JP5360715B2 - Wireless security alarm device - Google Patents

Description

  The present invention relates to a security alarm device using radio.

  Some crime prevention alarm devices that detect opening and closing of windows and doors using a magnetic sensor and a magnet have a function of generating an alarm by sounding a built-in buzzer when the window is opened. Such products are sufficient for the purpose of threatening those who have illegally opened windows and reporting to the neighborhood, but when installing alarm devices on multiple windows, switch alarm devices on each window. The operation must be turned on and off.

  As a method for improving this, there is a security alarm device composed of a sensor device attached to a window and a main device that remotely controls them, and there is a product that remotely monitors a plurality of windows by connecting the sensor device and the main device with wiring. The installation cost for wiring work in the house is high, and in the existing house, the wiring is exposed indoors, and the scenery is damaged.

  As a method of eliminating the wiring, it is effective to connect the sensor device and the main device by wireless communication. An outline of a security alarm device using radio is shown in FIG. The sensor device 1 is attached to the window, and the magnet 2 is attached to the fixed part of the window frame. The main device 4 is connected to the wireless device 3 and a buzzer 7 that emits an alarm sound, and is connected to a communication network such as the Internet.

  The sensor device 1 wirelessly transmits the result of detecting the open / closed state of the window. The wireless device 3 of the main device 4 receives this and issues a warning sound with the buzzer 7. The alarm can also be received from a remote location via the Internet or the like.

  When connecting the sensor device and the main device wirelessly, if there is no means to clarify which main device the sensor device belongs to, when the same device is used within the reach of nearby radio waves, There is a possibility of erroneously recognizing information emitted by the sensor device. For this purpose, the sensor device is provided with an identification code, the identification code is transmitted together with the window opening / closing information, and the main device collates the received identification code. In addition, a plurality of sensor devices can be managed by one main device by providing an identification code in the sensor device.

  Thus, when wirelessly connecting the sensor device and the main device, the problem is the reliability of wireless communication. If the open / closed state of the window is not transmitted to the main device, or if there is an error in information, a malfunction will occur as a security alarm device. Malfunctions due to instability of communication impairs the reliability of the crime prevention device, such as no false alarms or alarms, so this must be eliminated as much as possible.

  When installing the sensor device or the main device, it is necessary to sufficiently confirm that communication can be stably performed within a range where radio waves reach. However, even if it is stable at the time of installation, if radio waves in the same frequency band begin to be used nearby, radio wave interference may occur and communication may become unstable. This is a problem that is difficult to understand for general users who are not radio experts, and improving the reliability of radio communication is an important issue for contractors who provide security alarm devices using radio. .

  Even if convenience is improved by using wireless communication, it is not preferable for the user that the power consumption of the sensor device is increased and the battery life is shortened. Since the sensor device is attached to the window, a large battery cannot be mounted. Even when wireless is used, it is desirable to reduce the power consumption of the sensor device as much as possible.

  The problem to be solved by the present invention is to improve the reliability of wireless communication and to reduce the power consumption of the sensor device with a crime prevention alarm device using radio.

  Another problem to be solved by the present invention is to provide a security alarm device that can check the open / closed state of a window at any time.

In the present invention, the above-described problems are solved by the following means. A security alarm device used as a security system for wirelessly monitoring remotely, comprising a sensor device for detecting opening and closing of windows, doors, etc., means for storing and displaying information of the sensor device, and a sounding means for issuing an alarm It was composed of the main unit.
The sensor device is attached to a window, a door or the like together with a magnet, and has a built-in magnetic sensor for detecting the proximity of the magnet, and a code indicating the state of the magnetic sensor when the output of the magnetic sensor changes and the sensor device. A wireless device that wirelessly transmits a telegram including an identification code for identification and an error detection code to the main device .
The main device has a function of the sensor device comprises a wireless device for receiving the transmitted wireless, collates and said identification code of the message transmitted from the sensor device and pre-registered identification code to the main device .
The main device that has received the transmission signal from the sensor device performs post-reception error detection and identification code verification, confirms that the signal is a transmission signal from the sensor device registered in itself, and then receives the signal as a reception confirmation signal. Send the received message as it is.
The sensor device receives the reception confirmation signal, confirms that it matches the message sent by itself, and if not, transmits and confirms the transmission up to a predetermined number of times until it matches. It has a function of repeating the signal reception operation.
The sensor device has a function of periodically transmitting the state wirelessly in addition to when the output of the magnetic sensor changes.
In security alarm device having the above configuration and functions, the sensor device, when transmitted at regular intervals wirelessly the state in addition to when the output of the magnetic sensor is changed, the main apparatus receives this The problem is solved by providing a security alarm device that can periodically update the information of the sensor device stored and displayed by itself.

The sensor device includes a sounding device that issues an alarm, and in the sensor device capable of controlling whether or not the sounding device can be sounded and stopped by a sounding control signal sent from the main device, the sounding control signal is transmitted during the period of the reception confirmation signal. It may be a security alarm device provided inside.

The sensor device is provided with a sounding device that emits an alarm sound, and if the electronic confirmation of the reception confirmation signal cannot be obtained even if transmitted for a predetermined number of times , the sensor device emits an alarm sound. In some cases , the user may be notified of an abnormality in the device .

The present invention transmits the information wirelessly only when there is a change in the output of the magnetic sensor built in the sensor device and by regular communication at regular time intervals, so that the power consumption of the sensor device can be extremely reduced. Information is not delivered by sending the information sent by the sensor device back from the main device, and repeating the transmission a predetermined number of times until it matches the content sent by the sensor device. Communication errors can be reduced and communication reliability can be improved.

  In addition, when the contents are not matched even after repeated transmissions a predetermined number of times, an alarm is sounded from the sounding device provided in the sensor device to notify the communication abnormality, prompting the user to reconfigure and install the device, It is also possible to notify of abnormalities.

  According to the present invention, the open / closed state of the window can be confirmed at any time by displaying or retrieving information stored in the main device. The sensor device periodically transmits the open / closed state of the window and updates the information stored in the main device, thereby improving the reliability of the information stored in the main device.

  With the function to make the sounding device built in the sensor device sound according to the control information from the main device, it is possible to set the sounding / non-ringing of alarm sound to multiple sensor devices simultaneously or remotely via the Internet These settings are also possible from the ground.

  An outline of the security alarm device according to the present invention is shown in FIG. The sensor device 1 is attached to the window, and the magnet 2 is attached to the fixed part of the window frame. The main device 4 uses a personal computer and operates dedicated software on the personal computer. The personal computer is provided with a storage device 5 for storing information of the sensor device 1, a display 6 for displaying an open / closed state of a window, and a buzzer 7 for generating an alarm sound. Connected to the network. A wireless device 3 for main device that performs wireless communication with the sensor device 1 is connected to the personal computer via an external interface such as a USB. The main device 4 may be a dedicated device in which a wireless device, a storage device, a display, a buzzer, a communication line network interface, and a CPU are housed in one casing.

  The sensor device 1 wirelessly transmits the result of detecting the open / closed state of the window. When the wireless device 3 for the main device receives the information, the personal computer stores the information in the storage device 5 and simultaneously displays the window state on the display 6. When the dedicated software is set to “Beginning of warning”, the opening / closing state of the window changes after that, and the sensor device 1 detects this, and when the personal computer receives this information wirelessly, it compares it with the previous information stored. Then, according to the result, an alarm sound is generated by the buzzer 7 and an operation such as displaying a caution on the display 6 is performed. The sensor device 1 can also be equipped with a buzzer that emits an alarm sound. Receiving alarms, checking the open / closed state of windows, and setting operations can also be performed from a remote location via the Internet or the like.

  FIG. 2 shows wireless communication between the sensor device and the main device over time as a specific example of the security alarm device of the present invention. The main device receives the transmission of the sensor device, the main device performs post-reception error detection and collation of the identification code, and after confirming that it is a transmission signal from the sensor device registered in itself, received as a reception confirmation signal Send the same message as the message. The sensor device that has received the reception confirmation signal compares the message sent by itself with the message in the received reception confirmation signal, and ends the series of transmission operations if they match.

  If the messages do not match, the same content is transmitted again and the reception confirmation signal is received. Reliable communication is ensured by repeating this series of operations until the messages match. The maximum number of times n is set in advance.

  If a message match is not obtained even after re-transmission of the maximum number of repetitions, a warning sound can be emitted from the ringing device provided in the sensor device to notify the user. If normal wireless communication is not possible even after repeating a certain number of times, it is possible that the radio wave has not arrived, there is a radio wave that interferes, there is something wrong with the settings, or there is something wrong with the device Because of this, inform users of this situation and take appropriate measures.

  If for some reason the data indicating the open / closed state of the window stored in the personal computer (main device) is destroyed or deleted, the change in the state of the window cannot be judged properly and the main device checks the open / closed state of the window. I can't do that. In addition, when such an abnormality occurs when the sensor device has a function of transmitting a control signal to the sensor device, which will be described later, no alarm is issued even if the sensor device performs transmission when there is a change in the open / closed state of the window. There is.

  Therefore, as shown in FIG. 3, the sensor device periodically transmits the opening / closing state of the window, updates the information stored in the personal computer, and has a function of self-repairing if there is an abnormality. The situation can be avoided. In FIG. 3, transmission is performed at a constant interval of t seconds. However, for the purpose of the present invention, the transmission time interval does not necessarily have to be constant. In order to reduce the power consumption of the sensor device, it is desirable that this time interval is long. Therefore, in the embodiment of the present inventor, 120 seconds is used.

  By changing the message sent from the sensor device partially according to the setting state of the main device and returning it as a reception confirmation signal, the alarm sound of the sensor device can be controlled from the main device. FIG. 4 shows the reception confirmation signal at this time. The sensor device transmits a part of the message including a control signal (symbol) indicating the state of the security alarm device (warning state: ringing enabled or warning release state: non-ringing), and the main device according to its own setting This code is changed and returned. The sensor device makes a determination by excluding this control signal portion as a message matching condition for determining retransmission as described above.

  The control signal only needs to determine whether or not to sound an alarm when the sensor device detects a change in the open / closed state of the window, so it is in time to add the control signal to the reception confirmation signal and transmit it. . Further, the battery consumption of the sensor device can be reduced as compared with the case where the control signal is transmitted alone in advance.

  In this method, in addition to being able to set a warning state-awareness release state for each sensor device by operating the switch of the sensor device and display and check the state on the main device, the main device can also detect each sensor device or a plurality of sensors. It becomes possible to change the state of the apparatus all at once.

  The ringing device built in the sensor device usually rings when a window to which the sensor device is attached is opened. However, in some situations, you may not want it to ring when the window is opened. For example, when the manager is at home and the manager opens the window, the alarm does not sound even if the sensor operates. Although it is possible to set the ringing to OFF with the switch of the sensor device, when a plurality of sensor devices are installed, the setting change operation is very troublesome.

  With the function to sound according to the control signal from the main device, it is possible to set alarm sound / non-alarm for a plurality of sensor devices simultaneously or individually, and these settings can be set from remote locations via the Internet. Since it is possible to check, lock all windows when going out, set the system to “warning” (can ring) from the outside with a mobile phone, and set to “warning release” (non-ringing) when going home It becomes possible to enter the room from.

  Overview of wireless security alarm device   Wireless communication of security alarm device according to the present invention   Periodic transmission of the sensor device according to the invention   Transmission of an acknowledgment signal with a control signal according to the present invention   Overview of the wireless security alarm device according to the present invention

DESCRIPTION OF SYMBOLS 1 Sensor apparatus 2 Magnet 3 Wireless apparatus for main apparatuses 4 Main apparatus 5 Storage apparatus 6 Display 7 Buzzer 8 Window

Claims (3)

A security alarm device used as a security system for wirelessly monitoring remotely, comprising a sensor device for detecting opening and closing of windows, doors, etc., means for storing and displaying information of the sensor device, and a sounding means for issuing an alarm It was composed of the main unit.
The sensor device is attached to a window, a door or the like together with a magnet, and has a built-in magnetic sensor for detecting the proximity of the magnet, and a code indicating the state of the magnetic sensor when the output of the magnetic sensor changes and the sensor device. A wireless device that wirelessly transmits a telegram including an identification code for identification and an error detection code to the main device .
The main device has a function of the sensor device comprises a wireless device for receiving the transmitted wireless, collates and said identification code of the message transmitted from the sensor device and pre-registered identification code to the main device .
The main device that has received the transmission signal from the sensor device performs post-reception error detection and identification code verification, confirms that the signal is a transmission signal from the sensor device registered in itself, and then receives the signal as a reception confirmation signal. Send the received message as it is.
The sensor device receives the reception confirmation signal, confirms that it matches the message sent by itself, and if not, transmits and confirms the transmission up to a predetermined number of times until it matches. It has a function of repeating the signal reception operation.
The sensor device has a function of periodically transmitting the state wirelessly in addition to when the output of the magnetic sensor changes.
In the security alarm device having the above configuration and function, when the sensor device periodically transmits the state wirelessly in addition to when the output of the magnetic sensor changes, the main device receives this A security alarm device characterized in that the information of the sensor device stored and displayed by itself can be updated periodically. The sensor device includes a sounding device that issues an alarm, and in the sensor device capable of controlling whether or not the sounding device can be sounded and stopped by a sounding control signal sent from the main device, the sounding control signal is transmitted during the period of the reception confirmation signal. The security alarm device according to claim 1, wherein the security alarm device is provided inside . The sensor device is provided with a sounding device that emits an alarm sound, and if the electronic confirmation of the reception confirmation signal cannot be obtained even if transmitted for a predetermined number of times , the sensor device emits an alarm sound. The crime prevention alarm device according to claim 1, wherein an abnormality of the device is transmitted to the user .

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