帮忙翻译摘要 谢谢
发布网友
发布时间：2022-04-29 06:55
共2个回答
热心网友
时间：2022-06-20 21:14
With the social and economic development, transportation thriving, a sharp rise in the number of cars. Situation is becoming serious traffic congestion, crash occurred frequently, resulting in the inevitable human casualties and economic losses, for this situation, design a fast response, high reliability and a more economical vehicle reversing warning system is inevitable collision line.
Collision warning system in the car reversing the most important link in the rear of the car and the obstacle is detected the distance between. Ultrasonic distance measurement method is the most common method of measuring distance. Ultrasonic distance measurement method is to continuously detect obstacles encountered after the launch of ultrasonic echo reflected, thereby transmitting and receiving echo measure the time difference, and then calculate the corresponding distance.
In order to improve the reliability of backup, the design of four non-contact ultrasonic distance sensor to achieve after the completion of the left, after the left-middle, middle, after the right, the distance after the detection of obstacles on the right shows the minimum distance measured. When the car rear obstacle distance from the set value of the security warning, issued a hasty warning sound, alert the driver attention to the brakes. The obstacle detection system based on ultrasonic ranging system STC89C53RC microcontroller. By a simple external circuit and the occurrence and receiving ultrasonic circuit, microcontroller for the ultrasonic propagation time is calculated by using the software and hardware from its display. The system is small, measuring circuit, high precision, reflecting the speed and reliability.
热心网友
时间：2022-06-20 21:15
Based on SCM reverse impact-proof warning system design and realization
With the development of social economy, transportation instry is booming, the number of cars in sharply. Traffic congestion has become more and more serious, crash ongoing, caused the inevitable personal casualty and economic losses, in this kind of situation, design a kind of fast response, high reliability and more economical car reverse impact-proof warning system is imperative.
In automobile reverse impact-proof warning system is the most important aspect of detecting the rear of the car and the distance between the obstacles. Ultrasonic ranging method is one of the most common method of measuring distance. Ultrasonic ranging law is through continuous detection after ultrasonic launching echo what met obstacles, and reflected the measured when transmit and receive echo
