WO2010070360A1 - Dispositif de détection personnel - Google Patents

Dispositif de détection personnel Download PDF

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Publication number
WO2010070360A1
WO2010070360A1 PCT/GB2009/051751 GB2009051751W WO2010070360A1 WO 2010070360 A1 WO2010070360 A1 WO 2010070360A1 GB 2009051751 W GB2009051751 W GB 2009051751W WO 2010070360 A1 WO2010070360 A1 WO 2010070360A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection device
sensor
personal
smoke chamber
monitoring
Prior art date
Application number
PCT/GB2009/051751
Other languages
English (en)
Inventor
Ian Ackroyd
Original Assignee
Dinkeys Limited
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 Dinkeys Limited filed Critical Dinkeys Limited
Priority to GB1112399A priority Critical patent/GB2478686A/en
Publication of WO2010070360A1 publication Critical patent/WO2010070360A1/fr

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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
    • G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
    • G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/14—Central alarm receiver or annunciator arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/02—Mechanical
    • G01N2201/022—Casings
    • G01N2201/0221—Portable; cableless; compact; hand-held

Definitions

  • the present invention relates to a personal, portable detection device
  • the invention relates to a combined personal, portable detection device for detecting carbon-monoxide, carbon-dioxide, smoke and/or natural gas
  • Detectors such as these are generally in a fixed position in a building, and generally, are adapted to only detect one type of variable such as smoke level, CO level, CO 2 level and the like
  • detectors of the kind described above are not adapted to monitor the levels of the variables in all the areas where individuals are likely to be, especially since detectors are usually mounted in hallways or corridors where individuals are unlikely to spend a great deal of time
  • the fixed position of the detectors means that the change in a variable is monitored only at the position of the detector Therefore, in the case of a smoke detector for example, the smoke must reach the position of the detector in order for the detector to signal an alarm condition This often means that by the time the variable is detected by the detecting means, an individual may be in an area where the levels of the variable are much higher, leading to the variable not being detected in time to prevent any health risk to that individual
  • Detecting means such as those described above are only operable to detect a single variable Therefore, in order to monitor a number of variables, a number of separate detecting means are required This can result in an unsightly array of detecting means each for a different variable
  • a personal, portable detection device comprising at least one sensor, monitoring means adapted to monitor an output of the or each sensor, and signalling means to issue an alarm condition upon detection of a predetermined sensor output by the monitoring means
  • the personal, portable detection device is adapted to be carried on or by a person
  • the personal, portable detection device comprises a housing
  • the housing is a key fob
  • the device comprises one sensor
  • the device comprises two or more different sensors
  • the device comprises at least three sensors More preferably, the device comprises at least a smoke detector, a carbon dioxide detector and a carbon monoxide detector
  • Additional or alternative sensors may be present in the device Such additional sensors may comprise thermometers, natural gas detectors, UV light sensors, impact sensors, and the like
  • the personal, portable detection device comprises one or more interchangeable sensors
  • the interchangeable sensors may be selected from the above non-exhaustive list
  • the or each sensor is adapted to communicate an output to the monitoring means
  • the predetermined output of the or each sensor is the reaching, or exceeding, of a predetermined threshold level of the variable sensed by the or each sensor
  • the predetermined output of a carbon monoxide sensor may be the reaching, or exceeding, of a certain value in ppm (parts per million) of CO in an air sample analysed by the sensor
  • the signalling means preferably comprise an audible alarm
  • the signalling means further comprise visible signalling means
  • the signalling means comprise a vibration means
  • the audible alarm is generated by at least one sounder, more preferably, by at least one piezo sounder
  • the audible alarm is a short, repeating alarm or a continuous alarm More preferably, the audible alarm is operable to change between a short, repeating alarm and a continuous alarm to distinguish between different sensor outputs
  • the visible signalling means comprises one or more LEDs
  • one or more of the one or more LEDs are illuminated in an alarm condition
  • the visible signalling means is operable to indicate which of the or each sensor output was detected by the monitoring means as reaching a predetermined level
  • a different coloured LED is provided for each different sensor
  • the appropriately coloured LED is illuminated in an alarm condition
  • the vibration means comprise a vibration device operable to vibrate upon detection of a predetermined sensor output by the monitoring means
  • a smoke chamber for a personal, portable detection device operable to vibrate upon detection of a predetermined sensor output by the monitoring means
  • the smoke chamber is preferably adapted to fit in the personal, portable detection device according to the first aspect of the invention
  • the smoke chamber comprises a peripheral wall
  • the peripheral wall comprises a number of wall panels, preferably the peripheral wall comprises 10 wall panels
  • the smoke chamber comprises an IR (infra-red) LED (light emitting diode), more preferably a 3mm IR LED
  • the smoke chamber comprises a base section and a ceiling section
  • at least one of the base section and the ceiling section are integrated into the personal, portable detection device of the first aspect of the invention
  • a personal, portable detection device comprising at least one sensor, monitoring means for monitoring an output of the or each sensor, and signalling means adapted to issue an alarm condition upon detection by the monitoring means of a predetermined sensor output wherein at least one of the sensors is adapted to detect the level of oxygen in the surrounding air
  • the signalling means are adapted to issue an alarm condition upon detection of a reduced level of oxygen and/or a dangerously low level of oxygen by the monitoring means
  • the reduced level of oxygen and the dangerously low level of oxygen are in the region of, for example, approximately 17% and approximately 10%, respectively, in the surrounding air
  • a personal, portable detection device comprising at least one sensor, monitoring means for monitoring an output of the or each sensor, and interfacing means for interfacing with at least one remote system in response to the detection of a predetermined sensor output by the monitoring means
  • the remote system comprises a fixed-position system
  • the remote system may be a fire alarm system, carbon monoxide detection system, carbon dioxide detection system, air conditioning system, heating system, boiler, thermostat, air purification system, dehumidification system, or the like
  • the device is operable to interface with existing remote systems
  • the device may interface with specially-adapted, new remote systems
  • the interfacing means preferably comprise wireless internet connection means
  • the interfacing means comprise a Bluetooth (RTM) wireless connection means as appropriate
  • the interfacing means may comprise wireless network connection means
  • the interfacing means preferably transmit a signal to the or each remote system upon detection of a predetermined sensor output by the monitoring means
  • the transmitted signal causes the or each remote system to switch on or off, trigger an alarm condition or adjust a setting within the system
  • Figure 1 shows a schematic, perspective view of a personal, portable detection device
  • Figure 2 shows a schematic, perspective view of a top elevation of the device of Figure 1 ,
  • Figure 3 shows a plan view of a first side of the device with the casing removed
  • Figure 4 shows a plan view of a second side of the device with the casing removed
  • Figure 5 shows a schematic, perspective view of the device with first and second casings removed
  • Figure 6 shows schematic plan and side views of a smoke chamber contained within the device
  • a personal, portable detection device 2 comprises a housing 4 having first 8 and second 6 casings
  • the housing 4 comprises a first plurality of openings 10, 12 to allow air from the surrounding environment to move through the device 2 and into the sensors (as will be described below)
  • the housing 4 further comprises a second plurality of openings 14 to allow an audible signal emanating from signalling means (described below) within the device 2 to be heard clearly
  • a plurality of LEDs 16 is visible within the housing 4 of the device
  • the casings 6, 8 which make up the housing 4 of the device 2 are made from a hard plastics material which is able to withstand high impacts and has high abrasion resistance
  • the casings 6, 8 are bell-shaped This ensures that air flow through the device 2 is not blocked or restricted if the device 2 is placed upside down
  • the personal, portable detection device 2 further comprises a key loop 18 for receiving an attachment to a key ring Further, the device 2 is provided with a sliding power switch 20 and a push test switch 22 The switches 20, 22 are recessed within the casing 6,8 to prevent accidental use A number of feet 24 are provided on the second casing 6 of the device 2 to allow the device 2 to rest on a surface
  • a printed circuit board 26 is situated within the housing 4 of the personal, portable detection device 2
  • the printed circuit board 26 is provided with connections to the sliding power switch 20 and push test switch 22, as well as a plurality of sensors, monitoring and controlling means and signalling means
  • the printed circuit board 26 is also supplied with a power source in the form of batteries 28
  • the rear of the printed circuit board 26 is provided with spring contacts 56 to electrically connect the batteries 28 to the printed circuit board 26
  • the batteries 28 are located behind a battery cap 30 in the housing 4 of the device
  • the battery cap 30 comprises a transparent region (not shown) through which the batteries 28 are visible by the user
  • the printed circuit board 26 beneath the batteries 28 is coloured red such that, when there are no batteries 28 in the device 2, the user will see the red colour through the transparent region This red colouring provides a warning to the user of the absence of batteries
  • the sensors comprise a smoke detector 32, a carbon dioxide detector 34 and a carbon monoxide detector 36
  • the smoke detector 32 comprises a smoke chamber 42 as shown in figure 6
  • the smoke chamber 42 comprises a wall 44 having a plurality of inlets to allow air to enter the chamber 42
  • the wall 44 comprises ten wall panels 45 which each have a thickness of 0 8mm
  • the chamber 42 is substantially circular in cross section Within the walls 44 of the chamber 42 there is provided a 3mm infra-red LED light source 46 and an infra-red sensor 48
  • the infra-red sensor 48 is provided at an angle of approximately 30° to the light beam provided by the LED light source 46
  • Both the LED light source 46 and infra-red sensor 48 point radially towards the centre of the smoke chamber 42
  • the ceiling portion 49 of the smoke detector 32 is integrated into, and forms part of, the casing 8 of the device 2
  • the infra-red sensor 48 detects a known low level of infra-red light from the LED light source 46 When smoke particles enter the smoke chamber 42 through the inlets in the walls 44 of the chamber 42, light beams emanating from the LED light source 46 are reflected by the smoke particles and are deflected such that the infra-red sensor 48 detects the deflected light beams which results in a light level greater than the known low level of infra-red light
  • the carbon dioxide detector 34 is a sensor of the kind that is readily available from various suppliers This sensor 34 outputs an electronic signal to the monitoring means based on the concentration of carbon dioxide in the air being detected by the sensor 34
  • the carbon monoxide detector 36 is a sensor of the kind readily available from various suppliers
  • the sensor 36 outputs an electronic signal to the monitoring means based on the concentration of carbon monoxide in the air being detected by the sensor 36
  • the monitoring means (not shown) are contained within the printed circuit board 26 to monitor the outputs from the sensors 32, 34, 36
  • the monitoring means are programmed to send a signal to signalling means 16, 38 upon detection of a predetermined threshold value of one or more of the variables being met or exceeded.
  • the monitoring means are adapted to send a signal to the signalling means 16, 38, 40 upon detection of a predetermined level of smoke particles, indicative of a fire, being present in the air travelling through the device 2.
  • the monitoring means are adapted to send two different signals to the signalling means 16, 38, when a predetermined low threshold value and/or a pre-determined high threshold value of carbon dioxide is met or exceeded in the air passing through the device 2.
  • the predetermined threshold values are based on the concentration of, and time exposed to, the carbon monoxide. Table 1 shows the trigger levels.
  • the monitoring means are programmed to send two different signals to the signalling means 16, 38 upon detection of, firstly, a low threshold level of carbon dioxide being met or exceeded, and/or secondly, a high threshold level being met or exceeded, in the air travelling through the device 2.
  • the threshold levels are given in Table 2 below.
  • the low threshold level corresponds to a level of carbon dioxide which could cause drowsiness and, therefore, be a danger to a person whilst driving or operating machinery, for example This value corresponds to a concentration level of approximately 800 - 1000 ppm carbon monoxide in air
  • the high threshold level corresponds to a level of carbon dioxide being present in the air passing through the device which would be unsafe to and cause damage to the health of a person
  • This level corresponds to a concentration level of greater than approximately 5000ppm carbon dioxide in air
  • the signalling means 16, 38 are operable to indicate an alarm condition, as well as providing an indication of which variable, or sensor, led to the triggering of the alarm condition
  • a piezo sounder 38 provides the means for an audible alarm signal
  • the sounder 38 is electrically connected to the printed circuit board 26 Upon receipt of a signal from the monitoring means, the signalling means causes the piezo sounder 38 to emit an audible warning signal
  • the signalling means also comprise three LEDs 16 which are visible in the housing 4 of the device The LEDs 16 are all different colours, and each one corresponds to a specific sensor Upon receipt of the signal from the monitoring means, the signalling means cause the appropriately coloured LED 16 to light up according to which sensor 32, 34, 36 outputted the high level The visual signal, therefore, indicates the reason for the triggering of the alarm
  • the signalling means 16, 38 are operable to distinguish between the low carbon monoxide threshold level and high carbon monoxide threshold level being exceeded These distinguishing signals are indicated in Table 2 Upon the low threshold being exceeded, the audible alarm is sounded for three short blasts every 30 seconds Upon the high threshold being exceeded, the audible alarm is sounded continuously
  • Control of the power supply to the sensors 32, 34, 36, monitoring means and signalling means 16, 38, 40 on the printed circuit board 26 is provided by the sliding power switch 20
  • the power switch 20 is slidable between an ON and an OFF position In the ON position, the power supply from the batteries 28 is connected to the printed circuit board 26 to provide power to the sensors, monitoring means and signalling means In the OFF position, the power supply is disconnected from the printed circuit board 26
  • the push test switch 22 is to be pushed by a user to close a connection between the switch 22 and the monitoring and controlling means Upon closure of the connection between the push switch 22 and the monitoring and controlling means, the normal operation of the signalling means 16, 38 is overridden and the unit enters a test mode In this mode, a test alarm condition is signalled In this way, the operation of the signalling means 16, 38 for each of the sensors and the batteries 28, can be tested for a short period of time by the user The connection between the switch 22 and the monitoring and controlling means is broken, and therefore the signalling of an alarm condition is stopped as soon as the push switch 22 is released
  • the first casing 8 is provided with a plurality of plastic hooks 58 which clip into corresponding recesses 60 (as shown in Figures 3 and 4) in the second casing 6
  • This hook 58 and recess 60 arrangement provides a snap-fit connection between the first 8 and second 6 casings to hold the two casings 6, 8 securely together, thus forming the housing 4 of the device 2
  • the personal, portable detection device is turned on by a user by sliding the power switch from the OFF position to the ON position
  • the power supply is connected to the printed circuit board, sensors, monitoring means and signalling means Whilst turned on, the device continuously samples and analyses levels of smoke, carbon dioxide and carbon monoxide in the air passing through the device
  • the carbon dioxide sensor is recalibrated each time the device is turned on The recalibration of the sensor is achieved by assuming the carbon dioxide sensor is in normal air with a CO 2 level of between 350 and 450 ppm The detected level of the CO 2 in the air is then measured along with the temperature A compensation factor is applied based on the current temperature and the zero offset required to have a correct reading These values are used until the system is next calibrated
  • the monitoring means monitor the output from the analysis of the air performed by the sensors
  • the monitoring means are programmed with a predetermined set of threshold levels against which the sensor outputs are measured Upon detection of an output level from a sensor which meets or exceeds a threshold level for the corresponding variable, the monitoring means send a signal to the signalling means This signal contains information for the signalling means to indicate an alarm condition and to indicate from which of the sensors the output originated
  • the signalling means Upon receipt of the signal from the monitoring means, the signalling means cause an alarm condition to be indicated
  • the alarm condition is indicated by an audible signal and a visual signal
  • the signalling means are also operable to indicate a low battery condition upon receipt of a signal from the printed circuit board
  • the low battery signal comprises a single, audible beep every 8 seconds
  • the push test switch can be used to test whether the signalling means are working correctly This is done by pushing the test switch down towards the interior of the device When the switch has been pushed far enough, a connection is made between the power supply, test switch and signalling means and the signalling means indicate an alarm condition Such a connection is only made whilst the test switch is held down to maintain the connection The alarm condition indicated whilst the test switch is operated uses the sounder and all the LEDs Therefore, if no audible signal is heard and/or some or all of the LEDs are not illuminated, the user can determine which of the signalling means is not working correctly
  • test switch is also adapted to silence the audible alarm upon triggering of the signalling means due to the detection of high smoke, carbon dioxide and/or carbon monoxide levels in the air by the monitoring means
  • the personal, portable detection device described above may alternatively comprise additional or alternative sensors to those described above
  • the device may comprise a thermometer and monitoring means to detect changes in temperature, for example the meeting or exceeding of high and low temperature thresholds This would be useful in the workplace where guidelines give maximum and minimum temperatures for working in
  • the device may also comprise a UV sensor and monitoring means to detect when a user is exposed to unhealthy UV levels
  • the personal, portable detection device may be fitted with a wireless internet or network connection capability, such as Bluetooth® capability With such wireless capability, the personal, portable detection device could be used to transmit signals to a remote system, such as a fire alarm system, air conditioning system, heating system or boiler, air purification or dehumidification system, or the like, which is installed within a commercial (industrial and office), residential and/or public (schools, libraries, etc) building, upon detection of an output from a sensor within the device that meets or exceeds a predetermined threshold level
  • the signals transmitted could cause the appropriate system(s) to switch on or off, trigger an alarm condition or adjust a setting within the system
  • the device could transmit a signal across a wireless network or the internet to a fire alarm system in an industrial building upon detection of smoke particles in the air surrounding the device
  • the transmitted signal would cause an alarm condition in the fire alarm system, thus alerting people in the building to the smoke detection
  • the device of the invention has the capability to detect smoke particles in the air in areas that are not close to fixed detectors in the fire alarm system Therefore, using the system described above, people within the building can be warned of the smoke detection before the smoke particles reach a fixed detector
  • Wireless connectivity also provides the device with the capability to alert one or more emergency services, for example, the fire brigade, ambulance service or police, upon detection of a sensor output which exceeds a predetermined threshold level
  • one or more emergency services for example, the fire brigade, ambulance service or police
  • the device upon detection of smoke particles, the device could transmit a signal to the fire and ambulance services at the same time as transmitting a signal to the fire alarm system, thus alerting the detection to their attention early This early alerting of the emergency services could help to reduce the damage caused, and/or the number of casualties affected
  • the detection device described above can also be used to monitor levels of variables within vehicles, for example, cars, trains, aircraft, and the like
  • the device may interface with the control systems for the variable levels within the vehicle to maintain the air quality and temperature at a desired level
  • a motion sensor and/or GPS unit can be fitted within the device Such a sensor or unit would allow the location that a high level of a variable is detected to be determined In a device also comprising wireless connectivity, the position of an incident could then be transmitted to the remote system or emergency services
  • the personal, portable detection device can, further, be upgraded by adding sensors to the unit to increase the capability thereof
  • the personal, portable detection device of the present invention ensures that the personal safety and health of the user is protected
  • the user is alerted to the presence of fire, smoke, carbon monoxide, carbon dioxide, and possibly other variables, in his vicinity, which may be potentially harmful Therefore, the user can remove himself to safety
  • the interfacing of the personal, portable detection device with remote systems also allows the early detection of the presence of a potentially harmful condition to be alerted to other people and/or emergency services, or to be removed by altering a setting within the remote system

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

L'invention concerne un dispositif de détection personnel portatif (2). Le dispositif (2) comprend au moins un capteur (32,34,36), un moyen de contrôle conçu pour contrôler une sortie du capteur ou de chaque capteur, et un moyen de signalisation (16,38) pour produire une condition d'alarme en cas de détection d'une sortie de capteur prédéterminée par le moyen de contrôle. Le dispositif de détection (2) peut comprendre un moyen d'interfaçage pour l'interfaçage avec au moins un système distant en réponse à la détection d'une sortie de capteur prédéterminée par le moyen de contrôle. L'invention concerne également une chambre à fumée (42) pour le dispositif de détection personnel (2).
PCT/GB2009/051751 2008-12-19 2009-12-21 Dispositif de détection personnel WO2010070360A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1112399A GB2478686A (en) 2008-12-19 2009-12-21 Personal detection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0823122A GB0823122D0 (en) 2008-12-19 2008-12-19 Personal detection device
GB0823122.7 2008-12-19

Publications (1)

Publication Number Publication Date
WO2010070360A1 true WO2010070360A1 (fr) 2010-06-24

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ID=40343841

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/051751 WO2010070360A1 (fr) 2008-12-19 2009-12-21 Dispositif de détection personnel

Country Status (2)

Country Link
GB (2) GB0823122D0 (fr)
WO (1) WO2010070360A1 (fr)

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CN101881762A (zh) * 2010-07-06 2010-11-10 西安交通大学 一种基于无线传感器网络的大范围二氧化碳监测系统
GB2497322A (en) * 2011-12-07 2013-06-12 Bch Innovations Ltd Environmental sensor in wireless communication with a portable computing device
US8537020B2 (en) * 2008-12-23 2013-09-17 Honeywell International Inc. Visual indicator of gas sensor impairment
CN104459023A (zh) * 2013-09-13 2015-03-25 昆山市玉山镇仕龙设计工作室 二氧化碳超标警报器
EP2860715A1 (fr) * 2013-10-08 2015-04-15 Christoph Burghardt Procédé et agencement d'identification de concentrations de gaz en tant que dispositif d'alarme dans l'air
CN105445348A (zh) * 2015-12-03 2016-03-30 上海仪电科学仪器股份有限公司 一种便携式二氧化碳气敏电极
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IT201700055706A1 (it) * 2017-05-23 2018-11-23 Milano Politecnico Metodo e dispositivo indossabile per il controllo di inquinanti gassosi
GB2565120A (en) * 2017-08-02 2019-02-06 The Validation Centre Tvc Ltd A welding dosimeter
CN110097730A (zh) * 2019-05-13 2019-08-06 西南大学 一种工厂火灾报警装置
US10699547B2 (en) 2016-10-12 2020-06-30 Blackline Safety Corp. Portable personal monitor device and associated methods

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8537020B2 (en) * 2008-12-23 2013-09-17 Honeywell International Inc. Visual indicator of gas sensor impairment
CN101881762A (zh) * 2010-07-06 2010-11-10 西安交通大学 一种基于无线传感器网络的大范围二氧化碳监测系统
GB2497322A (en) * 2011-12-07 2013-06-12 Bch Innovations Ltd Environmental sensor in wireless communication with a portable computing device
CN104459023A (zh) * 2013-09-13 2015-03-25 昆山市玉山镇仕龙设计工作室 二氧化碳超标警报器
EP2860715A1 (fr) * 2013-10-08 2015-04-15 Christoph Burghardt Procédé et agencement d'identification de concentrations de gaz en tant que dispositif d'alarme dans l'air
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CN105445348A (zh) * 2015-12-03 2016-03-30 上海仪电科学仪器股份有限公司 一种便携式二氧化碳气敏电极
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IT201700055706A1 (it) * 2017-05-23 2018-11-23 Milano Politecnico Metodo e dispositivo indossabile per il controllo di inquinanti gassosi
WO2018215220A1 (fr) 2017-05-23 2018-11-29 Politecnico Di Milano Dispositif portatif pour commander des polluants gazeux
GB2565120A (en) * 2017-08-02 2019-02-06 The Validation Centre Tvc Ltd A welding dosimeter
CN110097730A (zh) * 2019-05-13 2019-08-06 西南大学 一种工厂火灾报警装置

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GB0823122D0 (en) 2009-01-28
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