JP3174605U - Security equipment - Google Patents

Abstract

It is an object of the present invention to provide a security device that judges the movement of a suspicious person and the movement of a person other than the suspicious person and suppresses the occurrence of false reports and malfunctions.
A security device includes a plurality of motion detection sensors that transmit a sensor signal and a motion detection sensor that is connected to the motion detection sensor and that first transmits the sensor signal. The signal receiving circuit 18, the detection order recognition circuit 19 for recognizing the detection order of the plurality of motion detection sensors 5 in time series, the detection time measuring circuit 20 for measuring the detection time of the motion detection sensor 5, and the detection order, etc. A device main body 13 having a suspicious person determination circuit 21 for determining whether or not it is due to a suspicious person's movement, and a suspicious person's movement when connected to the apparatus main body 13 and determined by the suspicious person's determination circuit 21 A notification unit 14 that notifies the presence of the person.
[Selection] Figure 2

Description

  The present invention relates to a security device, and more particularly to a security device that detects the movement of a suspicious person who has entered a site and notifies a householder or the like of the movement.

  For some time, security systems have been developed that detect the presence of suspicious individuals who have entered the premises around buildings such as ordinary houses and buildings, and notify the security companies that have contracted in advance. ing. In addition, there is a system in which a plurality of security cameras are installed on the premises, and the presence and movement of a suspicious person are recognized from an image of the security camera. In recent years, a so-called “security light (or sensor light)” that detects the movement of a human or the like using an infrared sensor and emits a light connected to the infrared sensor is installed around a general house. An increasing number of households are taking crime prevention measures. This security light can detect a person who has illegally entered the building grounds at night, and can illuminate the person brightly by emitting light, exposing his presence and actions to the surroundings. Can provoke psychological anxiety of a suspicious person who hates. As a result, it is possible to obtain a certain effect of giving up the intrusion into the site of the house where the security light is installed and preventing criminal acts such as theft and peeping.

  However, the security measures using the security system and security light described above may cause the following problems. That is, a security system contracted with a security company or a system using a security camera monitors a building or a house contracted for 24 hours and manages the system, and costs for security measures are often high. Yes, it was mainly targeted at companies and shops, and was not widely spread to ordinary households. The sensors used in these systems and security lights are mainly infrared sensors, which detect some movement within the irradiation range based on the change in reflectance of the irradiated infrared rays and send out as sensor signals. The movements of humans who entered the premises for legitimate purposes such as newspaper deliverers and courier companies, the movements of small animals such as dogs and cats other than humans, or the movement of trees struck by strong winds, etc. Even so, the infrared sensor may react. For this reason, security companies or the like have to dispatch security guards for these confirmations, or directly or indirectly confirm the situation with installed security cameras.

  On the other hand, in the case of a security light, an infrared sensor and a light are electrically connected to each other, and the light is uniquely emitted according to the movement detected by the infrared sensor. For this reason, as in the above system, the light may be emitted even by movements other than suspicious individuals such as small animal movements, etc., and the light may be emitted due to a false detection of the sensor, causing a resident or a nearby resident to sleep at midnight. There was a case. Further, when such a situation frequently occurs, the installation of the security light itself may be canceled. In addition, security lights are often set only after the evening when the surroundings are dark, and even when they are activated, the effects of light emission are low during the day, which may not provide sufficient security measures. It was.

  Therefore, in view of the above circumstances, the security device of the present invention is to provide a security device characterized by determining the movement of a suspicious person and other movements and suppressing the occurrence of false alarms and malfunctions. To do.

  The security device according to the present invention includes a plurality of motion detection sensors that are installed around a building and that detect a motion of an object to be detected and send out a sensor signal; A signal receiving circuit that identifies the sent motion detection sensor and receives the sensor signal, and the detection order of the plurality of motion detection sensors that sent the sensor signals according to the motion of the detection target in chronological order A detection order recognition circuit that recognizes the detection object, a detection time measurement circuit that measures a detection time from the detection to the end of the movement of the detection object for each of the motion detection sensors, and the sensor signal that is sent first Based on at least one of the motion detection sensor, the recognized detection order, and the detection time, the movement of the detection target enters the site of the building. A suspicious person when a suspicious person's movement is determined by the suspicious person's determination circuit connected to the apparatus body and the suspicious person's determination circuit. A suspicious person determination circuit that detects the movement of the detection target first and sends the sensor signal to determine based on an installation position of the motion detection sensor A position determination circuit, an action order determination circuit for determining whether the recognized detection order matches a predetermined visitor action order, and the measured detection time for each of the motion detections. And a specified time determination circuit for determining whether a predetermined time specified in advance for the sensor has been exceeded.

  Here, the motion detection sensor is a “human sensor” that detects the presence or movement of a person using light or sound waves of a specific wavelength such as infrared rays, ultrasonic waves, or visible light, and the security light described above. It is a well-known one that is often used in automatic faucet systems in toilets. Note that an infrared sensor is mainly used for general households, and it is particularly preferable in the present invention to use an infrared sensor from the viewpoint of cost, installation method, detection performance, and the like. A plurality of motion detection sensors are installed along the perimeter of the building, and a part of the detection area of the adjacent motion detection sensor is detected so that it is possible to detect the movement of a suspicious person who has entered the site. It is preferable that the blind spots of the motion detection sensors are not formed in the site by overlapping each other. Here, the movement of the object to be detected is the movement of the suspicious person described above, the movement of a person other than the suspicious person who enters the site with a legitimate purpose, the movement of a small animal such as a dog, or the shaking of a tree. It includes the movement of objects such as. These movements are detected according to a change in reflectance such as infrared rays.

  On the other hand, the device body receives sensor signals sent from a plurality of motion detection sensors, and analyzes the sensor signals to determine whether the motion of the detection target is due to the suspicious person's motion. It functions as a control device having various circuits. Furthermore, when the movement of the object to be detected is determined by the movement of the suspicious person by the main body of the device, the notification unit is for residents (households) who live inside the building or people around the building. The presence of a suspicious person is notified by voice, light, or the like. That is, when an alarm sound or the like is notified by voice, a speaker connected to the apparatus body corresponds to the notification unit. On the other hand, when the alarm is notified by light as in the case of the security light, the light corresponds to the notification unit. . Or when reporting to the security company contracted like the conventional security system, the notification apparatus which alert | reports a notification signal using the line | wire connected with the security company corresponds. Furthermore, the notification unit may be a combination of the above speaker, light, notification device, and the like.

  Therefore, according to the security device of the present invention, the motion of the detection target in the site is detected by the plurality of motion detection sensors installed around the building, and is sent to the device main body as a sensor signal. In the suspicious person determination circuit, a process by a sensor position determination circuit that first determines whether or not the movement of the detection target is a suspicious person's movement based on the movement detection sensor that first detects the movement of the detection target and sends a sensor signal is performed. In other words, visitors (such as courier companies) who visit the building generally invade the site from the vicinity of the gate / entrance or from the back / side doors, and multiple motion detectors are installed around the building. When the movement detection sensor near the entrance or the back door detects the movement of the detection object first from the sensors, there is a high possibility that the person is a normal visitor. Therefore, in such a case, the sensor position determination circuit determines that the movement is not a suspicious person. On the other hand, when the movement of the object to be detected is first detected by a motion detection sensor other than that installed near the entrance or near the back door, for example, when entering a hedge or wall that separates the site, etc. Therefore, it is determined that there is a high possibility that it is due to the movement of the suspicious person, and the movement as a movement by the suspicious person is notified. Note that the notification based on the determination of the movement of the suspicious person may be performed as a suspicious person based on a majority decision or the like based on the determination result by the action order determination circuit and the specified time determination circuit described later. You may determine as a suspicious person based on the determination result by one determination circuit. Here, a motion detection sensor that does not determine the motion of the suspicious person even when the motion of the detection target is detected first, such as in the vicinity of the entrance and the back door, is determined in advance.

  Further, the action order determination circuit compares the action order that a normal visitor should take with the detection orders of a plurality of motion detection sensors recognized in time series along the movement of the detection target object, and matches them. In the case where it is determined to deviate from the normal visitor's behavior, it is considered to be due to the movement of the suspicious person. Here, when a normal visitor enters a site from a gate or entrance, it generally moves straight to the front door. It is preferable that the detection order of the motion detection camera along the action order is stored in advance in a part of the apparatus main body. In this case, the action order determination circuit does not determine the movement of the suspicious person. On the other hand, even when entering the site from the entrance, it does not move straight to the front of the entrance door, for example, moving toward the garden in the site If recognized by the detection order of the sensors, it is not a normal visitor's movement, so it is determined as a suspicious person and the movement is notified.

  The specified time determination circuit determines the movement of the suspicious person when the time detected by one motion detection sensor exceeds a specified time defined in advance. In general, do not stay in one place on the site and ask the state of the building, and do actions that hide behind walls and walls to avoid gaze from the surroundings. There is no. Therefore, it becomes possible to determine a suspicious person by measuring a detection time during which detection by the motion detection sensor continues for a movement that stays in one place for a long time. In addition, the specified time can be set for each motion detection sensor, and even a normal visitor is near the entrance where it is expected to stay for a relatively long time in order to confirm the home stay The relatively long prescribed time may be set, and a short prescribed time may be set for a portion such as a garden where a long stay does not normally occur. However, when it is a blind spot from the surroundings and the door is to be unlocked, detection by the motion detection sensor continues for a longer time than during a normal visit, so it is determined as a suspicious person's movement by the specified time determination circuit. Will be.

  Furthermore, the security device of the present invention has the above-mentioned configuration, “The building further includes a door chime installed at the entrance, and the device main body is connected to the door chime, and the door chime is called up. A chime signal receiving circuit for receiving a chime signal sent in response to the chime signal, and when the chime signal is received, at least one of the sensor position determination circuit, the action order determination circuit, and the specified time determination circuit is the detection Even if it is determined that the movement of the object is due to the movement of the suspicious person, a chime signal determination circuit that determines that the movement of the object is a movement other than the suspicious person may be included.

  Therefore, according to the security device of the present invention, when a call operation of a door chime installed at the entrance of a building is recognized and the door chime is pressed and a chime signal is received, it is determined that the movement is other than a suspicious person. Processing is performed. That is, a suspicious person who tries to intrude into a building rarely calls a door chime. Therefore, when such an operation is performed, the movement by the suspicious person is a movement by a normal visitor. The process is canceled and the notification is not performed.

  Furthermore, the security device of the present invention has the above-described configuration, “The building is further installed on a door of the building and further includes a door open / close sensor for detecting an open / closed state of the door, A door open signal receiving circuit that is connected to a door open / close sensor and receives a door open signal sent from the door open / close sensor, and that receives the door open signal; Even if both the order determination circuit and the specified time determination circuit determine that the movement of the detection object is caused by movements other than the suspicious person, the door opening signal is determined to be the movement of the suspicious person. And a determination circuit ”.

  Therefore, according to the security device of the present invention, the door opening / closing sensor installed on the entrance door of the building can be recognized, and the opening / closing state of the door can be recognized. The door opening / closing sensor indicates the door opening state. When the status is received, it is determined that a suspicious person has entered, and even if the movement is determined as a movement other than the suspicious person by the suspicious person determination circuit, a process of notifying the presence of the suspicious person is performed.

  According to the security device of the present invention, it is possible to accurately determine movements of suspicious persons and those other than suspicious persons by using a plurality of motion detection sensors, and suppress the occurrence of false alarms and malfunctions.

It is explanatory drawing which shows typically the example of installation of the security apparatus of this embodiment. It is a block diagram which shows schematic structure of a security apparatus and an apparatus main body. It is a flowchart which shows an example of a suspicious person's motion detection using a security apparatus. It is a flowchart which shows an example of a suspicious person's motion detection using a security apparatus.

  Next, a security device 1 according to an embodiment of the present invention will be described with reference to FIGS. Here, as shown in FIG. 1 and the like, the security device 1 according to the present embodiment is installed in a house 4 that is built inside a site 3 that is separated from the surroundings by a fence 2. The movement of the suspicious person who enters the room is detected and notified to the occupants of the house 4. FIG. 1 is a simplified illustration of the arrangement of the plurality of motion detection sensors 5 installed around the house 4. The house 4 and the site 3 are shown as a schematic view viewed from above. More specifically, a front door 7 having a front door 6 is provided on the front side of the house 4 (lower side of the paper in FIG. 1), while the rear side of the house 4 (upper side of the paper in FIG. 1). A service port 9 having a back door 8 is provided. Furthermore, a front gate 10 and a back gate 11 connected to the fence 2 are provided in the vicinity of the entrance 7 and the entrance 9. Thereby, the housekeeper etc. can go in and out of the house 4 through the front gate 10 from the entrance door 6 or through the back gate 11 from the back door 8. Here, the house 4 corresponds to the building in the present invention.

  As shown in FIGS. 1 to 4, the security device 1 of the present invention is installed around a house 4, detects the movement of an object to be detected including a suspicious person, etc., by infrared reflectance, and sends a sensor signal 12. A plurality of motion detection sensors 5 (indicated by ● in FIG. 1) and the sensor signal 12 sent from the motion detection sensor 5 are analyzed to determine whether the detected movement of the detection object is caused by a suspicious person. Installed in the vicinity of the entrance 7 of the house 4 connected to the apparatus main body 13 and the apparatus main body 13 to be processed and connected to the apparatus main body 13 to notify the presence of a suspicious person to a householder or a nearby neighbor. Door chime 15 and door opening / closing sensors 16a and 16b (indicated by ◎ in FIG. 1) that are connected to the apparatus main body 13 and that are installed on the front door 6 and the back door 8 of the house 4 respectively. Mainly equipped It is configured Te. The apparatus body 13 and the notification unit 14 are installed inside the entrance 7. Further, the cables connecting the door chimes 15 and the apparatus main body 13 such as the sensors 5 are not shown in FIG.

  More specifically, the motion detection sensor 5 can be an infrared sensor used for a security light or the like. By installing a plurality of sensors around the house 4, the entire site 3 is set as an infrared irradiation area. ing. That is, it is set so that there is no blind spot so as not to leak the movement of the detection object in the site 3. Here, in the case of the security device 1 according to the present embodiment, a total of eight motion detection sensors 5 are installed around the house 4, and the respective infrared irradiation areas (sensor detection areas) of the motion detection sensors 5 adjacent to each other. It is installed so that a part overlaps. In addition, the motion detection sensor 5 installed near the entrance 7 has an infrared irradiation area adjusted so that the movement of the front gate 10 and the site 3 in the vicinity of the entrance 7 can be particularly detected. The movement detection sensor 5 has the irradiation area adjusted so that the movement of the site 3 in the vicinity of the back gate 11 and the entrance 9 can be particularly detected.

  On the other hand, the apparatus main body 13 is electrically connected to a plurality of installed motion detection sensors 5 via respective sensor cables (not shown), and sent from the motion detection sensor 5 in accordance with a change in infrared reflectance. The signal 12 can be received. Here, the apparatus main body 13 has a housing-like appearance, and the inside is mainly constituted by an electric circuit such as a CPU. That is, the signal reception circuit 18 for receiving the sensor signal 12 sent from each motion detection sensor 5 and taking it into the apparatus main body 13, and the sensor signal 12 according to the movement of the detection object moving on the site 3, respectively. A detection order recognition circuit 19 for recognizing the detection order of the plurality of motion detection sensors 5 sent out in time series, and detection of the movement of the detection target that has entered the infrared irradiation area are started and detected outside the irradiation area. A detection time measuring circuit 20 that measures the time (detection time) between the movement of the object and the end of detection for each motion detection sensor; the motion detection sensor 5 that first sent the sensor signal 12; And a suspicious person determination circuit 21 for determining whether the movement of the detection object detected in the site 3 from at least one of the detection times is caused by a suspicious person. That. Here, the apparatus main body 13 can be applied to a commercially available personal computer, and is composed of a hardware device such as a signal interface that receives the transmitted sensor signal 12 and a CPU that performs control processing based on the sensor signal 12. Yes.

  Further, the suspicious person determination circuit 21 will be described in detail. A sensor position determination circuit 22 that determines whether or not the installation position of the motion detection sensor 5 that first detects the movement of the detection object is an installation position assumed in advance. A behavior order determination circuit 23 that determines whether or not the recognized detection order matches a behavior order of a visitor that is defined in advance, and a specified time that is measured in advance for the motion detection sensor 5 And a specified time determination circuit 24 for determining whether or not the time is exceeded. In order to perform each of these determination circuits 22 and the like, the apparatus main body 13 stores in advance installation position information 32 related to the installation position of the motion detection sensor 5 that is highly likely to detect the movement of the detection target first. The memory circuit 25 stores the action order information 33 related to the action order of the general site 3 of the visitor visiting the house 4, and further stores the specified time information 34 related to the specified time for each motion detection sensor 5. Is provided.

  Further, when the apparatus main body 13 is connected to the door chime 15 of the entrance 7 and receives the chime signal receiving circuit 27 for receiving the chime signal 26 sent in response to the calling operation of the door chime 15, and the chime signal 26, A chime signal determination circuit 28 that determines that the movement of the detection object determined by the suspicious person determination circuit 21 as the movement of the suspicious person based on the sensor position, action order, and detection time is something other than the suspicious person, and the front door 6 and the back Door open signal receiving circuit 30 connected to door open / close sensors 16a and 16b installed on the door 8 and receiving a door open signal 29 indicating a door open state, and a suspicious person determination circuit 21 other than a suspicious person from the sensor position, etc. And a door opening signal determination circuit 31 that determines that the movement of the detected object determined to be the movement of the suspicious person is due to the movement of the suspicious person.

  In addition, the notification unit 14 is electrically connected to the apparatus main body 13 and the suspicious person determination circuit 21 or the door open signal determination circuit 31 determines that the movement of the detection target is due to the movement of the suspicious person. In addition, the presence of a suspicious person is notified to a resident who lives in the house 4, a neighboring resident, or a pre-signed security company. For example, a light is used to irradiate the site 3 and suspicious from the surroundings. It is assumed that the person's presence is raised, the speaker is used to output sound, and the alarm signal is sent to the security company. Furthermore, when outputting sound using a speaker, it is also possible to change the output content in stages, for example, when judged based on any one of sensor position, detection order, and detection time Includes a pre-stored dog's cry or a family member's voice, etc., prompting the suspicious person to give up intrusion to the site 3, or if the suspicious person is determined to be suspicious by two or more circuits, You may make it perform notification to a security company, etc., when it is judged to be a suspicious person by notification to a neighboring inhabitant and all the circuits. Thereby, even if it is a case where a motion of a suspicious person is detected, an intrusion of a suspicious person can be prevented beforehand, without disturbing a neighboring inhabitant at midnight.

  Next, a processing flow of the apparatus main body 13 in an example n of detection and determination of a suspicious person's movement using the security apparatus 1 of the present embodiment will be described mainly based on the flowcharts of FIGS. 3 and 4. Here, the security device 1 of the present embodiment is installed in the house 4 shown in FIG. 1, and the resident is out of the daytime and is unattended. Judgment. First, the security device 1 is activated and put into operation (step S1). The start-up of the security device 1 can be set by operating the device main body 13 when a householder goes out. In order not to detect the movement by the movement detection sensor 5 until the housekeeper moves from the house 4 to the outside of the site 3, the apparatus waits for infrared irradiation in step S2 to be described later for about 1 minute after setting. Also good. Note that steps S3 and S4 in the flowcharts of FIGS. 3 and 4 illustrate processing by the motion detection sensor 5.

  With the operation of the security device 1, infrared irradiation is started to each irradiation area from the plurality of motion detection sensors 5 installed around the house 4 (step S2). Here, when there is no movement of a detection target such as a person, a small animal, or an object in the site 3, the infrared reflectance is constant.

  Therefore, a change in the reflectance of infrared rays irradiated by the motion detection sensor 5 is detected (step S3). If there is a change in the reflectance of infrared rays (YES in step S3), it is assumed that some movement has been detected in the site 3, and the motion detection sensor 5 that has detected the change in the reflectance is applied to the apparatus main body 13. A sensor signal 12 to that effect is sent (step S4). On the other hand, if no change in reflectance is detected (NO in step S3), the process in step S3 is continued until there is a change in reflectance (until there is a movement of the detection target).

  When the sensor signal 12 is sent from the motion detection sensor 5, the apparatus main body 13 receives this by the signal receiving circuit 18 (step S5). Here, the motion detection sensor 5 sends out a sensor signal 12 every time a change in reflectance is detected so as to follow the motion of the detection target, and the processing from step S2 to step S4 is a motion. Even after the sensor signal 12 is sent from the detection sensor 5, the operation is continued.

  The signal receiving circuit 18 specifies the installation position of the motion detection sensor 5 that has transmitted the sensor signal 12, recognizes the detection order, and specifies the detection time (steps S6a, S6b, S6c), and based on the installation position, the suspicious person It is determined whether or not it is due to the movement of (step S7). That is, it is determined whether or not the specified installation position is the same as the installation position of the motion detection sensor 5 at which a normal visitor is first detected. Here, in the case of the house 4 in which the security device 1 of the present embodiment is installed, as shown in FIG. 1, a normal visitor (for example, including a courier, a mail delivery person, a newspaper delivery person, etc.) Walk through the front gate 10 or the back gate 11 into the site 3 partitioned by 2 to the vicinity of the entrance 7 or the entrance gate 9. In other words, the motion detection sensor 5 that first detects motion is very likely to be either the front gate 10 or the back gate 11. Therefore, the storage circuit 25 of the apparatus main body 13 stores in advance the installation position information 32 related to the installation position of the motion detection sensor 5 with the front gate 10 and the back gate 11 as the infrared irradiation region, and the movement is first detected and the sensor signal 12 is detected. Is sent and the processing for comparison with the installation position of the motion detection sensor 5 specified by the signal receiving circuit 18 is performed. When the installation position of the motion detection sensor 5 that first detected the movement matches the stored installation position information 32 (YES in step S7), the detected movement is possible due to the movement of a normal visitor (such as a courier). It is temporarily determined that the property is high (step S8). On the other hand, when motion is first detected in an infrared irradiation area other than the front gate 10 or the back gate 11 (NO in step S7), that is, a position that is not assumed by a normal visitor (for example, in front of a bathroom or a Japanese-style room in FIG. 1). ) Is detected by the motion detection sensor 5, it is highly likely that the vehicle has climbed over the fence 2 and entered the site 3, and the possibility of movement by a suspicious person is high (step S <b> 9). In the case of the security device 1 according to the present embodiment, based on a plurality of determination results, it is determined whether or not the movement of the detection target object is based on the determination result in step S7 in order to determine whether or not the movement is a suspicious person. It does not immediately determine whether or not it is due to the movement of a suspicious person.

  Next, the order of detection of the plurality of motion detection sensors 5 that have detected the movement of the detection target is recognized in chronological order, and the action order information 33 related to the normal visitor action order stored in advance in the storage circuit 25; It is determined whether or not they match (step S10). Here, in the case of a normal visitor (a courier or the like) who visits the house 4, for example, it is general to take an action sequence of moving straight through the front gate 10 to the entrance 7 in front. Alternatively, an action sequence may be taken as it passes through the back gate 11 and reaches the vicinity of the back door 8 of the door 9 (see the arrow in FIG. 1). That is, when the detection order recognized by the plurality of motion detection cameras 5 matches the action order stored in advance in the storage circuit 25 (YES in step S10), there is no suspicious movement, so the site by a normal visitor 3 is determined to have a high possibility of intrusion (step S11). On the other hand, even if it has entered the site 3 through the front gate 10 or the back gate 11 and it is determined in step S7 that the possibility of movement by a normal visitor is high, the action order information 33 stored in advance is stored. If the action order is not followed (NO in step S10), that is, if the person suddenly moves from the front gate 10 to the toilet or bathroom site 3 in FIG. It is determined that there is a high possibility that the movement is caused by a suspicious person other than the person (step S12). Therefore, by referring to the detection order of the motion detection sensor 5 as the action order, it is possible to detect a motion that is likely to be a suspicious person.

  Furthermore, each detection time by the motion detection sensor 5 is measured, and whether or not the measurement time exceeds a specified time based on the specified time information 34 stored in advance for each motion detection sensor 5 in the storage circuit 25. Determination is made (step S13). Here, in the case of a normal visitor, it often reaches the vicinity of the entrance 7 from the front gate 10, stays at that position, and waits for a housekeeper to come to the reception. For this reason, there is a tendency that the detection time in which the motion is detected by the motion detection sensor 5 in which the vicinity of the entrance 7 is an infrared irradiation region or the motion detection sensor 5 in which the vicinity of the entrance 9 is an irradiation region is long. On the other hand, it is expected that the garden tip and the position that is not so public are not likely to stay for a long time. Therefore, the determination is made based on the detection time defined for each motion detection sensor 5 (for example, the vicinity of the entrance 7 and the entrance 9 is within 2 minutes, and the other positions are within 1 minute). If it is short (YES in step S13), it is determined that there is a high possibility of movement by a normal visitor (step S14). On the other hand, when the detection time is longer than the specified time (NO in step S13), it is determined that the possibility of movement by a suspicious person other than a normal visitor is high (step S15). In addition, the determination result (not shown) is memorize | stored in the memory | storage circuit 25, respectively about the result made into the movement other than a suspicious person or a suspicious person by each determination process.

  Thereafter, it is determined by majority whether the motion detected by the motion detection sensor 5 is due to a suspicious person based on the determination results of the three determination processes (step S16). That is, if it is determined that at least two of the three determination processes described above are due to a suspicious person (YES in step S16), it is determined that the movement is a suspicious person (step S17). ). On the other hand, when the number of suspicious persons is one or less in the determination result, it is determined that the movement is other than the suspicious person (step S18).

  If the movement of the suspicious person is determined (step S17), the apparatus body 18 detects whether or not the chime signal 26 is received by the operation of the door chime 15 by the chime signal receiving circuit 27 (step S19). If 26 is received (YES in step S19), it is determined that the movement is other than a suspicious person, and the process proceeds to step S18. On the other hand, when the chime signal 26 is not received, the neighboring residents and the like are notified by voice that there is a suspicious person in the site 3 (step S20). Here, when the chime signal 26 is received, that is, when the visitor calls the door chime 15, it is determined that the call is made by a normal visitor such as a courier, and the movement of the suspicious person is determined. Process to reverse. Thereby, generation | occurrence | production of a misinformation can be prevented.

  If it is determined that the movement is other than a suspicious person (step S18), the presence / absence of reception of a door opening signal 29 sent from the door opening / closing sensors 16a and 16b installed on the front door 6 and the back door 8 is detected (step S18). S21) When the door opening signal 29 is received (YES in step S21), the determination is made that the movement is caused by the suspicious person (step S22). Thereafter, the process proceeds to step S20, and the presence of a suspicious person is notified in the same manner as described above. On the other hand, when the door opening signal 29 is not received (NO in step S21), the process of step S18 determined to be a motion other than the suspicious person is confirmed, and the determination process is terminated. Thereafter, after notifying the presence of a suspicious person or after finishing the determination process, the presence or absence of an input instruction for stopping the operation of the security device is detected (step S23). Stop (step S24). On the other hand, if there is no input instruction (NO in step S23), the process returns to step S3, and the detection of the movement of the detection object in the site 3 (detection of a change in reflectance) is continued. In the case of the security device 1 of the present embodiment, the house 4 is taken out by the housekeeper, and the entrance door 6 and the back door 8 are naturally locked. Even in such a situation, when the reception of the door opening signal 29 is confirmed, it is determined that the lock is released by some unauthorized means, and it can be inevitably determined as the movement of the suspicious person.

  As described above, according to the security device 1 of the present embodiment, a plurality of motion detection sensors 5 are installed, and a suspicious person or a person other than a suspicious person is selected depending on the installation position and detection order of the motion detection sensor 5. The movement can be determined and the result can be notified to neighboring residents. As a result, the frequency of occurrence of false alarms and misrecognitions can be reduced as compared with conventional crime prevention measures such as security lights. In particular, the installation position of the motion detection sensor 5 that first detected the movement is specified, and the suspicious person is determined based on the installation position, or the action order with the normal visitor is compared with the detection order of the motion detection sensor 5. In addition, it is possible to accurately determine whether or not the movement is a suspicious person according to the length of the detection time for each movement detection sensor 5. In addition, based on the chime signal 26 sent from the door chime 15 and the door opening signal 29 by the door opening / closing sensors 16a and 16b, even if the determination result by the above-described three determination processes is used, In the case of a specific condition such as an opening operation of the door 6 or the like, the determination result can be overturned, and each can be specified as a person other than a suspicious person or a suspicious person, and the determination accuracy can be further improved.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various improvements can be made without departing from the spirit of the present invention, as described below. And design changes are possible.

  For example, in the security device 1 of the present embodiment, when two or more of the three determination processes are determined to be a suspicious person's movement, a final decision is made by a majority decision that notifies the existence of a suspicious person. It is not limited, and when one or more or all determination results are determined as the movement of the suspicious person, the movement by the suspicious person may be finally authorized. Moreover, you may determine by attaching | subjecting a weight value to every three determination processes. For example, when the motion detection sensor 5 that has detected the first sensor signal 12 is other than the front gate 10 and the back gate 11, it is determined that the possibility of a suspicious person is extremely high, and the determination of processing related to the detection order and the detection time is performed. It may be one that places importance on processing.

  Furthermore, in the security device 1 of this embodiment, the example which assumed the daytime when the housekeeper went out was shown, However, it is not limited to this, For example, the security device 1 is operated in the middle of the night when the housewife is asleep. It does not matter. In this case, a newspaper delivery person who enters the site 3 from the front gate 10 and immediately moves to the entrance 7 and leaves the site 3 in a short time such as posting a newspaper is recognized as a normal visitor, and is a homemaker early in the morning. The presence of suspicious persons that cause suspicion is not reported.

DESCRIPTION OF SYMBOLS 1 Security apparatus 2 ３ 3 Site 4 House 5 Motion detection sensor 6 Entrance door 7 Entrance 8 Back door 9 Hand gate 10 Front gate 11 Back gate 12 Sensor signal 13 Main body 14 Notification part 15 Door chime 16a, 16b Door opening / closing sensor 18 Signal receiving circuit DESCRIPTION OF SYMBOLS 19 Detection order recognition circuit 20 Detection time measurement circuit 21 Suspicious person determination circuit 22 Sensor position determination circuit 23 Action order determination circuit 24 Specified time determination circuit 25 Memory circuit 26 Chime signal 27 Chime signal reception circuit 28 Chime signal determination circuit 29 Door open signal 30 Door open signal receiving circuit 31 Door open signal judging circuit

Claims (3)

A plurality of motion detection sensors installed around a building and detecting a motion of a detection object and transmitting a sensor signal;
A signal receiving circuit that is connected to each of the motion detection sensors and receives the sensor signal by specifying the motion detection sensor that has transmitted the sensor signal, and a plurality of sensor signals that are transmitted in accordance with the movement of the detection object. A detection order recognition circuit for recognizing the detection order of the motion detection sensors in time series, and a detection time measurement for measuring a detection time from detection of motion of the detection object to completion for each of the motion detection sensors The movement of the detection object enters the site of the building based on at least one of a circuit and the motion detection sensor that first transmitted the sensor signal, the recognized detection order, and the detection time An apparatus main body having a suspicious person determination circuit for determining whether or not the movement is caused by a suspicious person's movement,
A notification unit that is connected to the apparatus main body and notifies the presence of the suspicious person when the suspicious person determination circuit determines that the suspicious person is moving;
The suspicious person determination circuit
A sensor position determination circuit that first detects the movement of the detection object and determines the position based on an installation position of the movement detection sensor that has transmitted the sensor signal;
An action order determination circuit that determines whether or not the recognized detection order matches a predetermined visitor action order;
A security device, comprising: a specified time determination circuit that determines whether the measured detection time exceeds a specified time that is specified in advance for each of the motion detection sensors. The building is
It further comprises a door chime installed at the entrance,
The apparatus main body is
A chime signal receiving circuit which is connected to the door chime and receives a chime signal sent in response to a call operation of the door chime;
When the chime signal is received, at least one of the sensor position determination circuit, the action order determination circuit, and the specified time determination circuit determines that the movement of the detection target is due to the movement of the suspicious person. However, the security device according to claim 1, further comprising a chime signal determination circuit that determines a movement other than the suspicious person. The building is
The door further includes a door opening / closing sensor that is installed on the door of the building and detects the opening / closing state of the door,
The apparatus main body is
A door open signal receiving circuit connected to the door open / close sensor and receiving a door open signal indicating a door open state sent from the door open / close sensor;
When the door opening signal is received, it is determined that all of the sensor position determination circuit, the action order determination circuit, and the specified time determination circuit are caused by movements other than the suspicious person. 3. The security device according to claim 1, further comprising a door opening signal determination circuit that determines that the movement of the suspicious person.

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