JP4764089B2 - Portable exploration device - Google Patents

Description

  The present invention relates to a direction finding device that searches for a direction of a radio wave emission source such as an illegal radio wave generation source or unnecessary radiation, and more particularly to a direction finding device having a portable structure.

  Conventionally, in order to search and visualize radio wave emission sources (wave sources) such as illegal radio waves and unnecessary radiation, a direction finding device has been used. As a general method of direction search (direction search), a method is known in which a radio wave is received by a directional array antenna, and a wave source image is generated and visualized based on the principle of holography using the received radio wave. It has been.

  The conventional direction finding device can estimate the wave source by measuring the radio wave with the directional antenna pointing toward the object that seems to be the wave source, and generating and displaying the wave source image, but the wave source image is simply the source of the wave source. It only indicates the radio wave intensity, and it is not easy to grasp an object (for example, a building) from which radio waves are emitted. Therefore, take the camera with the array antenna device, estimate the wave source with the direction finding device, shoot the environment that seems to be the wave source with the camera, and synthesize the wave source image and the image shot with the camera, The technique of specifying is also used.

However, it is necessary to transport the antenna device and the camera separately, and it takes time to set the positions of the antenna device and the camera and the shooting direction of the camera. Further, the antenna device has a drawback that it is difficult to carry because of its relatively heavy weight. Examples of the portable antenna include a portable satellite communication device as described in Patent Document 1 and a portable GPS measurement device as described in Patent Document 2.
JP-A-8-335888 Japanese Patent Laid-Open No. 11-30660

  In the case of using a camera in a conventional direction finding device, there is an inconvenience that work efficiency is poor because it takes time to carry the antenna device and the camera separately, to set the position of the antenna device and the camera, and to set the shooting direction of the camera. was there. There are also portable antennas as described in Patent Documents 1 and 2, but no consideration is given to the camera.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a convenient portable searching device that integrates an antenna device that searches for a radio wave emission source and a camera that captures an environment considered to be a radio wave emission source.

Portable hand probe device of the present gun invention, there can be opened and closed has a front portion and a rear portion, a container fitted with a rotatable pivot member in the circumferential direction along at least a horizontal surface on the bottom portion; A planar antenna device mounted in a substantially vertical direction on a front surface of the container for searching for a radio wave emission source; and on the antenna device of the container so that a lens axis is substantially orthogonal to a vertical surface of the antenna device. A camera that is disposed integrally and is rotatable at least in a predetermined angle range in the elevation direction and that captures the environment of the portion estimated to be the radio wave emission source; and processes a signal received by the antenna device Including a signal processing unit and a circuit configuration unit disposed in the container.

  According to the present invention, by integrating the antenna device and the camera in a container (container), the portable searching device is excellent in portability and can easily adjust the azimuth and elevation when searching for a radio wave emission source. Can be provided.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  First, with reference to FIG. 1, an example of an electrical circuit component of the direction finding device of the present invention and an image of the direction finding result will be described. The direction finding device of the present invention uses an antenna device 10 and a camera 20. As shown in FIG. 1, the direction finding device 100 includes an antenna device 10, an antenna switching portion 13, receiving portions 14 and 15, frequency conversion. A unit 16, a signal processing unit 17, a display unit 18, and a camera 20.

  The antenna device 10 includes a reference antenna 11 and an array antenna 12. The array antenna 12 is two-dimensionally (for example, 6 × 6) antenna elements (for example, dipole antennas) 121 in a vertical and horizontal direction on a plane. ˜12n, the reference antenna 11 and the array antenna 12 can receive the same frequency band. In addition, any one of the antenna elements 121 to 12n can be used as the reference antenna 11.

  Radio waves received by the reference antenna 11 are supplied to the first receiving unit 14, and radio waves received by the array antenna 12 are sequentially switched and selected by the antenna switching unit 13 and supplied to the second receiving unit 15. The radio waves received by the receivers 14 and 15 are converted to an intermediate frequency (IF frequency) by the frequency converter 16.

  The signal after the frequency conversion is processed by the signal processing unit 17, and the received signals from the antenna elements selected by the reference antenna 11 and the array antenna 12 are A / D converted by simultaneous sampling, digitized, and digitized data. Is processed. By this calculation process, the arrival direction of the radio wave is estimated to generate an image showing the wave source (hereinafter referred to as a wave source image) and displayed on the display unit 18.

  In the generation of the wave source image, information on a phase difference between a signal received by the array antenna 12 and a signal selected by sequentially switching the signal by the antenna switching unit 13 and a signal received by the reference antenna 11 is used. The frequency spectrum of the signal received by the array antenna 12 is analyzed, the intensity for each frequency of the signal received by each receiving unit is analyzed, and the frequency of the received signal is estimated. Further, the position of a radio wave generation source is estimated and visualized by a radio holography method, a MUSIC method, or the like. There are various methods for searching for a method such as a radio holography method, but the details are omitted.

  When the arrival direction estimation result is colored into the estimated radio wave intensity for each azimuth angle and elevation angle and displayed in a two-dimensional image on the display unit 18, a wave source image 181 in which the arrival direction of the radio wave is visualized as shown in FIG. 1 can be displayed.

  When the direction of arrival of radio waves is visualized, an object presumed to be a radio wave emission source is photographed by the camera 20 so that the camera image and the wave source image can be displayed in an overlapping manner. For example, as shown in FIG. 1, the camera 20 is attached to the antenna device 10, and the camera image captured by the camera 20 and the above-described wave source image are combined by the signal processing unit 17 and superimposed on the display unit 18. Thereby, the wave source image 181 and the camera image 182 can be displayed in an overlapping manner, and the position of the radio wave generation source can be easily confirmed.

  Next, the structure of the portable direction finding device of the present invention will be described with reference to FIGS. FIG. 2 is a perspective view illustrating the internal configuration, and FIGS. 3A, 3B, and 3C are a front view, a side view, and a rear view, respectively.

  As shown in FIG. 2, in the direction finding device 100, the antenna device 10 and the camera 20 are housed in a portable container 30. The container 30 is a Boston bag type, is a container that can be opened and closed by connecting a front surface portion and a back surface portion with a hinge 31, and has a handle 32 for opening and closing. In FIG. 2, the container 30 is displayed in a translucent manner in order to easily explain the structure of the contents of the container 30.

  Furthermore, a caster (leg cart) 33 that enables the container 30 to rotate in the circumferential direction and an adjuster 34 (see FIG. 3) that can adjust an inclination angle (elevation angle) are attached to the bottom of the container 30. The caster 33 is, for example, a rotating member that is rotatable around the entire circumference, and is capable of rotating the entire container 30 in which the antenna device 10 is installed in the circumferential direction along a horizontal plane, and has, for example, a spherical structure.

  The antenna device 10 has a planar shape, is attached to the front surface of the container 30 in a substantially vertical direction, is covered with a case 35, and is directed so that the antenna device 10 faces a radio wave emission source (not shown). The orientation of the container 30 can be adjusted.

  Further, inside the container 30, circuit components such as a power supply device (battery) 36 and a signal processing unit 37 are attached to the back surface thereof, and cooling means 38 is provided on the side surface of the back surface portion. For the heat radiation inside the container 30, the cooling means 38 is provided with a heat radiation window that can be opened and closed on the container wall surface, for example, and a blower or the like is installed to promote heat radiation. Further, an open type heat radiating window having an armor door or a labyrinth structure may be used. The cooling means 38 is not limited to the side surface of the container 30 and may be provided on the container peripheral surface such as the top surface, the bottom surface, and the back surface.

  Further, another electrical component 39 is attached to the side surface of the front portion of the container 30. Since the power supply device 36 is a relatively heavy component, the heavy component is disposed on the bottom surface in order to maintain the stability of the container 30. In addition, a handle 41 for transportation is provided at the upper part of the container 30, and a connector 42 is provided on the back side for connection with an external device. Refer to FIG.

  Further, the display device 18 shown in FIG. 1 may be connected to the container 30 via the connector 42, or the display device 18 may be disposed in the container 30 if there is a space.

  On the other hand, the camera 20 is disposed on the case 35 of the antenna device 10, and is attached so that the camera lens 201 can be seen through a window 43 provided on the front surface of the container 30. As shown in FIG. 3A, the window 43 has a shape that is long in the vertical direction (vertically long), and the camera 20 is mounted so that the lens axis is substantially orthogonal to the vertical plane of the antenna device 10. The camera 20 is supported by an angle adjustment mechanism 44 so that the camera 20 can be rotated in a predetermined range in the elevation angle direction.

  Next, the operation of the portable direction finding device 100 of FIGS. 2 and 3 will be described with reference to FIGS. 4 and 5.

  FIG. 4 shows a state where the container 30 is rotated in the circumferential direction and the antenna device 10 and the camera 20 are directed toward the radio wave generation source. Since the caster 33 is provided in the bottom part of the container 30, the container 30 can be rotated to the circumferential direction along a horizontal surface. The circumferential direction refers to a circumferential direction around the axis y, where y is the vertical axis when the container 30 stands on the ground, and is used to detect the direction of the radio wave source. It means the azimuth (Azimuth) direction.

  FIG. 5 shows a state in which the camera 20 is adjusted in the elevation direction. Since the camera 20 is supported on the antenna device 10 by an angle adjusting mechanism 44 so as to be able to rotate in a predetermined angle range in the elevation direction (Elevation), the rotation angle in the azimuth direction of the container 30 and the camera 20 The antenna device 10 and the camera 20 can be directed in an arbitrary direction by adjusting the rotation angle in the elevation direction.

  Further, the container 30 can be rotated by a predetermined angle in the elevation direction as indicated by a chain line in FIG. 5 by adjusting the adjuster 34 provided at the bottom. In this case, there is a possibility of falling out of balance, so that it is preferable not to rotate beyond a predetermined angle. On the other hand, since the camera 20 rotates in the elevation angle direction, the window 43 provided on the front surface of the container 30 may have a vertically long shape as shown in FIG. For this reason, the size of the window 43 can be reduced.

  The camera 20 may be rotatable in the azimuth direction. However, since the shape of the window 43 needs to be increased, the camera 20 may be rotated at least in the elevation direction. Further, since the antenna device 10 has a wide angle of view and sufficient resolution, the search in the azimuth direction can be handled by rotating the container 30 itself at least in the circumferential direction.

  Next, another embodiment of the portable direction finding device of the present invention will be described with reference to FIGS.

  FIG. 6 is a side view of another embodiment of the portable direction finding device, and shows the configuration of the antenna device 10 and the camera 20 in the container 30. That is, the antenna device 10 needs to be directed to the radio wave emission source, but generally, the radio wave emission source is often located at a high position such as a building, and therefore, the radio wave reception surface of the antenna device 10 is set to the vertical axis y. It is offset in advance and tilted by a predetermined angle α and attached in the container 30 (case 35).

  In this case, the camera 20 is also offset upward, is attached at an angle α with respect to the horizontal plane, and is supported by the angle adjustment mechanism 44 so that it can be rotated in a predetermined range x in the elevation angle direction.

  In the embodiment of FIG. 6, since the antenna device 10 is attached in advance with an upward offset, adjustment of the direction to the radio wave emission source is facilitated. In addition, since the camera 20 is also offset, it is easier to adjust the elevation angle toward the rooftop of the building than when photographing the ground direction.

  FIG. 7 is a side view showing another embodiment of the portable direction finding device of the present invention. In this example, the camera 20 is shown as an upper part of the antenna device 10 and integrally attached to the outer upper surface of the container 30. Also in this case, the camera 20 is supported by the angle adjusting mechanism 44 so that it can be rotated in a predetermined range x in the elevation angle direction. This example is effective when there is no space for accommodating the camera 20 in the container 30.

  8 and 9 are side views showing another embodiment of the portable direction finding device of the present invention. In FIG. 8, the container 30 can be tilted by a predetermined angle β with respect to the vertical axis y by an angle adjusting mechanism such as an adjuster 34. In this case, the inclination angle of the container 30 can be continuously rotated by the adjuster 34, but if the angle is excessively inclined, there is a concern that the container 30 may fall down. Is provided.

  The embodiment of FIG. 9 is also configured such that the container 30 can be tilted by a predetermined angle β with respect to the vertical axis y. In this case, the container 30 is intermittently set at a predetermined angle within the range of the angle β. A multi-stage angle adjusting mechanism 46 is provided so that the inclination angle can be adjusted in multiple stages.

  As described above, in the direction finding device of the present invention, the antenna device and the camera are integrated into the container (container) so that the portable device can be easily carried and the azimuth angle is mainly adjusted when searching for the radio wave emission source. The container is rotated by rotating the container in the circumferential direction, and the adjustment in the elevation angle direction when photographing the wave source is mainly performed by rotating the camera in the elevation angle direction. Therefore, the adjustment is easy and the mechanism can be simplified.

  The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the claims. For example, the example having the offset angle described in FIG. 6 may be combined with the example having the angle adjustment mechanism in FIGS.

  As a further application, by obtaining information on the angle of the camera to the antenna device and information on the offset angle, the position when the antenna direction finding information (wave source image) and the camera image information are superimposed based on such information. It can also be used together.

  In addition, if the size and mass of the signal processing unit is large and it is difficult to store the signal processing unit integrally in the container, prepare another portable container and electrically connect them with a cable or the like. May be used.

The block diagram explaining the electrical circuit structure of the direction finding apparatus of this invention. The perspective view which shows the whole structure of one Embodiment of the portable method search apparatus of this invention. The front view, the side view, and the rear view of the portable type searching device of this invention. The top view explaining operation | movement of the portable method search apparatus of this invention. The side view explaining operation | movement of the portable method search apparatus of this invention. The side view which shows other embodiment of the portable method search apparatus of this invention. The side view which shows other embodiment of the portable method search apparatus of this invention. The side view which shows another embodiment of the portable method search apparatus of this invention. The side view which shows another embodiment of the portable method search apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Antenna apparatus 11 ... Reference antenna 12 ... Array antenna 18 ... Display apparatus 20 ... Camera 201 ... Camera lens 30 ... Container (container)
31 ... Hinge 32 ... Handle 33 ... Caster 34 ... Adjuster 35 ... Case 36 ... Battery (power supply)
37 ... Signal processing unit 38 ... Cooling means 39 ... Electrical component 41 ... Handle 42 ... Connector 43 ... Window 44 ... Angle adjustment mechanism 45 ... Angle regulating device 46 ... Multi-stage angle adjustment mechanism

Claims (8)

A container having a front surface portion and a back surface portion, openable and closable, and attached to a bottom surface portion at least along a horizontal plane and rotatable in a circumferential direction;
A planar antenna device mounted in a substantially vertical direction on the front surface of the container to search for a radio wave emission source;
The lens axis is integrally disposed on the antenna device of the container so that the lens axis is substantially orthogonal to the vertical plane of the antenna device, and is rotatable at least within a predetermined angle range in the elevation angle direction and is estimated as the radio wave emission source. A camera for shooting the environment of the
And a circuit configuration unit disposed in the container including a signal processing unit for processing a signal received by the antenna device. Portable hand probe apparatus according to claim 1, wherein the vertical plane is offset by a predetermined angle in the elevation direction that attached to the container of the antenna device. The camera, predetermined angular offset to portable hand probe apparatus according to claim 1 or 2, wherein the attached integrally to the container in the elevation direction with respect to the horizontal plane. Wherein placing the camera in the container, I probe portable hand according to claim 1, characterized in that mounted on the antenna device rotatably within a predetermined angle range in the least elevation device. Wherein said container antenna device and the camera is attached, probe portable hand according to claim 1, characterized in that an angle adjustment mechanism which is rotatable within a predetermined angular range in the elevation direction device. The portable angle searching device according to claim 5 , wherein the angle adjusting mechanism includes an intermittent mechanism in which the container is rotatable in multiple steps in the elevation angle direction within the predetermined angle range. The circuit unit is portable side probe device according to claim 1, characterized in that it comprises a battery disposed on the bottom surface of the container. An image based on signals processed by the signal processing unit, probe portable hand according to claim 1, characterized in that provided integrally with a display capable of displaying device and an image taken by the camera on the container device .

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