Gravity: Digital Microwave Sensor (Motion Detection)

1 review
Price:
Sale price A$18.11   Inc. GST
SKU:
DF-SEN0192
4 units Ships in 24 hours
414 units Ships in 7 to 10 days
The microwave sensor applies the Doppler effect to detect moving objects using microwaves. This differs from the method used by a regular infrared (IR) sensor as microwave is sensitive to a variety of objects that are microwave-reflective, and its sensor readings are not affected by the ambient temperature.

This type of sensor is widely used in industrial, transportation and civil applications such as measuring vehicle speed, liquid levels, automatic door motion detection, automatic washing, production line material detection and car reversing sensors etc.

The microwave detection method has the following advantages compared to other methods:
  1. Non-contact detection
  2. Readings not affected by temperature, humidity, noise, air, dust or light - suitable for harsh environments
  3. Strong resistance to radio frequency interference
  4. Low output, urharmful to human
  5. Wide detection range and high velocity
  6. Supports non-living object detection

Applications:

The microwave sensor can be useful together with other sensors to enhance its measurement accuracy. For example, Microwave sensor could decrease the pseudo fault report rate of human motion detection. And it does a good job in safety & security work.

Specification:

  • Working Voltage: 5V + 0.25V
  • Working Current (CW): 60mA max., 37mA typical
  • Interface: Gravity 3-Pin interface(Digital)
  • Size: 48.5x63mm
  • Emission parameters:
    • Detection Distance: 2-16M continuously adjustable
    • Emission 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.): 5uSec
    • Load Cycle (Min.): 1%
  • Reception Parameters:
    • Sensitivity:(10dB S/N ratio) 3Hz to 80Hz
    • Bandwidth: -86dBm
    • 3Hz to 80Hz Bandwidth Clutter: 10uV
    • Antenna Gain: 8dBi
    • Vertical 3dB Beam Width: 36 degrees
    • Level 3dB Beam Width: 72 degrees

Documents:

Product Includes:

  • Microwave Sensor x1
  • Digital Sensor Cable x1
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S.
13/04/2016
Shane ..
Australia Australia

Great detector only a few niggling issues

This works really well and the microwaves do go through anything non-metallic. The only issue I've seen is that if you mount it directly onto something with the antenna facing out the sensitivity adjustment is on the same side as the antenna so you need to disassemble it to change the sensitivity.If you want to narrow the detection area or focus the microwave beam (which I wanted to and so couldn't mount it another way so I lost access to the sensitivity adjustment) create a non-conductive layer around the mounting feet and then introduce a layer of aluminium foil from your kitchen on top of that put something to secure it (I used 3M blue painters tape for the top/bottom layer although gaffer tape would probably be better). My legs were 30mm high - that makes for a narrower beam that is triggered by something walking through it. I wouldn't go higher than 30mm too much more than that may reduce the microwave strength to the point where it may not detect anything any more.Make sure that the aluminium foil isn't going to short anything.

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3. Express split shipping: Local stock from Melbourne will be shipped ASAP (1 business day) using EXPRESS shipment while remaining items from overseas stock when arrived in Melbourne shipped using second EXPRESS shipment. 
4. Pick up from Thomastown, Melbourne is available on appointment between 9 am to 3 pm during business days. 

  

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