CN108828892A - A kind of full-automatic water curtain projection traffic indication system for Impacts Evaluation of Urban Tunnel - Google Patents

Abstract

The invention specifically relates to a fully automatic water curtain projection traffic indication system for urban underground roads. The fire detection module transmits the detected temperature and position information in the underground road space to the central control module in real time; the central control module calculates the underground road Whether the temperature in the space exceeds the warning value, when exceeding the warning value, the central control module issues early warning information and the spatial position of the disaster situation to the water curtain projection module; after receiving the early warning information sent by the central control module, the water curtain projection module Start the projection equipment and water curtain nozzles near the disaster location to display early warning information in the form of water curtain projection. The invention can accurately detect the fire danger of the road in the underground space in real time through the distributed optical fiber temperature-sensitive fire detection system, and use the water curtain projection device to perform water curtain projection to control the traffic flow in a physical way of "soft blocking" to prevent vehicles from entering The area where the fire occurs, and isolate the high temperature and harmful gas in the underground road space.

Description

A fully automatic water screen projection traffic indication system for urban underground roads

technical field

The invention relates to water curtain projection technology, in particular to a fully automatic water curtain projection traffic indication system for urban underground roads, which is used to automatically guide vehicles to evacuate and control traffic order when a fire occurs in an urban underground road.

Background technique

With the development of urbanization, the problem of traffic congestion is becoming more and more serious. Planning urban three-dimensional transportation and actively developing underground space are of great significance to alleviating traffic congestion, improving traffic order, and maximizing the efficiency of urban traffic operation. The construction of urban underground roads has also received more and more attention from various places.

Urban underground roads have closed space, monotonous environment, and poor visual conditions. The spatial characteristics of underground roads determine the difference between them and general industrial and civil building fire hazards. The fire hazard consequences of underground roads, in addition to direct economic losses and casualties, secondary disasters such as traffic accidents, personnel poisoning, explosions, etc., not only aggravate the spread of fire, but also disrupt traffic order, increase safety evacuation and fire fighting Difficulty of rescue.

In urban underground roads, fire characteristics usually have the following aspects:

1) The fire point is mobile. When a fire breaks out in an urban underground road, drivers cannot respond quickly to the fire due to poor visual conditions, and the vehicle on fire will continue to drive normally on the underground road, and other normal driving vehicles will easily cause traffic accidents when avoiding the vehicle on fire.

2) Diversity of combustion forms. The combustibles of urban underground road fires mainly include traffic vehicles and their cargo, and the combustion forms include gas phase, liquid phase, solid phase and mixed combustion. When the premixed concentration of combustible gas reaches the explosion limit, an explosion will also occur. In the urban underground road space with poor ventilation conditions, combustion will produce a large amount of carbon monoxide, which poses a threat to the personal safety of drivers.

3) Limitations of safe evacuation. When a fire occurs, the urban underground road is not only a channel for smoke diffusion and burning, but also a place for evacuation and rescue. High temperature and low visibility seriously interfere with the driver's normal driving, which can easily cause traffic chaos, and even lead to new traffic accidents and secondary disasters.

The current solution is mainly to rely on fire safety management personnel to manually guide traffic flow, close road entrances, fire-fighting vehicles storm and strengthen ventilation and smoke exhaust when a fire occurs. Whether it is traffic electronic signs or ordinary signs, the actual situation of vehicle drivers The effect of warning and guidance is limited and the efficiency is low.

The problem to be solved is how to guide the traffic flow in the underground road space at the first time when the fire occurs, evacuate the vehicles, control the traffic order, reserve enough road space for the rescue vehicles, and effectively control the high temperature gas in the underground road space and the spread of smoke. In this process, it is realized by the traffic indication method of automatic water curtain projection, which has good effect.

Contents of the invention

The purpose of the present invention is to provide a fully automatic water curtain projection traffic indication system for urban underground roads based on the shortcomings of the above-mentioned prior art. The system achieves the goal of taking early warning control measures by setting a fire early warning module in its main control chip.

The purpose of the present invention is achieved by the following technical solutions: a fully automatic water curtain projection traffic indication system for urban underground roads, characterized in that the system includes

A fire detection module, the fire detection module uses a distributed optical fiber temperature measurement system installed in the underground road to detect the temperature field information of each point in the space where the optical fiber is located, and locates the measured temperature point while detecting the temperature, and then detects the temperature The temperature and location information in the underground road space are transmitted to the central control module in real time;

Central control module, the central control module calculates whether the temperature in the underground road space exceeds the warning value, and when the temperature exceeds the warning value, the central control module issues early warning information and the spatial location of the disaster to the water curtain projection module;

The water curtain projection module, the water curtain projection module includes several groups of projection equipment and water curtain nozzles arranged along the underground road, the projection equipment and the water curtain nozzle are located above the urban underground road space, after receiving the early warning information sent by the central control module, Start the projection equipment and water curtain nozzles near the disaster location to display early warning information in the form of water curtain projection.

Further, the fire detection module is connected with the central control module through a communication module, and the communication module is an RS485 serial port or Ethernet.

Further, the water curtain projection module includes a water curtain projection control host, and the water curtain projection control host is connected to a projection device through a communication unit, and the projection device includes a digital projection module and a media player module, and the water curtain projection control The host is also connected to the water curtain nozzle through the output module. When the warning information is received, the water curtain nozzle sprays the water curtain, the media playback module generates the required projected warning image, and the digital projection module projects the warning image on the water curtain.

Further, the early warning images include disaster early warning images and vehicle guidance signs.

Further, the several groups of projection equipment and water curtain nozzles are evenly distributed along the underground road, or are arranged upstream of the bifurcation of the underground road.

Further, when the early warning information is received, the projection device and the water curtain nozzle located at the upstream road node where the disaster occurs are activated.

Furthermore, the communication module, the central control module, and the water curtain control host all adopt a dual-machine hot standby redundancy mode. When the host fails, it will immediately switch to the standby machine to ensure the normal operation of the system, thereby improving the reliability of the entire system.

The advantage of the present invention is that, through the distributed optical fiber temperature-sensitive fire detection system, the present invention can monitor the fire danger and its location in the urban underground road space in real time, and then through the water curtain projection method, the nearby "soft blocking" physical To control the traffic flow, guide the drivers to evacuate in an orderly manner, so as to prevent secondary accidents caused by vehicles entering by mistake; at the same time, the existence of the water curtain can effectively filter the high temperature and toxic gases generated by the fire, prevent the expansion of the disaster, and effectively improve the Driving safety on underground roads; the system has simple structure, high application value, and is suitable for large-scale promotion.

Description of drawings

Fig. 1 is a schematic structural diagram of the control system of the present invention.

Fig. 2 is a schematic diagram of the starting position of the water curtain according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of the starting position of the water curtain according to another embodiment of the present invention.

Fig. 4 is a schematic diagram of the starting position of the water curtain according to another embodiment of the present invention.

Detailed ways

The features of the present invention and other relevant features are described in further detail below in conjunction with the accompanying drawings through the embodiments, so as to facilitate the understanding of those skilled in the art:

Embodiment: As shown in FIG. 1 , this embodiment relates to a fully automatic water screen projection traffic indication system for automatically guiding traffic to evacuate and controlling traffic order when a fire hazard occurs in an urban underground road. The system includes

A fire detection module, the fire detection module uses a distributed optical fiber temperature measurement system installed in the underground road to detect the temperature field information of each point in the space where the optical fiber is located, and locates the measured temperature point while detecting the temperature, and then detects the temperature The temperature and location information in the underground road space are transmitted to the central control module in real time;

Central control module, the central control module calculates whether the temperature in the underground road space exceeds the warning value, and when the temperature exceeds the warning value, the central control module issues early warning information and the spatial location of the disaster to the water curtain projection module;

The water curtain projection module, the water curtain projection module includes several groups of projection equipment and water curtain nozzles arranged along the underground road, the projection equipment and the water curtain nozzle are located above the urban underground road space, after receiving the early warning information sent by the central control module, Start the projection equipment and water curtain nozzles near the disaster location to display early warning information in the form of water curtain projection.

Among them, in the distributed optical fiber temperature measurement system, a large current pulse is generated by the optical transmitter, which drives the semiconductor laser to generate a high-power optical pulse. The optical pulse emitted by the laser pigtail passes through the optical coupler and enters the In the optical fiber, and then into the sensing optical fiber. After the laser is scattered in the optical fiber, the Raman backscattered light carrying temperature information is returned to the optical coupler, and sent to the acquisition and processing unit through the receiver, which can output parameters such as temperature and spatial position in the underground road space.

The water curtain projection module is sequentially arranged at a certain distance above the underground road, or above the bifurcation of the underground road, and its signal receiving end is connected with the control command output end of the control module. According to the different instructions received, the corresponding content is displayed, such as "danger", "stop" and other information, so that the driver can obtain the disaster situation of the underground road ahead in advance and adjust in time. The water curtain prevents the driver from straying into the place where the fire occurs by means of a "soft barrier" physical method. At the same time, the water curtain is used as the separation line between the dangerous area and the safe area to isolate the high temperature and harmful gases generated by combustion from the driver and protect the safety of the driver.

The water curtain projection module includes a water curtain projection host, a communication unit, a digital projection module, a media player module, an output module and a water curtain execution unit, and the fully automatic water curtain projection traffic indication system of the present invention also includes A connected Ethernet or serial port communication module, a communication unit and a level drive unit respectively connected to the execution unit, and the level drive circuit is connected to the water curtain execution unit (that is, the water curtain nozzle).

The communication module, central control module, and water curtain control host all adopt dual-machine hot standby redundancy mode. When the host fails, it will immediately switch to the standby machine to ensure the normal operation of the system, thereby improving the reliability of the entire system.

The invention overcomes the problems of out-of-control traffic order caused by poor sight distance, untimely information transmission and driver panic when a fire occurs on an underground road, thereby causing rescue difficulties and secondary accidents, and solves the traditional traffic sign setting It is of great significance to improve the safety of driving on underground roads that it cannot timely predict the information ahead and the shortcomings that are not easy to be noticed, and at the same time effectively isolate the diffusion of high-temperature harmful gases in the underground space. Therefore, it has certain application value and is suitable for large-scale promotion.

Claims (7)

1. a kind of full-automatic water curtain for Impacts Evaluation of Urban Tunnel projects traffic indication system, it is characterised in that the system comprises

Fire detection module, the fire detection module is using the temperature-measuring system of distributed fibers being arranged in road tunnel, inspection Then survey spatial points temperature field information locating for optical fiber will test to measured temperature point location while detecting temperature Temperature and location information real-time Transmission in road tunnel space is to central control module；

Central control module, whether the temperature that the central control module calculates in road tunnel space is more than warning value, when super When crossing warning value, the central control module issues the spatial position of warning information and the condition of a disaster to water curtain projection module；

Water curtain projection module, water curtain projection module include the several groups projection device and drencher along road tunnel setting, are thrown Shadow equipment and drencher are located at the top in Impacts Evaluation of Urban Tunnel space, when the warning information for receiving central control module transmission Afterwards, start the projection device and drencher near the condition of a disaster position, show warning information in the form of water curtain projection.

2. full-automatic water curtain as described in claim 1 projects traffic indication system, which is characterized in that the water curtain projection module Control host is projected including water curtain, the water curtain projection control host is connect by communication unit with projection device, the projection Equipment includes digital projection module and media player module, and the water curtain projection control host also passes through output module and water curtain sprays Head connection erupts water curtain, the early warning figure that media player module projects needed for generating by drencher after receiving warning information Picture, digital projection module is by early warning image projection on water curtain.

3. full-automatic water curtain as claimed in claim 2 projects traffic indication system, which is characterized in that fire detection module passes through Communication module is connect with central control module, and the communication module is RS485 serial ports or Ethernet.

4. water curtain as described in claim 1 full-automatic projects traffic indication system, which is characterized in that the early warning image includes The condition of a disaster early warning image and vehicle boot flag.

5. full-automatic water curtain as described in claim 1 projects traffic indication system, which is characterized in that the several groups projection is set Standby and drencher is uniformly distributed along road tunnel, or is set to the upstream position of road tunnel bifurcated mouth.

6. water curtain as described in claim 1 full-automatic projects traffic indication system, which is characterized in that when receiving warning information Afterwards, starting is located at projection device and drencher at the condition of a disaster point upstream road circuit node.

7. full-automatic water curtain as claimed in claim 3 projects traffic indication system, which is characterized in that communication module, center control Molding block, water curtain control host are all made of two-node cluster hot backup redundant fashion, when host breaks down, are immediately switched to standby host, protect Hinder system worked well, to improve the reliability of whole system.