Intrusion prevention device, intrusion prevention program

Abstract

To suppress intrusion by surely guiding an intrusion object to a predetermined guide destination when the intrusion object gets close to a region desired to prevent intrusion of the intrusion object.SOLUTION: A plurality of guide parts 12 that belong to a guide part group 14 are arranged in a mesh shape in a third region 24 set between a first region 20 and a second region 22. A noxious animal that intrudes into the third region 24 from the first region 20 is efficiently kept away from the first region 20 and guided to the second region 22 with sound waves transmitted in time series by means of analysis and the like of a photographed image from a monitoring device 18. Even in a case where effects are exhibited in the concentric circular shape without directivity due to structural characteristics of the guide parts 12, the noxious animal can be surely released in an expected direction.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an intrusion prevention device and an intrusion prevention program. [Background technology]

[0002] For example, there are various attracting devices that emit ultrasonic waves, gas, visible light, sound, etc. as mechanisms for repelling harmful animals such as wild boars, deer, and crows.

[0003] Patent Document 1 describes a technology that enables low-cost and effective intimidation of targets including harmful animals and suspicious people.

[0004] More specifically, the gas emission unit is configured to generate and retain gas containing an attractant and a deterrent substance using an ultrasonic atomizer within the housing, and then forcibly release the retained gas outside the housing in a short period of time using a blower fan. Furthermore, when a target animal is detected from image data output from the infrared camera, the control unit determines the target's direction and distance. Then, it selects either the attractant or the deterrent substance depending on the distance to the target, and controls the gas emission unit 1 to generate and release the gas containing the selected substance.

[0005] That is, in Patent Document 1, a target is detected and gas is released, and a single repelling device is activated to spray the gas, so that the repelling effect spreads concentrically around the device, repelling harmful animals.

[0006] Patent Document 1 also describes a method of simultaneously driving away targets by linking the repelling devices after detecting the targets. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2020-74734 Summary of the Invention [Problem to be solved by the invention]

[0008] However, with Conventional Technology 1, it is difficult to reliably repel insects in the direction that the installer expects. In some cases, the technique may encourage insects to go in an undesired direction.

[0009] In other words, if a pest appears along the trajectory of the solid line X in Figure 5, the device will effectively repel it in the desired direction (forest). However, if the pest gets around the side or back of the device, as shown by the dotted line Y, the device will deliberately guide the pest in the direction that should be avoided (fields, houses, schools, etc.), which actually has the opposite effect.

[0010] Taking the above facts into consideration, the present invention aims to provide an intrusion prevention device and an intrusion prevention program that can reliably guide an intrusion target to a predetermined destination when the intrusion target approaches an area where the intrusion of the intrusion target is to be prevented, thereby preventing the intrusion. [Means for solving the problem]

[0011] Intrusion prevention device according to the present invention The first invention is an intrusion prevention device for preventing an intrusion target from invading into the first area, which is provided with a first area into which it is desired to prevent the intrusion of the intrusion target, a second area which is a final guide destination for the intrusion target, and a third area set between the first area and the second area, and for preventing the intrusion target from invading into the third area into the first area, the intrusion prevention device comprising: a monitoring device for monitoring the presence of the intrusion target in the third area; a plurality of guidance units which are installed in a dispersed manner in the third area and which issue a mechanism for guiding the intrusion target to the second area; and a monitoring device for detecting the intrusion of the intrusion target into the third area by the monitoring device. First When the intrusion target is detected, the position of the intrusion target is identified, and based on the relationship between the identified position and the first area, The guiding portion that is most suitable for keeping the intruding object away from the first area is selected, and the first and a control unit that controls the release of devices in the plurality of guiding units. A second invention of the intrusion prevention device according to the present invention is an intrusion prevention device that has a first area where it is desired to prevent intrusion of an intrusion target, a second area which is the final guide destination of the intrusion target, and a third area set between the first and second areas, and that prevents intrusion of an intrusion target that has invaded the third area back into the first area, and includes a monitoring device that monitors the presence of the intrusion target in the third area, a plurality of guidance units that are installed in a dispersed manner in the third area and that emit devices to guide the intrusion target to the second area, and a control unit that, when the monitoring device first detects that the intrusion target has entered the third area, identifies the position of the intrusion target, and based on the relationship between the identified position and the first area, selects the guidance unit that is optimal for moving the intrusion target away from the first area, and emits the device first, and also selects the guidance units sequentially depending on the position that changes as the intrusion target moves, and controls the devices to be emitted in chronological order. A third aspect of the intrusion prevention device according to the present invention is an intrusion prevention device for preventing an intrusion of an intrusion target that has entered the third area from entering the first area, which has a first area where it is desired to prevent the intrusion of an intrusion target, a second area which is the final guide destination of the intrusion target, and a third area set between the first area and the second area, and for preventing the intrusion of the intrusion target that has entered the third area from entering the first area, the intrusion prevention device comprising: a monitoring device that monitors the presence of the intrusion target in the third area; a plurality of guidance units that are dispersed in the third area and arranged with regularity within the third area and that emit mechanisms to guide the intrusion target to the second area; and a control unit that, when the monitoring device detects that the intrusion target has entered the third area, identifies in advance a guidance path from the position where the intrusion target was first detected to the second area, selects a guidance unit based on the identified guidance path, and controls the selected guidance units to be emitted in a time series linked manner.

[0012] An intrusion prevention program according to the present invention is characterized in that it causes a computer to operate as the control unit of the intrusion prevention device. [Effects of the Invention]

[0013] According to the present invention, when an intrusion target approaches an area where the intrusion of the intrusion target is to be prevented, the intrusion target can be reliably guided to a predetermined destination, thereby suppressing the intrusion. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic configuration diagram of an intrusion prevention device according to an embodiment of the present invention; [Figure 2] 2 is a plan view of the intrusion prevention device shown in FIG. 1 when it is placed at an installation location. [Figure 3] 10 is a flowchart showing the flow of pest guiding control by the intrusion prevention device according to the present embodiment. [Figure 4] FIG. 4 is a transition diagram showing a series of steps in time series when the guidance control according to the flowchart of FIG. 3 is executed. [Figure 5] FIG. 1 is a schematic diagram showing an example of a conventional device for guiding a harmful animal in the direction of escape when the harmful animal invades. DETAILED DESCRIPTION OF THE INVENTION

[0015] (Configuration of intrusion prevention device 10) FIG. 1 is a schematic diagram of an intrusion prevention device 10 according to this embodiment.

[0016] The intrusion prevention device 10 includes a guide section group 14 made up of a plurality of guide sections 12. An example of the actual installation of the guide sections 12 will be described later with reference to FIG.

[0017] Each of the guide portions 12 of the guide portion group 14 is connected to the control portion 16 .

[0018] The guiding unit 12 has a receiving function for receiving an instruction signal output from the control unit 16, and a guiding function for guiding an invading target, for example, a pest, by emitting a device that dislikes the target based on the received instruction signal. In the following description, the invading target is a pest.

[0019] The wiring connection between each of the guiding units 12 and the control unit 16 is not particularly limited, and they may be individually connected (independent connection of signal lines) as in the past, or may be connected via a wired LAN (Local Area Network). Using a wireless LAN eliminates the need for complicated wiring. In the case of a wireless connection, short-range data communication technology or the like may be used depending on the installation distance (the relative positional relationship between the control unit 16 and each of the guiding units 12).

[0020] Furthermore, various emission devices can be provided to emit the mechanism using the induction function of the induction unit 12 depending on the pest to be attracted. For example, specific gases can be emitted, sound waves (audible or ultrasonic) can be emitted, etc., but the basic principle is that the emission is concentrically and wave-like, diffusing from the center of the induction unit 12. However, this does not deny directional emission.

[0021] In the following, the transmission of sound waves will be described as an example of the activation of the device. When installing the intrusion prevention device 10 of this embodiment, a vermin-sound wave (sound pressure) table is prepared in advance, and once the intrusion prevention device 10 is installed and the vermin to be inhibited is identified, sound waves (sound pressure) appropriate for the vermin species are emitted. For example, when the vermin is a wild boar, it has been found that sound waves with a frequency of 20,000 Hz and a sound pressure of 80 dB are effective.

[0022] Also, a function may be provided to identify a vermin from an image captured by a monitoring device 18 (described later) and adjust the sound waves (and sound pressure) to be output using a vermin-sound wave (sound pressure) table.

[0023] Here, the guiding units 12 belonging to the guiding unit group 14 are a group that can operate in cooperation with each other based on instruction signals from the control unit 16, and the arrangement of each guiding unit 12 is determined within the guiding unit group 14. In other words, in this embodiment, the control unit 16 controls a single guiding unit group 14, but the control unit 16 may control multiple guiding unit groups 14. A situation in which multiple guiding unit groups 14 exist is when there is a possibility of intrusions from all directions around a first area (such as a school), and the periphery of the first area (such as a school) is divided into multiple third areas, and guiding unit groups 14 are arranged in each third area, and each guiding unit group 14 is controlled by a single control unit 16. Note that the periphery does not have to be flat, and also includes guiding unit groups 14 that target birds as intrusion targets and emit devices toward the sky or around specific trees where birds gather.

[0024] A monitoring device 18 is connected to the control unit 16. The monitoring device 18 is, for example, a camera, and in cooperation with the image analysis function of the control unit 16, identifies the presence or absence of a vermin within the photographed range and its location when present.

[0025] More specifically, when the monitoring device 18 is a camera, the control unit 16 identifies the coordinate area of ​​the vermin (the area occupied varies depending on the depth) in the pixel data of the image captured by the camera, and identifies the position of the vermin based on a predetermined pixel data-position information table. That is, as an example, if a position of 10 pixels from the top left of the image to the right and 100 pixels to the bottom is identified, the pixel data-position information table will identify the position of the vermin as 10 m in a straight line along the optical axis from the installation position of the camera, and 50 cm to the right of the center of the image.

[0026] Instead of the pixel data-location information table, a lidar sensor (not shown) may be installed alongside the monitoring device 18. In this case, when the monitoring device 18 recognizes the presence of a pest, the signal from the lidar sensor can be used to identify the relative physical distance from the monitoring device 18.

[0027] The monitoring device 18 may be an infrared sensor (including a thermal camera) as long as it can identify the location of the vermin by using image analysis or a lidar sensor in combination.

[0028] The control unit 16 recognizes in advance the arrangement of each guidance unit 12 in the guidance unit group 14, and controls the timing of outputting instruction signals to each guidance unit 12 based on the image (position of the pest) captured by the monitoring device 18.

[0029] (Installation example of intrusion prevention device 10) FIG. 2 is a plan view of an installation location where the intrusion prevention device 10 shown in FIG. 1 is placed.

[0030] As shown in FIG. 2, the guide portion group 14 constituting one group includes nine guide portions 12.

[0031] In Fig. 2, a first area 20 where it is desired to prevent the intrusion of harmful animals is a schoolyard, a privately owned field, etc., a second area 22 where harmful animals are to be repelled is a mountain forest, and a third area 24 that encourages harmful animals to be guided is set between the first area 20 and the second area 22. It is preferable to prevent harmful animals from directly invading between the first area 20 and the second area 22, for example, by using a wall or fence.

[0032] The second area 22 is an area to which pests are chased and also an area where pests live. Figure 2 shows a situation in which pests are expected to invade the first area 20, such as a field, from this second area 22 in search of food.

[0033] Therefore, in this embodiment, a third area 24 is set up to prevent pests from directly entering the first area 20 from the second area 22, and nine guidance sections 12 belonging to the same group of guidance device groups 14 are arranged in a mesh pattern (3 x 3 matrix) in the third area 24 so that the spacing between each section is approximately constant.

[0034] Meanwhile, monitoring device 18 (here, a camera) is placed in second area 22 adjacent to an inner corner of L-shaped first area 20 (such as a schoolyard or a private field), with its back to the inner corner of first area 20. This ensures that the imaging range of monitoring device 18 covers most of second area 22 (see the field of view of dashed lines AL and AR in Figure 2).

[0035] There is no particular limitation on the location where the control unit 16 is installed, but it is preferable to install it in the first area 20. In addition, any one of the multiple guiding units 12 may also have the function of the control unit 16.

[0036] 2, when the control unit 16 recognizes that a vermin has entered the third area 24 from the second area 22 by analyzing the image taken by the monitoring device 18 and identifies the location of the vermin, it selects the guiding unit 12 installed closest to the first area 20 in the direction that should not be traveled (first area 20) from the identified location (place) as the starting point, and instructs the guiding units 12 closest to the vermin to sequentially activate their traps. In this example, the vermin are repelled by emitting ultrasonic waves for convenience.

[0037] The operation of this embodiment will be described below with reference to the flowchart of FIG.

[0038] In step 100, an analysis of the image captured by the monitoring device 18 is performed, and then the process proceeds to step 102, where it is determined whether or not a vermin has been detected in the third area 24. The third area 24 is a guidance execution area.

[0039] If the determination in step 102 is negative, it is determined that there are no harmful animals to lure, and the process returns to step 100, and the above steps are repeated.

[0040] Furthermore, if a positive judgment is made in step 102, it is determined that there is a vermin that is being guided to the third area 24, i.e., that a vermin has moved from the first area 20 to the third area 24, and the process proceeds to step 104, where the location of the vermin is identified by image analysis.

[0041] The next step 106 is to determine whether the tracking of the pest has led it to any of the preset locations.

[0042] If the determination in step 106 is negative, the process returns to step 104, and tracking of the vermin continues. If the determination in step 106 is positive, the process proceeds to step 108, and a guidance unit (unit number) is selected to keep the vermin away from the first area 20. More specifically, in step 106, when the vermin reaches the pre-installed position, the guidance unit 12 installed closest to the first area 20 is selected in the direction (first area 20) that the vermin should not go, starting from the arrival position. The process proceeds to the next step 110, and a command signal is output to the selected guidance unit (unit number) to emit sound waves, and the process proceeds to step 112. The first area 20 is an area where it is desired to prevent the intrusion of vermin.

[0043] In step 112, the movement trajectory of the vermin is acquired based on the analysis image, and the process proceeds to step 114 to determine whether or not the vermin has been successfully repelled to the second area 22. The second area 22 is the destination to which the vermin is guided.

[0044] If the result of step 114 is negative, it is determined that the pest is still present in the third area 24, and the process proceeds to step 116, where the next guidance unit 12 (unit number) to emit sound waves is selected based on the movement trajectory, and the process proceeds to step 118.

[0045] In step 118, a command signal is output to the guidance unit 12 (locomotive) selected in step 116, thereby transmitting a sound wave, and the process proceeds to step 114, where the above process is repeated until the determination in step 114 is affirmative.

[0046] If a positive judgment is made in step 114, it is determined that the pest has been repelled from the third area 24 to the first area 20 (repelling has been successful), and the process proceeds to step 120, where a reset process for the intrusion prevention device 10 is performed, and the process returns to step 100.

[0047] FIG. 4 is a plan view of the situation in FIG. 2, and is a transition diagram showing the time series of the case where the guidance control according to the flowchart in FIG. 3 is put into practice.

[0048] The guiding sections 12 are identified as No. 1, No. 2, . . . , No. 9, respectively, and are represented by circled numbers in FIG.

[0049] As shown in Figure 4(A), the pest (in Figure 4, the current position is indicated by a solid star 26. Note that dotted stars indicate the area before and after the current position) appears from the top of the third area 24, and instead of descending downward, moves to the left along the trajectory of arrow A in Figure 4, then moves downward and enters the third area 24, moving around Unit 1.

[0050] The monitoring device 18 determines the location of the pest (in this example, somewhere between unit 2 and unit 3) by measuring the distance with a lidar sensor or by counting the pixels in the image to calculate the relative distance. The control unit 16 determines the guidance unit 12 located around the measured distance from the determined location of the pest (first time).

[0051] In addition, instead of using a means for identifying the location of a pest using a lidar sensor or the like as described above (hereinafter referred to as the "pest location sensor identification type"), the monitoring device 18 may detect the pest (using a thermal camera to detect a significant temperature difference from the surrounding area, or by recognizing the pest's outline using image recognition), wait for it to move to a pre-set point (in this example, approximately halfway between Units 2 and 3), and the control unit 16 may use a means for identifying the guidance unit 12 located around the measured distance based on that point (hereinafter referred to as the "specific point ambush type").

[0052] Here, either the "vermin location sensor identification type" or the "specific point ambush type" may be used, but the "vermin location sensor identification type" is more versatile as it does not limit the location where the vermin is identified. When the "vermin location sensor identification type" is applied, if the distance between the vermin and the guiding unit is too far, the guiding unit 12 may be activated after waiting for the vermin to come to a specific location.

[0053] In this case, since the guidance unit No. 3 is located in the opposite direction from the vermin with respect to the direction in which the vermin is guided and is closest to the first area 20, this No. 3 is selected.

[0054] As shown in Fig. 4(B), the control unit 16 outputs an instruction signal to Unit 3. This causes Unit 3 to emit sound waves. These sound waves startle the pests, and they then run away between Units 1 and 2 (see arrow B in Fig. 4).

[0055] Next, the monitoring device 18 identifies the location of the pest (for the second time), and the control unit 16 identifies that the guidance unit closest to the first area and located in the opposite direction from the pest in relation to the direction in which the pest is being guided is Unit No. 2.

[0056] As shown in Fig. 4(C), the control unit 16 outputs a command signal to the second unit, which then emits a sound wave. The sound wave frightens the pest, which then runs away to the right of the fourth unit (see arrow C in Fig. 4).

[0057] Next, the monitoring device 18 identifies the location of the pest (third time), and the control unit 16 identifies that the guidance unit closest to the first area and located in the opposite direction from the pest in relation to the direction in which the pest is being guided is Unit 5.

[0058] As shown in Fig. 4(D), the control unit 16 outputs an instruction signal to the unit 5. This causes the unit 5 to emit sound waves. The sound waves startle the pests, who then flee into the upper forest, which is the first area 20 (see arrow D in Fig. 4).

[0059] Finally, the monitoring device 18 identifies the location of the pest (for the fourth time), and the control unit 16 identifies that the guidance unit closest to the first area and located in the opposite direction from the pest in relation to the direction in which the pest is being guided is Unit 4.

[0060] Here, as shown in FIG. 4(E), a command signal is output to Unit 4 as a so-called "final push." ​​This causes Unit 4 to emit sound waves. These sound waves cause the pest to disappear further into the forest than the first area 20 (see arrow E in FIG. 4). In other words, the driving away by guiding the pest is completed.

[0061] As described above, according to this embodiment, the multiple guidance sections 12 belonging to the guidance section group 14 are arranged in a mesh pattern in the third area 24 set between the first area 20 and the second area 22, and by analyzing the images captured by the monitoring device 18, etc., pests that invade the third area 24 from the first area 20 are efficiently guided away from the first area 20 and into the second area 22 by the sound waves emitted in a time series.

[0062] Therefore, due to the structural characteristics of the guiding part 12, even when the effect is transmitted in a non-directional concentric circle, harmful animals can be reliably guided in the desired direction.

[0063] That is, the purpose of the intrusion prevention device 10 according to this embodiment is not to capture vermin (intruders), but to prevent them from invading an area (first area 20) where they are not desired to invade. For this reason, in the intrusion prevention device 10 according to this embodiment, operating the guiding unit 12 in a time series makes it possible to repel vermin (intruders) effectively and efficiently in a manner not possible with conventional methods, by taking advantage of the habit of vermin (intruders) to flee in a safe direction (a direction where they do not want to be caught).

[0064] Even if the harmful animal moves in an unexpected direction, the monitoring device 18 can re-identify the distance (position) and launch a so-called "wave attack" from the front to the back, thereby enabling reliable and effective guidance of the harmful animal.

[0065] In this embodiment, the monitoring device 18 is fixedly disposed, but the monitoring device 18 (monitoring device 18) does not need to be fixed, and for example, the monitoring device 18 may be attached to a drone or the like to take aerial photographs while moving within the third area 24. In this case, a single drone may be used, but by applying multiple drones and using an autonomous distributed technology (for example, Voronoi control technology) so that one of the drones always photographs the entire second area 22, it becomes possible, for example, to track each of the invading pests in a way that is specialized for each pest.

[0066] Furthermore, in this embodiment, so-called real-time operation control is performed in which the monitoring device 18 recognizes the presence of a vermin and repeatedly selects the optimal guidance unit 12 when it identifies its location. However, for example, a guidance route may be set when the location of the vermin is first identified, and the operation sequence of the guidance units 12 for the vermin to move along the set route may be determined in advance. This reduces the control burden on the control unit 16. Furthermore, if the vermin deviates from the preset route, the operation sequence of the guidance units 12 may be corrected. Note that if there are multiple guidance units 12 that satisfy the activation conditions, the multiple guidance units 12 may be activated simultaneously.

[0067] The application of this invention has been explained as targeting vermin and protecting private homes, farms, fields, and schools located on mountainsides, but in addition to these rural locations, it can also be used in places where the invasion of vermin could cause major problems, such as railway tracks and roads.

[0068] The explanation of pests assumes animals such as wild boars and deer that come down from the mountains and forests into human settlements, but it can also be used to target damage caused by pests classified as birds such as crows and starlings in urban areas.

[0069] Furthermore, the target of intrusion is not limited to the vermin shown in this embodiment, but may also be an intruder who invades a house without permission. That is, the first area to which intrusion is to be prevented is the house, the second area to which the intruder is guided is outside the premises, and the third area to which the intruder is guided is within the premises (for example, a garden or entrance), so that an intruder who invades the premises of the house can be chased away outside the premises without being allowed to enter the house.

[0070] In this embodiment, sound waves are used as a mechanism in the guiding unit 12, but other than sound waves (hearing), mechanisms using other senses such as sight, touch, smell, and taste may be used as long as they have the function of encouraging (guiding) the invading object to move as expected. Furthermore, mechanisms using multiple senses may be used in combination. [Explanation of symbols]

[0071] 10 Intrusion suppression device 12 Guidance part 14 Guidance group 16 Control Unit 18 Monitoring equipment 20 1st area 22 Second area 24 Third area

Claims

1. An intrusion prevention device for preventing an intrusion target from invading a first area, a second area to which the intrusion target is ultimately guided, and a third area set between the first area and the second area, the device being configured to prevent the intrusion target from invading the third area into the first area, a monitoring device that monitors the presence of the intrusion target in the third area; a plurality of guiding units that are installed in a dispersed manner in the third area and that emit a mechanism for guiding the intrusion target to the second area; a control unit that, when the monitoring device first detects that the intrusion target has entered the third area, identifies a position of the intrusion target, and selects the guiding unit that is optimal for moving the intrusion target away from the first area based on a relationship between the identified position and the first area, and first controls the release of devices in the plurality of guiding units; An intrusion prevention device having

2. An intrusion prevention device comprising a first area into which it is desired to prevent an intrusion of an intrusion target, a second area to which the intrusion target is ultimately guided, and a third area set between the first area and the second area, for preventing an intrusion target that has invaded the third area from invading the first area, a monitoring device that monitors the presence of the intrusion target in the third area; a plurality of guiding units that are installed in a dispersed manner in the third area and that emit a mechanism for guiding the intrusion target to the second area; When the monitoring device first detects that the intrusion target has entered the third area, the monitoring device identifies the position of the intrusion target, and based on the relationship between the identified position and the first area, selects the guidance unit that is optimal for moving the intrusion target away from the first area, and activates a device first; a control unit that sequentially selects the guiding units in response to a position that changes as the intrusion target moves, and controls the guiding units to activate mechanisms in a time series; An intrusion prevention device having

3. An intrusion prevention device comprising a first area into which it is desired to prevent an intrusion of an intrusion target, a second area to which the intrusion target is ultimately guided, and a third area set between the first area and the second area, for preventing an intrusion target that has invaded the third area from invading the first area, a monitoring device that monitors the presence of the intrusion target in the third area; a plurality of guiding units that are dispersed in the third area and arranged with regularity within the third area, and that emit a mechanism for guiding the intruding target to the second area; a control unit that, when the monitoring device detects that the intrusion target has entered the third area, specifies in advance a guide path from a position where the intrusion target was first detected to the second area, selects the guidance unit based on the specified guide path, and controls the selected guidance unit to be emitted in a time-series linked manner; An intrusion prevention device having

4. An intrusion prevention device as described in claim 3, which corrects subsequent guideways depending on the difference between the identified guideway and the actual movement trajectory of the intrusion target.

5. An intrusion suppression device as described in any one of claims 1 to 4, wherein the intrusion suppression into the first area is the intrusion target that has invaded the third area from the second area.

6. An intrusion prevention device as described in any one of claims 1 to 5, wherein the monitoring device is a detection device that can directly or indirectly obtain at least the presence or absence and location of the intrusion target.

7. An intrusion prevention device as described in any one of claims 1 to 6, wherein the induction section emits sound waves of a predetermined frequency and a predetermined sound pressure that are disliked by the pre-specified intrusion target as a mechanism.

8. A computer, The intrusion prevention device according to any one of claims 1 to 7 is operated as the control unit. Invasion control program.

Images