公开(公告)号：US20160282451A1

公开(公告)日：2016-09-29

申请号：US15172922

申请日：2016-06-03

Applicant: Caterpillar Inc.

Inventor： Mark Hartman ,  Nathaniel W. Hart ,  Weston M. Taylor ,  Jeffrey L. Parker

IPC: G01S7/486 ,  G01S17/10

CPC classification number: G01S7/4868 ,  G01S7/497 ,  G01S17/10

Abstract: A Light-detection and ranging (LIDAR) system for controlling a bias voltage is provided. The LIDAR system includes a light source configured to emit light pulses and a light sensor configured to receive light pulses transmitted by the light source and scattered by an object. A voltage source is provided to apply the bias voltage to the light sensor. The LIDAR system further includes a sensor configured to generate a signal indicative of a temperature of the light sensor. The LIDAR system includes a controller communicably coupled to the light source, the light sensor, the voltage source and the sensor. The controller is configured to receive the signal indicative of the temperature of the light sensor. Further, the controller is configured to measure the bias voltage currently applied to the light sensor. The voltage source is regulated based at least on the temperature of the photodiode and the measured bias voltage currently applied to the light sensor.

Abstract translation: 提供了一种用于控制偏置电压的光检测和测距（LIDAR）系统。 LIDAR系统包括被配置为发射光脉冲的光源和被配置为接收由光源传输并被物体散射的光脉冲的光传感器。 提供电压源以将偏置电压施加到光传感器。 LIDAR系统还包括被配置为产生指示光传感器的温度的信号的传感器。 LIDAR系统包括可通信地耦合到光源，光传感器，电压源和传感器的控制器。 控制器被配置为接收指示光传感器的温度的信号。 此外，控制器被配置为测量当前施加到光传感器的偏置电压。 至少基于光电二极管的温度和当前施加到光传感器的测量的偏置电压来调节电压源。

公开(公告)号：US20190056504A1

公开(公告)日：2019-02-21

申请号：US15682072

申请日：2017-08-21

Applicant: Caterpillar Inc.

Inventor： Mark E. Hartman ,  Weston Taylor ,  Nathaniel W. Hart ,  Thomas Joseph Houchin

IPC: G01S17/93 ,  G01S17/89 ,  G01S17/42 ,  G01S7/48 ,  G01S7/486

Abstract: A system and method for controlling movement of a machine or a portion of the machine. The method comprises processing a waveform based on detected reflected light and a derivative of the waveform. The waveform includes a return. The method further comprises classifying the return as a phantom target or a non-amorphous target based on the result of the processing, and controlling movement of the machine or a portion of the machine based on the result of the classifying the return.

公开(公告)号：US10852438B2

公开(公告)日：2020-12-01

申请号：US15682072

申请日：2017-08-21

Applicant: Caterpillar Inc.

Inventor： Mark E. Hartman ,  Weston Taylor ,  Nathaniel W. Hart ,  Thomas Joseph Houchin

IPC: G01S17/00 ,  G01S17/931 ,  G01S17/89 ,  G01S17/42 ,  G01S7/48 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/95

Abstract: A system and method for controlling movement of a machine or a portion of the machine. The method comprises processing a waveform based on detected reflected light and a derivative of the waveform. The waveform includes a return. The method further comprises classifying the return as a phantom target or a non-amorphous target based on the result of the processing, and controlling movement of the machine or a portion of the machine based on the result of the classifying the return.