JP6268265B1 - Radar function learning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change the beam shape of an ultrasonic beam emitted from an ultrasonic sensor from a pencil beam to a fan beam, and to make it easy to understand the actual apparatus of the radar apparatus. It is a problem to provide a function learning device. A radar function learning device according to an embodiment applies an ultrasonic beam emitted from an ultrasonic sensor to a target and receives the reflected wave, thereby determining the position of the target in a radar scope. To display. The radar function learning device 1 includes a support arm 8 that supports the ultrasonic sensor 2 in a state in which the ultrasonic beam emitted from the ultrasonic sensor 2 is directed in the vertical direction, and radiation of the ultrasonic beam emitted from the ultrasonic sensor 2. And a reflecting member that is disposed in the direction and reflects the ultrasonic beam in the horizontal direction. The reflecting member has a curved reflector 7 that changes the beam shape of the ultrasonic beam emitted from the ultrasonic sensor 2 from a narrow-angle beam to a wide-angle beam. [Selection] Figure 1

Description

  Embodiments described herein relate generally to a radar function learning apparatus.

  Conventionally, a device (training device) for learning the radar function has been used. In an actual radar device actually used in the field such as an airport monitoring radar, a radio wave is radiated from an antenna into a space, and the radio wave is applied to a target such as an aircraft to receive a reflected wave of the radio wave. At this time, the distance and direction are detected from the round trip time of the radio wave and the directivity characteristics of the antenna, and the position of the target is measured.

  Instead of radiating radio waves from an antenna into space in the actual radar device, the conventional radar function learning device uses an ultrasonic beam for use in a classroom, for example. In the conventional radar function learning apparatus, the ultrasonic beam is a pencil beam, and the beam shape is different from the fan beam of the primary radar actually used in the field such as airport monitoring radar. The beam shape of the pencil beam is a narrow-angle beam having a narrow elevation angle direction and a narrow azimuth direction, and the fan beam shape is a wide-angle beam spreading in the elevation angle direction.

  In the conventional radar function learning device, the beam shape of the primary radar fan beam actually used in the actual radar device is different from the beam shape, so that the learning in the radar function learning device is different from the actual operation of the radar device. It becomes. Therefore, in the conventional radar function learning device, it is difficult to understand the actual device of the radar device, and it is desired that the actual device of the radar device can be easily understood by learning in the radar function learning device.

  In addition, in order to change the beam shape of the ultrasonic beam from the pencil beam to the fan beam, a method of changing the ultrasonic sensor to one that can emit a wider ultrasonic wave, or the ultrasonic sensor in series in the vertical direction There are methods such as arranging multiple. However, when an ultrasonic sensor that can emit a wide ultrasonic wave is used, there is a problem that the ultrasonic sensor becomes expensive. Further, when a plurality of ultrasonic sensors are arranged in series in the vertical direction, complicated arithmetic processing such as combining data of a plurality of ultrasonic sensors is required. Therefore, in this case as well, the entire system of the radar function learning apparatus may be expensive.

  The problem of the embodiment is that it is possible to easily change the beam shape of the ultrasonic beam emitted from the ultrasonic sensor from the pencil beam to the fan beam, and to easily understand the actual apparatus of the radar device. It is to provide a learning device.

  The radar function learning apparatus of the embodiment displays the position of the target on the display unit of the monitor by applying the ultrasonic beam emitted from the ultrasonic sensor to the target and receiving the reflected wave of the ultrasonic beam. To do. The radar function learning device includes: a support unit that supports the ultrasonic sensor in a state in which the ultrasonic beam emitted from the ultrasonic sensor is directed in a vertical direction; and a radiation direction of the ultrasonic beam emitted from the ultrasonic sensor. And a reflection member that reflects the ultrasonic beam in a horizontal direction. The reflecting member changes the beam shape of the ultrasonic beam emitted from the ultrasonic sensor from a narrow-angle beam having a narrow expansion angle of the ultrasonic beam to a wide-angle beam having a wider expansion angle than the narrow-angle beam. It has a curved reflector to be changed.

FIG. 1 is a schematic configuration diagram of the entire radar function learning apparatus according to the first embodiment. FIG. 2 is a perspective view illustrating a schematic configuration of a main part of the radar function learning device according to the first embodiment. FIG. 3 is a side view illustrating a schematic configuration of a main part of the radar function learning device according to the first embodiment. FIG. 4 is a front view illustrating a schematic configuration of a main part of the radar function learning device according to the first embodiment. FIG. 5 is a flowchart for explaining the operation of the radar function learning apparatus according to the first embodiment.

  1 to 5 show a first embodiment. FIG. 1 is an overall schematic configuration diagram of a radar function learning apparatus 1 according to the present embodiment. FIG. 2 is a perspective view illustrating a schematic configuration of a main part of the radar function learning device 1. FIG. 3 is a side view showing a schematic configuration of a main part of the radar function learning device 1. FIG. 4 is a front view illustrating a schematic configuration of a main part of the radar function learning device 1. FIG. 5 is a flowchart for explaining the operation of the radar function learning apparatus according to the first embodiment.

  The radar function learning apparatus 1 of the present embodiment includes an ultrasonic sensor 2 that mainly transmits and receives ultrasonic waves, a pulse radar experiment unit 3, a control unit 4, and a radar scope (display unit) 5. The ultrasonic sensor 2 is attached in the state inserted in the cylindrical support cylinder (sensor holding | maintenance part) 6 as shown in FIGS. The support cylinder 6 is arranged with the center line O of the cylinder directed in the vertical direction. The ultrasonic sensor 2 has a vibration surface 2a that transmits and receives ultrasonic waves. And the ultrasonic sensor 2 is attached in the state where the vibration surface 2a of the ultrasonic sensor 2 is arranged upward in the cylinder of the support cylinder 6.

  In the radiation direction (vertical direction) of the ultrasonic beam from the ultrasonic sensor 2, a curved reflector (reflecting member) 7 for reflecting the ultrasonic beam in the horizontal direction is provided. The upper end of the support arm 8 is fixed to the curved reflector 7. The lower end portion of the support arm 8 is fixed to the arm fixing portion 9 on the outer peripheral surface of the support cylinder 6.

  The curved reflector 7 is formed by a convex mirror. The curved reflector 7 is formed with a convex curved surface having a slightly curved surface having a convex shape on the right side in FIG. The curved reflecting plate 7 is installed so that an ultrasonic beam radiated from the ultrasonic sensor 2 in the vertical direction is hit.

  When the ultrasonic beam from the ultrasonic sensor 2 is reflected in the horizontal direction by the curved reflecting plate 7, an appropriate expansion angle spreading in a fan shape is given by the convex curved surface of the curved reflecting plate 7. Thereby, the beam shape of the ultrasonic beam from the ultrasonic sensor 2 is changed from a narrow-angle beam (pencil beam) having a narrow expansion angle (beam width) of the ultrasonic beam to a narrow-angle beam having an expansion angle in the EL (vertical) direction. It can be changed to a wider wide-angle beam (fan beam).

  A cylindrical scale plate 10 and a slip ring holding portion 11 are disposed under the support cylinder 6. A slip ring (not shown) is contained in the slip ring holding portion 11. The slip ring holding unit 11 includes a rotation support mechanism 12 that supports the curved reflector 7 so as to be rotatable about the central axis O. The rotation support mechanism 12 includes, for example, a rotary encoder and a stepping motor (not shown).

  A target 13 is arranged in the traveling direction of the ultrasonic beam reflected in the horizontal direction by the curved reflecting plate 7. The target 13 is formed by a triangular plate or the like that is a pseudo target such as an aircraft that is actually used in an actual radar device.

  The pulse radar experiment unit 3 controls transmission ON / OFF of the ultrasonic sensor 2 based on a signal from the control unit 4. Thereby, the ultrasonic wave from the ultrasonic sensor 2 is transmitted and received, and the distance to the target 13 is measured. Further, the pulse radar experiment unit 3 controls rotation ON / OFF of the rotation support mechanism 12. As a result, the curved reflector 7 is rotated to detect the omnidirectional target 13. Further, the pulse radar experiment unit 3 amplifies and detects the ultrasonic wave received by the ultrasonic sensor 2 to generate a received video signal.

  The control unit 4 includes, for example, a personal computer and a radar scope 5 that is a monitor. Then, the control unit 4 controls the pulse radar experiment unit 3. At this time, a video signal is created by the target 13 and displayed on the radar scope 5 in a pseudo manner.

  Next, the operation of the radar function learning apparatus 1 of the present embodiment having the above configuration will be described with reference to the flowchart shown in FIG. When the radar function learning apparatus 1 of the present embodiment is used, the pulse radar experiment unit 3 controls transmission ON / OFF of the ultrasonic sensor 2 by a signal from the control unit 4. If it is determined in act1 that the transmission of the ultrasonic sensor 2 is ON, an ultrasonic beam is emitted from the ultrasonic sensor 2 in the vertical direction (act2). The ultrasonic beam radiated from the ultrasonic sensor 2 in the vertical direction is reflected in the horizontal direction by the curved reflecting plate 7. At this time, the ultrasonic beam from the ultrasonic sensor 2 is reflected in the horizontal direction while spreading in a fan shape on the convex curved surface of the curved reflecting plate 7. Thereby, the beam shape of the ultrasonic beam from the ultrasonic sensor 2 is changed from a narrow-angle beam (pencil beam) having a narrow expansion angle (beam width) of the ultrasonic beam to a narrow-angle beam having an expansion angle in the EL (vertical) direction. It can be changed to a wider wide-angle beam (fan beam).

  Also, the ultrasonic beam reflected in the horizontal direction by the curved reflecting plate 7 and traveling in the horizontal direction is reflected from the target 13 when it hits the target 13 in the traveling direction (act 3). The reflected wave of the ultrasonic beam reflected from the target 13 is received by the ultrasonic sensor 2 through a path opposite to that emitted from the ultrasonic sensor 2 (act 4).

  The pulse radar experiment unit 3 amplifies and detects the ultrasonic wave received by the ultrasonic sensor 2 and generates a received video signal (act 5). This video signal is input to the radar scope 5, and the position of the target 13 is displayed on the radar scope 5 in a pseudo manner (act 6).

  Further, during the operation of the radar function learning device 1, the rotation support mechanism 12 is driven, and the curved reflecting plate 7 rotates over the entire circumference of 360 ° in the clockwise direction or the counterclockwise direction around the central axis O. Driven. Thereby, the ultrasonic beam radiated in the vertical direction from the ultrasonic sensor 2 and reflected in the horizontal direction by the curved reflector 7 can be radiated over the entire 360 ° circumference.

  Therefore, the radar function learning device 1 of the present embodiment having the above configuration has the following effects. That is, in the radar function learning device 1 of the present embodiment, the curved reflector 7 that reflects the ultrasonic beam emitted in the vertical direction from the ultrasonic sensor 2 in the horizontal direction is provided, and the curved reflector 7 has a convex curved surface. It is formed by a convex mirror. When the ultrasonic beam from the ultrasonic sensor 2 is reflected by the curved reflecting plate 7 in the horizontal direction, an appropriate expansion angle spreading in a fan shape is given by the convex curved surface of the curved reflecting plate 7. . Thereby, the beam shape of the ultrasonic beam from the ultrasonic sensor 2 is changed from a narrow-angle beam (pencil beam) having a narrow expansion angle (beam width) of the ultrasonic beam to a narrow-angle beam having an expansion angle in the EL (vertical) direction. It can be changed to a wider wide-angle beam (fan beam). As described above, by changing the beam shape of the ultrasonic beam to the fan beam shape, the capture range of the target 13 by the ultrasonic beam can be expanded, and the target detection capability in the EL (vertical) direction can be improved. .

  The position of the target 13 is displayed on the radar scope 5 by applying the ultrasonic beam traveling in the horizontal direction to the target 13 in the traveling direction and receiving the reflected wave of the ultrasonic beam by the ultrasonic sensor 2. . Further, during the operation of the radar function learning device 1, the rotation support mechanism 12 is driven to rotate the curved reflector 7 in the clockwise direction or the counterclockwise direction. As a result, a fan beam that is wide in the EL (vertical) direction can be emitted over the entire 360 ° circumference, and the target 13 in all directions can be detected.

  Accordingly, since the beam shape in the radar function learning apparatus 1 of the present embodiment and the radar apparatus actually used in the field such as an airport monitoring radar becomes the same fan beam, the beam is actually actually used in the field such as an airport monitoring radar. There is an effect that it is easy to understand the used radar apparatus. Furthermore, in the radar function learning apparatus 1 of the present embodiment, it becomes possible to confirm how the detection of the target 13 changes due to the difference in beam width.

  According to the above-described embodiment, it is possible to easily change the beam shape of the ultrasonic beam emitted from the ultrasonic sensor from the pencil beam to the fan beam, and to easily understand the actual apparatus of the radar apparatus. A function learning device can be provided.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

    DESCRIPTION OF SYMBOLS 1 ... Radar function learning apparatus, 2 ... Ultrasonic sensor, 2a ... Vibration surface, 3 ... Pulse radar experiment part, 4 ... Control part, 5 ... Radar scope (display part), 6 ... Support cylinder, 7 ... Curved reflector ( Reflective member), 8 ... support arm, 9 ... arm fixing part, 10 ... scale plate, 11 ... slip ring holding part, 12 ... rotation support mechanism, 13 ... target.

Claims (4)

A radar function learning device that displays the position of the target on a display unit of a monitor by applying an ultrasonic beam emitted from an ultrasonic sensor to the target and receiving a reflected wave of the ultrasonic beam,
A support portion for supporting the ultrasonic sensor in a state in which an ultrasonic beam emitted from the ultrasonic sensor is directed in a vertical direction;
A reflecting member disposed in a radiation direction of the ultrasonic beam emitted from the ultrasonic sensor and reflecting the ultrasonic beam in a horizontal direction;
The reflecting member changes the beam shape of the ultrasonic beam emitted from the ultrasonic sensor from a narrow-angle beam having a narrow expansion angle of the ultrasonic beam to a wide-angle beam having a wider expansion angle than the narrow-angle beam. A radar function learning device having a curved reflector to be changed. The radar function learning device according to claim 1, wherein the curved reflector is formed by a convex mirror. The operation of the ultrasonic sensor is controlled to transmit / receive an ultrasonic beam, the ultrasonic beam emitted from the ultrasonic sensor is applied to the target, and the reflected wave of the ultrasonic beam is received to the target. A pulse radar experiment unit that measures the distance of the received signal, amplifies and detects the received ultrasonic wave, and generates a received video signal;
The radar function learning device according to claim 1, further comprising: a control unit that controls the pulse radar experiment unit and displays the position of the target on the display unit from the received video signal. The support unit is a sensor holding unit that holds the ultrasonic sensor in a state in which the central axis of the ultrasonic sensor is disposed on a vertical rotation axis;
4. A rotation support mechanism that includes an arm fixing portion that fixes a support arm of the curved reflecting plate, and supports the curved reflecting plate so as to be rotatable about the central axis. 5. The radar function learning device according to the item.