JP2012093834A - Detection area display device, detection area display method, detection area display program, recording medium with recorded detection area display program, and object detection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately and easily confirm, adjust, and set an arrangement state etc., of a detection area and so on by displaying the detection area which cannot be looked with naked eyes in an easy-to-see state together with an image of the circumference one over the other.SOLUTION: A detection area display device includes an imaging part 11 which images a real space and outputs a video signal; a display part 12 which makes a display based upon the video signal; a direction change quantity detection part 13 which detects a quantity of change in imaging direction by the imaging part 11; a storage part 14 which stores pieces of three-dimensional shape information on respective detection areas of the object detection device of at least one or more types respectively; and a control part 15 which forms a virtual area corresponding to three-dimensional shape information of one of the detection areas stored in the storage part 14 in a virtual space, and puts the virtual area together with the video signal after moving the virtual area in the virtual space based upon the quantity of three-dimensional change detected by the direction change quantity detection part 13.

Description

  The present invention records a detection area display device, a detection area display method, a detection area display program, and a detection area display program for displaying an invisible detection area formed by an object detection device that detects the presence or absence of a target object such as a human body. Recording medium and object detection system in particular, prior confirmation of the detection area before installation of the object detection device, support for adjustment of the detection area after installation, and customer (installation location owner, administrator, etc.) The present invention relates to a detection area suitable for explanation.

  Conventionally, a crime prevention alarm device that detects that an intruder has entered a predetermined warning area and turns on or flashes a lamp, or sounds an alarm buzzer or siren is used as a start switch. Type infrared human body detection devices are used.

  Such passive infrared human body detection devices are installed on the walls of buildings and houses, etc., with the optical system's light receiving direction oriented almost horizontally, and are generally wary of areas several meters away from the walls. The detection sensitivity of the infrared energy is adjusted so as to set the detection area to be detected. Then, the temperature difference between the background and the detection area is monitored, and it is detected that a human body has entered the detection area when the temperature of the detection area changes so as to increase.

  Furthermore, a passive infrared human body detection device configured to be able to be alerted in a wide range around the installation location and to be able to limit the maximum detection distance by making the angle of the detection area variable has already been put into practical use. .

  FIG. 10 is an external view of such a passive infrared human body detection device 100. As shown in FIG. 10, in the passive infrared human body detection device 100, the front surface of a main body 101 attached to a wall surface or the like is covered with a cover 102, and the opening at the center of the front surface of the cover 102 has a substantially semi-cylindrical shape. Lens 103 is arranged. An operation display window 104 is provided on the upper front surface of the cover 102 to make it possible to visually recognize the operation indicator lamp (not shown) indicating that a human body or the like has been detected during installation / adjustment work. Yes.

  FIG. 11 is a plan view of a detection area A100 formed by the passive infrared human body detection device 100. FIG.

  In this passive infrared human body detection device 100, the inner shape of the lens 103 is optically designed so that light can be collected from a small area in the direction of every 15 degrees (total of 13 directions) within a horizontal range of 180 degrees. Has been. In addition, an infrared light receiving unit (not shown) built in the main body 101 receives infrared rays from a range of 90 degrees horizontally, and rotates at every 15 degrees up to 45 degrees from the center in the front direction at each position. It is configured to be fixable.

  Thereby, detection area A100 which consists of seven small areas every 15 degrees is formed over the range of 90 degrees horizontally. When the infrared light receiving unit inside the main body 101 is directed to the front, as shown in FIG. 11, the detection area A100 extends over a range of 45 degrees to the left and right around the front of the passive infrared human body detection device 100. It is formed. Further, for example, when the infrared light receiving unit built in the main body 101 is rotated 45 degrees to the left with respect to the front surface and fixed, the detection area A100 covers the range of 90 degrees to the left from the front surface of the passive infrared human body detection device 100. Will be formed.

  Note that a horizontal 90 degree range is not necessarily required as the detection area A100. Rather, there may be a case where only a narrower range is desired as a warning target or a specific direction is desired to be excluded from the detection target. In such a case, for example, a masking seal or the like may be attached to a corresponding portion on the inner surface of the lens 103 to block the passage of infrared rays, thereby substantially invalidating detection of the direction.

  FIGS. 12A to 12D are side views of a detection area A100 formed by the passive infrared human body detection device 100. FIG.

  This passive infrared human body detection device 100 is provided with a mechanism (not shown) that makes the angle of the detection area A100 variable in four steps, and is set by sliding while pressing a detection distance adjustment lever (not shown). By moving to any of the positions A, B, C or D, the position can be fixed. In conjunction with these set positions, as shown in FIG. 12A to FIG. 12D in order, the maximum detection distance by the detection area A100 (normal, the same applies hereinafter) is 12 m, 8 m, 5 m, or 2 m, respectively. To be changed. For example, if there is a road or the like ahead of the detection area A100, the passive infrared human body detection device 100 may erroneously detect the vehicle or a person passing there. Such detection errors can be prevented as much as possible by setting the detection area A100 as downward as possible and setting the maximum detection distance to be in front of the road.

  The installation operator performs adjustment of the detection area A100 after the passive infrared human body detection apparatus 100 is installed as described above. However, since the detection area A100 itself cannot be directly seen with the naked eye, the installation operator determines the shape of the detection area A100 unique to each type of the passive infrared human body detection device 100 based on the plan view and the side view. It was not always easy to work with an image.

  In particular, there are trees and plants in which the arrangement of the detection area A100 of the passive infrared human body detection device 100, the maximum detection distance, and the like are variable, and the area to be alerted has a complicated shape or may cause false alarms. In some cases, it has been difficult to optimize the arrangement of the detection area A100 and the maximum detection distance.

  In addition, after the adjustment work, a walk test is required in which the worker himself or his assistant crosses the detection area A100 so as to actually block the detection area A100 and confirms the lighting of the operation display every time. If not, the cover 102 of the passive infrared human body detection device 100 must be removed and readjustment must be performed again, and the time required for adjustment could be increased.

  As with the passive infrared human body detection device 100, a surveillance camera equipped with a TV camera and a heat ray sensor has been proposed as a conventional technique that can clearly and easily confirm the position of a warning area of a heat ray sensor that cannot be seen with the naked eye. (For example, refer to Patent Document 1 and Patent Document 2).

  However, the surveillance camera described in Patent Document 1 is configured such that the angle of the television camera and the heat ray sensor is not adjusted separately, but the angle of view is always adjusted in a state in which the relative visual field always maintains a constant relationship. It is a prerequisite. The warning area of the hot-wire sensor must be narrower than the field of view of the TV camera, and the surrounding situation cannot be seen by moving only the TV camera. In the surveillance camera described in Patent Document 2, the angle of the TV camera and the heat ray sensor can be adjusted separately, but the warning area of the heat ray sensor should still be narrower than the field of view of the TV camera. Further, in the surveillance cameras described in Patent Literature 1 and Patent Literature 2, it is a precondition that the television camera and the heat ray sensor are incorporated in the same case. For example, the television camera is incorporated with a single heat ray sensor. It is difficult to apply to things that are not.

  In addition, an intrusion detection device that can install an imaging unit and a sensor unit without being restricted by relative positions and can display an actually effective detection area set by the sensor unit superimposed on an image by the imaging unit of the monitor screen. Has also been proposed (see, for example, Patent Document 3).

  If it is an intrusion detection apparatus of this patent document 3, it is thought that the ex post application is also possible by connecting to the detection output of the heat ray sensor of the surveillance camera single-piece | unit. However, in order to display an actually effective detection area superimposed on the image by the imaging unit on the monitor screen, a moving object is detected with respect to the image signal from the imaging unit when an operator is walking around the monitoring area. The marker is displayed by performing image processing and detecting the position of the worker in the image signal. On the other hand, the entire detection area cannot be displayed unless the worker walks around the monitoring area.

JP 7-23373 A Japanese Patent Laid-Open No. 7-21477 JP 2006-178515 A

  In view of such a problem of the prior art, the object of the present invention is to display a detection area such as a human body detection sensor that cannot be directly seen with the naked eye or difficult to superimpose on a surrounding image so that it can be easily viewed. To provide a detection area display device, a detection area display method, a detection area display program, and a recording medium on which the detection area display program is recorded so that confirmation, adjustment, and setting of the arrangement status and the like can be performed accurately and easily. It is.

  Furthermore, it is providing the object detection system which combined the object detection apparatus of the more suitable structure with such a detection area display apparatus.

  In order to achieve the above object, a detection area display device of the present invention is a detection area display device that displays a detection area formed by an object detection device that detects the presence or absence of a target object, and images a real space. An imaging unit that outputs a video signal, a display unit that performs display based on the video signal, a direction change amount detection unit that detects a change amount of an imaging direction by the imaging unit in three dimensions, and at least one type of the object A storage unit that stores three-dimensional shape information of each detection area of the detection device, and a virtual area corresponding to the three-dimensional shape information of any of the detection areas stored in the storage unit are formed in the virtual space. A control unit configured to move the virtual area in the virtual space based on the three-dimensional change detected by the direction change detection unit and then combine the virtual area with the video signal. And wherein the Rukoto.

  Here, it is technically possible to realize a device having these configuration requirements as a dedicated device, but a detection area display program created by the user is installed in a portable information terminal or the like having the necessary hardware configuration. It is more preferable to realize this.

  According to the detection area display device having such a configuration, a detection area such as a human body detection sensor that cannot be directly seen with the naked eye or difficult is superimposed on the surrounding video and displayed in an easy-to-view manner. Thereby, confirmation of the arrangement | positioning condition etc. of detection area A100 can be performed easily.

  The detection area display device of the present invention further includes an operation unit that can be operated by a user, and the object detection device is configured such that the arrangement of the detection area is variable, and the storage unit includes Variable arrangement information indicating how the arrangement of the detection area is variable is further stored, and the control unit changes the arrangement of the virtual area according to the operation in the operation unit based on the variable arrangement information. It is good also as a feature to do. Furthermore, the arrangement state information of the virtual area after the arrangement is changed by the control unit may be displayed on the display unit in a predetermined format.

  According to the detection area display device having such a configuration, it is possible to easily check the arrangement state of the detection area each time while changing the arrangement of the detection area and adjusting the maximum detection distance by the operation of the operation unit. This makes it possible to quickly and efficiently optimize the arrangement of detection areas and adjustment of the maximum detection distance, even when there are trees or plants that have complicated shapes or may cause false alarms in the area to be alerted. It can be carried out.

  The detection area display device of the present invention further includes an operation unit that can be operated by a user, the object detection device has at least one adjustable function, and the storage unit includes the object detection device. Adjustable function information indicating how each of the adjustable functions can be adjusted is further stored, and the control unit performs the adjustment according to an operation in the operation unit based on the adjustable function information. The possible function may be adjusted.

  In the detection area display device of the present invention, the display unit may be a touch panel that also serves as the operation unit. According to the detection area display device having such a configuration, the display becomes easy to see and the operability is greatly improved.

  Alternatively, the detection area display method of the present invention is a detection area display method for displaying a detection area formed by an object detection device that detects the presence or absence of a target object, and images a real space and outputs a video signal. An imaging step, a display step for performing display based on the video signal, a direction change amount detection step for detecting a change amount in the imaging direction by the imaging unit in three dimensions, and each detection of at least one model of the object detection device A storage step of storing each of the three-dimensional shape information of the area, and a virtual area corresponding to the three-dimensional shape information of any of the detection areas stored in the storage step are formed in the virtual space, and the virtual area is A control step of combining the video signal after moving in the virtual space based on the three-dimensional change detected by the direction change detector. The features.

  The detection area display method of the present invention further includes an operation step that can be operated by a user, and the object detection device is configured such that the arrangement of the detection area is variable, and each detection is performed in the storage step. Variable arrangement information indicating how the arrangement of the area is variable is further stored, and the control process changes the arrangement of the virtual area according to the operation in the operation process based on the variable arrangement information. It may be a feature.

  The detection area display method of the present invention further includes an operation step that can be operated by a user, wherein the object detection device has at least one adjustable function, and the storage step includes the object detection device. Adjustable function information indicating how each adjustable function can be adjusted is further stored, and the control process determines the adjustable function according to an operation in the operation process based on the adjustable function information. It is good also as adjusting.

  Or the detection area display program of this invention makes a computer perform the said detection area display method, It is characterized by the above-mentioned.

  According to the detection area display program having such a configuration, the detection area display method of the present invention can be realized anywhere as long as there is a computer environment in which the program can be executed. Further, if the detection area display program can be distributed through the Internet or a mobile phone network, the detection area display program can be obtained quickly and easily.

  Or the recording medium which recorded the detection area display program of this invention is a computer-readable recording medium, Comprising: The said detection area display program is recorded.

  According to the recording medium in which the detection area display program having such a configuration is recorded, it is easy to realize the detection area display method of the present invention in various places and environments, and the versatility of the detection area display method of the present invention. Can be increased.

  Alternatively, the object detection system of the present invention is an object detection system including an object detection device that forms a detection area for detecting the presence or absence of a target object, and a detection area display device that displays the detection area, The object detection device includes a sensor that detects the presence / absence of a target object, an arrangement change mechanism that makes an arrangement of the detection area variable, a wireless or wired first interface, and the detection area by the arrangement change mechanism. The detection area display device includes an imaging unit that images a real space and outputs a video signal, a display unit that performs display based on the video signal, and a user operation. A possible operation unit, a direction change amount detection unit that detects a change amount of the imaging direction by the imaging unit in three dimensions, and the object detection via the first interface. A storage unit for storing a second interface capable of communicating with the apparatus, three-dimensional shape information of a detection area of the object detection apparatus, and variable arrangement information indicating how the arrangement is variable; A virtual area corresponding to the three-dimensional shape information of the detection area stored in the virtual area is formed in the virtual space, and the virtual area is generated based on the three-dimensional change detected by the direction change detection unit. A second control unit configured to change the arrangement of the virtual area in accordance with an operation in the operation unit based on the variable arrangement information of the detection area after being moved in space and synthesized with the video signal, The first control unit of the detection device displays the arrangement state information of the virtual area after the arrangement is changed by the second control unit of the detection area display device. And obtained by communication through the second interface, and wherein the varying the arrangement of the detection area by the arrangement change mechanism based on the obtained result.

  In the object detection system of the present invention, the storage unit of the detection area display device indicates how the three-dimensional shape information and the arrangement of each detection area of at least one type of the object detection device are variable. Variable arrangement information is stored, and the second control unit of the detection area display device identifies the model of the object detection device by communication via the second interface and the first interface, and the identification result The three-dimensional shape information and variable arrangement information of the object detection device according to the above may be read from the storage unit and used. Alternatively, the second control unit of the detection area display device acquires the three-dimensional shape information and variable arrangement information of the detection area of the object detection device through communication via the second interface and the first interface. It is good also as storing at least temporarily in the storage part.

  According to the object detection system having such a configuration, in addition to the same effects as the detection area display device described above, if the arrangement change of the detection area or the adjustment of the maximum detection distance is completed by the operation in the operation unit, The result can be automatically reflected in the object detection apparatus. As a result, the adjustment operation of the object detection device can be performed very easily and efficiently.

  According to the detection area display device and the detection area display method of the present invention, a detection area such as a human body detection sensor that cannot be directly seen with the naked eye or is difficult to display is superimposed on the surrounding video and is easily displayed. Thereby, confirmation of the arrangement | positioning condition of a detection area, etc. can be performed easily.

  According to the detection area display program of the present invention, the detection area display method of the present invention can be realized anywhere as long as there is a computer environment in which the program can be executed. Further, if the detection area display program can be distributed through the Internet or a mobile phone network, the detection area display program can be obtained quickly and easily.

  According to the recording medium recording the detection area display program of the present invention, the detection area display method of the present invention can be easily realized in various places and environments, and the versatility of the detection area display method of the present invention is enhanced. be able to.

  According to the object detection system of the present invention, in addition to the same effects as the above-described detection area display device, if the operation of the operation unit completes the change of the arrangement of the detection area or the adjustment of the maximum detection distance, the result Can be automatically reflected in the object detection device. As a result, the adjustment operation of the object detection device can be performed very easily and efficiently.

FIG. 1A is a front view of the portable information terminal 10 according to the first embodiment of the present invention, and FIG. 1B is a rear view of the portable information terminal 10. FIG. 2 is a block diagram showing an outline of the configuration related to the present invention in the portable information terminal 10. FIG. 3 is a schematic explanatory diagram showing a case where a setting screen 12A for setting a reference distance is displayed on the touch panel 12. FIG. 4 is a schematic explanatory diagram showing a case where an adjustment screen 12B for adjusting the maximum detection distance of the detection area A100 is displayed on the touch panel 12 by changing the angle of the detection area A100. FIG. 5 shows the horizontal direction 90 ° of the detection area A100 by rotating the infrared light receiving unit built in the main body 101 of the passive infrared human body detection device 100 every 15 degrees up to 45 degrees from the center of the front direction. It is a schematic explanatory drawing which shows the case where 12 C of adjustment screens for adjusting the range of are displayed on the touch panel 12. FIG. In FIG. 6, when it is desired to exclude a specific direction from the detection target in the detection area A <b> 100, an adjustment screen 12 </ b> D for confirming which part of the inner surface of the lens 103 should be masked is displayed on the touch panel 12. It is a schematic explanatory drawing which shows the case where it exists. FIG. 7 shows an adjustment screen after the direction of the infrared light receiving unit built in the main body 101 of the passive infrared human body detection device 100 is rotated 30 degrees to the left in a place different from FIGS. It is a schematic explanatory drawing which shows the case where 12E1 is displayed on the touch panel 12. FIG. FIG. 8 is a schematic explanatory diagram showing a case where the adjustment screen 12E2 after the mobile information terminal 10 is shaken to the left from the state of FIG. FIG. 9 is an outline of an object detection system including a passive infrared human body detection device 100A capable of communicating with a portable information terminal 10A according to the second embodiment of the present invention (however, only a configuration related to the present invention is shown). It is a block diagram which shows a structure. FIG. 10 is an external view of a passive infrared human body detection device 100 according to the prior art. FIG. 11 is a plan view of a detection area A100 formed by the passive infrared human body detection device 100. FIG. FIGS. 12A to 12D are side views of a detection area A100 formed by the passive infrared human body detection device 100. FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment>
The present invention can be realized as a dedicated device, but if a device capable of operating application software created by a user is available on a portable terminal equipped with a necessary hardware configuration, it is used. It is preferable to do. This is because development and manufacture other than application software are not required, and mobile terminals that are already mass-produced and are commercially available can be obtained at a relatively low cost.

  Below, what implement | achieved by installing the detection area display program which concerns on this invention in the portable information terminal provided with the required hardware configuration, and making it run is demonstrated as 1st Embodiment.

  FIG. 1A is a front view of the portable information terminal 10 according to the first embodiment of the present invention, and FIG. 1B is a rear view of the portable information terminal 10.

  As shown in FIG. 1 (a), a vertically long rectangular shape that displays various information, images, etc. and can be touched with a fingertip at the center of the front surface of a vertically thin thin plate-shaped portable information terminal 10 with slightly rounded corners. The touch panel 12 is arranged. As shown in FIG. 1B, a camera 11 is disposed at the center of the upper back of the portable information terminal 10.

  When the portable information terminal 10 is on standby, icons 19 such as applications are arranged on the touch panel 12, and the corresponding application can be activated by touching the desired icon 19. When the application that uses the camera 11 is activated, an image captured by the camera 11 at that time is displayed on the touch panel 12.

  FIG. 2 is a block diagram showing an outline of the configuration related to the present invention in the portable information terminal 10. There is no signal line between the portable information terminal 10 and the passive infrared human body detection device 100.

  As shown in FIG. 2, the mobile information terminal 10 sets the amount of movement when the orientation of the mobile information terminal 10 itself is changed in order to change the imaging direction by the camera 11 in addition to the camera 11 and the touch panel 12 described above. How is the arrangement of the three-dimensional shape information and the detection area A100 of the detection area A100 (see FIGS. 11 and 11) such as the sensor group 13 to detect in three dimensions and the passive infrared human body detection device 100 (see FIG. 10) variable? A memory 14 that stores information (variable arrangement information) indicating whether or not and other adjustment-related information, and a control unit 15 that controls the entire portable information terminal 10.

  The camera 11 captures an actual space in which the detection area A100 of the passive infrared human body detection device 100 is formed and outputs a video signal.

  The touch panel 12 can display a video signal output from the camera 11, and transmits the touch signal and the like to the control unit 15 when a touch operation is performed with a fingertip.

  The sensor group 13 may be configured by, for example, an acceleration sensor that measures acceleration in three directions orthogonal to each other, a triaxial gyro sensor, an electronic compass, or the like. The inclination (the elevation angle) of the imaging direction by the camera 11 of the portable information terminal 10 and the change thereof can be detected more accurately by combining the acceleration sensor with the gyro sensor. The azimuth angle in the imaging direction by the camera 11 and its change can be detected by an electronic compass. That is, the amount of change in the imaging direction by the camera 11 is detected in three dimensions by the sensor group 13 as the amount of change in elevation and azimuth. However, the configuration of the sensor group 13 is not limited to this. For example, the image captured by the camera 11 is constantly or periodically monitored, and the camera 11 is based on the movement of a characteristic part in the image. The amount of change in the imaging direction due to may be detected.

  Examples of the memory 14 include, but are not limited to, a nonvolatile memory such as a flash memory and a hard disk. The memory 14 stores three-dimensional shape information of the detection area for each of various object detection devices including the passive infrared human body detection device 100. Further, information such as how the arrangement of the detection areas is variable and how to adjust them is also stored. For example, in the case of the passive infrared human body detection device 100, as described with reference to FIGS. 11 and 12, the direction of the center of the detection area A100 formed over the range of 90 degrees in the horizontal direction is the front direction. On the other hand, it can be rotated every 15 degrees up to 45 degrees each on the left and right, seven small areas within the detection area A100 can be individually masked, and the angle of the detection area A100 can be varied in four stages. The fact that the maximum detection distance becomes variable is stored.

  The control unit 15 may be a CPU, for example, but may be configured in combination with a dedicated chip for image processing or video signal processing.

  In addition, the control unit 15 displays a list of object detection devices and the like storing various information in the memory 14 on the touch panel 12, and the three-dimensional detection area of the object detection device selected by the touch operation on the touch panel 12. A virtual area corresponding to the shape information is formed in the virtual space. The virtual area formed at this time does not necessarily have a faithful three-dimensional shape using the three-dimensional shape information of the detection area as it is. For example, in the case of the passive infrared human body detection device 100, considering the visibility when actually displayed on the touch panel 12, the external shape of the projection on the ground surface of each small area of the detection area A100 is flat. A virtual area may be formed in the virtual space. Then, the control unit 15 combines this virtual area with the video signal output from the camera 11. As a result, the graphic corresponding to the virtual area is displayed on the touch panel 12 so as to be superimposed on the image of the actual space.

  Then, when the portable information terminal 10 is tilted up and down or shaken left and right, and the imaging direction of the camera 11 changes, the amount of change is detected three-dimensionally by the sensor group 13. The control unit 15 moves the virtual area in the virtual space based on the three-dimensional change amount detected by the sensor group 13. Since the graphic corresponding to the virtual area after such movement is superimposed on the image of the actual space after the change of the imaging direction and displayed on the touch panel 12, as a result, the imaging direction of the camera 11 changes. Even so, the figure corresponding to the virtual area is always superimposed and displayed at an appropriate position.

  3 to 6 are schematic explanatory diagrams of work procedures before the adjustment of the detection area A100 of the passive infrared human body detection device 100 using the portable information terminal 10.

(1) Preparation Operation etc. First, the detection area display application icon 19 is touched from the icons 19 displayed on the touch panel 12. When the detection area display application is activated, a list of model names and the like of compatible object detection devices and the like is displayed on the touch panel 12, and a model name corresponding to the passive infrared human body detection device 100 is selected from the list. touch.

  Next, the height from the ground surface of the installation location (or planned installation location) of the passive infrared human body detection device 100 and the height from the ground surface of the position where the portable information terminal 10 is held are input. At this time, the portable information terminal 10 is held immediately below or immediately above the installation location of the passive infrared human body detection device 100, and the imaging direction of the camera 11 is made to coincide with the front direction of the passive infrared human body detection device 100. . The imaging direction of the camera 11 at the time of this operation is used as a reference, and the amount of change in the imaging direction of the camera 11 thereafter is detected in three dimensions by the sensor group 13.

(2) Setting of Reference Distance FIG. 3 is a schematic explanatory diagram showing a case where a setting screen 12A for setting a reference distance is displayed on the touch panel 12. Here, it is assumed that there is a forest 20 far from this place, and a paved road 22 continues from the left front side to the right front side, and the lawn surface 21 extends between them. These scenes are displayed on the setting screen 12A slightly smaller than the naked eye.

  The setting screen 12A has four concentric virtual equidistant lines 30 with the camera 11 as the center, and the distance values (2 m, 5 m, 8 m, and 12 m) of the landscape captured by the camera 11. It is displayed superimposed on the video at a temporary initial position.

  As in the message displayed on the upper left of the setting screen 12A, if the reference distance is 4 m, for example, a mark is placed at a position exactly 4 m from the camera 11 or another worker 31 is placed. The virtual equidistant line 30 is moved up and down by a slide operation on the touch panel 12, and the position of the virtual equidistant line 30 corresponding to 4m is a mark or operator corresponding to the actual distance of 4m. Accurately overlay 31 feet. In this state, a touch operation is performed on the touch panel 12 to complete the setting of the reference distance.

  As a result, the correspondence between the position of each pixel on the image and the actual distance can be clearly understood, so that the subsequent positioning can be performed accurately when superimposed on the image on the touch panel 12 for display. Become.

  Note that the height of the place where the passive infrared human body detection device 100 is installed, the height of the position where the portable information terminal 10 is held, the vertical inclination of the imaging direction of the camera 11, and the image of the imaging optical system of the camera 11. If the angle (including optical and / or electronic scaling) and the number of pixels are all known accurately, the setting of the reference distance as described above is not indispensable. However, if some of these values are unknown or not sufficiently accurate, it is preferable to set a reference distance.

(3) Adjustment of the maximum detection distance of the detection area A100 FIG. 4 shows a case where the adjustment screen 12B for adjusting the maximum detection distance of the detection area A100 is displayed on the touch panel 12 by changing the angle of the detection area A100. It is a schematic explanatory drawing which shows. Note that the next operation performed using the adjustment screen 12B is substantially equivalent to performing the adjustment operation described with reference to FIGS. 12A to 12D on the portable information terminal 10 virtually. To do.

  As shown in FIG. 4, the adjustment screen 12B has four concentric virtual equidistant lines 30 centered on the camera 11 in the same manner as the setting screen 12A (see FIG. 3). Along with the values (2 m, 5 m, 8 m, and 12 m), the image is displayed superimposed on the landscape image captured by the camera 11. However, since the setting of the reference distance has already been completed, the display position of each virtual equidistant line 30 on the adjustment screen 12B accurately corresponds to the actual distance.

  In addition, on the adjustment screen 12B, the outline of the projection of the small areas of the detection area A100 onto the ground surface is displayed as a virtual area a100. On the upper part of the adjustment screen 12B, an indicator indicating the adjustment state of the detection area A100, setting position information of the detection distance adjustment lever, and the like are also displayed.

  Further, by performing a touch & slide operation on the touch panel 12 in the direction of the camera 11 (toward the center of the lower end of the touch panel 12) or in the opposite direction, the angle of the detection area A100 just corresponds to the slide operation of the actual detection distance adjustment lever. Is changed step by step and reflected in a virtual area in the virtual space. That is, the maximum detection distance can be adjusted by a touch and slide operation on the touch panel 12.

  According to the display of the adjustment screen 12B, there is a tree 32 that may cause a false alarm at a distance slightly beyond 8 m beyond the rightmost virtual area a100. When the maximum detection distance is 12 m (detection distance adjustment lever setting position: D), a false alarm may be generated by this tree 32, but if the maximum detection distance is 8 m (detection distance adjustment lever setting position: C) or less, It can be seen at a glance that the occurrence of misinformation due to the tree 32 can be avoided.

  If the maximum detection distance is set to 12 m and the rightmost virtual area a100 overlaps the tree 32, the touch and slide operation is performed on the touch panel 12 in the direction of the arrow X1, and the maximum detection in the normal state is performed. The distance may be changed to 8 m or less. After the maximum detection distance is changed, it is sufficiently confirmed whether each virtual area a100 displayed on the adjustment screen 12B overlaps or does not approach an obstacle other than the tree 32.

(4) Adjustment of the horizontal 90 degree range of the detection area A100 FIG. 5 shows the direction of the infrared light receiving unit built in the main body 101 of the passive infrared human body detection apparatus 100 up to 45 degrees on the left and right respectively up to the center in the front direction. It is a schematic explanatory drawing which shows the case where 12 C of screens for adjustment for adjusting the range of horizontal 90 degree | times of detection area A100 are displayed on the touch panel 12 by rotating for every degree. The next operation performed using the adjustment screen 12C substantially corresponds to performing the adjustment operation described with reference to FIG.

  As shown in FIG. 5, the adjustment screen 12C has four concentric virtual equidistant lines 30 centered on the camera 11, each of the distance values, as in the adjustment screen 12B (see FIG. 4). (2 m, 5 m, 8 m, and 12 m) are superimposed on the landscape image captured by the camera 11 and displayed. The adjustment screen 12C further displays the outline of the projection of each small area of the detection area A100 onto the ground surface as a virtual area a100. The adjustment screen 12C displays the adjustment state of the detection area A100 and the like. The indicator to show and the setting position information of the detection distance adjustment lever are also displayed.

  Further, the touch and slide operation in either the left or right direction along the virtual equidistant line 30 is performed on the touch panel 12, so that the actual direction of the infrared light receiving unit is rotated by 15 degrees (however, the front direction) (Limited to a range of up to 45 degrees on each of the left and right sides) centered on the virtual area in the virtual space. In other words, this corresponds to adjustment by rotating and moving the range of 90 degrees horizontally of the detection area A100 by a touch and slide operation on the touch panel 12.

  According to the display on the adjustment screen 12C, there is a tree 32 that may cause a false alarm at a distance slightly longer than 8 m in the diagonally right direction. Even if the normal maximum detection distance remains 12 m (detection distance adjustment lever setting position: D), if the touch and slide operation is performed in the direction of the arrow X2 on the touch panel 12 to rotate the entire detection area A100 to the left, As shown in the adjustment screen 12C, the rightmost virtual area a100 does not overlap the tree 32 when it is exactly 30 degrees from the front.

(5) Selection of a small area to be invalidated in the detection area A100 FIG. 6 shows a position on the inner surface of the lens 103 where a masking seal or the like should be pasted when it is desired to exclude a specific direction from the detection target in the detection area A100. It is a schematic explanatory drawing which shows the case where 12D for adjustment screens for confirmation are displayed on the touch panel 12. FIG. Note that the next operation performed using the adjustment screen 12D substantially corresponds to the fact that the portable information terminal 10 virtually performs what has been described in the last rewrite of the adjustment operation described with reference to FIG. .

  As shown in FIG. 6, the adjustment screen 12D has four concentric virtual equidistant lines 30 with the camera 11 as the center, as in the adjustment screen 12B (see FIG. 4). (2 m, 5 m, 8 m, and 12 m) are superimposed on the landscape image captured by the camera 11 and displayed. The adjustment screen 12D further displays the outline of the projection of each small area of the detection area A100 onto the ground surface as a virtual area a100, and the adjustment screen 12D displays the adjustment state of the detection area A100 and the like. The indicator to show and the setting position information of the detection distance adjustment lever are also displayed.

  Further, by performing a touch operation on the virtual area a100 on the touch panel 12, it is reflected in the virtual area in the virtual space as if a masking seal or the like was pasted on the inner surface of the lens 103 corresponding to the virtual area a100. ing. Specifically, the outline of the virtual area is changed to a broken line and displayed so that it can be clearly distinguished from other effective virtual areas. In other words, this corresponds to confirmation when the detection of the specific direction of the detection area A100 is substantially invalidated by a touch operation on the touch panel 12.

  According to the display of the adjustment screen 12D, there is a tree 32 that may cause a false alarm at a distance slightly longer than 8 m in the diagonally right direction. When the maximum normal detection distance is 12 m (detection distance adjustment lever setting position: D) and the entire detection area A100 is facing the front, the rightmost virtual area a100 overlaps the tree 32. End up. However, if the virtual area a100 is invalidated by performing a touch operation, the effective virtual area a100 that overlaps the tree 32 does not exist, so that it is understood that the occurrence of false information due to the tree 32 can be avoided.

  FIG. 7 shows an adjustment screen after the direction of the infrared light receiving unit built in the main body 101 of the passive infrared human body detection device 100 is rotated 30 degrees to the left in a place different from FIGS. It is a schematic explanatory drawing which shows the case where 12E1 is displayed on the touch panel 12. FIG. FIG. 8 is a schematic explanatory diagram showing a case where the adjustment screen 12E2 after the mobile information terminal 10 is shaken to the left from the state of FIG.

  As shown in FIGS. 7 and 8, a pavement 43 continues to the back in the approximate center of this place. There is a tall tree 41 on the left side of the pavement 43 along the pavement 43, and there are several buildings 40 on the right side of the pavement 43. Many cars 42 are parked in the parking space on the left side of the pavement 43. Yes.

  On the adjustment screen 12E1 in FIG. 7, the entire detection area A100 is rotated to the left, so that the tip of the leftmost virtual area a100 is off the screen, and the entire periphery of the virtual area a100 cannot be confirmed. Yes. However, in the adjustment screen 12E2 after the mobile information terminal 10 is shaken to the left from that state, the leftmost virtual area a100 is also in the screen up to the tip thereof, so all the surroundings of the virtual area a100 are confirmed. can do.

  According to the configuration of the first embodiment described above, the detection area A100 such as the passive infrared human body detection device 100 that cannot be directly seen with the naked eye is displayed on the touch panel 12 so as to be easily seen by superimposing surrounding images. . Thereby, confirmation of the arrangement | positioning condition etc. of detection area A100 can be performed easily.

  In addition, it is possible to easily check the arrangement status of the detection area A100 each time while changing the arrangement of the detection area A100 and adjusting the maximum detection distance by touch & slide operation on the touch panel 12. As a result, even when there is a tree or plant that has a complicated shape or may cause false alarms in the area to be warned, the arrangement of the detection area A100 and the optimization of the adjustment of the maximum detection distance can be performed quickly and efficiently. Can be done.

  No modification or wiring on the side of the passive infrared human body detection device 100 or the like is required, and it shows how the three-dimensional shape information and arrangement of the detection area A100 can be changed even with existing models. Since it is only necessary to understand the information, it can be used widely. Since the portable information terminal 10 is used, the portable information terminal 10 can be obtained at a relatively low cost and has excellent portability.

<Modification of First Embodiment>
In the first embodiment described above, in the memory 14, the three-dimensional shape information of the detection area A100 (see FIGS. 11 and 11) such as the passive infrared human body detection device 100 (see FIG. 10) and the arrangement of the detection area A100 are determined. In this way, information indicating whether it is variable (variable arrangement information) and other adjustment-related information are stored, but other information may also be stored. Other human body detection devices may have one or more adjustable functions in addition to the variable arrangement of detection areas. For example, detection sensitivity, a count that treats multiple detections as valid Number, operation indicator on / off, etc.

  Information (adjustable function information) indicating how each of these adjustable functions can be adjusted is stored in the memory 14, and a detection area display program on the portable information terminal 10 side is also stored correspondingly. If expanded, adjustment of each adjustable function of the human body detection device and the like can be performed by touch & slide operation on the touch panel 12 in substantially the same manner as the change in the arrangement of detection areas and the adjustment of the maximum detection distance according to the first embodiment. it can.

<Second Embodiment>
In the above-described first embodiment and its modified examples, there is no signal line or the like between the portable information terminal 10 and the passive infrared human body detection device 100 regardless of wired or wireless, or by other means. Since information is not exchanged with each other, not only the existing passive infrared human body detection device 100 but also various other detection devices can be widely used.

  On the other hand, even if the arrangement and the maximum detection distance of the detection area A100 of the passive infrared human body detection device 100 can be appropriately adjusted on the portable information terminal 10 by the work procedure described with reference to FIGS. Actually, after that, an installation worker or the like again rotates the direction of the infrared light receiving unit built in the main body 101 with respect to the passive infrared human body detection device 100, or puts a masking seal or the like on the inner surface of the lens 103. Or having to slide the detection distance adjustment lever.

  A second embodiment that can solve these problems will be described below. Since the second embodiment is the same as the first embodiment except for the points described below, the same components will be denoted by the same reference numerals, and differences will be mainly described.

  FIG. 9 shows an object detection system 60 including a passive infrared human body detection device 50 that can communicate with a portable information terminal 10A according to the second embodiment of the present invention (however, only a configuration related to the present invention is shown). It is a block diagram which shows schematic structure.

  As shown in FIG. 9, the portable information terminal 10 </ b> A also includes an interface 16 that was not found in the portable information terminal 10 (see FIG. 2). However, although this interface 16 was originally provided in the portable information terminal 10, it is not used in the first embodiment, and therefore the illustration and description in FIG. 2 can be omitted. The portable information terminal is provided with a plurality of types of interfaces capable of communicating with the outside. An appropriate one of these may be selected and used as the interface 16.

  The control unit 15A is basically the same in hardware configuration as the control unit 15 (see FIG. 2), but the control content is partially different from the control unit 15.

  The passive infrared human body detection device 50 is portable via the light receiving unit 51 that forms a detection area for detecting an intruder and the like, the area arrangement changing unit 52 that makes the arrangement of the detection area variable, and the interface 16. An interface 53 that communicates with the information terminal 10A and a controller 54 that controls them are provided.

  Unlike the infrared light receiving unit of the passive infrared human body detection device 100, the light receiving unit 51 electrically divides the light receiving surface corresponding to each of the small areas constituting the detection area and outputs separate light reception signals. Make up. Whether to use or ignore each received light signal can be determined by the controller 54 side. Thereby, when changing the horizontal range of a detection area, it is not necessary to rotate an infrared rays light receiving unit like the passive infrared human body detection apparatus 100. FIG. Even when it is desired to exclude a specific direction from the detection target, it is not necessary to attach a masking seal or the like to a corresponding portion on the inner surface of the lens 103 like the passive infrared human body detection device 100.

  The area arrangement changing unit 52 allows the controller 54 to control a mechanism for changing the angle of the detection area. The mechanism is driven by a motor or an actuator instead of a slide operation of the detection distance adjustment lever by the user. To do.

  In the first embodiment, the user has to select and touch the model name from a list of model names of compatible object detection devices displayed on the touch panel 12 after the detection area display application is activated. In the second embodiment, the portable information terminal 10 </ b> A can automatically identify the model name by communicating with the passive infrared human body detection device 50.

  Further, in the memory 14, as in the first embodiment, the three-dimensional shape information of the detection area and the arrangement thereof are variable for each of various object detection devices, and how to adjust them. The information may be stored. Alternatively, these pieces of information may be acquired each time through communication with the passive infrared human body detection device 50 and only temporarily stored in the memory 14.

  Adjustment operations such as the arrangement of detection areas and the maximum detection distance of the passive infrared human body detection device 50 on the screen of the portable information terminal 10A can be performed in the same manner as in the first embodiment. After the adjustment work is completed, the result information and the like are transmitted from the portable information terminal 10A to the passive infrared human body detection device 50.

  In the passive infrared human body detection device 50, the controller 54 changes the maximum detection distance of the detection area by the area arrangement changing unit 52 based on the result received from the portable information terminal 10 </ b> A. The detection area arrangement change information is reflected in the subsequent control of the controller 54.

  According to the configuration of the second embodiment described above, in addition to the same effects as the first embodiment, if the arrangement of the detection area and the maximum detection distance can be appropriately adjusted on the portable information terminal 10, the result is obtained. This can be automatically reflected in the passive infrared human body detection device 50. As a result, the adjustment work of the passive infrared human body detection device 50 can be performed extremely easily and efficiently.

  In the second embodiment, it goes without saying that the information stored in the memory 14 may be increased and the detection area display program may be expanded as in the modification of the first embodiment.

<Other embodiments>
In the above-described first embodiment, its modification, and the second embodiment, the detection area display program according to the present invention is installed in a portable information terminal having a necessary hardware configuration, and the detection area display program is executed. Although the present invention has been realized by this, of course, the present invention can also be realized as a dedicated device.

  When the present invention is realized in this way, it is possible to make up for a point that the performance is slightly insufficient in a portable information terminal that is easily available. For example, the detection of changes in the azimuth angle is slightly slower with an electronic compass, but using a higher-performance sensor instead improves the tracking of the display position of the virtual area when the imaging direction is changed quickly. Can do.

  The detection area display program may be recorded on a computer-readable recording medium. Examples of the recording medium include, but are not limited to, a flexible disk, a CD-ROM, a DVD-ROM, and a flash memory.

  The present invention can be applied not only when the detection area cannot be directly seen with the naked eye, but also when the detection area or the like is not impossible but cannot be seen with the naked eye. Further, although it can be seen to some extent with the naked eye, it can also be applied to a case where it is desired to display more easily or clearly.

  It should be noted that the present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-mentioned embodiment is only a mere illustration in all points, and should not be interpreted limitedly. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Portable information terminal 10A Portable information terminal 11 Camera 12 Touch panel 12A Setting screen 12B Adjustment screen 12C Adjustment screen 12D Adjustment screen 12E1 Adjustment screen 12E2 Adjustment screen 13 Sensor group 14 Memory 15 Control unit 15A Control unit 16 Interface 19 Icon 20 Forest 21 Lawn surface 22 Pavement road 30 Virtual equidistant line 31 Worker 32 Tree 40 Building 41 Tree 42 Car 43 Pavement road 50 Passive infrared human body detection device 51 Light receiving unit 52 Area arrangement changing unit 53 Interface 54 Controller 60 Object Detection system 100 Passive infrared human body detection device 101 Main body 102 Cover 103 Lens 104 Operation display window A100 Detection area a100 Virtual area

Claims (13)

A detection area display device that displays a detection area formed by an object detection device that detects the presence or absence of a target object,
An imaging unit for imaging a real space and outputting a video signal;
A display unit for performing display based on the video signal;
A direction change amount detection unit that detects a change amount of the imaging direction by the imaging unit in three dimensions;
A storage unit for storing three-dimensional shape information of each detection area of at least one model of the object detection device;
A virtual area corresponding to the three-dimensional shape information of any of the detection areas stored in the storage unit is formed in the virtual space, and the virtual area is detected by the direction change amount detection unit. And a control unit that synthesizes the video signal after moving in the virtual space based on the detection area. In the detection area display device according to claim 1,
It further includes an operation unit that can be operated by the user,
The object detection device is configured such that the arrangement of the detection area is variable,
The storage unit further stores variable arrangement information indicating how the arrangement of each detection area is variable,
The control unit changes the arrangement of the virtual area according to an operation in the operation unit based on the variable arrangement information. In the detection area display device according to claim 2,
The detection area display device, wherein the arrangement state information of the virtual area after the arrangement is changed by the control unit is displayed in a predetermined format on the display unit. In the detection area display device according to claim 1,
It further includes an operation unit that can be operated by the user,
The object detection device has at least one adjustable function;
The storage unit further stores adjustable function information indicating how each adjustable function of the object detection device can be adjusted,
The said control part adjusts the said adjustable function according to operation in the said operation part based on the said adjustable function information, The detection area display apparatus characterized by the above-mentioned. In the detection area display device according to any one of claims 2 to 4,
The detection area display device, wherein the display unit is a touch panel that also serves as the operation unit. A detection area display method for displaying a detection area formed by an object detection device that detects the presence or absence of a target object,
An imaging process of imaging a real space and outputting a video signal;
A display process for performing display based on the video signal;
A direction change amount detecting step of detecting a change amount of an image pickup direction by the image pickup unit in three dimensions;
A storage step of storing three-dimensional shape information of each detection area of at least one type of the object detection device;
A virtual area corresponding to the three-dimensional shape information of any of the detection areas stored in the storage step is formed in the virtual space, and the virtual area is converted into the three-dimensional change detected by the direction change detector. And a control step of combining the video signal after moving in the virtual space on the basis of the detection area display method. In the detection area display method according to claim 6,
It further includes an operation process that can be operated by the user,
The object detection device is configured such that the arrangement of the detection area is variable,
In the storage step, variable arrangement information indicating how the arrangement of each detection area is variable is further stored,
The detection area display method, wherein the control step changes the arrangement of the virtual area in accordance with an operation in the operation step based on the variable arrangement information. In the detection area display method according to claim 6,
It further includes an operation process that can be operated by the user,
The object detection device has at least one adjustable function;
In the storing step, adjustable function information indicating how each adjustable function of the object detection device can be adjusted is further stored.
The detection area display method, wherein the control step adjusts the adjustable function according to an operation in the operation step based on the adjustable function information.   The detection area display program which makes a computer perform the detection area display method of any one of Claims 6-8.   The recording medium which recorded the detection area display program of Claim 9. An object detection device that forms a detection area for detecting the presence or absence of a target object; and
An object detection system comprising a detection area display device for displaying the detection area,
The object detection device includes:
A sensor for detecting the presence or absence of a target object,
An arrangement changing mechanism for changing the arrangement of the detection area;
A wireless or wired first interface;
A first control unit that varies the arrangement of the detection areas by the arrangement changing mechanism;
The detection area display device
An imaging unit for imaging a real space and outputting a video signal;
A display unit for performing display based on the video signal;
An operation unit that can be operated by the user;
A direction change amount detection unit that detects a change amount of the imaging direction by the imaging unit in three dimensions;
A second interface capable of communicating with the object detection device via the first interface;
A storage unit for storing three-dimensional shape information of the detection area of the object detection device and variable arrangement information indicating how the arrangement is variable;
A virtual area corresponding to the three-dimensional shape information of the detection area stored in the storage unit is formed in the virtual space, and the virtual area is based on the three-dimensional change detected by the direction change detection unit. A second control unit that synthesizes the video signal after moving in the virtual space, and changes the arrangement of the virtual area according to an operation in the operation unit based on the variable arrangement information of the detection area;
The first control unit of the object detection device transmits the virtual area arrangement state information after the arrangement is changed by the second control unit of the detection area display device via the first interface and the second interface. An object detection system characterized in that the detection area is obtained by performing communication and the arrangement of the detection area is varied by the arrangement change mechanism based on the acquisition result. The object detection system according to claim 11.
The storage unit of the detection area display device stores three-dimensional shape information of each detection area of at least one type of the object detection device and variable arrangement information indicating how the arrangement is variable. And
The second control unit of the detection area display device identifies a model of the object detection device by communication via the second interface and the first interface, and the three-dimensional of the object detection device according to the identification result An object detection system, wherein shape information and variable arrangement information are read from the storage unit and used. The object detection system according to claim 11.
The second control unit of the detection area display device acquires and stores the three-dimensional shape information and variable arrangement information of the detection area of the object detection device by communication via the second interface and the first interface. An object detection system characterized by storing at least temporarily in a unit.

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