JP2002074531A - Security device and security system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a security device capable of remotely turning on/off its power source by a portable telephone, etc., monitoring securities of a plurality of intrusion places such as windows, a door and a shutter collectively by one unit, generating an alarm in case of emergency and calling a contact address set by a user by telephone. SOLUTION: Magnetic media like magnets 3 are attached to the plurality of burglar prevention places such as the windows 4, the door 5 and the shutter, and the magnetic flux change caused by the movement of the magnet 3 is detected remotely at a distance of several meters by a high sensitive magnetic sensor 1, thereby managing the security system only by one sensor unit 2. Thus, a telephone line can easily be utilized even without laying complicated wirings, the power source can very easily be turned on/off by telephone, and the system of telephone communication, etc., in case of emergency can very easily be constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a very simple and reliable security device and system suitable for houses, stores, offices and the like.

[0002]

2. Description of the Related Art In general, as a security device used to prevent intrusion into a building from the outside, such as home security, especially windows and doors, a security device installed between a window and a pillar when a window is opened as shown in FIG. A device that generates a security effect by turning on a switch and sounding an alarm is used. In this method, a switch or the like must be provided for every window, door, shutter, etc. of a house, and it is difficult to operate it reliably.

[0003] In addition, there is a device that uses a magnetic sensor such as a hall sensor and a magnet to recognize an emergency when a magnet installed on a window or a door is separated from a magnetic sensor installed on a window frame or a door frame. This is the same as the switch type
A pair of magnets and sensors are required for each sheet, and a plurality of devices are required to cover a plurality of places, which is troublesome.
In addition, since they are paired, the products for windows and doors are naturally different, so the installation method and usage method are different, which is troublesome.

[0004] Furthermore, these window-mounted devices will not function unless the window is completely closed, that is, the switch device installed on the window and the window frame or the magnet and the sensor are in close contact with each other. Therefore, the device cannot be switched on with any windows open.

[0005] In addition, a security device has been used in which an infrared sensor or the like is installed outdoors or indoors of a window or a door, and the operation principle is to block a suspicious person from infrared rays. However, this equipment is generally so specialized that it has to be installed by the trader and is necessarily expensive. Furthermore, when this device is installed outdoors, it often malfunctions by animals such as dogs and cats. In addition, there is a problem that if the suspicious person does not enter the room when the suspicious person does not enter the room, the device does not operate.

[0006] Conventional security devices attached to windows and doors are:
The user prepares and installs the doors and windows one by one. In addition, since each device is a completely independent device, the power switch of the device must be turned ON and OFF for each device, which is troublesome. As is often the case, the user may forget to turn on the security device, go out, and notice when he is away. In that case, he had to give up. These difficulties can be overcome by introducing a comprehensive security system, but are generally expensive.

Further, the above-described apparatus and system include:
When installing in an apartment, etc., the wall, window and door will be damaged due to the hole for installation, so the resident who is a shop child must ask for permission to install it personally, and a security device or system Is a problem to introduce.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and it is possible to install all windows, doors, shutters, etc., which can be installed very easily by an individual without relying on a contractor. And can be used without being completely closed, and does not damage installation. Moreover, there is little erroneous detection, the security effect such as the generation of an alarm sound in emergency or the communication to the user can be sufficiently exhibited, and the security device and the system which can remotely control the system by telephone or radio wave transmitter are provided. It is.

Further, it is not necessary to install the apparatus body (hereinafter referred to as a sensor unit) in a fixed place, and it is possible to place the apparatus body in a free place within a detection distance, and to provide a home security apparatus and system which do not disturb the interior. Is what you do.

[0010]

According to a first aspect of the present invention, there is provided a security device and system for detecting a change in a magnetic flux of a magnetic medium by relatively moving a magnetic medium and a magnetic sensor. Using a high-sensitivity magnetic sensor that can detect minute magnetic flux values and detecting the movement of a magnetic medium such as a distant magnet, it can detect multiple locations such as windows, doors, and shutters on structures. The sensor is characterized in that a single sensor can produce a security effect at a plurality of locations with one sensor. Of course, an electromagnet or the like may be used in addition to the magnet.

In the present invention, a magnetic impedance sensor is used as a highly sensitive magnetic sensor for detecting a minute magnetic flux such as a magnet or an electromagnet several meters away. The magnetic detection sensitivity of the magnetic impedance sensor is
The sensitivity is about 0.3 mG (milligauss), which is about 1000 times higher than that of geomagnetic 0.3G. The magnetic flux density of 0.3 mG is 5 × 5 having a surface magnetic flux density of 8200 G.
This is the value of the magnetic flux density at a position 5 m away from the x10 mm permanent magnet. It has a diameter of 10 around this sensor.
This means that the magnet has the ability to detect a change in the magnetic flux density of the magnet within the m range.

By taking advantage of this fact, a permanent magnet is attached as a magnetic medium to windows, doors, shutters, and the like, and a change in magnetic flux density due to the movement is detected by a high-sensitivity magnetic sensor, and the change is notified, thereby providing a simple and reliable method. It can be a security device.

Further, since the magnetic impedance sensor has magnetic anisotropy, the magnetic flux in all directions can be detected by arranging the sensor in the XY direction or more.

In the present invention, if the low-frequency cutoff frequency of the sensor circuit is large, it may be difficult to detect when the permanent magnet moves very slowly. In such a case,
A permanent magnet is connected to a string or chain, and one of the strings or chain is fixed to a window frame, a door frame, or a wall as shown in Fig. 8, and the magnet is used for windows, doors, and shutters, for example, by using magnetic attraction. If the string or chain is pulled out and fixed so that it will come off as soon as it is pulled, even if the suspicious person opens the window, door or shutter very slowly, the magnet will center around the place where the other end of the string is fixed by gravity. It moves greatly like a pendulum while drawing a semicircle. As a result, it is possible to reliably detect.

As a method without using a string or a chain, pulleys and gears are attached to windows, doors, shutters, etc., as shown in FIG. 7, and when the windows, doors, shutters are opened and closed, the pulleys and gears move or rotate. By doing so, the magnet is moved or rotated.

The security device and system according to the present invention are characterized in that a plurality of locations are detected by a single sensor unit, so that the following can be easily performed. One of them is that when a sensor detects an abnormality, a buzzer alarm sounds on the spot, a warning message is played, the user is contacted, and the user is notified of the preset contact information. It is easy to incorporate the function into the sensor unit body, so that the user can select one or more such security functions, and the other is to power the device and system using a remote control device or a mobile phone O
It is possible to easily incorporate a function capable of remotely performing N and OFF.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The following embodiment is an example of the embodiment of the present invention and does not limit the technical scope.

1 to 3 show a specific configuration of the present invention.
As shown in FIG. 1, the security device and system according to the present invention include one sensor unit and a plurality of magnets. This magnet is attached to windows and doors as shown in Fig. 2 and other places where security is required, as shown in Fig. 2, and the sensor unit detects the change in magnetic flux from the movement of the magnet when the windows, doors, and shutters are opened and closed, and issues an alarm. Is sounded, and a notification is sent to the telephone destination set by the user to inform the user of the abnormality, thereby forming a security device and system. By adopting such a configuration, a single device can be used as a security device for simultaneously monitoring various locations such as windows, doors, and shutters.

As the magnetic sensor, a flux gate sensor, an MR (magnetic resistance) sensor, an MI (magnetic impedance) sensor, or the like can be used. Among these various magnetic sensors, there is a magnetic impedance sensor as a sensor having the highest sensitivity. This magnetic impedance sensor has, for example, a thickness of several μm, a width of 50 μm, and a length of 1 mm.
The phenomenon that the impedance changes greatly when a magnetic flux is applied in the length direction, compared to the impedance when a few tens of MHz alternating current is applied in the length direction of this magnetic thin film by sputtering. To use.

The sensitivity of this magnetic impedance sensor is very high as described above. That is, specifically, the permanent magnet is made of a rare-earth NdFeB-based magnet or SmCo.
System magnet, size about 10mm diameter x 10m height
If a m-column magnet or the like is used, even if the magnetic impedance sensor is 5 to 10 m away, it is possible to sense the magnetic flux emitted by the magnet and its change. In other words, this sensor has the ability to detect a change in a small magnetic flux density of 0.3 mG, 1/1000 gauss of terrestrial magnetism.

Further, since this magnetic impedance sensor has magnetic anisotropy, it is possible to detect a wider range of magnetic flux by using a sensor element arranged in the X and Y directions than by using a single sensor element.

Further, it is efficient if the magnetic sensor is installed at a position where more windows, doors and shutters are within the range that can be detected by this sensor. FIG. 4 shows an actual mounting example. As shown in FIG. 4, if a magnet is attached to each part of the room such as a window, a door, or a shutter where security is required, one sensor unit can be used as a security device that covers the entire room. Moreover, even if the suspicious person notices the existence of the security device, the sensor unit is in the room and it is impossible to immediately interrupt the operation of the device. Furthermore, even if you try to remove the magnet attached to the window or door, the action itself is detected by the sensor and the security effect is created.

FIG. 5 shows an embodiment for a plurality of rooms. Since a general house does not perform magnetic shielding, it is not necessary to install a sensor unit for each room, and it is possible to very easily secure many rooms as shown in FIG. 5 and it is economical.

Further, even in the case of a place such as a school, a hospital, a public facility or the like where there are many windows, it is not necessary to install a detection unit of the security device for each window. By simply attaching the sensor unit to many windows, many windows can be protected by a single sensor unit, making it a very simple and economical security device.

FIGS. 7 and 8 show examples of the effective mounting of the magnet of the present invention. When a magnet is attached to a window (it is naturally possible to use a similar mechanism for the door and the shutter). When the window is opened as shown in FIG. The same applies to the wall surface).
Attach a magnet to the pulley. This causes the magnet to rotate, causing a large change in the magnetic flux and making the sensor easier to detect. In the example of FIG. 8, one in which a string or a chain is provided with a magnet between a window and a wall is fixed so that the string side does not come off, and the magnet side is slid by being attracted to a fixed iron piece or the like. And fix it so that it can be easily removed. When the window opens, the fixed magnet slides from the iron piece and makes a pendulum motion in the form of an arc whose radius is the length of the string or chain. In this way, a large change in the magnetic flux occurs and the sensor becomes easier to detect.

Next, an outline of the system of the present invention will be described with reference to FIG. When a suspicious person opens a window, door, shutter, or the like, a sensor detects movement of a magnet attached to the window, door, or shutter, and an alarm circuit generates an alarm sound. It is preferable to use a speaker, a piezoelectric element, or the like for the alarm sound. In addition, the notification circuit notifies the user or a telephone number set by the user using a telephone line that the abnormality has occurred, and performs a crime prevention operation. The power supply of the system is turned on and off using a radio wave transmitting device or a mobile phone using a control circuit. In this way, when going out, the power can be turned on after getting out of the room and locked, which is convenient because there is no fear of generating an unnecessary alarm sound.

The security device of the present invention integrates security functions at a plurality of locations into one sensor unit, so that complicated functions such as telephone notification and power ON / OFF can be remotely controlled, and systemization can be facilitated. Excellent in point.

FIGS. 1 to 8 show an embodiment of the present invention. In the drawings, the portions denoted by the same reference numerals as those in the drawings represent the same components.

It should be noted that the present invention is not limited to the illustrated example described above, and it is a matter of course that various changes can be made without departing from the spirit of the present invention.

[0030]

As described above, according to the security devices and systems according to the first, second, and third aspects of the present invention, the change in magnetic flux due to the movement of the magnetic medium can be remotely monitored by using a high-sensitivity magnetic sensor. Depending on the detection method,
It is possible to achieve an excellent effect that a plurality of places are simultaneously crime-prevented by using one sensor unit.

Further, since the security device and the system according to the fourth aspect use magnets for the magnetic medium, even if they are installed in a plurality of locations, electric wiring is not performed at all the installation locations as compared with the case of using the coil type. Therefore, an excellent effect that it can be easily installed at low cost can be obtained.

In the security device and system according to the fifth and sixth aspects, since the magnet is moved more complicatedly than the operation of the window or the door, a larger magnetic flux change can be generated. Thereby, an excellent effect that the detection by the sensor can be performed more reliably can be obtained.

In the security device and system according to the seventh, eighth and ninth aspects, since a plurality of locations are collectively controlled by one sensor unit, the power of the device is turned on and off.
It is possible to easily construct a system for contacting the user in F or in an emergency. Thereby, unlike the conventional window-attached or door-attached security device, an excellent effect that a security system in a form closer to a more comprehensive security system can be provided inexpensively and easily can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an apparatus configuration of the present invention.

FIG. 2 is a perspective view showing an embodiment of the present invention when used for a window.

FIG. 3 is a perspective view showing a case where the present invention is used for a door in one embodiment of the present invention.

FIG. 4 is a plan view showing a case where the whole room is targeted in one embodiment of the present invention.

FIG. 5 is a plan view showing a case where a plurality of rooms are targeted in one embodiment of the present invention.

FIG. 6 is a perspective view showing a case where a plurality of windows are targeted in one embodiment of the present invention.

FIG. 7 is a perspective view showing a mechanism in which a magnet is rotated in accordance with opening and closing of a window using wheels in an embodiment of installation of a magnetic medium according to the present invention.

FIG. 8 is a view showing a mechanism for installing a magnetic medium according to the present invention, in which a window is opened using a string or a chain so that a magnet performs a pendulum motion on a circumference having a radius corresponding to the length of the string or the chain. It is a top view.

FIG. 9 is a flowchart showing functions of the present invention.

FIG. 10 is a plan view showing an example of an embodiment of a general switch type security device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic sensor 2 Sensor unit 3 Magnet 4 Window 5 Door 6 Wheel 7 String, chain, etc. 8 Iron piece 9 Wall mounting side switch part 10 Window mounting side switch part

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yutaka Kitagawa 35-2-207 Suwa, Tekurata, Natori-shi, Miyagi F-term (reference) 5C084 AA02 AA07 AA13 AA19 BB05 BB25 CC02 CC03 CC04 DD21 EE03 EE04 FF02 FF04 FF27 GG07 GG09 HH02 HH03 HH13 5C087 AA03 AA42 AA44 BB03 BB12 BB18 BB64 BB74 DD05 DD25 DD26 EE07 EE12 EE13 FF01 FF02 FF04 FF17 FF20 FF23 GG66 GG83

Claims (9)

[Claims] 1. A construction using a magnetic material for generating a magnetic flux and a high-sensitivity magnetic sensor capable of detecting the value of a minute magnetic flux or a change in the value even at a distance of several cm or more from the magnetic material. A security device and system for detecting opening and closing of a plurality of places such as windows, doors, and shutters of objects. 2. The magnetic sensor according to claim 1, wherein
Security equipment and system using a magnetic impedance sensor. 3. The security device according to claim 2, wherein the sensor element is arranged in the X-Y2 direction or more to detect omnidirectional magnetic flux. . 4. The security device and system according to claim 1, wherein a permanent magnet is used as a magnetic material for generating a magnetic flux, and the magnetic flux is detected from a distance of several meters by the sensor. Security equipment and systems. 5. When the permanent magnet according to claim 4 is installed on a window, a door, or a shutter, the magnet is fixed with a string or a chain, and the other end of the string is fixed on a wall or a pillar. For movement exceeding the length of the string even if you open the window slowly,
A security device and system wherein a magnet attracted to a window or the like moves away from the window, moves largely, and can be detected. 6. The permanent magnet according to claim 4, wherein the magnet is not directly attached to a window, a door, or a shutter.
Security devices and systems characterized by indirectly moving or rotating magnets when they move. 7. In the security device and system according to claim 1, when opening / closing of a window, a door, a shutter or the like is detected, a system for generating a buzzer alarm sound or notifying a security company or the like on the spot is selected. Security devices and systems characterized by being able to do so. 8. The security device and system according to claim 1, wherein the power of the device can be turned on and off remotely using a radio wave transmitting device. 9. The security device and system according to claim 1, wherein the power of the device can be turned on and off using a telephone line.