JP2001023064A - Monitor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the efficiency of the communication traffic of a single monitor center for plural monitoring devices by increasing wiring efficiency between plural monitoring devices and plural abnormality sensors. SOLUTION: Each of plural abnormality sensors 15aa-15el is connected with only one of monitoring devices 11a-11e, and the reception of an abnormality signal from each abnormality sensors 15aa-15el is communicated through the communication of the monitoring devices 11a-11e. In this case, the priority order of the plural monitoring devices 11a-11e is preliminarily decided, and only the monitoring device with the highest priority order among the monitoring devices 11a-11e which do not break down reports it to a monitor center 12 in behalf of the others.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention monitors a plurality of objects to be monitored by a plurality of monitoring devices, and, when each monitoring device detects any abnormal situation, notifies a monitoring center that is separated from these monitoring devices. A monitoring system adapted to do so.

[0002]

2. Description of the Related Art Generally, as shown in FIG.
A plurality of monitoring targets are monitored by a plurality of monitoring devices 1a, 1b,... 1e, and when each monitoring device 1a, 1b, 1e detects some abnormal situation, a monitoring center separated from these monitoring devices 1a, 1b,. 2, the monitoring center 2 can comprehensively monitor the abnormal situation at the plurality of bases 3a to 3d.

Each monitoring device 1a, 1b... 1e is connected to a monitoring camera 4a, 4b... 4e, respectively, and is provided with a plurality of predetermined abnormal sensors 5a such as a fire alarm and a thermal sensor.
a, 5ab, 5ac, 5ba, 5bb, 5bc, ..., 5
When an abnormality of a monitoring target is detected by ea, 5eb, 5ec, imaging by each of the monitoring cameras 4a, 4b,... 4e is started.

Here, the abnormal sensors 5aa, 5ab, 5a
c, 5ba, 5bb, 5bc, ..., 5ea, 5eb, 5
ec is not always connected to a single monitoring device 1a, 1b... 1e, but is connected to a plurality of monitoring devices 1a, 1b. Connected to. Specifically, as shown in FIG. 3, one abnormal sensor 5aa is connected not only to the first monitoring device 1a but also to the second and third monitoring devices 1b and 1c. Output an abnormal signal to the monitoring devices 1a, 1b, 1c. Similarly,
Other abnormal sensors 5ab, 5ac, 5ba, 5bb, 5b
c,..., 5ea, 5eb, 5ec are also a plurality of monitoring devices 1
1e, and outputs an abnormal signal to the plurality of monitoring devices 1a, 1b... 1e when an abnormal situation is detected.

[0005] The monitoring devices 1a, 1 at each of the bases 3a to 3d.
1b and the monitoring center 2 are connected through a wide area information network (WAN) 6 such as a general public telephone network, but each of the monitoring devices 1a, 1b.
The communication is performed with respect to.

[0006]

In the conventional monitoring system, each of the monitoring devices 1a, 1b... 1e communicates with the monitoring center 2 independently. It doubled by the number of installations 1b... 1e, and its economic efficiency could not be said to be efficient. In addition, since the monitoring center 2 takes over communication with many monitoring devices 1a, 1b,... 1e, the occupation time of the communication function in the monitoring center 2 becomes enormous. 2 may not be able to communicate with each other.
There is a request to suppress communication traffic between a, 1b... 1e and the monitoring center 2.

In each of the bases 3a to 3d, the abnormality sensors 5aa, 5ab, 5ac, 5ba, 5bb, 5
bc, ..., 5ea, 5eb, 5ec and the monitoring devices 1a, 1
b ... 1e are connected in many-to-many, so that each abnormal sensor 5aa, 5ab, 5ac, 5ba, 5bb, 5bc,
, 5ea, 5eb, 5ec, the wiring layout for distributing the abnormal signals to the monitoring devices 1a, 1b,.

Accordingly, an object of the present invention is to provide a monitoring system capable of suppressing communication traffic between a monitoring device at each site and a monitoring center and efficiently reducing the arrangement between an abnormal sensor and a monitoring device at each site. It is to provide a system.

[0009]

Means for Solving the Problems In order to solve the above problems,
According to the first aspect of the present invention, a plurality of monitoring targets are monitored by a plurality of monitoring devices, and when each monitoring device detects some abnormal situation, a notification is sent to a monitoring center that is separated from these monitoring devices. Monitoring system adapted to
The plurality of monitoring devices, an intercommunicator that connects the plurality of monitoring devices to be able to communicate with each other, and the monitoring center that is connected to the intercommunicator through a predetermined communication network, The monitoring device is configured such that a priority order among the plurality of monitoring devices is determined in advance, and transmits predetermined information related to monitoring in each of the monitoring devices to another monitoring device through the intercommunicator, and relatively. Only a single monitoring device having a high priority is notified of the predetermined information related to the monitoring to the monitoring center through the intercommunicator and the communication network on behalf of all other monitoring devices. is there.

According to a second aspect of the present invention, each of the monitoring devices has a failure determination unit for mutually detecting a failure with another monitoring device, and represents each of the other monitoring devices. The single monitoring device that reports predetermined information related to the monitoring to the monitoring center through the intercommunicator and the communication network excludes the monitoring device determined to be faulty by the fault determination unit. The single monitoring device having the highest priority among the remaining monitoring devices is selected.

According to a third aspect of the present invention, the predetermined information relating to the monitoring includes information indicating that an abnormal signal has been given from a plurality of abnormal sensors for detecting a predetermined abnormal state,
Each of the abnormality sensors is connected to only one of the monitoring devices, and when the abnormality signal is provided from each of the abnormality sensors, the monitoring device determines that at least the abnormality signal is provided. Is transmitted to all the monitoring devices.

According to a fourth aspect of the present invention, at least one surveillance camera is connected to the surveillance device, and the surveillance device is provided with a video recording unit for recording a video taken by the surveillance camera. And the monitoring device, when the abnormality signal is given from each of the abnormality sensors, the fact that the abnormality signal is given, and a monitoring device identification code for identifying the monitoring device to which the abnormality signal is given, An abnormal sensor identification code for identifying the abnormal sensor to which the abnormal signal has been given is transmitted to all other monitoring devices, and further, from another monitoring device, the fact that the abnormal signal has been given, When the monitoring device identification code and the abnormal sensor identification code are given, the data is compared with a correspondence table stored in a predetermined storage unit in advance. In which the captured image is to be recorded on the image recording unit in the surveillance camera.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <Configuration> FIG. 1 is a block diagram showing a monitoring system according to an embodiment of the present invention.
This monitoring system is configured to store a plurality of monitoring targets at a plurality of bases 10a to 10d respectively with a plurality of monitoring devices 11a to 1d.
1e, and sends a notification to a monitoring center 12 that is separated from the monitoring center. As shown in FIG. 1, a plurality of monitoring devices 11a to 11e and all of these monitoring devices 11a to 11e are A single router (intercommunicator) 13 for connecting to each other, and each of the monitoring devices 11a to 11
e, the monitoring cameras 14a to 14e of the analog NTSC system or the like respectively connected to the monitoring devices 11a to 1e.
Abnormality sensors 15aa, 15ab to 15a, such as fire alarms, which are respectively connected to 1e and detect an abnormality of a monitoring target.
1, 15ba, 15bb to 15bl, 15ca, 15c
b to 15cl... 15ea, 15eb to 15el, and a wide area information network (WAN) 1 such as a router 13 and a general public telephone network.
6. Monitoring device 1 of each base 10a to 10d through 6.
And a monitoring center 12 for receiving reports from 1a to 11e.

Each monitoring device 11a at each base 10a to 10d
11e are all connected to a single router 13 as described above, whereby the abnormality sensors 15aa, 15ab to 15al, 1 connected to the respective monitoring devices 11a to 11e.
5ba, 15bb-15bl, 15ca, 15cb-1
5cl... 15ea, 15eb-15el, and various information such as various situations such as the failure status of each of the monitoring devices 11a-11e are mutually reported.

That is, each of the monitoring devices 11a to 11e
, A LAN controller that performs LAN communication through the router 13 or a modem or IS that performs communication with the outside.
A data transmitting / receiving unit 20 such as a DN terminal adapter (TA), a calling unit 21 that transmits a calling signal to the other monitoring devices 11a to 11e through the data transmitting / receiving unit 20, and a signal from the other monitoring devices 11a to 11e. A reply unit 22 that transmits a reply signal to the monitoring devices 11a to 11e of the transmission source of the call signal in response to the call signal, and a monitoring device 11a of the transmission destination that responds to the call signal transmitted from the call unit 21 And a failure determining unit 23 that determines a failure of the monitoring device 11a to 11e of the transmission destination when a reply signal is not received within a predetermined time from the monitoring device 11e. It should be noted that the outgoing call signal is provided with the device identification numbers (monitoring device identification codes) of the monitoring devices 11a to 11e of the call destination (destination), and the return signal is provided by the monitoring devices 11a to 11e of the transmission source. By assigning the device identification number (monitoring device identification code), the monitoring device 1 related to the failure
1a to 11e can be easily identified.

Each of the monitoring devices 11a to 11e is provided with an alarm receiving section 24 in which a plurality of (12) alarm input ports 24a to 24l are formed. Abnormal sensors 15aa, 15ab to 15al, 15ba,
15bb ~ 15bl, 15ca, 15cb ~ 15cl ...
15ea, 15eb to 15el can be connected. Therefore, for example, five monitoring devices 11a-1
1e, the five monitoring devices 11a to 11a
Alarm input port 24a of the alarm receiving unit 24 of 1e
A separate abnormality sensor 15 for a desired port of the
aa, 15ab-15al, 15ba, 15bb-15
bl, 15ca, 15cb to 15cl ... 15ea, 15
eb ~ 15el can be connected, so
In the monitoring devices 11a to 11e, a maximum of 60 (=
5 × 12) abnormal sensors 15aa, 15ab to 15a
1, 15ba, 15bb to 15bl, 15ca, 15c
b to 15cl... 15ea and 15eb to 15el can be used. Note that, in practice, all of these alarm input ports 24a to 24l are provided
aa, 15ab-15al, 15ba, 15bb-15
bl, 15ca, 15cb to 15cl ... 15ea, 15
Although it is not necessary to connect eb to 15el, here, for convenience of explanation, 60 alarm sensors 15aa, 15ab to 15al, 15ba, and 60ab are separately connected to all alarm input ports 24a to 24l of all monitoring devices 11a to 11e. Fifteen
bb ~ 15bl, 15ca, 15cb ~ 15cl ... 15
ea, 15eb to 15el are connected.

Here, any one of the alarm input ports 24a to 24l of the alarm receiving unit 24 is connected to the abnormality sensor 15a.
a, 15ab-15al, 15ba, 15bb-15b
1, 15ca, 15cb to 15cl ... 15ea, 15e
When an abnormal signal is received from b to 15el, the device identification numbers (monitoring device identification codes) of the monitoring devices 11a to 11e to which the alarm receiving unit 24 belongs and the numbers of the alarm input ports 24a to 24l that received the abnormal signal ( An abnormal sensor identification code) is transmitted to the other monitoring devices 11a to 11e through the data transmitting / receiving unit 20 and the router 13.

Further, each of the monitoring devices 11a to 11e has
Each of the monitoring cameras 14a to 14e is connected one by one, and ON / OFF switching control of the operation of each of the monitoring cameras 14a to 14e is performed by a camera control unit 25 installed in each of the monitoring devices 11a to 11e. ~
The video imaged at 14e is recorded in a video recording unit 26 such as an analog time lapse video in the monitoring devices 11a to 11e.

Each of the monitoring devices 11a to 11e has a storage unit 27 such as a ROM therein. As shown in Table 1 below, each of the monitoring devices 11a to 11e has an abnormality sensor 15aa, 15ab ~ 15al, 15ba, 15bb ~
15bl, 15ca, 15cb to 15cl ... 15ea,
Abnormal signal from 15eb-15el and surveillance camera 14a
The alarm imaging correspondence table 27a, which indicates the correspondence with the start of imaging (recording) of 14e to 14e, is stored in advance.

[0020]

[Table 1]

The alarm imaging correspondence table 27a is
Events that trigger the start of recording on the video recording unit 26 of the monitoring devices 11a to 11e having the alarm imaging correspondence table 27a are collected, and are different for each monitoring device 11a to 11e. 2
7a is stored. For example, when the alarm imaging correspondence table 27a shown in Table 1 above is stored in the storage unit 27 in the first monitoring device 11a, the first monitoring device 11a
The abnormal sensor identification codes of the alarm input ports 24a to 24l which received the abnormal signal in the alarm receiving unit 24, and the monitoring device identification codes transmitted from the other monitoring devices 11a to 11e through the router 13 and the data transmitting / receiving unit 20 are used. Are input to the abnormality-related determination unit 28 shown in FIG.
a (Table 1) to determine whether to start recording. In the specific example of Table 1, the first monitoring device 11a
In the abnormality-related determination unit 28, the first, fifth, and tenth alarm input ports 24a, 24 of the first monitoring device 11a
e, 24a connected to the abnormality sensors 15aa, 15a
e, 15aj, the abnormality sensors 15ba, 15bc, 15be connected to the first, third, and fifth alarm input ports 24a, 24c, 24e of the second monitoring device 11b, and the first and second abnormality sensors of the third monitoring device 11c. Abnormal sensor 1 connected to fifth and tenth alarm input ports 24a, 24e, 24j
5ca, 15ce, 15cj, the first, sixth and tenth alarm input ports 24a, 24f of the fourth monitoring device 11d.
Abnormal sensors 15da, 15df, 1 connected to 24j
5dj and the camera control unit 25 when an abnormal signal is given from the abnormal sensors 15ea, 15ec, 15ef connected to the first, third and sixth alarm input ports 24a, 24c, 24f of the fifth monitoring device 11e. Through this, the imaging of the first surveillance camera 14a is started, and the video is recorded on the video recording unit 26.

Each of the monitoring apparatuses 11a to 11e has a monitoring center notification unit 29 for communicating with the monitoring center 12 through the router 13. The priorities of the monitoring devices 11a to 11e are set in advance in relation to the other monitoring devices 11a to 11e, and only the monitoring devices 11a to 11e having relatively higher priorities are sent to the monitoring center notification unit 29. Functions effectively, and only the valid monitoring center reporting unit 29 communicates with the monitoring center 12 by the router 1.
Communication is performed through 3. Specifically, each monitoring device 11a
All monitoring devices 1 are stored in the storage units (ROM) 27 to 11e.
Priority number data 27b indicating the priority order of 1a to 11e is stored in advance, and the monitoring device 11a to 11e having the highest priority among the monitoring devices 11a to 11e in which the failure determination unit 23 determines that the failure is not in failure. Only the notification unit 29 for the monitoring center 11e functions effectively. For example, the monitoring devices 11a to 11 having the highest priority
e communicates with the monitoring center 12 through the router 13 unless the monitoring devices 11a to 11e fail. However, if any of the monitoring devices 11a to 11e having the highest priority has failed, the failure determination unit 23 detects the failure and the monitoring center notification unit 29 of the second priority monitoring device 11a to 11e is enabled. The monitoring devices 11a to 11e communicate with the monitoring center 12 through the router 13 instead of the monitoring devices 11a to 11e having the highest priority. Further, when both the first and second monitoring devices 11a to 11e have a failure,
As a substitute for these monitoring devices 11a to 11e, the monitoring center notification unit 29 of the third monitoring device 11a to 11e having the third priority functions effectively and communicates with the monitoring center 12 through the router 13. It has become.

<Operation> The operation of the monitoring system having the above configuration will be described. First, in each of the monitoring devices 11a to 11e, FIG.
, A certain time (for example, one minute) by the calling unit 21
Each time, a predetermined call signal is transmitted to all the other monitoring devices 11a to 11e via the router 13, and a corresponding time is waited for a predetermined time until a return signal is returned. In each of the monitoring devices 11a to 11e that has received the call signal, if this is a normal state, the reply unit 22 transmits a reply signal to the monitor device 11a to 11e that has transmitted the call signal. On the other hand, it is impossible for the monitoring devices 11a to 11e in which some trouble occurs during communication to return a reply signal. Therefore, when the monitoring devices 11a to 11e that have transmitted the calling signal do not receive the reply signal within a certain time, the failure determining unit 23 causes the monitoring devices 11a to 11e that have not received the reply signal to fail. Judge that there is.

Here, the fault monitoring devices 11a to 11a
e, the monitoring device 1 having the highest priority
The communication devices 1a to 11e communicate with the monitoring center 12 through the router 13 unless the monitoring devices 11a to 11e fail. However, when only the monitoring devices 11a to 11e having the highest priority have failed, the failure determination unit 23 detects the failure, and the monitoring center notification unit 29 of the second monitoring devices 11a to 11e has the second priority. The monitoring devices 11a to 11e function effectively, and communicate with the monitoring center 12 through the router 13 in place of the monitoring devices 11a to 11e having the highest priority.
In addition, both the first and second monitoring devices 1
When 1a to 11e fail, these monitoring devices 1
As a substitute for 1a to 11e, the monitoring center notification unit 29 of the third monitoring device 11a to 11e having the third priority functions effectively, and communicates with the monitoring center 12 through the router 13. That is, here, only the monitoring devices 11a to 11e having the highest priority among the monitoring devices 11a to 11e related to the failure communicate with the monitoring center 12 through the router 13.

Here, one of the monitoring devices 11a to 11
e, the alarm receiving unit 24 is connected to any of the abnormality sensors 15a.
a, 15ab-15al, 15ba, 15bb-15b
1, 15ca, 15cb to 15cl ... 15ea, 15e
When an abnormal signal is received from b to 15el, the device identification numbers (monitoring device identification codes) of the monitoring devices 11a to 11e to which the alarm receiving unit 24 belongs and the numbers of the alarm input ports 24a to 24l that received the abnormal signal ( Abnormal sensor identification code) and all other monitoring devices 11a-11
e, and communicate that effect. As a result, in all the monitoring devices 11a to 11e that have not failed, which alarm input port 24a to 2 of which monitoring device 11a to 11e.
It is possible to recognize whether an abnormal signal has been input to 41. In this case, the monitoring devices 11a to 11e having the highest priority order before the occurrence of the failure are notified of the occurrence of the abnormal situation and the monitoring by the data transmitting / receiving unit 20 and the router 13 by the operation of the monitoring center notification unit 29. Information including the device identification code and the abnormality sensor identification code is transmitted to all the monitoring devices 11a to 11a.
Notify the monitoring center 12 as a representative of 11e.

At this time, the abnormal signal is sent to the alarm input port 2
Monitoring devices 11a to 11e directly received from 4a to 24l
In the abnormality-related determining unit 28 shown in FIG. 2, the monitoring device identification codes of the monitoring devices 11a to 11e and the abnormality sensor identification codes of the alarm input ports 24a to 24l that have received the abnormality signals, and the alarm in the storage unit 27 By collating with the data of the imaging correspondence table 27a (Table 1),
It is determined whether recording should be started in the monitoring devices 11a to 11e.

On the other hand, an abnormal signal is sent to the alarm input port 24.
Monitoring devices 11a to 11 not directly received from a to 24l
e inputs the monitoring device identification code and the abnormality sensor identification code transmitted from the other monitoring devices 11a to 11e through the router 13 and the data transmission / reception unit 20 to the abnormality-related determination unit 28 shown in FIG. The association determination unit 28 determines whether recording should be started by collating with the alarm imaging correspondence table 27a (Table 1).

In the specific example of Table 1, in the abnormality-related determination section 28 of the first monitoring device 11a, the first, fifth, and tenth alarm input ports 24a, 24e,
Abnormality sensor 15aa, 15ae, 1 connected to 24j
In addition to 5aj, abnormality sensors 15ba, 15bc, 15be connected to the first, third, and fifth alarm input ports 24a, 24c, 24e of the second monitoring device 11b, and the first, fifth, and fifth monitoring devices 11c. Tenth alarm input port 2
Abnormal sensor 15c connected to 4a, 24e, 24j
a, 15ce, 15cj, the first of the fourth monitoring devices 11d,
Sixth and tenth alarm input ports 24a, 24f, 24
abnormality sensor 15da, 15df, 15d connected to j
j, and the camera control unit 25 when an abnormal signal is given from the abnormal sensors 15ea, 15ec, 15ef connected to the first, third, and sixth alarm input ports 24a, 24c, 24f of the fifth monitoring device 11e. The imaging of the first monitoring camera 14a is started through the
6 will be recorded.

As described above, in the monitoring system of this embodiment, the abnormality sensors 15aa, 15ab to 15al,
15ba, 15bb-15bl, 15ca, 15cb-
15cl... 15ea, 15eb to 15el monitoring device 1
The connection to 1a to 11e is not many-to-many, but is directly connected to any one of the monitoring devices 11a to 11e. When there is an abnormal signal, the monitoring devices 11a to 11e that have obtained the abnormal signal Since the data is transmitted to all the other monitoring devices 11a to 11e through the router 13,
Abnormality sensors 15aa, 15ab to 15al, 15ba,
15bb ~ 15bl, 15ca, 15cb ~ 15cl ...
15ea, 15eb to 15el and monitoring devices 11a to 11
The wiring layout with e is dramatically simplified as compared with the conventional monitoring system shown in FIG. 3, so that the routing space can be efficiently reduced and the routing work can be facilitated.

Further, priorities are set in advance among the plurality of monitoring devices 11a to 11e, and all the monitoring devices 11a to 11e are set.
1e is provided with a failure determination unit 23, and when the monitoring devices 11a to 11e with high priority are not in a failure state,
While the monitoring devices 11a to 11e having the highest priority perform notification to the monitoring center 12 on behalf of the monitoring device 12, when the monitoring devices 11a to 11e having the highest priority are in the failure state, the monitoring device 11a having the next highest priority in the normal state 11e make a report to the monitoring center 12 as a representative, so that communication costs are greatly reduced as compared with the conventional monitoring system which individually communicates with the monitoring center 2. . Further, compared to a case where each of the monitoring devices 11a to 11e individually sends a report to the monitoring center 12, the overhead related to the communication connection on the monitoring center 12 side can be greatly reduced, so that the occupation time of the communication function in the monitoring center 12 is reduced. The communication traffic between the monitoring devices 11a to 11e and the monitoring center 12 can be easily suppressed.

In the above embodiment, the monitoring camera 14
Although an example in which a to 14e are connected to each of the monitoring devices 11a to 11e is described, a plurality of monitoring cameras 14a to 14e are connected to some or all of the monitoring devices 11a to 11e. No problem.

In the above embodiment, the monitoring device 11
Any of the abnormal sensors 15aa, 15ab to 1 may be used as information related to communication between the a to 11e side and the monitoring center 12 side.
5al, 15ba, 15bb to 15bl, 15ca, 1
5cb to 15cl... 15ea and 15eb to 15el have been described with the information of the abnormal situation detected, but the failure status of each of the monitoring devices 11a to 11e and the monitoring cameras 14a to 1e have been described.
Other information such as a video taken in 4e may be reported, or two-way communication in which a predetermined operation instruction signal is transmitted from the monitoring center 12 to the monitoring devices 11a to 11e having the highest priority. May be performed. still,
The signals transmitted from the monitoring center 12 to the monitoring devices 11a to 11e include, for example, the monitoring cameras 14a to 14e.
An instruction signal or the like that arbitrarily selects a video image captured by e from the surveillance cameras 14a to 14e and requests transmission is suitable.

[0033]

According to the first aspect of the present invention, the priorities among a plurality of monitoring devices are determined in advance, and predetermined information related to monitoring by each monitoring device is transmitted to another monitoring device through an intercommunicator. Since only a single monitoring device having a higher priority is transmitted to the monitoring center and reports predetermined monitoring information to the monitoring center on behalf of all the other monitoring devices, Compared to the conventional monitoring system where the device communicates with the monitoring center independently, the communication cost is greatly reduced, and the overhead related to the communication connection on the monitoring center side can be significantly reduced. Occupancy time of the communication function can be reduced,
Communication traffic between each monitoring device and the monitoring center can be easily suppressed.

According to the second aspect of the present invention, the failure judging unit of each monitoring device mutually detects a failure of another monitoring device,
A single monitoring device having the highest priority is selected from among the remaining monitoring devices excluding the monitoring device determined to have failed, and the selected monitoring device represents all other monitoring devices. Then, the failure is notified to the monitoring center, so that the failure can be reported to the monitoring center without interruption even when a failure having a relatively high priority is caused.

According to the third aspect of the present invention, each of the plurality of abnormality sensors is connected to only one of the monitoring devices, and an abnormality signal is given from each abnormality sensor by communication between the monitoring devices. Is transmitted to all other monitoring devices, so the wiring layout is dramatically simplified compared to the conventional case where the abnormality sensor and the monitoring device are connected in many-to-many, and the layout space Can be reduced efficiently and the construction work can be facilitated.

According to the fourth aspect of the present invention, the image picked up by the monitoring camera connected to one monitoring device can be easily formed based on the abnormality signal from the abnormality sensor directly connected to another monitoring device. This has the effect of being able to record on the video recording unit.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a monitoring system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of a monitoring device of the monitoring system according to one embodiment of the present invention.

FIG. 3 is a block diagram showing a conventional monitoring system.

[Explanation of symbols]

 10a to 10d bases 11a to 11e monitoring device 12 monitoring center 13 router 14a to 14e monitoring camera 15aa to 15el abnormality sensor 16 wide area information network (WAN) 20 data transmission / reception unit 21 calling unit 22 reply unit 23 failure judgment unit 24 alarm reception unit 24a to 24l Alarm input port 25 Camera control unit 26 Video recording unit 27 Storage unit 27a Alarm imaging correspondence table 27b Priority number data 28 Abnormality related judgment unit 29 Notification unit for monitoring center

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (reference) H04Q 9/00 311 H04Q 9/00 311J F term (reference) 5C054 AA02 AA05 CA04 CC03 CH02 DA06 EA01 EA03 HA02 5C087 AA02 AA09 AA10 AA24 BB12 BB65 BB75 CC02 CC23 EE07 EE12 EE13 EE14 FF01 FF02 FF30 GG07 GG10 GG11 GG12 GG36 5K048 AA06 BA34 CA05 DA03 EB08 EB15 FB08 GA02 GA12 GB05 HA01 HA02 5K101 KK12 MM07 NN06 NN18NN

Claims (4)

[Claims] A plurality of monitoring targets are monitored by a plurality of monitoring devices, and when each monitoring device detects some abnormal situation, a notification is sent to a monitoring center that is separated from these monitoring devices. A monitoring system, wherein: the plurality of monitoring devices; an intercommunicator that connects the plurality of monitoring devices so as to be able to communicate with each other; and the monitoring center that is connected to the intercommunicator through a predetermined communication network. Wherein each of the monitoring devices determines a priority order among the plurality of monitoring devices in advance and transmits predetermined information related to monitoring by each of the monitoring devices to another monitoring device through the intercommunicator. Only a single monitoring device having a relatively high priority represents the monitoring information on behalf of all other monitoring devices through the intercommunicator and the communication network. Monitoring system characterized in that it is adapted to notify the over. 2. The monitoring system according to claim 1, wherein each of the monitoring devices has a failure determination unit that mutually detects a failure with another monitoring device. As the single monitoring device that reports predetermined information related to the monitoring to the monitoring center through the intercommunicator and the communication network on behalf of the monitoring device, the failure determination unit determines that a failure has occurred. A single monitoring device having the highest priority among the remaining monitoring devices excluding the monitoring device that has been excluded. 3. The monitoring system according to claim 1, wherein the predetermined information related to the monitoring is provided with an abnormal signal from a plurality of abnormal sensors for detecting a predetermined abnormal state. Each of the abnormality sensors is connected to only one of the monitoring devices, and when the abnormality signal is given from each of the abnormality sensors, at least the abnormality signal is transmitted. A surveillance system characterized in that the given information is transmitted to all other surveillance devices. 4. The surveillance system according to claim 3, wherein at least one surveillance camera is connected to the surveillance device, and the surveillance device records an image captured by the surveillance camera. Unit is installed, and when the abnormality signal is given from each of the abnormality sensors, the monitoring device monitors that the abnormality signal has been given and specifies the monitoring device to which the abnormality signal has been given. The device identification code and the abnormal sensor identification code for specifying the abnormal sensor to which the abnormal signal has been given are transmitted to all other monitoring devices, and further, the abnormal signal is given from another monitoring device. When the monitoring device identification code and the abnormal sensor identification code are given, the data is compared with a correspondence table stored in a predetermined storage unit in advance, and the corresponding data is stored in the correspondence table. Monitoring system the image captured by the monitoring camera when there is characterized in that it is adapted to record on the video recording unit.