Active monitoring will be based on the results of synthetically generated data. For example, during active network monitoring, test network packets are ingested to simulate the actual network behavior. This helps observe the measurements of various performance parameters. During the process, extra traffi...
This study compared the potential of active and passive canopy sensors for predicting biomass production in 25–32 randomly selected positions of a Merlot vineyard. Both sensors provided estimates of the normalized difference vegetation index (NDVI) from a nadir view of the canopy at veraison that ...
Active sensorshave their own source of light or illumination. In particular, it actively sends a pulse and measures the backscatter reflected to the sensor. Butpassive sensorsmeasure reflected sunlight emitted from the sun. When the sun shines, passive sensors measure this energy. More on this lat...
Active wheel-speed sensors require power to operate, whereas passive units do not. There are two types of active wheel-speed sensors: a Hall-effect sensor and a magneto-resistive sensor. A Hall-effect sensor requires either a toothed or magnetic ring to generate a voltage signal, whereas a m...
Active regeneration is a more controlled process that is started by the engine control unit (ECU). The ECU uses sensors to monitor the exhaust gas temperature, pressure and flow rate to determine when active regeneration is required. Extra fuel is sent to the exhaust, so that its temperatur...
PASSIVE AND ACTIVE SENSORS FOR ULTRASOUND TRACKING 申请(专利)号: US201716468022 申请日: 2017-12-08 专利号: US2020008775A1 公开公告日: 2020-01-09 主分类号: A61B8/08 申请权利人: KONINKLIJKE PHILIPS N.V. 公开国代码: US 分类号: A61B8/08; A61B5/06; A61B90/98; A61B8 发明设计人: ...
Attention of this paper is focused on the difference among passive, active and semi-active control systems. If passive control systems are used enhancing structural damping, stiffness or strength, the other control techniques employ controllable forces to add or dissipate, or both, energy in a ...
Indeed, we show—through an accurate link budget based on ITU channel models—that active transmitters may actually generate harmful interference to highly sensitive sensors on satellites orbiting over communication systems. Shared access between sensing and communications has never been demonstrated ...
The benefits, drawbacks, and potential of ice cover studies using the proposed method are discussed. We analyze in detail how this method is influenced by the difference in footprints of the T/P sensors and by the radiometric properties of ice and snow at different stages of ice cover ...
The longest PLTs were measured on the chest or waist instead of other locations, such as the thigh and shank. The PLTs of the three kinds of fall activities were slightly different, but there was a significant difference between two fall modes. The PLT showed the correlation to the body ...