CN105243418A - Pedestrian flow counting method and device based on infrared temperature measurement sensor - Google Patents
Pedestrian flow counting method and device based on infrared temperature measurement sensor Download PDFInfo
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- CN105243418A CN105243418A CN201510796925.6A CN201510796925A CN105243418A CN 105243418 A CN105243418 A CN 105243418A CN 201510796925 A CN201510796925 A CN 201510796925A CN 105243418 A CN105243418 A CN 105243418A
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Abstract
The invention discloses a pedestrian flow counting method and a pedestrian flow counting device based on an infrared temperature measurement sensor. According to the pedestrian flow counting method, 6 paths of temperature data on a same vertical line are acquired through an infrared temperature measurement sensing part which is placed on the side of an access, whether a person passes by is judged through analyzing the temperature data, whether the incoming and outgoing of the person end is judged by detecting a time interval when nobody passes, thus the incoming and outgoing information can be judged, control and measurement units transmit the incoming and outgoing information of people to an upper machine in real time, and the upper machine can record the current time, count number of people passing by an entrance and number of people passing by an exit within a time period and obtain the number of people in a place through difference between the two numbers, thereby achieving the automatic, accurate and reliable detection of number of the incoming and outgoing people. The pedestrian flow counting device comprises the infrared temperature measurement sensing part, a temperature acquisition/analysis part, a network device and a computer or an embedded processing device serving as the upper machine. The pedestrian flow counting improves the pedestrian flow counting stabilizability, precision and speed, and can be widely applied to entrances or public places.
Description
Technical field
The present invention relates to the people flow rate statistical field of in/out mouth, particularly a kind of people flow rate statistical method based on infrared temperature-test sensor and device.
Background technology
People flow rate statistical problem is the direction, forward position received much concern in computer vision, intelligent security-protecting and monitoring field in recent years.The public arenas such as market, tourist attractions, exhibition center can be widely used in, obtain the people's current density in current turnover flow of the people and region in time, for management, safe early warning, stream of people's guiding provide Data support.
Existing people flow rate statistical method mainly contains and judges detection method and the humanoid characteristic detection method based on image/video process based on stop that is infrared and ultrasonic technology.Undertaken often being difficult to when the stream of people adds up judge true and false human body target by stop judgement based on infrared and ultrasonic technology; Based on the humanoid characteristic detection method of image/video process, the method be often difficult to by carrying out modeling to complete human body obtains the kinematic parameter of human body, and once there is congested conditions, the situation that then human body presents in the picture will be more complicated, detect very difficult, accuracy rate is not high, only can detect the human figure object passed through, can not judge true man or dummy.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, and a kind of people flow rate statistical method based on infrared temperature-test sensor and device are provided, the method improving infrared, laser and ultrasonic technology by stopping the shortcoming judging to carry out often being difficult to when the stream of people adds up judge true and false human body target, accuracy rate is not high, can judge true and false people according to temperature;
This device have easy to detect, accuracy rate is high, speed is fast and the advantage that can judge true and false people.
Realize the technical scheme of the object of the invention:
Based on a people flow rate statistical method for infrared temperature-test sensor, comprise the steps:
1) temperature data acquisition, is arranged on each outlet or entrance, gathers a certain perpendicular line from the side and be taken in people through out-of-date temperature variation by the infrared measurement of temperature transducing part be made up of high precision infrared temperature-test sensor;
2) analysis of temperature data, infrared measurement of temperature transducing part is arranged on out or the side of entrance, and be made up of the six tunnel high precision infrared temperature-test sensors formed a line, people causes the temperature value of wherein some sensor collection to give birth to change through out-of-date meeting.Human body is through out-of-date, and the temperature that infrared temperature-test sensor records people's body surface generally comparatively stabilizes to about 30 DEG C.Therefore centered by 30 DEG C, set up a body surface temperature range, by calculating the average dropping on this silicon carbide, removing the interference of the factors such as environment, determining whether people's shell temperature simultaneously.
3) stream of people's quantitative statistics, when having detected that people's shell temperature occurs, then representative has had people to pass in and out, by judging that whether people's shell temperature occurs and the time length of being interrupted judges whether the turnover of people completes.
Step 1) in, infrared measurement of temperature transducing part is installed on the side of outlet or entrance, its height is suitable with the height of an adult, equidistantly 6 high precision infrared temperature-test sensors are installed in part, the temperature data that No. 6 sensors export each via the SMBus way of output directly enter temperature acquisition analysis part, by the temperature data change that analyst adopts through out-of-date each sensor, judge whether that someone passes through.
Step 2) in, centered by 30 DEG C, ± 3 DEG C is scope, sets up a body surface temperature range, if the temperature that 6 road infrared temperature-test sensor a certain moment gathered is respectively: t
1, t
2, t
3, t
4, t
5, t
6, and drop on shell temperature interval have t
2, t
4, t
6, calculate corresponding mean value:
When
time, then think people's shell temperature, have people's process, we choose T
1=32 DEG C, T
2=28 DEG C.
Step 3) in, when
time, then think that someone passes in and out; The determination methods that completes of turnover is: requirement
or
require duration t>N simultaneously
1, get N
1for 50ms; The information that finally passes in and out sends to host computer in real time, and host computer can record current time, can count the number of people entering of a certain gateway in certain period, and draws the existing number in place by both differences.
Based on a people flow rate statistical device for infrared temperature-test sensor, comprise infrared measurement of temperature transducing part, temperature acquisition/analysis part and network portion composition;
Infrared measurement of temperature transducing part and temperature acquisition/analysis part are connected on computing machine or embedded processing equipment by the network equipment, and user can control their unlatching or closedown.
Infrared measurement of temperature transducing part, comprise the first infrared sensor, the second infrared sensor, the 3rd infrared sensor, the 4th infrared sensor, the 5th infrared sensor, the 6th infrared sensor and mounting bracket, first to the 6th infrared sensor, be fixedly mounted on mounting bracket, between infrared sensor, be divided into 30
~40cm, taking measurement of an angle of infrared sensor is about 30 DEG C, and mounting bracket is fitted in the side in region to be measured, and infrared sensor horizontal checkout women's head-ornaments are treated test zone and installed, for being digital signal by district to be tested temperature inversion, and send to temperature acquisition analysis part.
Temperature acquisition analysis part, comprise embedded processing module, for to gather temperature data in district to be tested and by analysis temperature data, judge whether it is true man dummy, must by the number of surveyed area, simultaneous temperature gather analysis part can arrange multiple, each import and export are detected, thus obtain the number in whole place;
Described Wen Ducaiji analysis part gather current infrared measurement of temperature transducing part 6 road temperature datas after, temperature data is analyzed, judges whether that someone passes through;
Described embedded processing module is made up of microprocessor minimum system, has been mainly used in the collection control of temperature data, the analysis of data, and whether has had the judgement of people's process;
Network portion comprises communication module and mixed-media network modules mixed-media, receive temperature acquisition analysis part number of people entering and with synchronous transmission host computer data center, realize data management, preservation.
Beneficial effect
The invention provides a kind of people flow rate statistical method based on infrared temperature-test sensor and device,
The method, by being arranged on the multichannel infrared temperature-test sensor collecting temperature data of outlet or entrance, utilizes people through the change of out-of-date temperature data to add up the number of turnover.Everyone shell temperature substantially constant, measured greatly about about 30 DEG C by infrared temperature-test sensor, the medial temperature within the scope of adding up 27-33 DEG C, when medial temperature is 28-32 DEG C, then thinks people's shell temperature, and representative has people to pass through; The time length disappeared by human body temperature judges whether the turnover of people completes, and when die-out time is more than 50ms, representative's turnover completes.Due to people's shell temperature substantially constant and be different from other object, the method improve infrared and ultrasonic technology by stopping the shortcoming judging to carry out often being difficult to when the stream of people adds up judge true and false human body target, accuracy rate is not high.
This device adopts and comprises multiple probe unit, and each probe unit is a human sensing system, by an infrared measurement of temperature transducing part, temperature acquisition analysis part and fixed frame form.Infrared measurement of temperature transducing part is on a vertical fixed strip, every about 30cm, an infrared temperature-test sensor is installed, it is about 30 degree that its of infrared temperature-test sensor takes measurement of an angle, 6 infrared temperature-test sensors are installed altogether, thus the detection adapted to different height people, after recording the temperature data of 6 different vertical positions, by the SMBus way of output send to temperature acquisition analysis part; Temperature acquisition analysis part be made up of embedded system and communications portion, mainly complete the continuous collecting of temperature data, real-time analysis.This device can be widely applied to each entrance or public arena, have easy to detect, accuracy rate is high, speed is fast and the advantage that can judge true and false people.
Accompanying drawing explanation
Fig. 1 is the structural schematic block diagram of people flow rate statistical device in embodiment;
Fig. 2 is analysis and stream of people's statistical flowsheet figure of temperature data in people flow rate statistical method in embodiment;
Embodiment
Below in conjunction with embodiment and accompanying drawing, content of the present invention is further described, but is not limitation of the invention.
Embodiment:
Realize the technical scheme of the object of the invention:
Based on a people flow rate statistical method for infrared temperature-test sensor, comprise the steps:
1) temperature data acquisition, is arranged on each outlet or entrance, gathers a certain perpendicular line from the side and be taken in people through out-of-date temperature variation by the infrared measurement of temperature transducing part be made up of high precision infrared temperature-test sensor;
2) analysis of temperature data, infrared measurement of temperature transducing part is arranged on out or the side of entrance, and be made up of the six tunnel high precision infrared temperature-test sensors formed a line, people causes the temperature value of wherein some sensor collection to give birth to change through out-of-date meeting.Human body is through out-of-date, and the temperature that infrared temperature-test sensor records people's body surface generally comparatively stabilizes to about 30 DEG C.Therefore centered by 30 DEG C, set up a body surface temperature range, by calculating the average dropping on this silicon carbide, removing the interference of the factors such as environment, determining whether people's shell temperature simultaneously.
3) stream of people's quantitative statistics, when having detected that people's shell temperature occurs, then representative has had people to pass in and out, by judging that whether people's shell temperature occurs and the time length of being interrupted judges whether the turnover of people completes.
Step 1) in, infrared measurement of temperature transducing part is installed on the side of outlet or entrance, its height is suitable with the height of an adult, equidistantly 6 high precision infrared temperature-test sensors are installed in part, the temperature data that No. 6 sensors export each via the SMBus way of output directly enter temperature acquisition analysis part, by the temperature data change that analyst adopts through out-of-date each sensor, judge whether that someone passes through.
Step 2) in, centered by 30 DEG C, ± 3 DEG C is scope, sets up a body surface temperature range, if the temperature that 6 road infrared temperature-test sensor a certain moment gathered is respectively: t
1, t
2, t
3, t
4, t
5, t
6, and drop on shell temperature interval have t
2, t
4, t
6, calculate corresponding mean value:
When
time, then think people's shell temperature, have people's process, we choose T
1=32 DEG C, T
2=28 DEG C.
Step 3) in, when
time, then think that someone passes in and out; The determination methods that completes of turnover is: requirement
or
require duration t>N simultaneously
1, get N
1for 50ms; The information that finally passes in and out sends to host computer in real time, and host computer can record current time, can count the number of people entering of a certain gateway in certain period, and draws the existing number in place by both differences.
As shown in Figure 1:
Based on a people flow rate statistical device for infrared temperature-test sensor, comprise infrared measurement of temperature transducing part 1, temperature acquisition/analysis part 2 and network portion 3 and form;
Infrared measurement of temperature transducing part 1 and temperature acquisition/analysis part 2 are connected on computing machine or embedded processing equipment by network portion 3, and user can control their unlatching or closedown.
Infrared measurement of temperature transducing part 1, comprise the first infrared sensor 4, second infrared sensor 5, the 3rd infrared sensor 6, the 4th infrared sensor 7, the 5th infrared sensor 8, the 6th infrared sensor 9 and mounting bracket 10, first outer sensor 4 is to the 6th infrared sensor 9, to be fixedly mounted on mounting bracket 10 respectively, between each infrared sensor, to be divided into 30
~40cm, taking measurement of an angle of each infrared sensor is about 30 DEG C, mounting bracket is fitted in the side in region to be measured, first outer sensor 4 to the 6th infrared sensor 9 horizontal checkout women's head-ornaments are treated test zone and are installed, for being digital signal by district to be tested temperature inversion, and send to temperature acquisition analysis part 2.
Temperature acquisition analysis part 2, comprise embedded processing module 11, for to gather temperature data in district to be tested and by analysis temperature data, judge whether it is true man dummy, must by the number of surveyed area, simultaneous temperature gather analysis part 2 can arrange multiple, each import and export are detected, thus obtain the number in whole place;
Described Wen Ducaiji analysis part 2 gather current infrared measurement of temperature transducing part 1 1-6 road temperature data after, temperature data is analyzed, judges whether that someone passes through;
Described embedded processing module 11 is made up of microprocessor minimum system, has been mainly used in the collection control of temperature data, the analysis of data, and whether has had the judgement of people's process;
Network portion 3 comprises communication module 12 and mixed-media network modules mixed-media 13, receive temperature acquisition analysis part 2 number of people entering and with synchronous transmission host computer data center, realize data management, preservation.
As shown in Figure 2:
S101 starts, and completes infrared temperature-test sensor, the initialization of communications portion and the setting of parameter, starts infrared temperature-test sensor collecting temperature;
S102 reads current channel temperature data, infrared temperature-test sensor with SMBus pattern output temperature data, by SDA and the SCL pin of Microprocessor S3C44B0X sensor, reading temperature data.Such as its temperature data size of infrared temperature-test sensor MLX90614ESF-BCC is 2 bytes, totally 16, simultaneously also with exporting an error data bag, whether the data that can be used for verifying transmission are wrong, the temperature data totally 16 received, be saved in respectively in DataH and DataL, the method being converted into the real-coded GA of the relative zero temperature that we are familiar with is:
t
i＝(DataH*255+Datal)Z*0.02-273.15(2)
S103 upgrades current channel temperature data, when carrying out temperature data buffer memory, be designed with the floating type array t [1] that a length is 6, t [2], t [3], t [4], t [5], t [6] is respectively used to store infrared temperature-test sensor 18, infrared temperature-test sensor 29, infrared temperature-test sensor 310, infrared temperature-test sensor 411, infrared temperature-test sensor 512, the temperature data that infrared temperature-test sensor 613 gathers, whether simultaneously each passage also has is the logical type zone bit B [1] of shell temperature, B [2], B [3], B [4], B [5], B [6], when being " 1 " for mark position corresponding during shell temperature otherwise for " 0 ", work as T
4>t
i>T
3be think shell temperature, we set T
3=27, T
4=33,
S104 calculates the passage average being in shell temperature interval, the channel temperature that all shell temperatures are masked as " 1 " is asked arithmetic mean, if average is
Does is S105 that people's shell temperature is no?, judge the average that S104 calculates
whether be people's shell temperature, when
time, then think people's shell temperature, representative have people's process, we choose T
1=32 DEG C, T
2=28 DEG C;
S106 arranges people's body mark, when people's shell temperature being detected, is then set to " 1 " by human body indexed variable, represents just there is being people through gateway;
S107 stops timing, stops the unmanned timing through status timer in entry and exit;
Does is S108 human body masked as very?, when people's shell temperature not detected, whether human body indexed variable is " 1 ", namely judges whether a upper moment has people to pass through;
S109 starts timer, when detecting that just there had been people's process in a upper moment, and the unmanned process of current time, then start unmanned through status timer, start unmanned through the timing of state for time length;
S110 removes people's body mark, is set to " 0 " by human body indexed variable, and representative is unmanned through gateway at that time;
S111 timing time t>N
1, unmanned through out-of-date when a upper moment, then judge whether unmanned elapsed time is greater than the threshold value N of setting
1if be greater than N
1, then commissarial into and out of having stablized;
S112 upgrade into and out of number, when detected people stablize turnover complete time, then communicate with host computer 1, renewal number of people entering;
It is current channel that S113 arranges next passage, is the process of current channel, circulation S101 to S112 by next channel setting.
Claims (10)
1., based on a people flow rate statistical method for infrared temperature-test sensor, it is characterized in that, comprise the steps:
1) temperature data acquisition, is arranged on each outlet or entrance, gathers a certain perpendicular line from the side and be taken in people through out-of-date temperature variation by the infrared measurement of temperature transducing part be made up of high precision infrared temperature-test sensor;
2) analysis of temperature data, infrared measurement of temperature transducing part is arranged on out or the side of entrance, and be made up of the six tunnel high precision infrared temperature-test sensors formed a line, people causes the temperature value of wherein some sensor collection to give birth to change through out-of-date meeting.Human body is through out-of-date, and the temperature that infrared temperature-test sensor records people's body surface generally comparatively stabilizes to about 30 DEG C.Therefore centered by 30 DEG C, set up a body surface temperature range, by calculating the average dropping on this silicon carbide, removing the interference of the factors such as environment, determining whether people's shell temperature simultaneously.
3) stream of people's quantitative statistics, when having detected that people's shell temperature occurs, then representative has had people to pass in and out, by judging that whether people's shell temperature occurs and the time length of being interrupted judges whether the turnover of people completes.
2. the people flow rate statistical method based on infrared temperature-test sensor according to claim 1, it is characterized in that, step 1) in, infrared measurement of temperature transducing part is installed on the side of outlet or entrance, its height is suitable with the height of an adult, equidistantly 6 high precision infrared temperature-test sensors are installed in part, the temperature data that No. 6 sensors export each via the SMBus way of output directly enter temperature acquisition analysis part, by the temperature data change that analyst adopts through out-of-date each sensor, judge whether that someone passes through.
3. the people flow rate statistical method based on infrared temperature-test sensor according to claim 1, is characterized in that, step 2) in, centered by 30 DEG C, ± 3 DEG C is scope, sets up a body surface temperature range, if the temperature that 6 road infrared temperature-test sensor a certain moment gathered is respectively: t
1, t
2, t
3, t
4, t
5, t
6, and drop on shell temperature interval have t
2, t
4, t
6, calculate corresponding mean value:
When
time, then think people's shell temperature, have people's process, we choose T
1=32 DEG C, T
2=28 DEG C.
4. the people flow rate statistical method based on infrared temperature-test sensor according to claim 1, is characterized in that, step 3) in, when
time, then think that someone passes in and out; The determination methods that completes of turnover is: requirement
or
require duration t>N simultaneously
1, get N
1for 50ms; The information that finally passes in and out sends to host computer in real time, and host computer can record current time, can count the number of people entering of a certain gateway in certain period, and draws the existing number in place by both differences.
5. based on a people flow rate statistical device for infrared temperature-test sensor, it is characterized in that, comprise infrared measurement of temperature transducing part, temperature acquisition/analysis part and network portion composition;
Infrared measurement of temperature transducing part and temperature acquisition/analysis part are connected on computing machine or embedded processing equipment by the network equipment, and user can control their unlatching or closedown.
6. the people flow rate statistical device based on infrared temperature-test sensor according to claim 5, it is characterized in that, infrared measurement of temperature transducing part, comprise the first infrared sensor, second infrared sensor, 3rd infrared sensor, 4th infrared sensor, 5th infrared sensor, 6th infrared sensor and mounting bracket, first to the 6th infrared sensor, be fixedly mounted on mounting bracket, 30 ~ 40cm is divided between infrared sensor, taking measurement of an angle of infrared sensor is about 30 DEG C, mounting bracket is fitted in the side in region to be measured, infrared sensor horizontal checkout women's head-ornaments are treated test zone and are installed, for being digital signal by district to be tested temperature inversion, and send to temperature acquisition analysis part.
7. the people flow rate statistical device based on infrared temperature-test sensor according to claim 5, it is characterized in that, temperature acquisition analysis part, comprise embedded processing module, for to gather temperature data in district to be tested and by analysis temperature data, judge whether it is true man dummy, and must by the number of surveyed area.
8. the people flow rate statistical device based on infrared temperature-test sensor according to claim 7, it is characterized in that, described Wen Ducaiji analysis part gather current infrared measurement of temperature transducing part 6 road temperature datas after, temperature data is analyzed, judges whether that someone passes through.
9. the people flow rate statistical device based on infrared temperature-test sensor according to claim 7, it is characterized in that, described embedded processing module is made up of microprocessor minimum system, has been mainly used in the collection control of temperature data, the analysis of data, and whether has had the judgement of people's process.
10. the people flow rate statistical device based on infrared temperature-test sensor according to claim 5, it is characterized in that, network portion comprises communication module and mixed-media network modules mixed-media, receive temperature acquisition analysis part number of people entering and with synchronous transmission host computer data center, realize data management, preservation.
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Application publication date: 20160113 |