摘要
针对不同检测对象的回波信号必须进行相应放大以便作后续处理的现象，设计实现以AD603为核心的超声回波检测自动变增益放大电路。其超声回波信号从电路左端输入，先经AD603程控放大，单片机输出稳定电压控制增益，使得放大后的回波信号最大幅值不超过500mV，之后再由AD844固定放大10倍，使得回波信号在0～5V之间输出，为后续回波信号的处理、研究做好准备。
The different detecting echo signals must be amplified in different degree before been analyzed. This design achieves an AGC circuit to amplify supersonic echo signal on the basis of AD603. Input the circuit from the right side, the echo signals firstly are amplified tO the size blow 500mV controlled by the output voltage of micro-processor, then signals are amplified 10 times in order to limit the output signals size in 0-5V, to prepare to be processed and researched later.
出处
《兵工自动化》
2007年第11期68-69,共2页
Ordnance Industry Automation
