JP2006323755A - Prowler intrusion monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein an acceleration sensor used in existing prowler intrusion monitoring systems for anomaly detection from a prowler intrusion through a door or window and the like may cause wrong determination due to disturbances. <P>SOLUTION: A prowler intrusion monitoring system accurately and automatically detects a prowler intrusion by detecting a door or window opening/closing movement with an acceleration sensor and filtering the acquired acceleration sensor data to remove a disturbance such as a vibration by wind pressure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a suspicious person intrusion monitoring system that is disposed on a door or window of a house and detects the intrusion of a suspicious person by detecting opening and closing by an acceleration sensor.

  In general, various suspicious person intrusion monitoring systems and devices for detecting suspicious persons entering a house or site and notifying the supervisor are proposed or sold. For example, Patent Document 1 discloses a technique for detecting a suspicious person by burying a monitoring device made of a metal plate with an acceleration sensor attached in the earth and sand (about 10 to 20 cm underground) serving as an intrusion monitoring area such as a site. ing. According to this technique, if there is something that moves above the metal plate, the elastic wave generated in the metal plate is detected by the acceleration sensor to notify the observer of the intrusion.

Patent Document 2 discloses a theft detector that detects the occurrence of theft by detecting the movement of an article that is not normally moved using a sensor that detects the movement. According to this technology, if it is attached to an article that is not normally moved, such as a painting or sculpture that is fixedly displayed on a wall or pedestal, data indicating abnormality is sent to the supervisor when movement is detected. Thus, the theft of goods can be monitored. In Patent Document 3, a human sensor, a heat sensor, a gas smoke sensor and an acceleration sensor are provided in the house to prevent disasters such as earthquakes and fires, and to detect crimes by detecting the presence of people. A system to implement is disclosed.
JP-A-6-251264 Japanese Patent Laid-Open No. 10-11191 Japanese Patent Laid-Open No. 11-31286

  In the monitoring apparatus and the disaster prevention system according to the above-described conventional technology and Patent Documents 1 to 3, it is used to detect an abnormality when vibration (elastic wave) is applied to the acceleration sensor. This abnormality is directly detected simply by detecting shaking or movement, and is indirectly determined to be a suspicious person's intrusion, a theft, or an earthquake. Therefore, if it is patent document 1, if an intrusion monitoring area is a site heading from the road to the entrance, the acceleration sensor may detect a shake when a large vehicle passes on the road, and there is an abnormality. It is considered that the suspicious person invaded.

  Therefore, when the acceleration sensor described in Patent Documents 1 to 3 is simply disposed on a window or door facing the outside of the house as a detection means in the crime prevention management system, the window is warped due to strong wind. However, it may be detected as abnormal.

  Therefore, the present invention has an object to provide a suspicious person intrusion monitoring system that uses an acceleration sensor for abnormality detection due to suspicious person intrusion from a door or a window and reduces erroneous determination due to disturbance for abnormality detection. To do.

  In order to achieve the above object, the present invention provides a sensor unit including an acceleration sensor that is attached to an object including a movable door or window in a house and detects an acceleration accompanying the movement of the object; It is connected to a sensor unit so as to be communicable, and an unnecessary low frequency region data signal is filtered out from the acceleration data measured by the acceleration sensor and transmitted from the sensor unit, and based on the filtered acceleration data. A suspicious person intrusion monitoring system including a center device for determining whether or not a suspicious person has entered is provided.

  In the present invention, the sensor unit includes a sensor drive control unit that controls the acceleration sensor, and a sensing signal transmission unit that transmits the acceleration data, and the center device transmits the acceleration data from the sensor unit. A receiving unit that receives acceleration data, a filter processing unit that removes unnecessary low-frequency signal components from the acceleration data received by the receiving unit, and an absolute value of acceleration data that has passed through the filter processing unit is predetermined. A suspicious person intrusion determination unit that determines that a suspicious person has entered when a determination value is exceeded, and a determination result notification unit that notifies the suspicious person when the suspicious person intrusion determination unit determines that an intrusion has occurred. Provide a suspicious person intrusion monitoring system.

  Further, according to the present invention, the sensor unit includes a sensor drive control unit that controls the acceleration sensor, a sensing signal transmission unit that transmits the acceleration data, and a sensor drive signal that receives a control signal transmitted from the center device. The center device is transmitted from the sensor unit, a sensor control unit that generates a control signal for controlling the sensor unit, a transmission unit that transmits the control signal to the sensor unit, and the sensor unit. A receiving unit that receives the acceleration data; a filter processing unit that removes unnecessary low-frequency signal components from the acceleration data received by the receiving unit; A suspicious person has entered the suspicious person intrusion determining unit that determines that a suspicious person has been intruded when a predetermined determination value is exceeded. When it is determined to provide a suspicious individual intrusion monitoring system comprising a judgment result notification section for notifying to that effect, the.

  According to the suspicious person intrusion monitoring system of the present invention, an acceleration sensor can be used for abnormality detection due to suspicious person intrusion from a door or a window, and misjudgment due to disturbance can be reduced for abnormality detection.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating a concept of a suspicious person intrusion monitoring system according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating a schematic configuration of the suspicious person intrusion monitoring system according to the present embodiment. FIG. 3 is a diagram illustrating an arrangement example of sensor units.

  In the present embodiment, the sensor unit 2 and at least one or more sensor units respectively disposed in doors and windows that are desired to be monitored for intrusion among doors and windows that can be opened and closed provided in a general house 1 A suspicious person intrusion monitoring system comprising an antenna 3 that receives an abnormality detection signal wirelessly transmitted from 2 and a center device 4 that performs collection processing (to be described later) using the received detection signal and notifies a supervisor of the suspicious person intrusion. It is.

  The sensor unit 2 is attached to a glass surface or a ridge of a window 5 as shown in FIG. 3 by a fixing means such as a double-sided tape. The sensor unit 2 has a configuration using an acceleration sensor as detection means. The configuration shown in FIG. 1 is an example of constructing a system indoors, and communication between each sensor unit 2 and the center device 4 is a wireless communication system, such as BT (Blue Tooth) (registered trademark), wireless LAN, or the like. A weak or low power system is used. In the present embodiment, the center device 4 is disposed in the house, and no radio signal is absorbed or shielded between the sensor unit 2 and the center device 4. Even if some trouble occurs, the problem can be avoided to some extent by selecting the frequency in the radio signal.

FIG. 2 shows a detailed configuration of the sensor unit 2 in the first embodiment.
The sensor unit 2 includes an antenna unit 11, a sensing signal transmission unit 12, a sensor drive control unit 13, a sensor body 14, and a battery 15. 4 shows a detailed configuration example of the sensor main body 14 and the sensor drive control unit 13 of the sensor unit 2 shown in FIG. 2, and FIG. 5 shows a configuration example of the sensing signal transmission unit 12 of the sensor unit 2 shown in FIG. Show.

  The sensor main body 14 includes an acceleration sensor 21 that can detect a movement of a door, a window, or the like (object) when the door is opened or closed as acceleration data (sensor acquisition signal).

  As shown in FIG. 4, the sensor drive control unit 13 includes an AD conversion unit 22, a central control unit 23, a clock signal generation unit 24, a server programming interface (SPI) 25, and a storage unit 26. I have.

  The AD conversion unit 22 converts an acceleration signal composed of an analog signal output from the acceleration sensor 21 into acceleration data digitized by analog / digital conversion, and sends the acceleration data to the central control unit 23. The clock signal generation unit 24 generates a clock signal having a predetermined period based on a frequency oscillated using a crystal oscillation element, for example, according to a predetermined clock control signal of the central control unit 23, and the clock signal is generated by the central control unit 23 is used as a reference for the operation timing. The storage unit 26 is configured by, for example, a rewritable memory such as RAM or EPROM, or a semiconductor memory such as a non-rewritable ROM, and stores programs and setting data executed by the central control unit 23.

  The central control unit 23 is configured by, for example, a central processing unit (CPU) and controls driving of each component in the acceleration sensor 21 and the sensor drive control unit 13. The central control unit 23 is preset with respect to the sensing start timing and sensing cycle, and the acceleration data from the acceleration sensor 21 is sensed based on the sensing cycle generated based on the clock control signal from the clock signal generating unit 24. Perform the action. In this embodiment, it is a configuration example in which a sensing cycle is set (fixed) in advance. However, from the role of monitoring the intrusion of a suspicious person, an interval of several seconds to ten and several seconds is appropriate, and the arithmetic processing function of the device is high. A period in which the sensing operation is performed substantially continuously may be used. As the acceleration sensor 21, for example, a triaxial piezoresistive acceleration sensor is used. This is because by using a triaxial acceleration sensor capable of detecting acceleration in the triaxial direction, a change in acceleration due to the force from any direction can be detected with high accuracy. The battery 15 is a small battery such as a button-type lithium battery, and supplies a DC voltage supplied from the battery 15 to the sensor body 14, the sensor drive control unit 13, and the sensing signal transmission unit 12 as drive power.

  Note that the acceleration sensor 21 enters an operation state in which sensing is performed when the standby signal becomes “H” level, and enters a non-operation state, that is, a standby state in which power consumption is low when the signal becomes “L” level. The standby state can be set, for example, by providing a switch or the like (not shown) in the sensor unit 2 so that the standby state is set when the house is in the house, and the sensing state is switched when the house is absent.

FIG. 5 illustrates a configuration example of the sensing signal transmission unit 12 illustrated in FIG.
This sensing signal transmission unit 12 includes an SPI 31, a digital signal control unit 32, a signal modulation unit 33, a mixing unit 34, a power amplification unit 35, a crystal oscillator 36, a phase stabilization circuit 37, a voltage control type. And an oscillator 38. The sensing signal transmission unit 12 takes in the sensing signal output from the sensor drive control unit 13 through the SPI 31 and inputs it to the digital signal control unit 32. Further, the signal modulation unit 33 performs digital modulation, for example, QPSK (Quadrature Phase Shift Keying) modulation, and the signal is converted into a predetermined format via the mixing unit 34. The converted acceleration data is amplified by the power amplification unit 35 and then transmitted from the antenna unit 11 to the antenna unit 3 of the center device 4 as a radio signal.

Next, FIG. 6 shows a configuration example of the center device 4 in the first embodiment.
The center device 4 includes a receiving unit 41, a sensor data collection processing unit 42, and a determination result notification unit 48. In such a configuration, the antenna unit 3 sequentially or simultaneously receives acceleration data (digitized sensing signals) from the plurality of sensor units 2 arranged at a plurality of locations in the house. The type of antenna is not particularly limited as long as it can be used in a house.

  The receiving unit 41 receives a radio signal from the sensor unit 2 received by the antenna unit 11. The input radio signal is demodulated and input to the sensor data collection processing unit 42 as acceleration data (sensing signal). The sensor data collection processing unit 42 includes an acceleration data identification unit 43, an acceleration data storage unit 44, a data averaging processing unit 45, a high-pass filter 46 as a filter processing unit, and a suspicious person intrusion determination unit 47. Composed.

  In this configuration, the acceleration data identification unit 43 transmits the acceleration data received from the plurality of sensor units 2 arranged in the house from which sensor unit 2 by the identification number given to the header at the head. To identify The identified acceleration data is temporarily stored in a table or storage area provided for each sensor unit in the acceleration data storage unit 44. For example, in the communication mode, if the acceleration data is received in a packet format, the data can be easily reconstructed by allocating the data for each sensor unit in a storage area such as a predetermined table in the acceleration data storage unit 44. To remember. This storage form corresponds as appropriate according to the communication format.

  The data averaging processing unit 45 averages acceleration data with respect to acceleration data appropriately read from the acceleration data storage unit 44 by a method such as moving average. This averaging process reduces the variation by averaging when the variation in acceleration data is large, but is not necessarily required when the variation in acceleration data is small.

  Further, the high-pass filter 46 generates acceleration data from which only the low frequency side is removed by not passing a data signal (pulse signal) of a predetermined frequency or lower. For example, when the sensor unit 2 is attached to the window 5 of the house as shown in FIG. 7A, wind or rain hits the window 5 as shown in FIG. 7B. The window glass is bent and deformed by the pressure (wind pressure or the like) generated at the time. Moreover, when wind pressure weakens, a window glass will return. By repeating this deformation, the window 5 is vibrated at a low frequency having a long period.

  By removing the frequency band including such a long-period vibration from the acceleration data, it is possible to extract only the acceleration data generated by the movement when the window is opened and closed. The setting of the characteristics of the high-pass filter 46 in this filter processing may be determined by simulation, or after mounting an acceleration sensor on an actual door or window, blowing a pseudo wind from a fan or the like and actually measuring it. May be determined.

  The suspicious person intrusion determining unit 47 determines that a suspicious person has intruded by opening / closing a door or a window based on the acceleration data passing through the high-pass filter 46. The determination includes not only always, but also a case where the door or window is closed. In this case, when the absolute value of the acceleration data from which the low-frequency component has been removed by the high-pass filter 46 exceeds this threshold value, it is determined that a suspicious person has entered by opening or closing the door or window.

  The determination result notification unit 48 includes a warning display unit 48a and an alarm generation unit 48b. When the suspicious person intrusion determination unit 47 outputs a suspicious person intrusion determination, the determination result notification unit 48 notifies the supervisor. As a notification method, it may be displayed on the screen of the warning display unit 48a that an intrusion has occurred, or an alarm may be issued from the alarm generation unit 48b. Of course, an alarm may be issued even at an intrusion location to threaten the intruder. The warning display unit 48a may use a display unit (not shown) provided for operation / setting in the center device.

With reference to the flowchart shown in FIG. 8, detection of suspicious person intrusion by the suspicious person intrusion monitoring system of the first embodiment will be described.
First, as described above, the sensor unit 2 is set in a sensing state, and acceleration data is transmitted at a preset sensing cycle. The center device 4 receives acceleration data transmitted from each sensor unit 2 wirelessly (step S1). Next, the acceleration data identification unit 43 identifies which sensor unit has transmitted the received acceleration data, and temporarily stores it in the corresponding table or storage area of the acceleration data storage unit 44 ( Step S2). The stored acceleration data is appropriately read out from the acceleration data storage unit 44, and the data averaging processing unit 45 performs data averaging processing by a method such as moving average (step S3). Thereafter, the low frequency component in the acceleration data subjected to the averaging process (including the absolute value process) is removed by a high pass filter (step S4).

  Next, the acceleration data from which the low-frequency component has been removed is compared with the previously set determination value (threshold value) (step S5). In this comparison, if the absolute value of the acceleration data exceeds the determination value (YES), it is determined that the door or window has been opened or closed, that is, a suspicious person has entered, and an alarm is issued (step S6). On the other hand, if the absolute value of the acceleration data is equal to or smaller than the determination value (NO), the process returns to step S1 and monitoring is continued.

  In the present embodiment, the example in which a wireless signal is used for communication between the sensor unit and the center apparatus has been described. However, the present invention is not limited to this, and a metal wiring (wired) may be laid and used. It may be optical communication using an optical fiber. Furthermore, in this embodiment, although the center apparatus was arrange | positioned in the house which has arrange | positioned the sensor unit, it is not limited also about this. Even if it is away from the house or the place where the sensor unit is disposed, it can be easily implemented. For example, the location of the center device may be a neighboring house or a remote house, and is not particularly limited as long as direct communication using a telephone line or network communication using the Internet can be performed. It is not something.

  Further, the center device that receives the transmission of the sensor unit is not limited to one, and can be transmitted to the security department and the security company at the same time and in a wide range by various communication methods. For example, as shown in FIG. 9, the sensor unit 2 and the center device 4 are arranged in the same house 1, and an external detection device (host computer) 50 that communicates with the center device 4 through a telephone line or a network is managed by a management company, for example, Place in a security company. This external detection device may have a function of setting a sensing cycle similarly to the center device.

  With this configuration, it is possible to monitor from a plurality of locations simultaneously. When the control authority equivalent to that of the center device 4 is assigned to each external detection device and arranged, the confusion caused by a plurality of instructions can be prevented by determining the priority order of the operation setting. Furthermore, the acceleration sensor is not limited to a triaxial sensor, and even a biaxial sensor or a uniaxial sensor can be used in the same manner by considering the arrangement direction.

  The acceleration sensor 21 receives the standby signals (enable signals) H and L from the central control unit 23 to reduce the power consumption during the time when the sensing operation is not performed, and changes between the operation state and the non-operation state. When the standby signal becomes “H” level, the driving is controlled. When the standby signal becomes “L” level, the sensing operation is performed.

  As described above, according to the suspicious person intrusion monitoring system of the first embodiment, when the opening / closing operation of the door or window is detected by the acceleration sensor, the obtained acceleration sensor data is filtered. Thus, it is possible to correctly and automatically detect the intrusion of a suspicious person by removing disturbances composed of low frequency components such as vibration caused by wind pressure.

Next, a second embodiment of the present invention will be described with reference to FIGS.
The suspicious person intrusion monitoring system according to the first embodiment described above is a configuration example in which a sensing cycle is set (fixed) in advance, but the suspicious person intrusion monitoring system according to the second embodiment can perform two-way communication. Thus, it is possible to adjust the sensing period, the driving timing of the sensor unit, the transmission timing of acceleration data, and the like. 10 to 12 that are the same as those shown in FIGS. 2 to 5 described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  A sensor unit 61 shown in FIG. 10 has a configuration in which a sensor drive signal reception unit 62 and a transmission / reception signal distribution unit 63 are added to the configuration of the sensor unit 2 shown in FIG. FIG. 11 shows a configuration example of the sensing signal transmitter 12 and the sensor drive signal receiver 62 of the sensor unit 61 shown in FIG. FIG. 12 shows a configuration example of the center device.

  10 includes an antenna unit 11, a transmission / reception signal distribution unit 63, a sensor drive signal reception unit 62, a sensing signal transmission unit 12, a sensor drive control unit 13, a sensor body 14, and a battery 15. It consists of. The sensor drive signal receiving unit 62 receives a control signal including a command related to a sensing cycle from a sensor control unit 83 of the center device 80 described later in FIG. 12, and suggests a change in the sensing cycle.

  As shown in FIG. 11, the sensor drive signal receiving unit 62 includes a low noise amplifying unit 64, a voltage controlled oscillator 65, a mixing unit 66, a phase stabilizing circuit 67, a crystal oscillator 68, a signal demodulating unit 69, and the like. The digital signal control unit 70 and the SPI 71 are included. Except for this component, the configuration is the same as that shown in FIG.

  The sensor drive signal receiving unit 62 of the sensor unit 61 receives the radio signal transmitted from the center device 80 by the antenna unit 11, distributes it by the transmission / reception signal distribution unit 63, and mixes the mixing unit 66 via the low noise amplification unit 64. Is taken in. Here, the radio signal is converted into a predetermined frequency mixed with the output of the voltage controlled oscillator 65, and then digital demodulated by the signal demodulator 69. A control signal obtained by this digital demodulation is supplied from the digital signal control unit 70 to the sensor drive control unit 13 via the SPI 71.

  FIG. 12 shows a configuration example of the center apparatus corresponding to the operation of the sensor unit 61 configured as described above. In the center device 80, the same components as those of the center device 4 shown in FIG. 6 in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

The center device 80 includes a transmission / reception signal distribution unit 81, a reception unit 41, a sensor data collection processing unit 42, a transmission unit 82, and a sensor control unit 83. That is, in this embodiment, a transmission / reception signal distribution unit 81 including a circulator is provided between the antenna unit 3 and the reception unit 41, and the transmission / reception signal distribution unit 81 further includes a control signal from the sensor control unit 83. Is connected to a transmission unit 82 for transmitting. Moreover, the determination result notification part 48 (warning display part 48a, alarm generation part 48b) is provided, and an intrusion warning display and a warning are emitted and a suspicious person's invasion is notified.

  The antenna unit 3 has a transmission antenna function for transmitting a control signal from the sensor control unit 83 and a reception antenna function for receiving a sensor acquisition signal (sensing signal) from the sensor unit 61. This is performed by the signal distributor 81. The receiving unit 41 receives and demodulates the sensor acquisition signal (sensing signal) distributed by the transmission / reception signal distribution unit 61 by wireless communication from the captured sensor unit 61. The demodulated sensing signal is output to the sensor data collection processing unit 42. In addition, the transmission unit 82 modulates the control signal output from the sensor control unit 63 and then converts it into a radio signal. The wireless signal is transmitted from the antenna unit 3 toward the sensor unit 61 via the transmission / reception signal distribution unit 81.

  Furthermore, the sensor control unit 83 is configured to include, for example, a CPU (Central Processing Unit) and a DSP (Digital Signal Processor), and outputs a control signal including commands related to sensing start and sensing cycle in the sensor unit 61. In the present embodiment, as in the first embodiment described above, wireless communication is used in the same house as the communication means between the sensor unit and the center apparatus. However, the present invention is not limited to this. Or optical communication. On the other hand, the sensor unit and the center device are not arranged in the same house, but are arranged at remote locations, using a communication network, for example, a short-range data communication system such as BT, or a wireless LAN (Local Area). Network), PHS (Personal Handyphone System) (registered trademark), mobile phone system, etc. can be easily applied.

  In the second embodiment, it is possible not only to change the sensing cycle, but also to remotely start or stop each sensor unit by using a bidirectional communication function. By operating the center device by the center device manager, the sensor unit can be set to a non-operating state to prevent erroneous detection at home. In the absence, all the sensor units can be set to the operating state by operating the center device. Furthermore, the operation state and non-operation state of each sensor unit may be set according to the set time using a timer. Furthermore, as in the first embodiment described above, an external detection device (host computer) 50 that is communicably connected to the center device 80 through a telephone line or a network may be provided.

  As described above, according to the second embodiment, in addition to the operation and effect of the first embodiment described above, two-way communication is possible, and the sensing cycle can be variably set from the center device side. . Thereby, it can adjust so that an optimal sensing signal may be suitably obtained as needed. Also in the present embodiment, the acceleration sensor is not limited to the three-axis sensor, and even a two-axis sensor or a one-axis sensor can be similarly used by considering the arrangement direction.

It is a figure which shows the concept of the suspicious person intrusion monitoring system of 1st Embodiment which concerns on this invention. It is a figure which shows schematic structure of the suspicious person intrusion monitoring system of 1st Embodiment. It is a figure which shows the example of arrangement | positioning of the sensor unit attached to a window. It is a figure which shows the structural example of the sensor and sensor drive control part in the sensor unit shown in FIG. It is a figure which shows the structural example of the sensing signal transmission part of the sensor unit shown in FIG. It is a figure which shows the structural example of the center apparatus in 1st Embodiment. It is a figure for demonstrating the vibration of the window by the wind pressure of the wind which sprayed. It is a flowchart for demonstrating the monitoring state of the suspicious person intrusion monitoring system in 1st Embodiment. It is a figure which shows the modification of 1st Embodiment. It is a figure which shows the structural example of the sensor unit in 2nd Embodiment. It is a figure which shows the structural example of the sensing signal transmission part of the sensor unit shown in FIG. 10, and a sensor drive signal receiving part. It is a figure which shows the structural example of the center apparatus in 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... House, 2 ... Sensor unit, 3, 11 ... Antenna part, 4 ... Center apparatus, 5 ... Window, 12 ... Sensing signal transmission part, 13 ... Sensor drive control part, 14 ... Sensor main body, 15 ... Battery, 21 ... Acceleration sensor, 22 ... AD conversion unit, 23 ... Central control unit, 24 ... Clock signal generation unit, 25, 31 ... Server programming interface (SPI), 26 ... Storage unit, 32 ... Digital signal control unit, 33 ... Signal Modulation unit 34 ... mixing unit 35 ... power amplification unit 36 ... transmission signal distribution unit 41 ... reception unit 42 ... sensor data collection processing unit 43 ... acceleration data identification unit 44 ... acceleration data storage unit 45 ... Data averaging processing unit, 46 ... high-pass filter, 47 ... suspicious person intrusion determination unit, 48 ... determination result notification unit.

Claims (3)

A sensor unit that is attached to an object consisting of a movable door or window in a house and includes an acceleration sensor that detects acceleration accompanying the movement of the object;
It is connected to the sensor unit in a communicable manner, and the acceleration data measured by the acceleration sensor and transmitted from the sensor unit is filtered to remove unnecessary low-frequency region data signals, and the filtered acceleration data is converted into the filtered acceleration data. Based on the center device for determining the presence or absence of suspicious person intrusion,
A suspicious person intrusion monitoring system comprising: The sensor unit includes a sensor drive control unit that controls the acceleration sensor, and a sensing signal transmission unit that transmits the acceleration data.
The center device includes a receiving unit that receives the acceleration data transmitted from the sensor unit, a filter processing unit that removes unnecessary low-frequency signal components from the acceleration data received by the receiving unit, and the filter processing A suspicious person intrusion determination unit that determines that a suspicious person has entered when the absolute value of acceleration data that has passed through a part exceeds a predetermined determination value, and the suspicious person intrusion determination unit determines that a suspicious person has intruded The suspicious person intrusion monitoring system according to claim 1, further comprising: a determination result notification unit that notifies that effect. The sensor unit includes a sensor drive control unit that controls the acceleration sensor, a sensing signal transmission unit that transmits the acceleration data, and a sensor drive signal reception unit that receives a control signal transmitted from the center device. ,
The center device receives a sensor control unit that generates a control signal for controlling the sensor unit, a transmission unit that transmits the control signal to the sensor unit, and the acceleration data transmitted from the sensor unit. A receiving unit, a filter processing unit that removes unnecessary low-frequency signal components from the acceleration data received by the receiving unit, and an absolute value of acceleration data that has passed through the filter processing unit exceeds a predetermined determination value A suspicious person intrusion determining unit that sometimes determines that a suspicious person has intruded, and a determination result notifying unit for notifying that when the suspicious person intrusion determining unit determines that a suspicious person has invaded. The suspicious person intrusion monitoring system according to claim 1.

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