Embedded Inductive Sensor System in Helping Industrial Machine Maintenance Problems

The inductive sensor / proximity sensor was preliminarily initiated to be used as a micro level limit switch where its potential in speed measurement was not taken advantage by the industries. Thus, looking into its potential significant contribution, this paper presents the performance of a non-contact inductive sensor which was used to remotely measure the high speed rotational spindle with high degree of accuracy. The sensor was used to generate pulse correlating the rotational speed of a machine. An experiment was conducted using a self-designed test rig to investigate its performance in counting the machine spindle speed which can help to ease the machine maintenance task for technical supports. The measuring was monitored by a specially designed LCD display, connected to an electronic circuit and a microcontroller. The test result shows that the inductive proximity sensor yields up to 95% in terms of rotational speed accuracy. The setup was made to suit a single monitoring system, while the modular based for multiple systems that integrate different operations are in progress