CN207282015U - A kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection - Google Patents
A kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection Download PDFInfo
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- CN207282015U CN207282015U CN201721125711.7U CN201721125711U CN207282015U CN 207282015 U CN207282015 U CN 207282015U CN 201721125711 U CN201721125711 U CN 201721125711U CN 207282015 U CN207282015 U CN 207282015U
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Abstract
The utility model discloses a kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection, it is related to a kind of technical field of intelligent traffic.Display module, alarm module and time delay module are counted including traffic lamp module, flow of the people and motor vehicle detecting module, flow of the people, this system is using infrared sensor as core, base control device using STC89C52 single chip as system, the flow of the people data that the infrared sensor set by crossing both sides monitors automatically control traffic lights properly to show that duration changes, and in left turn lane set infrared sensor by having detected whether motor vehicles alarm to remind pedestrian to take care.A kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection disclosed in the utility model, efficiently solve traffic crowd congestion especially intersection block, the traffic problems of pedestrian and collision of motor-driven vehicles, have a good application prospect and meaning.
Description
Technical field
Technical field of intelligent traffic is the utility model is related to, more specifically to a kind of intelligence based on Pedestrian flow detection
Can traffic light control system.
Background technology
Intelligent Control System for Traffic Lights combines traffic technique with Internet of Things, is a kind of based on Real-time Traffic Information
Dynamic traffic control system, makes system more reasonably distribute traffic lights lighting time by smart machine, and is different from traditional
Traffic lights manipulates the duration using fixed periodic sequence.The advantage automatically controlled that intelligent traffic light control has, can be more
Effectively alleviate the traffic crowd congestion especially various traffic problems such as intersection blocking.
City road crossing pedestrian congestion and safety guarantee problem are more severe, with the increase of traffic flow of the people,
Crowd's quantity in intersection is waited to steeply rise.At present mainly using fixed cycles traffic lights come guided crossover mouth people
Group, effectively can not adjust green light periodic sequence duration in real time according to actual traffic flow of the people；Current crossroad pair
When current crossing shows green light, the motor vehicle of left turn lane displays that green light by the way that this will result in pedestrian and left-hand rotation machine
The problem of motor-car collides, causes the frequent generation of crossing accident.
The monitoring camera that the Pedestrian flow detection module used at present uses sends the video of acquisition to digital picture
Device is managed, shows flow of the people by image procossing, system structure is complicated, of high cost, it is impossible to effectively play based on Pedestrian flow detection
The advantage of intelligent traffic light.
Therefore, in view of the deficiencies of the prior art, the utility model is proposed with realizing that the intelligence of intersection traffic turns to target
A kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection.
The content of the invention
The utility model proposes a kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection, using infrared sensor as
Core, the base control device using STC89C52 single chip as system, the infrared sensor set by crossing both sides are supervised
The flow of the people data controlled automatically control traffic lights with properly show duration change, left turn lane set infrared sensor lead to
Cross and detected whether motor vehicles alarm to remind pedestrian to take care.
To achieve the above object, technical solution provided by the utility model is：A kind of intelligence based on Pedestrian flow detection is handed over
Logical lamp control system, including traffic lamp module, flow of the people and motor vehicle detecting module, flow of the people count display module, alarm mould
Block and time delay module；The traffic light signal circuit module includes STC89C52 single chip control module and red greenish-yellow 3 led
Lamp, the flow of the people and motor vehicle detecting module include correlation type Photoelectric infrared switch module and STC89C52 single chip processing mould
Block, the flow of the people, which counts display module, includes four Bits Serials, 595 charactron and STC89C52 single chip module, the alarm electricity
Road module includes Photoelectric infrared switch, active buzzer module and STC89C52 single chip chip, and the time delay module prolongs
Shi Chengxu uses software delay, and delay duration is determined by the instruction cycle of microcontroller；Traffic lights and charactron are shown
Show that module is built up in pavement side, opposite with Photoelectric infrared switch, the Photoelectric infrared switch of motor vehicle detecting module is arranged on
The left turn lane adjacent with pavement, Pedestrian flow detection module are arranged on the both sides of pavement starting point, and alarm module is with turning left
Track motor vehicle detecting module is connected.
The traffic lamp module and Pedestrian flow detection module, green light show duration can adjust automatically, by people's row
Cross junction sets Photoelectric infrared switch to detect pedestrian, is changed according to how much intelligence of pedestrian's number, when crowd's load increases,
Green light sequence duration duration suitably increases, and improves intersection pedestrian's dispatching.
The motor vehicle detecting module and alarm module, are by installing Photoelectric infrared switch detection in left turn lane both sides
No to have motor vehicle, when there is barrier, system, which is given, warns, and to remind pedestrian to pay attention to dodging, prevents the hair of Traffic Collision event
It is raw, it is ensured that the lives and properties of pedestrian are not suffered a loss.
The flow of the people counts display module, and facility is provided for some relevant departments for needing to count flow of the people, while
It is known that approximate range of the present road by pedestrian, help is provided for others research.
The Photoelectric infrared switch uses correlation type, and the reception device and emitter of correlation type judge positioned at one
Testee is whether there is by detecting tested coincidence optical axis between reception device and emitter either with or without being interdicted to complete.
The high sensitivity of correlation type optoelectronic switch sensor, its detecting distance is relatively far away from.
The Photoelectric infrared switch of the detection flow of the people uses three line PNP open types of direct current, and detect motor vehicle is straight
Flow three line NPN open types.
The traffic lights module of one system is similar to a miniature computer system, intelligent traffic light control system
System is by traffic lamp module, one-chip computer module, Pedestrian flow detection module, numeral method flow of the people unit, alarm module and delay
Module composition, each section are all controlled by an independent subprogram.
The flow of the people and the embedded program of motor vehicle detecting module use interrupt techniques, receive computer and interrupt
Temporarily ceased after request and perform original program, jump to the initial position response interrupt routine for interrupting source program.
The delay procedure uses software delay, and delay duration is determined by the instruction cycle of microcontroller.
Instruction cycle represents that central processing unit realizes whole durations that a complete independent implementation procedure must be used.One machine week
The time of phase is calculated by the working frequency 11.0592Hz of microcontroller STC89C52 single chip, microcontroller work
Frequency for the machine cycle 1/12, i.e., 12 ×（1/11.0592Hz）≈1.085us.
Described program carries out embedded program design with C language and using Keil softwares, and replication tool uses STC-
ISP, STC-ISP are a kind of download program software for aiming at the research and development of STC series monolithics and creating, by STC by embedded program
Download on microcontroller.
Using technical solution provided by the utility model, compared with existing known technology, have the advantages that：
（1）Intelligent Control System for Traffic Lights based on Pedestrian flow detection, using infrared sensor detection flow of the people and motor vehicle and use
Video transmission system detection is compared, simple with system structure, the low advantage of cost.
（2）Intelligent Control System for Traffic Lights based on Pedestrian flow detection, can adjust in real time according to actual traffic flow of the people
Whole green light periodic sequence duration, effectively alleviates the traffic problems that traffic crowd congestion especially intersection blocks.
（3）Intelligent Control System for Traffic Lights based on Pedestrian flow detection, sets infrared sensor to pass through inspection in left turn lane
Whether survey has motor vehicles alarm, to remind pedestrian to pay attention to dodging, prevents the generation of Traffic Collision event.
（4）Intelligent Control System for Traffic Lights based on Pedestrian flow detection, there is flow of the people to count display module, be needed for some
The relevant departments for counting flow of the people provide facility, while it will also be appreciated that present road is it by the approximate range of pedestrian
His research provides help.
Brief description of the drawings
The general frame of Fig. 1 systems.
Fig. 2 system overall circuit figures.
Fig. 3 traffic signals programming flowcharts.
1 design flow diagram of Fig. 4 interrupt routines.
2 design flow diagram of Fig. 5 interrupt routines.
Fig. 6 time delay subroutine design flow diagrams.
Embodiment
Specific embodiment of the utility model is described below in conjunction with the accompanying drawings, so that the advantages of the utility model and spy
Sign can be easier to be readily appreciated by one skilled in the art, so as to make apparent clear and definite boundary to the scope of protection of the utility model
It is fixed.Requiring particular attention is that in the following description, when perhaps the detailed description of known function and design can desalinate this
During the main contents of utility model, these descriptions will be ignored herein.
A kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection, including traffic lamp module, flow of the people and motor vehicle
Detection module, flow of the people count display module, alarm module and time delay module；The traffic light signal circuit module includes
It is red that STC89C52 single chip control module and red greenish-yellow 3 LED lamps, the flow of the people and motor vehicle detecting module include correlation type
Outer optoelectronic switch module and STC89C52 single chip processing module, the flow of the people, which counts display module, includes four Bits Serials 595
Charactron and STC89C52 single chip module, the warning circuit module include Photoelectric infrared switch, active buzzer module with
And STC89C52 single chip chip, the delay procedure of the time delay module use software delay, delay duration passes through micro-control
The instruction cycle of device processed determines；Traffic lights and digital tube display module are built up in pavement side, with Photoelectric infrared switch phase
Right, the Photoelectric infrared switch of motor vehicle detecting module is arranged on the left turn lane adjacent with pavement, and Pedestrian flow detection module is set
Put and be connected in the both sides of pavement starting point, alarm module with left turn lane motor vehicle detecting module.
This traffic light systems carries out external detection with infrared sensor technology, and STC89C52 single chip is internal control base
Plinth, display module and warning circuit are counted by traffic signals circuit, Pedestrian flow detection circuit, motor vehicle detecting circuit, flow of the people
Form.The general frame of system is as shown in Figure 1.
（1）Equivalent to one medium of microcontroller, completes the communication between detection circuit and functional circuit, Pedestrian flow detection electricity
Road and motor vehicle detecting circuit detect obstacle information by infrared switch, and obstacle information is converted into level signal and is passed through
Microcontroller input/output end port sends interruption application.
（2）Control traffic lights to change by internal algorithm when microcontroller receives application signal, realize charactron flow of the people
Counting and warning function.
（3）Traffic lights suitably will adjust periodic sequence duration based on flow of the people information, and meet traffic light cycles change
Change standard.
（4）Charactron chooses dynamic driving, and each charactron is made successively by the timesharing driving of the common port of each charactron
Shown.Because the twilight sunset phenomenon and human body eyesight image temporal persistence effect of led units in the driving shown successively, often
A charactron does not have same step up switch, because the speed of scanning is rapid enough it is that one group of static state is shown to be looked in human eye
As a result, DC driven display effect is compared, the result of dynamic driving is identical will not to there are phosphere and its only needs
A small amount of input/output end port is used, can effectively reduce loss.
（5）Alarm module should can reflect motor vehicle detecting result but also realize alarm function, when detecting clear
It is absolutely quiet, alarm immediately when veil has been detected.
The utility model carries out the design of hardware circuit according to overall plan, is to realize traffic signal lamp system performance
Overall circuit figure of uniting is as shown in Fig. 2, by traffic signals circuit 1, flow of the people counts display module 2, Pedestrian flow detection circuit 3, machine
Motor-car detection circuit 4 and warning circuit 5 are formed.
The traffic signals circuit, using red greenish-yellow 3 LED lamps, wherein P0^0 is the passing when light turning red indicator light at crossing,
P0^1 is the amber light traffic pilot lamp at crossing, and P0^2 is the green light traffic pilot lamp at crossing.In general, LED lamp need 5mA-
The input/output end port of microcontroller is connected to after the operating current of 10mA and the resistance that is connected, it is therefore an objective to by limiting led
The operating current of lamp and then the maximum port current of limitation simultaneously reduce power consumption.Three LED lamps use commoncathode, i.e. each lamp
Cathode the P0 mouths of microcontroller are connect by the resistance of a 1k or so, and the anode of three lamps is grounded again after being connected to together, as long as
Corresponding port output high level is controlled to light light in a program.
The Pedestrian flow detection circuit sensor module is infrared by being arranged on correlation type in crossing both sides
Optoelectronic switch composition, wherein, infrared electro opens the light using three line PNP open types of direct current, will be sent out according to the wiring requirement opened the light
The brown line for penetrating end connects VCC, blue line ground connection；Receiving terminal brown lead is connected with power end VCC, the GND of blue lead and microcontroller
It is connected, yellow lead wire is output line, and signal output is cathode, the P3^2 ports phase of yellow signal output line and microcontroller
Even, the other end is grounded after first connecting the resistance of a 1K.Peacetime state（When i.e. nobody passes through）Indicator light is OFF state, obstacle
Indicator light is lighted when thing passes through Photoelectric infrared switch.
When Photoelectric infrared switch has detected that barrier passes through, signal wire just send one by the P3^2 oral instructions of microcontroller
Low level, then microcontroller handles this signal by external interrupt program makes number add 1 certainly.Pedestrian flow detection circuit can lead to
The change of how much further control traffic lights of detection flow of the people crossed.And Pedestrian flow detection circuit can detect number, give
Relevant department provides the approximate range of a flow of the people, and in some large-scale clubs, scenic spot, the crossing before market installs this electricity
Road can effective statistical number of person, make strong help for their work.
The flow of the people counts display circuit by four Bits Serials, 595 charactron and singlechip group into selecting common cathode number of poles
Code pipe, the DIO pins of charactron meet the P1^0 of microcontroller, and RCK pins meet P1^1, and SCK pins meet P1^2.By to microcontroller this
Three I/O mouthfuls of programming can control numeral method to go out the flow of the people detected by Photoelectric infrared switch.
The warning circuit is by the Photoelectric infrared switch installed in left turn lane, active buzzer module and microcontroller
Chip forms.Wherein, active buzzer module is directly connected with the P0^3 mouths of microcontroller, and dependent instruction instruction is sent by microcontroller
Its ring；Infrared photoelectric sensor switch uses three line NPN open types of direct current, and transmitting terminal red lead wire connects VCC, black lead
Ground connection；Its receiving terminal red lead wire is connected with VCC, and black lead wire connects with ground, and yellow lead wire is output line,
Signal output is anode, and yellow signal lead wire is communicated with the P3^3 ports of microcontroller, and the other end first connects the resistance of a 1K
It is connected afterwards with positive pole.Lamp goes out when having shelter, and then lamp is bright during have no occluder.When the Photoelectric infrared switch of left turn lane detects
To have motor vehicle by when, send a low level by P3^3 oral instructions of the signal wire to microcontroller, microcontroller is by interrupting journey
Sequence control active buzzer module makes it make a sound alarm, so the pedestrian that currently jaywalks of prompting have motor vehicle by,
Pay attention to avoiding.
The traffic lights programming, each traffic lights, its minus earth, anode passes through a small resistance value of connecting
Resistance be connected with the control port of microcontroller, it is a high level that corresponding I/O port is then controlled in microcontroller
When LED operation, when input/output is low level, LED lamp stop working state.Its working method is：Initially give
The green LED lamp of reddish yellow assigns initial value, lights green light, during this period, while passes through crossing by population flow detection device detection
Pedestrian's quantity, when number is more than 5, the increase of another green light lighting time.Subsequent amber light flicker, secondly red light shows the lamp of 5s
Light, after red light countdown, display people numerical value, which resets, is changed into 0.Since then, whole traffic lights circulation terminates, and entrance is next
Traffic lights circulate.Traffic signals programming flowchart is as shown in Figure 3.
The design of the interrupt routine, using two external interrupts, interrupts 1 and detects the stream of people by Photoelectric infrared switch
Amount, the reception signal wire of Photoelectric infrared switch are connected with the P3^2 mouths of microcontroller, application interruption 1 when receiving a low level,
Interruption 2 is opened the light by infrared electro detects whether left turn lane has car, and the reception signal wire of Photoelectric infrared switch connects microcontroller
P3^3 mouthfuls, 2 are interrupted when yellow signal line provides a low level signal and is triggered.Program flow diagram is as shown in Figure 4,5.
Described time delay subroutine design, in order to achieve the purpose that delay will by consume the time of central processing unit come
Realize, its concrete operation step is to set the nesting that two for are circulated first, and central processing unit after calling subfunction by holding
Row for is circulated, and only judges loop body without performing other function statement among each for circulations.Thus by setting two
The nesting of a circulation completes software delay.Time delay subroutine design flow diagram is as shown in Figure 6.
The software environment that the system is realized uses Keil software programmings, and the detailed process programmed using Keil is as follows：
（1）The file of engineering is preserved as needed and assigns name for the project to be created, and the design is named as hpng, is clicked on after terminating
Preserve.
（2）Click on preserve after need select microcontroller model AT89C52. engineering has built up success at this time.
（3）Program：" File New ... " is chosen to select new establishment of item menu on the right of compiling manager, it is defeated herein
Enter project Window and carry out writing for source program.
（4）After program writes, click on " File Save ", the file for establishment assign a filename and store,
The extension title suffix of add items is needed during establishment, the suffix of usual c programming language is entitled " .C ", is herein written as suffix name
Hpng.c, storage can just shut this project after terminating.
（5）C language file is added to after engineering and clicks on "+" number, opens source file.
（6）So far, the foundation of whole engineering has been completed, but microcontroller can only distinguish that file format is HEX
Or BIN forms, it is impossible to identify c program, need right click to choose " create hex file " at this time.It is compiled and just can again
" .HEX " file is generated in file.
The replication tool uses STC-ISP download program softwares, its operation comprises the following steps that：（1）Open soft
Part, selects to want the microcontroller type of burning, the STC89C52RC used such as the design in " microcontroller model " this row.
（2）The corresponding port to be connected is clicked in " serial port " according to your 9 pin data cables, baud rate selection is
115200。
（3）Ensure that singlechip chip is accurately connected with computer, " opening program file " in figure is selected, then in text
Part underedge finds the HEX files for needing to be downloaded.
（4）Select " download/programming ", press Power-on-reset with hand just can be written to core by executable file HEX
In piece, after the completion of waiting burning program, then open microcontroller power supply switch and just can show that program operation result.
Treat that all design on hardware and software are completed, the base control device using STC89C52 single chip as system, according to
It is required that connection circuit, places each module in place, traffic lights and digital tube display module are built up in pavement side, with
Photoelectric infrared switch is opposite, and the Photoelectric infrared switch of motor vehicle detecting module is arranged on the left turn lane adjacent with pavement, people
Flow detection module is arranged on the both sides of pavement starting point, and alarm module is connected with left turn lane motor vehicle detecting module.
Claims (3)
1. a kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection, including traffic lamp module, flow of the people and motor-driven car test
Survey module, flow of the people counts display module, alarm module and green light time delay module；It is mono- that the traffic lamp module includes STC89C52
Piece machine control module and red greenish-yellow 3 LED lamps, the flow of the people and motor vehicle detecting module include correlation type Photoelectric infrared switch
Module and STC89C52 single chip control module, the flow of the people, which counts display module, includes correlation type Photoelectric infrared switch mould
Block, four Bits Serials, 595 charactron and STC89C52 single chip control module, the alarm module are established by cable including correlation type infrared light
Module, active buzzer module and STC89C52 single chip control module are closed, is connected with flow of the people and motor vehicle detecting module,
The delay procedure of the green light time delay module uses software delay, and delay duration is by the instruction cycle of microcontroller come really
It is fixed；Using infrared sensor as core, the base control device using STC89C52 single chip as system, is set by crossing both sides
The flow of the people data that the infrared sensor put monitors automatically control traffic lights with properly show duration change, in left turn lane
Infrared sensor is set by having detected whether motor vehicles alarm to remind pedestrian to take care.
A kind of 2. intelligent Control System for Traffic Lights based on Pedestrian flow detection according to claim 1, it is characterised in that：Institute
It is mono- by correlation type Photoelectric infrared switch module, four Bits Serials, 595 charactron and STC89C52 that the flow of the people stated counts display module
Piece machine control module forms.
A kind of 3. intelligent Control System for Traffic Lights based on Pedestrian flow detection according to claim 1, it is characterised in that：Institute
The intelligent Control System for Traffic Lights stated has green light time delay module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721125711.7U CN207282015U (en) | 2017-09-04 | 2017-09-04 | A kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection |
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| CN201721125711.7U CN207282015U (en) | 2017-09-04 | 2017-09-04 | A kind of intelligent Control System for Traffic Lights based on Pedestrian flow detection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671285A (en) * | 2018-12-27 | 2019-04-23 | 江苏博尧软件技术有限公司 | A kind of intelligent traffic light system for capableing of intelligent signal switching |
| CN111867207A (en) * | 2020-06-19 | 2020-10-30 | 国网北京市电力公司 | Park intelligent illumination time delay automatic adjustment method and device |
-
2017
- 2017-09-04 CN CN201721125711.7U patent/CN207282015U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671285A (en) * | 2018-12-27 | 2019-04-23 | 江苏博尧软件技术有限公司 | A kind of intelligent traffic light system for capableing of intelligent signal switching |
| CN111867207A (en) * | 2020-06-19 | 2020-10-30 | 国网北京市电力公司 | Park intelligent illumination time delay automatic adjustment method and device |
| CN111867207B (en) * | 2020-06-19 | 2022-09-27 | 国网北京市电力公司 | Park intelligent illumination time delay automatic adjustment method and device |
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Granted publication date: 20180427 Termination date: 20180904 |