JP2009015480A - Wireless receiver and emergency wireless notification system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless receiver capable of certainly notifying a monitoring center device about emergency notification of a plurality of wireless alarms. <P>SOLUTION: This wireless receiver 5 receives an alarm signal from the wireless alarm (illustrated by a fire alarm 6) wirelessly randomly outputting the alarm signal showing a warning phenomenon when detecting an abnormal state, and outputs the alarm signal to the monitoring center device 1 connected by a network line, performing monitoring. The wireless receiver 5 has: a warning phenomenon decision means 52 deciding whether a received signal is the alarm signal or not; a calling means 53 outputting a center calling signal to the monitoring center device 1 when it is decided that the signal is the alarm signal by the warning phenomenon decision means 52, and receiving a response signal from the monitoring center device 1; and a lock means 54 locking the output of the center calling signal to the calling means 53 after receiving the response signal by the calling means 53. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a radio receiver and an emergency radio notification system including the radio receiver, a radio alarm device, and a monitoring center device.

  Conventionally, a local wireless emergency system is constructed by a wireless alarm such as a wireless fire alarm and a wireless receiver. For example, Patent Documents 1-3 include a plurality of slave units connected to a fire detector, a master unit that receives a transmission signal from the slave unit and notifies a receiver of an abnormal state via a transmission path, and a warning. A wireless alarm system comprising a receiver for outputting a sound and displaying it is disclosed.

In recent years, a global emergency wireless notification system has been constructed in which an alarm signal from a wireless alarm device is received by a receiver and further notified to a monitoring center device via a line.
Japanese Patent No. 2902043 Japanese Patent No. 2902078 Japanese Patent No. 27987979

  However, such a global emergency radio notification system requires a communication processing time between the radio receiver and the monitoring center device as compared with the local radio alarm system. You can't just do it.

  Therefore, especially when the communication speed between the wireless receiver and the monitoring center device is slower than the communication speed between the wireless receiver and the wireless alarm device, communication congestion occurs between the wireless receiver and the monitoring center device. It will be. In addition, in the case of a system composed of a plurality (ten or more) of wireless alarm devices, a wireless receiver is activated in order to respond to alarm signals (also called call request signals) coming from the wireless alarm devices. When a call is executed, communication congestion occurs between the wireless receiver and the monitoring center device. As a result, there is a possibility that an emergency call from the wireless alarm device cannot be reliably reported to the monitoring center device.

  In addition, wireless communication between the wireless alarm device and the wireless receiver employs a type that performs continuous communication in one direction, while communication between the wireless receiver and the monitoring center device is bidirectional communication. Is adopted. Because of the difference in communication methods, the communication speed between the wireless receiver and the monitoring center device is often slower than the communication speed between the wireless receiver and the wireless alarm device. May not be reliably reported to the monitoring center device.

  The present invention has been made in view of the actual situation as described above, and provides a wireless receiver capable of reliably reporting an emergency notification of a plurality of wireless alarm devices to a monitoring center device, and wireless reception thereof. The purpose of the present invention is to provide a wireless emergency call system equipped with an alarm device, a wireless alarm device, and a monitoring center device.

  In order to solve the above-described problems, the first technical means of the present invention receives an alarm signal from a wireless alarm device that outputs an alarm signal that randomly indicates an alarm event wirelessly when an abnormal state is detected. A warning receiver that outputs the warning signal to a monitoring center device connected to a network line for monitoring, and determines whether or not the signal received from the wireless alarm device is an warning signal. An event determining means; and a calling means for outputting a center calling signal to the monitoring center apparatus and receiving a response signal from the monitoring center apparatus when the warning event determining means determines the alarm signal. And a lock means for locking the output of the center calling signal to the calling means after receiving the response signal by the calling means.

  The second technical means measures the time when the warning signal is received in the first technical means, and unlocks the lock by the locking means on condition that the warning signal is not received for a predetermined time or longer. It is characterized by having means.

  A third technical means is an emergency radio notification system comprising the radio receiver in the first or second technical means, the radio alarm device, and the monitoring center device.

  According to the wireless receiver according to the present invention, it is possible to reliably notify an emergency notification of a plurality of wireless alarm devices to the monitoring center device.

  The wireless receiver according to the present invention constitutes an emergency wireless notification system together with a wireless alarm device and a monitoring center device. In the following, a wireless residential fire alarm will be described as an example of a wireless alarm device (wireless alarm device). However, in a wireless gas leak alarm device or a wireless sensor device that can be added to an emergency wireless notification system. The same applies. In other words, as wireless alarm devices, various sensors such as constant temperature wireless fire alarms and smoke wireless fire alarms equipped with heat detection sensors and smoke detection sensors, and gas leak alarms equipped with gas detection sensors, etc. Various wireless alarm devices equipped with equipment can be applied. Since this wireless alarm device only needs to be able to transmit an alarm signal wirelessly, it can also be said to be a wireless alarm transmitter.

  FIG. 1 is a schematic diagram showing a configuration example of an emergency radio notification system according to the present invention. As shown in FIG. 1, an emergency radio notification system (hereinafter referred to as the present system) according to the present invention includes a monitoring center device (hereinafter referred to as a monitoring center) 1, a modem 2, a public communication network 3, and a transmission device (common type). NCU) 4) Wireless receiver (radio reporting device) 5 and n (n ≧ 1) wireless residential fire alarms (hereinafter simply referred to as fire alarms) 6 installed in the user's house Composed.

  The monitoring center 1 is an apparatus for the service provider to monitor. The monitoring center 1 includes, for example, an arithmetic processing unit such as a CPU, a program / data storage area such as a ROM, an EEPROM, and a hard disk, a work area such as a RAM when executing a program, a communication I / F, and an input / output I / F. It can be configured by a general-purpose computer (PC or server) configured, and can be connected to the public communication network 3 by a modem 2 connected to a communication I / F. Further, the common type NCU 4 is also connected to the public communication network 3, whereby the monitoring center 1 can communicate with the common type NCU 4 through the network line such as the public communication network 3.

  In this system, when the fire alarm 6 installed at the user's home is judged to have fallen into a dangerous event such as detecting an abnormal condition requiring emergency such as a fire, that is, when a warning event such as a fire is detected, A call is immediately made to the wireless receiver 5, and a unidirectional alarm signal indicating a warning event such as a fire is wirelessly transmitted. Each of the n fire alarm devices 6 wirelessly transmits an alarm signal through a channel (ch) assigned in advance.

  Here, the fire alarm device 6 wirelessly transmits an alarm signal at an interval of, for example, 1 to 60 seconds by a random call method. That is, the fire alarm device 6 performs continuous transmission at random transmission intervals (for example, 1 to 60 seconds) while a fire is detected and the event continues.

  In addition, the fire alarm device 6 may send a warning signal corresponding to a battery exhaustion or failure as a warning event other than a fire, and may send a signal such as a periodic report or a test report as another event.

  The wireless receiver 5 receives a unidirectional signal such as an alarm signal from the fire alarm 6. Therefore, the wireless receiver 5 includes wireless receiving means 51 that receives signals (alarm signals and other signals) from the fire alarm device 6. As described above, the random transmission method is adopted for the wireless transmission control of the fire alarm device 6, and the wireless reception means 51 also performs reception control corresponding to the method, for example, dozens of fire alarm devices 6. It is possible to minimize the interference with each other even if they are operated simultaneously. In addition, especially when a battery type is adopted as the fire alarm device 6, a configuration is adopted in which security wireless communication between the fire alarm device 6 as a transmitter and the wireless receiver 5 can be executed with low power. It is desirable to do.

  Then, the wireless receiver 5 outputs the received signal to the monitoring center 1 via the common NCU 4. Here, the common NCU 4 has a serial I / F (8-bit I / F), and is connected to the I / F on the wireless receiver 5 side by this I / F. The common NCU 4 may be installed in a user's house (dwelling unit) in which n radio receivers 5 are installed. In addition, the common type NCU4 functions as a transmission device for meter reading when the wireless alarm device is not a fire alarm device but an alarm device such as a gas leak attached to or incorporated in a meter such as a gas meter. To do.

  The fire report output in this way is confirmed by the service provider at the monitoring center 1. Based on the confirmation, the service provider contacts the contact point designated by the user and the nearby fire department. In addition, the service provider obtains information other than the fire report and manages the equipment installed in the user's home.

  Next, the alarm signal output process to the monitoring center 1 will be described focusing on the process in the wireless receiver 5. When the wireless receiver 5 receives a call from the fire alarm device 6 by the wireless receiver 51, the wireless event detector 52 determines whether the signal transmitted from the fire alarm 6 is an alarm signal. Is provided.

  Further, the radio receiver 5 outputs a center call signal to the monitoring center 1 and receives a response signal from the monitoring center 1 when the warning event determination means 52 determines that the alarm signal is received. Is provided. The calling means 53 transmits the center calling signal corresponding to the alarm signal to the 8-bit I / F of the common NCU 4 by an 8-bit telegram, thereby passing through the public communication network 3 connected to the common NCU 4. Then, a call is made to the monitoring center 1 that is an emergency call target. The center calling signal includes information that allows the monitoring center 1 to read the warning event indicated by the received warning signal, and the calling means 53 monitors the warning signal that is security information of the fire alarm device 6. It can be said that the data is transferred to the center 1.

  In this way, the wireless receiver 5 can send a report to the monitoring center 1 via the common NCU 4 by wired communication (may include wireless communication as a part).

  However, since the fire alarm 6 keeps transmitting as long as a warning event such as a fire continues, if it is not managed by the wireless receiver 5 side, it will continuously call the monitoring center 1 and occupy the line. This will cause traffic congestion.

  Therefore, the wireless receiver 5 according to the present invention includes a lock unit 54 that automatically locks the output of the center call signal to the call unit 53 after the response signal is received by the call unit 53. . The lock unit 54 locks the calling unit 53 so that the call from the fire alarm device 6 that has already notified the monitoring center 1 is not reported again.

  The lock means 54 receives a call from the first fire alarm device 6 and notifies the monitoring center 1 normally, and then notifies the monitoring center 1 of the first wireless call coming from the next. Do not execute. Also, when the kth (k ≦ n) th call that has not been made so far is received, the monitoring center 1 is reported normally, and then the next kth radio call is monitored. The report to the center 1 is not executed.

  In this way, the wireless receiver 5 makes a center call (center notification) if the received alarm signal is not reported to the monitoring center 1, and if the center notification has already ended normally, the lock means 54 automatically The center function is not notified by the lock function. By such an automatic lock function of the wireless receiver 5, the information on the fire alarm device 6 can be smoothly transferred between the wireless receiver 5 and the monitoring center 1 without traffic congestion. In addition, this automatic lock function can prevent not only reporting that has already been reported but also reporting the fire alarm 6 to the monitoring center 1 side.

  In addition, if there is no alarm signal by radio call from the fire alarm device 6 for a certain time longer than the transmission interval of the fire alarm device 6 (for example, 2 minutes or more), it is determined that there is no warning event such as a fire event. it can. Therefore, in such a case, it is preferable that the wireless receiver 5 releases the locked state of the center notification.

  Therefore, it is preferable that the wireless receiver 5 includes the following unlocking means 55. The lock release means 55 measures the time when the alarm signal is received, and releases the lock by the lock means 54 on condition that the alarm signal is not received for a predetermined time or longer.

  By providing the unlocking means 55, the calling means 53 can notify the center from the next fire call after unlocking. Therefore, the information of the fire alarm device 6 can be transferred to the monitoring center 1 even after being locked once by the automatic unlocking function of the unlocking means 55. Furthermore, since the wireless receiver 5 can be automatically reset without adopting a two-way communication method between the fire alarm 6 and the wireless receiver 5, management of the fire alarm 6 is facilitated. .

  The wireless receiver 5 is preferably configured to receive a warning signal that is continuously called like a fire call and to output a warning sound. It is preferable to continue outputting this voice even after the center report is normally completed. If the warning signal is not received for a certain time longer than the transmission interval of the fire alarm device 6, the sound output may be stopped simultaneously with the unlocking by the unlocking means 55.

  The calling unit 53 may execute a similar call even when a signal other than the alarm signal is received from the fire alarm device 6. In this case, the calling unit 53 is a target of the locking unit 54 or the unlocking unit 55. You don't have to.

  FIG. 2 is a diagram for explaining an example of a notification method in the emergency radio notification system of FIG. First, for example, when a fire is detected by ten or more fire alarm devices 6, each fire alarm device 6 performs continuous transmission at a random transmission interval (for example, 1 to 60 seconds) while the event continues. For simplicity, a case where an alarm signal is issued from one fire alarm device 6 will be described as an example. However, the wireless receiver 5 is connected to receive signals from, for example, a dozen fire alarms 6, and the communication time for one notification is determined to be, for example, 2 seconds. What is necessary is just to perform with respect to the alarm signal from the fire alarm 6.

  When the wireless receiver 5 receives the alarm signal from the same fire alarm device 6 a predetermined number of times (illustrated by 3 times) within a predetermined time (T1) by the wireless receiver 51 (steps S1 to S3), the warning event determination unit 52 is determined as an alarm from the fire alarm 6. Here, it is only necessary to record the number of calls from the same fire alarm device 6 and check the call interval.

  The wireless receiver 5 determined as an alarm makes a center call by the call means 53 outputting a center call signal, and notifies the monitoring center 1 through the public line from the common NCU 4 connected by the I / F. (Step S4). The wired communication between the wireless receiver 5 and the monitoring center 1 requires a communication time of, for example, 30 seconds per notification. By receiving a call from the same fire alarm device 6 a plurality of times (here, three times) and then reporting to the center, erroneous reporting can be prevented.

  The monitoring center 1 confirms that the report from the common type NCU 4 (step S5) has been received, and outputs a response signal to the common type NCU 4 through the public line (step S6). The common type NCU 4 passes through the I / F or the like. A response signal is output to the wireless receiver 5 (step S7).

  When the response signal is received, the lock unit 54 locks the calling unit 53 so as not to make a center call even if it receives an alarm signal from the fire alarm device 6 of the corresponding channel (step S8). As a result, a locked state in which the center call is not performed is established. The wireless receiver 5 in which the corresponding channel is locked does not output a center call signal to the monitoring center 1 even if it receives an alarm signal from the corresponding channel (steps S9 and S10).

  The unlocking means 55 is provided with a timer for measuring the time when an alarm signal is received, and the unlocking means 55 receives again an alarm signal from the corresponding channel (that is, an alarm signal from the fire alarm device 6 notified by the center). Then (when it is received for the fourth time in this example), the timer is reset. When the time measured by the timer exceeds a predetermined time (T2), the lock release means 55 determines that the warning event of the fire alarm device 6 of the corresponding channel has disappeared, and releases the locked state of the center call (step S11).

  The wireless receiver 5 performs the same processing as steps S1 to S10 even after unlocking. That is, when it is newly received three times within T1 time (steps S12 to S14), the calling means 53 makes a center call (step S15) and receives a response signal from the monitoring center 1 via the common NCU4. Sometimes (steps S16 to S18), the lock unit 54 locks the calling unit 53 (step S19), and even if there is a call from the fire alarm device 6 until the lock is released again (steps S20 to S22). ) Keep locked.

  FIG. 3 is a flowchart for explaining an example of notification processing (center notification processing) to the monitoring center by the wireless receiver of FIG. With reference to FIG. 3, the detail of the process of step S1-S8 of FIG. 2 is demonstrated.

  When receiving the signal from the fire alarm device 6, the wireless receiver 5 performs a wireless reception process (step S31). After the wireless reception process, the wireless receiver 5 determines whether communication with the fire alarm 6 is normal (step S32). If the communication between the wireless receiver 5 and the fire alarm 6 is abnormal (NO in step S32), the notification process is terminated.

  On the other hand, if the communication between the wireless receiver 5 and the fire alarm 6 is normal (YES in step S32), the stored communication record with the monitoring center 1 is read (step S33), and the fire alarm is issued. It is determined whether the channel held by the device 6 is locked (step S34). If the channel of the alarm signal received on the wireless receiver 5 side is in the locked state (YES in step S34), the calling process to the monitoring center 1 is terminated and the notification process is terminated. In this case, the center report lock release processing of the wireless receiver 5 described later in FIG. 4 is performed.

  If the channel of the alarm signal is not locked (NO in step S34), the number of receptions of the channel is incremented and updated (step S35). Further, it is determined whether or not the incremented number of receptions is greater than the predetermined number N (step S36). If it is N or less (in the case of NO in step S36), the alarm signal of the same channel cannot be determined to be a truly dangerous event, and there is a possibility of false alarms, so the reporting process to the monitoring center 1 is terminated.

  On the other hand, if the incremented number of receptions is equal to or greater than the predetermined number N (in the case of YES in step S36), the alarm signal from the channel is determined to be a dangerous event, and counting of the reception interval time of the channel is started. Then, a center call is made to perform center communication with the monitoring center 1 (step S38). In this way, the wireless receiver 5 that has been determined to be a warning event makes a center call, and notifies the monitoring center 1 through the public line from the common NCU 4 connected by the I / F.

  The monitoring center 1 confirms that the notification has been received, and outputs a response signal to the common NCU 4 through the public line, and the common NCU 4 outputs a response signal to the wireless receiver 5 through the I / F or the like. The wireless receiver 5 monitors the presence or absence of a response signal from the monitoring center 1 (step S39). If there is no response signal (NO in step S39), the radio receiver 5 makes a center call to the monitoring center 1 again (step S38). .

  When the wireless receiver 5 receives the response signal (YES in step S39), the communication information of the same channel is recorded assuming that the communication with the monitoring center 1 is normally performed (step S40). Further, the wireless receiver 5 sets the lock state so that the center call of the ch is not performed when the notification to the monitoring center 1 is ended in the alarm signal of the ch (step S41).

  FIG. 4 is a flowchart for explaining an example of the center report lock release processing by the wireless receiver of FIG. With reference to FIG. 4, the unlocking process in the wireless receiver 5 in the locked state by the process of step S41 in the case of YES in step S34 of FIG. 3 will be described in detail. This processing corresponds to the processing in steps S9 to S11 in FIG.

  When the wireless receiver 5 in the locked state described with reference to FIG. 3 receives the alarm signal from the fire alarm device 6 again, a wireless reception process is performed (step S51). After the wireless reception process, the wireless receiver 5 determines whether the communication with the fire alarm device 6 is normal (step S52). If the communication between the wireless receiver 5 and the fire alarm device 6 is abnormal (NO in step S52), the reporting process is terminated.

  On the other hand, if the communication between the wireless receiver 5 and the fire alarm 6 is normal (YES in step S52), the stored communication record with the monitoring center 1 is read (step S53), and the fire alarm is issued. It is determined whether the channel held by the device 6 is locked (step S54). If the channel is not in the locked state (NO in step S54), the process is terminated, and the process proceeds to the process of FIG. 3 described above, and a notification process between the wireless receiver 5 and the monitoring center 1 is performed.

  If the channel of the alarm signal received on the wireless receiver 5 side is locked (in the case of YES at step S54), the alarm signal from the timer that started counting at step S37 in FIG. Then, the reception interval time of the same channel of the timer that is activated at the time of reading is read (step S55). Subsequently, it is determined whether or not the reception interval time of the same channel measured by the timer is longer than a predetermined time T (step S56).

  If the reception interval time of the same channel is equal to or less than the predetermined time T (NO in step S56), the center notification unlocking process of the wireless receiver 5 is terminated and the count of the reception interval time of the same channel is cleared (step S59). ).

  On the other hand, if the reception interval time of the same channel is longer than the predetermined time T (in the case of YES in step S56), there is no danger event on the fire alarm 6 side that owns the same channel or the danger event has been resolved. The communication report of the center report of the same channel is cleared (step S57), and the center report of the same channel is transmitted so that the center can be called to the monitoring center 1 again by the alarm signal of the fire alarm 6 possessing the same channel. The lock is released (step S58).

  As described above, the radio receiver 5 side receives the alarm signal from the fire alarm 6 and confirms that the center call is made to the monitoring center 1, and the locked state in which the center call is not made to the monitoring center 1. By maintaining the above, when alarm signals from a plurality of fire alarm devices 6 are received, alarm information can be smoothly transferred between the wireless receiver 5 and the monitoring center 1. As a result, even if a plurality of fire alarms 6 are activated at the same time, mutual communication interference is minimized, and crosstalk can be eliminated. That is, in the wireless receiver 5 of the present invention, it is possible to reliably notify the monitoring center 1 of emergency notifications from a plurality of fire alarms 6. Furthermore, since the center call is not repeatedly performed by maintaining the locked state, the same data is prevented from being sent a plurality of times, and the system management of the monitoring center 1 is facilitated.

  Further, this system is composed of only the wireless receiver 5 provided with the lock unit 54 (and the lock release unit 55) together with the existing fire alarm 6, the common NCU 4, and the monitoring center 1, so that it is very inexpensive. Can be configured in the system. In other words, a simple emergency wireless security system can be constructed with a minimum capital investment by adding an inexpensive wireless receiver 5 and fire alarm 6 with an existing wired meter reading system, which has added value. Further, in this system, the fire alarm device 6 only needs to have a built-in transmission function, and the wireless receiver 5 only needs to have a built-in reception function for radio, so a cheaper system can be configured. .

It is the schematic which shows the structural example of the emergency radio notification system which concerns on this invention. It is a figure for demonstrating an example of the alerting | reporting method in the emergency radio alert system of FIG. It is a flowchart for demonstrating an example of the report process (center report process) with respect to the monitoring center by the radio | wireless receiver of FIG. It is a flowchart for demonstrating an example of the center report lock cancellation | release process by the radio | wireless receiver of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Monitoring center apparatus (monitoring center), 2 ... Modem, 3 ... Public communication network, 4 ... Transmission apparatus (common type NCU), 5 ... Wireless receiver, 6 ... Wireless house fire alarm (fire alarm) , 51 ... wireless reception means, 52 ... warning event determination means, 53 ... calling means, 54 ... lock means, 55 ... lock release means.

Claims (3)

  When an abnormal state is detected, the alarm signal is received from a wireless alarm device that randomly outputs an alarm signal indicating an alarm event wirelessly, and the alarm signal is connected to a monitoring center device connected by a network line to perform monitoring. A wireless receiver that outputs a warning event determining means for determining whether or not a signal received from the wireless alarm device is an alarm signal; and when the warning event determining means determines that the alarm signal Outputting a center call signal to the monitoring center device and receiving a response signal from the monitoring center device; and after receiving the response signal by the calling device, A wireless receiver comprising: locking means for locking an output of a calling signal.   2. The apparatus according to claim 1, further comprising: a lock release unit that measures time when receiving the alarm signal and releases the lock by the lock unit on condition that the alarm signal is not received for a predetermined time or more. Wireless receiver.   An emergency radio notification system comprising the radio receiver according to claim 1, the radio alarm device, and the monitoring center device.

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