About The Author

Dr. Wald Siskens is Chief Executive Officer at EnOcean. He is an expert in managing innovative technical companies and experienced the spirit of Silicon Valley for many years. His personal enthusiasm for the EnOcean world is to spread the excitement that sensors can be powered with ambient energy.

2 Comments

  1. Thank you for your reports on the use of energy harvesting to power many Internet pf Thing devices wirelessly in the future removing the requirement for batteries

    Powering the Internet of Wireless Things: Battery or Battery-less – Part 1 & 2

    However will the energy harvesting systems require supercapacitors to store the energy to be used in the IoT devices in various systems – such as wireless lighting – building automation- smart homes & powering wearable technologies. Or are there other power energy systems that can be used with Energy harvesting without the need for supercapacitors

    Do you have any reports regarding the use of supercapacitors as energy storage systems that maybe used in the IoT devices please
    I look forward to your reply

    Kind regards

    Mr J Michael

  2. Jack,

    Super capacitors are indeed our preferred energy storage elements for all radio sensors that need permanent activity. Examples are, that least a timer is running to wake the system periodically, or the system wakes up upon sensor values are exceeded. These capacitors show long lasting operation, unlimited charge cycles and are crucial for real maintenance-free devices.
    In applications, where this is not important, other energy storage elements as e.g. Li-ion rechargeable batteries can be used as well. These require however a high degree of design knowledge to make them really long lasting and maintenance-free (otherwise they die, like the battery in your laptop, after a few years).
    For the application of energy harvesting switches for light, blinds etc. we do not need super capacitors. The simple reason is, that we have enough energy for radio transmission available upon each button push – these small amounts of energy can be stored short term (some milliseconds) in conventional capacitors.

    Best regards
    Frank Schmidt

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