Data logger for humidity and temperature measurement based on a programmable SoC

This paper presents the development of an embedded system based on a programmable system-on-chip (PSoC), namely a temperature and humidity data logger. The main characteristics of the device consist in low power consumption, small dimensions and the possibility of easily reconfiguring the firmware. This later feature allows the use of a large number of probes in different combinations and in different scenarios. The recorded values are saved in an EPROM and can be retrieved by printing them on thermal paper or by copying them on an USB flash drive. The real-time clock, current measured values, the active alarms and the number of recordings in memory are displayed continuously on the attached LCD.