摘要
一种专门用于测定大阻值范围的生物体电阻的特殊电阻测试仪,采用美国ADI公司的ADμC812嵌入式单片机作为控制芯片。与其它直流电阻测试仪不同的是,本测试仪除了可以用直流测量外,还采用程控变频方法对生物电阻进行交流测量。直流测量时电阻值最高可达到100 MΩ,交流测量时频率从10 Hz到5 kHz,电阻值最高为20 MΩ。
A particular resistance tester is presented which specifically tests biologic resistance with a wide measure range,it applies embedded MCU ADμC812 as the controller. Comparing to other DC testers, this tester adopts a method of controlled program and variable frequency, which implements a AC test to the biologic resistance. The highest resistance value in the DC test is 100 MΩ. And in the AC test, the frequency range is from 10 Hz to 5 kHz, the measure range is up to 20 MΩ.
出处
《电子器件》
CAS
2006年第3期774-777,共4页
Chinese Journal of Electron Devices
关键词
变频
高阻抗
生物电阻
ADΜC812
variable frequency
high impedance
biologic resistance
ADμC812
