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利用环境能量探测运动并节省能源
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利用环境能量探测运动并节省能源
利用环境能量探测运动在各种环境中，包括消费者、工业、医疗和安全部门都有着广泛的应用前景。传感器融合，结合其他传感器类型的运动，正在扩大，随着控制器和接口电路集成增加。在某些情况下，传感器正在检测外部运动，例如用于节能照明控制的占用传感器。在其他人中，他们感觉到他们所依附的装置的运动，例如运动和健身器材。
Figure 1： Sports clothing and equipment manufacturers have exploited kinetic energy for some years. Now the technology is maturing. Photo source： Ecouterre.com.
In most of these applications， particularly battery-powered devices， power consumption remains a critical factor. Energy harvesting techniques can provide the additional power needed， either to power systems directly， or to provide a battery boost. This is especially useful in environments where batteries cannot be used or cannot easily be replaced. Ironically， motion （kinetic energy） is a potential energy source to be harvested， but piezo-electric， thermo-electric， solar and RF power sources can prove just as useful.
This article will highlight actual and potential motion sensing applications that benefit from harvested ambient energy： be it in the home， office or factory; in health and fitness; in the car; as well as in a host of portable devices such as games， smartphones， and cameras. A number of specialist motion sensing components have been designed specifically for ultra-low-power operation.
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