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...
Sensors Network traffic Error logs All this added data means that storage requirements are higher, andany analysiscan be more complex than active monitoring. Important to remember, with passive monitoring, you’ll have less control over the generated data than active monitoring. Advantages Both method...
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...
The corresponding RF signal is received by a wireless receiver (209) outside the region of interest, enabling determination of a location of the sensor within the region of interest.ERKAMP Ramon QuidoJAIN Ameet KumarBHARAT ShyamVIGNON Francois Guy Gerard MarieVAIDYA Kunal...
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...
It is one of the most important components in lightwave communication systems and photonic sensors, as well as in optical instrumentation. Issues such as optical power, wavelength, spectral line width, relative intensity noise, modulation response, and modulation chirp are practical concerns in an ...
Exploration and comparison of the pre-impact lead time of active and passive falls based on inertial sensors. 来自 NCBI 喜欢 0 阅读量: 147 作者:L Ding,K Ivanov,H Li,Y Ning,G Zhao 摘要: Research on falls in elderly people has a great social significance because of the rapidly growing of...
may be detected more precisely in environments with low amounts of ambient illumination. A 3D imaging system 400 with a plurality of imaging sensors 406-1, 406-2 and an active illuminator 404 may selectively run the illuminator 404 when beneficial, while saving the power when in an environment...
Sensitivity to Soil Moisture By Active and Passive Microwave Sensors. Provides information on a study on the sensitivity of the backscatter measured by radar and the emission measured by a radiometer to the moisture content... Yang,Ulaby,T Fawwaz - 《IEEE Transactions on Geoscience & Remote Sensin...
Passive and active in-line fiber components using high index overlays on monomode optical fiber 来自 SPIE 喜欢 0 阅读量: 27 作者:RB Charters,AP Kuczynski,SE Staines,RP Tatam,GJ Ashwell 摘要: As single mode fiber optic sensors become more complex there is an increasing need for efficient low...