На днях заглядывал на сайт атмел и видел там в Application Notes интересный документ AVR465 - Enrgy Meter.
AVR465: Single-Phase Power/Energy Meter
with Tamper Detection
Features
• Cost-Effective and Flexible Single-Phase Energy Meter
• Fulfills IEC 61036 Accuracy Requirements for Class 1 Meters
• Detects, Signals and Continues to Measure Accurately Under At Least 20 Different
Tamper Conditions
• Design Easily Downgrades to Fit Normal Single-Phase Energy Metering
• Compact Design With Internal Flash Memory, SRAM and EEPROM
• Includes USART and Programmable I/O
• LCD Is Easily Added By Migrating To Other AVR Microcontrollers
• Secure and Reprogrammable Flash Memory Enables Flexible Firmware Updates
• One-Time, Quick, and Accurate Digital Calibration Gives Added Benefits
- Calibration Can Be Automated
- No Need for Trimming Components
- No Need for External EEPROM, as Calibration Coefficients Are Stored Internally
• Adjustable Energy Pulse Output Goes Beyond 10.000 Impulses / kWh
• Active Power, Voltage and Current Measurements are Easily Accessible Over
USART Interface
• Design Easily Migrates to Any Other AVR Microcontroller
• Low-Power AVR Microcontroller Allows Operation Down To 1.8V
Может там есть что то полезное?
Сообщение отредактировал GDI - Nov 17 2006, 13:03