机构地区: 南方医科大学基础医学院
出 处: 《医疗卫生装备》 2006年第2期7-8,共2页
摘 要: 基于MSP430F149单片机结合斩波式放大器所研制的自动增益控制电路,实现了对脉搏波信号的连续无级调节,有效地克服了由于个人生理差异而引起的测量信号基线漂移、易饱和等问题,满足了仪器便携化、低功耗设计的要求。 The automatic gain control circuit is designed on the basis of MSP430F149 microcomputer with the chopper amplifier, and then continuous stepless regulation of pulse wave signal is fulfilled. Thus individual variation-induced problems are eliminated such as signal baseline drift and saturation. With this circuit, medical instruments can be portable and low-power-consumption.