CN106441596B - Array infrared thermopile sensing device and method for sensing - Google Patents
Array infrared thermopile sensing device and method for sensing Download PDFInfo
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- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000003491 array Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims 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
- 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 invention discloses a kind of array infrared thermopile sensing device and method for sensing, the device includes sensing module, it is corresponding with external detection region, sensing module includes multiple probe units, search coverage is divided into multiple subregions, each probe unit temperature sensor data and respectively output response signal by the investigative range of multiple probe units；Signal analyzes each subregional difference variation data in search coverage to processing module according to response, and when difference variation data are more than a jump threshold value, exports the judgement signal for having target object to occur in search coverage.In array infrared thermopile sensing device of the invention and method for sensing, by search coverage be divided into multiple subregions go forward side by side trip temperature data induction, and when difference variation data are more than a jump threshold value, the judgement signal for thering is target object to occur in output search coverage, to control by the jump amount to probe unit quantity and response signal, realize that there are formula monitoring to the human body in entire search coverage.
Description
Technical field
The present invention relates to human body, there are formula induction field more particularly to a kind of array infrared thermopile sensing devices and sensing
Method.
Background technique
In the prior art, there are a variety of monitoring modes to moving human body in specified region, such as pyroelectricity monitoring, microwave
Monitoring, infrared tube monitor and wait units thermopile infrared sensor to monitor.But there is certain disadvantage in above-mentioned each mode, below
It lists respectively.
The shortcomings that pyroelectricity monitors includes: 1, only has signal output to movable human body, is not responded to static human body
Output；2, only the human body of (0.1Hz-10Hz) lower to motion frequency generates signal output, is more than the people of 10Hz to motion frequency
Body activity is exported without response.
The shortcomings that microwave monitors includes: 1, only has response to export the human body of movement, is not responded to static human body defeated
Out；2, itself externally generates electromagnetic radiation.
The shortcomings that infrared tube monitors includes: that 1, monitoring distance is limited (generally less than 50 centimetres)；2, monitoring angle is small (only
There is response to probe front position).
The shortcomings that unit thermopile infrared sensor monitors includes: that 1, signal is weak, and the investigative range of realization is small, only 2-3
The distance of rice.Without using lens, detection range is short；Part detection range can be increased using lens, but detection angle narrows.This
Outside, the region for also residing in unit detection using the disadvantage of unit infrared thermopile sensor is bigger, when human body range sensor
When farther out, the specific gravity that human body accounts for its investigative range is very low.Human body with not in investigative range, caused thermopile IR
Whether the response voltage change very little of sensor, be not enough to for judging human body in investigative range.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of improved array infrared thermopile sensing device and sensing
Method.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of array infrared thermopile sensing dress
It sets, including
Sensing module, corresponding with an external detection region, the sensing module includes multiple probe units, and multiple institutes
It states the investigative range of probe unit and the search coverage is divided into multiple subregions, corresponding to each probe unit induction
Subregional temperature data simultaneously exports a response signal respectively；And
Processing module is connected with the sensing module and receives the response signal, and according to the response signal point
Each subregional difference variation data in the search coverage are analysed, and when the difference variation data are more than a jump threshold value,
Export the judgement signal for thering is target object to occur in the search coverage.
Preferably, the processing module further includes one first statistic unit, counts all difference variation data and is more than
The subregional quantity of the jump threshold value, and when statistical magnitude is more than an amount threshold, exporting has in the search coverage
The first comparison signal that target object occurs, the judgement signal includes first comparison signal.
Preferably, the processing module further includes one second statistic unit, counts all difference variation data and is more than
The area of the jump threshold value calculates statistics area and accounts for the area accounting of the search coverage area, and accounts in the area
When than more than an area accounting threshold value, the second comparison signal for having target object to occur in the search coverage is exported, it is described to sentence
Break signal includes second comparison signal.
Preferably, the processing module further includes a human body sensing unit, in the Current Temperatures of at least one probe unit
When being 36-37.5 DEG C, the judgement signal is exported；
And/or
The processing module further includes a pet-immune unit, is 38- in the Current Temperatures of at least one probe unit
At 39.5 DEG C, cancels and export the judgement signal.
Preferably, in the sensing module, the quantity that the probe unit is is 16, and is arranged in 4 × 4 arrays.
Preferably, the sensing module is thermopile infrared sensor.
Preferably, the processing module includes MCU chip and/or integrated circuit.
A kind of array infrared thermopile method for sensing is also provided, using sensing device, described method includes following steps:
A: the search coverage is divided into multiple points by the investigative range of multiple probe units in the sensing module
Region, each probe unit incude corresponding subregional temperature data and export a response signal respectively；
B: the processing module samples each subregional temperature data respectively；
C: the processing module judges whether each subregional difference variation data are more than jump threshold value, if so, executing
Step D；If it is not, then return step B；
D: the judgement signal for having target object to occur in the subregion is exported.
Preferably, further comprising the steps of: the processing module further includes one first statistic unit, and described further includes one first system
Unit is counted, all difference variation data is counted and is more than the subregional quantity of the jump threshold value, and judge statistical magnitude
Whether more than an amount threshold, if so, the first comparison signal for having target object to occur in the search coverage is exported, it is described
Judge that signal includes first comparison signal；If it is not, then return step B.
Preferably, further comprising the steps of: the processing module further includes one second statistic unit, counts all temperature difference and becomes
Change the area that data are more than the jump threshold value, calculates statistics area and account for the area accounting of the search coverage area, and sentence
Whether the area accounting of breaking is more than an area accounting threshold value, if so, exporting has target object appearance in the search coverage
The second comparison signal, the judgement signal includes second comparison signal；If it is not, then return step B.
The beneficial effects of the practice of the present invention is:, will in array infrared thermopile sensing device of the invention and method for sensing
Search coverage be divided into multiple subregions go forward side by side trip temperature data induction, and difference variation data be more than one jump threshold value when,
The judgement signal for thering is target object to occur in output search coverage, to pass through the jump to probe unit quantity and response signal
Amount is controlled, and realizes that there are formula monitoring to the human body in entire search coverage.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the module diagram of array infrared thermopile sensing device in some embodiments of the invention；
Fig. 2 is the flow diagram of array infrared thermopile method for sensing in some embodiments of the invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
Fig. 1 shows the array infrared thermopile sensing device in some embodiments of the invention, and thermopile IR is utilized
The response voltage principle relevant to the infra-red radiation total amount in its search coverage of sensor, by using mid and far infrared thermoelectric pile
Sensor carries out non-contact, passive detection and uses MCU operation, and achieving the purpose that human body, there are formula inductions.I.e. someone is detecting
There is response to export when in region, and whether someone carries out real-time, accurate measurements to search coverage, reaches the purpose of intelligent control.
Array infrared thermopile sensing device in the embodiment of the present invention also has response fast (within 100ms), specifies in region without blind
Area, contactless, passive type, monitoring distance can to 5 meters or it is farther the advantages that.Array infrared thermopile sensing device includes
Sensing module 10 and processing module 20, sensing module 10 are used for temperature sensor data, and processing module 20 is for analyzing difference variation
Data, and judge whether there is target object appearance in search coverage.
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 incudes corresponding point
The temperature data in region simultaneously exports a response signal respectively.The present embodiment is using small array infrared thermopile electric transducer to monitoring
Visual field division is carried out in region, and search coverage is divided into multiple or more than ten or even dozens of region.Alternatively, it senses
The quantity that probe unit 11 is in module 10 can be at least three, detect simultaneously in fact as long as can satisfy corresponding each subregion
The detecting function now responded.Preferably, the quantity that probe unit 11 is in sensing module 10 is 16, and is in 4 × 4 arrays
Formula arrangement.
Preferably, the sensing mode in the present embodiment is thermopile IR sensing mode, i.e., sensing module 10 is thermoelectric pile
Infrared sensor.Advantage using array thermopile infrared sensor is, search coverage is divided into multiple small subregions
Domain, even if human body range sensor is farther out, human body specific gravity shared in some small search coverage is still very high.Human body with
Not in search coverage, whether caused sensor voltage response is also sufficient to judge human body within the scope of the search coverage.
It can further can accurately judge whether someone in search coverage range according to the physical characteristic and motion feature of human body simultaneously
It is interior.
Processing module 20 is connected with sensing module 10 and receives response signal, and signal analyzes search coverage according to response
In each subregional difference variation data, and difference variation data be more than one jump threshold value when, export search coverage in have mesh
Mark the judgement signal that object occurs.Alternatively, which 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, alternatively, processing module 20 can also
The functional module of other forms is thought, as long as the function of response may be implemented.In some 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 to count all difference variation data more than the subregional quantity for jumping threshold value, and
When statistical magnitude is more than an amount threshold, the first comparison signal for having target object to occur in search coverage is exported, judges signal
Including the first comparison signal.Alternatively, amount threshold can be set according to specific requirements, and preferably 1.Alternatively, quantity
Threshold value may be other numerical value, such as 2,3,5 etc..
Second statistic unit 22 is used to count the area that all difference variation data are more than jump threshold value, calculates statistics face
Product accounts for the area accounting of search coverage area, and when area accounting is more than an area accounting threshold value, and exporting has in search coverage
The second comparison signal that target object occurs judges that signal includes the second comparison signal.Alternatively, area accounting threshold value can be with
It is set according to specific requirements, preferably 12.5%.Alternatively, area threshold may be other numerical value, such as 10%, 25%
Deng.
Human body sensing unit 23 is for sensing whether target object is human body.Human body sensing unit 23 is at least one detection
When the Current Temperatures of unit 11 are 36-37.5 DEG C, output judges signal.
Pet-immune unit 24 is for sensing whether target object is that the pets such as cat, dog do not issue and sentence in this case
Break signal.Pet-immune unit 24 is cancelled output and is sentenced when the Current Temperatures of at least one probe unit 11 are 38.5 DEG C or more
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 is illustrated the method flow in the present embodiment.Array infrared thermopile in the present embodiment
Method for sensing includes the following steps.
Firstly, in step, search coverage is divided into more by the investigative range of multiple probe units 11 in sensing module 10
A subregion, each probe unit 11 incude corresponding subregional temperature data and export a response signal respectively.Preferably,
Sensing mode in the present embodiment is thermopile IR sensing mode, i.e., sensing module 10 is thermopile infrared sensor.As
Selection, the quantity that probe unit 11 is in sensing module 10 can be at least three, if can satisfy corresponding each subregion into
Row detects and realizes the detecting function of response.Preferably, the quantity that probe unit 11 is in sensing module 10 is 16, and
It arranges in 4 × 4 arrays.
Then, in stepb, processing module 20 samples each subregional temperature data respectively.Preferably, processing module
20 include MCU chip and/or integrated circuit, alternatively, the functional module of processing module 20 or other forms, as long as can be with
Realize the function of response.
Later, in step C, processing module 20 judges whether each subregional difference variation data are more than jump threshold value,
If so, thening follow the steps D；If it is not, then return step B.Alternatively, which can be the number such as 0.1mV, 0.5mV, 1mV
Value, can be set according to specific requirements.
Alternatively, in some embodiments, may further comprise the step of: processing module 20 herein further includes that one first statistics is single
Member 21, further includes one first statistic unit 21, counts the subregional quantity that all difference variation data are more than jump threshold value, and
Statistical magnitude is judged whether more than an amount threshold, if so, having the first of target object appearance to compare in output search coverage
Signal judges that signal includes the first comparison signal；If it is not, then return step B.Alternatively, amount threshold can be according to specific
Demand is set, and preferably 1.Alternatively, amount threshold may be other numerical value, such as 2,3,5 etc..
Alternatively, in some embodiments, may further comprise the step of: processing module 20 herein further includes that one second statistics is single
Member 22 counts the area that all difference variation data are more than jump threshold value, calculates the face that statistics area accounts for search coverage area
Product accounting, and area accounting is judged whether more than an area accounting threshold value, if so, having target 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 step B.Alternatively, area accounting
Threshold value can be set according to specific requirements, and preferably 12.5%.Alternatively, area threshold may be other numerical value, such as
10%, 25% etc..
Finally, in step D, exporting the judgement signal for thering is target object to occur in subregion.
Alternatively, processing module 20 further includes human body sensing unit 23, for sensing whether target object is human body.People
For body sensing unit 23 when the Current Temperatures of at least one probe unit 11 are 36-37.5 DEG C, output judges signal.
Alternatively, processing module 20 further includes pet-immune unit 24, for sensing whether target object is cat, dog etc.
Pet does not issue judgement signal in this case.Current Temperatures of the pet-immune unit 24 at least one probe unit 11
When being 38.5 DEG C or more, cancels output and judge signal.
It should be noted that in the present embodiment the step of array infrared thermopile method for sensing with previous embodiment in array
Each functional module of infrared thermopile sensing device is corresponding, thus repeats no more.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection 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 it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of array infrared thermopile sensing device, which is characterized in that including
Sensing module (10), corresponding with an external detection region, the sensing module (10) includes multiple probe units (11),
And the search coverage is divided into multiple subregions by the investigative range of multiple probe units (11), each detection is single
First (11) incude corresponding subregional temperature data and export a response signal respectively, and the quantity of the probe unit (11) is
At least three；And
Processing module (20) is connected with the sensing module (10) and receives the response signal, and believed according to the response
Each subregional difference variation data in number analysis search coverage, and be more than one to jump threshold value in the difference variation data
When, export the judgement signal for thering is target object to occur in the search coverage.
2. array infrared thermopile sensing device according to claim 1, which is characterized in that the processing module (20) is also
Including one first statistic unit (21), the subregional number that all difference variation data are more than the jump threshold value is counted
Amount, and when statistical magnitude is more than an amount threshold, it exports there is target object to occur in the search coverage first and compares letter
Number, the judgement signal includes first comparison signal.
3. array infrared thermopile sensing device according to claim 1, which is characterized in that the processing module (20) is also
Including one second statistic unit (22), the area that all difference variation data are more than the jump threshold value is counted, is calculated
Statistics area accounts for the area accounting of the search coverage area, and when the area accounting is more than an area accounting threshold value, defeated
The second comparison signal for having target object to occur in the search coverage out, the judgement signal include described second comparing letter
Number.
4. array infrared thermopile sensing device according to any one of claims 1 to 3, which is characterized in that the processing
Module (20) further 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 the judgement signal；
And/or
The processing module (20) further includes a pet-immune unit (24), in the Current Temperatures of at least one probe unit (11)
When being 38.5 DEG C or more, cancels and export the judgement signal.
5. array infrared thermopile sensing device according to any one of claims 1 to 3, which is characterized in that the sensing
In module (10), the quantity that the probe unit (11) is is 16, and is arranged in 4 × 4 arrays.
6. array infrared thermopile sensing device according to any one of claims 1 to 3, which is characterized in that the sensing
Module (10) is thermopile infrared sensor.
7. array infrared thermopile sensing device according to any one of claims 1 to 3, which is characterized in that the processing
Module (20) includes MCU chip and/or integrated circuit.
8. a kind of array infrared thermopile method for sensing, which is characterized in that use the described in any item sensings of claim 1 to 7
Device, described method includes following steps:
A: the search coverage is divided into more by the investigative range of multiple probe units (11) in the sensing module (10)
A subregion, each probe unit (11) incude corresponding subregional temperature data and export a response signal respectively,
The quantity of the probe unit (11) is at least three；
B: the processing module (20) samples each subregional temperature data respectively；
C: the processing module (20) judges whether each subregional difference variation data are more than jump threshold value, if so, executing
Step D；If it is not, then return step B；
D: the judgement signal for having target object to occur in the subregion is exported.
9. array infrared thermopile method for sensing according to claim 8, which is characterized in that further comprise the steps of: the place
Managing module (20) further includes one first statistic unit (21), and counting all difference variation data is more than the jump threshold value
Subregional quantity, and statistical magnitude is judged whether more than an amount threshold, if so, exporting in the search coverage has target
The first comparison signal that object occurs, the judgement signal includes first comparison signal；If it is not, then return step B.
10. array infrared thermopile method for sensing according to claim 8, which is characterized in that further comprise the steps of: the place
Managing module (20) further includes one second statistic unit (22), and counting all difference variation data is more than the jump threshold value
Whether area calculates statistics area and accounts for the area accounting of the search coverage area, and judge the area accounting more than one
Area accounting threshold value, if so, the second comparison signal for having target object to occur in the search coverage is exported, the judgement letter
Number include second comparison signal；If it is not, then return step B.
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| CN107167851B (en) * | 2017-05-18 | 2023-12-26 | 深圳通感微电子有限公司 | Partition type infrared detector and partition type infrared detection method |
| WO2019006663A1 (en) * | 2017-07-04 | 2019-01-10 | 深圳通感微电子有限公司 | Infrared detector, and infrared detection 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN110308493B (en) * | 2019-06-28 | 2021-12-17 | 深圳钶钽智能技术有限公司 | Method and device for detecting human body 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 |
| 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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