CN105513177A - LED visible light communication-based flow density statistics system and method - Google Patents
LED visible light communication-based flow density statistics system and method Download PDFInfo
- Publication number
- CN105513177A CN105513177A CN201510887346.2A CN201510887346A CN105513177A CN 105513177 A CN105513177 A CN 105513177A CN 201510887346 A CN201510887346 A CN 201510887346A CN 105513177 A CN105513177 A CN 105513177A
- Authority
- CN
- China
- Prior art keywords
- people
- visible light
- statistics
- led
- indoor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/38—Individual registration on entry or exit not involving the use of a pass with central registration
Abstract
The invention discloses an LED visible light communication-based flow density statistics system. The system comprises a host computer, a transmitting terminal and a receiving terminal; the transmitting terminal is mounted on a ceiling, and comprises a transmitting circuit and an LED array; the receiving terminal is mounted on a floor and comprises a photoelectric detector and a receiving circuit; the host computer is connected with the transmitting circuit and the receiving circuit; the LED array and the photoelectric detector adopt a direct-injection type line-of-sight link. According to the system, the LED visible light communication technology is utilized to perform indoor flow and density statistics, so that not only is an indoor lighting requirement met, but also the flow density statistics alarming is realized. The method has the characteristics of being safe, efficient, high in quality, low in cost and convenient to use.
Description
Technical field
The present invention relates to LED visible light communication technical field, be specifically related to a kind of stream of people's Statistics of Density system based on LED visible light communication and statistical method.
Background technology
The highdensity LED illumination light source of miniwatt is the undersized LED new packaging form of one derived for the demand of projection lighting light source to make up market.Because LED visible light light fixture has the plurality of advantages such as integration degree is high, cheap, energy consumption is low, the life-span is long, security is high, brightness of illumination is large, adaptable, become the optimal selection of indoor and outdoor lighting light source gradually.Ripe day by day and the widespread use of the LED illumination technology new development opportunity that has been visible ray communication band.
Between festivals or holidays and active stage, in indoor places such as some large-scale square, markets, the situation that the people's current density that there will be increases suddenly.Crowd's tread event that during New Year's Day in 2015, Shanghai occurs, to how adding up large-scale indoor place people's current density, avoiding similar incidents occur, has beaten alarm bell.Therefore, existing people flow rate statistical technology mainly contains three kinds:
1. radio monitoring mode, along with the growing tension of radio spectrum resources, a lot of frequency range is occupied, uses radio frequency band to examine mandate, and disturbs comparatively large between the wireless device of adjacent frequency range, is difficult to meet reality need;
2. infrared detection mode, may cause adverse effect to human eye, is unfavorable for the health of people to a certain extent.
3. video detection mode, need use camera, image analysis system etc., cost is high.
Research and develop the stream of people's Statistics of Density system being applicable to large-scale indoor place that a kind of safe and efficient, of fine quality valency is low, easy to use, with accurate statistics people current density, avoid crowded, become problem demanding prompt solution.
Summary of the invention
The invention provides and a kind ofly not only can to have thrown light on, but also the stream of people's Statistics of Density system based on LED visible light communication of stream of people's statistics can be carried out, to solve the deficiency of prior art problem.
For achieving the above object, the technical solution used in the present invention is:
A kind of stream of people's Statistics of Density system based on LED visible light communication, comprise host computer, transmitting terminal, receiving end, described transmitting terminal is installed on the ceiling, comprise radiating circuit, LED array, described receiving end is arranged on floor, comprise photodetector, receiving circuit, described host computer is connected with radiating circuit, receiving circuit, and described LED array and photodetector adopt direct-injection type line of sight link.Under PC control, electric signal controls LED array through radiating circuit and produces LED visible light signal, and described photoelectric detector light intensity signal is converted into electric signal by receiving circuit, transfers to host computer analytic statistics.
Preferably, described photodetector comprises photodiode, described photodiode comprise connect successively from top to bottom N district, I district, P district, substrate, syndeton.Because photodiode is all reverse operation state in circuit, when not having illumination, back resistance is very large, and inverse current (i.e. dark current) is very little; When light is radiated on PN junction, photon is beaten near PN junction, makes to produce light induced electron and photohole pair near PN junction, and they do directed movement under the effect of PN junction place internal electric field, form photocurrent.In photodiode, electric current is directly proportional to incident optical power, and its formula is I=RP, and wherein, I is the electric current that photodiode produces, and R is the responsiveness of photoelectric detector, and P is the luminous power of incident light.The illumination of light is larger, and photocurrent is larger, and therefore photodiode is in by state when light is not irradiated, and is in conducting state when light is irradiated.
Preferably, described photodetector is installed on position, indoor import corridor.
Preferably, described photodetector is also installed on indoor exit lane position.
Preferably, described LED array adopts the powered by direct current of 12V-24V.Like this, available low voltage brings high brightness effect, to reach the object of power saving and reduction use cost, ensure that Electrical Safety simultaneously, can not cause electric shock accidents.
Preferably, described LED array adopts high-capacity LED array, to meet the double requirements of communication and illumination simultaneously, makes system worked well.
Preferably, the top of described photodetector is provided with tempered glass.So neither affect the actual illumination communication of LED visible light, can protect the receiving end photo-detector of LED visible light communication again.
Preferably, described host computer is connected with warning device.When indoor people's current density reaches setting value, warning device is reported to the police, and reminds staff to stop to indoor clearance personnel, dredges indoor occupant simultaneously and prevent from trampling, leaving in order.
In sum, stream of people's Statistics of Density system based on LED visible light communication of the present invention utilizes LED visible light communication technology to carry out indoor visitor flow rate and Statistics of Density, namely room lighting demand is met, complete again stream of people's Statistics of Density to report to the police, have the advantages that valency safe and efficient, of fine quality is low, easy to use.
For realizing above-mentioned purpose better, the present invention also provides a kind of utilization to carry out the statistical method of stream of people's Statistics of Density based on stream of people's Statistics of Density system of LED visible light communication, and concrete, described statistical method comprises the following steps:
S1. can hold personnel's area etc. according to indoor, carry out parameter by host computer and preset;
S2., when indoor place is open, start up system is started working, and LED array sends visible ray and provides illumination, the intensity variation of photodetector detection simultaneously, when nobody is by indoor entrance, visible light signal is strong, photodetector forms photocurrent, and inflow number counting does not increase;
When S3. having people by entrance, the visible light signal that LED array sends is subject to the stop of people, and photodetector forms dark current, and receiving circuit changes into electric signal according to curent change, and host computer, according to electric signal, adds 1 to inflow population number meter number;
S4. when someone passes through outlet, the visible light signal that LED array sends is subject to the stop of people, and photodetector forms dark current, and receiving circuit changes into electric signal according to curent change, and host computer, according to electric signal, adds 1 to outflow population number meter number.Host computer, according to parameter preset and inflow, outflow number, draws indoor people's current density;
S5., when indoor place is closed, according to flow of the people and density, personnel are cleared out a gathering place, prevent indoor occupant to be put into indoor, after all clear, system closing.
Preferably, host computer is provided with people's current density early warning value, when people's current density reaches early warning value, is reported to the police by triggering alarm system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the stream of people's Statistics of Density system that the present invention is based on LED visible light communication;
Fig. 2 is the stream of people's Statistics of Density systematic difference scene schematic diagram that the present invention is based on LED visible light communication;
Fig. 3 is the structural representation of the stream of people's Statistics of Density system photodiode that the present invention is based on LED visible light communication;
Fig. 4 is the stream of people's Statistics of Density working-flow sketch that the present invention is based on LED visible light communication.
Wherein: 1. host computer, 2. warning device, 3. syndeton, 4. ceiling, 5. radiating circuit, 6.LED array, 7. floor, 8. photodetector, 9. receiving circuit, 10.N district, 11.I district, 12.P district, 13. substrates, 14. tempered glass.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are further elaborated.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
With reference to shown in Fig. 1, Fig. 2, comprise host computer 1, transmitting terminal, receiving end, described transmitting terminal is arranged on ceiling 4, comprise radiating circuit 5, LED array 6, described receiving end is arranged on floor 7, comprise photodetector 8, receiving circuit 9, described host computer 1 is connected with radiating circuit 5, receiving circuit 9, and described LED array 6 adopts direct-injection type line of sight link with photodetector 8.Under host computer 1 controls, electric signal controls LED array 6 through radiating circuit 5 and produces LED visible light signal, and described photodetector 8 receiving light power degree signal is converted into electric signal by receiving circuit 9, transfers to host computer 1 analytic statistics.
Described photodetector 8 comprises photodiode, with reference to shown in Fig. 3, described photodiode comprise connect successively from top to bottom N district 10, I district 11, P district 12, substrate 13, syndeton 3.Because photodiode is all reverse operation state in circuit, when not having illumination, back resistance is very large, and inverse current (i.e. dark current) is very little; When light is radiated on PN junction, photon is beaten near PN junction, makes to produce light induced electron and photohole pair near PN junction, and they do directed movement under the effect of PN junction place internal electric field, form photocurrent.In photodiode, electric current is directly proportional to incident optical power, and its formula is I=RP, and wherein, I is the electric current that photodiode produces, and R is the responsiveness of photoelectric detector, and P is the luminous power of incident light.The illumination of light is larger, and photocurrent is larger, and therefore photodiode is in by state when light is not irradiated, and is in conducting state when light is irradiated.
Described photodetector 8 is installed on position, indoor import corridor, can add up entering indoor number, thus draws and enter flow of the people.Described photodetector 8 is also installed on indoor exit lane position, to add up leaving indoor number simultaneously, thus draws and leaves flow of the people.Both combine, and can draw the number in indoor and people's current density.
Described LED array 6 adopts the powered by direct current of 12V-24V.Like this, available low voltage brings high brightness effect, to reach the object of power saving and reduction use cost, ensure that Electrical Safety simultaneously, can not cause electric shock accidents.Described LED array 6 adopts high-capacity LED array 6, to meet the double requirements of communication and illumination simultaneously, makes system worked well.The top of described photodetector 8 is provided with tempered glass.So neither affect the actual illumination communication of LED visible light, can protect the receiving end photo-detector of LED visible light communication again.
With reference to shown in Fig. 1, described host computer 1 is connected with warning device 2.When indoor people's current density reaches setting value, warning device 2 is reported to the police, and reminds staff to stop to indoor clearance personnel, dredges indoor occupant simultaneously and prevent from trampling, leaving in order.
In sum, stream of people's Statistics of Density system based on LED visible light communication of the present invention utilizes LED visible light communication technology to carry out indoor visitor flow rate and Statistics of Density, namely room lighting demand is met, complete again stream of people's Statistics of Density to report to the police, have the advantages that valency safe and efficient, of fine quality is low, easy to use.
For realizing above-mentioned purpose better, the present invention also provides a kind of utilization to carry out the statistical method of stream of people's Statistics of Density based on stream of people's Statistics of Density system of LED visible light communication, and concrete, described statistical method comprises the following steps:
S1. can hold personnel's area etc. according to indoor, carry out parameter by host computer 1 and preset;
S2. with reference to shown in Fig. 4, when indoor place is open, start up system is started working, LED array 6 sends visible ray and provides illumination, photodetector 8 detects intensity variation simultaneously, and when nobody is by indoor entrance, visible light signal is strong, photodetector 8 forms photocurrent, and inflow number counting does not increase;
S3. when there being people by entrance, the visible light signal that LED array 6 sends is subject to the stop of people, and photodetector 8 forms dark current, and receiving circuit 9 changes into electric signal according to curent change, and host computer 1, according to electric signal, adds 1 to inflow population number meter number;
S4. when someone passes through outlet, the visible light signal that LED array 6 sends is subject to the stop of people, and photodetector 8 forms dark current, and receiving circuit 9 changes into electric signal according to curent change, and host computer 1, according to electric signal, adds 1 to outflow population number meter number.Host computer 1, according to parameter preset and inflow, outflow number, draws indoor people's current density;
S5., when indoor place is closed, according to flow of the people and density, personnel are cleared out a gathering place, prevent indoor occupant to be put into indoor, after all clear, system closing.
For preventing the stream of people too intensive, host computer 1 is provided with people's current density early warning value, when people's current density reaches early warning value, is reported to the police by triggering alarm system.
It is last it is noted that the above embodiment is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. based on stream of people's Statistics of Density system of LED visible light communication, it is characterized in that, described stream of people's Statistics of Density system based on LED visible light communication comprises host computer, transmitting terminal, receiving end, described transmitting terminal is installed on the ceiling, comprise radiating circuit, LED array, described receiving end is arranged on floor, comprises photodetector, receiving circuit, described host computer is connected with radiating circuit, receiving circuit, and described LED array and photodetector adopt direct-injection type line of sight link.
2. the stream of people's Statistics of Density system based on LED visible light communication according to claim 1, it is characterized in that, described photodetector comprises photodiode, described photodiode comprise connect successively from top to bottom N district, I district, P district, substrate, syndeton.
3. the stream of people's Statistics of Density system based on LED visible light communication according to claim 2, is characterized in that, described photodetector is installed on position, indoor import corridor.
4. the stream of people's Statistics of Density system based on LED visible light communication according to claim 3, it is characterized in that, described photodetector is also installed on indoor exit lane position.
5. the stream of people's Statistics of Density system based on LED visible light communication according to any one of claim 1-4, is characterized in that, described LED array adopts the powered by direct current of 12V-24V.
6. the stream of people's Statistics of Density system based on LED visible light communication according to claim 5, is characterized in that, described LED array adopts high-capacity LED array.
7. the stream of people's Statistics of Density system based on LED visible light communication according to claim 6, it is characterized in that, the top of described photodetector is provided with tempered glass.
8. the stream of people's Statistics of Density system based on LED visible light communication according to claim 7, it is characterized in that, described host computer is connected with warning device.
9. utilize the statistical method based on stream of people's Statistics of Density system of LED visible light communication, it is characterized in that, comprise the steps:
S1. can hold personnel's area etc. according to indoor, carry out parameter by host computer and preset;
S2., when indoor place is open, start up system is started working, and LED array sends visible ray and provides illumination, the intensity variation of photodetector detection simultaneously, when nobody is by indoor entrance, visible light signal is strong, photodetector forms photocurrent, and inflow number counting does not increase;
When S3. having people by entrance, the visible light signal that LED array sends is subject to the stop of people, and photodetector forms dark current, and receiving circuit changes into electric signal according to curent change, and host computer, according to electric signal, adds 1 to inflow population number meter number;
S4. when someone passes through outlet, the visible light signal that LED array sends is subject to the stop of people, and photodetector forms dark current, and receiving circuit changes into electric signal according to curent change, and host computer, according to electric signal, adds 1 to outflow population number meter number.Host computer, according to parameter preset and inflow, outflow number, draws indoor people's current density;
S5., when indoor place is closed, according to flow of the people and density, personnel are cleared out a gathering place, prevent indoor occupant to be put into indoor, after all clear, system closing.
10. statistical method according to claim 9, is characterized in that, host computer is provided with people's current density early warning value, when people's current density reaches early warning value, is reported to the police by triggering alarm system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510887346.2A CN105513177A (en) | 2015-12-04 | 2015-12-04 | LED visible light communication-based flow density statistics system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510887346.2A CN105513177A (en) | 2015-12-04 | 2015-12-04 | LED visible light communication-based flow density statistics system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105513177A true CN105513177A (en) | 2016-04-20 |
Family
ID=55721128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510887346.2A Pending CN105513177A (en) | 2015-12-04 | 2015-12-04 | LED visible light communication-based flow density statistics system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105513177A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192981A (en) * | 2017-04-28 | 2017-09-22 | 天津大学 | Visible ray alignment system and method based on illumination shade and machine learning |
| CN107808485A (en) * | 2017-10-24 | 2018-03-16 | 上海第二工业大学 | A kind of method that burning things which may cause a fire disaster is detected using visible light communication |
| CN107808476A (en) * | 2017-10-24 | 2018-03-16 | 上海第二工业大学 | The visible ray fire defector network of safe escape path in a kind of prediction building |
| CN108597228A (en) * | 2018-05-30 | 2018-09-28 | 中国科学技术大学 | Traffic flow intelligent perception system and method based on visible light perception |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120217397A1 (en) * | 2011-02-25 | 2012-08-30 | Noone David Robert | Low profile light collimator micro baffle and method |
| CN203706252U (en) * | 2014-01-21 | 2014-07-09 | 珠海市迅时通信科技有限公司 | Light, electricity and voice combination linen counter |
| CN104635706A (en) * | 2015-02-05 | 2015-05-20 | 上海市城市建设设计研究总院 | Method and system for monitoring and early warning on cluster persons based on information source detection |
| CN104639241A (en) * | 2013-11-14 | 2015-05-20 | 瑞萨电子株式会社 | LED lamp, power-line network system and writing method for location information |
| CN204390374U (en) * | 2015-02-03 | 2015-06-10 | 南京邮电大学 | A kind of intelligent public transportation system based on visible light communication |
| CN204695422U (en) * | 2015-06-08 | 2015-10-07 | 苏州金螳螂展览设计工程有限公司 | A kind of public exhibition room flow of the people prior-warning device |
-
2015
- 2015-12-04 CN CN201510887346.2A patent/CN105513177A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120217397A1 (en) * | 2011-02-25 | 2012-08-30 | Noone David Robert | Low profile light collimator micro baffle and method |
| CN104639241A (en) * | 2013-11-14 | 2015-05-20 | 瑞萨电子株式会社 | LED lamp, power-line network system and writing method for location information |
| CN203706252U (en) * | 2014-01-21 | 2014-07-09 | 珠海市迅时通信科技有限公司 | Light, electricity and voice combination linen counter |
| CN204390374U (en) * | 2015-02-03 | 2015-06-10 | 南京邮电大学 | A kind of intelligent public transportation system based on visible light communication |
| CN104635706A (en) * | 2015-02-05 | 2015-05-20 | 上海市城市建设设计研究总院 | Method and system for monitoring and early warning on cluster persons based on information source detection |
| CN204695422U (en) * | 2015-06-08 | 2015-10-07 | 苏州金螳螂展览设计工程有限公司 | A kind of public exhibition room flow of the people prior-warning device |
Non-Patent Citations (1)
| Title |
|---|
| 胡国永，陈长缨，陈振强: "白光LED照明光源用作室内无线通信研究", 《光通信技术》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192981A (en) * | 2017-04-28 | 2017-09-22 | 天津大学 | Visible ray alignment system and method based on illumination shade and machine learning |
| CN107192981B (en) * | 2017-04-28 | 2020-02-21 | 天津大学 | Visible light positioning system and method based on illumination shadow and machine learning |
| CN107808485A (en) * | 2017-10-24 | 2018-03-16 | 上海第二工业大学 | A kind of method that burning things which may cause a fire disaster is detected using visible light communication |
| CN107808476A (en) * | 2017-10-24 | 2018-03-16 | 上海第二工业大学 | The visible ray fire defector network of safe escape path in a kind of prediction building |
| CN107808485B (en) * | 2017-10-24 | 2020-06-05 | 上海第二工业大学 | Method for detecting fire source by utilizing visible light communication |
| CN107808476B (en) * | 2017-10-24 | 2020-06-05 | 上海第二工业大学 | Visible light flame detection network for predicting safe escape path in building |
| CN108597228A (en) * | 2018-05-30 | 2018-09-28 | 中国科学技术大学 | Traffic flow intelligent perception system and method based on visible light perception |
| CN108597228B (en) * | 2018-05-30 | 2023-08-29 | 中国科学技术大学 | Intelligent traffic flow sensing system and method based on visible light sensing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105513177A (en) | LED visible light communication-based flow density statistics system and method | |
| CN204654547U (en) | Long-distance Control blind system | |
| CN111928174A (en) | Multifunctional modular intelligent lamp pole and implementation method thereof | |
| CN104853485A (en) | Intelligent road illumination and monitoring system based on ZigBee and 4G technology | |
| KR20160124504A (en) | A multi-functional street light system | |
| CN108105706B (en) | Solar aviation obstruction light | |
| WO2014111752A1 (en) | Smart photocell for the remote managment and control of public lighting systems | |
| CN106448009A (en) | Perimeter intrusion detection system and method | |
| CN203504812U (en) | LED lamp intelligent illumination system based on STC single-ship microcomputer | |
| CN205844840U (en) | A kind of freeway tunnel this locality control system | |
| CN208561349U (en) | A kind of full intelligent detection device of lift car | |
| CN103607528A (en) | Active infrared camera | |
| CN203951649U (en) | Corridor LED illumination and fire alarm monitoring system based on zigebee communication | |
| CN101861017A (en) | Region illumination maintenance system and method | |
| CN209015352U (en) | A kind of anti-fishing bayonet apparatus of transmission line of electricity | |
| CN203492225U (en) | Control system of illumination circuit | |
| CN214475430U (en) | Multi-strategy tunnel optical interception system | |
| CN202887283U (en) | Classroom people counting and detecting device based on human body infrared sensors | |
| CN209343526U (en) | A kind of walk signal lamp of intelligent control | |
| CN201690660U (en) | Area lighting detector | |
| CN206210032U (en) | A kind of perimeter intrusion detecting system | |
| CN213690860U (en) | Intelligent safety early warning transmitter, receiver and facility thereof | |
| CN106210658A (en) | A kind of monitoring system having lightning protection function concurrently | |
| CN203563133U (en) | Active infrared video camera | |
| CN207569567U (en) | A kind of Intelligent LED lamp tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160420 |