The combination of ultrasonic and microwave sensors offers versatile sensor applications and new solutions in terms of reliability of decision and robustness against distortions. For motion detection in an intruder alarm system, the redundant sensor information from the Doppler multisensor is used to distinguish a moving person from distortions. The superior performance is based on the fact tha...

The periodic whole cross-section model and the unit duct were established, differences between two models discussed. effects of shell wall baffle edges on side performance heat exchanger with trefoil-hole investigated using both models. Thermodynamics in transfer coefficient each tube different position It is found that disparities results numerical decreases increase inner diameter. When diame...

T ransesophageal echocardiography is a relatively new ultrasonic imaging technique that has been recently introduced, and despite its infancy, it has already become an established technique. The recent development of a transesophageal transducer with the capabilities of color flow Doppler is a major advance in the assessment of many patients in whom standard transthoracic twodimensional or Dopp...

This paper investigates the effects that the Doppler shift will theoretically have on a complex ultrasonic rangefinding system that utilizes a ring of concurrently operating sensors, using unique codes to reduce cross-talk between individual sensors. A methodology for selecting pseudorandom codes to maximize autocorrelation performance, maximize Doppler tolerance, and minimize cross-talk is pre...

Speeding is one of the leading causes traffic crashes worldwide. Radar velocimeter widely used in capture monitoring road overspeed violations, which can effectively reduce probability accidents and protect people’s life property safety to greatest extent. As a new type radar velocimeter, multitarget (MTRV) monitor speed more than two vehicles at same time. However, verification method device M...