Abstract: This paper present the wireless sensor circuit which is used for continuous monitoring the patient health parameters using simple, low-cost controller based Zigbee communication system. In this system using wireless technology to transfer or collect the information of the patient. Pulse rate of the subject is measured from the thumb finger using IRD (Infra Red sensor) and pulse rate is then averaged and displayed on a PC monitor. It is important for continuous monitoring in hospitals. This system uses regulated 5V, 750mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer. Temperature, pulse rate, O2 level will be displayed on the LCD display which is connected to the ARM controller. And also the doctor PC monitor will have continuous information. This wireless technology works as master and slave communication. In this system pc is master terminal has visual basic software unit.
Keywords: Zigbee, ARM Controller, Visual Basic, sensor.