting device 100 accordingly.And then, manager can be to
The input instruction signal of things-internet gateway 030, controls the operation of the part of human body detecting device 100, makes human body detecting device
100 in preferably running status.
In a practical application, above-mentioned human body detecting device 100 is arranged in target area, for monitoring objective region
Interior flow of personnel situation.Wherein, the running of human body detecting device 100 is summarized as follows：
When user is from a distance close to target area, under some application scenarios, if the inspection of radio communication detection unit 020
Survey scope is larger, and the Wireless Telecom Equipment that user is held takes the lead in being detected by radio communication detection unit 020.Radio communication is examined
Survey unit 020 to communicate to connect with Wireless Telecom Equipment, radio communication detection unit 020 is sent out to things-internet gateway 030 accordingly
Go out to detect signal, things-internet gateway 030 is informed into the appearance of Wireless Telecom Equipment.
Now, pyroelectric sensing unit 010 not yet obtains induced signal, and things-internet gateway 030 only obtains radio communication inspection
Survey the detection signal that unit 020 is inputted.Accordingly, things-internet gateway 030 tentatively judges the location of user state, knows user
Approach and not yet enter target area, it is to avoid judge by accident.
After Wireless Telecom Equipment is found, user continues close to and enters target area.In the process, radio communication
The detection signal of detection unit 020 constantly strengthens.Meanwhile, it is infrared that pyroelectric sensing unit 010 gets that user's human body sends
Radiation, induced signal is sent using pyroelectric effect to things-internet gateway 030.Things-internet gateway 030 has judged user accordingly
Detection signal into target area, and radio communication detection unit 020 can provide further evidence, and levels of precision is higher.
When user is from a distance close to target area, if the detection range of radio communication detection unit 020 is smaller, pyroelectricity
Sensing unit 010 takes the lead in having an effect, and obtains infra-red radiation and sends induced signal to things-internet gateway 030, things-internet gateway
030 judges that user has been enter into target area accordingly, in the absence of the interference of above-mentioned radio communication detection unit 020.
When user in target area when moving, pyroelectric sensing unit 010 is played with radio communication detection unit 020
Function is detected, respectively by induced signal and detection signal output to things-internet gateway 030.Things-internet gateway 030 is believed according to two-way
Number and accurately judge user in the behavioral characteristics in target area.
When user is in remains stationary in target area, induced signal does not occur for pyroelectric sensing unit 010.Radio communication
Detection unit 020 is played a role, and detection signal is sent to things-internet gateway 030, things-internet gateway 030 can determine whether user still in
In target area, it will not judge by accident.
When user leaves from target area, the distance between user and pyroelectric sensing unit 010 gradually increase, and heat is released
The infra-red radiation that electric induction unit 010 is subject to gradually is decayed until disappearing.In the process, the sense of pyroelectric sensing unit 010
Induction signal fades away, and things-internet gateway 030 can not finally obtain induced signal.Meanwhile, the inspection of radio communication detection unit 020
Survey signal to continue to exist and gradually decay, show the direction of motion of user.When the induced signal of things-internet gateway 030 disappears,
Things-internet gateway 030 judges that user leaves from target area, and it is extremely accurate to judge.
Please refer to Fig. 3, it is preferable that things-internet gateway 030 has sensed data processor 031, for according to sensing
Signal and the distance for calculating human body and pyroelectric sensing unit 010.Specifically, have for the moment between the peak-to-peak value of induced signal
Between it is poor, the distance between human body and pyroelectric sensing unit 010 and its change can be calculated according to the time difference, are Internet of Things net
Close 030 and judge that the direction of motion of user and trend provide more accurate numerical value basis, further improve human body detecting device 100
Judgment accuracy.
Preferably, things-internet gateway 030 has detection data processor 032, based on according to the strong and weak of detection signal
Calculate human body and the distance of radio communication detection unit 020.Specifically, with human body and radio communication detection unit 020 away from
From difference, there is difference in the signal strength between Wireless Telecom Equipment and radio communication detection unit 020 that human body is held, and instead
Reflect in the power of detection signal.It is more accurate that this judges that the direction of motion of user and trend are provided for things-internet gateway 030
Numerical value basis, further improves the judgment accuracy of human body detecting device 100.
The space form of target area can be outdoor space or the interior space, can also be open space or
Closing space.In an exemplary embodiment, it is preferable that when target area is the space with entrance, radio communication
Detection unit 020 is located at side of the target area away from entrance, and pyroelectric sensing unit 010 is located at target area close to entrance
Side.
Specifically, in an exemplary embodiment, target area is the room with a doorway, radio communication inspection
Survey unit 020 and be located at side of the room away from doorway, so that the strong and weak signals changing rule of radio communication detection unit 020, makes
The ranging of things-internet gateway 030 is more accurate with Trend judgement.
In another embodiment, target area can also be the open air with one or more entrances and with isolation strip
Space, the side away from doorway in outdoor space of radio communication detection unit 020.Wherein, isolation strip is inside and outside for splitting
Space, its form can be fence, wall, greenbelt etc..
Similarly, at least there is pyroelectric sensing unit 010 heat located at target area close to the side of entrance to release
Electric transducer, entrance or the leave message of human body are obtained with the very first time, makes the judgement of things-internet gateway 030 more accurate.
In all examples being illustrated and described herein, any occurrence should be construed as merely exemplary, without
It is that therefore, other examples of exemplary embodiment can have different values as limitation.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Therefore limitation of the scope of the invention can not be interpreted as.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.Therefore, protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of human body detecting device, it is characterised in that including pyroelectric sensing unit, radio communication detection unit and Internet of Things
Gateway：
The pyroelectric sensing unit is used to sense the human body being kept in motion, and induced signal is exported to the Internet of Things
Gateway；
The radio communication detection unit is used to detect Wireless Telecom Equipment, and signal output will be detected to the Internet of Things net
Close；
The things-internet gateway is used to the detection signal be judged according to the induced signal and exports human testing signal, and
Realize that the data transfer between the human body detecting device and external communication network is exchanged.
2. human body detecting device according to claim 1, it is characterised in that the pyroelectric sensing unit includes pyroelectricity
Sensor, the pyroelectric sensor has pyroelectricity medium.
3. human body detecting device according to claim 2, it is characterised in that the pyroelectric sensor is multiple and disperseed
Arrangement.
4. human body detecting device according to claim 1, it is characterised in that the human body detecting device, which is located at, needs detection
Target area in：
Only when the pyroelectric sensing unit exports the induced signal to the things-internet gateway, the things-internet gateway is sentenced
Disconnected user is located in the target area.
5. human body detecting device according to claim 4, it is characterised in that when the target area is the room with entrance
During interior space, the radio communication detection unit is located at side of the target area away from the entrance, the pyroelectricity sense
Unit is answered to be located at the target area close to the side of the entrance.
6. human body detecting device according to claim 1, it is characterised in that the things-internet gateway has at sensed data
Manage device, the sensed data processor be used to being calculated according to the induced signal human body and the pyroelectric sensing unit away from
From.
7. human body detecting device according to claim 1, it is characterised in that the nothing that the radio communication detection unit is used
Line host-host protocol is Wireless Fidelity or Bluetooth transmission protocol or MacBee agreements.
8. human body detecting device according to claim 7, it is characterised in that the radio communication detection unit is used
During Wireless Fidelity, it has WiFi routers.
9. human body detecting device according to claim 1, it is characterised in that the things-internet gateway has at detection data
Device is managed, the detection data processor is used to calculate human body according to the power of the detection signal and detect with the radio communication
The distance of unit.
10. human body detecting device according to claim 1, it is characterised in that the Wireless Telecom Equipment includes intelligent hand
Machine, panel computer, intelligent wearable device.
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| CN107734800A (en) * | 2017-10-25 | 2018-02-23 | 深圳市银河风云网络系统股份有限公司 | Street Lamp Monitor System |
| CN108344445A (en) * | 2018-01-30 | 2018-07-31 | 浙江天地人科技有限公司 | A kind of electrnic house number plates and testing staff's height and the method into outgoing direction |
| CN109347895A (en) * | 2018-08-13 | 2019-02-15 | 吴振华 | There are cognitive methods for human body |
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