Unlock instant, AI-driven research and patent intelligence for your innovation.

Laser ranging module for adc error compensation through the change of sampling time

A technology of laser distance measurement and sampling mode, which is applied in the directions of measuring devices, analog/digital conversion, electromagnetic wave re-radiation, etc., and can solve the problems of absolute distance deterioration

Active Publication Date: 2021-12-14
HEXAGON TECH CENT GMBH
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is the case, for example, if the start pulse has an amplitude in the medium modulation range and the stop pulse has an amplitude in the low amplitude range, where, as a result of INL-dominated shape distortion, for example, both The pulses are distorted differently and the absolute distance deteriorates

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Laser ranging module for adc error compensation through the change of sampling time
  • Laser ranging module for adc error compensation through the change of sampling time
  • Laser ranging module for adc error compensation through the change of sampling time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] Figure 1a and Figure 1b A pulsed time-of-flight principle such as is used in typical electro-optical distance measuring devices according to the prior art is exemplified.

[0066] Figure 1a A basic diagram of a prior art electro-optical distance measuring device 1 according to the pulse time-of-flight principle is shown. A transmitter 2 and a receiver 3 are arranged in the distance measuring device 1 . The transmitter 2 emits a pulse of light 4 which, after reflection or backscattering at a target (e.g., a cooperating target object such as a retroreflector 5 or a non-cooperating target object such as a natural surface), is again detected by the receiver 3 as Backscattered light pulse 4'. In general, continuously modulated transmit signals can also be used instead of light pulses.

[0067] Such as Figure 1b Schematically illustrated in , the distance depends on the time-of-flight T f is determined as the time difference between the moment of initiation of emissi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A laser ranging module that compensates for ADC errors through changes in sampling time. The invention relates to a ranging method and an electronic laser ranging module for fast signal detection using an analog-to-digital converter, in particular for devices configured especially as laser trackers, tachymeters, laser scanners, or profilers In distance measuring devices, where conversion errors occurring in the context of signal digitization (in particular ADC timing, gain and offset errors) are compensated by means of variations in sampling instants.

Description

technical field [0001] The invention relates to a ranging method and an electronic laser ranging module for fast signal detection using an analog-to-digital converter (ADC), in particular for ranging devices (e.g. for laser trackers, tachymeters, laser scanners , or profiler) where conversion errors occurring in the context of signal digitization (in particular timing, gain and offset errors of the ADC) are compensated by means of variations in sampling instants. Background technique [0002] Various principles and methods are known in the field of electronic and optoelectronic distance measurement. One method involves emitting pulses of electromagnetic radiation (such as, for example, a laser) at a target to be measured, and receiving echoes from the target as backscattering objects, where, for example, the pulse may be based on time-of-flight, shape, and / or phase , to determine the distance to the target to be measured. Such laser distance measuring devices have gained a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/4861G01S17/08G01S17/10G01S7/4865
CPCG01S7/4861G01S17/08G01S17/10G01S7/4865H03M1/0624
Inventor R·沃尔格南特S·贝斯特勒J·辛德林
Owner HEXAGON TECH CENT GMBH