| abstract |
Disclosed is a sensing device and apparatus particularly suited for gathering data from the gastro-intestinal tract, but also suited for gathering data from other environments. The sensing apparatus includes a first module (1) and a second module (50). The first module has a controller (15), a transmitter (25) and an array of sensor elements (482). The controller is capable of activating one or more sensor elements in the array independently of others in the array. Each sensor element is a biological sensor for detecting the presence of the same analyte (e.g. blood) in the environment in which the sensor array is deployed. Also disclosed are suitable calibration schemes and routines of the sensors of such devices. Also disclosed are power-saving and space-saving arrangements, in particular asynchronous communication protocols between the sensing device and a base station and compensation arrangements for compensating for changes in the sensor data due to variations in the power supply of the sensing device. |