CN106441596A - Array infrared thermopile sensing device and method - Google Patents
Array infrared thermopile sensing device and method Download PDFInfo
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- CN106441596A CN106441596A CN201610635886.6A CN201610635886A CN106441596A CN 106441596 A CN106441596 A CN 106441596A CN 201610635886 A CN201610635886 A CN 201610635886A CN 106441596 A CN106441596 A CN 106441596A
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- 239000000523 sample Substances 0.000 claims description 29
- 238000012544 monitoring process Methods 0.000 abstract description 13
- 230000008859 change Effects 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract 1
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 2
- 238000003491 array Methods 0.000 description 2
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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
- G01J5/20—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices
- G01J5/22—Electrical features thereof
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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
- G01J5/20—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices
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Abstract
The present invention discloses an array infrared thermopile sensing device and method. The device comprises a sensing module corresponding to an external detection area and comprising a plurality of detection units, wherein the detection range of the plurality of detection units divides the detection area into a plurality of sub-areas, and each detection units senses the temperature data and outputs a response signal separately; a processing module for analyzing the temperature difference change data of the sub-areas of the detection area according to the response signals, and outputting a determination signal representing that a target object appears in the detection area when the temperature difference change data exceeds a jump threshold value. According to the array infrared thermopile sensing device and method of the present invention, the detection area is divided into the plurality of sub-areas and is carried out the temperature data induction, when the temperature difference change data exceeds the jump threshold value, the determination signal representing that the target object appears in the detection area is outputted, so that the human body existence monitoring in the whole detection area is realized by controlling the number of the detection units and the jump amounts of the response signals.
Description
Technical field
The present invention relates to there is formula sensing field, more particularly, to a kind of array infrared thermopile sensing device and sensing in human body
Method.
Background technology
In prior art, there are multiple monitoring modes to moving human body in designated area, such as pyroelectricity monitoring, microwave
Monitoring, infrared tube are monitored and wait unit thermopile infrared sensor to monitor.But all there is certain shortcoming, below in above-mentioned each mode
List respectively.
The shortcoming of pyroelectricity monitoring includes：1st, only there is signal output to movable human body, static human body is not responded to
Output；2nd, only the human body of relatively low to motion frequency (0.1Hz-10Hz) produces signal output, to the people more than 10Hz for the motion frequency
Body activity no responds output.
The shortcoming of microwave monitoring includes：1st, only there is response output to the human body of motion, static human body is not responded to defeated
Go out；2nd, itself externally produces electromagnetic radiation.
The shortcoming of infrared tube monitoring includes：1st, monitoring distance limited (generally less than 50 centimetres)；2nd, monitoring angle is little (only
There is response to probe dead ahead position).
The shortcoming of unit thermopile infrared sensor monitoring includes：1st, signal is weak, and the investigative range of realization is little, only 2-3
The distance of rice.Do not use lens, detection range is short；Part detection range can be increased using lens, but detection angle narrows.This
Outward, using the inferior position of unit infrared thermopile sensor also reside in unit detection region ratio larger, when human body range sensor
When farther out, the proportion that human body accounts for its investigative range is very low.Human body with not in investigative range, caused thermopile IR
Whether the response change in voltage very little of sensor, be not enough to for judging human body in investigative range.
Content of the invention
The technical problem to be solved in the present invention is, provides a kind of improved array infrared thermopile sensing device and sensing
Method.
The technical solution adopted for the present invention to solve the technical problems is：A kind of array infrared thermopile sensing dress is provided
Put, including
Sensing module, corresponding with an external detection region, described sensing module includes multiple probe units, and multiple institute
Described search coverage is divided into multiple subregions by the investigative range stating probe unit, and each described probe unit sensing is corresponding
Subregional temperature data simultaneously exports a response signal respectively；And
Processing module, is connected with described sensing module and receives described response signal, and is divided according to described response signal
Analyse each subregional difference variation data in described search coverage, and when described difference variation data is more than a saltus step threshold value,
Export the judgement signal having destination object to occur in described search coverage.
Preferably, described processing module also includes one first statistic unit, counts all described difference variation data and exceedes
The subregional quantity of described saltus step threshold value, and when statistical magnitude is more than an amount threshold, exporting in described search coverage has
The first comparison signal that destination object occurs, described judgement signal includes described first comparison signal.
Preferably, described processing module also includes one second statistic unit, counts all described difference variation data and exceedes
The area of described saltus step threshold value, calculates the area accounting that statistics area accounts for described search coverage area, and accounts in described area
Ratio is during more than an area accounting threshold value, exports the second comparison signal having destination object to occur in described search coverage, described sentences
Break signal includes described second comparison signal.
Preferably, described processing module also includes a human body sensing unit, in the Current Temperatures of at least one probe unit
During for 36-37.5 DEG C, export described judgement signal；
And/or,
Described processing module also includes a pet-immune unit, is 38- in the Current Temperatures of at least one probe unit
When 39.5 DEG C, cancel and export described judgement signal.
Preferably, in described sensing module, the quantity that described probe unit is is 16, and in 4 × 4 array arrangements.
Preferably, described sensing module is thermopile infrared sensor.
Preferably, described processing module includes MCU chip and/or integrated circuit.
Also provide a kind of array infrared thermopile method for sensing, using sensing device, methods described comprises the steps：
A：In described sensing module, described search coverage is divided into multiple points by the investigative range of multiple described probe units
Region, each subregional temperature data corresponding to described probe unit sensing simultaneously exports a response signal respectively；
B：Each subregional temperature data is sampled by described processing module respectively；
C：Described processing module judges whether each subregional difference variation data exceedes saltus step threshold value, if so, then executes
Step D；If it is not, then return to step B；
D：Export the judgement signal having destination object to occur in described subregion.
Preferably, also include step：Described processing module also includes one first statistic unit, described also includes one first system
Meter unit, counts the subregional quantity that all described difference variation data exceed described saltus step threshold value, and judges statistical magnitude
Whether more than an amount threshold, if so, then export the first comparison signal having destination object to occur in described search coverage, described
Judge that signal includes described first comparison signal；If it is not, then return to step B.
Preferably, also include step：Described processing module also includes one second statistic unit, and all described temperature difference of statistics become
Change the area that data exceedes described saltus step threshold value, calculate the area accounting that statistics area accounts for described search coverage area, and sentence
Whether described area accounting of breaking, more than an area accounting threshold value, if so, then exports in described search coverage and has destination object to occur
The second comparison signal, described judgement signal includes described second comparison signal；If it is not, then return to step B.
The beneficial effects of enforcing the present invention are：In the array infrared thermopile sensing device of the present invention and method for sensing, will
Search coverage is divided into multiple subregions and goes forward side by side the sensing of trip temperature data, and when difference variation data is more than a saltus step threshold value,
There is the judgement signal that destination object occurs in output search coverage, thus by the saltus step to probe unit quantity and response signal
Amount is controlled, and realizes there is formula monitoring to the human body in whole search coverage.
Brief description
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the module diagram of array infrared thermopile sensing device in some embodiments of the invention；
Fig. 2 is the schematic flow sheet of array infrared thermopile method for sensing in some embodiments of the invention.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing describes in detail
The specific embodiment of the present invention.
Fig. 1 shows the array infrared thermopile sensing device in some embodiments of the invention, make use of thermopile IR
The response voltage principle related to the infra-red radiation total amount in its search coverage of sensor, by using mid and far infrared thermoelectric pile
Sensor carries out noncontact, passive detection and uses MCU computing, reaches the purpose that human body has formula sensing.I.e. someone is detecting
Have response output when in region, and to search coverage whether someone carry out in real time, accurate measurements, the purpose of arrival Based Intelligent Control.
Array infrared thermopile sensing device in the embodiment of the present invention also has response, and (within 100ms), designated area are interior no blind soon
Area, contactless, passive type, monitoring distance can to 5 meters or farther the advantages of.Array infrared thermopile sensing device includes
Sensing module 10 and processing module 20, sensing module 10 is used for temperature sensor data, and processing module 20 is used for analyzing difference variation
Data, and judge in search coverage, whether have destination object to occur.
Wherein, sensing module 10 is corresponding with an external detection region.Sensing module 10 includes multiple probe units 11, and
Search coverage is divided into multiple subregions by the investigative range of multiple probe units 11, and each probe unit 11 senses corresponding point
The temperature data in region simultaneously exports a response signal respectively.The present embodiment uses little array infrared thermopile electric transducer to monitoring
Carry out visual field division in region, search coverage is divided into multiple or more than ten or even dozens of region.Alternatively, sense
The quantity that in module 10, probe unit 11 is can be at least three, as long as can meet each subregion corresponding to carry out detecting and real
The detecting function now responding.Preferably, the quantity that in sensing module 10, probe unit 11 is is 16, and is in 4 × 4 arrays
Formula is arranged.
Preferably, the sensing mode in the present embodiment is thermopile IR sensing mode, and that is, sensing module 10 is thermoelectric pile
Infrared sensor.Advantage using array thermopile infrared sensor is, search coverage is divided into multiple little subregions by it
Domain, even if human body range sensor is farther out, the shared proportion in certain little search coverage of human body is still very high.Human body with
Not in search coverage, whether caused sensor voltage response is also enough to be used in judging human body in the range of this search coverage.
Can accurately judge whether someone in search coverage scope further according to the physical characteristic of human body and motion feature simultaneously
Interior.
Processing module 20 is connected with sensing module 10 and receives response signal, and analyzes search coverage according to response signal
In each subregional difference variation data, and when difference variation data is more than a saltus step threshold value, in output search coverage, have mesh
The judgement signal that mark object occurs.Alternatively, this saltus step threshold value can be the numerical value such as 0.1mV, 0.5mV, 1mV, can be according to tool
Body demand is set.Preferably, processing module 20 includes MCU chip and/or integrated circuit, or, processing module 20 also may be used
Think the functional module of other forms, as long as the function of responding can be realized.In certain embodiments, processing module 20 is wrapped
Include the first statistic unit 21, the second statistic unit 22, human body sensing unit 23 and/or pet-immune unit 24.
First statistic unit 21 is used for counting the subregional quantity that all difference variation data exceed saltus step threshold value, and
When statistical magnitude is more than an amount threshold, there is the first comparison signal of destination object appearance in output search coverage, judge signal
Including the first comparison signal.Alternatively, amount threshold can be set according to real needs, and preferably 1.Or, quantity
Threshold value can also be other numerical value, such as 2,3,5 etc..
Second statistic unit 22 is used for counting the area that all difference variation data exceed saltus step threshold value, calculates statistics face
The long-pending area accounting accounting for search coverage area, and when area accounting is more than an area accounting threshold value, have in output search coverage
The second comparison signal that destination object occurs, judges that signal includes the second comparison signal.Alternatively, area accounting threshold value is permissible
Set according to real needs, preferably 12.5%.Or, area threshold can also be other numerical value, such as 10%, 25%
Deng.
Human body sensing unit 23 is used for sensing whether destination object is human body.Human body sensing unit 23 detects at least one
When the Current Temperatures of unit 11 are 36-37.5 DEG C, output judges signal.
Pet-immune unit 24 is used for sensing whether destination object is the house pets such as cat, Canis familiaris L., in this case, does not send and sentences
Break signal.Pet-immune unit 24, when the Current Temperatures of at least one probe unit 11 are more than 38.5 DEG C, are cancelled output and is sentenced
Break signal.
Fig. 2 shows the array infrared thermopile method for sensing in some embodiments of the invention, below in conjunction with Fig. 1 and on
The sensing device stated in embodiment illustrates to the method flow in the present embodiment.Array infrared thermopile in the present embodiment
Method for sensing comprises the steps.
First, in step, in sensing module 10 investigative range of multiple probe units 11 search coverage is divided into many
Individual subregion, each probe unit 11 senses corresponding subregional temperature data and exports a response signal respectively.Preferably,
Sensing mode in the present embodiment is thermopile IR sensing mode, and that is, sensing module 10 is thermopile infrared sensor.As
Select, the quantity that in sensing module 10, probe unit 11 is can be at least three, as long as each subregion corresponding can be met entering
Row detects and realizes the detecting function responding.Preferably, the quantity that in sensing module 10, probe unit 11 is is 16, and
Arrange in 4 × 4 arrays.
Then, in stepb, each subregional temperature data is sampled by processing module 20 respectively.Preferably, processing module
20 include MCU chip and/or integrated circuit, or, processing module 20 can also be the functional module of other forms, as long as permissible
Realize the function of response.
Afterwards, in step C, processing module 20 judges whether each subregional difference variation data exceedes saltus step threshold value,
If so, then execution step D；If it is not, then return to step B.Alternatively, this saltus step threshold value can be the number such as 0.1mV, 0.5mV, 1mV
Value, can be set according to real needs.
Alternatively, in certain embodiments, may also include step herein：It is single that processing module 20 also includes one first statistics
Unit 21, also includes one first statistic unit 21, counts the subregional quantity that all difference variation data exceed saltus step threshold value, and
Whether judge statistical magnitude more than an amount threshold, if so, then have destination object appearance in output search coverage first is compared
Signal, judges that signal includes the first comparison signal；If it is not, then return to step B.Alternatively, amount threshold can be according to concrete
Demand is set, and preferably 1.Or, amount threshold can also be other numerical value, such as 2,3,5 etc..
Alternatively, in certain embodiments, may also include step herein：It is single that processing module 20 also includes one second statistics
Unit 22, counts the area that all difference variation data exceed saltus step threshold value, calculates the face that statistics area accounts for search coverage area
Long-pending accounting, and judge that area accounting, whether more than an area accounting threshold value, if so, then has destination object to go out in output search coverage
The second existing comparison signal, judges that signal includes the second comparison signal；If it is not, then return to step B.Alternatively, area accounting
Threshold value can be set according to real needs, and preferably 12.5%.Or, area threshold can also be other numerical value, for example
10%th, 25% etc..
Finally, in step D, there is the judgement signal that destination object occurs in output subregion.
Alternatively, processing module 20 also includes human body sensing unit 23, for sensing whether destination object is human body.People
When the Current Temperatures of at least one probe unit 11 are 36-37.5 DEG C, output judges signal to body sensing unit 23.
Alternatively, processing module 20 also includes pet-immune unit 24, for sensing whether destination object is cat, Canis familiaris L. etc.
House pet, in this case, does not send judgement signal.Pet-immune unit 24 is in the Current Temperatures of at least one probe unit 11
During for more than 38.5 DEG C, cancel output and judge signal.
It should be noted that array in the step of array infrared thermopile method for sensing and previous embodiment in the present embodiment
Each functional module of infrared thermopile sensing device is corresponding, thus repeats no more.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example, all technical schemes belonging under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of array infrared thermopile sensing device is it is characterised in that include
Sensing module (10), corresponding with an external detection region, described sensing module (10) includes multiple probe units (11),
And described search coverage is divided into multiple subregions by the investigative range of multiple described probe unit (11), each is described detect single
Subregional temperature data corresponding to first (11) sensing simultaneously exports a response signal respectively；And
Processing module (20), is connected with described sensing module (10) and receives described response signal, and according to described response letter
Number analyze each subregional difference variation data in described search coverage, and in described difference variation data more than a saltus step threshold value
When, export the judgement signal having destination object to occur in described search coverage.
2. array infrared thermopile sensing device according to claim 1 is it is characterised in that described processing module (20) is gone back
Including one first statistic unit (21), count the subregional number that all described difference variation data exceed described saltus step threshold value
Amount, and when statistical magnitude is more than an amount threshold, exports and in described search coverage, have the first of destination object appearance to compare letter
Number, described judgement signal includes described first comparison signal.
3. array infrared thermopile sensing device according to claim 1 is it is characterised in that described processing module (20) is gone back
Including one second statistic unit (22), count the area that all described difference variation data exceed described saltus step threshold value, calculate
Statistics area accounts for the area accounting of described search coverage area, and when described area accounting is more than an area accounting threshold value, defeated
Go out to have the second comparison signal that destination object occurs in described search coverage, described judgement signal includes described second and compares letter
Number.
4. the array infrared thermopile sensing device according to any one of claims 1 to 3 is it is characterised in that described process
Module (20) also includes a human body sensing unit (23), is 36-37.5 DEG C in the Current Temperatures of at least one probe unit (11)
When, export described judgement signal；
And/or,
Described processing module (20) also includes a pet-immune unit (24), in the Current Temperatures of at least one probe unit (11)
During for more than 38.5 DEG C, cancel and export described judgement signal.
5. the array infrared thermopile sensing device according to any one of claims 1 to 3 is it is characterised in that described sensing
In module (10), the quantity that described probe unit (11) is is 16, and in 4 × 4 array arrangements.
6. the array infrared thermopile sensing device according to any one of claims 1 to 3 is it is characterised in that described sensing
Module (10) is thermopile infrared sensor.
7. the array infrared thermopile sensing device according to any one of claims 1 to 3 is it is characterised in that described process
Module (20) includes MCU chip and/or integrated circuit.
8. a kind of array infrared thermopile method for sensing is it is characterised in that usage right requires the sensing described in 1 to 7 any one
Device, methods described comprises the steps：
A：In described sensing module (10) investigative range of multiple described probe units (11) described search coverage is divided into many
Individual subregion, each subregional temperature data corresponding to described probe unit (11) sensing simultaneously exports a response signal respectively；
B：Each subregional temperature data is sampled by described processing module (20) respectively；
C：Described processing module (20) judges whether each subregional difference variation data exceedes saltus step threshold value, if so, then executes
Step D；If it is not, then return to step B；
D：Export the judgement signal having destination object to occur in described subregion.
9. array infrared thermopile method for sensing according to claim 8 is it is characterised in that also include step：Described place
Reason module (20) also includes one first statistic unit (21), described also include one first statistic unit (21), statistics is all described
Difference variation data exceedes the subregional quantity of described saltus step threshold value, and whether judges statistical magnitude more than an amount threshold,
If so, then export the first comparison signal having destination object to occur in described search coverage, described judgement signal includes described the
One comparison signal；If it is not, then return to step B.
10. array infrared thermopile method for sensing according to claim 8 is it is characterised in that also include step：Described place
Reason module (20) also includes one second statistic unit (22), counts all described difference variation data and exceedes described saltus step threshold value
Whether area, calculate the area accounting that statistics area accounts for described search coverage area, and judge described area accounting more than one
Area accounting threshold value, if so, then exports the second comparison signal having destination object to occur in described search coverage, described judgement letter
Number include described second comparison signal；If it is not, then return to step B.
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| CN107167851A (en) * | 2017-05-18 | 2017-09-15 | 深圳通感微电子有限公司 | Partition type infrared detector and partition type infrared acquisition method |
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| CN107167851A (en) * | 2017-05-18 | 2017-09-15 | 深圳通感微电子有限公司 | Partition type infrared detector and partition type infrared acquisition method |
| CN108513625A (en) * | 2017-07-04 | 2018-09-07 | 深圳通感微电子有限公司 | Infrared detector and infrared acquisition method |
| CN108152532B (en) * | 2017-12-29 | 2020-11-27 | 浙江摩根智能技术有限公司 | Method for detecting existence and movement of human body |
| CN108152532A (en) * | 2017-12-29 | 2018-06-12 | 浙江摩根智能技术有限公司 | A kind of human body exists and mobile detection method |
| CN108444604A (en) * | 2018-05-04 | 2018-08-24 | 深圳钶钽智能技术有限公司 | A kind of space partition zone detection device, system and method |
| WO2019210520A1 (en) * | 2018-05-04 | 2019-11-07 | 深圳钶钽智能技术有限公司 | Space partitioning-based detection device, system and method |
| CN108445549A (en) * | 2018-05-04 | 2018-08-24 | 深圳钶钽智能技术有限公司 | A kind of space partition zone detection system and method |
| CN111174923A (en) * | 2018-11-09 | 2020-05-19 | 众智光电科技股份有限公司 | Infrared array occupancy sensing device |
| CN110308493A (en) * | 2019-06-28 | 2019-10-08 | 深圳钶钽智能技术有限公司 | Human body detection method and device in space |
| CN111416610A (en) * | 2020-03-17 | 2020-07-14 | 艾礼富电子(深圳)有限公司 | Human body inductive switch and working method thereof |
| CN113640897A (en) * | 2021-08-05 | 2021-11-12 | 上海上实龙创智能科技股份有限公司 | Method and device for detecting human body in space, electronic equipment and storage medium |
| CN115112243A (en) * | 2022-05-24 | 2022-09-27 | 苏州纳芯微电子股份有限公司 | Non-contact temperature measuring method, device and equipment |
| CN115112243B (en) * | 2022-05-24 | 2023-09-12 | 苏州纳芯微电子股份有限公司 | Non-contact temperature measurement method, device and equipment |
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