Wireless biological monitoring

A patient monitoring system comprising:

• a biomedical sensor configured to be attached to a patient and comprising:
• a sensor processor;
• a sensor transceiver communicatively coupled to the sensor processor;
• and
• a measurement unit comprising
• a tocodynamometer configured to sense uterine contractions and provide uterine contraction information;
• the sensor transceiver being communicatively coupled to the measurement unit and configured to transmit, wirelessly, biomedical monitoring signals indicative of the uterine contraction information;
• and
• a base station including:
• a base station transceiver;
• and
• a base station processor communicatively coupled to the base station transceiver and configured to:
• communicate wirelessly with the sensor processor via the base station transceiver and the sensor transceiver to establish a wireless communication arrangement between the biomedical sensor and the base station to inhibit devices other than the base station from determining the uterine contraction information from the biomedical monitoring signals;
• and
• send a calibration signal to the biomedical sensor to cause the biomedical sensor to calibrate the tocodynamometer, the base station processor being configured to send the calibration signal in response to the biomedical sensor coming in close proximity to the base station, or the biomedical sensor being docked with the base station, or a combination thereof.