Motion detection via microwave radar
Motion / proximity detection
- Microwave
- 2-16 m (continuously adjustable)
- Interface : digital (gravity connector 3 pins)
- 5V
- SEN0192
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Gravity: Digital Microwave Sensor (Motion Detection)
This sensor use the Doppler Effect to detect motion and movements. To be more pratical to understand, the Doppler effect is usually described with soundwaves. This sensor do not use soundwave to detection motion but quite shorten waves... so shorten that we reach the microwave area. Don't worry, we are not about to cook anything here!
The doppler effect is quite different from the regular sensors using infrared (IR). Microwave is sensitive to a variety of objects that are microwave-reflective (so looootttt of objects) and its readings are not affected by the ambient temperature (as IR sensors are).
Microwave sensor are used in industrial, transportation and civil applications. They can measure liquid level, object motion detection (automatic door), vehicle speed, material detection on a production line, car reversing detector, etc.
Microwave detection offers some advantages:
- Non-contact detection
- Readings not affected by temperature, humidity, noise, air, dust or light.
Well adapted to harsh environments - Strong resistance to radio frequency interference
- Low output (unharmful to human)
- Wide detection range
- high velocity detection
- Can detect non-living object.
Technical details
- Voltage: 5V + 0.25V
- Current (CW): 60mA max., 37mA typical
- Interface: digital (Gravity 3-Pin interface)
- Size: 48.5 x 63mm
- Emission parameters:
- Detection Distance: 2-16m continuously adjustable
- Frequency: 10.525 GHz
- Precision Frequency Setting: 3MHz
- Output Power (minimum): 13dBm EIRP
- Harmonic Emission: < -10dBm
- Average Current (5%DC): 2mA typ.
- Pulse Width (Min.): 5µSec
- Load Cycle (Min.): 1%
- Reception Parameters:
- Sensitivity:(10dB S/N ratio) 3Hz to 80Hz
- Bandwidth: -86 dBm
- 3Hz to 80Hz Bandwidth Clutter: 10uV
- Antenna Gain: 8dBi
- Vertical 3dB Beam Width: 36 degrees
- Level 3dB Beam Width: 72 degrees
Tutorial
- Digital Microwave sensor tutorial (DFRobot, English)
- Other documents (DFRobot, English)
Evaluation Board/Kit Important Notice
DFRobot provides the enclosed product(s) under the following conditions:
This evaluation board/kit/module is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by DFRobot to be finished end-product fit for general consumer use. Persons handling the product must have electronics training and observe good engineering practice standards. As such the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing related protective considerations, including product safety and environmental measures typically found in the products that incorporate such semiconductor components or circuit boards. This evaluation board/kit/module does not fall within the scope of the European Union directives regarding electromagnetic compatibility, FCC, CE or UL and therefore may not meet the technical requirements of these directives or other related documents.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further the user indemnifies DFRobot from all claims arising from the handling or use of the goods. Due to the open construction of the product, it's the user responsibility to take any and all appropriate precautions with regard to electrostatic discharge, conducted and radiated emissions.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES.
