Study on the Design of a Magnetic Started Wireless Capsule Endoscopy

Based on the minimal CMOS image sensor OV6920, a magnetic controlled wireless capsule endoscopy has been designed in principles of micromation and low power consumption. The peripheral circuit of OV6920 is designed. With optical design, the power consumption of transmitting circuit is cut down according to the relationships between the resistance in series and the voltage, current, and transmitting power consumption. The total size of the system is only φ13×29mm, and the power consumption is about 100mW when all modules are connected altogether. The clear captured images in the imaging experiments prove the system design is feasible.