Patients with chronic illnesses resist using conventional automated healthcare management systems to supply necessary clinical data because such systems feel impersonal, preferring to actually visit a clinic where the patient interacts with various healthcare practitioners. The disclosed radio signal receiving control method is to utilize the phenomenon that when IF frequency between the radio transmitter and the receiver shifts the bit duration received will change accordingly, to detect the bit duration variation of received data, thus adjusting the frequency of local oscillator signal. Because the extraction fluid comprises two phases, the pressure in the extraction system can vary. The multistate intersection provides a reconfigurable bus fabric, allowing different connection configuration for the data buses.