A SOLAR POWERED DATA ACQUISITION SYSTEM

摘要

Volts have featured articles that detailed the 121 Controls Spectrum-ACE family of products. (See the March and April Design Cycle columns.)This article builds on those earlier ones and demonstrates how simple it is to snap together a few devices and construct a relatively sophisticated —but simple — solar powered Data Acquisition System (DAS).This system can be used to monitor and log/record any signal that can be represented by an analog voltage, or digital pulses or pulse widths. At the heart of this system is the Spectrum-ACE 2a product.This unit sports I28K of RAM, 32K of user programmable Flash, a one-wire four-channel 16-bitA/D converter, a real-time clock with 256 bytes of user programmable EEPROM, 20 general-purpose digital I/O lines, two UARTS, and six user programmable interrupts. Additionally, the I/O can be expanded via the external bus, I-Wire devices, or SPI devices. Just enough options to get almost anyone in trouble!