AN INTELLIGENT SYSTEM FOR AUTOMATIZED FUNCTIONAL TESTING OF DIGITAL INPUT MODULE OF DISTRIBUTED CONTROL SYSTEMS

摘要

The invention relates to an intelligent system for automatized functional testing of digital input module of distributed control systems, the distributed control system (DCS) comprises a plurality of field sensors, transmitters actuators, a plurality of input and output modules to the field elements for data acquisition, a controller unity for processing the acquired data and transmitting corresponding control commands for field operation, a human-interface (HMI) device for data display, and a data storage unit, the components of the DCS being interconnected through a plant network, the intelligent system comprising a testing device to test the digital input modules of DCS having a microcontroller with peripheral interfaces and hardware circuits to feed signals representing test parameters to the module under test, the hardware circuit being connected to the modules through a pre-fabricated cable assembly having devices to read the intensity of light emitted by a plurality of LEDs fixed on the test device to display multiple test-parameters of the module; a graphical user interface (GUI)installed on a workstation and the hardware circuit of the test device connected to the workstation through an USB port with built-in feature for assistance in troubleshooting the module, in case of failure wherein the system on activation carries out the functional test of the modules and the test results displayed.