Question 1

Which objects can be detected by the radar sensor?

Accepted Answer

Whether and how reliably an object can be detected by the radar sensor depends on the radar cross section (RCS) of the object to be detected. RCS is a measure of how well a target is detectable by radar, i.e. how much of the emitted energy is reflected by a target. The higher the RCS value, the greater the reflectivity and therefore the visibility of the target. The RCS value is dependent on factors such as material, size and angle of incidence, but not on the distance of the reflection target.

Question 2

Up to what distance can the radar sensor detect an object?

Accepted Answer

The range of a radar sensor is dependent on the radar cross section (RCS) of the object to be detected. Large, metallic objects (high RCS value), for example, can be detected at a distance of up to 50 metres, whereas a person (low RCS value) can be detected only at a distance of up to 15 metres.

Question 3

What is the difference between RCS and power?

Accepted Answer

Power is the energy reflected by an object, which decreases with increasing distance. The RCS value (radar cross section) is an object-specific variable and a describes how visible an object is for radar.
The RCS value, unlike the power, is independent of the distance and typically always the same (+/- 3dB). The radar cross-section depends upon a range of parameters, such as material, surface structure and object size.

Question 4

Do the sensors interfere with each other?

Accepted Answer

The radar sensors work using the method of frequency-modulated continuous wave (FMCW) radar. This means they emit a continuous, frequency-modulated signal. For two radar sensors to interfere with each other, they would have to undergo exactly the same frequency modulation at the same time. However, as the sensors operate with a modulation over 4 GHz, this is extremely unlikely.

Question 5

How large is the opening angle of the radar sensor?

Accepted Answer

	Horizontal	Vertical
R1D100 / R1D102	40°	30°
R1D200	40°	20°

Question 6

Why are there 2 different frequency ranges?

Accepted Answer

There is no global standard of which frequencies can be used for which applications and it may vary from one country to the next. Nevertheless, to allow maximum flexibility the radar sensors are available with a base frequency of 60 GHz or 77 GHz. This allows wide market coverage. The product dimensions and operation of the sensor are always the same for both frequencies.

Question 7

How close can targets be in order to still be detected as separate ones?

Accepted Answer

How well two close targets can be distinguished from each other is determined by the distance resolution / separation efficiency of the radar and largely dependent on the bandwidth used. The greater the bandwidth, the better adjacent targets can be detected individually. In standard operating mode the radar sensors have a distance resolution of 100 mm.

	レーダ距離センサ	レーダエリアセンサ
タイプ	R1D 距離検出	R2D 3D距離検出	R2D 3Dエリア監視
距離検出
速度検出
傾斜検出
検出領域を設定	距離のみ	3軸設定が可能 (X・Y・Z)	3軸設定が可能 (X・Y・Z)
位置座標	半径距離	X・Y・Z位置	X・Y位置
オブジェクトリスト
出力	IO-Link スイッチング出力 4～20mA、0～10V CAN	IO-Link スイッチング出力 4～20mA、0～10V CAN	IO-Link スイッチング出力 CAN

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視界不良でも距離測定が可能

レーダセンサの特長

レーダセンサのメリット

レーダ距離センサのアプリケーション

製品タイプ

R1Dレーダ距離センサ

R2Dレーダエリアセンサ

システム構成

IO-Linkによる付加価値

検出範囲計算ツール

よくある質問（FAQ）

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