Portable system for data collection of measuring transducers

The device is intended for storage and data transmission of measuring transducers and is especially adapted for field work on mobile machines, where there is no possibility of connection to a power source and/or a wired connection to a computer. In addition, it is characterized by a number of features that cannot be found on the market combined in one device. Battery power allows several days of autonomous operation, depending on the configuration of the measuring transducers and the use of wireless transmission. The compact case of small dimensions is equipped with magnets for practical attachment of the device to the metal construction of the machines. It is possible to connect up to 8 analog converters with AD conversion resolution of 13 bits, and an arbitrary (conditional) number of digital sensors with communication via SPI, I2C or UART ports. Local data storage is achieved with an SD card with a capacity of up to 32 Gb, while the optional inclusion of a Bluetooth or LoRa module enables wireless transmission to a distance of up to 800 m. Sampling/storage frequencies are possible from 40 Hz to 500 Hz depending on the configuration (number of transducers, storage on an SD card or wireless transmission). The device is based on the Atmel Atmega328P microcontroller, which allows programming using the open source platform Arduino IDE.