AU2020102097A4 - NIBT- Fire Detection : FIRE DETECTION AND NOTIFICATION USING IOT BASED TECHNOLOGY - Google Patents

NIBT- Fire Detection : FIRE DETECTION AND NOTIFICATION USING IOT BASED TECHNOLOGY Download PDF

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AU2020102097A4
AU2020102097A4 AU2020102097A AU2020102097A AU2020102097A4 AU 2020102097 A4 AU2020102097 A4 AU 2020102097A4 AU 2020102097 A AU2020102097 A AU 2020102097A AU 2020102097 A AU2020102097 A AU 2020102097A AU 2020102097 A4 AU2020102097 A4 AU 2020102097A4
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professor
smoke
fire
control panel
alarm
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AU2020102097A
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K. Ramesh Babu
Surbhi Gupta
Priyanka Kaushal
Padmavathi Kora
Neeraj Mohan
Padmalaya Nayak
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Professor Dr K Ramesh Babu
Professor Dr Padmalaya Nayak
Professor Dr Padmavathi Kora
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Professor Dr K Ramesh Babu
Professor Dr Padmalaya Nayak
Professor Dr Padmavathi Kora
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/10Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18Status alarms
    • G08B21/182Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/002Generating a prealarm to the central station
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/009Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01Alarm 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
    • G08B25/10Alarm 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
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B27/00Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00Audible signalling systems; Audible personal calling systems
    • G08B3/10Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • GPHYSICS
    • G16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16YINFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y30/00IoT infrastructure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • GPHYSICS
    • G16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16YINFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y40/00IoT characterised by the purpose of the information processing
    • G16Y40/10Detection; Monitoring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/18Self-organising networks, e.g. ad-hoc networks or sensor networks

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electromagnetism (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)

Abstract

Patent Titel: NIBT- Fire Detection: FIRE DETECTION AND NOTIFICATION USING IOT BASED TECHNOLOGY ABSTRACT Our Invention "NIBT- Fire Detection " is a system is provided that includes a sub-base station, base station and main control station of a security system having an IoT- Baser and wireless transceiver a processor of the base station that periodically transmits a beacon under a 6LowPan/IoT protocol defining an information transfer superframe having a plurality of time division multiple access (TDMA) slots. The Invented technology a remotely either switch-based located devices each with a sound transducer and an IoT based, wireless transceiver that exchanges messages with the base station within the TDMA slots of the superframe, self-design frame, and a respective method and processor within each of the of remotely located devices that determine a sound activation pattern and a location of a multicast slot within the superframe from the beacon detects an activation message within the multicast slot and activates the sound transducer based upon the location of the multicast slot in accordance with the sound activation pattern. The invented technology the sensors may be monitored by a control panel in the event that one of the sensors is activated the control panel may activate a local audible alarm to warn occupants in the area, location, distance of the threat. The invented technology mans the control panel may also send an alarm message to a central monitoring station and a portable device, such as key fob may be used to send emergency alerts (e.g., panic alarms, medical alerts, police, etc.) to the control panel and also to send commands to the control panel. Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) TOTAL NO OF SHEET: 12 NO OF FIG.12 PANERL S0 1 PNE Tehont l El Nowims p FIG 1 I ABLCK IARA O ASEURIY YSEMINACORDNEHEEIH

Description

Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) TOTAL NO OF SHEET: 12 NO OF FIG.12
PANERL S01
PNE
Tehont l El
Nowims p
FIG 1 IARA I ABLCK O ASEURIY YSEMINACORDNEHEEIH
Editorial Note 2020102097 There is only nineteen pages of the description
Australian Government IP Australia Innovation Patent Australia Patent Title: NIBT- Fire Detection: FIRE DETECTION AND NOTIFICATION USING IOT BASED TECHNOLOGY. Name and Address of the Patents (s)
Dr. Padmalaya Nayak (Professor) Address-1: Gokaraju Rangaraju Institute of Engineering and Technology Bachupally, Kukatpally, Hyderabad-500 090, Telangana, India. Address-2: Flat No. 409, Block A, West Metro Apartment, Chandanagar Friends Colony, Chandanagar, Hyderabad- 500 050, Telangana, India. Dr. K. Ramesh Babu (Professor) Address -1: Vidya Jyoti Institute of Engineering and Technology, Aziznagar Gate, Chilkur Balaji Road, Hyderabad- 500 075, Telangana, India. Address-2: H.No: 1-87/A, Bazar Street, Irala (Md), Chittoor (Dt)- 517130, Andhra Pradesh, India. Dr. Surbhi Gupta (Associate Professor) Address-1: Gokaraju Rangaraju Institute of Engineering and Technology Bachupally, Kukatpally, Hyderabad-500 090, Telangana, India. Address-2: HNo 20, Gulmohar Complex, sec 125, Mohali, Punjab, India. Dr. Neeraj Mohan (Assistant Professor) Address-1: IKG Punjab Technical University, Mohali Campus-I, Industrial Area Phase 7, Mohali, Punjab, India. Address-2: House No. 838, Phase 2, Mohali Punjab, India. Dr. Priyanka Kaushal (Associate Professor) Address-1: Chandigarh Engineering College, Landran, Mohali, Punjab, India. Address-2: House No. 838, Phase 2, Mohali Punjab, India. Dr. Padmavathi Kora (Professor) Address: Gokaraju Rangaraju Institute of Engineering and Technology Bachupally, Kukatpally, Hyderabad-500 090, Telangana, India. Complete Specification: Australian Government
FIELD OF THE INVENTION Our Invention " NIBT- Fire Detection" is related to fire detection and notification using iot based technology and also the fire alarm system in which a receiver receives the information.
BACKGROUND OF THE INVENTION
The stems are known to detect threats within secured areas. Threats may be based upon the occurrence of any of a number of different events that represent a risk to human safety or security or a risk to assets. For example, a fire may represent a threat to human occupants of a secured area not only because of the possibility of burns but also because of the possibility of death due to smoke inhalation.
The presence of unauthorized intruders within a secured area may also represent a threat in the case where the intruder may be a burglar intent on the theft of assets. However, a burglar could also be a threat to the safety of human occupants who interfere with the theft.
Security systems are typically based upon the use of one or more sensors that detect a specific threat within the area. The sensors may be fixed devices and/or mobiles devices such as a FOB. For example, fire, smoke and/or intrusion detectors may be distributed throughout a secured area in order to mitigate damage through the early detection of fire or intrusion. The sensors can be supervised or unsupervised.
In most cases, the sensors may be monitored by a control panel. In the event that one of the sensors is activated, the control panel may activate a local audible alarm to warn occupants in the area of the threat. The control panel may also send an alarm message to a central monitoring station. A portable device, such as key fob may be used to send emergency alerts (e.g., panic alarms, medical alerts, police, etc.) to the control panel and also to send commands (e.g., arm, disarm, etc.) to the control panel. The control panel may also include a keypad and an audible siren.
Security systems may cover numerous zones and include a number of different types of sensors and warning devices. In order to reduce costs and accommodate the different devices, the control panel and sensors may be connected via a wireless interface.
However, a security system using wireless sensors may be difficult to set up. Accordingly, a need exists for better methods of establishing and maintaining contact between a control panel and each of the sensors in a wireless security system.
PRIOR ART SEARCH There has been proposed a variety of fire alarm systems utilizing a plurality of smoke detectors to be installed in different locations for monitoring the smoke density indicative of fire presence or absence in each location. Such systems have been generally designed to produce an alarm when any one of the smoke detectors sees a serious smoke density. However, in these systems, only the smoke density is utilized as a criterion for determining fire presence or absence as well as a fixed reference smoke density is utilized as the criterion, which frequently results in a false fire detection as in the case when the smoke detector or detectors are installed in those rooms where there is frequent smoking or use of cooking appliances.
To make matters worse, in the case that the smoke detector is adapted to operate fire prevention equipment such as a fire door, fire extinguisher and smoke ejector upon the detection of smoke density exceeding the reference density, the false detection of fire will require restoring the equipment to its initial condition. This actuation of the fire equipment by mistake or due to false fire detection is most disadvantageous when occurring at night. But unfortunately, in the prior art there is no effective scheme for preventing the malfunction at night other than disconnecting the operation of the system at night, which would therefore be no more effective for true fire occurrence at night and be very dangerous.
US4593273A*1984-03-161986-06-03Narcisse Bernadine OOut-of-range personnel monitor and alarm. US5193216A*1990-06-011993-03-09Motorola, Inc.Detecting out of range in response to a loss of signal and a history of approaching out of range prior to the loss of signal.. US5684790A *1994-07-221997-11-04Mitsubishi Denki Kabushiki KaishaMobile communication system. US6356771B1 *1998-07-102002-03-12Ericsson, Inc.Radio communications system with adaptive polarization. US20050195088A12004-03-042005-09-08Solak David M.RF smoke sensing system with integrated smoke/heat sensing christmas ornament transmitter. US20060265195A1*2002-10-082006-11-23Woodard Jon ACombination alarm device with enhanced wireless notification and position location features. US20070268884A12006-05-162007-11-22Honeywell International Inc.Integrated infrastructure for coexistence of WI-FI networks with other networks. US20070279242A1 *2006-06-062007-12-06Honeywell International, Inc.Methods and systems for controlling directional sounders for route guidance. US20070296575A1 *2006-04-292007-12-27Trex Enterprises Corp.Disaster alert device, system and method. US4254414A *1979-03-221981-03-03The United States Of America As Represented By The Secretary Of The NavyProcessor-aided fire detector. US4308430A *1979-11-141981-12-29Gte Products Corp.Apparatus for signalling system. US4388616A*1980-03-191983-06-14Hochiki CorporationFire detection system with programmed sensitivity changes. US4447801A *1980-09-061984-05-08Yamaha Hatsudoki Kabushiki KaishaTrouble shooting method of vehicles.
US4451822A *1980-09-171984-05-29Societe Nationale Industrielle AerospatialeDevice for automatically checking a plurality of electric indicator lights.
OBJECTIVES OF THE INVENTION
1. The objective of the invention is to a system is provided that includes a sub-base station, base station and main control station of a security system having an IoT Baser and wireless transceiver a processor of the base station that periodically transmits a beacon under a 6LowPan/IoT protocol defining an information transfer superframe having a plurality of time division multiple access (TDMA) slots. 2. The other objective of the invention is to the Invented technology a remotely either switch-based located devices each with a sound transducer and an IoT based, wireless transceiver that exchanges messages with the base station within the TDMA slots of the superframe, self-design frame, and a respective method and processor within each of the of remotely located devices that determine a sound activation pattern and a location of a multicast slot within the superframe from the beacon detects an activation message within the multicast slot and activates the sound transducer based upon the location of the multicast slot in accordance with the sound activation pattern. 3. The other objective of the invention is to the invented technology the sensors may be monitored by a control panel in the event that one of the sensors is activated the control panel may activate a local audible alarm to warn occupants in the area, location, distance of the threat. 4. The other objective of the invention is to the invented technology mans the control panel may also send an alarm message to a central monitoring station and a portable device, such as key fob may be used to send emergency alerts (e.g., panic alarms, medical alerts, police, etc.) to the control panel and also to send commands to the control panel. The invention is to wherein the processor of the base station transmits the activation message and the sound activation pattern in the beacon with a multicast short address or as a 6LowPAN based multicast message within a predetermined one of the plurality of TDMA slots of the information transfer super frame. 5. The other objective of the invention is to wherein the respective processor of each of the plurality of remotely located devices activates the sound transducer of the respective one of the plurality of remotely located devices synchronously with the sound transducer of each of the plurality of remotely located devices. The invention is to wherein at some of the plurality of remotely located devices comprise a combustion detector and also the invention is to wherein the respective processor of each of the at least some of the plurality of remotely located devices monitors the combustion detector of the respective one of the plurality of remotely located devices for indication of a fire and sends a fire alarm message to the base station.
6. The other objective of the invention is to wherein the processor of the base station detects the fire alarm message and sends the activation message to each of the plurality of remotely located devices to activate the sound transducer of the respective one of the plurality of remotely located devices and also the invention is to wherein the combustion detector comprises one of a smoke detector and a carbon monoxide detector. The invention is to wherein the sound activation pattern comprises a first sound activation pattern for detection of smoke and a second sound activation pattern for detection of carbon monoxide. 7. The other objective of the invention is to including a timer and timer responsive sensitivity shifting means which responds to the input from said timer for varying the sensitivity of the sytem against the smoke density signal transmitted from at least one of the smoke detectors for determination of fire presence at said fire judging means, such sensitivity shifting resulting from the shifting of at least one of the reference density level and reference time period for each smoke density signal from said smoke detectors. 8. The other objective of the invention is to the invention is to wherein one or more of the smoke detectors are operatively associated with fire prevention equipment such as fire shutters, fire extinguishers and smoke ejectors each of which is to be actuated upon the determination of fire presence by said fire judging means in the location where the associated smoke detector is installed; and wherein said receiver further includes associate sensitivity shifting means, responsive to the instructions entered at an input device on the receiver designating specific smoke detectors as associated with the fire prevention equipment, for descreasing the sensitivity of the system against the smoke density signal transmitted from each smoke detector associated with said fire prevention equipment relative to that against the smoke density signal transmitted from each smoke detector having no operational relation to the fire prevention equipment. 9. The other objective of the invention is to further including pre-alarm means for issuing a pre-alarm signal when at least one of (a) the smoke density from any one of the selected smoke detectors exceeds a sub-reference density level which is lower than said reference density level and at the same time such smoke density lasts over a predetermined time period, and (b) when the time periods in each of which said smoke density exceeds said reference level total more than a predetermined value, occurs. The invention is to including ANDed fire alarm means which actuates said alarm means to issue the alarm signal only when said fire judging means determines fire presence for the respective smoke density signals transmitted from all of the smoke detectors forming an AND combination, and the smoke detectors forming said AND combination being designated by the instruction from an input device such as a keyboard provided on the receiver.
SUMMARY OF THE INVENTION
The invention eliminates the above shortcomings and disadvantages and to provides an effective and useful fire alarm system available in different conditions. A fire alarm system in accordance with the present invention comprises: a receiver or central controller unit to which a plurality of smoke detectors are connected through a data transmission line to be installed in different remote locations. Each smoke detector measures the density of smoke in its corresponding location as analog data and transmits a smoke density digital signal indicative of the smoke density to the receiver. Included in the receiver is fire judging means which responds to the individual smoke density signals from the various smoke detectors for determining fire presence and fire location in such a manner that it identifies the presence of fire with respect to each smoke detector only when the smoke density detected by that smoke detector exceeds a reference density level and at the same time when such smoke density lasts over a reference time period.
On the side of the receiver, there is provided selection means by which said reference smoke density can be selected among a plurality of different predetermined density levels and by which said reference time period can be selected among a plurality of predetermined time periods of different values. Alarm means is incorporated in the system for issuing an alarm signal in response to the above determination of fire presence. With this arrangement of adopting the smoke density together with the time period over which the smoke density of significant level lasts as the criterion for determining fire presence, more reliable detection of fire presence can be effectuated. In addition, both the reference smoke density and reference time period can be selected from the plurality of predetermined smoke density levels and from the plurality of predetermined time period values, respectively, whereby a suitable or proper criterion which is the combination of the smoke density with the time period can be set for successfully monitoring the locations or rooms of different conditions.
The invention to provide a fire alarm system which is reliable and can be easily adapted for monitoring locations of different conditions. In a preferred of the present invention, fire responsive sensitivity shifting means is employed for adding extra performance to the above system. The fire responsive sensitivity shifting means comes into operation, upon the determination of fire presence in any one of the discrete locations by said fire judging means, for automatically increasing the sensitivity of the system against the density signals from the smoke detectors in other locations in determination of fire presence in the other locations by shifting either or both of the density and time period references for each of the smoke density signals from the smoke detectors. The receiver is ready for early detection of the progress and spread of fires or the direction of additional fires so as to assure rapid fire fighting, enabling personnel in charge of the fire to promptly take steps for checking the spread of fires as soon as possible and to maintain the damage at minimum.
The invention is to provide a fire alarm system capable of pursuing promptly the spread of fires in an effective manner as to check the spread of fires. A further advantageous feature attained in the present invention resides in the employment of a timer in combination with timer responsive sensitivity shifting means. The timer responsive sensitivity shifting means is designed to shift the sensitivity of the system against the smoke density signal transmitted from the smoke detectors by shifting either or both of said smoke density and time period references upon receiving the input from the timer. The functional relationship between the timer and the timer responsive sensitivity shifting means is such that said sensitivity is set to be lower in daytime where there may be frequent smoking or the use of cooking appliances than at night when there is no such smoke source. This prevents the system from false alarms due to smoking or cooking in daytime, while retaining a reliable fire detection at night.
The invention to provide a fire alarm system which can be automatically set to be in effective operating conditions during daytime and nighttime without relying upon annoying manipulation by the user. One or more of said smoke detectors can be operatively associated with fire prevention equipments such as fire shutters, fire extinguishers and smoke ejectors. The fire prevention equipments can be actuated when said fire judging means determines the presence of fires in locations where the associated smoke detectors is installed. The present invention can also care for such fire prevention equipment and has means for properly actuating the equipment in response to the determination of the presence of a fire.
For this purpose, said receiver includes associate sensitivity shifting means which decreases the sensitivity of the system to the smoke density signals transmitted from smoke detectors directly related to said fire prevention equipment as opposed to the smoke density signals from smoke detectors not directly related to the fire prevention equipment. The above automated decrease in the sensitivity takes effect in accordance with the instruction at an input device such as a keyboard provided on the receiver assigning one or more of the smoke detectors as associated with the fire prevention equipments. This arrangement ensures that the fire prevention equipment is less susceptible to a premature action which would result a false alarm due to smoking or the like.
The invention to provide a fire alarm system which is capable of being programmed to cooperate with the fire prevention equipment so as to prevent the premature actuation of the fire prevention equipments. For precautionary purpose, pre-alarm means is incorporated in the system for issuing a pre-alarm signal. When the smoke density from any one of the smoke detectors exceeds a sub-reference level which is lower than said reference level and such smoke density lasts over another predetermined time period, or when the time periods in each of which the smoke density from any one of the smoke detectors exceeds said reference smoke density total more than a certain predetermined value, the pre-alarm means responds to issue a pre-alarm or precautionary signal for early warning of fire. Thus, the pre-alarm means can monitor the outbreak of fire at an initial stage which can be determined by the smoke density being continuously above a lower level, or by the smoke density increasing intermittently above a higher level. This enables the system to early and accurately detect fires without fail, which is a still more object of the present invention.
The invention, there are disclosed further unique and useful arrangements for the fire alarm system. One is the introduction of ANDed fire alarm means which actuates said alarm means to produce the alarm signal only when said fire judging means determines fire presence for the respective smoke density signals transmitted from all of the smoke detectors forming an AND combination. The smoke detectors forming said AND combination are manually designated by the instruction at the input device provided on the receiver. The other is the introduction of priority fire alarm means which cooperates with more than two of said smoke detectors forming an AND/OR combination in which one or more of the smoke detectors are designated as superior ones and others are designated as inferior ones.
Said priority fire alarm means causes the alarm means to issue the alarm signal preferentially for the superior smoke detectors and secondarily for inferior smoke detectors. That is, the alarm signal is issued when said fire judging means determines fire presence either for the smoke density signal transmitted from any one of superior smoke detectors or for the respective smoke density signals transmitted from all of said inferior smoke detectors. The superior and inferior smoke detectors can be designated by instructions at the input device on the receiver. With this arrangement, the system can acknowledge the preference of the smoke detectors and their locations in fire detection and therefore can be well adapted for the use to monitor the locations or rooms of different conditions simply by manipulating the input device.
The invention to provide a fire alarm system which can be flexibly adapted to the actual situations in an effective manner as to detect the presence of fires. Other features of the present invention contemplates self-compensating capacity advantageous of the smoke detectors employed in the system. The smoke detectors in the system are of photoelectric type comprising a light source and a photo-sensor defining therebetween a path for smoke particles so that the photo-sensor produces a corresponding output representative of the amount of smoke particles entered in the light path pass. Accordingly, there can occur undesirable fluctuations of the output due to the deterioration of light source, dust spreading over the light source and/or photo-sensor, and other possible factors.
For excluding the above undesirable fluctuations from the consideration in deciding the true smoke density, standard level adjusting means is included in each smoke detector. Based on the acknowledgement that the photo-sensor produces the output at such a level that is equal to a density level representing the amount of the true smoke particles plus an instant zero standard level which is the output of the photo-sensor at the instant condition where there is substantially no smoke particle and should therefore vary with time, said standard level adjusting means is designed to determine and store an initial zero standard level of the output from said photo-sensor and to calculate the difference between the initial zero standard level and the aged zero standard level by comparison therebetween such that it can compensate that difference for allowing the photo-sensor to produce the output at a level representative of the density of true smoke particles each time the detection is made. Consequently, self-compensating capacity or self-adjusting of the output from the smoke sensor can be attained in the smoke sensor to assure reliable detection of fire presence.
Also included in each smoke sensor is malfunction detecting means which produces a malfunction signal indicating that the smoke sensor is no longer available when said standard level adjusting means acknowledges that the difference between the initial and aged standard levels exceeds a preselected value, by which the user can promptly attend to repairing or replacing the bad detectors.
BRIEF DESCRIPTION OF THE DIAGRAM
FIG. 1: is a block diagram of a security system in accordance herewith.
FIG. 2: is a depicts a super frame that may be used by the system of FIG. 1.
FIG. 3: is a depicts a wireless connection diagram between sensors and the control panel ofFIG.1.
FIG. 4: is a depicts a set of temporal patterns that may be used by the system of FIG. 1.
FIG. 5: is a schematic block diagram showing the function of each etector of intelligent type employed in the above system.
FIG. 6: is a schematic block diagram showing the function of a receiver employed in the above system.
FIG. 7: is a schematic diagram in somewhat concrete representation of the part of the above receiver.
FIG. 8: composed of FIGS. 8A to 8E, shows a flow diagram illustrating the operational sequence of the above system.
DESCRIPTION OF THE INVENTION
FIG. 1: is a block diagram of a security system 10 shown generally in accordance with an illustrated embodiment. Included within the security system may be one or more remotely located sensing devices (sensors) 12, 14 that monitor a secured area 16 for threats. The sensors may each include a detector 13 based upon any of a number of different sensing technologies. For example, one or more of the sensors may be fire, smoke or gas detectors. Some other of the sensors may be intrusion detectors. The sensors may also be provided with respective audible or visual alerting devices 15 that alert human occupants to danger. In a more general sense, the term "remotely located device" may also be used herein to generically refer to a remotely located sensing or to a similar device with a sounder but without a detector that merely operates to warn occupants within the secured area of threats. The remotely located devices may also include other wireless devices such as key fobs or keypads.
The sensors may be monitored for activation by a control panel 18 containing a radio or gateway. The control panel may be located within the secured area as shown in FIG. 1 or may be located remotely from the secured area. Upon activation of one of the sensors, the control panel may send an alarm message to a central monitoring station 20. The alarm message may include an identifier of the security system (e.g., account number, address, etc.), an identifier of the type of sensor, a system or zone identifier of the sensor and a time of activation of the sensor.
The central monitoring station may respond by summoning the appropriate help. For example, if the sensor is determined to be a fire sensor, then the central monitoring station may summon a local fire department. On the other hand, if the sensor is identified to be an intrusion sensor, then the central monitoring station may summon the police. All of the remotely located devices may be coupled to the control panel via a wireless interface. In this regard, a radio frequency (rf) transceiver 22, 48 within the control panel and each of the remotely located devices may together form a portion of a wireless interface that allows each of the remotely located devices to exchange messages with the control panel.
The security system may also include one or more wireless fobs 24 and/or wireless keypads 24 that are used to control a state of the security system (e.g., armed, disarmed, armed away, etc.). Each of the fobs may also include a user interface (e.g., pushbuttons, and indicator LEDs) and a wireless rf transceiver that allows each fob to exchange control messages with the control panel. Key pads may also include a user interface (e.g., keyboard and display and a wireless rf transceiver that allows each key pad to exchange control messages with the control panel. Also included within the secured area may be one or more portable wireless devices (e.g., iPhones, Android devices, etc.) 26. The portable device 26 may exchange data with one or more other devices 28 through the Internet 30 under an appropriate format (e.g., TCP/IP, etc.).
The portable wireless devices 26 may exchange signals through the Internet via one or more WiFi transceivers 42 located within the secured area. The WiFi transceivers may be coupled to a local Internet service provider via a home router 46 and a hardwired connection between the control panel and local Internet service. Included within the control panel, the sensors, the fob and portable wireless devices is control circuitry that may include one or more processor apparatus (processors) 32, 34, each operating under control of one or more computer programs loaded from a non-transitory computer readable medium (memory) 40. As used herein, reference to a step performed by a computer program is also reference to the processor that executed that step.
Included within the control panel may be one or more communication processors that define 44 a super frame for communication between the control panel, the sensors, fobs and portable wireless devices. The super frame may be defined within a frame file 44 by a number of time division multiple access (TDMA) slots that re-occur over a predetermined time period. At least some of the slots may be reserved for use by the sensors and/or fobs under a 6LowPan/IPv6/IoT protocol. At least some other of the slots may be reserved for use by the portable wireless devices under an IEEE802.11 or WiFi protocol. FIG. 1 shows two transceivers 22, 42 (one for the 6LowPan/IPv6/Iot protocol and one for the IEEE802.11 protocol).
FIG. 2: depicts an example of the super frame 100 used within the system of FIG. 1. The superframe is multidisciplinary because it supports standards such as IEEE802.15.4, 6LowPan and also facilitates coexistence with other systems such as IEEE802.11 and ZigBee bases systems. As shown, the super frame includes a slot 102 for a beacon, a first set of slots 104, 106, 108, 110 reserved for the exchange of messages between the sensors and the control panel and between the fob and control panel under the IEEE 802.15.4 and 6LowPAN protocol. A second set of slots 112, 114 is reserved for the exchange of messages between the portable wireless devices and the Internet under a WiFi protocol.
The frame may be embodied as a number of time thresholds distributed across the sensors and coordinators that identify the locations of various markers within the super frame. For example, the slot 102 may be identified by a starting time (i.e., zero seconds) and an ending time (e.g., 5 milliseconds). Similarly, the starting and ending times of each of the first and second sets of slots may be defined by their offset from the start of the super frame. In addition, the frame file may also include an identifier of the type of device allowed to use each slot as well as an indicator of the type of message that may be transmitted in any slot.
The beacon identifies a starting point of the super frame and incorporates a number of data fields defined and populated by a beacon processor. The data fields of the beacon may include a first field for frame information and one or more control slots. Each device (e.g., sensors, fobs, etc.) in the system of FIG. 1 has a short address and an IPv6 (6LowPan) address and a MAC identifier (MAC ID). The addressing system facilitates accessing of the sensors and fobs by any other IPv6 compatible device as described in various Internet of Things (IoT) publications. This allows the sensors to be arranged by respective processors into star or tree networks as shown in FIG. 3, but not into a mesh network.
The status of the control panel (e.g., armed, disarmed, trouble, etc.) is carried as part of the beacon payload. Also, if required, a detailed indicator of panel status may be carried within respective slots under the 6LowPAN/802.15.4 protocols.
The control slots of the beacon may be used by a message processor of the control panel to send request messages from the control panel to end devices (e.g., sensors, fobs, etc.) using a unicast, multicast, or broadcast format based upon the IEEE802.15.4 addresses of the end devices. One type of message transmitted within the control slots is a One-Go/All Go message that is received and processed by each remotely located device and where the audible and/or visual alerting device of each remotely located device is activated simultaneously in response to an alarm event or message received from one of the sensors.
Any of a number of different types of devices may be incorporated into the system as sensors. The devices may be enrolled into the system via a manual enrollment or by a downloader based enrollment mode supported by an enrollment processor. The frame file may be downloaded to the sensors and fobs during commissioning or at the start of each super frame within one of the control slots.
Within the first set of slots of the super frame, a first portion 106 is reserved for alarm, status and supervision messages between the control panel and sensors. As alarms, status and supervision messages have limited data size, an IEEE802.15.4 packet format is used by a corresponding packet processor to optimize the airtime of these messages. This protocol supports the star or tree topology needed to accommodate scenarios that demand a larger range. In general, network information from the control panel is based upon a dynamic PAN-ID and a 802.15.4 channel number for single channel operation. Sensors and/or fobs conforming with this format may enroll with the control panel automatically and immediately after activation. End device commissioning of each sensor may be based upon a common secret message encryption key and end device unique MAC-ID.
Sensors may arrange themselves into the star or tree topology including a PAN coordinator, repeater and one or more end devices based upon this information. Packet exchanges between parent and child devices may occur using one or more slots of portion 104, 106, 108, 110 and not 112 and not 114. DNA profile transmissions (i.e., the sensor identifies what it is) and configuration transactions between coordinator and end devices may be used to facilitate the arranging of these devices into the star or tree topology. For end devices that are too far from the control panel, a coordinator may forward the beacon. In this case, the coordinator operates as a low power repeater system with dynamic end device wake-up and synchronization.
Alarms, status and supervisory messages to the control panel may result in bi-directional communication between the control panel and end devices. Secured encrypted communication over the air for each message may be accomplished using network keys. Alarm messages from a sensor to the control panel may be accomplished via one of the slots of the second portion 106. In this case, the activated sensor may wake-up upon the occurrence of the event (e.g., fire, intrusion, etc.). An alarm processor within the sensor may detect the event, compose an alarm message, synchronize with its superframe beacon, identify a slot based upon the frame file and transmit the alarm message at a corresponding location within the super frame. Each slot of the TDMA super frame may include sufficient time for transmission of an encrypted packet plus enough time for a MAC level ACK message from the parent.
If a sensor does not receive an ACK message within a slot of the first portion 106, then the alarm processor of the sensor may resend the alarm message under a carrier sense multiple access and collision avoidance CSMA/CA algorithm or mechanism (CSMA/CA algorithm/mechanism). In this case, the activated sensor may select a slot within one of the portions 104, 108 by first attempting to sense other users. If no other user is detected, the sensor may retransmit the alarm message to the control panel within the selected slot.
WiFi devices may operate in one or both of slot portions 112, 114. A strobe to devices operating under this protocol may be sent based upon slot availability at the end of the super frame. Alternatively, WiFi devices may synchronize via hardwired signals. Turning now to the remotely located devices 12, 14, in specific, different types of alarms may require different audible and/or visual alerts based upon the type of threat present within the secured area. For example, remotely located devices (e.g., smoke detectors, CO detectors, sounders, etc.) which are spread across the secured area in a typical sensor network should synchronize their alerting devices 15 (e.g., sounders) so that when one of the sounders is activated by a signal from one type of sensor, all of the remaining remotely located devices having the same type of sensor (i.e., detector 13) and its sounder (i.e., alerting device 15) should join the sounding pattern with the same phase and pattern.
The cadence is specified, and recommended by the National Fire Protection Association (NFPA). For example, the NFPA recommends a Smoke Alarm Temporal 3 Activation Signal in NFPA 72, 2010 Edition A.29.3.5 and a Carbon Monoxide Alarm Temporal 4 Activation Signal in NFPA 720, 2010 Edition 5.8.6.5.1 as shown in FIG. 4. However, the NFPA fails to provide any way of synchronizing the cadences among many sounding devices. For example, wireless sensors using CSMA/CA will remain completely unsychronized during operation. This is because each of the sensors independently sleeps and wakes up and are therefore not synchronized. Even if they can be synchronized via the exchange of an appropriate set of packets, there will be latencies associated with packet transmission and reception that may exceed NFPA requirements.
The systems will have different combinations of smoke and CO sensors in a network. However, there is no reference mechanism to synchronize the different types of sensors for different temporal patterns. In addition, when single level and multi-level repeaters are added into the network to increase the range of devices, the repeaters introduce latencies that exacerbate the problem of synchronism.
Under the illustrated embodiment, synchronization of the remotely located devices (e.g., smoke detectors, CO detectors, sounders, etc.) is accomplished via the system described above based upon use of the 6LowPan/IPv6 protocol. In addition, the MAC layer follows the IEEE802.15.4 standard on top of which a socket based UDP/IPv6 based network layer resides for IoT based communication. This allows each of the remotely located devices to have a unique IPv6 address and to follow the 6LowPan standard for low power wireless sensor networks. All of the remotely located devices, including the 6LowPan/IPv6 enabled repeaters are time-synchronized using a PAN coordinator. The PAN coordinator generates beacons at regular intervals so that all of the remotely located devices can sleep, wake-up and synchronize to a common beacon. The beacon operates to indicate the synchronizing temporal pattern that is unique at least for alarms originating from a smoke sensor and for a CO sensor.
The beacon may be divided into a number of different portions with each portion directed to a particular type (address) of remotely located device. The specific portion directs each type of remotely located device to a specific slot in the super frame. The remotely located device may retrieve the specific pattern from the slot. Stated in another way, the multicast 6LowPan/IPv6 address will be notified in the super frame at a specific slot location offset from the beacon as to the particular pattern to be used. The sensor types that support only that multicast IPv6 address will respond by activating their sounders at the specific pattern as indicated in the synchronizing beacon.
Each remotely located device may have a hardware timer. As the timings are handled using the hardware timer specific to the baseband controller and there is an external high accurate crystal oscillator for each sensor, the synchronizing timings and sounder activation phases will be highly accurate. When there are multiple levels of repeaters in the system, as each repeater synchronizes with its parent and the timing offset is accurate, this synchronization will avoid any phase offset between sensors connected to the PAN coordinator and the sensors connected to the highest depth repeater in the tree network.
The above system offers a number of advantages over prior devices. First the system provides a single platform solution to individually address smoke sensor, CO sensor and sounders so as to participate in the one-go/all-go concept of audible activation. Second the concept can be easily enhanced to accommodate other types of sensors with different temporal patterns. The one-go/all-go control mechanism based upon 6LowPan/IPv6 multicast addresses can be easily expanded so that any IoT enabled device can participate.
These concepts are easily adapted to home networks, so that whenever there is a smoke or CO alarm, the control panel and/or sounders can annunciate the alarm with a pre recorded voice. The one-go/all-go feature can be suppressed by sending a command from a mobile phone to the security panel. If there are other remotely located devices within the home which are IoT enabled (e.g., door locks) and have sounders, they can even guide people in case of emergency to use specific doors. For example, if there is a fire in a garage at night and the owner is sleeping, a 6LowPan/IPv6 enabled lighting system can be switched on automatically to help the owner vacate the premises safely.
The system includes a base station of a security system having a wireless transceiver, a processor of the base station that periodically transmits a beacon under a 6LowPan/IoT protocol defining an information transfer super frame having a plurality of time division multiple access (TDMA) slots, a plurality of remotely located devices, each with a sound transducer and a wireless transceiver that exchanges messages with the base station within the TDMA slots of the super frame and a respective processor within each of the plurality of remotely located devices that determines a sound activation pattern and a location of a multicast slot within the super frame from the beacon, detects an activation message within the multicast slot and activates the sounder transducer based upon the location of the multicast slot in accordance with the sound activation pattern.
FIG. 5: each of said intelligent smoke detector 5 and 6 is composed of a smoke detecting unit 21 and a signal processing unit 22 responsible for the intelligent operation. Included in the smoke detecting unit 21 is a combination light source 23a and photo-sensor 23b which define the smoke detector to be of photoelectric detection type and are disposed within a detecting head 23 defining therein a smoke chamber or light diffusion area 23c in which smoke particles are allowed to enter for detection of smoke density. The light from the light source 23a is diffused or reflected from the smoke particles present in the smoke chamber 23c so as be received in the photo-sensor 23b which responds to produce an output representative of the amount of smoke particles or smoke density.
The output from the photo-sensor 23b is fed through a level adjusting circuit 24 where it is processed to correctly represent true smoke density. The output of the level adjusting circuit 23b is fed to said signal processing unit 22 through a level output circuit 26. Said level adjusting circuit 24 is for offsetting undesirable fluctuation of the output level from the photo-sensor 23b which may result from the deterioration of the light source 23a and photo-sensor 23b, and other possible factors such as dust in the photoelectric system. For this purpose, said level adjusting circuit 24 stores an initial zero standard level which is the output level from the photo-sensor 23b at the initial condition where there is no substantial smoke particle and reads an aged zero standard level which is the output level from the same at an aged condition where there are no substantial number of smoke particles in order to obtain the difference between the initial and aged zero standard levels.
FIGS. 6 and 7: the functional arrangement of said receiver 1 is shown for easy understanding of the operation of said receiver 1. The receiver can be separated into three functional divisions, one indicated at X of FIG. 6 for a fire judging division, another indicated at Y for an interlocking division and the other indicated at Z for an information setting division. The functions of the fire judging division X will now be discussed with reference to FIGS. 6 and 7 in which conventional fire detectors 7 of circuit shorting type along with the smoke detectors 5 of intelligent type are connected to the receiver 1.
FIG. 6: said interlocking division Y comprises an interlocking information processing section 70 connected through an interface 68 to said central information processing section 65, pairs of drivers 71 and receivers 72 both interconnected between the interlocking information processing section 70 and the respective control lines 10. Each driver 71 is arranged to actuate the corresponding fire prevention equipments 11 and 12 in response to the instruction from the interlocking information processing section 70 and each receiver 72 is arranged to monitor the conditions of the equipment so as to inform the processing section 70 of their conditions. Such instruction to each drivers 71 is made when the central information processing section 65 identifies the presence of fire with regard to the smoke density signals from the particular smoke detector or detectors related to the fire prevention equipment to be actuated.
The relation between the particular smoke detector or detectors 5 and the equipment can be arbitrarily established at an input section 73a by the operator. That is, the operation of assigning specific smoke detectors to the fire prevention equipment is performed by the use of a keyboard as said input section 73b and such combination of the smoke detectors and the equipments are stored in the interlocking information processing section 70. An indicating section 73b is coupled to the section 70 for display of the operating conditions of the fire prevention equipment.
Included in said information setting division Z of the receiver 1 is an individual smoke detector information processing section 74 which is connected through an interface 69 to said central information processing section 65 so as to be associated therewith for handling the individual information with regard to the respective smoke detectors 5. Such individual information includes the afore-mentioned sensitivity of the system for each smoke detector 5, and functional combinations of the smoke detectors the details of which will be explained hereinafter with reference to the operation of the system. The above information setting is carried at an input section 75b comprising a keyboard and the keyboarded information is stored in the information processing section 74. An indicating section 75b is connected to the section 74 for displaying relevant information as to the above individual information.
FIGS. 8A to 8D: The above sensitivity is determined by selecting a reference smoke density level among said predetermined density levels L1, L2 and L3 respectively corresponding to 5%, 10% and 15% of smoke density, as indicated in these figures, and by selecting a reference time period between said predetermined time periods, say, 6 seconds and 30 seconds. In these figures, said reference density level is set to be the second level L2, for example. Prior to proceeding with the explanation of the fire judging scheme, it is noted that the system is also provided with pre-alarm means for issuing a pre-alarm signal representative of possible fire presence.
The pre-alarm means is arranged to issue the pre-alarm signal either when selected one of the smoke detectors detects a smoke density above a sub-reference smoke density which is lower than said reference smoke density and at the same time such smoke density lasts over a predetermined time period, or when the time periods in each of which the smoke density detected by the same exceeds said reference smoke density total more than a predetermined value. This function of issuing the pre-alarm signal can be selectively assigned to specific smoke detectors also by the use of said keyboard. In the present system, said sub-reference smoke density is automatically set to be lowered by one level, i.e., to be the first level Li in the figures.
A flow diagram for an exemplary operating sequence of the present system is shown in FIG. 8, composed of FIGS. 8A to 8E, for easy understanding of the present invention. One of the advantageous functions effectuated by the present system is a fire responsive sensitivity shifting sequence, which serves to increase the sensitivity of the system to fires once the fire presence is identified at any one of the discrete locations for early detection of the progress and spread of fires, by which rapid fire fighting can be available. The CPU in said fire judging division X of the receiver 1 is responsible for that operation and responds to execute a programmed sequence when said fire judging section 64 identifies the presence of fire at any one of the selected smoke detectors 5 forming an arbitrary group, that is when the combined information of smoke density sent from any one of the smoke detectors 5 in different locations and the corresponding time period is determined be representative of fire presence at the fire judging section 64.
At the occurrence, the respective sensitivities of the system against fires with respect to the other smoke detectors 5 in the other locations are automatically increased by shifting either or both of the reference smoke density level and reference time period for each of the smoke density signals from the smoke detectors in said group. Consequently, the system can be ready for accurately following the spread of fires so as to allow the personnel to promptly take steps for checking the spread of fires and to maintain the damage at a minimum. The designation of said group of smoke detectors can be made by the keyboarded entry at said input section 75b of the information setting division Z of the receiver 1.
A 24-hour timer 100 is incorporated in the present system for shifting the sensitivity of the system against fires in the selected locations where the conditions may differ with daytime and nightime. For this purpose, a timer responsive sensitivity shifting sequence is introduced to be executed in response to the timer 100. The shifting of the sensitivity is found to be useful and should be rather necessary in view of the fact that certain location or rooms among the locations under surveillance by the smoke detectors 5 will subject to considerable change in the smoke density level between the daytime and the nighttime. That is, rooms where there is frequent smoking or the use of cooking appliances should have the smoke detectors the sensitivity of which is higher at night than in daytime for preventing false detection of fire due to the smoking and the like in daytime, while for providing an early and reliable detection of fire in nighttime.
The timer responsive sensitivity shifting sequence, the CPU instructs said fire judging section 64 to increase the sensitivity of the system with respect to each of the selected smoke detectors 5 by shifting either or both of the reference density level and the reference time period in response to the output of the timer 100 indicating the beginning of the nighttime, and to decrease the sensitivity in response to the output of the timer 100 informing the beginning of daytime. In the present invention, the 24-hour timer 100 is utilized to account for the different conditions of the location from in daytime and in nighttime in the sense of discriminating the condition of the location when people are present from when people are absent. Therefore, a human detector or other devices capable of discriminating the above difference may be utilized instead of the 24-hour timer 100.
As described previously, the fire prevention equipments 11 and 12 are interlocked with the receiver 1 so that they are actuated when the fire judging section 64 identifies the presence of fire based on the information from the related or associated smoke detectors 5. The CPU acknowledges the interrelation determined at the input section 75b by the operator between the specific smoke detectors 5 and the specific fire prevention equipments 11 and 12, such that the operation sequence of the present system cares for the automated actuation of the fire prevention equipment 11 and 12.
The invented system, several smoke detectors 5 can be combined optionally into an interrelated family which is termed as an ANDed combination by the keyboarded entry at said input section 75b of the receiver 1. The ANDed combination of the smoke detectors is such that said central information processing section 65 produces the alarm signal only when all of the information sent from the respective smoke detectors 5 forming the ANDed combination are judged at the fire judging section 64 to be representative of fire presence. The ANDed combination of the smoke detectors 5 is stored in a memory unit a of CPU so that the operating sequence of the system can care for this unique operation.
The invented system, several smoke detectors 5 can be combined optionally into another interrelated family which is termed as an AND/OR combination composed of more than two smoke detectors 5 and is designated by the keyboarded entry at the same input section 75b of the receiver 1. In said AND/OR combination, one or more of the smoke detectors 5 are designated as superior ones, and the others designated as inferior ones. The above combination or interrelation between the smoke detectors 5 is stored in the memory unit 65a and acknowledged by the CPU such that the operating sequence care for the above combination, whereby the CPU provides the alarm signal either when said fire judging section 64 identifies the presence of fire based upon the information from any one of the superior smoke detectors 5 or when said fire judging section 64 identifies the presence of fires based upon the information from all of the inferior smoke detectors 5. By the employment of the above ANDed combination and the AND/OR combination, the present system can be properly adapted to different conditions of use for providing maximum reliability in detection of fires simply by assigning the smoke detectors to the ANDed combination and the AND/OR combination.
Editorial Note 2020102097 There is only three pages of the claim
WE CLAIMS 1. Our Invention "NIBT- Fire Detection " is a system is provided that includes a sub base station, base station and main control station of a security system having an IoT- Baser and wireless transceiver a processor of the base station that periodically transmits a beacon under a 6LowPan/IoT protocol defining an information transfer superframe having a plurality of time division multiple access (TDMA) slots. The Invented technology a remotely either switch-based located devices each with a sound transducer and an IoT-based, wireless transceiver that exchanges messages with the base station within the TDMA slots of the superframe, self-design frame, and a respective method and processor within each of the of remotely located devices that determine a sound activation pattern and a location of a multicast slot within the superframe from the beacon detects an activation message within the multicast slot and activates the sound transducer based upon the location of the multicast slot in accordance with the sound activation pattern. The invented technology the sensors may be monitored by a control panel in the event that one of the sensors is activated the control panel may activate a local audible alarm to warn occupants in the area, location, distance of the threat. The invented technology mans the control panel may also send an alarm message to a central monitoring station and a portable device, such as key fob may be used to send emergency alerts (e.g., panic alarms, medical alerts, police, etc.) to the control panel and also to send commands to the control panel. 2. According to claims# the invention is to a system is provided that includes a sub base station, base station and main control station of a security system having an IoT- Baser and wireless transceiver a processor of the base station that periodically transmits a beacon under a 6LowPan/IoT protocol defining an information transfer superframe having a plurality of time division multiple access (TDMA) slots. 3. According to claiml,2# the invention is to the Invented technology a remotely either switch-based located devices each with a sound transducer and an IoT based, wireless transceiver that exchanges messages with the base station within the TDMA slots of the superframe, self-design frame, and a respective method and processor within each of the of remotely located devices that determine a sound activation pattern and a location of a multicast slot within the superframe from the beacon detects an activation message within the multicast slot and activates the sound transducer based upon the location of the multicast slot in accordance with the sound activation pattern. 4. According to claiml,2,3# the invention is to the invented technology the sensors may be monitored by a control panel in the event that one of the sensors is activated the control panel may activate a local audible alarm to warn occupants in the area, location, distance of the threat. 5. According to claim,2,4# the invention is to the invented technology mans the control panel may also send an alarm message to a central monitoring station and a portable device, such as key fob may be used to send emergency alerts (e.g., panic alarms, medical alerts, police, etc.) to the control panel and also to send commands to the control panel. The invention is to wherein the processor of the base station transmits the activation message and the sound activation pattern in the beacon with a multicast short address or as a 6LowPAN based multicast message within a predetermined one of the plurality of TDMA slots of the information transfer super frame. 6. According to claim,2,4,5# the invention is to wherein the respective processor of each of the plurality of remotely located devices activates the sound transducer of the respective one of the plurality of remotely located devices synchronously with the sound transducer of each of the plurality of remotely located devices. The invention is to wherein at some of the plurality of remotely located devices comprise a combustion detector and also the invention is to wherein the respective processor of each of the at least some of the plurality of remotely located devices monitors the combustion detector of the respective one of the plurality of remotely located devices for indication of a fire and sends a fire alarm message to the base station. 7. According to claim,2,6# the invention is to wherein the processor of the base station detects the fire alarm message and sends the activation message to each of the plurality of remotely located devices to activate the sound transducer of the respective one of the plurality of remotely located devices and also the invention is to wherein the combustion detector comprises one of a smoke detector and a carbon monoxide detector. The invention is to wherein the sound activation pattern comprises a first sound activation pattern for detection of smoke and a second sound activation pattern for detection of carbon monoxide. 8. According to claim,2,7# the invention is to including a timer and timer responsive sensitivity shifting means which responds to the input from said timer for varying the sensitivity of the sytem against the smoke density signal transmitted from at least one of the smoke detectors for determination of fire presence at said fire judging means, such sensitivity shifting resulting from the shifting of at least one of the reference density level and reference time period for each smoke density signal from said smoke detectors. The invention is to wherein one or more of the smoke detectors are operatively associated with fire prevention equipment such as fire shutters, fire extinguishers and smoke ejectors each of which is to be actuated upon the determination of fire presence by said fire judging means in the location where the associated smoke detector is installed; and wherein said receiver further includes associate sensitivity shifting means, responsive to the instructions entered at an input device on the receiver designating specific smoke detectors as associated with the fire prevention equipment, for descreasing the sensitivity of the system against the smoke density signal transmitted from each smoke detector associated with said fire prevention equipment relative to that against the smoke density signal transmitted from each smoke detector having no operational relation to the fire prevention equipment.
9. According to claiml,2,7,8# the invention is to further including pre-alarm means for issuing a pre-alarm signal when at least one of (a) the smoke density from any one of the selected smoke detectors exceeds a sub-reference density level which is lower than said reference density level and at the same time such smoke density lasts over a predetermined time period, and (b) when the time periods in each of which said smoke density exceeds said reference level total more than a predetermined value, occurs. The invention is to including ANDed fire alarm means which actuates said alarm means to issue the alarm signal only when said fire judging means determines fire presence for the respective smoke density signals transmitted from all of the smoke detectors forming an AND combination, and the smoke detectors forming said AND combination being designated by the instruction from an input device such as a keyboard provided on the receiver. Date: 31/8/30 Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor)
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 1: IS A BLOCK DIAGRAM OF A SECURITY SYSTEM IN ACCORDANCE HEREWITH.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 2: IS A DEPICTS A SUPER FRAME THAT MAY BE USED BY THE SYSTEM OF FIG. 1.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 3: IS A DEPICTS A IOT/ WIRELESS CONNECTION DIAGRAM BETWEEN SENSORS AND THE CONTROL PANEL OF FIG. 1.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 4: IS A DEPICTS A SET OF TEMPORAL PATTERNS THAT MAY BE USED BY THE SYSTEM OF FIG. 1.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 5: IS A SCHEMATIC BLOCK DIAGRAM SHOWING THE FUNCTION TO DETECTOR OF INTELLIGENT TYPE EMPLOYED IN THE ABOVE SYSTEM.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 6: IS A SCHEMATIC BLOCK DIAGRAM SHOWING THE FUNCTION OF A RECEIVER EMPLOYED IN THE ABOVE SYSTEM.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 7: IS A SCHEMATIC DIAGRAM IN SOMEWHAT CONCRETE REPRESENTATION OF THE PART OF THE ABOVE RECEIVER.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 8A: IS A SHOWS A FLOW DIAGRAM ILLUSTRATING THE OPERATIONAL SEQUENCE OF THE ABOVE SYSTEM.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 8B: IS A SHOWS A FLOW DIAGRAM ILLUSTRATING THE OPERATIONAL SEQUENCE OF THE ABOVE SYSTEM.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 8C: IS A SHOWS A FLOW DIAGRAM ILLUSTRATING THE OPERATIONAL SEQUENCE OF THE ABOVE SYSTEM.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 8D: IS A SHOWS A FLOW DIAGRAM ILLUSTRATING THE OPERATIONAL SEQUENCE OF THE ABOVE SYSTEM.
FOR Dr. Padmalaya Nayak (Professor) Dr. K. Ramesh Babu (Professor) Dr. Surbhi Gupta (Associate Professor) Dr. Neeraj Mohan (Assistant Professor) Dr. Priyanka Kaushal (Associate Professor) Dr. Padmavathi Kora (Professor) 02 Sep 2020
TOTAL NO OF SHEET: 12 NO OF FIG.12 2020102097
FIG. 8E: IS A SHOWS A FLOW DIAGRAM ILLUSTRATING THE OPERATIONAL SEQUENCE OF THE ABOVE SYSTEM.
AU2020102097A 2020-09-02 2020-09-02 NIBT- Fire Detection : FIRE DETECTION AND NOTIFICATION USING IOT BASED TECHNOLOGY Ceased AU2020102097A4 (en)

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