Self-powered signal processing using vibration-based power generation
Self-powered signal processing using vibration-based power generation
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DOI：
10.1109/4.668982
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发表时间：
1998-05-01
影响因子：
5.4
通讯作者：
Chandrakasan, AP
中科院分区：
文献类型：
--
作者：
Amirtharajah, R;Chandrakasan, AP
低功耗设计趋势提高了使用环境能源为未来数字系统供电的可能性。设计和测试了一种芯片，以证明利用环境中的振动产生的能量来操作数字系统的可行性，并使用移动线圈电磁换能器作为发电机。计算表明，可产生约400微瓦的功率。该测试芯片集成了一个使用延迟反馈技术调节发电机电压的超低功耗控制器，以及一个低功率子带滤波DSP负载电路。测试验证了子带滤波器的500 kHz自供电操作，这一性能水平适合传感器应用。整个系统，包括DSP负载，消耗了18微瓦的功率。该芯片采用0.8微米标准工艺实现。一次发电机励磁在500 kHz时钟频率下产生23毫秒的有效数字信号处理器运行，相当于11 700个周期。
Low power design trends raise the possibility of using ambient energy to power future digital systems. A chip has been designed and tested to demonstrate the feasibility of operating a digital system from power generated by vibrations in its environment, A moving coil electromagnetic transducer was used as a power generator. Calculations show that power on the order of 400 mu W can be generated. The test chip integrates an ultra-low power controller to regulate the generator voltage using delay feedback techniques, and a low power subband filter DSP load circuit. Tests verify 500 kHz self-powered operation of the subband filter, a level of performance suitable for sensor applications. The entire system, including the DSP load, consumes 18 mu W of power. The chip is implemented in a standard 0.8 mu m CMOS process. A single generator excitation produced 23 ms of valid DSP operation at a 500 kHz clock frequency, corresponding to 11 700 cycles.