JP5507835B2 - Wireless alarm - Google Patents

Description

The present invention relates to a wireless alarm device that detects an abnormality such as a fire and transmits it to the receiver side by radio to give an alarm.

Conventionally, in the disaster prevention monitoring system wireless monitoring the fire, to install a plurality of wireless sense knowledge units in the security area, such as each floor of a building, upon detection of the fire wirelessly sense knowledge unit, a fire The radio signal shown is transmitted to a radio reception repeater installed on a floor basis. The radio reception repeater is connected to the sensor line from the fire receiver installed in the disaster prevention center. When a fire radio signal is received, the alarm current is generated between the detection lines when the relay contact or switching element is turned on. The fire alarm signal is sent to the receiver by issuing a fire alarm.

According to such a wireless disaster prevention monitoring system, can the sensor lines for connecting the repeater is installed in the floor unit of the building sensor unnecessary, wiring work is simplified, the installation location of the sensors Can also be determined as necessary.

However, in such a conventional wireless disaster prevention monitoring system, may the place where radio waves do not reach, such as in a duct must be installed fire detector, in such a case a wireless sense An intelligent device cannot be installed, which is a bottleneck when building a wireless disaster prevention monitoring system. It is also possible that the signal environment cannot be transmitted due to changes in the radio wave environment during system operation after the installation of the wireless sensor.

  In such a case, it is necessary to add a wireless reception repeater near the wireless sensor that is in a transmission failure state and to perform a long-distance wiring work from the wireless reception repeater to the receiver in some cases. there were.

Thus, when the long-distance wires that should not originally required becomes necessary, wiring work is that the benefits of wireless disaster prevention monitoring system is significantly impaired such simple. In addition, an increase in the number of repeaters that are not in the original system concept has a problem in that there is a great demerit in terms of cost and a new installation site must be secured.

In consideration of the case where an alarm device such as a fire detector is installed in a place where radio waves do not reach, the present invention uses a minimum of wired wiring so as not to impair the advantages of the wireless disaster prevention monitoring system as much as possible . The purpose is to provide a wireless alarm device that can complement the disaster prevention monitoring system.

The present invention, in the wireless alarm device for outputting an alarm from the hardwired receiver repeater by wirelessly transmits an abnormal event signal when it detects an abnormality to the relay,
A wired connection for connecting other alarm devices via a signal line; and
External event processing that, when receiving an external event signal from another alarm device via a wired connection, determines the occurrence of an event indicating an abnormality in another alarm device, and wirelessly transmits the abnormal event signal to the repeater And
A power output unit that supplies power from the battery mounted on itself to another alarm device via a signal line;
It is provided with.

The power output unit includes a switching unit that switches to a state in which the power from the battery is not supplied to the other alarm device while maintaining the connection of the signal line when the other alarm device can supply power by itself.

The external event processing unit identifies an address of another alarm device when an external event signal is received from another alarm device , and wirelessly transmits an abnormal event signal to which the identified address is added to the repeater .

Wireless alarm device of the present invention, further, upon receiving the restoration instruction of the repeater or al, comprises a recovery control unit for sending the other recovery command signal to an alarm device which is wire-connected with restored self.

Recovery control unit, upon receiving a restoration instruction identifies the address of the alarm to be recovery target, identified recovery target is restored self if a self-recovery subjects identified a wired connection If it is another alarm device, a recovery instruction signal is sent to the alarm device to be recovered.

Wireless alarm device of the present invention, further, upon receiving the test order of the repeater or al, sends another test command signal to an alarm device which is wire-connected with testing its own state, the self-test results And a test control unit for transmitting test results of other alarm devices to the repeater . Further, the test control unit causes the display unit to display only its own test result, or its own test result and the test result of another alarm device.

According to the onset bright, connect the other alarm devices by a signal line to wireless alarm devices installed in a location where signal is strong, which is outputted when an abnormality is detected such as a fire in the other alarm devices Events for wirelessly receive and transmit signals, for the location, such as duct radio waves do not reach, and established the normal wired alarm devices by wired connection to a wireless alarm devices, fire monitoring system actual wireless benefits to avoid as much as possible impaired. Moreover, it is possible to complement the disaster prevention monitoring system wireless a simple and low cost.

By securing simple supplementary means in this way, it is possible to obtain advantages such as easy system proposal and system security for the user. If a wireless signal is also transmitted from a wired alarm device, the state of the sensor can be checked using a wireless maintenance jig or the like.

Figure 1 is an explanatory diagram showing a disaster prevention monitoring system using a wireless sense known device as a wireless alarm device of the present invention. In FIG. 1, a P-type receiver 10 is installed as a fire receiver on the first floor of a building 11 to be monitored. From the P-type receiver 10, sensor lines 18-1 to 18-3 are drawn out by floor. It is.

  Among these, the radio reception repeater 12 is installed in 1F and 3F, and is connected to the sensor lines 18-1 and 18-3, respectively. The wireless sensor 16 according to the present invention is installed in the wireless reception repeater 12 installed in 1F and 3F.

  The wireless sensor 16 detects a fire and transmits an event signal indicating the fire to the wireless reception repeater 12, and the wireless reception relay 12 determines the fire from the event signal received from the wireless sensor 16. The alarm signal is sent to the P-type receiver 10 by causing the alarm current to flow through the sensor line 18-1 or 18-3, so that a fire alarm is performed for each line.

  The wireless sensor 16 according to the present invention includes a wired connection part using an external connection terminal and a connector for wired connection to other sensors in addition to a function of detecting a fire by the sensor itself and wirelessly transmitting an event signal to the outside. ing. For example, in 3F, when it is necessary to install a sensor in, for example, the duct 22 which becomes a radio wave shielding space where radio waves do not reach the radio reception repeater 12, the radio sensor 16 cannot be installed. Therefore, a normal wired sensor 20 is installed in the duct 22, and the wired sensor 20 is connected to the wireless sensor 16 of the present invention installed in the vicinity of the radio wave by the signal line 21. doing.

  By connecting the wired sensor 20 installed in the duct 22 to the wireless sensor 16 with the signal line 21 in this way, when a fire is detected by the wired sensor 20, an event signal indicating a fire is signaled. The wireless sensor 16 transmits the signal to the wireless sensor 16. When the wireless sensor 16 determines that the external event signal has been received from the wired sensor 20, the wireless sensor 16 wirelessly transmits it to the wireless reception repeater 12. The fire is determined from the external event signal from the wired sensor 20 by the wireless reception repeater 12, and the alarm signal is transmitted to the P-type receiver 10 through the sensor line 18-3 to cause a fire alarm. Can do.

Here, in the disaster prevention monitoring system of FIG. 1, the wireless sensor 16 is installed for the 1st floor and the 3rd floor, but the 2nd floor is a space where radio waves are difficult to reach due to the partition of the room. The wired sensor 20 is directly connected to the sensor line 18-2 drawn from the P-type receiver 10. For this reason, the disaster prevention monitoring system of FIG. 1 constructs a mixed system of wireless type and wired type.

  FIG. 2 is a block diagram illustrating an embodiment of a wireless sensor according to the present invention. In FIG. 2, the wireless sensor 16 includes a processor 24. As the processor 24, a computer known as a one-chip microcomputer is used, and a CPU, a ROM, a RAM, an AD conversion port, various input / output ports and the like are provided on one chip.

  A wireless communication unit 26, a sensor unit 30, a nonvolatile memory 32, a wired connection unit 34, and a display unit 36 are provided for the processor 24. Further, power is supplied to each circuit unit by a battery power source 38. Yes.

  The wireless communication unit 26 includes a communication circuit 40 and a reception circuit 42, and uses the antenna 28 to transmit an upstream event signal and receive a downstream event signal with the wireless reception repeater 12 illustrated in FIG. .

  The sensor unit 30 detects smoke and temperature due to fire. For smoke detection, for example, a photoelectric smoke detection unit is provided, and for temperature detection, a temperature detection element such as a thermistor is provided.

  As the nonvolatile memory 32, for example, an EEPROM is used, and data including an address 44 assigned to the wireless sensor 16 is stored.

  The wired connection unit 34 includes a transmission circuit 46 and a reception circuit 48, and the wired sensor 20 can be connected to the signal line 21 through the external connection terminal 45. The external connection terminal 45 may be a connector. The number of other sensors connected to the wired connection unit 34 by the signal line 21 indicates one wired sensor 20 in the present embodiment, but a plurality of wired sensors may be used as necessary. Can also be connected.

  The wired connection unit 34 is further provided with a power output unit 50. The power output unit 50 can supply power to the wired sensor 20 connected via the signal line 21 from the battery power supply 38 built in the wireless sensor 16.

  The power output unit 50 further has a function of switching whether to supply power to the wired sensor 20 by a switching unit (not shown). That is, when there is no power source on the wired sensor 20 side, power is supplied from the battery power supply 38 to the wired sensor 20 connected via the signal line 21 by the switching operation of the power output unit 50. Can be made. On the other hand, when the wired sensor 20 is operated by another dedicated power source or has a built-in battery power source, the power output unit 50 may be switched to a state where no power is supplied.

  The display unit 36 is, for example, an alarm indicator using an LED, and detects an event by detecting a fire with the wireless sensor 16 or receiving an event signal from the wired sensor 20 connected with the signal line 21. When it is turned on, it flashes and flashes to display the alarm.

  The processor 24 is provided with an abnormality monitoring unit 52, an external event processing unit 54, a recovery control unit 56, and a test control unit 58 as functions realized by executing the program.

  The anomaly monitoring unit 52 reads, for example, a smoke detection signal detected by the sensor unit 30 from the AD conversion port, compares it with a preset fire threshold value, determines that a fire has been exceeded, and determines the fire as the event content. An uplink event signal is generated and transmitted from the wireless communication unit 26 to the wireless reception repeater 12 of FIG.

  When the external event processing unit 54 receives an event signal transmitted by the fire detection in the wired sensor 20 connected to the outside from the wired connection unit 34 via the signal line 21, the external event processing unit 54 The occurrence of an event due to fire detection is determined, and an upstream event signal indicating the contents of the external event is transmitted from the wireless communication unit 26 to the wireless reception repeater 12 shown in FIG.

  At this time, when receiving an event signal from the wired sensor 20, the external event processing unit 54 identifies the address, adds the address information of the identified wired sensor 20, and transmits the occurrence of the fire event to the outside. To do.

  The restoration control unit 56 performs a restoration signal (temporarily shuts off the power supply to the sensor line) after performing a fire alarm with the alarm signal from the wireless reception repeater 12 in the P-type receiver 10 of FIG. ) Is received, the recovery signal transmitted from the wireless reception repeater 12 to the wireless sensor 16 is received, or when a recovery operation unit is integrally provided in the wireless alarm device 16 The recovery operation is received and the wireless sensor 16 itself is recovered. At the same time, a recovery instruction signal is sent to the wired sensor 20 connected by the wired connection unit 34 via the signal line 21 to perform the recovery operation. Let it be done.

  Address information indicating the recovery destination is added to the recovery event downstream event signal received from the wireless reception repeater 12, and the wireless sensor 16 itself is recovered or the external address is determined according to the identification result of the address indicating the recovery destination. A restoration instruction for the connected wired sensor 20 can also be issued.

When the test control unit 58 receives a down event signal indicating a test instruction from the radio reception repeater 12 of FIG. 1 or when a test instruction operation unit is provided integrally with the wireless sensor 16, the test control unit 58 restores it. When the operation is accepted, the state of the wireless sensor 16 itself is tested, and a test instruction signal is output to the wired sensor 20 connected by the signal line 21, and the wired sensor 20 is also tested. Let it be done.

  When the wired sensor 20 performs a test operation, the test result is sent to the wireless sensor 16 as an upstream event signal. Therefore, the test control unit 58 determines and selects the test result notification information to the wireless reception repeater 12 based on its own test result and the test result received from the wired sensor 20 through the signal line 21 and transmits it. . This determination transmission of the test result is to transmit the test result of another alarm device together with its own test result.

  Further, the test control unit 58 can display the self test result or the test result of the wired sensor 20 externally connected to the self test result using the display unit 36 as necessary. For example, when an LED is used as the display of the display unit 36, display control is performed such that the LED is turned on if the test result is normal, and the LED is blinked if the test result is abnormal.

  FIG. 3 is an explanatory diagram showing the format of the upstream event signal and the downstream event signal in the wireless sensor of FIG. FIG. 3A shows an upstream event signal 70 transmitted from the wireless sensor 16, which includes a transmission source address, a transmission destination address, event contents, an event source address, and a checksum.

  The transmission source address is the address 44 stored in the nonvolatile memory 32 of the wireless sensor 16, and the transmission destination address is the wireless reception repeater 12 of FIG. The contents of the event include a fire, a failure, and a test result.

  Further, as the event source address, if the wireless sensor 16 itself is set, its own address 44 is set. On the other hand, if it is an event signal from the externally connected wired sensor 20, the address is set.

  Therefore, on the radio reception repeater 12 side in FIG. 1, if the event source address of the upstream event signal 70 is the same as the transmission source address, it can be identified that the event signal is from the wireless sensor 16; On the other hand, when the transmission source address and the event source address are different, it can be recognized that the event signal is from the wired sensor 20 externally connected to the wireless sensor 16.

  FIG. 3B shows a downlink event signal 72 transmitted from the wireless reception repeater 12 of FIG. 1 to the wireless sensor 16, and is composed of a transmission source address, a transmission destination address, a command, and a checksum. As commands, a recovery command as a recovery instruction signal, a test command as a test instruction signal, and the like are set.

  FIG. 4 is a flowchart showing sensor processing by the wireless sensor of FIG. 2, which will be described below with reference to FIG.

  In FIG. 4, when the operation is started by supplying power from the battery power source 38 of the wireless sensor 16, initialization and self-diagnosis processing are executed in step S <b> 1, and then the process proceeds to step S <b> 2. Whether or not a fire event has occurred is determined based on the detection signal. If it is determined in step S2 that a fire event has occurred, the process proceeds to step S3, where an upstream event signal 70 shown in FIG. 3A is created and wirelessly transmitted to the wireless reception repeater 12 as a fire event signal. .

  In step S4, it is determined whether or not an external event has occurred that receives an event signal from the wired sensor 20 connected by the wired connection unit 34 via the signal line 21. Proceeding to S5, an external event signal is generated with the event source address as the address of the wired sensor 20 for the format of the upstream event signal 70 in FIG.

  Subsequently, in step S6, it is determined whether or not a recovery signal has been received. After transmitting an event signal due to a fire in step S3 or step S5, a down event signal 72 using the command shown in FIG. When the recovery signal is received, the process proceeds to step S7, where it is checked whether or not the transmission destination address of the downstream event signal 72 is the self address. If it is the self address, the process proceeds to step S8 and the self recovery operation is performed.

  On the other hand, if the address is not the self address in step S7, the process proceeds to step S9, where it is determined that the address is for the externally connected wired sensor 20, and the process proceeds to step S10 to restore the wired sensor 20. An instruction signal is transmitted by wire to perform a recovery operation. In addition, when the recovery instruction signal for the self address is received, the recovery operation of the wireless sensor connected to the self may be performed together with the recovery operation of the self.

  In step S11, it is checked whether or not a test instruction signal has been received. When a test instruction signal is received, it is determined in step S12 whether or not it is a self address. If it is a self address, the process proceeds to step S13. Perform test operation.

On the other hand, when the own address is Tsu cry in a step 11, a test instruction signal to the wired transmitting to perform a test operation on the wired sensor 20 in step S14. Note that when a test instruction signal for its own address is received, a test operation for a wireless sensor connected to itself may be performed together with its own test operation.

  When the test instruction in step S13 or step S14 is completed, the acquisition of the test result is checked in step S15. When the test result is acquired, the process proceeds to step S16, and the test result is wirelessly transmitted.

  In the wireless transmission of the test, the test result of the test performed by the test operation or the test result sent from the wired sensor 20 is set in the event content of the upstream event signal 70 shown in FIG. Send. Further, the test result is displayed on the display unit 36 in step S16. The display of the test result may be only the self test result, or both the self test result and the test result received from the wired sensor 20 may be displayed.

  FIG. 5 is a block diagram showing another embodiment of the wireless sensor according to the present invention. In this embodiment, only the upstream event signal is transmitted to the wireless reception repeater 12, and the downstream event signal is transmitted. Is not received.

The wireless sensor 16 of the embodiment of FIG. 5 includes only the transmission circuit 40 in the wireless communication unit 26 and does not have a reception circuit, and therefore can only transmit an upstream event signal to the wireless reception repeater 12. In addition, since the wired connection unit 56 has only the reception circuit 48 and does not have a transmission circuit, an instruction signal cannot be transmitted to the wired sensor 20. In addition, the point which provided the power output part 50 in the wired connection part 56 is the same as embodiment of FIG.

  The processor 24 is provided with functions of an abnormality monitoring unit 52 and an external event processing unit 54. The abnormality monitoring unit 52 reads, for example, a smoke detection signal detected by the sensor unit 30 from the AD conversion port, compares it with, for example, a preset fire threshold value, determines a fire when the fire threshold value is exceeded, and determines the fire as the event content Is transmitted from the transmission circuit 40 of the wireless communication unit 26 to the wireless reception repeater 12 of FIG.

  The external event processing unit 54 receives the event signal transmitted by the fire detection in the wired sensor 20 connected to the outside via the signal line 21 by the reception circuit 48 of the wired connection unit 34. The occurrence of an event due to the fire detection of the sensor 20 is determined, and the upstream event signal indicating the external event content is transmitted from the wireless communication unit 26 to the wireless reception repeater 12 shown in FIG.

  At this time, when receiving an event signal from the wired sensor 20, the external event processing unit 54 identifies the address, adds the address of the identified wired sensor 20, and transmits the occurrence of the fire event to the outside. .

Here, since the wireless sensor 16 of FIG. 5 can not receive the down Ri signals, as in the embodiment of FIG. 2, in response to an instruction by the recovery command and test command downlink event signal from the radio reception repeater 12 Recovery control and test control cannot be performed.

  Therefore, the wired sensor 20 connected via the wireless sensor 16 and the signal line 21 is a self-recovering sensor. When the smoke concentration or temperature detected by the sensor unit 30 exceeds a predetermined threshold, the self-restoring type sensor determines a fire and transmits an event signal indicating the fire. Returning to the normal monitoring state, no external recovery instruction is required.

  For the sensor test, a fire detection operation is performed on a trial basis depending on whether smoke actually flows in or overheats using a test jig. The transmission of the test result is the same as the transmission of the upstream event signal indicating the fire event by the abnormality monitoring unit 52 for the self test, and the test of the wired sensor 20 connected by the signal line 21 is an external event. This is the same as the transmission of the upstream event signal indicating the external event content by the processing unit 54. In response to the transmission of an upstream event signal indicating a fire due to a test, the test result is received and displayed by setting a test mode on the P-type receiver 10 side.

  In addition to fire tests, internal self-diagnosis tests may be performed. In addition, various alarm devices described later include a test instruction operation unit that integrally performs a pseudo fire test and an internal self-diagnosis test, and each alarm device receives an operation of the test instruction operation unit. A test may be conducted.

  In the above embodiment, a wireless sensor is taken as an example of a wireless alarm device. However, the wireless alarm device in the present invention is not limited to a wireless sensor, and gas leakage In addition, an appropriate wireless alarm device that detects and transmits wirelessly by detecting intrusion, various types of failure information, device status, and the like is included.

  In addition, as shown in FIG. 1, the above embodiment takes an example of a disaster prevention monitoring system installed in a building or the like. However, as a residential alarm device that outputs an alarm by an alarm device used for a house itself. Similarly, with known wireless alarms for residential and apartment buildings, a wired and wireless mixed system with wired alarms is provided for places where radio waves are difficult to reach by providing wired connections. It can be.

  Moreover, although the above-described mobile phone takes a P-type system for alarming in units of lines, the present invention is also applied to a P-type addressable system and R-type system for alarming in units of individual alarm devices. be able to. In these cases, the wireless reception repeater 12 identifies the address of each wireless sensor 16, and the transmission of the wiring 18-1 to 18-3 with the receiver includes address information for each line (system). A system capable of transmitting and / or receiving signals may be used, and the P-type receiver 10 may be an R-type receiver.

Further, the present invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

Explanatory drawing showing a wireless disaster prevention monitoring system using a wireless sensor according to the present invention 1 is a block diagram illustrating an embodiment of a wireless sensor according to the present invention. Explanatory drawing which showed the format of the up event signal and the down event signal in the wireless sensor of FIG. The flowchart which showed the sensor process by the wireless sensor of FIG. The block diagram which showed other embodiment of the wireless sensor by this invention.

Explanation of symbols

10: P-type receiver 12: Wireless reception repeater 16: Wireless sensor 18: Sensor line 20: Wired sensor 22: Duct 24, 60: Processor 26: Wireless communication unit 28: Antennas 30, 64: Sensor unit 32: Memory 34, 62: Wired connection unit 36, 66: Display unit 38: Battery power source 40, 46: Transmission circuit 42, 48: Reception circuit 50: Power output unit 52: Abnormality monitoring unit 54: External event processing unit 56: Recovery control unit 58: Test control unit 70: Up event signal 72: Down event signal

Claims (6)

In wireless alarm device for outputting an alarm from the wired receiver connected to the repeater by wirelessly transmitting abnormal event signal to RELAY device when detecting abnormalities,
A wired connection for connecting other alarm devices via a signal line; and
When an external event signal from another alarm device is received via the wired connection unit, when an event occurrence indicating an abnormality in the other alarm device is determined, the abnormal event signal is wirelessly transmitted to the repeater An external event processing unit,
A power output unit for supplying power from the battery mounted on the device to the other alarm device via the signal line;
Equipped with a,
When the other alarm device is capable of supplying power by itself, the power output unit maintains a connection of the signal line and switches to a state in which power from the battery is not supplied to the other alarm device. wireless alarm device, characterized in that it comprises a.
The wireless alarm device according to claim 1, wherein the external event processing unit identifies an address of the other alarm device when the external event signal is received from the other alarm device, and the identified address. A wireless alarm device that wirelessly transmits an abnormal event signal to which the signal is added to the repeater.
In wireless alarm device according to claim 1, further comprising upon receiving a restoration instruction for the repeater or al, it sends another restoration instruction signal to the alarm device and the wired connection with recovering the self-healing A wireless alarm device comprising a control unit.
The wireless alarm device according to claim 3 , wherein when the recovery instruction is received, the recovery control unit identifies an address of an alarm device to be recovered, and the identified recovery target is self. Recovers itself, and when the identified recovery target is another alarm device connected by wire, sends a recovery instruction signal to the recovery target alarm device.
In wireless alarm device according to claim 1, further comprising the upon receiving the test order of the repeater or al, sends another test instruction signal to the alarm unit described above wired connection with testing its own status and, wireless alarm devices, characterized in that it comprises a test control unit which transmits the test results of the self-test results and the other alarm device to the repeater.
6. The wireless alarm device according to claim 5 , wherein the test control unit displays a self test result or a self test result and a test result of the other alarm device on a display unit. Type alarm.

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