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  • Прототип информационно-измерительной системы мониторинга температур комплектующих элементов контактным способом

Article

Прототип информационно-измерительной системы мониторинга температур комплектующих элементов контактным способом

In work authors describe the information-measuring system prototype for the collection and processing of measurement information on components temperatures installed on the assembled circuit board. The prototype is designed for monitoring of printed circuit assemblies in the manufacturing plant, as well as diagnostics troubleshooting of printed circuit assemblies at maintenance during operation. The conclusion about possible defects in printed circuit assemblies is the diagnostic result. The prototype represents a hardware-software complex. The complex is managed by the myRIO module of the National Instruments Company. The module software provides management of the coordinate table, temperature measurement and information exchange with the PC. PC software includes an ASONIKA-T system, interface program to the myRIO module, complex management program and fault diagnosis program. For each printed circuit assemblies nominal temperatures of the completing elements in the ASONIKA-T system are calculated. The elements temperatures when faults are calculated separately. The base of faults which includes nominal temperatures of elements, temperatures deviations and possible defects is formed. When the control a printed circuit assembly is mounted on the coordinate table, above the printed circuit assembly the thermocouple is moved to the set position measurements and is pressed nestles on the completing elements. To reduce measurement errors when developing a prototype the authors have solved the problem of reducing the contact resistance between the thermocouple and element, as well as the problem of stabilization of the clamping force of a thermocouple to the element. The software, developed by authors for the prototype, is the original.