JP3765802B2 - Remote monitoring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a remote monitoring apparatus that transmits a monitoring image including video and audio to a telephone terminal having a videophone function connected via a communication network.
[0002]
[Prior art]
Conventionally, as this type of device, for example, a device in which a system data input device is connected to an automatic notification terminal device and normal states of various sensors are registered in advance in a storage unit (hereinafter referred to as a first device) can be cited ( For example, see Patent Document 1). In the first device, when a system data input device is removed from the automatic notification terminal device and an abnormality is detected based on the sensor state, a notification is sent to the monitoring center. .
[0003]
In addition, as a device for obtaining a monitoring image from a location distant from the camera monitoring system using a TV phone terminal, a still image transmission device (hereinafter referred to as a second image transmission device) that transmits a still image to a predetermined TV phone terminal based on the detection content of the sensor (See, for example, Patent Document 2).
[0004]
[Patent Document 1]
Japanese Utility Model No.4-131083
[0005]
[Patent Document 2]
JP-A-4-288699
[0006]
[Problems to be solved by the invention]
However, the conventional example having such a configuration has the following problems.
That is, the conventional first device has a problem that it is necessary to connect a system data input device to register the normal state of various sensors in the storage unit, and the work is complicated. In addition, it is necessary to be aware of the circuit configuration of each connected sensor, for example, the type of normally open switch type or normally closed switch type, and at the time of registration, at least electrical knowledge is required to facilitate registration work. Can not do.
[0007]
In addition, once an abnormality was detected and a report was made, even if the line was shut down after confirming that, the abnormality was detected if the various sensors were not restored to the normal state at the site where the device was installed. Because it is in a state, it receives a report based on the abnormality again. That is, there is a problem that prevention of malfunction of notification based on abnormality detection is not considered at all.
[0008]
Further, since the conventional second device only discloses a monitoring camera device using a TV phone terminal, it has the same problem as the first device described above.
[0009]
The present invention has been made in view of such circumstances, and can improve the operability when registering the initial state of the monitoring sensor and prevent malfunction of notification based on abnormality detection. An object of the present invention is to provide a remote monitoring device that can be used.
[0010]
[Means for Solving the Problems]
In order to achieve such an object, the present invention has the following configuration.
That is, the invention according to claim 1 is acquired by the monitoring image acquisition unit having an imaging function, the communication control unit that controls communication with the other party telephone terminal via the communication network, and the monitoring image acquisition unit. An image providing means for outputting an image as a monitoring image to the communication control unit, an input terminal to which the monitoring sensor is connected, and a storage unit in which a telephone number that can be called is registered, and based on a signal from the monitoring sensor In the remote monitoring device that provides the monitoring image to the destination telephone terminal corresponding to the telephone number registered in the storage unit via the communication network, the signal level of the monitoring sensor detected via the input terminal A sensor initial state storage unit that stores the initial state, and a setting button for setting a mode for permitting or prohibiting a call to a telephone number registered in the storage unit Immediately after the setting button is operated, state storage means for directly acquiring the signal level from the monitoring sensor and registering it in the sensor initial state storage unit, and when the setting button is operated, the calling mode Is set based on the change in the signal of the monitoring sensor, the signal level of the monitoring sensor and the signal level of the initial state stored in the sensor initial state storage unit, An abnormality determination unit that determines that an abnormality has occurred only when the results are different, and a partner corresponding to the telephone number that can be called to the communication control unit when the abnormality determination unit determines that an abnormality has occurred. Call control means for instructing a call to the destination telephone terminal.
[0011]
(Operation / Effect) When the setting button is operated after the monitoring sensor is attached to the input terminal and brought into a normal state, the signal level is registered in the sensor initial state storage unit by the state storage unit. When the signal of the monitoring sensor changes and the signal level is different from the signal level in the initial state registered in the sensor initial state storage unit, the abnormality determining means determines that an abnormality has occurred. In response to this, the call control means instructs the communication control unit to make a call to the other party telephone terminal corresponding to the telephone number that can be called, and notifies the occurrence of an abnormality. The communication control unit provides an image from the image providing unit to the destination telephone terminal as a monitoring image.
[0012]
Note that the telephone number that can be called here corresponds to a telephone terminal owned by the administrator of the device or the administrator of the monitoring object by the monitoring image acquisition means. Moreover, the monitoring image acquisition means here can acquire not only an image but a sound.
[0013]
As described above, since the initial state can be registered simply by attaching the monitoring sensor and operating the setting button, the circuit configuration and electrical knowledge relating to the output of the monitoring sensor are not required. Therefore, the operability when registering the initial state of the monitoring sensor can be improved. In addition, after detecting an abnormality, it can be said that the monitoring sensor is in an abnormal state unless it is manually returned to the initial state. Therefore, the abnormality determining means does not determine that an abnormality has occurred. Accordingly, it is possible to prevent malfunction of notification based on abnormality detection.
[0014]
According to a second aspect of the present invention, in the remote monitoring device according to the first aspect, the monitoring sensor is preferably an open / close detection switch for detecting an open state and a closed state of the open / close object.
[0015]
(Operation / Effect) It is possible to detect and report an abnormality by detecting an abnormality by an open / close detection switch that detects an open state and a closed state of an open / close object such as a door or a window.
[0016]
Further, it is preferable that the abnormality determination means further includes, as a determination condition, that a time different from the signal level in the initial state exceeds a minimum input time.
[0017]
(Operation / Effect) When the signal level of the monitoring sensor is different from the signal level in the initial state, the fact that the time exceeds the preset minimum input time should be taken into account when judging the occurrence of abnormality. Add to conditions. Thereby, even if a monitoring sensor raises chattering, the report based on an erroneous abnormality detection is not performed.
[0018]
The abnormality determination means preferably further includes, as a determination condition, that a minimum gap time exists between the signal levels different from the signal level in the initial state a plurality of times (claims). Item 4).
[0019]
(Operation / Effect) When the monitoring sensor signal level is different from the initial signal level multiple times, the signals separated by the minimum gap time are considered as independent signals. . For example, if a monitoring sensor is attached to an open / closed object such as a door, the door opens and closes due to fluttering and wind, or even if a non-malicious visitor attempts to open the door with a doorknob, Can be determined not to occur as an abnormality. Therefore, it is possible to prevent an operation that can normally occur without being abnormal for the monitoring target from being determined as abnormal.
[0020]
Further, the invention according to claim 5 is the remote monitoring device according to any one of claims 1 to 4, wherein the storage unit further stores a telephone number that can be received, and the call control means includes: When the call from the other party telephone terminal corresponding to the telephone number that can be received is accepted and the monitoring image is provided from the monitoring image acquisition means to the other party telephone terminal, the abnormality determining means generates an abnormality. Even if it is determined that the received telephone number of the other party telephone terminal matches the telephone number that can be called stored in the storage unit, the communication control unit It is characterized by instructing the maintenance of the communication.
[0021]
(Action / Effect) Even if an error occurs when receiving a call from the other party's telephone terminal corresponding to the telephone number that can be received and providing a monitoring image, the telephone number is called. If it matches a possible telephone number, even if an abnormality occurs, the communication is maintained without being interrupted. Therefore, it is possible to prevent wasteful communication control for the same destination telephone terminal.
[0022]
The telephone number that can be called here is different from the above-mentioned telephone number that can be called, and it simply refers to a telephone terminal that is owned by a person who shares the object to be monitored or a person concerned. However, since the same telephone number can be registered in the storage unit as being capable of receiving and calling, it can be registered from the other party telephone terminal corresponding to the telephone number that can be called before detecting an abnormality. If an abnormality is detected while the monitoring image is being received and the monitoring image is provided, monitoring by the administrator has already been performed. It is possible to prevent useless operations such as performing.
[0023]
According to a sixth aspect of the present invention, in the remote monitoring device according to any one of the first to fifth aspects, the abnormality determination unit is configured to perform an abnormality while calling or communication is being performed by the communication control unit. Even when it is determined that a call has occurred, the communication control unit is instructed to maintain the call or communication.
[0024]
(Operation / Effect) Even if the occurrence of an abnormality is detected while a call or communication is already being performed, wasteful communication control can be prevented by not blocking the call or communication.
[0025]
Further, the invention according to claim 7 is the remote monitoring device according to any one of claims 1 to 6, wherein the storage unit further stores a telephone number that can be received, and the call control means includes: When the call from the other party telephone terminal corresponding to the telephone number that can be received is accepted and the monitoring image is provided from the monitoring image acquisition means to the other party telephone terminal, the abnormality determining means generates an abnormality. The communication control unit forcibly cuts off the communication to the destination telephone terminal, and the destination telephone terminal corresponding to the telephone number that can be called to the communication control unit It is characterized by instructing a call to the machine.
[0026]
(Function / Effect) If it is determined that an abnormality has occurred while providing a monitoring image to the other party's phone terminal that corresponds to the phone number that can be received, the communication can be forcibly blocked and the call can be made Make a call to the other party's telephone terminal that corresponds to the correct telephone number. Therefore, it is possible to give top priority to reporting to the manager such as the monitoring target.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
1 to 3 relate to an embodiment of the present invention, FIG. 1 is a block diagram showing a schematic configuration of a remote monitoring apparatus according to the embodiment, and FIG. 2 is a schematic diagram showing the contents of a telephone number registering machine part. FIG. 3 is a diagram showing the correspondence between the monitoring sensor signal and the calling operation.
[0028]
The remote monitoring device 1 includes a monitoring camera 3 corresponding to the monitoring image acquisition means in the present invention, and provides a monitoring image according to a telephone terminal 7 that has made a call via a communication network such as a telephone line 5. Or, when an abnormality is detected, this is called to a specific telephone terminal 7 to provide a monitoring image. An example of the telephone terminal 7 here is a mobile phone having a videophone function.
[0029]
Note that the monitoring camera 3 can acquire not only images but also sounds, and in the present invention, these are also referred to as images (information).
[0030]
The communication control unit 9 controls communication with the telephone terminal 7 via the telephone line 5. The image providing unit 11 outputs an image acquired by the monitoring camera 3 to the communication control unit 9 as a monitoring image under the control of the control unit (27) described later. The communication control unit 9 performs control for providing a monitoring image to the telephone terminal 7 via the telephone line 5 with respect to the telephone terminal 7 corresponding to the destination telephone number capable of receiving or calling. Further, the communication control unit 9 receives the destination telephone number of the telephone terminal 7 that has made the call, and performs control for providing that number to the call control means (33) described later.
[0031]
The remote monitoring device 1 includes an input terminal 15 for capturing a signal from the monitoring sensor 13. The input terminal 15 is connected to a control unit (27), which will be described later, and performs a predetermined operation based on a signal from the monitoring sensor 13. As the monitoring sensor 13, for example, an open / close detection switch for detecting opening / closing of a door or window of a house can be cited.
[0032]
The storage unit 17 includes a telephone number registration storage unit 19, a sensor initial state storage unit 21, and a call mode state storage unit 23.
[0033]
The telephone number registration storage unit 19 registers a destination telephone number that can receive a call and a destination telephone number that can receive and make a call. For example, the destination telephone numbers are registered as shown in FIG. That is, a destination telephone number and a flag corresponding to each. This flag is “0” or “1”. For example, “0” indicates that an incoming call is possible, and “1” indicates that an incoming / outgoing call is possible. Normally, only the other party telephone number corresponding to the telephone terminal such as the administrator of the remote monitoring apparatus 1 is set as the other party telephone number that can receive and call.
[0034]
The sensor initial state storage unit 21 stores the signal level of the monitoring sensor 13 detected via the input terminal 15 as an initial state. The initial state referred to here usually means a signal of the monitoring sensor 13 when the monitoring target is in a normal state. For example, when the monitoring sensor 13 is attached to a door of a house and an illegal intrusion is monitored, a signal of the monitoring sensor 13 in a state where the door is closed is set as an initial state as described later.
[0035]
The calling mode state storage unit 23 stores the setting of the calling mode. Specifically, it is stored as a call mode flag whether the call to the other party telephone number that can receive / call is permitted (call mode) or prohibited (non-call mode). Yes.
[0036]
The control unit 27 comprehensively controls each component of the remote monitoring device 1.
Specifically, a state storage unit 29, an abnormality notification unit 31, a call control unit 33, and a call mode setting unit 35 are provided.
[0037]
In response to the operation of the setting button 25, the state storage unit 29 directly acquires the signal level from the monitoring sensor 13 and registers the signal level in the sensor initial state storage unit 21.
[0038]
The abnormality notifying means 31 is set to a notification state when set to the calling mode as described later, and is set to a non-notifying state when set to the non-calling mode. When the notification state is set, the monitoring sensor 13 constantly monitors the signal to determine whether the signal has changed. When it is determined that there is a change, the current signal level of the monitoring sensor 13 is compared with the signal level in the initial state stored in the sensor initial state storage unit 21. As a result, if they are different, it is determined that an abnormality has occurred. When the non-notification state is set, the above monitoring and determination are not performed.
[0039]
The specific determination of the abnormality notification means 31 in the monitoring operation is performed as shown in FIG.
That is, when the signal of the monitoring sensor 13 changes, the current signal level is compared with the signal level in the initial state, and a call operation is performed according to the result. Specifically, when the signal level in the initial state of the monitoring sensor 13 is “H”, when the signal of the monitoring sensor 13 is changed from “L” to “H”, the current signal level is “H”. ”And the signal level“ H ”in the initial state is the same, so no call operation is performed. On the other hand, when the 13 signals of the monitoring sensor change from “H” to “L”, the current signal level is “L”, which is different from the signal level “H” in the initial state. . The same operation is performed when the signal level in the initial state is “L”.
[0040]
The abnormality notification unit 31 corresponds to the abnormality determination unit in the present invention.
[0041]
When the abnormality notification means 31 determines that an abnormality has occurred, the call control means 33 makes a call to the destination telephone terminal corresponding to the destination telephone number registered in the telephone number registration storage unit 19. To the communication control unit 9.
[0042]
The calling mode setting means 35 refers to the calling mode flag stored in the calling mode state storage unit 23 when the setting button 25 is operated. If the calling mode flag indicates the calling mode, the calling mode flag is reset to the non-calling mode and the abnormality notifying unit 31 is set to the non-notifying state. On the other hand, when the calling mode flag indicates the non-calling mode, the calling mode flag is set, the state storage unit 29 is activated, and the abnormality notification unit 31 is set to the notification state. That is, every time the setting button 25 is operated, the calling mode and the non-calling mode are alternately switched.
[0043]
The remote monitoring device 1 is provided with an indicator 37. The indicator 37 is driven by the drive unit 39 under the control of the calling mode setting means 35. For example, the indicator 37 may be a light emitting diode. In this case, the drive unit 39 is controlled to turn on the indicator 37 when the calling mode setting means 35 is set to the calling mode, and the indicator 37 is blinked when the calling mode setting means 35 is set to the non-calling mode. The drive unit 39 is controlled to alert the user.
[0044]
As the indicator 37, for example, a liquid crystal display device can be substituted. In this case, the drive unit 39 may be controlled to display the characters “calling” and “non-calling” on the indicator 37 and a symbol display (icon) reminiscent of it.
[0045]
Next, the monitoring operation of the remote monitoring device 1 will be described with reference to FIG. FIG. 4 is a flowchart showing an example of the monitoring operation.
[0046]
Here, it is assumed that registration of the destination telephone number that can be received and called has already been performed in the telephone number registration storage unit 19 by the registration process. In the registration process, a call is made to the remote monitoring device 1 from the telephone terminal 7 and a registration button (not shown) is operated while the device 1 is being called to register the remote monitoring device 1 as a destination telephone number that can be received. It is processing. In addition, after registering a destination telephone number that can be received once in this way, a call is made to the apparatus 1 again, and a registration button (not shown) is displayed when a call is in progress with the apparatus 1. ) To register as a destination telephone number that can be received and called. In this process, registration can be performed with a simple operation, and since no response is made to a call from a destination telephone number that is not stored in the telephone number registration storage unit 19, unnecessary billing is prevented. Can be done.
[0047]
Step S1
Processing branches depending on whether the calling mode is on.
That is, when the setting button 25 is operated and the calling mode is turned on, the process proceeds to step S6. Here, description will be made assuming that the calling mode is turned off.
[0048]
Steps S2 to S5
Before performing the monitoring operation, the signal level of the initial state of the monitoring sensor 13 is once registered as follows. That is, when the monitoring target is in a normal state, the user operates the setting button 25 (step S2). Then, the state storage unit 29 receives an instruction from the call mode setting unit 35, and registers the signal level of the monitoring sensor 13 taken in from the input terminal 15 in the sensor initial state storage unit 21 (step S4). Then, although the call mode is turned on (step S5), it is determined whether or not the call destination is registered before that (step S3). This is to prevent meaningless monitoring due to the absence of a report destination when an abnormality occurs.
[0049]
Since the initial state can be registered simply by attaching the monitoring sensor 13 and operating the setting button in this way, the circuit configuration and electrical knowledge relating to the output of the monitoring sensor 13 are unnecessary. Therefore, the operability when registering the initial state of the monitoring sensor 13 can be improved.
[0050]
Step S6
The processing branches depending on whether or not the setting button 25 has been operated to change the setting. Usually, the processing loop of the next step S7 and this step S6 is repeated.
[0051]
Step S7
The abnormality notification means 31 monitors the output signal of the monitoring sensor 13 and first determines whether or not the signal has changed. If it is determined that the signal has changed, the current signal level is compared with the signal level in the initial state stored in the sensor initial state storage unit 21. If it is determined that there is a difference as a result of the comparison, the process proceeds to step S8. This determination is as shown in FIG. 3 described above.
[0052]
Step S8
The call control means 33 refers to the telephone number registration storage unit 19 and performs a calling process for a destination telephone number that can be called. When the telephone terminal 7 corresponding to the destination telephone number arrives, the monitoring image from the monitoring camera 3 is provided via the image providing means 11 in response to the return of the incoming call echo. .
[0053]
Normally, for example, when a call processing is performed when it is determined that an abnormality has occurred when a door to be monitored is opened, the owner of the telephone terminal 7 corresponding to the other party's telephone number confirms the situation with a monitoring image. After disconnecting the line. And the process of step S9, S10 is repeated until the owner operates the setting button 25 of the remote monitoring apparatus 1, or closes a door so that the state of the monitoring sensor 13 may be in an initial state. This is because it is preferable not to return to the monitoring state in the place where the remote monitoring device 1 is installed unless an owner or the like of the remote monitoring device 1 takes confirmation or recovery measures.
[0054]
Further, after the abnormality is detected, it can be said that the monitoring sensor 13 is in an abnormal state unless the monitoring sensor 13 is artificially returned to the initial state. Therefore, the abnormality determination means 31 that makes the above determination does not determine that an abnormality has occurred. Therefore, repeated notification of occurrence of abnormality is not performed, and malfunction of notification based on abnormality detection can be prevented.
[0055]
When the setting button 25 is operated by the owner or the like, the process proceeds to step S11 to set the non-calling mode. Further, when the state of the monitoring sensor 13 is returned to normal by the owner or the like, the processes of steps S6 and S7 are repeated.
[0056]
If the calling mode is turned off and the non-calling mode is set, step S2 and the subsequent steps are executed, and a standby state is entered until the setting button 25 is operated.
[0057]
However, when the setting button 25 is operated to return to the calling mode (step S2), it is confirmed that the calling destination has been registered (step S3), and the process of acquiring the initial state of the monitoring sensor 13 is performed. Perform (step S4). Thereafter, the calling mode is turned on and the process returns to the loop of steps S6 to S7. That is, the monitoring state is entered.
[0058]
In addition, it is preferable to add the following conditions to the determination conditions by the abnormality notification means 31. Hereinafter, reference is made to FIGS. 5 and 6. 5 and 6 are time charts for explaining the determination of occurrence of abnormality in the monitoring sensor.
[0059]
(A) When the monitoring sensor 13 is repeatedly turned on and off as shown in FIG. 5, for example, it is turned on for T1 time from time t1 to t2, and then is turned off for T2 time from time t2 to t3. It is assumed that the power is turned on from time t3 to t4. The abnormality notifying means 31 considers whether or not the time T1 that is turned on, that is, the time different from the signal level in the initial state exceeds the minimum input time, as a determination condition. For example, when the minimum input time is TA1, the state of FIG. 5 is determined to be abnormal, but when the minimum input time is TA2, the state of FIG. 5 is not determined to be abnormal. The minimum input time may be determined in consideration of the monitoring object, the characteristics of the monitoring sensor 13, and the like. The minimum input time is, for example, 100 msec when the monitoring sensor 13 is an open / close detection switch.
[0060]
By adding this condition, even if the monitoring sensor 13 causes chattering, notification based on erroneous abnormality detection is not performed.
[0061]
(B) As shown in FIG. 5, when the monitoring sensor 13 is turned on a plurality of times, whether or not the on time exceeds the minimum gap time is added as a determination condition. For example, when the minimum gap time is TB1, it is determined that the second ON (time t3 to t4) is abnormal. On the other hand, when the minimum gap time is set to TB2, it is not determined that an abnormality has occurred twice. The minimum gap time may be determined in consideration of the characteristics of the monitoring object as in the case of the minimum input time. However, when the monitoring sensor 13 is an open / close detection switch, it is, for example, 300 sec.
[0062]
By adding this condition, for example, when a monitoring sensor is attached to an open / closed object such as a door, the door opens and closes with a flutter and wind, or a non-malicious visitor attempts to open the door with a door knob. It is possible to prevent each opening / closing from being judged as an abnormality even if it is attempted. Therefore, it can be determined that an operation that can normally occur without being abnormal for the monitoring target is not determined as abnormal.
[0063]
The minimum input time and the minimum gap time are registered in advance by a user or the like.
[0064]
(C) As shown in FIG. 6, when the monitoring sensor 13 is repeatedly turned on and off, for example, it is turned on from time t1 to t2, then turned off from time t2 to t3, and further turned on from time t3 to t4. And Of these, it is assumed that the first on-time exceeds the minimum input time, the abnormality notifying means 31 makes a report at time t1a, and has been in communication with the telephone terminal 7 for T3 time until time t2a. When the call is interrupted at time t2a and the next on occurs at time t3, the next on (time t3 to t4) is considered in consideration of time T4 from time t2a to time t3 when communication is interrupted. ) Decide whether to report. As this time T4, for example, a value longer than 0 sec is set. Therefore, when the notification related to the abnormality detection (time T3 including the time of calling) exceeds the time t3, that is, even if the monitoring sensor 13 is turned on again during the notification, the notification is already in progress. The notification process is not performed again until is shut off (corresponding to claim 6).
[0065]
By adding such a determination, wasteful communication control can be prevented by not interrupting the call or communication even if the occurrence of an abnormality is detected while the call or communication is already being performed.
[0066]
As described above, the telephone number registration storage unit 19 is registered with a destination telephone number that can be received and a destination telephone number that can be received and called. When a call is made from the telephone terminal 7 corresponding to the destination telephone number that can be received or the destination telephone number that can be received and called, the incoming call is accepted and a monitoring image is provided. If the monitoring sensor 13 is turned on during this time, it is preferable to respond as follows according to the flag of the other party's telephone number in communication at that time.
[0067]
(D) If the flag is a telephone number that can be received and called, the call control means 33 instructs the communication control unit 9 to maintain the communication (corresponding to claim 5).
[0068]
As a result, it is possible to prevent wasteful communication control for the same destination telephone terminal after receiving the abnormality detection.
[0069]
(E) If the flag is a phone number that can be received, the call control means 33 forcibly cuts off the communication and calls the destination phone terminal corresponding to the destination phone number that can make a call. Instructing the communication control unit 9 to make a call (corresponding to claim 7)
[0070]
As a result, it is possible to give top priority to reports to managers such as monitoring targets.
[0071]
The present invention is not limited to the above embodiment, and can be modified as follows.
[0072]
(1) As the telephone terminal 7, in addition to a mobile phone, for example, a digital video phone connected via an ISDN network, an IP phone connected via the Internet, or the like can be used.
[0073]
(2) In addition to the open / close detection switch, various sensors such as a non-contact optical sensor, a magnetic sensor, a photoelectric switch, a proximity switch, a pressure sensor, an infrared sensor, and a line sensor can be employed as the monitoring sensor 13.
[0074]
【The invention's effect】
As is apparent from the above description, according to the present invention, the initial state can be registered simply by attaching the monitoring sensor and operating the setting button, so that the circuit configuration and electrical knowledge relating to the output of the monitoring sensor can be obtained. It is unnecessary. Therefore, the operability when registering the initial state of the monitoring sensor can be improved. In addition, after detecting an abnormality, it can be said that the monitoring sensor is in an abnormal state unless it is manually returned to the initial state. Therefore, the abnormality determining means does not determine that an abnormality has occurred. Accordingly, it is possible to prevent malfunction of notification based on abnormality detection.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a schematic configuration of a remote monitoring apparatus according to an embodiment.
FIG. 2 is a schematic diagram showing the contents of a telephone number registration machine billion.
FIG. 3 is a diagram illustrating a correspondence between a monitor sensor signal and a calling operation;
FIG. 4 is a flowchart illustrating an example of a monitoring operation.
FIG. 5 is a time chart for explaining determination of occurrence of abnormality in the monitoring sensor.
FIG. 6 is a time chart for explaining determination of occurrence of abnormality in the monitoring sensor.
[Explanation of symbols]
1 ... Remote monitoring device
3 ... Surveillance camera (surveillance image acquisition means)
5 ... Telephone line
7 ... Telephone terminal
11. Image providing means
13… Monitoring sensor
17 ... Memory part
19… billions of phone number registration machines
21 ... Sensor initial state storage unit
23 ... Calling mode state storage unit
25 ... Setting button
27 ... Control unit
29 ... State storage means
31 ... Abnormality notification means (abnormality determination means)
33 ... Call control means
35 ... Calling mode setting means
37 ... Indicator
39 ... Drive unit

Claims (7)

A monitoring image acquisition unit having an imaging function, a communication control unit that controls communication with a destination telephone terminal via a communication network, and an image acquired by the monitoring image acquisition unit is output to the communication control unit as a monitoring image Image providing means, an input terminal to which a monitoring sensor is connected, and a storage unit in which a telephone number that can be called is registered, and is registered in the storage unit via a communication network based on a signal from the monitoring sensor In the remote monitoring device that provides the monitoring image to the destination telephone terminal corresponding to the telephone number being
A sensor initial state storage unit that stores a signal level of the monitoring sensor detected through the input terminal as an initial state;
A setting button for setting a mode for permitting or prohibiting a call to a telephone number registered in the storage unit;
State storage means for directly acquiring the signal level from the monitoring sensor and registering it in the sensor initial state storage unit immediately after the setting button is operated;
When the setting button is operated to set the calling mode, the signal level of the monitoring sensor and the sensor initial state storage unit are stored based on the change of the signal of the monitoring sensor. An abnormality determination means for comparing the signal level in the initial state and determining that an abnormality has occurred only when the result is different;
If the abnormality determining means determines that there is an abnormality, the call control means for instructing the communication control unit to make a call to a destination telephone terminal corresponding to the telephone number that can be called;
A remote monitoring device characterized by comprising: The remote monitoring device according to claim 1,
The remote monitoring device, wherein the monitoring sensor is an open / close detection switch for detecting an open state and a closed state of an open / close object. The remote monitoring device according to claim 1 or 2,
The remote monitoring device according to claim 1, wherein the abnormality determination means further includes as a determination condition that a time different from the signal level in the initial state exceeds a minimum input time. The remote monitoring device according to claim 3, wherein
The abnormality monitoring means is further provided with a determination condition that, when a signal level different from the signal level in the initial state occurs a plurality of times, a minimum gap time exists between them, as a determination condition apparatus. The remote monitoring device according to any one of claims 1 to 4,
In the storage unit, telephone numbers that can be received are further registered,
The call control means receives a call from a destination telephone terminal corresponding to the telephone number that can be received, and provides the monitoring image from the monitoring image acquisition means to the destination telephone terminal. Even when the abnormality determining means determines that an abnormality has occurred, when the received telephone number of the other party telephone terminal matches the callable telephone number stored in the storage unit, A remote monitoring apparatus that instructs the communication control unit to maintain the communication. The remote monitoring device according to any one of claims 1 to 5,
Even if the abnormality determination means determines that an abnormality has occurred while calling or communication is being performed by the communication control unit, the communication control unit maintains the call or communication. A remote monitoring device characterized by indicating. In the remote monitoring apparatus in any one of Claim 1 to 6,
In the storage unit, telephone numbers that can be received are further registered,
The call control means receives a call from a destination telephone terminal corresponding to the telephone number that can be received, and provides the monitoring image from the monitoring image acquisition means to the destination telephone terminal. When the abnormality determining means determines that an abnormality has occurred, the communication control unit forcibly cuts off communication with the destination telephone terminal and sets the telephone number that can be called to the communication control unit. A remote monitoring apparatus for instructing a call to a corresponding destination telephone terminal.

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