GB1280473A - Apparatus for detecting objects - Google Patents

Apparatus for detecting objects

Info

Publication number
GB1280473A
GB1280473A GB2790069A GB2790069A GB1280473A GB 1280473 A GB1280473 A GB 1280473A GB 2790069 A GB2790069 A GB 2790069A GB 2790069 A GB2790069 A GB 2790069A GB 1280473 A GB1280473 A GB 1280473A
Authority
GB
United Kingdom
Prior art keywords
detector
give
detectors
output
conveyer
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.)
Expired
Application number
GB2790069A
Inventor
Alexander Duthie Mcleman
Robert Senior Andrew
Peter John Trigg
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.)
Stewarts and Lloyds Ltd
Original Assignee
Stewarts and Lloyds Ltd
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 Stewarts and Lloyds Ltd filed Critical Stewarts and Lloyds Ltd
Priority to FR6922320A priority Critical patent/FR2012280A1/en
Priority to DE19691933614 priority patent/DE1933614A1/en
Priority to LU59022D priority patent/LU59022A1/xx
Priority to US40195A priority patent/US3665202A/en
Publication of GB1280473A publication Critical patent/GB1280473A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Control Of Conveyors (AREA)

Abstract

1280473 Detecting presence of hot objects STEWARTS & LLOYDS Ltd 1 July 1969 [4 July 1968 2 June 1969] 32039/68 and 27900/69 Heading G1A Specification describes apparatus for detecting the presence and the position of hot steel bars 12 Fig. 1 on a conveyer 16 and comprising two infrared diode detectors 17, 18 which, by means of rotating mirrors 8, simultaneously scan across the conveyer in two parallel paths 10, 11. A bar at position (i) will give an output only from detector 18, one at position (ii) will give outputs from both detectors, and one at position (iii) will give an output only from detector 17. If only the trailing edge of a bar (i.e. position (i)) is to be detected, the case of a pulse output from detector 18 only may be detected by logic circuit 15. Apertures 2 and 3 in front of the detectors do not laterally define the scanning areas with great precision and to overcome this, the detector outputs may be gated by means of signals produced by a chopper 22, Fig. 3 interrupting the infrared radiation from source 23 to detector 24, the shutter rotating synchronously with mirror 8.
GB2790069A 1968-07-04 1968-07-04 Apparatus for detecting objects Expired GB1280473A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR6922320A FR2012280A1 (en) 1968-07-04 1969-07-02 Detector for length and speed of bars - leaving rolling mill
DE19691933614 DE1933614A1 (en) 1968-07-04 1969-07-02 Method and device for touching objects
LU59022D LU59022A1 (en) 1968-07-04 1969-07-03
US40195A US3665202A (en) 1969-06-02 1970-05-25 Apparatus for detecting objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3203968 1968-07-04

Publications (1)

Publication Number Publication Date
GB1280473A true GB1280473A (en) 1972-07-05

Family

ID=10332176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2790069A Expired GB1280473A (en) 1968-07-04 1968-07-04 Apparatus for detecting objects

Country Status (1)

Country Link
GB (1) GB1280473A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171513A (en) * 1985-02-19 1986-08-28 Atomic Energy Authority Uk A safety system for a laser-beam utilising facility
US5461474A (en) * 1993-07-29 1995-10-24 Canon Kabushiki Kaisha Inspection apparatus for detecting foreign matter on a surface to be inspected, and an exposure apparatus and a device manufacturing method using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171513A (en) * 1985-02-19 1986-08-28 Atomic Energy Authority Uk A safety system for a laser-beam utilising facility
GB2203539A (en) * 1985-02-19 1988-10-19 Atomic Energy Authority Uk Apparatus for monitoring infra-red emissions
GB2171513B (en) * 1985-02-19 1989-08-31 Atomic Energy Authority Uk Safety system for laser-utilising facilities
GB2203539B (en) * 1985-02-19 1989-08-31 Atomic Energy Authority Uk Apparatus for monitoring infra-red emissions
US5461474A (en) * 1993-07-29 1995-10-24 Canon Kabushiki Kaisha Inspection apparatus for detecting foreign matter on a surface to be inspected, and an exposure apparatus and a device manufacturing method using the same

Similar Documents

Publication Publication Date Title
US3781531A (en) Flaw detector system utilizing a laser scanner
GB1314786A (en) Data sensing system
GB1278363A (en) Detecting head for a counting system
GB1212388A (en) Improvements relating to scanning systems
GB1314002A (en) Method of detecting retroreflective material
ES402249A1 (en) Element position detector system
GB1018223A (en) Improvements in and relating to electric length-measuring apparatus
GB1213145A (en) Apparatus for the detection of flaws in a transparent material
US3527953A (en) Photoelectric line detector
GB1280473A (en) Apparatus for detecting objects
GB1339955A (en) Apparatus for detecting an object by reflection of radiation
GB1091334A (en) Apparatus for detecting faults in webs
GB1115681A (en) Optical fibre scanning device
GB1246756A (en) Measuring dimensions of objects
GB1399706A (en) Optical scanning device
GB1257271A (en)
GB1366369A (en) Detection of faults on surfaces
GB1338367A (en) Scanning light barrier
GB1232892A (en)
GB1497214A (en) Visibility measuring means
GB1063140A (en) Improvements in or relating to tool-setting gauges
IE38281L (en) Optical detection of an edge of a ribbon of glass
GB1132364A (en) Improvements relating to the contactless measurement of the speed of strip
SU1116310A1 (en) Device for contactless measuring of article diameter
GB1077985A (en) Apparatus for reading

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees