Ward Calling System Based on Power Line Communication

Objective To introduce ward calling system based on power line communication. Methods The system is de- signed based on SCM and spread spectrum communication chip. It adopts principal and subordinate structure, transmits data on low-voltage power line. The spread spectrum communication chip is SC1128, which is specially designed for Chi- nese low power line. Results The system can communicate correctly in testing, and the max communication distance is 500m. Conclusion The system have many functions such as line up shows, priority setting, records storage, etc. It has been fit to be put into use and be extended in all of the various levels of hospital.