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Sensors LED lighting intelligent control
fecha:2011-06-09 11:16
estado:para resolver
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o achieve the purpose of control switch. Figure 8 is a combination of ultrasonic sensor and microprocessor applications.


Longitudinal ultrasonic oscillation, can be in gas, liquid and solid communication, and its spread at different rates; it also has the phenomenon of refraction and reflection, airborne low frequency decreases rapidly, and in the solid, liquid, the attenuation small, distant spread. Ultrasonic sensors is the use of ultrasound for these features. Ultrasonic sensors are sensiti
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