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。

公开(公告)号：US20020154677A1

公开(公告)日：2002-10-24

申请号：US10042776

申请日：2002-01-08

Applicant: STMicroelectronics S.r.l.

Inventor： Luigi Occhipinti ,  Luigi Fortuna ,  Alessandro Rizzo ,  Mattia Frasca

IPC: H04B007/216 ,  H04L027/00 ,  H04L027/30 ,  H04B015/00 ,  H04B001/713 ,  H04B001/707 ,  H04B001/69 ,  H04K001/00

CPC classification number: H04L27/001

Abstract: A chaotic signal generator includes a set of elements connected together for generating chaotic signals. The connection scheme may correspond to the circuit generally referred to as Chua's circuit, particularly when implemented as a cellular neural network. Interposed in the connection scheme is at least one switch, such as a MOS transistor. Opening and closing of the switch causes variation in the chaotic dynamics of the generated signals. A command signal applied to the switch may correspond to a modulating signal for transmission on a channel, such as a high noise channel. The modulating signal may be a binary signal, and the command signal may be a switching signal having a frequency that increases or decreases depending on the logic level of the binary signal.

Abstract translation: 混沌信号发生器包括连接在一起以产生混沌信号的一组元件。 连接方案可以对应于通常称为蔡氏电路的电路，特别是当被实现为细胞神经网络时。 在连接方案中插入至少一个开关，例如MOS晶体管。 开关的打开和关闭会导致产生的信号的混沌动力学变化。 施加到开关的命令信号可以对应于用于在诸如高噪声信道的信道上传输的调制信号。 调制信号可以是二进制信号，并且命令信号可以是具有根据二进制信号的逻辑电平而增加或减小的频率的开关信号。