JP2000295598A - Remote monitor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a remote monitor system where malfunctions take place less and highly accurate supervision can be attained. SOLUTION: The remote monitor system is provided with an image pickup device such as a video camera to acquire image information of a monitor area 200 such as a vault and a monitor center 300 remotely monitors the area 200 in response to occurrence of a change in the picked-up image information. A monitor target 202 is set in the area 200 on the basis of the image information picked-up by the video camera or the like, and the system is provided with an object discrimination unit that acquires a relative change of an object with respect to the target on the occurrence of the object within the area and discriminates whether or not to call attention in the monitor center depending on the amount of change.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring system, and more particularly to an image capturing apparatus for acquiring image information of a monitoring area, and remotely monitoring the monitoring area at a monitoring center in response to a change in the image information. Related to a remote monitoring system.

[0002]

2. Description of the Related Art Conventionally, an image capturing device such as a camera is installed in a monitoring area, and remote monitoring configured to transmit image information obtained by the camera to a monitoring center located at a remote location using a communication line. Systems are known. In such a remote monitoring system, the operator monitors the image displayed on the monitor of the monitoring center, and when an abnormality is found, reports to the police or other related organizations or dispatches a guard to the monitoring area. Taking action.

Further, in addition to a camera, various sensors such as a microphone and a thermal sensor are arranged at a monitoring place, and a signal from these sensors detects an intrusion of a suspicious person and transmits an abnormality detection signal to a monitoring center. There is also known a system for calling attention to an operator.

[0004]

However, in the above-mentioned conventional remote monitoring system, an abnormality cannot be found unless the operator constantly monitors the monitor. Required that multiple operators take turns monitoring. In addition, since the detection of an abnormality is performed by a human operator, there is no unavoidable risk of oversight, misjudgment, and the like. Furthermore, since one operator can usually monitor only one monitor, to monitor a plurality of monitoring locations, operators must be arranged according to the number of monitoring locations.

A method of recording image information on a video tape or the like has also been proposed in order to confirm the history of the monitoring place afterwards. However, the recorded video is checked by rewinding the video tape each time. It was a very complicated operation that had to be reproduced and finally checked by the operator with the naked eye.

[0006] In addition, in the system linked with various sensors such as a microphone and a thermal sensor, the system becomes complicated, malfunctions are easily generated such as an unnecessary warning, and the burden on the operator is increased. was there.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of a conventional remote monitoring system, and has been developed in the event that there is no need for any malfunction based on image information obtained by an imaging device installed in a monitoring area. It is an object of the present invention to provide a new and improved remote monitoring system that alerts the monitoring center only, reduces the burden on the operator, improves monitoring accuracy, and is excellent in security.

[0008]

According to the present invention, there is provided an image pickup apparatus such as a video camera for acquiring image information of a monitoring area such as a vault, and the like. A remote monitoring system is provided for remotely monitoring a monitoring area in a monitoring center according to a change.
According to the first aspect of the present invention, a monitoring target is set in a monitoring area based on image information captured by a video camera or the like, and when an object occurs in the monitoring area, the monitoring of the object is performed. It is characterized by including an object determination device that obtains a relative change amount with respect to the target and determines whether or not to alert the monitoring center according to these change amounts.

The relative amount of change of the object with respect to the monitoring target, which is a material for determining the alert, is based on the relative relationship between the object moving in the monitoring area and the monitoring target stationary in the monitoring area. For example, it is a change amount that can determine whether the object has approached the threat of the monitoring target or the dangerous level in question. For example, as described in claim 2,
The amount of change of the size of the object can be used, the amount of movement of the object can be set as described in claim 3, and the amount of movement of the object can be set as described in claim 4. The amount of change in the direction may be used, or the amount of change in luminance of the object may be used.

[0010] According to this configuration, the object generated in the monitoring area is not determined in the monitoring area based on the fluctuation of the image information. It is possible to configure the object determination device so as to be alerted only when the amount of change of the object exceeds a predetermined threshold value, for example, by capturing in the relationship of the monitoring target set in , It is possible to automatically monitor the monitoring area, and it is possible to construct a system with high monitoring accuracy that can alert the operator of the monitoring center only when it is really necessary. . For example, according to the present invention, it is determined that the movement of a small animal such as a mouse does not pose a threat to a monitoring target, so that a malfunction that an unnecessary warning is sent to the monitoring center is reduced, and the burden on the operator is reduced. It is reduced.

According to a sixth aspect of the present invention, a monitor capable of displaying a monitoring area is installed in the monitoring center, and the problem monitoring area is displayed in response to a warning from the object determination device. This eliminates the need to install a number of monitors corresponding to the monitoring areas even when monitoring a plurality of monitoring areas simultaneously, thus simplifying the system configuration and reducing the burden on the operator. Thus, the monitoring accuracy can be improved.

According to a seventh aspect of the present invention, an image storage device is installed in the monitoring center, and the image information relating to the problem monitoring area is recorded in response to the alert from the object determination device. For example, even when the problem monitoring area is examined and analyzed after the fact, it is possible to easily find the problem part without examining all the image information as in the related art.

Further, a dialog system with a monitoring center operator is installed in the monitoring area, and the dialog system is activated in response to an alert from the object determination device. In this case, the remote monitoring system is not limited to a mere security system that prevents the entry of suspicious persons, but also requires an unattended entry management system or parking system that requires a dialogue between the client located in the monitoring area and the operator of the monitoring center. It can be applied to other applications.

Furthermore, a sensor for detecting an object, for example, a security sensor such as a sound-collecting microphone or a thermal sensor is installed in the monitoring area, and the object judging device pays attention to a signal sensed by the sensor. If it is configured to be considered at the time of arousing, it is possible to further reduce malfunctions and improve monitoring accuracy.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a remote monitoring system according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a schematic configuration of a remote monitoring system according to an embodiment of the present invention, and FIG. 2 shows a schematic configuration of a monitoring area side system of the remote monitoring system. 3 and 4 are flowcharts showing the outline of the operation of the remote monitoring system according to one embodiment of the present invention. Further, in the following description and the accompanying drawings, members having substantially the same functional configuration are denoted by the same reference numerals, and redundant description will be omitted.

As shown in FIG. 1, a remote monitoring system according to the present embodiment includes a public network 100 such as ISDN.
Through a plurality of monitoring areas # 1 to #n (200-1 to
00-n), the monitoring center 300, and a related area 400 such as a security station, a police station or a fire department are interconnected and constructed as a wide area network system. In the illustrated example, the public line network 100 is used as an interconnecting network. However, the present invention is not limited to such an example, and may be applied to a wired network such as a cable television network or a wireless network interconnected by wireless terminals. Needless to say, it can also be applied to. Further, in the illustrated example, the remote monitoring system is constructed as a wide area network system. However, the present invention is not limited to such an example, and may be constructed as a medium area network system or a system using an in-house intra network system. It goes without saying that it is possible.

Next, referring to FIG.
The configuration of 0-1 will be described. As the monitoring area, for example, important facilities such as a vault or a document storage room in a public institution, a school institution, a research institution, a CD (Cash Dispense).
er) and ATM (Automated Teller)
Financial facilities, such as a corner for setting up a Machine, an exhibition facility, such as a museum or a museum, a welfare facility, such as a nursing home, and a store facility, such as a convenience store or a supermarket. Of course, the present invention is not limited to such a facility, but can be used for any area where remote monitoring by an operator on the monitoring center side is possible, such as an intrusion of a suspicious person, the occurrence of a fire or water leak, or an unmanned facility that requires customer response in the event of an abnormality. It goes without saying that it can be applied to a remote monitoring system.

In the example shown in FIG.
-1, a safe 202 is installed as a monitoring target. In the present specification, the monitoring target refers to an object set as a monitoring target in the monitoring area, and in the illustrated example, the safe 202 in which access by a suspicious person is prohibited corresponds to the monitoring target. I do. The monitoring target can be set variously according to the type of the monitoring area. For example, in the case of the above-mentioned monitoring facility, if the document storage room is a monitoring area, it is possible to set an important document storage shelf as a monitoring target. Can be set as a monitoring target. If the exhibition facility is a monitoring area, it is possible to set an exhibition such as a painting as a monitoring target. It is possible to set a place that is hard to see as a monitoring target, and if the store facility is a monitoring area, it is possible to set a warehouse entrance or a cash register as a monitoring target. Further, the monitoring target may be set as the entire image of the monitoring area without specifying the monitoring target as a predetermined object. For example, when the imaging device is directly installed in a safe, the approach of the object to the imaging device itself becomes a problem. In such a case, the monitoring target is set as the entire monitoring area and the imaging of the object is performed. It can be configured so that access to the device or the like is a problem.

Referring again to FIG.
To explain the system configuration installed in -1,
In the monitoring area 200-1, an ITV (industrial television) camera 204 capable of capturing an image around the monitoring target 202, a sound collecting microphone 206 picking up sound around the monitoring target 202, and sensing environmental changes around the monitoring target 202 Security sensor 208, such as a thermal sensor, and an illumination light 21 capable of illuminating the surroundings of the monitoring target 202
0, a calling speaker 212 and the like are provided.
Further, an abnormality detection sensor (security sensor) 214 is also provided on the monitoring target 202 itself. These input / output devices 204 to 214 are connected to a control device 216 that processes various signals and generates corresponding output signals. The control device 216 is a so-called microcomputer and includes an arithmetic device and a storage device, and is connected to the public network 10 via the communication control device 218-1.
Connected to 0.

In the example of the system configuration shown in FIG.
In addition to the V camera 204, various input devices (various sensors, etc.) and various output devices (various speakers, illumination lights, etc.)
In the monitoring area 200-1, an imaging device (image input device) capable of acquiring at least image information around the monitoring target 202 may be installed.
In addition to the V camera 204, various analog and digital image input devices can be employed. Further, an input device and an output device that can be used in combination as the above-described imaging device can be arbitrarily selected according to the type, importance, and cost of the monitoring area. For example, sensors as input devices installed in the monitoring area 200-1 are not limited to the above examples, and various sensors capable of detecting an abnormality in the monitoring area, such as a smoke sensor and a water leak sensor, may be installed. it can. Also, the output device installed in the monitoring area 200-1 is not limited to the illumination lamp 210 and the speaker 212, and various output devices such as a water sprinkler and various threat devices can be installed.

Returning to FIG. 1, the configuration of the monitoring center 300 will be described. The monitoring center 300 receives the alert signal from each of the monitoring areas 200-1 to 200-n via the public line 100, and conversely, receives the alert signal from each of the monitoring areas 200-1 to 200-n.
A communication control device 302 capable of transmitting commands corresponding to 1 to 200-n via the public line 100, processes signals transmitted through the communication control device 302, and generates necessary commands. A control device 304, a storage device 306 that stores various monitoring programs and can store image information transmitted from each of the monitoring areas 200-1 to 200-n when necessary, A monitoring monitor 308 is installed to display the status of 200-1 to 200-n and allow the operator to visually confirm the status.

It is preferable that the monitoring monitor 308 can display a multi-screen. In the example shown,
Four sub screens 308-1 to 308-4 are displayed at the bottom of the screen, and one main screen 308-5 is displayed at the center of the screen. For example, the sub screen 308
Each of the monitoring areas is displayed in the order of -1 to 308-4 while being sequentially switched, and the menu screen of the monitoring program is displayed on the main screen 308-5. Then, as described later, when the alert signal is received, a screen of the monitoring area in question is displayed on the main screen 308-5.

As described above, in the illustrated example, the monitoring monitor 30
8 adopted a single monitor with a multi-screen configuration.
Of course, the present invention is not limited to such an example. For example, a plurality of monitors are installed in a monitoring center, a screen of a monitoring area corresponding to each monitor is configured to be displayed, and a warning lamp or the like is illuminated for a monitor requiring attention. It goes without saying that it is also possible.

Next, the operation of the remote monitoring system according to the present embodiment will be described with reference to FIGS.

First, the monitoring operation on the monitoring area side will be described with reference to FIG. After a predetermined input / output device is installed in the monitoring area 200-1, initialization is performed. In this initial setting, first, image information of the monitoring area is acquired (S
102), the entire monitoring area is stored as image information. Next, the monitoring target 202 is specified from the monitoring area and stored (S104). Thus, the initial setting of the monitoring area 200-1 is completed, and then the actual monitoring action is executed (S106).

During the monitoring operation, the monitoring area 200-1
When an object is generated inside, the initially set background image changes (S108). Note that the object referred to in this specification is a generic term for an object that can be imaged by the ITV camera 204 or the like. In particular, an object that occurs in the monitoring area as a moving object with respect to an initially set immovable background screen. Shall be referred to. More specifically, the objects include users who can use the monitoring target 202 properly,
A suspicious person trying to gain unauthorized access to the monitoring target 202, a small animal such as a rat or cockroach moving in the monitoring area 200, a moving object such as a leaf or garbage rolled up by wind or the like is grasped as a moving object with respect to the background screen. All objects are included.

Regarding the discovery of these objects,
It is possible to apply various known image processing techniques, but the object discovery itself is not directly related to the present invention, and thus details thereof will not be described. However, in the case of the present embodiment, in addition to the ITV camera 204, the sound collecting microphone 206 and the security sensor 208
It is configured so that the occurrence of an object can be detected more accurately by referring to environmental changes such as sound and heat in the monitoring area in addition to finding the object by image processing. ing.

After the object is found in the monitoring area, the relationship between the found object and the monitoring target is monitored. For example, when the object attempts to approach the monitoring target, the imaging device recognizes the change in the size of the object, the change in the moving amount, and the change in the moving direction. If the object uses a light such as a flashlight, the movement of the object is perceived by the imaging device as a change in luminance. Then, the control device 216 determines whether to report the existence of this object to the monitoring center in a remote place, in consideration of the amount of change between these objects and the monitoring target (S112).

For example, even if it is assumed that the size of an object is large and the object is approaching the monitoring target, if the size is smaller than a certain size, the object is considered to be a small animal such as a mouse. Judgment is made, and the alert to the monitoring center is postponed. Regarding the change of the movement amount and the movement direction, if the change of behavior is impossible for humans, for example, in the case of zigzag movement, the object existing in the monitoring area is determined to be a small animal or a leaf of a tree. The evocation is forgotten. In addition, even if the change in luminance is temporary, it is determined that the light of a vehicle passing outside the monitoring area is illuminated, and a warning is not sent to the monitoring center. Is continued.

However, when it is determined in step S112 that the relative change amount between the object and the monitoring target has reached the alert level, for example, it is determined that the object has approached the monitoring target to a threat. In this case, attention is alerted to a remote monitoring center via the public network 100 (S
114).

Next, the monitoring operation in the monitoring center will be described with reference to FIG. In the monitoring center, remote monitoring is performed (S102), but when a plurality of monitoring areas exist, it is impossible for a limited number of operators to simultaneously monitor all monitoring areas. However, according to the present embodiment, if an abnormality is found in a certain monitoring area according to the flow shown in FIG. 3, a warning signal is sent to the monitoring center (S20).
4) Since the problem monitoring area can be specified according to the caution monitoring signal, a plurality of monitoring areas can be monitored simultaneously by a limited number of operators.

In the monitoring center, according to the alert signal,
For example, the monitoring area in question is displayed on the main screen of the monitoring monitor. As a result, the operator can check the status of the monitoring area on the screen of the monitoring monitor (S206). At the same time, recording of a change in the status of the monitoring area in the storage device is started. An image storage device uses an analog storage device such as a video recorder if the signal sent from the monitoring area is an analog video signal, and a hard disk if the signal sent from the monitoring area is a digital signal. A digital storage device such as is used.

The operator checks the screen of the monitor monitor with the naked eye, determines whether or not any response is necessary for the object (S208), and takes necessary countermeasures (S210). For example, if it is confirmed that a suspicious person is approaching the surveillance target, a notification is sent to a security station or police station near the surveillance area, and if necessary,
It turns on the lights, locks the electric lock and controls other facilities, and calls out to the suspicious individual with a speaker. On the other hand, if no abnormalities are found even after checking the situation, or if the person approaching the monitoring target has authorized access rights, the alert is released and normal remote monitoring is performed. Return to action.

As described above, according to the remote monitoring system according to the present embodiment, the occurrence of an abnormality in the monitoring area can be grasped based on the relative relationship between the monitoring targets, so that the conventional system is not changed greatly. , It is possible to build a remote monitoring system that can accurately confirm the occurrence of abnormalities in the monitoring area, and it is possible to reduce the burden on the operator and improve the monitoring accuracy It is.

While the remote monitoring system according to the preferred embodiment of the present invention has been described with reference to the accompanying drawings, the present invention is not limited to such an example. It is clear that a person skilled in the art can conceive various changes and modifications within the scope of the technical idea described in the claims. It is understood that it belongs to.

For example, in the examples shown in FIGS.
Although an example has been described in which the present invention is applied to a remote monitoring system mainly for finding a suspicious person approaching a monitoring target in a monitoring area, the present invention is not limited to such an example. For example, the present invention can be applied to an entry management system as shown in FIG.

As shown in FIG. 5, the entry control system 500 includes a door 504 as a monitoring target provided with an electric lock 502. Further, an imaging device 506, a sound collecting microphone 508, a speaker 510, a monitor 512, an unlocking system 514, and the like are provided adjacent to the door 504. These input / output devices are connected to the control device 516, and further connected to the monitoring center 300 via the communication control device 518 and the public line 100.

The imaging device 506 constitutes an image acquisition device relating to the monitoring area according to the present invention, and, if necessary, a sound collecting microphone 508, a speaker 510, and a monitor 51.
2 together with a system for interacting with the room entrant. Further, in the present system, the monitoring target is not particularly set, and the screen of the entire monitoring area imaged by the imaging device 506 is set as the monitoring target.

Next, the operation of the room entry management system will be described. First, when an object is generated in the monitoring area, the relationship between the object and the monitoring target is monitored based on the image information captured by the imaging device 506, and it is determined whether the object is approaching the imaging device 506, that is, the door 504. You. Then, when it is determined that the object is approaching the door 504, an alert signal is sent to the monitoring center 300, and recording of an image of the object is started. Further, a dialog system with the monitoring center is activated as needed.

The monitoring center can determine whether or not the face of the registrant who operates the unlocking system 514 matches the face information of the registrant registered in association with the identification code. If the entered person is not a registrant associated with the identification code, the entry is refused. On the other hand, if the guest is a regular registrant, the room is permitted. In addition, if necessary, the occupant and the monitoring center may interact with each other using a dialog system to increase the monitoring accuracy of permission to enter the room. Also, the comparison between the entrant and the registered person is
The operation may be performed by the operator with the naked eye or automatically by a known image processing technique.

As described above, according to the present system, it is possible to construct an unmanned entry management system which is more excellent in safety than the conventional system. In addition, in the conventional room entry management system simply using an ID card or the like, it was difficult to identify an operator, and it was difficult to prevent a crime by an insider or a security guard beforehand. According to
Since the person approaching the door can be automatically recorded, it is possible to easily and reliably identify the operator, and it is possible to construct a more secure entry control system.

Further, the present invention can be applied to an unmanned parking lot management system 600 as shown in FIG. The unmanned parking lot management system 600 includes a gate bar 602 and a management box 604. The management box 604 includes an interactive system including an imaging device 606 according to the present invention, another imaging device 608, a speaker 610, a microphone 612, a monitor 614, and a document camera 616. Further, the management box 604 is connected to the control device 618, and further connected to the monitoring center 300 via the communication control device 620 and the public line 100.

In this embodiment, a space at a predetermined distance from the gate bar 602 is set as a monitoring target. Then, when the object 650 occurs in the monitoring area, the relationship between this object and the monitoring target is monitored. For example, if this object is car 6
If it is 50, the car 650 enters the parking lot,
Alternatively, it is determined whether the vehicle is approaching the gate bar 602 to get out of the parking lot, or is simply a vehicle moving near the management box 604. When the car 650 approaches the management box 604 or the gate bar 602, an image of the approaching car is captured,
The monitoring center 300 is alerted, and information about the vehicle, such as the vehicle type and license plate, is stored in the storage device. At the same time, the interactive system is activated.

Here, when the parking lot is a general parking lot, a car 605 approaching the management box 604 is
A normal parking ticket issuance operation and a settlement operation are performed, and the gate bar 602 is operated as needed. However, if the gate bar 602 does not operate, the issue or receipt of a parking ticket is refused, or a trouble such as jamming of banknotes occurs, a dialogue system is activated, and the driver communicates with the monitoring center 300 smoothly. It becomes possible to compete,
It is possible to prevent trouble by dispatching a staff member if necessary.

On the other hand, when the parking lot is a monitoring parking lot where a high degree of security is required, according to the present system, the vehicle approaching the gate bar 602 as in the entry management system described above. Information is automatically stored in the monitoring center 300, and it is possible to determine whether the vehicle is a vehicle permitted to access the parking lot. Further, in the case of the present system, the document camera 616 is provided, so that the driver can use the document camera 6 as necessary.
By imaging the driver's license or the parking lot commuter pass with 16 and sending it to the monitoring center 300, the monitoring center 300 side can perform gate control according to the information.

As described above, by applying the present remote monitoring system to a management system for an unmanned parking lot, it is possible to easily control the entry and exit of cars to and from a parking lot at a remote location. Also, even in a parking lot where a high degree of security is required, unmanned operation is possible. Further, by photographing a license or the like with the document camera 616, application to a post-payment system for a parking fee or the like is also possible. In the present embodiment, 606, 608, 6
Although 16 cameras are provided, it is needless to say that these cameras can be integrated into one camera. In particular, a document camera that captures a license etc. can also be used as an image capturing device of an interactive system. Can simplify the system.

[0047]

As described above, according to the present invention,
Instead of simply determining whether or not an alert has occurred in the monitoring area based on the fluctuations in the image information, the object that has occurred in the monitoring area is determined based on the relationship between the monitoring target set in the monitoring area. Since the object determination device can be configured to give a warning only when the amount of change of the captured object exceeds a predetermined threshold value, for example, the monitoring area can be automatically monitored in a remote place. It is possible to construct a security system with high monitoring accuracy that can alert the operator of the monitoring center only when it is really necessary.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a remote management system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a schematic system configuration on a management area side of the remote management system according to the embodiment of the present invention;

FIG. 3 is a flowchart schematically showing a work flow on a management area side of the remote management system shown in FIGS. 1 and 2;

FIG. 4 is a flowchart schematically showing a work flow on the management center side of the remote management system shown in FIGS. 1 and 2;

FIG. 5 is a system configuration diagram showing a schematic configuration of another embodiment in which the remote management system according to the present invention is applied to an entry / exit management system.

FIG. 6 is a system configuration diagram showing a schematic configuration of another embodiment in which the remote management system according to the present invention is applied to a parking lot entrance / exit management system.

[Explanation of symbols]

 Reference Signs List 100 public network 200-1 to 200-n monitoring area 202 monitoring target 204 ITV camera 206 microphone 208 security sensor 210 illumination lamp 212 speaker 214 security sensor 216 controller 218-1 to 218-n communication controller 300 monitoring center 302 communication Control device 304 Control device 306 Storage device 308 Monitor 308-1 to 308-4 Sub screen 308-5 Main screen 400 Related organizations

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasuhiro Mizobuchi 3-2-11 Nishi Shinjuku, Shinjuku-ku, Tokyo Shinjuku Mitsui Bldg. No.2 F-term (reference) 5C054 CH08 DA01 EA03 FC01 FC05 FC12 FC13 FC15 FE09 FE28 FF06 GB01 HA18 5C084 AA02 AA03 AA07 AA09 BB01 BB04 BB31 DD11 GG17 GG54 GG78 HH12

Claims (9)

[Claims] A remote monitoring system for remotely monitoring the monitoring area in a monitoring center in response to a change in the image information, wherein the remote monitoring system includes an imaging device for acquiring image information of the monitoring area. A monitoring target is set in a monitoring area, and when an object occurs in the monitoring area, a relative change amount of the object with respect to the monitoring target is obtained, and a monitoring center is alerted according to the change amount. A remote monitoring system comprising an object determination device that determines whether or not the remote monitoring is performed. 2. The remote monitoring system according to claim 1, wherein the change amount is a change amount of the size of the object. 3. The remote monitoring system according to claim 1, wherein the change amount is a movement amount of the object. 4. The remote monitoring system according to claim 1, wherein the change amount is a change amount in a moving direction of the object. 5. The remote monitoring system according to claim 1, wherein the change amount is a luminance change amount of the object. 6. The monitoring center is provided with a monitor capable of displaying a monitoring area, and in response to the alert,
2. A problem monitoring area is displayed.
The remote monitoring system according to any one of 2, 3, 4, and 5. 7. The monitoring center is provided with an image storage device, and records image information relating to a problem monitoring area in response to the alert. 7. The remote monitoring system according to any one of 4, 5, and 6. 8. The system according to claim 1, wherein a dialog system with an operator of the monitoring center is installed in the monitoring area, and the dialog system is activated in response to the alert. , 2, 3, 4, 5, 6, or 7. 9. The sensor according to claim 1, wherein a sensor for detecting an object is provided in the monitoring area, and the object determination device considers a signal detected by the sensor when calling attention. , 3, 4, 5, 6, 7 or 8.