Pulsed-light detection and ranging apparatus, system and method of detection and ranging of an object in a pulsed light detection and ranging system

A distance measuring device and pulsed light technology, which is applied in the field of pulsed light detection and ranging systems, can solve problems such as distance calculation system errors, achieve the effect of improving detection speed and reducing processing overhead

Pending Publication Date: 2019-10-18
MELEXIS TECH NV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, switching between algorithms leads to systematic errors in distance calculations

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  • Pulsed-light detection and ranging apparatus, system and method of detection and ranging of an object in a pulsed light detection and ranging system
  • Pulsed-light detection and ranging apparatus, system and method of detection and ranging of an object in a pulsed light detection and ranging system
  • Pulsed-light detection and ranging apparatus, system and method of detection and ranging of an object in a pulsed light detection and ranging system

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Embodiment Construction

[0035] Throughout the following description, the same reference numerals will be used to identify similar parts.

[0036] refer to figure 1 , the pulsed light detection and ranging device 100 is for example arranged within an environment to monitor a so-called scene 104 . A typical application for device 100 is a LIDAR system. Scene 104 includes low reflective objects 106 and highly reflective objects 108 .

[0037] Apparatus 100 includes detection and ranging circuitry 102, which includes processing resources, such as operably coupled to non-volatile memory, such as read only memory (ROM) 112, and volatile memory, such as random access memory (RAM) 114) of the microprocessor 110. An illumination source, for example pulsed optics or a light source 116 , such as a pulsed laser, is operatively coupled to a microprocessor 110 supporting a synchronization unit 117 . Microprocessor 110 is also operably coupled to an optical detection device, such as photodiode array 118, typica...

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Abstract

A pulsed-light detection and ranging apparatus comprises an optical detector arranged to generate, when in use, time-series data in response to an optical pulse incident thereupon. A processing resource is also provided and arranged to support a pulse analyser (132). The pulse analyser (132) is arranged to identify (134) an inflection point of a pulse described by the time-series data. The pulse analyser (132) is further arranged to calculate (138) a distance based upon determined inflection point relative to a time axis associated with the time-series data.

Description

technical field [0001] The invention relates to a pulsed light detection and ranging device, of the type such as to calculate the distance to an object. The invention also relates to a pulsed light detection and ranging system, of the type such as to calculate the distance to an object. The invention also relates to a method of detecting and ranging an object, of the type such as calculating the distance to the object. Background technique [0002] In so-called time-of-flight sensing systems and other systems, such as night vision systems, it is known to employ an illumination source in order to illuminate the surrounding environment, sometimes referred to as a "scene", within the illumination source's field of view. In this respect, so-called LIDAR (Light Detection and Ranging) systems are employed. One type of LIDAR illuminates a scene with pulses of light, and typically includes an illumination source, a detection device (such as a photodiode array), some optics, and a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/10G01S17/26G01S7/4865
CPCG01S17/10G01S7/4865G01S7/487G01S7/4861G01S17/42G01S17/26
Inventor A·凯斯洛夫
Owner MELEXIS TECH NV
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