Vehicle guidance system and control method thereof

Abstract

A vehicle guidance system consists of an environmental state monitoring device, a plurality of vehicle position detection devices and a vehicle-mounted device; the plurality of vehicle position detection devices are arranged along an extending direction of a guidance road segment, and the vehicle-mounted device is arranged on a vehicle; the environmental state monitoring device is electrically connected with a triggering device, and a termination device and a follow-up device are electrically connected with the triggering device; each vehicle position detection device can communicate with the vehicle-mounted device in a radio frequency communication mode; the environmental state monitoring device can monitor the environmental state of a region where the guidance road segment is; the vehicle position detection devices can detect whether a vehicle passes on the corresponding road segment; and the vehicle-mounted device can analyze radio frequency signals sent by the vehicle position detection devices and shows analyzed information to a driver and a passenger. The vehicle guidance system provided by the invention has the beneficial technical effects of being capable of guiding the vehicle to safely pass the road segment in a fogging period, enabling an expressway to bear certain traffic flow in the fogging period, and improving the traffic condition in the fogging period.

Description

technical field [0001] The invention relates to a traffic facility, in particular to a vehicle guidance system and a control method thereof. Background technique [0002] Our country has a vast land area, and there are relatively many foggy areas. For expressways built in foggy areas, when fog occurs, from the perspective of safety, generally when the occurrence of foggy days can be predicted in advance, temporary closed highways are often used. The means of roads are used to prohibit vehicles from entering the expressway. Due to the randomness of the appearance and duration of heavy fog, this has brought great troubles to people's travel, and the temporary closure of the expressway may cause local areas Traffic jams and long queues have seriously affected normal travel. In addition, the temporary closure of expressways requires a lot of manpower and material resources. Over the years, the cost is huge. Contents of the invention [0003] There are many disadvantages in th...

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Problems solved by technology

[0003] There are many disadvantages in the means of temporarily closing the expressway after fogging. In view of this problem, the inventor considers whether it is possible to induce vehicles to pass through the expressway safely during the fogging period through technical means, so that the expressway can also be safely closed during the fogging period. Reliably load a certain amount of traffic, if this goal can be achieved, travel delays caused by foggy conditions can be reduced as much as possible, and traffic congestion caused by too many waiting vehicles can be effectively alleviated. In addition, it is not necessary A large amount of manpower and material resources are used to implement road closure management, effectively reducing the management and operating costs of the expressway; so the inventor has conducted in-depth research on this issue: the common induction methods on the expressway generally include electronic display boards and road rail outline lights There are three types of roadside voice broadcasts. Among them, the electronic display board is either fixedly installed on the road or mounted on a patrol vehicle for mobile display. The outline lights are generally set on the guardrails on both sides of the driveway. These two induction methods Both need to rely on human vision. When fog occurs, especially when heavy fog and dense fog appear, road visibility and visual distance are greatly reduced, and human visual range is also very limited. In this case, the aforementioned two It is difficult for the induction method to play a role; although the voice broadcast method does not rely on human vision, there are great limitations in the voice broadcast, which cannot guide the vehicle accurately and effectively, and is of little significance in the case of poor visibility; In view of the status quo in this field, the inventor turned his attention to other fields and found that when the plane lands, the airborne device can display the runway situation and the relative distance between the plane and the runway in the form of electronic images according to various parameters sent by the airport ground device. The location and other conditions are displayed to the driver. Without considering other interference factors that are not conducive to the landing of the aircraft, this induction method can induce the driver to adjust the flight trajectory and land successfully without relying on human vision. Just imagine, If the aforementioned means of inducing aircraft landing can be used to induce vehicles, no matter day or night, when fogging or even dense fog, the vehicles can be induced to safely pass through the expressway under very low or extremely low visibility conditions, thereby Improve traffic conditions when fogging occurs; after clarifying the aforementioned ideas, the inventor has studied the implementation conditions of this induction method: this long-distance, airborne equipment in the special radar wireless frequency band is sophisticated in technology, expensive, and directly It is unrealistic to apply the airborne guidance system to vehicle guidance, so the inventor looked at the existing vehicle equipment in turn. With the advancement of technology, vehicle video radar systems, electronic map navigation systems, ETC systems (non-stop Electronic toll collection system) and other low-cost technologies based on the intelligence of embedded chip systems have been very mature, and their short-range wireless communication technologies such as RFID, WiFi, Bluetooth, ZigBee, etc., and their penetration rate are very wide. The hardware conditions have basically been possessed in fact, so the inventor has carried out a large amount of research and experiment again, and finally proposed the scheme of the present invention, concrete scheme is:

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