JP2002358579A - Monitoring sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize multifunction, compactness and a low cost concerning a monitoring sensor suitable for a crime prevention system, etc. SOLUTION: In the monitoring sensor which is provided with a sensor main body 11A arranged on a wall 13 and having a magnetic sensor 23 and a magnet member 12 arranged on a door 14 moving toward the wall 13 and which detects the displacement of this member 12 with the sensor 23 to detect moving of the door 14, a camera 22 for imaging the movable position of at least the door 14 is provided inside of the main body 11a with the sensor 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a monitoring sensor, and more particularly to a monitoring sensor suitable for use in a security system or the like.

[0002]

2. Description of the Related Art In recent years, awareness of crime prevention has been increasing, and with this, home security has been widely spread. In particular, recent trends in crime include:
There is a high tendency to invade from the door of the entrance as typified by picking, and to enter from the window where the key is forgotten. For this reason, it is necessary to strictly monitor particularly at places where doors and windows are opened and closed.

Conventionally, a monitoring sensor installed in a place where an entrance and a window are opened and closed (hereinafter, a place monitored by these monitoring sensors is referred to as a monitoring target) generally uses a magnetic sensor. Was. This monitoring sensor consists of a sensor body fixedly installed on the wall to be monitored,
It is constituted by a magnet member disposed on a door or a window to be monitored.

A magnetic sensor is provided inside the sensor body. When the door or window is closed, the magnet member is configured to be located at a position facing the sensor body. Therefore, when the door or the window is opened, the magnet member disposed on the door or the window moves and separates from the sensor main body accordingly, so that the magnetic force applied from the magnet member to the magnetic sensor is reduced. The monitoring sensor is configured to detect that a door or a window is opened based on a change in magnetic force applied to the magnetic sensor.

On the other hand, a monitoring sensor provided with a magnetic sensor can detect an abnormality, but cannot record an intruder. For this reason, a surveillance sensor in which a camera is arranged on a surveillance target so that an image of an intruder can be recorded is provided.

Conventional monitoring sensors are independent sensors depending on the type. Therefore, a magnetic sensor that detects abnormal movement of entrances, windows, and the like to be monitored,
When installing a camera that captures an image of an intruder, a separate monitoring sensor is attached to the monitoring target.

[0007]

As described above, conventionally, when there are a plurality of types of monitoring sensors necessary for performing security, it is necessary to separately arrange each monitoring sensor on a monitoring target. There was a problem that installation was troublesome. Further, in a configuration in which each monitoring sensor is independent, there is a problem that the cost of each monitoring sensor is higher than a configuration in which a sensor and a camera are combined. Further, there is a problem that the presence of a plurality of monitoring sensors in the monitoring target is not preferable in terms of the appearance of the monitoring target entrance and windows.

The present invention has been made in view of the above points, and has as its object to provide a compact and low-cost monitoring sensor having a plurality of monitoring functions.

[0009]

Means for Solving the Problems In order to solve the above problems, the present invention is characterized by taking the following means.

According to a first aspect of the present invention, there is provided a sensor body provided on a fixed portion and having a magnetic sensor, and a magnet member provided on a movable portion moving with respect to the fixed portion. A monitoring sensor configured to detect the displacement of the movable member by detecting the displacement of the magnet member by the magnetic sensor; and a camera that captures at least a movable position of the movable portion on the sensor body. Is provided internally.

According to the present invention, since the camera is arranged in the sensor body in which the magnetic sensor is provided, it is not necessary to separately mount the magnetic sensor and the camera, and the mounting work can be simplified. it can. In addition, since both the magnetic sensor and the camera are disposed in the sensor main body, the monitoring target (for example, an entrance or a window).
Since only one monitoring sensor can be attached to the camera, the appearance of the monitored object is not impaired.

According to a second aspect of the present invention, in the surveillance sensor according to the first aspect, the camera is activated when the magnetic sensor detects the movement of the movable part. It is.

According to the present invention, the camera is started only when the movable part moves, that is, only when an abnormality is detected, so that the power consumption of the monitoring sensor is reduced, and the recording device for recording the image captured by the camera is provided. Can be reduced in storage capacity.

According to a third aspect of the present invention, in the surveillance sensor according to the first or second aspect, a shutter opening / closing mechanism for opening a shutter of the camera with movement of the movable portion is provided on the sensor main body. It is a feature.

According to the above-mentioned invention, by providing the shutter opening / closing mechanism for opening the shutter of the camera with the movement of the movable portion in the sensor main body, it is possible to prevent the dust from adhering to the lens of the camera and making it impossible to take an image.

According to a fourth aspect of the present invention, in the monitoring sensor according to any one of the first to third aspects, the magnetic force of the magnet member is applied to the camera in the sensor main body. A magnetic shield member is provided for prevention.

According to the above invention, the magnetic shield member for preventing the magnetic force of the magnet member from being applied to the camera is provided in the sensor main body, so that the magnetic force generated by the magnet member is shielded by the shield member, and Since the application can be prevented, the imaging process by the camera can be prevented from being affected by the magnetic force.

[0018]

Next, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 3 are views for explaining a monitoring sensor 10A according to a first embodiment of the present invention. FIG.
2 shows an installation example of the monitoring sensor 10A, FIG. 2 shows a cross section of the monitoring sensor 10A, and FIG. 3 shows a security system using the monitoring sensor 10A. In the present embodiment, the door 14 is taken as an example of a monitoring target.

As shown in FIGS. 1 and 2, the monitoring sensor 10A comprises a sensor body 11A and a magnet member 12. The sensor body 11A includes a door 14
Is provided on the wall 13 (fixed portion) provided with. The magnet member 12 is disposed on a door 14 (movable part) disposed on a door opening 15 of the wall 13. Therefore, the magnet member 12 is configured to move as the door 14 moves (rotates).

As shown in FIG. 2, the sensor body 11A includes a camera 22 and a magnetic sensor 23 inside a housing 20.
Are provided together. Camera 22 is a small CC
This is a D (solid-state image sensor) camera, so that even if the camera 22 is provided inside, the sensor main body 11A has a small shape. Therefore, even if the sensor main body 11 </ b> A is arranged above the door opening 15 of the wall 13, the appearance of the monitoring target is not impaired.

The camera 22 is fixed to the housing 20 so that only the lens portion 24 is exposed to the outside through an opening 25 formed in the housing 20. Also,
The camera 22 is configured to capture an image of at least a range in which the door 14 moves, and generate an imaging signal. The reason why the camera 22 takes an image of the range in which the door 14 moves as described above is that an intruder often enters through the door 14 as described above.

However, the image pickup position of the camera 22 is not limited to this. For example, by providing an image pickup position adjusting mechanism for adjusting the image pickup range of the camera 22 manually or automatically, the position other than the movement range of the door 14 can be adjusted. It is also possible to adopt a configuration in which (the position where the image of the intruder is most easily captured) is captured. In this embodiment, a color CCD is used as the camera 22. However, a monochrome CCD or an infrared-compatible CCD for nighttime may be used.

The magnetic sensor 23 is provided at the bottom of the housing 20. This magnetic sensor 23 is
When the door 14 is closed (the state shown in FIG. 2),
Are arranged so as to face the magnet member 12 disposed in the first position. Further, a magnet 26 is provided in the magnet member 12.

Therefore, when the door 14 is closed, the magnet 26 applies a magnetic force to the magnetic sensor 23, and the magnetic sensor 23 generates an output signal (output signal O).
N). When the door 14 is opened, the magnet 26 (magnet member 12) is separated from the magnetic sensor 23 and the application of the magnetic force is released, so that the magnetic sensor 23 stops the output signal (output signal OFF).

Therefore, the open / closed state of the door 14, that is, the moving state of the door 14, can be detected from the output of the magnetic sensor 23. As the magnetic sensor 23, for example, an active magnetic sensor, a semiconductor magnetic sensor, or the like can be used.

The monitoring sensor 10A having the above configuration is
As shown in FIG. 3, it is connected to the processing device 30. The processing device 30 performs a monitoring process based on a signal sent from the monitoring sensor 10A.

The processing device 30 includes an image processing circuit 31, a display device 32, a hard disk device 33. It comprises an input device 34, a transmitting device 35, a transmitting device 35 and the like. The image processing circuit 31 performs image processing for generating an imaging screen from an imaging signal sent from the camera 22. The image signal generated by the image processing circuit 31 is transmitted to the control device 36.
Sent to

The display device 32 is, for example, a liquid crystal display device, and displays an image taken by the camera 22, a display indicating the state of the processing device 30, or a content input by an input device 34 described later. is there. The hard disk device 33 is a storage device that records an image screen captured by the camera 22.

Therefore, an intruder who has entered through the door 14 is imaged by the camera 22 and recorded on the hard disk device 33. The record of the hard disk device 33 can be used as evidence when arresting an intruder.

The input device 34 is, for example, a keyboard.
It is used when performing various input processes on the processing device 30. From the input device 34, an input process such as a command to start and stop the security system or various settings for the hard disk device 33 is performed.

The transmission device 35 is a device for transmitting the occurrence of the abnormality and the image captured by the camera 22 to the mobile phone 37 or the security company 38 when an abnormality occurs in the door 14. Therefore, the inhabitants to be monitored can know that an abnormality has occurred in the door 14 even when they are away from home, and can confirm the state of occurrence of the abnormality by the captured image of the camera 22 sent thereto.
Thereby, it is possible to report to the police even from outside. Further, in the configuration in which the occurrence of the abnormality and the captured image of the camera 22 are transmitted to the security company 38, the security company 38 can recognize the state of the occurrence of the abnormality and take appropriate measures.

The control device 36 is, for example, a microcomputer and performs a monitoring process based on a signal sent from the monitoring sensor 10A. Specifically, when a signal indicating that the door 14 is opened (output signal OFF) is transmitted from the magnetic sensor 23 in a state where the security device activation instruction is given from the input device 34,
The control device 36 activates the camera 22 and simultaneously operates the camera 2.
The image captured in step 2 and generated by the image processing circuit 31 is recorded in the hard disk device 33.

At the same time as this processing, a warning indicating that an abnormality has occurred from the transmitting device 35 to the mobile phone 37 and an image taken by the camera 22 and transmitted. Further, the control device 36 transmits a similar signal to the security company 38. Thereby, an intruder from the door 14 is detected early,
The police or security company 38 can be notified. In addition, since the image of the intruder is recorded on the hard disk device 33, early arrest of the intruder can be enabled.

As described above, the monitoring sensor 10A according to this embodiment has a configuration in which the camera 22 and the magnetic sensor 23 are both provided inside the sensor main body 11A. Therefore, it is not necessary to separately attach the camera 22 and the magnetic sensor 23 to the monitoring target, and it is possible to simplify the attaching work.

By arranging the camera 22 and the magnetic sensor 23 together in one sensor main body 11A, only one monitoring sensor 10A can be attached to the object to be monitored.
2 and 23, so that the cost of the monitoring sensor 10A can be reduced. Further, as described above, the camera 22 and the magnetic sensor 23 are connected to one sensor body 1.
By arranging the monitoring sensor 10A inside the monitoring sensor 10A, the monitoring sensor 10A can be made compact, so that the appearance of the monitoring target (the wall 13 or the door 14) can be prevented from being deteriorated.

In this embodiment, when the magnetic sensor 23 detects the movement of the door 14, the control device 36 starts the camera 22. Thereby, since the camera 22 is activated only when an abnormality is detected in the door 14,
Reduction of power consumption of monitoring sensor 10A and camera 22
It is possible to reduce the storage capacity of the hard disk device 33 that records the image captured by the above and prevent the camera 22 from deteriorating over time.

FIG. 4 shows a monitoring sensor 10B according to a second embodiment of the present invention. In FIG. 4, the same components as those in FIGS. 1 to 3 used in the description of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. The same applies to the third embodiment shown in FIG.

In the monitoring sensor 10B according to the present embodiment,
The shield member 40 is provided in the housing 20 of the sensor main body 11B. The shield member 40 is made of a magnetic metal material and functions as a magnetic shield. The shield member 40 is disposed between the position where the camera 22 is disposed and the position where the magnetic sensor 23 is disposed.

As described above, the camera 22 and the magnetic sensor 23
By disposing the shield member 40 between them, it is possible to prevent the magnetic force generated by the magnet member 12 from affecting the camera 22. Therefore, it is possible to perform the imaging process by the camera 22 in a favorable state. In addition, the shield member 40 prevents an external magnetic field from being applied to the magnetic sensor 23, so that the magnetic sensor 23 can be prevented from malfunctioning due to disturbance.

FIG. 5 shows a monitoring sensor 10C according to a third embodiment of the present invention. The monitoring sensor 10C according to the present embodiment includes a shutter member 4 inside the sensor body 11C.
5 (shutter opening and closing mechanism) is provided, and the lens unit 24 of the camera 22 is opened and closed as the door 14 moves. The transmission device 35 includes a flexible sheet portion 46 and a magnet 47 as shown in an enlarged manner in FIG.

The flexible sheet portion 46 is a sheet-like member having flexibility, and is made of a material that does not transmit light, or has a structure in which black paint is applied. A shutter opening 48 is formed at a predetermined position of the flexible sheet portion 46, and the shutter opening 48 is configured to face the opening 25 as described later when an image is captured by the camera 22. Also, the flexible sheet portion 46
Is provided with a magnet 47, which has a magnetic polarity attracted by the magnet member 12 provided on the door 14.

The shutter member 45 having the above structure is
As shown in FIG. 5, it is attached to the bottom of the housing 20 so as to slide in the directions of arrows A1 and A2 in the figure. In a state where the door 14 is closed, the shutter member 45 is positioned only in the direction of the arrow A2 in the drawing, and the magnet 47 and the magnet member 12 are configured to face each other. As described above, the magnet 47 and the magnet member 12
Are magnetic polarities attracted to each other. Therefore,
In the state where the door 14 is closed, the shutter member 45 maintains the state (the state shown in FIG. 5) positioned only in the direction of arrow A2 in the figure.

On the other hand, when the door 14 is opened, the magnet member 12 moves in the direction indicated by the arrow X1 in FIG. As a result, the magnet 47 attracted by the magnet member 12 also moves in the arrow X1 direction in the figure, and the shutter member 45 moves in the arrow A1 direction in the figure.

Then, the shutter member 45 is moved in the direction indicated by an arrow A in FIG.
When the shutter opening 48 moves to the limit in one direction, the shutter opening 48 faces the lens unit 24 of the camera 22, and the shutter is opened. The shutter opening 48 and the lens unit 2
In a state where the camera 4 and the camera 4 face each other, an image pickup process by the camera 22 is performed.

When the door 14 is closed again, the operation of the door 14 causes the magnet member 12 to move in the direction of arrow X2 in the figure. Therefore, the magnet 47 that has moved in the direction of the arrow A1 in the figure moves in the direction of the arrow A2 in the figure by being attracted to the magnet member 12, and the shutter member 45 returns to the position shown in FIG. Thus, the lens portion 24 of the camera 22 is again covered by the flexible sheet portion 46.

As described above, in this embodiment, the lens portion 24 of the camera 22 is
When the camera 22 is not used (that is, when the door 14 is closed), the lens member 24 is covered with the shutter member 45 by providing the shutter member 45 for opening and closing the camera.

Therefore, compared to a configuration in which the lens portion 24 of the camera 22 is always exposed, dust can be prevented from adhering to the lens of the lens portion 24, so that it is possible to prevent an image from becoming impossible due to the adhesion of dust. it can.

In each of the above embodiments, the configuration in which the monitoring sensors 10A to 10C are disposed on the wall 13 and the door 14 has been described as an example. However, the application of the present invention is not limited to this. , Windows, entrances and the like can be widely applied to monitoring of places having doors for opening and closing.

In the above-described embodiment, the camera 22 and the magnetic sensor 23 are provided in the sensor bodies 11A to 11C of the monitoring sensors 10A to 10C. However, the temperature sensor, the microphone, and the gas sensor are provided in the sensor body 11A. It is also possible to adopt a configuration in which the components are collectively arranged in the １１11C.

[0051]

According to the present invention as described above, the following various effects can be realized.

According to the first aspect of the present invention, there is no need to separately mount the magnetic sensor and the camera, and the mounting operation can be simplified. In addition, since both the magnetic sensor and the camera are disposed in the sensor body, only one monitoring sensor can be attached to the monitoring target (for example, an entrance or a window), so that the appearance of the monitoring target is not damaged. Can be prevented.

Further, according to the second aspect of the present invention, it is possible to reduce the power consumption of the monitoring sensor and the storage capacity of the recording device that records the image captured by the camera.

Further, according to the third aspect of the present invention, it is possible to prevent dust from adhering to the lens of the camera and making it impossible to take an image.

According to the fourth aspect of the present invention, the magnetic force generated by the magnet member is shielded by the shield member and can be prevented from being applied to the camera, so that the image pickup processing by the camera is affected by the magnetic force. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing an application example of a monitoring sensor according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the monitoring sensor according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a monitoring system using a monitoring sensor according to a first embodiment of the present invention.

FIG. 4 is a sectional view of a monitoring sensor according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a monitoring sensor according to a third embodiment of the present invention.

FIG. 6 is an enlarged plan view showing a shutter member used for a monitoring sensor according to a third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10A to 10C monitoring sensor 11A to 11C sensor body 12 magnet member 20 housing 22 camera 23 magnetic sensor 24 lens unit 30 processing device 31 image processing circuit 32 display device 33 hard disk device 34 input device 35 transmission device 36 control device 37 mobile phone 38 security Company 40 Shielding member 45 Shutter member 46 Flexible sheet part 47 Magnet 48 Shutter opening

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G08B 25/10 G08B 25/10 D H04N 5/225 H04N 5/225 C 7/18 7/18 EF term (Ref.) AA24 AA25 BB03 BB12 BB18 BB74 DD05 DD24 EE04 EE07 FF01 FF04 FF17 FF19 FF20 GG02 GG08 GG19 GG23 GG32 GG66 GG67 GG70 GG71 GG83

Claims (4)

[Claims] 1. A sensor body provided on a fixed part and having a magnetic sensor, and a magnet member provided on a movable part moving with respect to the fixed part, wherein the magnet member is provided. In the monitoring sensor configured to detect the movement of the movable unit by detecting the displacement of the movable unit by the magnetic sensor, a camera that captures at least the movable position of the movable unit is provided in the sensor main body. Monitoring sensor featuring. 2. The monitoring sensor according to claim 1, wherein the camera is activated when the magnetic sensor detects the movement of the movable part. 3. The monitoring sensor according to claim 1, wherein a shutter opening / closing mechanism for opening a shutter of the camera in accordance with movement of the movable portion is provided in the sensor main body. 4. The monitoring sensor according to claim 1, wherein a magnetic shield member for preventing a magnetic force of the magnet member from being applied to the camera is provided in the sensor main body. A monitoring sensor characterized in that: