Dynamic threshold timing circuit, lidar, and method for obtaining time information

A dynamic threshold and timing circuit technology, applied in the field of circuits, can solve the problems of unfavorable operation of the device heat generation system, large circuit power consumption and heat generation, and achieve low power consumption, dynamic calibration, and low power consumption.

Active Publication Date: 2021-02-02
HESAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The increase of circuit power consumption usually leads to high heat generation. For lidar applications, due to the accumulation of a large number of devices in a small space, the increase in device heat generation is extremely detrimental to system operation.

Method used

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  • Dynamic threshold timing circuit, lidar, and method for obtaining time information
  • Dynamic threshold timing circuit, lidar, and method for obtaining time information
  • Dynamic threshold timing circuit, lidar, and method for obtaining time information

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Embodiment Construction

[0060]In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can realize, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0061]In the description of the present invention, what needs to be understood is that the terms "中心", "vertical", "horizontal", "length", "width* #*, "Thickness", "上", "下", "Front", "Back", "左" , "右", "坚直", "Horizontal", "顶", "底", "内", "外", "clockwise", "反clockwise", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description The invention and simplified description do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific...

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Abstract

The present invention relates to a dynamic threshold timing circuit, comprising: a comparator, the comparator has a first input terminal, a second input terminal and an output terminal, the first input terminal can receive an external input signal, the second input terminal The terminal can receive the detection threshold; the time-to-digital converter, the time-to-digital converter is coupled to the output terminal of the comparator, to obtain the time information of the output signal of the comparator; the controller, the controller is configured to may receive the external input signal, generate the detection threshold according to the external input signal and provide the detection threshold to the second input terminal of the comparator, wherein the detection threshold and the noise in the external input signal relevant.

Description

Technical field[0001]The present invention generally relates to the field of circuit technology, and in particular to a dynamic threshold timing circuit, a laser radar including the same, and a method for collecting time information of an external input signal.Background technique[0002]Time-to-Digital Converter (TDC) is a measuring device or equipment that digitizes time information, and a timing circuit is a circuit that extracts time information from an analog signal to be measured. An analog signal carrying time information cannot be directly used as the input of TDC. The timing circuit needs to extract the time information from the signal, output the time signal carrying time information, and send it to TDC. Time information is usually carried by the signal edge of the level transition. The output of TDC is only the digital quantization result of the measured time signal, and other information such as amplitude and waveform other than the time information cannot be obtained.[000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/12
CPCH03M1/124
Inventor 王力威向少卿
Owner HESAI TECH CO LTD
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