JP2021173738A

JP2021173738A - Delay device

Info

Publication number: JP2021173738A
Application number: JP2020096462A
Authority: JP
Inventors: 洋介鈴木; Yosuke Suzuki; 峻規吉田; Takaki Yoshida; 薫新保; Kaoru Shimpo
Original assignee: Keycom Corp
Current assignee: Keycom Corp
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-11-01

Abstract

To provide a delay device in which for making collision prevention experiments of an automobile using a radar succeed, a transmission wave from the radar reflects short of a reception unit of the delay device, the radar receives the reflected transmission wave, and a ghost in which a situation where a target exists right near the radar occurs does not appear.SOLUTION: A reception antenna RXA of a delay device RTS and a transmission antenna TXA thereof are separated, and a transmission wave of a radar is configured so that the transmission wave of the radar does not wrap around the reception antenna at close range. A transmission-purpose antenna of a radio wave of a detection device such as the radar and the like and a reception-purpose antenna thereof, and the reception-purpose antenna of the delay device and the transmission-purpose antenna thereof are configured so that respective spatial distances among these antennas are small, and these antennas physically get close and radio-wave wise get connected.SELECTED DRAWING: Figure 1

Description

Detailed description of the invention

レーダーの送信波が遅延装置の受信部または送信部で反射した場合に、この反射波がレーダーの受信部に入力されないようにする遅延装置A delay device that prevents the reflected wave from being input to the receiver of the radar when the transmitted wave of the radar is reflected by the receiver or transmitter of the delay device.

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Issues to be disclosed by the invention

レーダーの送信波を遅延装置で受信し、遅延をかけてレーダーに送り返す。すると、ターゲットが遠くにいるかのようにレーダーを騙すことができる。同様に、遅延時間を調整することによってレーダーを騙し、ターゲットが近づいてきたり、遠くに離れていく状況を表現できる。また、反射波の強弱を調整して、レーダーに対して、ターゲットをトラックや軽自動車に見せることもできる。
このとき、レーダーからの送信波が遅延装置の受信部の手前で反射し、これをレーダーが受信すると、レーダーのすぐ近くにターゲットが存在する状況が発生する。これをゴーストというが、ゴーストが現れないようにしたい。The radar transmission wave is received by the delay device, delayed and sent back to the radar. Then you can trick the radar as if the target were far away. Similarly, by adjusting the delay time, it is possible to deceive the radar and express the situation where the target is approaching or moving away. You can also adjust the strength of the reflected waves to make the target look like a truck or light vehicle to the radar.
At this time, the transmitted wave from the radar is reflected in front of the receiving unit of the delay device, and when the radar receives this, a situation occurs in which the target exists in the immediate vicinity of the radar. This is called a ghost, but I want to prevent the ghost from appearing.

Means to solve problems

レーダーからの送信波が遅延装置の手前で反射する場合、その反射波がレーダーの受信部に決して戻らないようにする。If the transmitted wave from the radar is reflected in front of the delay device, make sure that the reflected wave never returns to the radar receiver.

本実施例を図１に示した。
自動車に装着しているレーダーＲの送信アンテナＴＸＡから出た送信波は、このアンテナに密着した遅延装置ＲＴＳの受信アンテナＡＲに入力される。
なお、この送信波が遅延装置ＲＴＳの受信部ＲＸで反射してきても、レーダーの受信アンテナＲＸＡには戻らない。もし、遅延装置ＲＴＳの受信アンテナＡＲと送信アンテナＡＴが１つのアンテナで兼用になっていれば、遅延装置からの反射波がレーダーの受信アンテナに入り、ゴーストが出てしまう。
このため、遅延装置ＲＴＳの受信アンテナＡＲと送信アンテナＡＴを分離・独立して機能させることによってゴーストを回避するが、これが、本発明の最も重要な点となる。This embodiment is shown in FIG.
The transmitted wave emitted from the transmitting antenna TXA of the radar R mounted on the automobile is input to the receiving antenna AR of the delay device RTS in close contact with this antenna.
Even if this transmitted wave is reflected by the receiving unit RX of the delay device RTS, it does not return to the radar receiving antenna RXA. If the receiving antenna AR and the transmitting antenna AT of the delay device RTS are shared by one antenna, the reflected wave from the delay device enters the receiving antenna of the radar, and a ghost appears.
Therefore, ghosts are avoided by making the receiving antenna AR and the transmitting antenna AT of the delay device RTS function separately and independently, which is the most important point of the present invention.

本実施例を図２に示した。
自動車に装着しているレーダーＲの送信アンテナＴＸＡから出た送信波は、少し離れた位置にある遅延装置ＲＴＳの受信アンテナＡＲに入力される。
なお、この送信波が、ＲＴＳの導波路ＷＧＲを通って遅延装置ＲＴＳの受信アンテナＲＸで反射してきても、レーダーの受信アンテナＲＸＡには戻らない。
もし、遅延装置ＲＴＳの受信アンテナＡＲと送信アンテナＡＴが１つのアンテナで兼用になっている場合、遅延装置からの反射波がレーダーの受信アンテナに入り、ゴーストが出てしまう。
なお、遅延装置ＲＴＳの送信アンテナＡＴは、レーダーの受信アンテナＲＸＡを支点にして水平面上で左右に首を振ることにより、ターゲットの水平面上の方位を変えることができる。このことにより、ターゲットの方位を左右に振ることができる。この場合も、レーダーＲの送信アンテナＴＸＡと遅延装置ＲＴＳの受信アンテナＡＲの向きをＲＸＡの方に向けないで、レーダーの送信波がレーダーの受信アンテナに入力されないように注意した。This embodiment is shown in FIG.
The transmitted wave emitted from the transmitting antenna TXA of the radar R mounted on the automobile is input to the receiving antenna AR of the delay device RTS located at a distance.
Even if this transmitted wave is reflected by the receiving antenna RX of the delay device RTS through the waveguide WGR of the RTS, it does not return to the receiving antenna RXA of the radar.
If the receiving antenna AR and the transmitting antenna AT of the delay device RTS are shared by one antenna, the reflected wave from the delay device enters the receiving antenna of the radar, and a ghost appears.
The transmitting antenna AT of the delay device RTS can change the direction of the target on the horizontal plane by swinging its head left and right on the horizontal plane with the receiving antenna RXA of the radar as a fulcrum. As a result, the direction of the target can be swung left and right. In this case as well, care was taken not to direct the transmitting antenna TXA of the radar R and the receiving antenna AR of the delay device RTS toward the RXA so that the transmitted wave of the radar would not be input to the receiving antenna of the radar.

自動車の衝突防止のためには、前方車を捉えるレーダーが有効である。
こうしたレーダーの有効性を検証する試験を室内で行うために遅延装置を使用するが、レーダーの付近でゴーストが検出されると、衝突防止のブレーキが動作しなくなってしまう。このため、ゴーストが発生しないよう、遅延装置の受信アンテナ部分と送信アンテナ部分を分けておくと、試験の精度が向上し、レーダー、ひいては自動車の機能向上に貢献する。Radar that catches the vehicle in front is effective for preventing vehicle collisions.
Delay devices are used indoors to test the effectiveness of these radars, but if ghosts are detected near the radar, the anti-collision brakes will fail. Therefore, if the receiving antenna portion and the transmitting antenna portion of the delay device are separated so that ghosts do not occur, the accuracy of the test is improved, which contributes to the improvement of the functions of the radar and the automobile.

遅延装置の受信アンテナとレーダーの送信アンテナが接近している遅延装置Delay device in which the receiving antenna of the delay device and the transmitting antenna of the radar are close to each other. 遅延装置の受信アンテナとレーダーの送信アンテナが分離するとともに、遅延装置の送信アンテナが首を振る遅延装置The receiving antenna of the delay device and the transmitting antenna of the radar are separated, and the transmitting antenna of the delay device shakes its head.

Claims

A delay device that separates the part that transmits radio waves and the part that receives radio waves, which evaluates the detection accuracy of the distance and speed to the target of the detection device such as radar, and the amount of reflection of radio waves from the target.

The transmitting antenna and receiving antenna of the radio wave of the detection device such as radar, and the receiving antenna and the transmitting antenna of the delay device have a short spatial distance and are physically close to each other and are joined by radio waves. The delay device of claim 1.

Radio waves transmitted from a detection device such as a radar are input only to the receiving part of the delay device so that they are input to the transmitting part, and the radio waves input to the receiving part of the delay device are reflected internally to the detection device. The delay device according to claim 1, wherein the transmitting antenna of the delay device shakes its head in a horizontal plane around the receiving antenna in front of the receiving antenna of the detection device.