Analog Devices ADuCRF101 Wireless Wind Speed and Direction Data Acquisition System Circuit Design Guide

About this manual

This document provides circuit design and evaluation information for the ADuCRF101, a battery-powered wireless data acquisition system. It integrates a 12-bit ADC, a Cortex-M3 microcontroller, and an RF ISM band transceiver to measure wind speed via reed switches and wind direction via potentiometers.

The guide details the use of the EV-ADuCRF101MK3Z evaluation board optimized for the 433 MHz frequency. It describes the system's operation in low-power hibernate modes, where the device wakes up only when necessary to transmit data, allowing a CR2032 lithium battery to last approximately one year under specific test conditions.

What's inside

• Circuit Evaluation Board
• Wireless Wind Speed and Direction Data Acquisition System
• Low-Power Hibernate Mode
• Software Flowchart
• Power Consumption Analysis
• Evaluation and Testing Setup

Frequently asked questions

What is the stated power consumption of the ADuCRF101 in sleep mode?

The device has a nominal power consumption of 1.9 µA when operating in sleep mode.

How long does the CR2032 lithium battery last with this system?

Using a single CR2032 lithium battery allows for operation of approximately 1 to 2 years.

What is the maximum transmission speed configured for this circuit?

The transmitter is set up to transmit data at a maximum speed of 300 kbps.