CA2041873A1 - Borehole camera monitoring system - Google Patents

Borehole camera monitoring system

Info

Publication number
CA2041873A1
CA2041873A1 CA 2041873 CA2041873A CA2041873A1 CA 2041873 A1 CA2041873 A1 CA 2041873A1 CA 2041873 CA2041873 CA 2041873 CA 2041873 A CA2041873 A CA 2041873A CA 2041873 A1 CA2041873 A1 CA 2041873A1
Authority
CA
Canada
Prior art keywords
camera
cable
head assembly
computer
borehole
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.)
Granted
Application number
CA 2041873
Other languages
French (fr)
Other versions
CA2041873C (en
Inventor
Alain Gendron
Guy Chevrette
Pierre Senecal
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.)
Noranda Inc
Original Assignee
Noranda Inc
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 Noranda Inc filed Critical Noranda Inc
Priority to CA 2041873 priority Critical patent/CA2041873C/en
Publication of CA2041873A1 publication Critical patent/CA2041873A1/en
Application granted granted Critical
Publication of CA2041873C publication Critical patent/CA2041873C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

The borehole camera monitoring system comprises a camera head assembly adapted to be lowered into a borehole by means of a cable and a control unit located above ground for generating a control signal for the operation of the camera.
The camera head assembly comprises a fixed portion and a rotary portion containing the camera and associated equipment for examining the wall of the borehole. The fixed portion of the camera head assembly comprises a micro-controller for controlling the operation of the camera, a position encoder for detecting the angular rotation of the camera with respect to the fixed portion of the camera head assembly and a communication interface including means for multiplexing the video signal generated by the camera with an information signal generated by the micro-controller for transmission over the cable and means for extracting the control signal generated by the computer and transmitted over the cable.
The control unit comprises, in addition to the above mentioned computer, a video monitor and a communication interface including means for extracting from the signal transmitted over the cable the video signal for the video monitor and the information signal for the computer and means for multiplexing the control signal of the computer for transmission over the cable. A depth counter is connected to the computer for detecting the depth of the camera head assembly from the upper edge of the borehole.
CA 2041873 1991-05-06 1991-05-06 Borehole camera monitoring system Expired - Fee Related CA2041873C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2041873 CA2041873C (en) 1991-05-06 1991-05-06 Borehole camera monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2041873 CA2041873C (en) 1991-05-06 1991-05-06 Borehole camera monitoring system

Publications (2)

Publication Number Publication Date
CA2041873A1 true CA2041873A1 (en) 1992-11-07
CA2041873C CA2041873C (en) 1998-02-03

Family

ID=4147548

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2041873 Expired - Fee Related CA2041873C (en) 1991-05-06 1991-05-06 Borehole camera monitoring system

Country Status (1)

Country Link
CA (1) CA2041873C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331153A (en) * 1992-02-14 1994-07-19 Noranda Inc. Gravity orientation device having an encoder and a rotatable shaft mounted in a cylindrical casing
CN111502633A (en) * 2020-03-20 2020-08-07 山东大学 In-hole camera device and method suitable for upward-inclined drilled hole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331153A (en) * 1992-02-14 1994-07-19 Noranda Inc. Gravity orientation device having an encoder and a rotatable shaft mounted in a cylindrical casing
CN111502633A (en) * 2020-03-20 2020-08-07 山东大学 In-hole camera device and method suitable for upward-inclined drilled hole
CN111502633B (en) * 2020-03-20 2024-03-15 山东大学 Device and method suitable for photographing in upward-inclined drilling hole

Also Published As

Publication number Publication date
CA2041873C (en) 1998-02-03

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed