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A traffic control method when emergency vehicles run red lights at intersections based on RFID technology

A technology for emergency vehicles and traffic control, applied in the direction of traffic control systems, traffic control systems, instruments, etc. of road vehicles, can solve the problem of high traffic accident rate, and achieve the effect of improving safety, improving traffic efficiency, and having great application prospects.

Active Publication Date: 2021-04-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high traffic accident rate caused by running a red light at an existing emergency vehicle crossing, and propose a traffic control method when running a red light at an emergency vehicle crossing based on RFID technology

Method used

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  • A traffic control method when emergency vehicles run red lights at intersections based on RFID technology
  • A traffic control method when emergency vehicles run red lights at intersections based on RFID technology
  • A traffic control method when emergency vehicles run red lights at intersections based on RFID technology

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Experimental program
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specific Embodiment approach 1

[0030] Specific embodiment one: a kind of traffic control method when running a red light at an emergency vehicle intersection based on RFID technology comprises the following steps:

[0031] The system of the present invention is divided into three modules, that is, a radio frequency information collection module, an MCU control module, and an early warning induction module. When the emergency vehicle is detected by the RFID reader, the radio frequency information collection module combines the RSSI positioning algorithm to identify the lane where the emergency vehicle is located, and transmits the collected information to the MCU control module. MCU controls the response of the early warning induction module: the light color of the lane where the emergency vehicle is located turns red, reminding the social vehicles in this lane to change to other lanes to provide space for the emergency vehicle to pass quickly; the lane where the traffic flow that conflicts with the emergency...

specific Embodiment approach 2

[0049] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in the first step, when the emergency vehicle enters the intersection and intends to run through a red light, the specific process for determining the route that conflicts with the emergency vehicle is:

[0050] The warning line is the vertical line of the parking distance (including the driver's reaction distance and braking distance) from the parking position. When the emergency vehicle passes the sensing device, the warning light at the warning line will send out a warning signal. At this time, the vehicles passing the warning line can continue to drive forward at the original speed, while the vehicles behind the warning line will take corresponding deceleration processing.

[0051] When the urgent vehicle enters the intersection from the south entrance, four conflict routes with high conflict probability are obtained:

[0052] (1) Emergency vehicles go straight, and east entrance vehicles ...

specific Embodiment approach 3

[0072] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: in the step two, according to the route determined in step one that conflicts with the emergency vehicle, determine the installation position of the RFID reader on the four entrances of the intersection The specific process is:

[0073] The relevant parameters of each intersection are shown in Table 1.

[0074] Table 1 Intersection related parameter definitions

[0075]

[0076] The perceived reaction distance S of the vehicle that needs to stop and give way in the lane corresponding to the conflicting route of the emergency vehicle 0 for:

[0077] S 0 =V 1 ·Δt

[0078] where V 1 is the normal vehicle speed, Δt is the reaction time of the driver, and the value is 0.5s;

[0079] The braking distance S of the vehicle that needs to stop and give way on the lane corresponding to the conflicting route of the emergency vehicle 1 for:

[0080]

[0081] W...

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Abstract

The invention discloses a traffic control method based on an RFID technology and used when an emergence vehicle runs a red light at an intersection. The technical purpose is to solve the problem thatthe traffic accident rate is high when the existing emergence vehicle runs the red light at the intersection. The method comprises the steps that when an RFID reader detects an electronic tag of the emergence vehicle and determines a lane where the emergence vehicle is located, an LED color-variable lane indicator and an indicating mark corresponding to the lane where the emergency vehicle is located turn red, and vehicles in front of the emergency vehicle change other lanes; an LED color-variable lane indicator on a lane corresponding to a path having conflicts with the emergency vehicle turns yellow, and a caution light of an entrance lane of the path having the conflicts with the emergency vehicle flickers; the heading direction of the vehicles serves as a right forward direction, vehicles in front of the caution light are driven normally, and vehicles behind the caution light are driven at reduced speed and stopped to give way to the emergency vehicle right behind a stop line. Thetraffic control method is applied to the field of traffic control.

Description

technical field [0001] The invention relates to a traffic control method when an emergency vehicle runs a red light at an intersection. Background technique [0002] Emergency vehicles are an indispensable part of modern urban life, and their fast and safe driving is very important. But its collision accidents at intersections also often occur, wherein a considerable proportion is caused by emergency vehicles running red lights. According to the survey results of emergency vehicle accidents in the Virginia region of the United States, about 31% of emergency vehicle accidents occurred at signalized intersections. Affected by factors such as traffic flow at the intersection, sight distance, and driving speed, drivers of vehicles on intersecting roads may not notice the arrival of emergency vehicles, and still drive at a relatively high speed, thus colliding with emergency vehicles, resulting in Extremely serious losses, there are many accidents like this. [0003] At presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/087
CPCG08G1/087
Inventor 王思晴王健
Owner HARBIN INST OF TECH