摘要
一种基于单片机比较模式的扫频激振技术实现的多路振弦传感器分时激振的新方法。与传统的激振方法相比,具有硬件电路简单、激振效果好、扫频信号频率可控等优点。固态继电器和恒流弱激振电路的应用,减小了电路的电磁辐射,避免了振弦的倍频振动,提高了振弦传感器振动的稳定性和一致性。
A new method which is used to excite multi-channel vibrating sensor using the technology of sweeping frequency and time division multiplexing based on MCU＇s compare module is described o It has many advantages, for example, circuit of simple of hardware, be reliable to excite coil and easy to control frequency of exciting. The solid state relay and weak excitation circuit is used that can reduce electromagnetic emission and avoid frequency multiplication vibration o The stability and consistency of sensor vibration is improved o
出处
《电子技术应用》
北大核心
2010年第5期26-28,共3页
Application of Electronic Technique
关键词
扫频激振技术
振弦传感器
单片机
比较模式
恒流弱激振
间歇激振
technology of sweeping frequency to excite coil
vibrating wile strain gages
MCU
compare mode
const ant currentand weak excitation circuit
intermittent exciting coil to vibrate
