Programmable Logic Controller Use in IR Spectrophotometer for Oncological Diagnostics

Abstract

The use of the conducted early computer processing of the data of infrared spectroscopy of bone tumors showed that healthy, benign and malignant bone tissues have a characteristic group of wave numbers in the infrared spectrum of the ash sample: 570, 610, 880, 1050, 1080, 1120, 1430, 1460 cm-1. The differences between them lie in different values of the degrees of mineralization. Thus, the degree of mineralization of benign tumors is lower in value than the degree of mineralization of healthy tissues. In turn, the degree of mineralization of malignant tumors is lower than the degree of mineralization of benign tumors. This permitted to solve the main problem - to identify the exact diagnosis of an oncological patient. However, the IR spectroscopy of the ash samples was carried out on an IR spectrophotometer separately from the mathematical processing using the previously developed computer program “Spectrum” of the obtained results of IR spectroscopy. In this regard, a new device was developed that combines an IR spectrophotometer and a programmable logic controller (PLC) for oncological diagnostics. This device allows in real time and in automatic mode to establish an accurate diagnosis of a patient's tumor. The essence of the operation of this device is to establish an accurate diagnosis by transmitting an analog signal from an IR spectrophotometer to an analog-to-digital converter of a programmable logic controller in the form of digital data, which, using the “Spectrum” program download into its RAM, processes these data and establishes an accurate diagnosis and prints the results of the diagnosis, as well as recommendations for the prevention and selection of optimal treatment methods for the disease on the controller screen.