Design of wireless medical liquid-level monitoring and controlling system based on RF technology

This paper introduces a wireless medical liquid-level monitoring and controlling system based on RF technology, in which liquid levels beyond limits are monitored by using the principle of different refractive indexes of light rays in air and in liquid and adopting the non-contact photoelectric monitoring method, and 8051 single chip computer were used as main MCU, through controlling RF module RF905 to transmit and receive alarm signals, also control the nixie tubes and buzzer to give sound and light alarms.