公开(公告)号：US20030133362A1

公开(公告)日：2003-07-17

申请号：US10325620

申请日：2002-12-20

Applicant: STMicroelectronics S.r.l.

Inventor： Luigi Fortuna ,  Alessandro Rizzo ,  Mattia Frasca ,  Marco Branciforte ,  Marco Bartolone

IPC: G01S015/00

CPC classification number: G01S7/523 ,  G01S7/537 ,  G01S15/102 ,  G01S15/931

Abstract: A system for detecting distances for vehicle and robotic applications includes a transducer for generating a transmission signal to be sent in the direction of an obstacle, and for obtaining a receiving signal corresponding to an echo produced by the reflection of the transmission signal off the obstacle. The transducer is driven by a chaos generator, such as a Chua's circuit. The system also includes a correlator for correlating the transmission signal and the receiving signal so that the distance between the obstacle and the transducer is identified by an instant at which the correlation assumes a high value. The transmission signal may be a square-wave signal selectively generated with one first frequency and one second frequency, and jumps between the two frequencies are determined by the instants of emission of the pulses generated by an analog type pulse generator driven by the chaos generator.

Abstract translation: 用于检测车辆和机器人应用的距离的系统包括用于产生要在障碍物的方向上发送的发送信号的换能器，并且用于获得对应于从障碍物反射发送信号产生的回波的接收信号。 传感器由混沌发生器驱动，如蔡氏电路。 该系统还包括用于使发送信号和接收信号相关的相关器，使得障碍物与换能器之间的距离由相关性呈现高值的瞬间识别。 传输信号可以是以一个第一频率和一个第二频率选择性地产生的方波信号，并且两个频率之间的跳跃由由由混沌发生器驱动的模拟型脉冲发生器产生的脉冲的发射时间确定。