Brake signal rapid sending method built-in vehicle tire and apparatus thereof

Abstract

The invention discloses a method for quickly sending a built-in braking signal of an automobile tyre and a device thereof. The device consists of a tyre built-in acceleration transducer, a sending end 8-position microcontroller and a sending end radio frequency module. The method comprises that a built-in acceleration signal performs a dynamic cycle covering storage of a sampling signal on by memory capacity of the 8-position microcontroller, signal smooth processing in an accumulated sum mode and automatic determination of a braking turning point in an accumulated sum difference value mode, and a subsequent sampling signal of the brake turning point is transmitted by using time intervals of various samplings in a high-speed wireless mode. The high-efficiency processing algorithm adopts the summating operation to replace the time-consuming division operation, and is combined with a storing mode which saves storage capacity and circularly covering and utilizing the memory, so that the 8-position microcontroller can realize the real-time transmission requirement of the automotive built-in braking signal without expanding the memory capacity.

Description

technical field [0001] The invention relates to a real-time monitoring technology for driving safety of automobiles, in particular to a method and device for quick transmission of built-in braking signals of automobile tires. Background technique [0002] Braking performance is one of the important factors of automobile driving safety. Emerging sensor-based braking performance monitoring technology with built-in automobile tires has attracted research attention because of its high degree of intelligence, strong safety, and good concealment. Since the braking process is short and the braking signal is fleeting, in order to realize the tire built-in braking performance monitoring, the acceleration sampling signal before the braking operation must be smoothed and denoised, and the starting moment of the braking operation must be judged , that is, the brake inflection point is judged, and the subsequent short-term brake sampling signal can be transmitted to the external receivin...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art in dealing with the storage capacity requirements of continuous large-scale sampling signals, the time-consuming inefficiency of processing algorithms, and the real-time transmission, and provide a cyclic coverage method using memory and summation operations. The fast and efficient processing algorithm that replaces the division operation, the 8-bit microprocessor can do the job without expanding the memory capacity, and can realize the real-time synchronous transmission of the follow-up sampling signal of the braking inflection point through the high-speed radio frequency module. Method and device

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