JP2008262384A - Fire alarm and fire alarm monitor controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce fire damage due to a start delay and to dispense with reading/writing equipment by exchanging information with all fire alarms in a specific area. <P>SOLUTION: All fire alarm bodies A11 to A21 and B11 to B21 in a specific area are configured to exchange information. By such configuration, when a fire is recognized in one part of the specific area, the information is instantaneously transmitted to all places. Accordingly, the moment the fire alarm bodies A11, A12, B11, and B12 on the first floor recognize a fire occurring on the first floor, the fire alarm bodies A21 and B21 in a bed room on the second floor also recognize the fire. Therefore, the fire damage by the start delay can be reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention applies a global standard short-range wireless network, builds a fire alarm network that can be used indoors or outdoors with various network topologies, and can store incidental information such as position information and fire. The present invention relates to a monitoring control device for monitoring and controlling an alarm.

  Conventionally, various fire alarms and fire alarm systems have been proposed. Among them, there were many means for transmitting the fact that a fire was detected to the monitoring and control device by wire, but in recent years, means for transmitting the fire detection to the monitoring and control device wirelessly using a wireless chip instead of wired has been developed. Is coming.

The wireless chip has a power generation circuit and transmits it to a fire detection system attached to a building or vehicle via a reading / writing device. This wireless chip includes at least a temperature sensor, a sensor incorporating the position information of the wireless chip and a temperature sensing function, and a memory for storing the information. This fire detection system using a wireless chip is a means to transmit fire detection information by wireless, so there is no need to set a fire detection location in advance, and there is no restriction on the design of buildings and vehicles. This eliminates the need for local construction wiring and has the advantage of reducing costs.
JP 2006-331407 A

  In the fire alarm system provided with the above-described wireless chip, one reading / writing device is always required within the communicable distance of the wireless chip, and thus there are the following problems (a) and (b).

  (A) In the worst case in relation to the communication distance, as many read / write devices as the number of wireless chips are required, and there is a problem that the cost increases, and the device cannot be simplified.

  (B) Fire information cannot be exchanged directly between wireless chips.

  In the system of Patent Document 1 described above, a mesh type cannot be taken as a network topology. For this reason, when a reading / writing device is broken, there is a problem that fire information from all the wireless chips connected to the reading / writing device cannot be collected by the host monitoring control system.

  The wireless chip described in Patent Document 1 has a power generation circuit, and thus has a merit in that a battery and an external power supply are unnecessary, but conversely, since the wireless communication distance is short, a large number of reading / writing devices are required. There is also a problem.

  In recent years, it has become mandatory to install fire alarms in existing houses, but in the case of two-story and three-story houses, the majority of cases have multiple fire alarms installed. With commercial fire alarms, it is not possible to exchange information directly between fire alarms, so even if a fire is recognized at one location in the building, the fire alarms installed at other locations are still within their own sensing area. Unless there is a sign of fire, the fire is not recognized. Moreover, the current situation is that it is impossible to recognize a fire in a neighboring house.

  The present invention has been made in view of the above circumstances, and is constructed so that information can be exchanged with all fire alarms existing in a specific area so that the fire damage due to initial delay can be reduced. It is another object of the present invention to provide a fire alarm and a fire alarm monitoring control device that eliminates the need for reading and writing devices.

In order to achieve the above-mentioned problem, the present invention provides a memory unit for storing information on the own node and other nodes belonging to the wireless communication network and operation setting information of the fire alarm body,
A power supply unit that consists of a commercial power supply and a power failure compensation battery, and supplies power to each unit;
A wireless module corresponding to the short-range wireless communication standard;
A fire alarm unit having a function of converting an external flame, smoke, sound, or other physical phenomenon into an electrical signal;
It is determined that a fire has occurred from an external physical phenomenon recognized by the fire notification unit or information in the memory unit, and a signal for notifying the determination result to the outside is output from the fire notification unit and also supplied to the wireless module unit A control circuit unit,
The control circuit unit receives fire information of another base from the wireless module unit and notifies the information to the outside from the fire notification unit.

  In the fire alarm, the fire alarm main body is arranged in a specific area, information is exchanged between the fire alarm main bodies existing in the area, and the fire occurrence in the area can be recognized anywhere. The fire alarm body was constructed so that

  Furthermore, the present invention is characterized in that the wireless module provided in the fire alarm body has a multi-hop communication function, and the network configuration is constructed in a mesh network.

  Furthermore, the present invention is characterized in that the fire alarm main body performs monitoring control from a monitoring control server or a terminal via a multi-hop communication function.

  According to the present invention, it is constructed so that information can be exchanged with all the fire alarms existing in a specific area, and when a fire is recognized at one place, the information is instantly transmitted to all the places. By sharing the fire perception in the country, it is possible to reduce the fire damage caused by the initial delay.

  In addition, according to the present invention, by adopting a mesh-type network topology configuration, a communication route can be secured even when some fire alarms leave the network due to a failure or the like, and multi-hop communication is used. Therefore, it is not necessary to prepare a special infrastructure, the initial cost can be suppressed, and the number of information devices can be reduced to simplify the apparatus.

  Furthermore, according to the present invention, the fire alarm can be remotely controlled from the monitoring and control system, and a message stored in the fire alarm in advance can be output. By sharing various disaster prevention / crime prevention information with fire alarms, it is possible to build community security that can be expected to be strong in local disaster prevention / crime prevention.

  In addition to the above, by connecting to a WAN line, an authorized person can know the local fire situation from a remote location. In addition, various functions of the fire alarm can be controlled from a remote location.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing Embodiment 1 of the present invention. This Embodiment 1 is a fire alarm to which a wireless module for a short-range wireless network (ZigBee) is added. In FIG. 1, reference numeral 1 denotes a fire alarm main body. The fire alarm main body 1 includes a power supply unit 2, a memory unit 3, a wireless module unit 4, a control circuit unit 5, and a fire notification unit 6.

  The power source unit 2 includes a commercial power source that supplies power to each unit and a power failure compensation battery, and is configured so that a commercial power source or a battery alone can be selected. When the battery is operating, a voltage drop due to a decrease in battery capacity is predicted and sensed, and the situation is notified to the outside by light emission or the like.

  The memory unit 3 has information on its own node and other nodes belonging to a wireless communication network WPAN (Wireless Personal Area Network) used in a short distance (fire, failure of other fire alarm body, battery voltage drop, physical installation) Predetermined information such as location) and operation setting information of the fire alarm main body are stored.

  The wireless module unit 4 is a module (commercially available) compatible with “ZigBee” of the short-range wireless communication standard. By using this module, it supports up to 65000 nodes, realizes a multi-hop network function, and allows WPAN participation and withdrawal without special setting of the fire alarm body. This wireless module unit 4 transmits and receives fire information between the local site and other sites.

  The control circuit unit 5 controls the entire fire alarm by performing the following operations using a programmable logic device (PLD) or a micro processing unit (MPU).

  1. The external situation recognized by the fire alarm body 1 and the information in the memory unit 3 (such as the fire alarm status of its own base) are acquired.

  2. From the above information, fire occurrence (own site, other site) is determined.

  3. In the event of a fire at the local site, an electrical output for issuing a fire alarm for the local site is output to the fire alarm. In addition, the fact that the local site is a fire is set in the data portion of the frame flowing on the wireless communication network WPAN. When a fire at another site occurs, an electrical output for issuing a fire alarm for another site is output to the fire alarm body 1.

  4). Even during operation, interrupt when changing the initial input information such as installation location and operation setting information.

  5. Deterioration operation control is performed by displaying the status to the outside when the battery voltage drops and by leaving the node from the wireless communication network WPAN.

The fire alarm unit 6 is configured in blocks as shown in detail in FIG. 2, and as an external input (physical phenomenon), a pre-ignition phenomenon “gas leak, temperature rise, etc.”, a post-ignition phenomenon “flame, sound, smoke, temperature rise like "the various sensors (thermal sensors, sound sensors, smoke sensors, gas sensors) sensed by 6 _1, converts them into electrical signals, an analog / digital (a / D) control circuit via a converter 6 ₂ Is transmitted to the unit 5.

When fire or abnormal recognized to have occurred an electrical signal which is transmitted by the control circuit unit 5, an electric signal output from the control circuit unit 5, and converted by a digital / analog (D / A) converter 6 ₃ various alarm output to the outside through the (speaker, a buzzer, light emitters, vibration motor) 6 _4. The external output (physical phenomenon) includes sound, light emission, and vibration.

  Next, the basic operation of the first embodiment will be described with reference to FIG. When the initial information is input to the fire notification unit 6 in step S1, whether the information is local site fire information or other site fire information is acquired in steps S2 and S3. In step S4, the fire occurrence status is determined from the information acquisition result.

  If the result of the determination is that a fire at the local site has occurred, a fire alarm for the local site is issued in step S5, information is transmitted to other sites in step S6, and then the process proceeds to the initial input information correction interrupt process in step 8. . On the other hand, if the result of the determination is that a fire at another site has occurred, a fire alarm for another site is issued at step S7, and the process proceeds to step S8.

  If it is determined in step S8 that there is no interrupt, the process proceeds to step S2. If it is determined that the interrupt is “present”, the process proceeds to step S1.

  Next, in describing the second embodiment, a mesh network will be described. The mesh network is a form in which the nodes are connected to each other and communicate like a network.

  Each node has a routing function, and sends data to the next node by a relay method according to the routing table of each node. Even if a node in the middle of a communication route does not function, the network is highly robust because it communicates by bypassing another route according to the routing table.

  The fire alarm body of the first embodiment supports the mesh network topology defined by the ZigBee network layer. It has a self-forming function that finds another fire alarm body within the radio wave reach of the fire alarm body and establishes a communication path with the other party. In addition, when a communication path established due to a failure of the fire alarm body occurring in the WPAN is changed, it has a self-repair function for establishing a new communication path.

  In addition, the fire alarm body has a multi-hop function for relaying not only its own data but also data between other fire alarm bodies. With this function, communication with a node that does not receive direct radio waves on the WPAN is ensured even in short-distance radio communications with reduced radio wave output (low power consumption). With regard to node joining and leaving, it is possible to respond to configuration changes autonomously by the self-forming function and the self-healing function.

  FIG. 4 is a schematic configuration diagram showing the second embodiment. In FIG. 4, A11, A12, A21 are fire alarm main bodies at home A, B11, B12, B21 are fire alarm main bodies at home B, both fire alarms The main body has the structure shown in FIG. Therefore, each fire alarm body has a wireless module unit 4 and can be configured in a star type, tree type, and mesh type network topology by setting. FIG. 4 is a configuration example of a mesh type wireless network. .

  In this configuration, a monitoring control system mainly including a monitoring control server is not required, and each fire alarm main body operates independently. In order to simplify the configuration, the case where there are two locations, namely, A home and B home is shown, but a configuration with three or more locations is also possible.

  The operation in the second embodiment configured as described above will be described below. Various operation settings are made in advance in each of the fire alarm main bodies A11, A12, A21, B11, B12, and B21. An example of the operation when a fire occurs is shown below.

In case of fire at your site: Alarm A ringing (required), flashing light emission pattern (selection)
When a fire at another site occurs: During normal times, a voice notification (selection) and flashing pattern B (selection) that a fire has occurred in the area
Alarm sound B sounds (selection), flashing light emission pattern B (selection) only when a fire occurs in the adjacent house at bedtime
Here, it is assumed that the fire alarm body A11 at the home A senses the occurrence of a fire. Then, the fire alarm main body A11 distributes the fire occurrence to all the fire alarm main bodies on the WPAN by multicast. Thereby, all the fire alarm main bodies share that the fire alarm main body A11 has detected a fire occurrence. At this time, although radio waves do not reach directly from the fire alarm main body A11 to the fire alarm main bodies B11 to B21 of the B home, they are reliably delivered by the multi-hop communication function.

  Specifically, the delivery to the B house is delivered to B11 and B21 of the B house by relaying A12 or A21. B12 is further relayed via B11 or B21. Note that which fire alarm body relays is autonomously performed according to the routing table of each fire alarm body.

  The fire alarm body A11, A12, A21 in the home A recognizes that the A11 in its own site has detected a fire, and performs an operation according to the operation setting when the fire of its own site occurs. The fire alarm main bodies B11, B12, B21 at the home B recognize that the A11 in the other base has detected the occurrence of the fire, and perform the operation according to the operation setting when the fire at the other base occurs.

  FIG. 5 is a schematic configuration diagram showing the third embodiment, and this third embodiment is a mode in which a monitoring control system is added to the above-mentioned second embodiment in a community hall or a local firefighting / disaster prevention base. In FIG. 5, C11 is a monitoring control server, and C12 is an external wireless module unit for ZigBee. The wireless module C12 can be built in.

  Next, the operation of the third embodiment will be described again, although there are portions that partially overlap the operation of the second embodiment.

  Various operation settings are made in advance in each of the fire alarm main bodies A11, A12, A21, B11, B12, and B21. An example of the operation when a fire occurs is shown below.

In case of fire at your site: Alarm A ringing (required), flashing light emission pattern (selection)
When a fire at another site occurs: During normal times, a voice notification (selection) and flashing pattern B (selection) that a fire has occurred in the area
Alarm sound B sounds (selection), flashing light emission pattern B (selection) only when a fire occurs in the adjacent house at bedtime
Here, it is assumed that the fire alarm body A11 at the home A senses the occurrence of a fire. Then, the fire alarm main body A11 distributes the fire occurrence to all the fire alarm main bodies on the WPAN by multicast. Thereby, all the fire alarm main bodies share that the fire alarm main body A11 has detected a fire occurrence. At this time, the radio alarm does not reach directly from the fire alarm main body A11 to the fire alarm main bodies B11 to B21 of the B house and the monitoring control servers C11 and C12 at the installation location of the monitoring control system. Is done.

  Specifically, the delivery to the B house is delivered to B11 and B21 of the B house by relaying A12 or A21. B12 is further relayed via B11 or B21. A21 and B21 are relayed to C12, and C12 is relayed to C11. Note that which fire alarm body relays is autonomously performed according to the routing table of each fire alarm body.

  The fire alarm body A11, A12, A21 in the home A recognizes that the A11 in its own site has detected a fire, and performs an operation according to the operation setting when the fire of its own site occurs. The fire alarm main bodies B11, B12, B21 at the home B recognize that the A11 in the other base has detected the occurrence of the fire, and perform the operation according to the operation setting when the fire at the other base occurs.

  The fire alarm C12 installed at the installation location of the monitoring control system performs an operation according to the operation setting at the time of fire at another site, and the monitoring control server C11 recognizes that A11 has detected the occurrence of a fire, and displays the screen. Or give an alarm.

  It collects various information such as information on fire alarm bodies A11, A12, A21 of A's house and weather conditions, and plans and supports the actions to be taken in the future. The result is presented to the operator by screen or voice.

  FIG. 6 is a schematic configuration diagram showing the fourth embodiment. In this fourth embodiment, a WAN line connection function is added to the monitoring control server C11 of the third embodiment, and Web technology is applied from an external portable terminal C1 or terminal C2. It is an embodiment in the case of monitoring control using. Since the operation is the same as that of the third embodiment, only different operations will be described.

  The monitoring and control system notifies the mobile terminal C1 and terminal C2 owned by residents, residents' association officers, fire brigade members, etc. of the fire occurrence site via WAN via voice or e-mail, etc. You can convene.

1 is a schematic configuration diagram showing a first embodiment of the present invention. The block block diagram of a fire alarm part. 2 is a flowchart describing the basic operation of the first embodiment. FIG. 3 is a schematic configuration diagram showing a second embodiment. FIG. 5 is a schematic configuration diagram showing a third embodiment. FIG. 6 is a schematic configuration diagram showing a fourth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fire alarm body 2 ... Power supply part 3 ... Memory part 4 ... Wireless module part 5 ... Control circuit part 6 ... Fire alarm part 6 ₁ ... Various sensors 6 ₂ ... Analog / digital (A / D) conversion part 6 ₃ ... Digital / analog (D / A) converter 6 ₄ ... Various alarms A11, A12, A21 ... Fire alarm body B11, B12, B21 ... Fire alarm body C1 ... Mobile terminal C2 ... Terminal C11 ... Monitoring control server C12 ... Fire Alarm body

Claims (4)

A memory unit for storing information of the own node and other nodes belonging to the wireless communication network and operation setting information of the fire alarm body;
A power supply unit that consists of a commercial power supply and a power failure compensation battery, and supplies power to each unit;
A wireless module corresponding to the short-range wireless communication standard;
A fire alarm unit having a function of converting an external flame, smoke, sound, or other physical phenomenon into an electrical signal;
It is determined that a fire has occurred from an external physical phenomenon recognized by the fire notification unit or information in the memory unit, and a signal for notifying the determination result to the outside is output from the fire notification unit and also supplied to the wireless module unit A control circuit unit,
The control circuit unit receives fire information of another base from the wireless module unit, and notifies the information to the outside from the fire notification unit. In the fire alarm according to claim 1,
Multiple fire alarm bodies were placed in a specific area, information was exchanged between the fire alarm bodies in the area, and the fire alarm body was constructed so that the occurrence of a fire in the area could be recognized anywhere A fire alarm monitoring and control device.   The fire alarm monitoring and control apparatus according to claim 2, wherein the wireless module section provided in the fire alarm main body has a multi-hop communication function and is constructed in a mesh network as a network configuration.   The fire alarm monitoring control apparatus according to claim 2 or 3, wherein the fire alarm body is monitored and controlled from a monitoring control server or a terminal via a multi-hop communication function.

Images