JP2010146290A - Crime prevention system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately secure against a suspicious person while suppressing excessive security against a person who is admitted. <P>SOLUTION: In the premise 11, as premise surrounding sensors 21A and 21B, a front sensor 21A detecting a front area Lv3 including a premise entrance 16 and a side sensor 21B detecting a side area Lv4 including a parking entrance 15 and an outside ditch 17 are provided. A controller detects an intrusion place around the premise where a person has entered from the outside of the premise 11 on the basis of human detection signals from the premise surrounding sensors 21A and 21B, sets a security level corresponding to the intrusion place, and implements security according to the set security level. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a security system.

Conventionally, for the purpose of improving the crime prevention of buildings, a human sensor has been installed in the building or site to detect the presence or absence of people, and a warning is given if the human sensor detects that a suspicious person has entered the building or site. Various security systems have been proposed (see, for example, Patent Document 1). In the crime prevention system disclosed in Patent Document 1, a plurality of sensors each having a plurality of security locations as detection areas are provided. When a resident is at home or going out, all of the plurality of security locations are in a warning state. It is disclosed that, when a resident returns home or goes out, the minimum necessary security location (for example, the entrance approach portion) corresponding to the outing route is released from the security status among a plurality of security locations.
JP 2001-266269 A

  However, in the crime prevention system disclosed in Patent Document 1, there is a concern that a warning is always issued when a person other than the resident enters the building from the entrance approach section. That is, even if a person who is allowed to enter the site, such as a postman, meter meter reader, neighbor, etc., goes to the entrance of the building or meter through the entrance approach part, like a suspicious person, A warning will be issued to remove these people from the site.

  The present invention has been made in view of the above-mentioned phenomenon, and provides a crime prevention system capable of appropriately carrying out warning for a suspicious person while suppressing excessive warning for a person allowed to enter a site. The main purpose.

  The present invention employs the following means in order to solve the above problems.

  The present invention is a crime prevention system for guarding a site equipped with a building, and detects by a place detection means for detecting from which place an intruder enters the site, and the place detection means. Level setting means for setting a warning level according to the entered entry place, and control means for carrying out warning according to the warning level set by the level setting means.

  According to the present invention, when there is an intruder in the site, the normal approach is to set a different warning level depending on where the intruder enters the site from where the intruder enters the site. The degree of vigilance can be different between those who have entered the site through the road and those who have not. That is, it is considered that a person who is allowed to enter the site such as a delivery person or a neighbor usually enters the site through a regular approach path. On the other hand, in the case of a suspicious person, it may be possible to avoid the regular approach path and enter the site. Therefore, according to the present invention, it is possible to appropriately carry out warning against a suspicious person while suppressing excessive warning against a person allowed to enter the site.

  In this invention, the said level setting means is good to set the permission time of the stay in the said site as a setting of the alert level according to the said approach place. According to this configuration, since the stay permission time in the site is determined according to which place around the site is entered, a different stay permission time can be set according to the person entering the site. In other words, for those who are allowed to enter the site, that is, those who are considered to enter the site through the regular approach path, while staying on the site is allowed relatively long, suspicious person In other words, those who are considered to enter the site avoiding the regular approach can be removed from the site as soon as possible.

  In the present invention, it comprises route detection means for detecting a moving route of an intruder in the site, and the level setting means is detected by the route detection means after setting the warning level according to the entry location. The warning level may be changed according to the travel route of the intruder. For example, even if the alert level is set high based on the approach locations around the site, it can be considered that the actual alert level is low. On the other hand, even if the alert level is set low based on the entry location, it may be considered that the person is actually highly alert. In that respect, according to the present invention, the warning level is reset according to the moving route of the intruder on the site, and therefore, the warning level can be corrected according to the degree of warning for the intruder.

  In the configuration in which the warning level is changed according to the travel route within the premises of the intruder, the location detection means detects whether the entry location is normal, and the route detection means is the location detection means And the level setting means detects that the moving path of the intruder indicates suspicious behavior by the path detecting means. If this happens, change the alert level to a higher level. If it carries out like this, appropriate warning can be implemented with respect to the suspicious person who entered the site from the regular approach path, and the suspicious person can be suitably excluded.

  In the present invention, the site includes a plurality of site areas, and includes a wall-side area provided in a peripheral part of the outer wall of the building as the site area, and the level setting means is a warning of the wall-side area. The level may be set to the highest warning level among settable warning levels. According to this structure, since the vigilance in the area near the building in the site becomes strong, it is possible to suppress the intrusion into the building by the suspicious person.

  In the present invention, the level setting means may set different warning levels according to directions based on the front of the site when setting the warning level according to the entry location. The location where a blind spot is formed on the site differs depending on the direction relative to the front of the site (for example, the side facing the road), and the back side is more likely to be a blind spot than the front of the site. Therefore, in addition to the entry location of the intruder around the site, by setting the alert level according to the direction based on the front of the site, it is possible to implement appropriate alert for the intruder with a higher alert level .

  In the present invention, the level setting means sets how many of the plurality of person detection means are activated as a warning level setting according to the entry place, and the control means The person detecting means activated by the setting means may be activated. According to this configuration, it is possible to change the number of person detection means activated and the warning area according to the place where the intruder enters the site, which is suitable for carrying out the warning according to the approach route. It is. Here, “setting how many of the plurality of person detecting means are activated” includes a case where the person detecting means is thinned and activated, and a case where the person detecting means in a specific area is activated.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a schematic configuration of a site and a building applied to the crime prevention system of the present embodiment.

  In FIG. 1, a site 10 is provided with a building 10, and a parking lot 12 having a space where the vehicle V can be parked is provided apart from the building 10. In front of the building 10 and the parking lot 12, an approach 14 leading to the entrance 13 of the building 10 and a parking entrance 15 leading to the parking lot 12 are provided. In addition, on the outer edge of the site 11, a site entrance 16 formed by a gate or the like is provided at the end of the approach 14 in the front of the site, and in a portion excluding the site entrance 16 and the parking entrance 15, For example, an exterior 17 such as a fence or a fence is provided. The space between the external building 17 and the building 10 is used as various spaces. In this embodiment, in addition to the approach 14 and the parking lot 12 described above, a garden used for multiple purposes (for example, entertainment and planting) by a resident. 18 and various meter equipments 19 such as an electric meter and a water meter.

  Next, the security system will be described. This crime prevention system issues a warning when it is detected that there is a person in a warning area defined in the site 11 and a predetermined warning condition is satisfied, in order to eliminate a suspicious person who has entered the site 11.

  FIG. 2 is a plan view of the site 11 showing a warning area in the security system. As shown in FIG. 2, a plurality of warning areas are defined in the site 11, specifically, a wall-side area Lv <b> 1 defined around the outer wall of the building 10 (hatched portion of the dotted frame in FIG. 2). And an intermediate area Lv2 (a hatched portion of a one-dot chain line frame in FIG. 2) defined between the wall area Lv1 and the outer structure 17 is provided.

  In each of the warning areas Lv1 and Lv2, as shown in FIG. 2, at least one in-site sensor 20A, 20B as a human sensor composed of an infrared sensor or the like is arranged. Each of the in-site sensors 20A and 20B uses the arranged warning area as a detection area. Specifically, among the in-site sensors 20, the sensor (LV1 sensor) 20A arranged in Lv1 detects Lv1. The sensor (LV2 sensor) 20B arranged at Lv2 uses Lv2 as a detection area. That is, according to the site sensors 20A and 20B, the presence or absence of a person in each of the warning areas Lv1 and Lv2 is detected.

  In addition, the crime prevention system is provided with a site perimeter sensor having a detection area around the outer edge of the site 11 as a human sensor other than the site sensors 20A and 20B. Specifically, as shown in FIG. 3, the front-side sensor 21A including the front-side area Lv3 including the site entrance 16 (the hatched portion of the solid line frame in FIG. 3) as the detection area, the parking entrance 15 and the outside The side area Lv4 including the structure 17 (the hatched portion of the dotted line frame in FIG. 3) includes a side sensor 21B having a detection area. As a result, the front sensor 21A detects the presence of a person who enters the site 11 through the site entrance 16 and the side sensor 21B enters the site 11 through the parking entrance 15 or the exterior 17. The presence of the person to be detected is detected. That is, according to the site perimeter sensors 21A and 21B, it is detected whether the person's entry location detected in the alert areas Lv1 and Lv2 is the site entrance 16 or other than the site entrance 16. In the present embodiment, the site perimeter sensors 21A and 21B correspond to the location detecting means.

  Next, the electrical configuration of the security system will be described with reference to FIG.

  In FIG. 4, the crime prevention system has a controller 30, and the entire system is controlled by the controller 30. The controller 30 is a computing device including a known microcomputer or the like, and is installed on the wall surface of the building 10 such as a dining room. In addition to the on-site sensors 20A and 20B and the on-site outer circumference sensors 21A and 21B, the controller 30 is connected with an alarm device 35 that issues a warning. A security system is constructed by these devices and the controller 30. Yes.

  The site sensors 20A and 20B and the site outer periphery sensors 21A and 21B sequentially output a person detection signal indicating the presence or absence of a person in each detection area to the controller 30. The controller 30 determines that there is a person at the site entrance 16 when a person detection signal is input from the front sensor 21A of the site periphery sensors 21A and 21B, and the person detection signal is input from the side sensor 21B. When it is input, it is determined that there is a person at the parking entrance 15 or the exterior 17. Moreover, when the person detection signal with a person is input from the site sensors 20A and 20B, the controller 30 determines that a person exists in the detection area of the site sensors 20A and 20B.

  The controller 30 detects the passing direction of people at the site entrance 16, the parking entrance 15, and the exterior 17 based on the person detection signals from the site sensor 20 </ b> B and the site periphery sensors 21 </ b> A and 21 </ b> B. Specifically, if the order of human detection by the site sensor 20B and the site outer sensor 21A, 21B is “site sensor 21A, 21B → site sensor 20B”, it is the time when a person enters the site 11. If it is “site sensor 20B → site outer circumference sensors 21A, 21B”, it is detected that the person is leaving the site 11 at the time.

  In addition, the detection method of a person's passage direction is not limited to this. For example, for the site periphery sensors 21A and 21B, a double detection area (outside area and inside area) adjacent to the inside and outside in the site 11 is defined, and an outside sensor and an inside sensor each having the outside area as a detection area. And provide. If the order of human detection by the sensor is “outside sensor → inside sensor”, it is detected that a person has entered the site 11, and if “inside sensor → outside sensor”, the site 11 It is detected that the person is leaving.

  Of the site perimeter sensors 21A and 21B, the front sensor 21A includes a communication unit 22, and wireless communication with an electronic key 23 that is carried by a resident and stored with unique identification information (ID information) is possible. . When the electronic key 23 is present in the communication area defined in the vicinity of the site entrance 16, the ID signal from the electronic key 23 is received by the communication unit 22 of the front sensor 21 </ b> A and then output to the controller 30. The controller 30 performs user authentication based on information received from the electronic key 23 (key ID). If the key ID is a regular ID, the controller 30 determines that the visitor is a resident.

  The alarm device 35 is a device that emits a warning sound such as a buzzer or warning light, and is arranged in the site 11. The alarm device 35 receives a drive signal from the controller 30 and issues a warning based on the drive signal.

  Next, the control of the controller 30 in this system will be described in detail below. In the above configuration, the controller 30 detects the presence / absence of an intruder and the place of entry based on the person detection signals from the site perimeter sensors 21A and 21B, and inputs a person detection signal indicating that there is a person from the site perimeter sensors 21A and 21B. In this case, a warning level is set according to which sensor the person detection signal is input from, that is, which is around the site is the entry location. And warning is implemented in the aspect according to the warning level. In the present embodiment, as the alert level setting, the permitted time of stay in the site 11 is set according to the entry location, and the intruder stays in the site 11 beyond the set permitted time. In this case, a warning by the alarm device 35 is issued.

  Specifically, the controller 30 includes a storage unit 31 and a control unit 32 as shown in FIG. The memory | storage part 31 memorize | stores the various information concerning a control program, and especially in this embodiment, the relationship between an approach place and stay permission time is previously memorize | stored as a map, for example.

  FIG. 5 is a diagram illustrating an example of the relationship between the entry location and the stay permission time. In the present embodiment, the stay permission time (first permission time KA) on the site 11 is set to a different value depending on whether the place of entry from the outside of the site 11 is the front area Lv3 or the side area Lv4. . That is, if the visitor is allowed to enter the site 11 such as a delivery person or a neighbor, it is considered that the visitor enters the site 11 through the normal entrance path, that is, the site entrance 16. On the other hand, in the case of a suspicious person, it can be considered that the person enters the site 11 other than the normal approach path, that is, beyond the exterior 17 or through the parking entrance 15. Therefore, in order to remove the suspicious person from the site 11 as early as possible, in the present embodiment, as shown in FIG. When the place is the front area Lv3, the first permission time KA is set to TLV3. On the other hand, when the entry place is the side area Lv4, the first permission time KA is set to TLV4 (TLV3> TLV4) shorter than TLV3.

  Further, in the security area defined in the site 11, the security level is different between the wall area Lv1 and the site area excluding the wall area Lv1 (that is, the intermediate area Lv2), and the security level of the wall area Lv1 is higher than that of the intermediate area Lv2. It is high. Specifically, as shown in FIG. 5, in the wall area Lv1, a time shorter than the first permission time KA is set as the stay permission time (second permission time KB).

  Note that the second permission time KB may be set to a different value depending on the place where the intruder enters. At this time, it is desirable to make the second permission time KB longer in the case where the intruder enters the site entrance 16 than in the case other than the site entrance 16. Moreover, it is good also as a structure which sets the 2nd permission time KB and raises the alert level of the wall area Lv1 only when the approach place of an intruder is the site entrance / exit 16 or the case other than the site entrance / exit 16. .

  Returning to the description of the controller 30 in FIG. 4, the control unit 32 executes various programs stored in the storage unit 31 based on various signals input from the site periphery sensors 21 </ b> A and 21 </ b> B and the site sensors 20 </ b> A and 20 </ b> B. . Specifically, the control unit 32 inputs a person detection signal from the site perimeter sensors 21A and 21B and the site sensors 20A and 20B, a key ID from the front sensor 21A, etc., or a person's stay time at the site 11 (Site stay time T1) and a person's stay time in the wall area Lv1 (building stay time T2) are measured. Moreover, the control part 32 outputs the drive signal to the effect of warning to the alarm device 35 based on various input signals and the like. And the control part 32 uses the relationship memorize | stored in the memory | storage part 31, when a person detection signal that there is a person is input from either of the site | part outer periphery sensors 21A and 21B as a warning process, an approach of an intruder The stay permission time corresponding to the place and the stay place is set, and a warning corresponding to the set content is performed.

  Next, operation | movement of this crime prevention system performed by the control part 32 of the controller 30 is demonstrated using FIG. FIG. 6 is a flowchart showing the procedure of the security process in the security system. This process is executed at a predetermined time period (for example, every 1 sec).

  In FIG. 6, in step S <b> 10, it is first determined whether or not a person is staying in the site 11. When the person detection signal with a person is not input from the site periphery sensors 21A and 21B, or when a predetermined time or more (for example, several seconds or more) has passed since the input, and the site sensor 20A, If no human detection signal is input from any of 20B, it is determined that a person is not staying in the site 11, and the process proceeds to step S11 to determine whether there is a person entering the site 11. judge. If a person detection signal with a person is input from one of the site perimeter sensors 21A and 21B and a person detection signal with a person is input from the site sensor 20B immediately after that, there is an intruder in the site 11 It progresses to step S12, and it is determined whether the intruder is a resident. If the ID signal from the electronic key 23 is input and the key ID is a regular ID, the intruder is determined to be a resident, and thus this routine is terminated without performing a warning.

  On the other hand, if the key ID is not received or the received key ID is not a regular ID, it is determined that the intruder is not a resident, and the process proceeds to step S13, where the intruder enters the site 11 from any location. Judge whether or not. At this time, if the output source of the person detection signal is the front sensor 21A of the site outer periphery sensors 21A and 21B, it is determined that the entry location of the intruder is the site entrance 16 and the process proceeds to step S14 to set a warning level. As a result, the first permission time KA is set to TLV3. On the other hand, if the output source of the person detection signal is the side sensor 21B, it is determined that the approach place is the parking entrance 15 or the exterior 17 and the process proceeds to step S15, and the first permission time KA is set as a warning level. Set to TLV4.

  In addition, when an intruder is staying in the site 11, that is, when a predetermined time or more (for example, several seconds or more) has passed since inputting the person detection signal with the person from the site periphery sensors 21A and 21B. If a person detection signal with a person is input from either of the on-site sensors 20A and 20B, an affirmative determination is made in step S10, the process proceeds to step S16, and the intruder stays in the wall area Lv1. It is determined whether or not. When the person detection signal indicating that there is a person is input from the LV2 sensor 20B among the on-site sensors 20A and 20B, it is determined that the intruder is not in the wall area Lv1, and the process proceeds to step S18.

  On the other hand, when the person detection signal with a person is input from the LV1 sensor 20A, it is determined that the intruder is staying in the wall area Lv1. And it progresses to step S17, while setting TLV1 to the 2nd permission time KB, it counts up building periphery stay time T2 only by the value 1, and progresses to step S18.

  In step S18, the site stay time T1 is counted up by a value 1, and in step S19, it is determined whether or not the site stay time T1 has exceeded its permission time KA. And if site stay time T1 has exceeded the 1st permission time KA, it will progress to Step S22 and will give warning by alarm device 35.

  On the other hand, when the site stay time T1 does not exceed the first permission time KA, the process proceeds to step S21, and it is determined whether or not the building stay time T2 exceeds the second permission time KB. When the staying time T2 around the building does not exceed the second permission time KB (TLV1), the routine is terminated without executing the warning by the warning device 35. On the other hand, when the stay time around the building T2 exceeds the second permission time KB (TLV1), the process proceeds to step S22 and a warning is issued by the warning device 35. In the present embodiment, when the alarm by the alarm device 35 is stopped by a resident, for example, the site stay time T1 and the building periphery stay time T2 are reset to zero.

  If there is no person in the site 11 and there is no person entering the site 11, a negative determination is made in steps S10 and S11, and the process proceeds to step S23. In step S23, it is determined whether or not there has been an exit from the site 11. At this time, when a person detection signal with a person is input in the order of the site sensor 20B → the site periphery sensor 21A, B, it is determined that there is a person leaving the site 11, and the process proceeds to step S24, where the site stay time T1 Then, the residence time T2 around the building is reset to zero, and this routine is terminated.

  FIG. 7 is a time chart for explaining the operation status of the security system. 7A shows a case where an intruder has entered the site 11 from the site entrance 16, and FIG. 7B shows a case where the intruder has entered the site 11 over the exterior 17, (c ) Shows a case where an intruder stays in the wall side area Lv1 after entering the site 11 from the exterior 17.

  When an intruder enters the site 11 from the site entrance 16, first, as shown in FIG. 7A, a person has passed through the site entrance 16 by the front sensor 21 </ b> A among the site periphery sensors 21 </ b> A and 21 </ b> B. Subsequently, the presence of a person is detected by the in-site sensor 20B. Thereby, it is detected from the site entrance 16 that there is an intruder in the site 11, TLV3 is set as the first permission time KA, and measurement of the site stay time T1 is started. At this time, since the first permission time KA is set to TLV3, no warning is given when the site stay time T1 exceeds TLV4 (point A in FIG. 7A). Then, if the on-site sensor 20B and the front sensor 21A detect that there is an exit before the site stay time T1 exceeds the first permission time KA (= TLV3), the site stay time T1 is reset. Thereby, the warning by the warning device 35 will not be implemented. In other words, for a person who passes through the normal site entrance 16 and enters the site 11 in order to fulfill their requirements, such as a postman, neighbor, meter meter reader, etc., it takes a relatively long time. 11 is allowed to stay.

  On the other hand, when the intruder gets over the site 17 and enters the site 11, as shown in FIG. 7B, the side sensor 21 </ b> B out of the site outer periphery sensors 21 </ b> A and 21 </ b> B allows the person to enter the site 17. Is detected, and subsequently, the presence sensor 20B is detected by the in-site sensor 20B. Thereby, it is detected that there is an intruder in the site 11 from the external site 17, TLV4 is set as the first permission time KA, and measurement of the site stay time T1 is started. Thereafter, when the site stay time T1 becomes TLV4, a warning by the alarm device 35 is performed at that time. In other words, since a person who enters the site 11 without passing through the site entrance / exit 16 is generally considered a suspicious person, any person who enters the site 11 from other than the site entrance / exit 16 may enter the site 11. Vigilance is strengthened by allowing only a short stay.

  Moreover, in this embodiment, the warning level is made higher for those who stay in the wall area Lv1 in the site 11 than those who stay in the intermediate area Lv2. Specifically, as shown in FIG. 7 (c), the presence of an intruder in the site 11 is detected by the site outer periphery sensors 21A and 21B (the side sensor 21B in FIG. 7 (c)) and the site sensor 20B. Is done. Thereby, TLV4 is set as the first permission time KA, and measurement of the site stay time T1 is started. Thereafter, when the intruder enters the near-wall area Lv1, the presence of a person in the near-wall area Lv1 is detected by the LV1 sensor 20A among the on-site sensors 20A and 20B. Thereby, TLV1 (<TLV4) is set as the second permission time KB, and measurement of the stay time around the building T2 is started. Even before the site stay time T1 exceeds the first permission time KA, a warning is given by the alarm device 35 when the building periphery stay time T2 exceeds the second permission time KB (= TLV1). That is, in order to prevent the intrusion into the building 10, the person who approaches the building 10 is strengthened by vigilance by shortening the stay permission time.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  When there is an intruder in the site 11, based on the detection results of the site outer periphery sensors 21A and 21B, it is detected from which place the intruder has entered the site 11 and the approach Since it is set as the structure which sets a warning level according to a place, it can be set as a different warning degree by the person who entered the site 11 through the regular approach path, and the person who is not. Thereby, the warning against a suspicious person can be implemented appropriately, suppressing the excessive warning with respect to the person into whom the entrance to the site 11 is permitted.

  Moreover, since it was set as the structure which sets the stay permission time (1st permission time KA) in the site 11 as a warning level setting, the person who is allowed to enter the site 11 stays in the site 11 Can be removed from the site 11 as early as possible by allowing the suspicious person to stay at the site 11 relatively short.

  Since the border area Lv1 and the intermediate area Lv2 are defined as the warning area of the site 11, and the stay permission time in the wall area Lv1 by the intruder is set shorter than the stay permission time in the intermediate area Lv2, The vigilance near the building 10 can be strengthened. Therefore, intrusion into the building 10 by a suspicious person can be suppressed.

(Second Embodiment)
In the above-described embodiment, the controller 30 detects whether an intruder into the site 11 has entered from the site entrance 16 provided in front of the site, or entered from outside the site entrance 16, and according to the entry location. Although the description has been given of changing the stay permission time in the site 11 as the alert level, in the present embodiment, when there is an intruder from the site entrance 16, the controller 30 further provides the site of the intruder. The travel route in 11 is detected, and the stay permission time in the site 11 as a warning level is changed according to the detection result. Hereinafter, the difference will be mainly described.

  FIG. 8 is a plan view of the site 11 showing a warning area in the crime prevention system of the present embodiment. As shown in FIG. 8, in the present embodiment, the intermediate area Lv2 is further divided into a plurality of areas. Specifically, the Lv2A, Lv2B, Lv2C, and Lv2D are respectively provided on the front, left, and right sides and the back of the building 10. Four areas are defined. Among these, Lv2A is an area including the approach 14, and Lv2C is an area including the meter equipment 19.

  In each of the areas Lv2A to Lv2D of the intermediate area Lv2, at least one human detection sensor 40 as a human sensor composed of an infrared sensor or the like is arranged as shown in FIG. In FIG. 8, the human detection sensor 40 is provided as the in-site sensor 20B, but may be provided separately from the in-site sensor 20B. Each human detection sensor 40 uses the arranged warning area as a detection area. Specifically, among the human detection sensors 40, the sensor arranged in Lv2A uses the area Lv2A as the detection area and is arranged in Lv2B. The sensor uses the area Lv2B as a detection area. That is, according to the human detection sensor 40, the presence or absence of a person in each of the warning areas Lv2A to Lv2D is detected.

  Next, the control of the controller 30 in this system will be described in detail below. In addition to the control in the first embodiment described above, the controller 30 is suspicious of the travel route of the intruder in the site 11 when the intruder enters the site 11 from the site entrance 16. Whether or not the action is indicated is determined based on the detection result of the human detection sensor 40. And when it determines with the moving path | route of an intruder showing suspicious behavior, the 1st permission time KA is changed into time shorter than TLV3, and a warning level is made high.

  FIG. 9 is a flowchart showing the processing procedure of the security processing of the security system in which a part of FIG. 6 is changed. In FIG. 9, the same processes as those in FIG. 6 are denoted by the same step numbers as in FIG. In FIG. 9, steps S <b> 11 to S <b> 15 and S <b> 17 to S <b> 22 are omitted from the same processing as in FIG. 6. This process is executed at a predetermined time period (for example, every 1 sec).

In FIG. 9, first, in step S10, it is determined whether or not a person is staying in the site 11, and if the person is staying, the visitor enters from the front of the site (site entrance 16) in step S31. It is determined whether it is a person. If it is not an intruder from the site entrance 16, that is, an intruder from the exterior 17 or the parking entrance 15, the processes after step S 16 are executed. On the other hand, if it is an intruder from the site entrance 16, the process proceeds to step S <b> 32, and based on the detection result of the human detection sensor 40, it is determined whether the moving path of the intruder indicates suspicious behavior. Specifically, as suspicious behavior,
(1) When an intruder walks around the site 11, movement between areas is detected a plurality of times. For example, as shown in FIG. 8, an intruder M entering from the site entrance 16 is “Lv2A → Lv2B → Lv2A” → Lv2C ”, the presence of a person is sequentially detected by a plurality of human detection sensors 40 having different detection areas.
(2) The presence of a person is detected by the human detection sensor 40 having an area (for example, Lv2B or Lv2D) that is not used by a person other than the resident as a detection area.
Including at least one of the following. If it is determined that the moving route of the intruder from the front of the site indicates suspicious behavior, the process proceeds to step S33, and the first permission time KA is changed to a time shorter than TLV3 (for example, TLV4).

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  Since the warning level is set according to the moving route of the intruder detected by the human detection sensor 40 after the warning level is set according to the approaching place of the intruder, the approach of the intruder is set when the warning level is set. In addition to the location, the behavior after the intruder enters the site 11 can also be considered. In particular, in the present embodiment, when the entrance location of the intruder is determined as the site entrance 16 by the site outer periphery sensor 21A and it is determined that the moving route of the intruder indicates suspicious behavior, Since the stay permission time is configured to be shortened, it is possible to appropriately carry out warning for a suspicious person who has entered the site 11 from the regular approach path, that is, the site entrance 16. On the other hand, even a person who has entered from the external building 17 is not intrusive to the building 10 (for example, a person who has entered to take a ball thrown into the site 11). Unless the person takes a suspicious action in the site 11, the warning by the warning device 35 can be prevented.

(Other embodiments)
The present invention is not limited to the description of the above embodiment, and may be implemented as follows, for example.

  -In the said embodiment, it was set as the structure which sets the stay permission time (1st permission time KA) in the site 11 as a setting of the alert level according to the approach place, but it replaced with the setting of the 1st permission time KA, When a plurality of in-site sensors 20 (corresponding to human detection means) are arranged in the site 11, the controller 30 enters how many of the plurality of in-site sensors 20A and 20B are activated. It is good also as a structure defined according to a place. Specifically, in the second embodiment, as shown in FIG. 8, in the configuration in which the person detection sensor 40 as the site sensor 20 </ b> B is provided, the entrance location to the site 11 is the site entrance 16. First, the human detection sensor 40 having the area including the approach 14 as a detection area and the human detection sensor 40 having the area including the meter equipment 19 as a detection area are activated. On the other hand, when the entrance location is other than the site entrance 16, all the human detection sensors 40 in the site 11 are activated.

  Alternatively, in a configuration that determines how many of the plurality of in-site sensors 20A and 20B are activated according to the entry location, the plurality of in-site sensors 20A and 20B are arranged at predetermined intervals on the entire site 11 and activated. The number of the sensors may be changed by thinning out. For example, when the entrance location of the intruder is the site entrance 16, the site sensors 20 A and 20 B are thinned and activated, and when the entrance location is other than the site entrance 16, all the site sensors 20 A and 20 B are activated. .

  Moreover, it is good also as a structure which changes the sensor sensitivity of site | part sensors 20A and 20B instead of the setting of 1st permission time KA as setting of the alert level according to an approach place. At this time, when the entrance location into the site 11 is other than the site entrance 16, it is desirable to increase the sensor sensitivity as compared with the case where the entrance location is the site entrance 16. Moreover, it is good also as a structure which replaces with the setting of 1st permission time KA and changes the detection range of site | part sensors 20A and 20B. At this time, when the entrance location into the site 11 is other than the site entrance 16, it is desirable to make the detection range wider than when the entrance location is the site entrance 16.

  -When a warning level is set according to the place where an intruder enters the site 11, a different warning level may be set depending on which direction the entry location is based on the site front. . Specifically, when the site 11 faces the road, it is behind the site that is hidden by the building 10 when viewed from the road, rather than the front of the site that is located in front of the building 10 when viewed from the road. Since the person is more likely to become a blind spot, the alert level is increased in the order of the front, left, and back of the site 11 (the first permission time KA is shortened). Thereby, alertness can be strengthened as an intruder with high alertness.

  -When setting the 1st permission time KA as a warning level according to the approach place of the intruder to the site 11, it is good also as a structure which changes the 1st permission time KA with a resident at home and when it is absent. . Specifically, an operation panel capable of switching between the home mode and the absence mode by the resident's input operation is provided in the controller 30, and the setting of the first permission time KA is changed according to the mode setting. At this time, it is desirable to increase the alert level (shorten the first permission time KA) when setting the absent mode than when setting the home mode.

  In the above-described embodiment, the alert location is set to a different warning level depending on whether the entrance location to the site 11 is the site entrance 16 or the entrance location is the parking entrance 15 or the exterior 17. In the case of the entrance 15, the warning level may be set to the same level as the site entrance 16 or an intermediate level between the site entrance 16 and the external structure 17. For example, when the parking lot 12 is an open space without partitioning by an outer wall or a gate, a person who is allowed to enter the site 11 such as a meter meter inspector enters and exits the site 11 from the parking entrance 15. Can be considered. Therefore, a warning level is set lower for an intruder from the parking entrance 15 than for an intruder from the exterior 17.

  ・ Although the approach from the front of the site is regarded as a regular approach and the other is not a regular approach, the entry from other than the front of the site may be regarded as a regular approach in addition to the front of the site. Specifically, in a configuration in which a back doorway is provided as an entrance other than the site doorway 16 at the outer edge of the site, a person who enters the site 11 through the back doorway is more than a person entering from the exterior 17 Alternatively, the alert level may be lowered. For example, when the entry place of the intruder into the site 11 is a back door, the first permission time KA is set longer than that when the entry place is the exterior 17. In addition, it is desirable to increase the alert level for the intruder from the back doorway than for the intruder from the site doorway 16, for example, the first permission time KA is shorter in the latter than in the former.

  -In the said embodiment, although it was set as the structure which sets the different alert level according to which the person who entered the site 11 is staying in either the intermediate area Lv2 or the wall side area Lv1, this is changed, and the intermediate area Lv2 may be further divided into a plurality of areas, and different alert levels may be set for each area. At this time, it is good also as a structure which changes the division of intermediate | middle area Lv2 according to the approach place of the intruder to the site 11. FIG. Specifically, it is determined which entry place the intruder enters, and if the entry place is other than the site entrance 16, the intermediate area Lv2 is not divided, and the warning level is set throughout the intermediate area Lv2. Make the same. On the other hand, when the entrance location is the site entrance 16, as shown in FIG. 10, the intermediate area Lv 2 is divided into an area Lv 5 including an approach 14 and an entrance route from the site entrance 16 to the meter equipment 19, and other areas Lv 6. Divide into and. In addition, in the area Lv5 and the area Lv6, an in-site sensor 20B having each area as a detection area is provided. For the area Lv6, the first permission time KA remains TLV3, while for the area Lv5, the first permission time KA is set to TLV5 longer than TLV3. By carrying out like this, it can suppress that a system overreacts with respect to the person into whom the entrance into the site 11 is permitted.

  In the above embodiment, the site periphery sensors 21A and 21B and the site sensors 20A and 20B may be different types of sensors. For example, the site periphery sensors 21A and 21B are configured by photoelectric tube sensors, and the site sensors 20A and 20B are configured by electrostatic sensors. When the presence of a person is detected by the photoelectric tube sensor, the electrostatic sensor is activated and the photoelectric tube sensor is activated and stopped.

The top view which shows schematic structure of the site applied to a crime prevention system, and a building. The top view of the site which shows a warning area. The top view of the site which shows a warning area. The schematic block diagram which shows the electric constitution of a crime prevention system. The figure which shows an example of the relationship between an approach place and stay permission time. The flowchart which shows an example of the process sequence of a crime prevention process. The time chart for demonstrating the operating condition of a security system. The top view of the site which shows a warning area. The time chart for demonstrating the operating condition of the crime prevention system of other embodiment. The top view of the site which shows the alert area of other embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Building, 11 ... Site, 14 ... Approach, 15 ... Parking entrance / exit, 16 ... Site entrance / exit, 17 ... Exterior, 20A, 20B ... Site sensor (person detection means), 21A, 21B ... Site outer periphery sensor (location detection) Means), 21A ... front sensor, 21B ... side sensor, 30 ... controller (level setting means, control means, route detection means), 40 ... human detection sensor, Lv1 ... wall side area, Lv2 ... intermediate area, Lv3 ... front area , Lv4 ... Side area.

Claims (7)

It is a security system that guards the site with buildings,
A place detecting means for detecting from which place around the site the intruder enters the site;
Level setting means for setting a warning level according to the approach location detected by the location detection means;
Control means for carrying out warning according to the warning level set by the level setting means;
A security system characterized by comprising:   The crime prevention system according to claim 1, wherein the level setting means sets a permission time for staying in the site as a warning level setting according to the entry location. Comprising route detecting means for detecting a moving route of the intruder in the site,
3. The level setting unit according to claim 1, wherein the level setting unit changes the warning level according to a moving route of the intruder detected by the route detection unit after setting the warning level according to the entry location. Crime prevention system. The location detection means detects whether the entry location is regular,
The route detection means detects the moving route of the intruder when the entry place detected by the place detection means is normal,
The security system according to claim 3, wherein the level setting means changes the alert level to a higher side when the route detection means detects that the moving route of the intruder shows suspicious behavior. The site has a plurality of site areas,
Including a wall-side area provided in the periphery of the outer wall of the building as the site area,
The crime prevention system according to any one of claims 1 to 4, wherein the level setting means sets a warning level of the wall area to the highest warning level among settable warning levels.   The said level setting means sets a different warning level according to the direction on the basis of the said site front in setting a warning level according to the said approach place. Security system. A plurality of person detection means for detecting the presence or absence of a person with any area of the site as a detection area,
The level setting means sets how many of the plurality of person detection means are activated as a warning level setting according to the approach location,
The crime prevention system according to any one of claims 1 to 6, wherein the control means activates the person detection means activated and set by the level setting means.

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