Radio Technology

EnOcean - the Energy Harvesting Wirless Standard for Building Automation and Industrial Automation

EnOcean customers are located all over the world. The interoperable wireless standard of the EnOcean Alliance enables switches, gateways and sensors from different manufacturers to combine seamlessly. In the world of automation, wireless and hardwired solutions aren’t in confict with each other; they complement one another. EnOcean wireless communicates with all major wired bus systems such as KNX, LON, BACnet or TCP/IP.

Patented EnOcean energy harvesting wireless sensor solution is able to generate a signal of astonishing range from an extremely small amount of energy. From just 50 µWs a standard EnOcean energy harvesting wireless module can easily transmit a signal 300 meters (in a free field). The secret lies in the signal duration - the entire process is started, executed and completed in no more than a thousandth of a second.

Energy harvesting wireless sensor network

Energy harvesting wireless sensor network

Energy harvesting wireless standard from EnOcean

High reliability
  • Use of regulated frequency ranges with highest air time availability (approved for pulsed signals only) - 868 MHz according to R&TTE regulation EN 300220 and 315 MHz according to FCC regulation CFR-47 Part 15
  • Multiple telegram transmission with checksum
  • Short telegrams (approx. 1 ms) for little probability of collision
  • Long range: up to 30 meters in buildings and 300 meters in free field
  • Repeater available for range extension
  • One-way and bidirectional communication
Low energy need
  • High data transmission rate for sensor information of 125 kbit/s
  • Small data overhead
  • ASK modulation
Interoperability
  • Wireless protocol defined and integrated in modules
  • Sensor profiles specified and implemented by users
  • Unique transmission ID (32 bits)
Coexistence with other wireless systems
  • No interference with DECT, WLAN, PMR systems, etc
  • System design verified in industrial environment

High reliability of wireless transmission

Reliable wireless transmission in systems with many sensors - the extremely short telegrams of EnOcean wireless modules enable operation of a large number of transmitters all in the same cell. Any error rate caused by telegram collisions remains extremely low. Ex-pressed in statistics, transmission reliability is still better than 99.99% for 100 wireless sensors each transmitting their data once a minute. In other words, even large office buildings or extensive industrial plants can be equipped with high numbers of EnOcean sensors, and all operating simultaneously.