设计制作一套无线识别装置。该装置由阅读器、应答器和耦合线圈组成，其方框图见图1。阅读器能识别应答器的有无、编码和存储信息。阅读器应答器耦合线圈外接单电源-Design of a wireless identification device. The device consists of readers, transponders and coupling coils, which block diagram shown in Figure 1. Transponder reader can identify the presence or absence, coded and stored information. Reader transponder coupling coil single external power supply