Design of wireless RF Communication interface for miniaturized in-born electronic pressure measuring device
Yue Ha · Sensor World · 2013
Existing electronic pressure measuring devices communicate with PC via infrared interface.Some problems exist by this way such as short transmission distance,restrictive angle limit in transmission process,fixed location of communication device,too much external disturbance and so on.In order to solve the problems mentioned above,a wireless RF interface communication system is designed in this paper.Using CC430 from TI as main control chip,combining MSP430 with CC1101,the system realizes the functions of wireless transmitting and receiving by wireless matching circuits.Experiments verifies that this system has working frequency of 433MHz,communication rate of 250kbps,zero packet error of transceiver module within 50m.It can realize accurate communication between pressure measuring devices and PC,and get smooth pressure curve.Moreover,energy-saving design ensures that the working time of system can reach 3.5 year by two 1.5V batteries.