GB2331363A - Gas detector worn on wrist - Google Patents

Gas detector worn on wrist Download PDF

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Publication number
GB2331363A
GB2331363A GB9803625A GB9803625A GB2331363A GB 2331363 A GB2331363 A GB 2331363A GB 9803625 A GB9803625 A GB 9803625A GB 9803625 A GB9803625 A GB 9803625A GB 2331363 A GB2331363 A GB 2331363A
Authority
GB
United Kingdom
Prior art keywords
gas detector
casing
wrist
gas
display panel
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.)
Withdrawn
Application number
GB9803625A
Other versions
GB9803625D0 (en
Inventor
Haruhiko Kondo
Junichi Koyano
Masahide Kitamura
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.)
Riken Keiki KK
Original Assignee
Riken Keiki KK
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 Riken Keiki KK filed Critical Riken Keiki KK
Publication of GB9803625D0 publication Critical patent/GB9803625D0/en
Publication of GB2331363A publication Critical patent/GB2331363A/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electric Clocks (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

A gas detector has a casing 3 held on the wrist by a band 2. The casing has a cylindrical bore holding at least one sensor 8,9 in position, a display panel 4, power switch 5 and function selection switches 6,7 on it's surface.

Description

2331363 Portable Gas Detector This invention relates to a portable gas
detector carried on the clothing for the measurement gas concentration in environments, and more particularly to the structure of the casing thereof.
When work is done in environments where poisonous gas can be produced or oxygen deficiency can occur, it is necessary to measure the concentration of such gas or oxygen regularly. Various types of portable gas detectors to answer this need, comprising a gas sensor, display, and signal processor contained in a small case that can be placed in a pocket or fixed thereon by means of a clip, have been proposed.
These conventional detectors, however, have caused interruption of work because they must be taken out of the pocket or remove the click when the worker wants to see the gas concentration on the display or manipulate the switch or other parts of the detector.
The object of this invention, which has been made the problem described above, is to provide a portable gas detector that determines gas concentration by manipulation similar to that of a wristwatch.
A portable gas detector according to this invention comprises a casing that can be fastened to a wrist by means of a band, the casing having cylindrical bores to hold at least one sensor at right angles to the band and a display panel and operating switches.
The portable gas detector of this invention just described permits reading the kind and concentration of gas, time and other data with ease, without removing from the clothing, and protects the sensor from damage that might be caused by collision with other objects. In zhe accompanying drawings:1 is a perspective view showing a preferred of this invention. 2 is a top view of the casing of the same Fi g. embodiment Fig. embodiment.
Fig. 3 is a side elevation showing the right side of the casing of the same,embodiment.
Fig. 4 is a top view of the same embodiment displaying the measured data. Preferred Embodiment of the Invention Now an embodiment of this invention will be described in the following.
Fig. 1 shows an embodiment of this invention. A main body 1 comprises a casing 3 adapted to be fastened to a wrist by means of a band 2, the surface of the casing 3 being divided into a central zone containing a display panel 4 to 2 show at least gas concentration and time at a time, an upper zone (shown in the upper part of the figure) containing sensors 8 and 9 extending parallel to the axis of the wrist and perpendicular to the band 2, and a lower zone (shown in the lower part of the figure) containing a power switch 5 and function selection switches 6 and 7.
The casing 3 is horizontally split into a main case 3a and a top cover 3b. The main case 3a is surrounded by sealing materials 10 and 11 and has bores 12 and 13 to fasten the sensors in place on both sides thereof, as shown in Fig. 2. A circuit board 14 holding a signal processing unit to process signals from the sensors 8 and 9, a time signal generating unit, a memory for trend display, a display unit 15 and a display driver to drive the display unit 15 is mounted in the center. The bottom of the main case is configured to match the roundness of the wrist, as shown in Fig. 3.
The top cover 3b is shaped substantially like the main case 3a. Ridges 16 and 17 rising slightly above the surface of the display panel 4 are provided on both sides of the display panel 4 for protecting the display panel from damage. Frames 18 and 19 are provided above the display panel 4 to affix adhesive seals to show the kind of gases to be detected.
When the sensors 8 and 9 are mounted in the cylindrical bores formed by the main case 3a and the top cover 3b, the plug pins thereon fit into the socket holes in circuit boards 3 and 21 and thereby establish connection with the circuit board 14. When frames.12 and 23 having gas intakes are fastened to the casing 3 in this condition, the senso rs 8 and 9 are fastened to the casing 3. Reference numerals 24 and 26 denote power conduction patterns and 27 an alarm generator.
When the detector is fastened to the wrist by means of the band 2 so that the power switch 5 and function selection switch 6 are close to the body, the person carrying the detector can look squarely at the information given on the display panel 4 by bending his arm as when looking at the time on a wristwatch. The power switch 5 and function selection switches 6 and 7 on the other side permits easy display switching, power on-off and other operations.
The display panel 4 indicates the kind of gas whose concentration is measured, such as Oxygen, at the left of the top, the current gas concentration, such as 19.6 %, at the right of the top, and a line graph to show the trend of gas concentration, residual battery charge, and current time, such as 10:58, from left to right, in the bottom, as shown in Fig. 4. Indication of time, in addition to the information of the gas, eliminates the need to use a wristwatch.
Even if something hits the detector during work, the relatively fragile sensors 8 and 9 are safeguarded against damage by the upper part of the arm where it is mounted.
Although the embodiment described above has two sensors, 4 only one sensor may be mounted by with a cover.
cl osing one cylindrical bore

Claims (1)

  1. Claims (1) A portable gas detector comprising a casing adapted to be
    fastened to a wrist by means of a band, the casing having a cylindrical bore to hold at least one sensor in a position perpendicular to the band and a surface provided with a display panel and operation switches.
    (2) The gas detector according to claim 1, in which said cylindrical bore and operation switches are provided in the upper and lower zones of the casing mounted on the wrist.
    (3) The gas detector according to claim 1, in which the casing is horizontally split into two shell-like members.
    (4) The gas detector according to claim 1, in which the display panel has means to indicate gas concentration and time.
    (5) A gas detector substantially as described with reference to the accompanying drawings.
    6
GB9803625A 1997-11-14 1998-02-20 Gas detector worn on wrist Withdrawn GB2331363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1997010629U JP3051687U (en) 1997-11-14 1997-11-14 Portable gas detector

Publications (2)

Publication Number Publication Date
GB9803625D0 GB9803625D0 (en) 1998-04-15
GB2331363A true GB2331363A (en) 1999-05-19

Family

ID=11755523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9803625A Withdrawn GB2331363A (en) 1997-11-14 1998-02-20 Gas detector worn on wrist

Country Status (3)

Country Link
JP (1) JP3051687U (en)
DE (1) DE29803392U1 (en)
GB (1) GB2331363A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001086260A1 (en) * 2000-05-10 2001-11-15 Medair Ab Portable gas sensor based on spectral analysis
EP1197753A2 (en) * 2000-10-10 2002-04-17 Riken Keiki Co., Ltd. Portable gas detector and its cradle
EP1293946A2 (en) * 2001-09-17 2003-03-19 Riken Keiki Co., Ltd. Portable gas alarm device
CH711415A1 (en) * 2015-08-13 2017-02-15 Take Off Diffusion S A A gas measuring device incorporated in a watch.
WO2017161533A1 (en) * 2016-03-24 2017-09-28 Honeywell International Inc. Casing for an electronic device
CN108709963A (en) * 2018-08-10 2018-10-26 镇江市南方工矿器材有限公司 A kind of portable methane detector
CN110596315A (en) * 2019-09-20 2019-12-20 徐州智瑞工程机械有限公司 Air detector suitable for engineering uses

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7034677B2 (en) * 2002-07-19 2006-04-25 Smiths Detection Inc. Non-specific sensor array detectors
CN108445165A (en) * 2018-05-29 2018-08-24 德清县德沃工业设备安装有限公司 A kind of Portable multiple-gas survey meter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129099A1 (en) * 1991-09-02 1993-03-04 Maren Dr Schoon Personal meter for registering hazardous environments e.g. noxious gases - includes sensors which register environmental influences and produce corresp. electrical signals, electrons to process signals and display
US5325704A (en) * 1993-11-22 1994-07-05 The United States Of America As Represented By The Secretary Of The Army Surface acoustic wave (SAW) chemical multi-sensor array
DE19545506A1 (en) * 1995-12-06 1996-05-15 Pitt Fischer Miniaturised electric gas warning and life rescue device for personal use e.g carried on wrist
DE29609530U1 (en) * 1996-05-30 1996-07-25 Weggenmann, Michael, 67663 Kaiserslautern Device for detecting the ozone concentration
JPH08254579A (en) * 1995-03-17 1996-10-01 Seiko Epson Corp Wrist-worn environment data measuring device
JPH095459A (en) * 1995-06-15 1997-01-10 Citizen Watch Co Ltd Electronic wrist watch with humidity sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129099A1 (en) * 1991-09-02 1993-03-04 Maren Dr Schoon Personal meter for registering hazardous environments e.g. noxious gases - includes sensors which register environmental influences and produce corresp. electrical signals, electrons to process signals and display
US5325704A (en) * 1993-11-22 1994-07-05 The United States Of America As Represented By The Secretary Of The Army Surface acoustic wave (SAW) chemical multi-sensor array
JPH08254579A (en) * 1995-03-17 1996-10-01 Seiko Epson Corp Wrist-worn environment data measuring device
JPH095459A (en) * 1995-06-15 1997-01-10 Citizen Watch Co Ltd Electronic wrist watch with humidity sensor
DE19545506A1 (en) * 1995-12-06 1996-05-15 Pitt Fischer Miniaturised electric gas warning and life rescue device for personal use e.g carried on wrist
DE29609530U1 (en) * 1996-05-30 1996-07-25 Weggenmann, Michael, 67663 Kaiserslautern Device for detecting the ozone concentration

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
Chemical Abstract No. AN 126:33622 & JP 08254579 A2 *
WPI Accession No. 96-240436/199625 & DE 19545506 A1 *
WPI Accession No. 96-343307/199635 & DE 29609530 U1 *
WPI Accession No. 97-122463/199712 & JP 09005459 A *
WPI Accession No.85-251367/198541 & FR 002560378 A *
WPI Accession No.93-077726/199310 & DE 004129099 A1 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001086260A1 (en) * 2000-05-10 2001-11-15 Medair Ab Portable gas sensor based on spectral analysis
EP1197753A2 (en) * 2000-10-10 2002-04-17 Riken Keiki Co., Ltd. Portable gas detector and its cradle
EP1197753A3 (en) * 2000-10-10 2004-01-02 Riken Keiki Co., Ltd. Portable gas detector and its cradle
EP1293946A2 (en) * 2001-09-17 2003-03-19 Riken Keiki Co., Ltd. Portable gas alarm device
EP1293946A3 (en) * 2001-09-17 2003-09-17 Riken Keiki Co., Ltd. Portable gas alarm device
US6744373B2 (en) * 2001-09-17 2004-06-01 Riken Keiki Co., Ltd. Portable gas alarm device
AU784136B2 (en) * 2001-09-17 2006-02-09 Riken Keiki Co., Ltd. Portable gas alarm device
CN100426334C (en) * 2001-09-17 2008-10-15 理研计器株式会社 portable gas alarm
CH711415A1 (en) * 2015-08-13 2017-02-15 Take Off Diffusion S A A gas measuring device incorporated in a watch.
WO2017025791A1 (en) * 2015-08-13 2017-02-16 Take Off Diffusion S.A. Gas measurement device incorporated into a watch
CN108139376A (en) * 2015-08-13 2018-06-08 提克奥夫迪富申股份有限公司 The gas measurement device being attached in wrist-watch
RU2731859C2 (en) * 2015-08-13 2020-09-08 Тейк Офф Диффьюжн С.А. Gas measuring device built in clock
US10955397B2 (en) 2015-08-13 2021-03-23 Take Off Diffusion S.A. Gas measurement device incorporated into a watch
WO2017161533A1 (en) * 2016-03-24 2017-09-28 Honeywell International Inc. Casing for an electronic device
CN108709963A (en) * 2018-08-10 2018-10-26 镇江市南方工矿器材有限公司 A kind of portable methane detector
CN110596315A (en) * 2019-09-20 2019-12-20 徐州智瑞工程机械有限公司 Air detector suitable for engineering uses

Also Published As

Publication number Publication date
GB9803625D0 (en) 1998-04-15
DE29803392U1 (en) 1998-05-14
JP3051687U (en) 1998-09-02

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)