The sensing of a threat can be performed by a Doppler radar.
The essence of the invention is the use of a doppler radar motion detector, normally used for vehicular speed detection or the detection of building occupancy.
A time limited coherent frequency doppler radar system monitors a precisely bounded merchandise detection zone for motion of a transducer therein.
Motion sensors that use Doppler radar technology respond optimally when the distance from the sensor changes.
When the sensors are micro-switches, a Doppler effect radar sensor is used for measuring the speed of the ball and for evaluation of the shot force.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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