CN103337169A - A road tunnel traffic intelligent wireless early warning apparatus based on a doppler automatic detector - Google Patents

Abstract

Provided is a road tunnel traffic intelligent wireless early warning apparatus based on a doppler automatic detector. The road tunnel traffic intelligent wireless early warning apparatus based on a doppler automatic detector comprises a doppler automatic detector, a doppler data processing analyzer, a WSN wireless sensing network module, and a centralized controller. The doppler automatic detector monitors moving objects in an tunnel in a real-time manner. The doppler data processing analyzer is separately connected to the doppler automatic detector and the WSN wireless sensing network module. The doppler data processing analyzer reads traffic information data provided by the doppler automatic detector in a real-time manner, processes the data according to corresponding rules, and then transmits the data to the centralized controller through the WSN wireless sensing network module in a remote transmission mode. The road tunnel traffic intelligent wireless early warning apparatus based on the doppler automatic detector of the invention can exchange information inside and outside the tunnel timely. Once an accident occurs in the tunnel, the system apparatus will send out an early warning to drivers behind and an alert as soon as possible, vehicles are prevented from entering a tunnel entrance, secondary accidents are prevented from happening, and operations such as personnel rescue, accident handling, site cleaning and tunnel restoration can be accelerated.

Description

Highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector

Technical field

The invention belongs to traffic intelligent wireless alarming technical field, specifically relate to a kind of highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector.

Background technology

Along with the development that highway in China is built, long tunnel and super long tunnel are on the increase, especially in face of the security of operation of the tunnel group person that is placed in the operation management significantly.The emphasis of tunnel group safety management is security against fire, traffic safety, avoids second accident generation in the tunnel, ensures passing driver and conductor's life security, reduces the national wealth loss.Be in mostly in China tunnel the mountain range in length and breadth, the zone in gully, hills, tunnel space is narrower and small, sight line is limited, escape is difficult, causes the tunnel to become the high spot of accident rate section.Serious accident takes place in tunnel group when (as knocking into the back before and after dangerous material blast, vehicle spontaneous combustion, the vehicle), when especially the communications cable is blown up in the tunnel, because external information fails in time to link up in the tunnel, the tunnel face does not in time stop vehicle to be let pass, causing at short notice, follow-up vehicle still continuously enters the accident tunnel, might cause second accident to take place on the one hand, the work that will make personnel's rescue, accident treatment, on-the-spot cleaning repair the tunnel that enters of a large amount of follow-up vehicles becomes more difficult on the other hand.Under the traditional early warning and alarm mode, the traffic police can not lock particular location at once, special express highway section for many tunnels, examine accident, to set out police strength loaded down with trivial details relatively, it is time-consuming longer to be on the scene, and adds in the tunnel face to report to the police, can not be in very first time driver's early warning rearward, very easily cause front vehicle because not clear the place ahead situation knocks into the back in the tunnel, cause second accident.

Summary of the invention

The present invention solves the existing in prior technology technical matters, and a kind of highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector is provided.

Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: a kind of highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector, described device comprises Doppler's autodetector, a doppler data Treatment Analysis device, a WSN radio sensing network module and a Centralized Controller, described Doppler's autodetector is installed on the top of vcehicular tunnel wall, 2.5 meters height overhead, can efficient real time monitor that moving target is automobile in the whole tunnel scene, described doppler data Treatment Analysis device is connected with WSN radio sensing network module with Doppler's autodetector respectively, doppler data Treatment Analysis device reads traffic information data that Doppler's autodetector provides in real time and handles these data according to respective rule, gives Centralized Controller by WSN radio sensing network module remote transmission then.

A kind of highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector, the method for early warning of described device is: the Doppler's autodetector that is installed on vcehicular tunnel wall top in real time in the whole tunnel of the monitoring scene moving target be automobile, doppler data Treatment Analysis device is gathered the original doppler data of Doppler's autodetector in real time, and original doppler data is stored in the data-carrier store of doppler data Treatment Analysis device, the data comparator of doppler data Treatment Analysis device is searched the content in the data-carrier store and is read into DSP and handles tabulation, call the data correction function and handle original doppler data, be stored in DSP after the processing and analyze tabulation, call the doppler data correcting algorithm again and handle doppler data, and the doppler data after will handling is stored in the output frame buffer zone, by WSN radio sensing network module the doppler data of buffer zone is uploaded in Centralized Controller through wireless transmission method, doppler data and predetermined threshold value after doppler data Treatment Analysis device also will be handled compare, alarm equipment alarm output if need report to the police in the doppler data Treatment Analysis device then, and by WSN radio sensing network module warning message is uploaded in Centralized Controller.

As preferably, in the method for early warning of described device, moving target is that the method for automobile is in the whole tunnel of the real-time monitoring of the Doppler's autodetector scene: by the synthetic signal that fixed frequency is ftra of frequency program device, one route transmission antennas transmit is gone out, and one the tunnel down enters the frequency mixer at I or Q passage place; When moving target enters radar coverage, the moving target reflection echo is received by receiving antenna, then the moving signal of this Doppler shift is sent into frequency mixer and carried out mixing with before signal, handle I signal or the Q signal that can obtain containing doppler information finally by intermediate frequency filtering; Analyze I signal or Q signal, wherein include a Doppler frequency f _D, the computing formula of Doppler frequency is as follows:

$f_D=2f_0\·\frac{v}{c_0}\·\cos \mathrm{\α}$

Wherein, f _DBe Doppler frequency, f ₀Be the transmission frequency of radar, ν is the speed of moving target, c ₀Be the light velocity, α is the angle between direction of motion and sensor and the moving target line; Transmission frequency f ₀Be chosen to be 24GHz, calculate the Doppler frequency f of expection _D, and obtain Doppler frequency f _DCorresponding relation with moving target movement velocity ν.

The present invention can in time link up the inside and outside information in tunnel, in case have an accident in the tunnel, the driver's early warning rearward of the system and device very first time is also reported to the police automatically, the tunnel face in time stops vehicle to be let pass, the work that can avoid second accident generation and quickening personnel rescue, accident treatment, on-the-spot cleaning to repair the tunnel.

Description of drawings

Fig. 1 is a kind of system frame structure synoptic diagram of the present invention.

Embodiment

Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.

Embodiment: a kind of highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector, described device comprises Doppler's autodetector, a doppler data Treatment Analysis device, a WSN radio sensing network module and a Centralized Controller, described Doppler's autodetector is installed on the top of vcehicular tunnel wall, 2.5 meters height overhead, can efficient real time monitor that moving target is automobile in the whole tunnel scene, described doppler data Treatment Analysis device is connected with WSN radio sensing network module with Doppler's autodetector respectively, doppler data Treatment Analysis device reads traffic information data that Doppler's autodetector provides in real time and handles these data according to respective rule, gives Centralized Controller by WSN radio sensing network module remote transmission then.

A kind of highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector, its method for early warning is: the Doppler's autodetector that is installed on vcehicular tunnel wall top in real time in the whole tunnel of the monitoring scene moving target be automobile, doppler data Treatment Analysis device is gathered the original doppler data of Doppler's autodetector in real time, and original doppler data is stored in the data-carrier store of doppler data Treatment Analysis device, the data comparator of doppler data Treatment Analysis device is searched the content in the data-carrier store and is read into DSP and handles tabulation, call the data correction function and handle original doppler data, be stored in DSP after the processing and analyze tabulation, call the doppler data correcting algorithm again and handle doppler data, and the doppler data after will handling is stored in the output frame buffer zone, by WSN radio sensing network module the doppler data of buffer zone is uploaded in Centralized Controller through wireless transmission method, doppler data and predetermined threshold value after doppler data Treatment Analysis device also will be handled compare, alarm equipment alarm output if need report to the police in the doppler data Treatment Analysis device then, and by WSN radio sensing network module warning message is uploaded in Centralized Controller.

In the method for early warning Doppler's autodetector in real time in the whole tunnel of the monitoring scene moving target be that the method for automobile is: by the synthetic signal that fixed frequency is ftra of frequency program device, one route transmission antennas transmit is gone out, and one the tunnel down enters the frequency mixer at I or Q passage place; When moving target enters radar coverage, the moving target reflection echo is received by receiving antenna, then the moving signal of this Doppler shift is sent into frequency mixer and carried out mixing with before signal, handle I signal or the Q signal that can obtain containing doppler information finally by intermediate frequency filtering; Analyze I signal or Q signal, wherein include a Doppler frequency f _D, the computing formula of Doppler frequency is as follows:

$f_D=2f_0\·\frac{v}{c_0}\·\cos \mathrm{\α}$

Wherein, f _DBe Doppler frequency, f ₀Be the transmission frequency of radar, ν is the speed of moving target, c ₀Be the light velocity, α is the angle between direction of motion and sensor and the moving target line; Transmission frequency f ₀Be chosen to be 24GHz, calculate the Doppler frequency f of expection _D, and obtain Doppler frequency f _DCorresponding relation with moving target movement velocity ν.

The present invention can in time link up the inside and outside information in tunnel, in case have an accident in the tunnel, the driver's early warning rearward of the system and device very first time is also reported to the police automatically, the tunnel face in time stops vehicle to be let pass, the work that can avoid second accident generation and quickening personnel rescue, accident treatment, on-the-spot cleaning to repair the tunnel.

At last, should be pointed out that above embodiment only is the more representational example of the present invention.Obviously, technical scheme of the present invention is not limited to above-described embodiment, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.

Claims (3)

1. highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector, it is characterized in that described device comprises Doppler's autodetector, a doppler data Treatment Analysis device, a WSN radio sensing network module and a Centralized Controller, described Doppler's autodetector is installed on the top of vcehicular tunnel wall, 2.5 meters height overhead, can efficient real time monitor that moving target is automobile in the whole tunnel scene, described doppler data Treatment Analysis device is connected with WSN radio sensing network module with Doppler's autodetector respectively, doppler data Treatment Analysis device reads traffic information data that Doppler's autodetector provides in real time and handles these data according to respective rule, gives Centralized Controller by WSN radio sensing network module remote transmission then.

2. according to the described a kind of highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector of claim 1, the method for early warning that it is characterized in that described device is: the Doppler's autodetector that is installed on vcehicular tunnel wall top in real time in the whole tunnel of the monitoring scene moving target be automobile, doppler data Treatment Analysis device is gathered the original doppler data of Doppler's autodetector in real time, and original doppler data is stored in the data-carrier store of doppler data Treatment Analysis device, the data comparator of doppler data Treatment Analysis device is searched the content in the data-carrier store and is read into DSP and handles tabulation, call the data correction function and handle original doppler data, be stored in DSP after the processing and analyze tabulation, call the doppler data correcting algorithm again and handle doppler data, and the doppler data after will handling is stored in the output frame buffer zone, by WSN radio sensing network module the doppler data of buffer zone is uploaded in Centralized Controller through wireless transmission method, doppler data and predetermined threshold value after doppler data Treatment Analysis device also will be handled compare, alarm equipment alarm output if need report to the police in the doppler data Treatment Analysis device then, and by WSN radio sensing network module warning message is uploaded in Centralized Controller.

3. according to the described a kind of highway tunnel traffic intelligent radio prior-warning device based on Doppler's autodetector of claim 2, it is characterized in that in the method for early warning of described device, moving target is that the method for automobile is in the whole tunnel of the real-time monitoring of the Doppler's autodetector scene: by the synthetic signal that fixed frequency is ftra of frequency program device, one route transmission antennas transmit is gone out, and one the tunnel down enters the frequency mixer at I or Q passage place; When moving target enters radar coverage, the moving target reflection echo is received by receiving antenna, then the moving signal of this Doppler shift is sent into frequency mixer and carried out mixing with before signal, handle I signal or the Q signal that can obtain containing doppler information finally by intermediate frequency filtering; Analyze I signal or Q signal, wherein include a Doppler frequency f _D, the computing formula of Doppler frequency is as follows:

$f_D=2f_0\·\frac{v}{c_0}\·\cos \mathrm{\α}$

Wherein, f _DBe Doppler frequency, f ₀Be the transmission frequency of radar, ν is the speed of moving target, c ₀Be the light velocity, α is the angle between direction of motion and sensor and the moving target line; Transmission frequency f ₀Be chosen to be 24GHz, calculate the Doppler frequency f of expection _D, and obtain Doppler frequency f _DCorresponding relation with moving target movement velocity ν.

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