The pig that looks after railway lines

Abstract

Cambridge Consultants' optical and signal processing work has produced one of the most efficacious monitoring systems yet developed: a sensor system that measures railway track deflection in situ as Dr Bob Jones explains.

Citation

(1986), "The pig that looks after railway lines", Sensor Review, Vol. 6 No. 4, pp. 199-201. https://doi.org/10.1108/eb007706