Andersson, BjörnPereira, NunoElmenreich, WilfriedTovar, EduardoPacheco, FilipeCruz, Nuno2014-02-142014-02-1420081551-3203http://hdl.handle.net/10400.22/3907The availability of small inexpensive sensor elements enables the employment of large wired or wireless sensor networks for feeding control systems. Unfortunately, the need to transmit a large number of sensor measurements over a network negatively affects the timing parameters of the control loop. This paper presents a solution to this problem by representing sensor measurements with an approximate representation-an interpolation of sensor measurements as a function of space coordinates. A priority-based medium access control (MAC) protocol is used to select the sensor messages with high information content. Thus, the information from a large number of sensor measurements is conveyed within a few messages. This approach greatly reduces the time for obtaining a snapshot of the environment state and therefore supports the real-time requirements of feedback control loops.engProcess controlTransducersData processingMeasurement system data handlingLocal area networksjournal article10.1109/TII.2008.919709