Automobile speed limit warning system and speed limit method thereof

Abstract

The invention relates to an automobile speed limit warning system which is characterized by comprising a storing unit, a GPS positioning speed measuring unit, a control unit, an alarm signal transmitting unit and a concept color light generator. The storing unit is used for storing the azimuth mark and speed limit standard of each road; the GPS positioning speed measuring unit is in charge of collecting current automobile speed information and current azimuth marks and outputting the current automobile speed information and the current azimuth marks to the control unit; the control unit divides at least two speed intervals according to the current automobile running speed and the speed limit standards, judges the speed interval in which the current automobile running speed is located and outputs a corresponding warning signal according to the judging result; the warning signal transmitting unit receives signals sent or transmitted by the control unit; the concept color light generator receives the signals of the warning signal transmitting unit and outputs corresponding warning light; and the storing unit, the GPS positioning speed measuring unit and the warning signal transmitting unit are respectively connected with the control unit. The invention also discloses a speed limit method of the automobile speed limit warning system. By adopting the invention, one the one hand, the automobile speed information can be dynamically reflected in real time, and the problem that an overspeed prompt is not in time is radically solved; and on the other hand, a driver can increase the running speed as much as possible in a reasonable range so as to improve the traffic rate of the road.

Description

technical field [0001] The invention relates to a speed limit warning system for vehicles, in particular to a system and a method for using GPS navigation technology to warn drivers of speed limit. Background technique [0002] Today, with more and more cars, the roads are becoming more and more congested, and the road conditions are becoming more and more complicated. Traffic accidents caused by speeding occur frequently. Behind the strict traffic regulations, there are still many problems such as imperfect hardware facilities, and the following problems are highlighted: [0003] (1) The driver's driving line of sight and the angle of view of the instrument panel are too large during driving, and checking the instrument will distract the driver's attention. [0004] (2) The driver is aiming at the speed limit warning signs on the roadside in the process of driving. Due to problems such as the driver's line of sight and road conditions, these speed limit warning signs can b...

AI Technical Summary

Problems solved by technology

[0003] (1) The driver's driving line of sight and the angle of view of the instrument panel are too large during driving, and checking the instrument will distract the driver's attention

[0004] (2) The driver is aiming at the speed limit warning signs on the roadside during driving. Due to problems such as the driver's sight and road conditions, the negligence of these speed limit warning signs will be caused, so the desired effect cannot be achieved.

[0005] (3) After investigation, it is found that most drivers just drive by feeling the speed during driving, and often ignore the speed of the car without prompting, which inadvertently leads to speeding

[0006] In view of the problems referred to above, the prior art provides a voice prompt device used on navigation equipment. When the car overspeeds, the device gives voice prompts to the driver. The disadvantage of this prompt method is that when the driver hears the voice prompt, In fact, the car itself is already in an overspeed state. Even if the driver reacts quickly to reduce the speed, due to the principle of object inertia, it is impossible for the car to be decelerated immediately, and even the license plate number will be displayed during the deceleration process. May have been electronic police record violation

In addition, this kind of voice prompting device cannot prompt the situation that the vehicle speed is too low, resulting in a decrease in the road traffic rate due to the low vehicle speed.

[0007] Therefore, the voice prompting device of the prior art has at least the following disadvantages: there is only a corresponding prompt at the critical point of overspeed, so the timeliness of the prompt is poor, and the vehicle speed information cannot be reflected dynamically in real time.

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