GB1461277A - Electronic devices for divers - Google Patents

Electronic devices for divers

Info

Publication number
GB1461277A
GB1461277A GB4888873A GB4888873A GB1461277A GB 1461277 A GB1461277 A GB 1461277A GB 4888873 A GB4888873 A GB 4888873A GB 4888873 A GB4888873 A GB 4888873A GB 1461277 A GB1461277 A GB 1461277A
Authority
GB
United Kingdom
Prior art keywords
depth
time
moirú
dive
variations
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
GB4888873A
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.)
Skinner Co Ltd E T
Original Assignee
Skinner Co Ltd E T
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 Skinner Co Ltd E T filed Critical Skinner Co Ltd E T
Priority to GB4888873A priority Critical patent/GB1461277A/en
Publication of GB1461277A publication Critical patent/GB1461277A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • G01D5/38—Forming the light into pulses by diffraction gratings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/32—Decompression arrangements; Exercise equipment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • G01D5/363—Direction discrimination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • G04F10/04—Apparatus for measuring unknown time intervals by electric means by counting pulses or half-cycles of an ac

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1461277 Depth measuring devices for divers E T SKINNER & CO Ltd 14 Jan 1975 [19 Oct 1973 15 Nov 1973] 48888/73 and 53101/73 Heading G1A In an electronic device for use by a diver for measuring the depth, or variations in depth of a dive, a pressure sensitive diaphragm 2 is connected to a pair of crossed diffraction gratings 4 so that relative movement causes a magnified movement in the MoirÚ fringes formed by the gratings 4. The gratings are illuminated by a lamp 5 and the relative movement of the MoirÚ fringes is sensed by two photo-cells 6 and 7. The output of one or the other of the photo-cells is fed to an "up-down" counter 8 in dependence on a condition sensing device (not shown) which examines the MoirÚ fringes to determine the relative movement and to tell if the depth is being increased or decreased. Thus the counter 8 is caused to count up or down in dependence upon the depth variations. The accumulated count is converted into a binary coded decimal by a readout device 9 which supplies an accumulating register 10 that supplies a display logic circuit 11 feeding a light emitting diode display 12. The components 8-11 are part of a greater integrated circuit powered by batteries 14 and supplied with pulses from an oscillator 15 to represent the passage of time. A key board 16 can be used to actuate an algorithm built into the circuit to cause the display to indicate the depth, or time underwater, or a function of the depth and the time. In a further embodiment Fig. 2 (not shown) a shift register is used instead of the accumulating register 10, thereby storing the data indicative of the variations in depth with the time. After the dive, the apparatus may then be plugged into a readout device which can operate a pen recorder to produce a graph of the depth of dive plotted against time.
GB4888873A 1973-10-19 1973-10-19 Electronic devices for divers Expired GB1461277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4888873A GB1461277A (en) 1973-10-19 1973-10-19 Electronic devices for divers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4888873A GB1461277A (en) 1973-10-19 1973-10-19 Electronic devices for divers
GB5310173 1973-11-15

Publications (1)

Publication Number Publication Date
GB1461277A true GB1461277A (en) 1977-01-13

Family

ID=26266350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4888873A Expired GB1461277A (en) 1973-10-19 1973-10-19 Electronic devices for divers

Country Status (1)

Country Link
GB (1) GB1461277A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983000670A1 (en) * 1981-08-27 1983-03-03 Hermann, Jürgen Device for indicating diving parameters
GB2223845A (en) * 1988-10-14 1990-04-18 Brian Arthur Evans Digital tyre pressure gauge
WO1996016320A1 (en) * 1994-11-18 1996-05-30 Helmut Baader Pressure sensor
EP1142783A1 (en) * 2000-04-07 2001-10-10 HTM SPORT S.p.A. Computer for scuba diving

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983000670A1 (en) * 1981-08-27 1983-03-03 Hermann, Jürgen Device for indicating diving parameters
EP0073499A1 (en) * 1981-08-27 1983-03-09 Divetronic AG Device for indicating the parameters of a dive
GB2223845A (en) * 1988-10-14 1990-04-18 Brian Arthur Evans Digital tyre pressure gauge
GB2223845B (en) * 1988-10-14 1992-10-28 Brian Arthur Evans Digital tyre pressure gauge
WO1996016320A1 (en) * 1994-11-18 1996-05-30 Helmut Baader Pressure sensor
EP1142783A1 (en) * 2000-04-07 2001-10-10 HTM SPORT S.p.A. Computer for scuba diving
US6526972B2 (en) 2000-04-07 2003-03-04 Htm Sport S.P.A. Device for providing information to a scuba diver

Similar Documents

Publication Publication Date Title
US4164816A (en) Electronic measuring tape
BE802440A (en) KEYBOARD DEVICE FOR GENERATING NUMERICALLY CODED DATA SIGNALS
GB1461277A (en) Electronic devices for divers
ES401600A1 (en) Electronic lock and key device
GB2047441B (en) Electronic timepiece
JPS5555279A (en) Electronic clock
JPS5647299A (en) Trouble detecting device of a press
GB1363175A (en) Voltage level indicator
ES2073984A2 (en) Electronic taximeter.
FR2411453A1 (en) Road vehicle speed detection system supplying photographic evidence - has electronic chronometer actuating camera, and produces photograph of vehicle with time, data and speed readings
JPS57125433A (en) Color display device
JPS56127268A (en) Picture processor
JPS52107870A (en) Electronic clock
Potts et al. An underwater event recorder for use in behavioural research
JPS52119037A (en) Memory device
JPS51132869A (en) Electronic clock
JPS52130667A (en) Digital display device of electronic watch
JPS5294030A (en) Bar code read device
JPS5329031A (en) Display unit
JPS57101962A (en) Electronic desk computer
KR910014685A (en) Electronic devices with depth gauge
JPS5345931A (en) Co-ordinate input device with display
JPS5412863A (en) Digital display type electronic watch
JPS52152116A (en) Information processing unit
FR2449387A1 (en) Diagnostic X=ray equipment rapid programming device - uses light diode matrix contacted by optical sensor to enter data in memory

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee