System and method of piezoelectric electricity self-generating speed and distance intelligent monitoring

Abstract

The invention discloses a system and a method of piezoelectric electricity self-generating speed and distance intelligent monitoring. The system comprises a speed and distance intelligent monitoring unit and a piezoelectric electricity self-generating unit. The speed and distance intelligent monitoring unit comprises a front piezoelectric belt and a rear piezoelectric belt which are laid under a road face in transversal and spaced arrangement and an intelligent controller. The intelligent controller is composed of an amplifying circuit module, a filter circuit module, a hysteresis comparator circuit module and a microprocessor module which are in sequential connection. An output end of the microprocessor module is connected with a digital readout warning plate. The piezoelectric electricity self-generating unit comprises a plurality of piezoelectric transducers, a rectification filter circuit and a storage battery. The method comprises the steps: 1, storage and supply of piezoelectric self-generated electricity and electric energy; 2, real-time collection and processing of a signal; 3, processing and display of speed information; and 4, processing and display of distance information. The system is novel and reasonable in design, environment-friendly, economical, capable of guaranteeing safe and rapid travel of a vehicle and reducing occurrence of traffic accidents and convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a system and method for intelligent monitoring of vehicle speed and distance between piezoelectric self-generating vehicles. Background technique [0002] At present, most of the vehicle distance detection devices used in road traffic are detectors, which analyze and identify the distance between vehicles before and after vehicles by transmitting electromagnetic waves or ultrasonic signals. Since the detectors are mostly vehicle-mounted devices, they are expensive and the emitted Electromagnetic waves or ultrasonic waves are susceptible to interference and cannot normally calculate the distance between vehicles. [0003] Furthermore, most of the vehicles are speeding out of control and rear-end collisions occur. Now the speed limit of the expressway is mostly using warning signs, which are easily ignored by drivers and the warning effect is poor. Fu...

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Problems solved by technology

[0002] At present, most of the vehicle distance detection devices used in road traffic are detectors, which analyze and identify the distance between front and rear vehicles by transmitting electromagnetic waves or ultrasonic signals to the front and rear vehicles. Since the detectors are mostly vehicle-mounted devices, they are expensive and the emitted Electromagnetic waves or ultrasonic waves are susceptible to interference and cannot normally calculate the distance between vehicles

[0003] Furthermore, most of the vehicles are speeding out of control and rear-end collisions occur. Now the speed limit of the expressway is mostly using warning signs, which are easily ignored by drivers, and the warning effect is poor. Further strengthening the speed limit control is still one of the important measures to solve traffic accidents. one

[0004] Nowadays, most of the vehicle distance and speed detectors use external power supply, which has relatively high requirements on the conditions of use, and it is difficult to popularize and use them in remote areas. Some also use solar panels as the energy source, but they are highly dependent on the weather. just won't work

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