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Gravity: Microwave Sensor (Motion Detection)

SKU: SEN0192

$24.55 AUD, inc GST
$22.32 AUD, exc GST

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Gravity: Microwave Sensor (Motion Detection)
24.55 AUD

SKU: SEN0192

$24.55 AUD, inc GST
$22.32 AUD, exc GST
2 reviews 0 5 5

Shipping:

  • $6.95 Standard (2-4 days, tracked)
  • $8.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

Introduction

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

Parts List

  • Microwave Sensor x1
  • Digital Sensor Cable x1
Documentation and Resources:

Product Comments


Customer Reviews

  1. Review by Mal verified purchaser
    Rating
    100

    This unit worked wonders for my project - detection of pedestrians approaching our intercom to turn outside lights on automatically. We didn't want vandals or burglars to be able to see the lighting sensor, and PIR's are rubbish for this sort of outdoor scenario, so we have one of these in a plastic project box behind a 110mm brick wall, and we were still able to calibrate it to detect a person about 1.2 metres from the wall.

    We used an Adafruit Pro Trinket (also from Core Electronics) to give the sensor some "immunity" from false triggering from the occasional bird/passing bus etc.

    My only comment on possible improvements would be to have the trimpot leads breakout into pins, instead of being on the front of the unit (we just desoldered and put one on the opposite side anyway!). This means easier adjustment when using the sensor to penetrate walls - which probably isn't its ideal usage, but worked out well anyway! (Posted on 12/06/2018)

  2. Review by Chris verified purchaser
    Rating
    100

    Works very well with Arduino platform. Adjustable sensitivity and easy to get going. Much better than a PIR. (Posted on 11/09/2017)

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.95 for Express Post (Overnight for Australia Post Next Day Network, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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