JPS643566A - Instrument for measuring speed of moving object - Google Patents

Instrument for measuring speed of moving object

Info

Publication number
JPS643566A
JPS643566A JP62159415A JP15941587A JPS643566A JP S643566 A JPS643566 A JP S643566A JP 62159415 A JP62159415 A JP 62159415A JP 15941587 A JP15941587 A JP 15941587A JP S643566 A JPS643566 A JP S643566A
Authority
JP
Japan
Prior art keywords
camera
scanning
image
horizontal
horizontal scanning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62159415A
Other languages
Japanese (ja)
Inventor
Keiichi Nitta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
Original Assignee
Nikon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nikon Corp filed Critical Nikon Corp
Priority to JP62159415A priority Critical patent/JPS643566A/en
Publication of JPS643566A publication Critical patent/JPS643566A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To improve the accuracy of measuring the speed of a high-speed moving object by detecting the time from the start position of horizontal scanning by sampling of the image of the moving object to the scanning position of the object image at every two times of the continuous horizontal scanning. CONSTITUTION:A video camera 2 is disposed to the position where the moving object 1 passes. The camera outputs the video image by the horizontal and vertical scanning of the optical image to the image pickup plane of the object 1. The camera 2 is so installed that the moving direction of the object 1 is in parallel with the horizontal scanning direction of the image pickup plane of the camera 2. In addition, the object having a straight shape in the vertical scanning direction is used as the object. A time measuring instrument 3 applies the time tn detected from the start position of the horizontal scanning to the scanning position of the object to a signal computing element 4. A horizontal scanning period t0, the magnification 1/M of the camera 2 and the length Z0 in the horizontal direction of the image pickup plane are applied as constants from a constant setter 5 to the computing element 4 which computes the speed of the object 1. The measurement with the high accuracy is thus enabled and the speeds over a wide range are measurable.
JP62159415A 1987-06-26 1987-06-26 Instrument for measuring speed of moving object Pending JPS643566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62159415A JPS643566A (en) 1987-06-26 1987-06-26 Instrument for measuring speed of moving object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62159415A JPS643566A (en) 1987-06-26 1987-06-26 Instrument for measuring speed of moving object

Publications (1)

Publication Number Publication Date
JPS643566A true JPS643566A (en) 1989-01-09

Family

ID=15693247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62159415A Pending JPS643566A (en) 1987-06-26 1987-06-26 Instrument for measuring speed of moving object

Country Status (1)

Country Link
JP (1) JPS643566A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112462086A (en) * 2020-10-23 2021-03-09 宁波傲视智绘光电科技有限公司 Speed measuring method and device and readable storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112462086A (en) * 2020-10-23 2021-03-09 宁波傲视智绘光电科技有限公司 Speed measuring method and device and readable storage medium

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