Remote Data Acquisition System Using PIC 18F4550 and USB Interface

Abstract

This whole working of this system can be divided into two parts. First part deals with designing, building and programming an USB device which can acquire the data from the sensor and stores this data in the data memory of the device, and in second part, by connecting this device to the PC or laptop and by reading the data memory of this device, the stored data can be retrieved. This USB device or system is PIC 18F4550 based. Sensors must be connected to this system in order to sense the data. This system is programmed to read analog data available at its input, convert this data into digital value and store this digital data into the data memory of the device PIC. This process is repeated after interval of 1 minute. This system can be installed at places, from where analog data is to be recorded. In second part, by connecting this system to the computer and by reading the data memory of the PIC device, the data can be made available whenever required.