Multiple USB Webcam Link Control System for Reading QR Codes of Micro PCR Biochip Calibration Factor Values

Detection systems in a range of fields including medical science, food safety, and environmental monitoring use miniaturized polymerase chain reactions that have lab-ona-chip technologies. The chip used for a micro PCR needs the correction factor of the chip temperature sensor for the exact measurement and control of temperature. The correction factor of the temperature sensor is obtained from the chip, generated as a quick response code, and attached to the chip. A universal serial bus camera connected to a PC reads the QR codes, and the data from the QR codes is used to correct the measured temperature. However, because several USB cameras cannot be operated on a single PC, users must bear the inconvenience of physically connecting USB cameras to PCs for use. In this thesis, we establish a system that automatically turns the USB cameras on and off by operating solid state relay modules and a micro controller unit used in micro PCSs. As a result, preparing micro PCRs for experiments has become more convenient and less time consuming.