A reminder device and method for prompting traffic signal light information in advance and in real time

Abstract

The invention discloses a device for reminding information of traffic light ahead of time or in real time. The device comprises an image recognition module, a distance measuring module, a central processor ECU, a speed measuring module, a positioning module, a server, an information acquisition module, a reminding strategy module and a display and reminding module. The invention further discloses a reminding method of the device. By adopting the device, the traffic light state information and the passing time can be reminded to a driver, so that the driver can handle the information state of traffic light and the left passing time of a front road cross ahead of time or in real time, the speed of a vehicle self and the speed of a vehicle ahead can be measured by using the speed measuring module, the driver can be reminded to drive at a safe speed according to data and control strategies set by the reminding strategy module in advance, the time for reaching the road cross and the left passing time for passing a road cross parking line can be calculated, the driver can be assisted in deciding the driving speed, and can take measures in advance to control the driving speed, the driving behavior can be smooth, the rate of sudden change of the driving speed can be reduced, and the vehicle security can be improved.

Description

technical field [0001] The invention relates to a reminder device for prompting traffic signal light information in advance and in real time, and also relates to a working method of the reminder device. Background technique [0002] With the popularization of automobiles, road rules are becoming more and more complicated. When drivers face unfamiliar intersections, they have to check various traffic instructions and face the remaining time of the traffic lights ahead, and even do not know the specific location of the stop line. Judging whether the current speed can pass the intersection smoothly is prone to misjudgment, which often results in rushing to a red light and causing safety hazards or even accidents, or adopting rapid braking in a safe mind leads to rear-end collisions, and the conservative and safe approach can pass However, if you choose not to pass, you need to wait for a long time at the intersection, which will waste energy and cause pollution. [0003] In ad...

AI Technical Summary

Problems solved by technology

[0002] With the popularization of automobiles, road rules are becoming more and more complicated. When drivers face unfamiliar intersections, they have to check various traffic instructions and face the remaining time of the traffic lights ahead, and even do not know the specific location of the stop line. Judging whether the current speed can pass the intersection smoothly is prone to misjudgment, which often results in rushing to a red light and causing safety hazards or even accidents, or adopting rapid braking in a safe mind leads to rear-end collisions, and the conservative and safe approach can pass If you choose not to pass, you need to wait for a long time at the intersection, which wastes energy and causes pollution.

[0003] In addition, in some specific environments, such as in the morning, the vehicle is driving from west to east facing the sun, or there are tall vehicles or branches blocking the line of sight in front, it is often difficult to see the specific signal of the traffic light and the remaining time, or Due to the failure of the light tube, the time information displayed by the traffic lights is incomplete, which brings uncertain factors to driving and may cause potential accidents

[0004] At present, some vehicles use satellite positioning systems to avoid the above problems, but the general satellite positioning system is not suitable for the positioning of fast-moving vehicles. The general positioning accuracy error is 10 meters, but there are also high-cost positioning systems that can control the error at about 1 meter. , but the positioning system has the defect of response time lag, so it cannot provide real-time and accurate location information to the driver. It can be seen that the accuracy and accuracy of predicting whether to pass the intersection on time based on the satellite positioning system is not enough or the cost is very high

[0005] Coupled with the fact that the current domestic traffic facilities are unevenly constructed, intelligent traffic signals have not yet been popularized, and the control strategy of changing the length of signal lights at any time with changes in the traffic environment is adopted. a lot of inconvenience

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