(d) A sensor transducer outputs an analogue signal in the ov to 5V range. The signal is then converted to a continuous-v

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D A Sensor Transducer Outputs An Analogue Signal In The Ov To 5v Range The Signal Is Then Converted To A Continuous V 1 (171.55 KiB) Viewed 19 times

(d) A sensor transducer outputs an analogue signal in the ov to 5V range. The signal is then converted to a continuous-valued discrete signal x[n] which is used to switch a multi-colour LED to optically transmit control signals to receiving instrumentation. The LED outputs RED at voltages between OV to 2V and GREEN at 2.5V to 4.5V. Upon testing, it was found that the LED was spuriously changing to GREEN when it should be RED due to data spikes in the Ov to 2V input signal; a typical representation of the noisy ov to 2V input signal is shown in Table Q2(d). Table Q2(d) 2.2 1.9 0.25 0.5 0.75 |x[nTs] nTs (s) 1.2 1.8 1 2.76 1.25 3.1 1.5 2.25 1.75 Design a suitable FIR running average filter to reduce the effects of false triggering of the LED; your filter should reduce the effects of noise in the above data sequence in five sampling intervals; all calculations must be shown.