Title:
DISTANCE MEASURING DEVICE
Document Type and Number:
Japanese Patent JP2021076492
Kind Code:
A
Abstract:
To improve the accuracy of distance measurement.SOLUTION: A distance measuring device 1 comprises an irradiation unit 2, a light-receiving array unit 3, and a signal processing unit 4. The light-receiving array unit 3 is constituted in such a manner that a plurality of light detectors 31 detecting light reflected from an object form one pixel. The signal processing unit 4 creates, on the basis of the detection result of the plurality of light detectors 31 forming a pixel, a one-pixel histogram that indicates a relationship between timing information representing an elapsed time from light irradiation timing and liquid quantity information representing the quantity of received light. The signal processing unit 4 creates a divided-pixel histogram for each of a plurality of divided regions into which the light-receiving plane of the pixel is divided. The signal processing unit 4 calculates an object distance for each of the plurality of divided regions, on the basis of a divided-pixel peak waveform that is a peak waveform in the divided-pixel histogram.SELECTED DRAWING: Figure 1
Inventors:
TAKASAO DAISUKE
Application Number:
JP2019203962A
Publication Date:
May 20, 2021
Filing Date:
November 11, 2019
Export Citation:
Assignee:
DENSO CORP
International Classes:
G01S17/89; G01C3/06
Domestic Patent References:
| JP2018179974A | 2018-11-15 | |||
| JP2016176750A | 2016-10-06 | |||
| JP2008033750A | 2008-02-14 | |||
| JP2019144065A | 2019-08-29 | |||
| JP2006322834A | 2006-11-30 | |||
| JP2020180941A | 2020-11-05 |
Foreign References:
| WO2018151211A1 | 2018-08-23 |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation