CN201788586U - Mobile traffic information survey meter - Google Patents

The utility model discloses a mobile traffic information survey meter, which comprises a microwave traffic detector, a communication conversion module, a communication interface module and a power supply module, wherein the communication conversion module is respectively connected with the microwave traffic detector and the communication interface module, receives traffic information which is collected by the microwave traffic detector, and sends the information to the communication interface module to be output after data conversion. The power supply module comprises a solar panel and an accumulator, wherein the accumulator is respectively connected with the solar panel, the microwave traffic detector, the communication conversion module and the communication interface module, and receives and stores electric energy which is obtained by the solar panel, and respectively outputs the electric energy to the microwave traffic detector, the communication conversion module and the communication interface module. The embodiment of the utility model can not only scientifically and accurately obtain various traffic information, but also simplify mounting process, reduce the cost of mounting and operating, and prevents the defects caused by being connected with commercial power.

Movable traffic information investigating instrument

Technical field

The utility model relates to intelligent transportation field, relates in particular to a kind of movable traffic information investigating instrument.

Background technology

Along with China's rapid economic development, the owning amount of motor vehicle sharply rises, and road traffic pressure is increasing, and therefore alleviating traffic pressure becomes problem demanding prompt solution.Measures such as newly-built road, road widening, road traffic prompting all are the effective ways of alleviating traffic pressure.For these measures of alleviating traffic pressures, obtaining transport information such as road traffic flow exactly is to implement the important prerequisite of these measures.

At present, the existing method of obtaining transport information such as road traffic flow, flow velocity, occupancy roughly can be divided into two kinds: the one, to add up by the manual research mode, and so-called manual research mode is meant by the round-the-clock transport information that statistics will be investigated on road to be measured of great amount of manpower; The 2nd, detect by the device systems that detects traffic flow data, the existing device systems that detects traffic flow data is the needs that satisfy running by civil power mostly, therefore needs the electric weight transmission equipment to be installed so that civil power is incorporated in the checkout equipment.

In the technique scheme, there are the following problems at least:

The first, add up by the manual research mode and need expend a large amount of manpower and financial resources, and be difficult to guarantee the science and the accuracy of statistics; For example; Investigator's sense of responsibility of transport information is relatively poor or observation ability is not strong if be in charge of the investigation, and when the magnitude of traffic flow was big, the investigator failed the accurate recording magnitude of traffic flow, will cause statistics and actual conditions not to be inconsistent so;

The second, because the existing equipment that detects traffic flow data need consume city's electric operation,, improved operation cost again so both increased the burden of urban distribution network; In order to connect civil power some power equipments need be installed, therefore not only improve manufacturing cost, and be not easy to install.

Summary of the invention

The purpose of this utility model provides a kind of movable traffic information investigating instrument, not only can science obtain various transport information exactly, and can simplify installation process, reduce installation with operation cost, avoid being connected the drawback of civil power.

A kind of movable traffic information investigating instrument comprises: microwave traffic detecting device, communication modular converter, communication interface module and power module;

Described communication modular converter joins with microwave traffic detecting device and communication interface module respectively, and receives the transport information that microwave traffic detecting device is gathered, and after data-switching, is sent to communication interface module output;

Described power module comprises solar panel and accumulator, described accumulator is connected with communication interface module with solar panel, microwave traffic detecting device, communication modular converter respectively, and receive the storage electric energy that solar panel obtained, export to microwave traffic detecting device, communication modular converter and communication interface module respectively.

Preferably, described microwave traffic detecting device comprises two emissions radars and receiving radars, and described two emission radars and receiving radar are arranged at the inside of microwave traffic detecting device.

Preferably, described two emission radar per seconds are launched radar wave 1,000,000 times.

Preferably, it is characterized in that described communication modular converter comprises single-chip microcomputer, in order to receiving the transport information that microwave traffic detecting device is gathered, and after described transport information is converted to the transmission signals that communication interface module supports, send to communication interface module.

Preferably, described communication interface module comprises wired communication interface and wireless communication interface.

Preferably, described wire communication interface comprises serial ports, parallel port, Ethernet interface and/or general-purpose serial bus USB interface.

Preferably, described wireless communication interface comprises microwave transmission interface, blue tooth interface, infrared interface and/or radio network interface.

Preferably, the sensing range of described microwave traffic detecting device is between 1.8 meters to 76.2 meters, and the blind area is 1.8 meters, and the wave beam firing angle is 65 °.

Preferably, described communication interface module links to each other with the data handling machine of this movable traffic information investigating instrument outside, and the data after the conversion of communication modular converter are sent to described data handling machine.

The technical scheme that provides by above-mentioned the utility model as can be seen, the movable traffic information investigating instrument that the utility model embodiment provides has been used microwave traffic detecting device, so can science obtain various transport information exactly; Again because this movable traffic information investigating instrument is converted to electric energy by solar panel with sun power and powers, therefore simplified installation process, reduced installation and operation cost, avoided being connected the drawback of civil power.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.

The structural representation of the movable traffic information investigating instrument that Fig. 1 provides for the utility model embodiment.

The detection and the mounting means synoptic diagram of the movable traffic information investigating instrument that Fig. 2 provides for the utility model embodiment;

The front-end processing schematic flow sheet of the movable traffic information investigating instrument that Fig. 3 provides for the utility model embodiment;

The back-end processing schematic flow sheet of the movable traffic information investigating instrument that Fig. 4 provides for the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on embodiment of the present utility model, those of ordinary skills belong to protection domain of the present utility model not making the every other embodiment that is obtained under the creative work prerequisite.

Embodiment one

As shown in Figure 1, a kind of movable traffic information investigating instrument, its concrete structure can comprise microwave traffic detecting device, communication modular converter, communication interface module and power module;

Described communication modular converter joins with microwave traffic detecting device and communication interface module respectively, and receives the transport information that microwave traffic detecting device is gathered, and after data-switching, is sent to communication interface module output; Described communication interface module links to each other with the data handling machine of this movable traffic information investigating instrument outside, and the data after the conversion of communication modular converter are sent to described data handling machine.

Described power module comprises solar panel and accumulator, described accumulator is connected with communication interface module with solar panel, microwave traffic detecting device, communication modular converter respectively, and receive the storage electric energy that solar panel obtained, export to microwave traffic detecting device, communication modular converter and communication interface module respectively.

Below this specifying information and purposes of forming each parts is made a detailed description:

(1) microwave traffic detecting device: the inside of microwaves corresponding traffic detecting device is provided with emission radar and receiving radar that two per seconds can be launched 1,000,000 radar waves;

This microwave traffic detecting device can detect two surveyed areas of projection on the road surface, all can return a microwave signal through the vehicle in the surveyed area, just can obtain corresponding transport information (for example, corresponding transport information can comprise: the somatotype counting of vehicle flowrate, average velocity, dissimilar vehicles, lane occupancy ratio, time headway, spaces of vehicles, the information such as acquisition time that are accurate to second) by these microwave signals being carried out data processing;

The sensing range of this microwave traffic detecting device is between 1.8 meters to 76.2 meters, and the wave beam firing angle is 65 °, so it can detect the transport information in two-way maximum 10 tracks; Again because the blind area of this microwave traffic detecting device is 1.8 meters,, detect the interior transport information of maximum 76 meters scopes so only need 1.8 meters amount of side-shift just can avoid the influence of blind area.

(2) communication modular converter: corresponding communication modular converter can comprise single-chip microcomputer, in order to receive the transport information that microwave traffic detecting device is gathered, and after described transport information is converted to the transmission signals that communication interface module supports, send to communication interface module.

(3) communication interface module: corresponding communication interface module can comprise wired communication interface and wireless communication interface;

Corresponding wire communication interface can comprise that (English full name: Universal Serial BUS is translated into: USB (universal serial bus)) interface for serial ports (described serial ports can comprise that transfer rate is the RS-485 serial line interface of 9600-921.6kps and/or the RS-232 serial line interface that transfer rate is 9600-57.6kps), parallel port, Ethernet interface (described Ethernet interface can comprise the RJ-45 Ethernet interface) and/or USB;

Corresponding wireless communication interface can comprise that (described radio network interface can comprise GPRS (English full name: General Packet Radio Service for microwave transmission interface, blue tooth interface, infrared interface and/or radio network interface, be translated into: the general packet radio service technology) (the English full name of CDMA is Code-Division Multiple Access, is translated into CDMA for interface and/or CDMA 1X; CDMA 1X is meant the phase one of CDMA2000) interface);

Data after corresponding communication interface module is changed the communication modular converter are sent to described data handling machine, data after the corresponding conversion can save as text, then, corresponding data handling machine can be by reading the data in the text, draw out the vehicle flowrate curve, also can carry out the inquiry of time segment.

(4) power module: corresponding power module can comprise solar panel and accumulator, and solar panel can be an electric energy with the conversion of solar energy of clean environment firendly, and is stored in the accumulator, uses at any time for other modules of this investigating instrument; This accumulator is efficient accumulator, under fine state, can under cloudy state, also can provide 48 hours electric power support for a long time for other modules provide the electric power support.This investigating instrument has adopted solar powered mode, has not only avoided using drawback, the energy clean environment firendly of civil power, and obtain the equipment of sun power easy for installation, be easy to dismounting.

Particularly, be example with a track below, in conjunction with respective drawings, the overall workflow of detailed description:

As shown in Figure 3, the front-end processing flow process (so-called front-end processing flow process is meant the flow process of obtaining transport information) of the movable traffic information investigating instrument that provided of the utility model embodiment is as follows:

Step S1: beginning;

Step S2: initialization correlation parameter, for example each register of initialization, buffer zone etc.;

Step S3: detect and judged whether that car sails detection zone into, whether change, sail into if there is the variation of appropriateness then to be judged to be car by the distance that compares each track; If there is car to sail into, execution in step S4 then, otherwise, execution in step S6 then;

Step S4: pick up counting;

Step S5: the distance value in each track of adaptive learning calculates current car Taoist monastic name during according to Installation and Debugging, thus the subsidiary distance that calculates two microwave bands on this track;

Near step S6: detect and to have judged whether that car rolls detection zone away from, have the distance in each track that car sails into whether to change, then be judged to be car the distance value before sailing into and roll detection zone away from if get back to by detection; If there is car to sail into, execution in step S7 then, otherwise, execution in step S9 then;

Step S7: stop this track timing;

Step S8: calculate car speed, vehicle information such as vehicle length, type of vehicle (preserve this markers simultaneously, use), and this information of buffer memory as calculating time headway, following distance;

Step S9: judge whether arrive to preserve data time at interval, wherein the traffic flow investigation data generally be 10 seconds to the several minutes time intervals as a time period; If arrive to preserve data time at interval, execution in step S10 then, otherwise, execution in step S3 then

Step S10: according to each information of vehicles in this time period of buffer memory, calculate vehicle flowrate, average velocity, vehicle somatotype counting (dissimilar flow), lane occupancy ratio, time headway, spaces of vehicles, the acquisition time information such as (being accurate to second) of this period, and it is saved on the nonvolatile recording medium (outage is not lost), re-execute step S3 then and continue to monitor and detect.

As shown in Figure 4, the back-end processing flow process (so-called back-end processing flow process is meant the flow process of the transport information of being obtained being carried out data processing) of the movable traffic information investigating instrument that provided of the utility model embodiment is as follows:

Step P1: beginning;

Step P2: data handling machine communicates according to set agreement with this movable traffic information investigating instrument and is connected;

Step P3: after connecting, download to data handling machine by ordering valid data, and save as the text of set form with this investigating instrument;

Step P4: from described text, read in the data of fixed time section, such as data from February 28,12: 0 seconds 10: 0 seconds to 2008 on the 27th February in 2008;

Step P5: with time is horizontal ordinate, and flow is an ordinate, draws flow curve;

Step P6: after drawing out flow curve, with the time period of appointment, as generated the information reports such as total flow in each stage in one hour for the stage;

Step P7: accept user's time conditions inquiry, the querying condition of 7 o'clock to 8:30 minute certain day morning for example, and export interior transport information of this time period;

Step P8: processing procedure finishes.

Further, as shown in Figure 2, the movable traffic information investigating instrument that the utility model embodiment can be provided is placed in the vertical rod that detects road one side, stride utility appliance such as the gantry, road or the cantilever body of rod and need not on the detection road, to be provided with, so both installation cost can be saved, installation process can be simplified again; The measurement range of this movable traffic information investigating instrument can not be subjected to the influence of central partition and metal guardrail, only with its setting height(from bottom) relevant; Its setting height(from bottom) is a plurality of nonlinearity in parameters combinations, is difficult to provide with unified formula, provides a setting height(from bottom) table of comparisons below, so that provided some instantiations of setting height(from bottom):

The setting height(from bottom) table of comparisons

The movable traffic information investigating instrument that the utility model embodiment is provided can also comprise storer; After the transport information that microwave traffic detecting device collects can be converted to unified format by the communication modular converter, be kept in the local storer, also can be real-time transmitted to data processing centre (DPC) by LAN (Local Area Network) or wireless transmission.Local memory capacity is: with 20 seconds be the cycle, then can store 4.9 day data; 60 seconds is the cycle, then can store 14.8 days; 15 minutes is the cycle, then can store 222 day data.The data file of storage is a text file format.

The movable traffic information investigating instrument that the utility model embodiment provides, its vehicle flowrate precision can reach single track flow＞95%, total flow＞98%; Bicycle speed of a motor vehicle precision＞97%, 10-250KM/H; Average speed trueness error＞97%, 10-250KM/H; Lane occupancy ratio precision 〉=95%.And can comprise 4 kinds of vehicle classifications, parameter can be provided with voluntarily.All configuration informations all adopt the flash memory mode to preserve, and prevent that power down from losing.

As seen, the realization of the utility model embodiment not only can science be obtained various transport information exactly, and the sun power that uses clean environment firendly is as the running energy, has simplified installation process, has reduced installation and operation cost, has avoided being connected the drawback of civil power.

The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.