CN107507419A - A kind of magnitude of traffic flow detector based on WIFI signal - Google Patents
A kind of magnitude of traffic flow detector based on WIFI signal Download PDFInfo
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0116—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a kind of magnitude of traffic flow detector based on WIFI signal, including power supply module, signal to transmit/receive module and temporary storage module, wherein：The signal transmits/receives module and is divided into host module and extension set module；When the signal transmits/receives module as extension set module, based on sensor and base WIFI protocol listenings receive the broadcast data packet that mobile device is sent in surrounding environment, and the broadcast data packet is sent to data processing module and carries out deleting choosing and reading, and by including the data transfer that ID number and extension set module are numbered to host module；When the signal transmits/receives module as host module, for receiving the data of extension set module transmission and stamping timestamp；The temporary storage module, for the data after storage host resume module.The present invention has the advantages that easy for installation, cost is low, low in energy consumption, reliability is high, and the equipment such as gps signal generator is additionally installed without vehicle.
Description
Technical field
The invention belongs to vehicle Flow Detection in magnitude of traffic flow detection technique field, more particularly to the environment such as highway to set
It is standby.
Background technology
Traffic flow data is the important information source of traffic operation dispatching and command system, can be command scheduling, the magnitude of traffic flow
Control and traffic guidance provide decision-making foundation.Existing Traffic flow detecting technology has a variety of, can be divided into contact according to mounting means
Formula detection mode and non-contact detection mode.Wherein contact measurement technology includes piezoelectricity, pressure pipe detection and loop coil
Detection.The major defect of this technology is that vehicle causes the service life of detector shorter rolling for road, is detected laying
, it is necessary to suspend traffic, destroy road surface during device, therefore more difficult, use cost height is gone along with sb. to guard him in installation.Non-contact detection technology master
To be wave frequency detection and video detection.Wave frequency detection is divided into microwave, ultrasonic wave and infrared etc. three kinds.Non-contact detection device can lead to
Support installation is crossed, easy to maintenance, service life length, its major defect is easily to be influenceed by weather and outdoor conditions, environment be present and fits
The problems such as answering property is not strong, volume of transmitted data is big, Detection accuracy is not high and cost is higher.
With the rapid development of China's highway network, freeway traffic flow detection application demand increases severely.In highway network
In, traffic flow information is equally important, and by flow information, highway network administrative department can understand the reality in each section in real time
When vehicle fleet size information, there is provided intuitively road network vehicle load amount, accurate data is provided for the scheduling and integrated planning of road network.
But highway network has that some are special, such as highway power supply inconvenience, information transfer difficulty, with
And fail to lay all kinds of detectors etc. in advance in process of construction, concentrated type monitoring can not be accomplished and managed, it is necessary to existing detection
Device is further designed and improved.
The research of Traffic flow detecting technology has been carried out for many years, be concentrated mainly on urban transportation detection occasion, in recent years with
The rapid development of China's highway network, freeway traffic flow detection application demand increases severely.Examined according to mounting means traffic flow
Survey technology can be divided into contact measurement mode and non-contact detection mode.
The transport information detection technique of contact, its main representative are piezoelectricity, pressure pipe detection, loop line detection.
Shortcoming：Vehicle causes its service life shorter rolling for road, and installation is difficult in maintenance, must suspend traffic, destroy
Road surface, use cost are higher.
Contactless traffic information detection device is broadly divided into wave frequency detection and the major class of video detection two, and wave frequency detection includes
Microwave, ultrasonic wave and infrared three kinds, these detection means can be installed by support, easy to maintenance, long lifespan.But easily by outdoor gas
The influence of time condition, the problems such as environmental suitability is not strong, and Detection accuracy is not high be present.Same such device there is also equipment into
This is higher, and distribution is excessively concentrated, and because the actual factors such as highway energization difficulty influence, its main paving location is public at a high speed
Around the gateway of road, black spot, can not to highway system-wide section carry out effective detection.It is applied to highway network at present
Vehicle detection system be substantially using traditional urban traffic flow detection mode, do not take into full account that highway is powered
Inconvenience, information transfer is difficult, and the factor such as bad environments, causing these detecting systems to occur, reliability is not high, and engineer applied is not
The problems such as strong.
In recent years, with the research that deepens continuously to intelligent transportation system, many scholars, researcher propose new detection
Method, such as traffic detection system based on GPS navigation system, by installing d GPS locating module on motor vehicle, realize that GPS is defended
Star constantly detects.Based on GPS location, its position error is can be controlled in the range of more than ten to tens meters, while with GPS location system
System is continued to optimize, and its precision is improving constantly.This kind of method, theoretically there is very big feasibility.But this kind of method is present
D GPS locating module is attached on motor vehicle by some open defects, i.e. researcher, that is to say, that vehicle must be installed and used should
Module, there is necessarily mandatory, other people legitimate rights and interests may have been encroached on.And for now, its d GPS locating module peace
It is also of a relatively high to dress up this, even in developed country as the U.S., also only high-grade car can just possess the module.So
The monitoring method has certain operability difficult in sample rate and sample size.
The content of the invention
The problem of existing for prior art, the invention provides a kind of magnitude of traffic flow detector based on WIFI signal,
Have the advantages that easy for installation, cost is low, low in energy consumption, reliability is high, and such as gps signal hair is additionally installed without vehicle
The equipment such as raw device.
In order to solve the above technical problems, present invention employs following technical scheme：A kind of traffic flow based on WIFI signal
Amount detector, including power supply module, signal transmit/receive module and temporary storage module, wherein：The signal transmits/receives module and is divided into
Host module and extension set module, and it is built-in with radio frequency antenna module, clock timer and data processing module；
When the signal transmits/receives module as extension set module, based on sensor and based on 802.1b agreements (WIFI assist
View) it is used for the broadcast data packet that the mobile device based on WIFI signal agreement is sent in monitoring reception surrounding environment, and this is wide
Unicast packets are sent to data processing module, and the data processing module is carried out deleting choosing and read, moved to broadcast data packet
The ID number of dynamic equipment, and by including the data transfer that ID number and extension set module are numbered to host module；
When the signal transmits/receives module as host module, for receiving the data of extension set module transmission and stamping the time
Stamp；
The temporary storage module, for the data after storage host resume module；
The power supply module, transmit/receive module with signal and temporary storage module electrically connects.
Preferably, the power supply module is solar powered module.
Further, the signal transmits/receives the CC3XXX family chips that module uses TI.
Further, in addition to external power supply interface, USB data transmission interface, transmission line/intelligent acess mouth and shortwave
Signal transmission module
Beneficial effect：Compared with prior art, the present invention has advantages below：
1st, it is non-imposed, conservation of nature people legitimate rights and interests to greatest extent.Detected using the movable signal based on WiFi signal
Device module is only collected by the spontaneous wireless signal outwards transmitted of the mobile terminals such as mobile phone, handed over without Qiang ZhiyaoQiung as sensor
Logical participant installs all kinds of positioners or software.
2nd, inexpensive, the movable signal detector module based on WiFi signal is simple in construction, and equipment durability is strong, can be intensive
It is arranged in each express highway section.
3rd, low-power consumption, the detector in the process of running, the signal highway launched to surrounding only in 100mV or so, its
Consumption for the energy is considerably less, green.
4th, power supply is convenient, although heliotechnics is very ripe not yet at present, the power capacity based on the detector, often
The supporting high-performance solar electroplax of individual detector and high-capacity lithium battery, can support equipment operating power source demand, solve height
The problem of speed power supply is difficult.
5th, mathematical logic is simple, and stability is high：Being different from video flow detection device etc., other check equipment, and the detector is in work
Movable signal is only caught during work, and is included in the time for collecting signal and detector numbering.Complex data identification need not be carried out
It is higher with processing, operational reliability.
The present invention based on detect and receive vehicle driver or the band such as mobile phone/PAD WIFI module that passenger carries outwards from
The broadcast data packet of main transmission obtains the data messages such as road traffic, speed and car transit time so as to calculate.
Based on above-mentioned advantage, detecting system can obtain a large amount of by dense distribution in the detector of each express highway section
Data message, and matched by terminal system adaptive algorithm, realize to whole fastlink traffic monitoring.Pass through set of algorithms
Into, it is effective to the progress of each fastlink vehicular circulation situation to count and analyze, whole rapid transport information is grasped, to answer
Sufficient data supporting is provided to emergent traffic incident, traffic monitoring, the planning of following high-speed transit.
Brief description of the drawings
Fig. 1 is the functional block diagram of the traffic flow monitoring device of the present invention based on WIFI signal.
Fig. 2 is the deployment schematic diagram of the traffic flow monitoring device of the present invention based on WIFI signal.
Embodiment
Below in conjunction with the accompanying drawings and with specific embodiment, the present invention is furture elucidated.It should be understood that these embodiments are only used for
The bright present invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are to the present invention's
The modification of the various equivalent form of values falls within the application appended claims limited range.
As shown in figure 1, the present invention the magnitude of traffic flow detector based on WIFI signal be by along traffic route especially
Highway is disposed successively, and so as to form multiple sub-networks, each sub-network and actual section S are spatial match mapping relations,
And include multiple magnitude of traffic flow detectors.Magnitude of traffic flow detector is mainly integrated with three zones module：Power supply module, signal
Transmit/receive module and temporary storage module；And external numerous interfaces：External power supply interface, USB data transmission interface, transmission line/
Intelligent acess mouth and short-wave signal transport module.In the three zones module of magnitude of traffic flow detector：
The signal transmits/receives module and is divided into host module and extension set module, and a usual sub-network includes a main frame mould
Block and multiple extension set modules；The signal transmits/receives module and is built-in with radio frequency antenna module, clock timer and data processing mould
Block；
Sensor and 802.1b agreements are based on when the signal transmits/receives module as extension set module, based on it
(WIFI agreements) is used for the broadcast data packet that the mobile device based on WIFI signal agreement is sent in monitoring reception surrounding environment, and
The broadcast data packet is sent to data processing module, the data processing module is carried out deleting choosing and read to broadcast data packet,
The ID number of mobile device is obtained, and by including the data transfer that ID number and extension set module are numbered to host module；
When the signal transmits/receives module as host module, for receiving the data of extension set module transmission and stamping the time
Stamp；Every the set time or when storage element space is close to saturation, pass through wireless network (2G/3G/4G) or wire cable
Transmit to data server.
The power supply module using solar powered, including：Solar panel, charge controller, inverter, built-in storage
Battery and high-capacity lithium battery.Solar panel is responsible for receiving the solar energy from space, is transformed into electricity by broadcasting and TV effect
Can and it be stored in internal battery.Charge controller is used to control solar panel working condition, when battery stores full energy
Afterwards, accumulation of energy is stopped.To be further ensured that sensors work stability, prevent because powerup issue causes detector to be stopped
Problem, high-capacity lithium battery is added in power module, as stand-by power supply.When running into continuous rainy weather, cause solar energy
In electroplax during battery energy deficiency, powered by lithium battery for detector, lithium cell charging is also completed by solar energy electroplax.
The corn module of the magnitude of traffic flow detection of the present invention transmits/receives module for signal, and signal transmitting and receiving module is divided into master
Machine module and extension set functions of modules.Sensor based on extension set module, the collection of basic data is carried out, specific work process is such as
Under：
1st, using the WIFI agreements based on 802.1b；
2nd, sensor chip is that data processing module is in silent perception mode of operation, monitors and is based on from surrounding environment
The mobile device broadcast data packet of wifi signaling protocols；
3rd, the mobile terminal such as electronic equipment such as mobile phone, pad, in 802.1b agreements, it is desirable to which each AP is at regular intervals
(a few tens of milliseconds to several seconds) peripherad sta and AP broadcast beacon frames, broadcast beacon frames include mobile terminal phase
Basic information data is closed, such as signal level, device id, covers whole 2.4GHz frequency ranges；
4th, sensor chip fixed reception passage, by receiving from mobile terminal to surrounding broadcast beacon frames, it is put into slow
Deposit, carrying out the first run to signal deletes choosing, rejects the packet for not including equipment id information；
5th, digital independent is carried out to the packet of reservation, equipment ID number is read from packet；
6th, the id information obtained by data screening and extension set numbering are transmitted to being used as main frame by signal transmitting module
The magnitude of traffic flow detector of module.
Host module function carries out preliminary working to data, comprised the following steps that mainly as the terminal of data：
1st, host signal receiving module receives the id information and numbering letter transmitted by extension set to extension signal transmitting module
Breath；
2nd, host clock module is that the ID that each extension set uploads stamps timestamp, for distinguishing each ID uplink time；
The ID data for stamping timestamp are faced and deposited in the memory unit；
3rd, every the set time or when storage element space is close to saturation, by wireless network (2G/3G/4G) or have
Line cable transmission is to data server.
Temporary storage, under highway environment, the problem of existence information transmission always is difficult, traditional video stream data
Because caused data volume is more huge in its unit interval, it can not effectively be transmitted, pass through the movement based on WiFi signal
The information that signal detector is recorded only includes the information such as detector numbering, detection time, mobile phone logo, single information content
It is small, it less temporary storage can be used to be stored.Data validity and real-time are considered simultaneously, can be adjusted as needed
Face and deposit the frequency that middle data are sent into networking substation, and after packet has been sent every time, empty memory.Pass through the present invention
The magnitude of traffic flow detector collection road vehicle traffic data, there is advantages below：
1. save system installation cost：Each detector production cost is relatively low, and installation process is convenient；
2. energy-conserving and environment-protective, detector uses solar powered mode, and itself work can consume it is low；
3. manufacturing technique requirent is relatively low：The detector has a style of one's own from energy supply to signal acquisition to storage, and each several part work
Skill all relative maturities；
4. installation cost is low：The detector is mountable to any side in expressway, and small volume does not hinder pilot's line of vision,
Driver is not attracted to pay attention to.And the installation need not set up large-scale extra door frame etc. and be supported as equipment, therefore overall peace
Dress process does not hinder the normal operation of high-speed transit；
5. data transportation requirements are low：The equipment main information transmission means uses radio communication, and optical cable is laid without extra.
The equipment single data volume after optimization is smaller, and transmission is convenient, is not take up ample resources.
6. applied widely, mass data source inlet：Cheap lower deployment cost and strong adaptive capacity to environment make it that it can be with
It is widely deployed in various traffic environments such as high speed ring road gateway, high speed backbone road, even service area gateway, urban road ring
In border.The mass data of equipment collection, can be traffic analysis, traffic programme, and traffic operation and management provides strong
Data supporting.
Claims (5)
- A kind of 1. magnitude of traffic flow detector based on WIFI signal, it is characterised in that：Module is transmitted/received including power supply module, signal And temporary storage module, wherein：The signal transmits/receives module and is divided into host module and extension set module, and is built-in with radio-frequency antenna Module, clock timer and data processing module；When the signal transmits/receives module as extension set module, based on sensor and monitoring reception is used for based on WIFI agreements The broadcast data packet that the mobile device based on WIFI signal agreement is sent in surrounding environment, and the broadcast data packet is sent to number According to processing module, the data processing module is carried out deleting choosing and read to broadcast data packet, obtains the ID number of mobile device, and will Including the data transfer that ID number and extension set module are numbered to host module；When the signal transmits/receives module as host module, for receiving the data of extension set module transmission and stamping timestamp；The temporary storage module, for the data after storage host resume module；The power supply module, transmit/receive module with signal and temporary storage module electrically connects.
- 2. the magnitude of traffic flow detector based on WIFI signal according to claim 1, it is characterised in that：The power supply module is Solar powered module.
- 3. the magnitude of traffic flow detector based on WIFI signal according to claim 1, it is characterised in that：The signal transmits/receives Module uses TI CC3XXX family chips.
- 4. the magnitude of traffic flow detector based on WIFI signal according to claim 1, it is characterised in that：Also include external confession Electrical interface, USB data transmission interface, transmission line/intelligent acess mouth and short-wave signal transport module.
- 5. the magnitude of traffic flow detector based on WIFI signal according to claim 2, it is characterised in that：It is described solar powered Module includes solar panel, charge controller, inverter, internal battery and external high-capacity lithium battery.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610673262.3A CN106097731A (en) | 2016-08-16 | 2016-08-16 | Traffic flow detector based on WIFI signal and detecting system |
| CN2016106732623 | 2016-08-16 |
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| CN201610673262.3A Pending CN106097731A (en) | 2016-08-16 | 2016-08-16 | Traffic flow detector based on WIFI signal and detecting system |
| CN201710689272.0A Pending CN107507419A (en) | 2016-08-16 | 2017-08-14 | A kind of magnitude of traffic flow detector based on WIFI signal |
| CN201710689311.7A Pending CN107527504A (en) | 2016-08-16 | 2017-08-14 | A kind of traffic flow detection system based on WIFI signal |
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| CN108682151B (en) * | 2018-05-30 | 2020-11-17 | 广东矩阵流大数据科技有限公司 | Mobile traffic flow statistical device and method based on wireless signal scanning technology |
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| CN110232817A (en) * | 2018-12-27 | 2019-09-13 | 上海君来软件有限公司 | A kind of Freeway Conditions analysis method based on WiFi sniff data |
| CN109615866A (en) * | 2019-01-16 | 2019-04-12 | 南京奥杰智能科技有限公司 | Traffic monitoring system Internet-based |
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| CN107527504A (en) | 2017-12-29 |
| CN106097731A (en) | 2016-11-09 |
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