آر اف (فرکانس رادیویی) و بی‌سیم ماژول‌ فرستنده‌گیرنده و مودم آر اف

Product Attributes

Introduction

The extremely power saving RF transmitter module STM 300 enables the realization of wireless and maintenance free sensors and actuators such as room operating panels, motion sensors or valve actuators for heating control. Power supply is provided by an external energy harvester, e.g. a small solar cell or a thermal harvester. An energy storage device can be connected externally to bridge periods with no supply from the energy harvester. A voltage limiter avoids damaging of the module when the supply from the energy harvester gets too high. The module provides a user configurable cyclic wake up (every 1, 10 or 100 sec.). After wake up a radio telegram (input data, unique 32 bit sensor ID, checksum) will be transmitted in case of a change of any digital input value compared to the last sending or in case of a significant change of measured analogue values (different input sensitivities can be selected). In case of no relevant input change a redundant retransmission signal is sent after a user configurable number of wakeups to announce all current values. In addition a wake up can be triggered externally.

Features

• 3 A/D converter inputs
• 4 digital inputs
• Configurable wake-up and transmission cycle
• Wake-up via Wake pins
• Voltage limiter
• Threshold detector
• Application notes for calculation of energy budgets and management of external energy storages
• Energy Harvesting made easy with EnOcean wireless standard
• Integrated 16MHz 8051 CPU with 32KB FLASH and 2kB SRAM
• Receiver functionality
• Various power down and sleep modes down to 0.2μA current consumption
• Up to 16 configurable I/Os
• 10bit ADC, 8bit DAC