Create an Energy-harvesting BLE Switch For Battery-less IoT

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ON Semiconductor offers Bluetooth Low Energy Switch reference design that operates entirely from harvested energy to enable truly self-powered IoT applications

energy harvestingEnergy harvesting is becoming increasingly important for IoT deployments since it eliminates the need for power delivery, battery costs and replacement costs coupled with its inherent eco-friendliness. ON Semiconductor has introduced its BLE Switch reference design that operates entirely from harvested energy making it a perfect starting point for self-powered and battery-less Bluetooth IoT applications, requiring no additional energy source.

Application examples include wall and lighting control, building automation, and asset tracking.

Develop battery-less IoT applications with the Energy Harvesting BLE Switch Reference design

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The Energy Harvesting BLE Switch is based on a low-power RSL10 SIP with the innovative energy-harvesting technology developed by ZF Friedrichshafen AG, to provide the ideal platform for a range of IoT applications.

Featuring a fully-integrated antenna, RSL10 radio, and all passive components; the RSL10 SIP simplifies system design and minimizes the Bill of Materials, according to the firm.

The reference design is provided with complete BoM, schematics, PCB layout and Gerber files, as well as free use of the switch-side firmware.

The source code included provides a platform from which to develop application code, and the documentation includes detailed explanations of how to customize the firmware and connect the reference design to a Bluetooth Low Energy scanner application running on a smart phone or tablet.

Exclusive new features of the switch include the absence of a buck/boost converter for simplified design-in and improved performance, as well as a smart dimming function.

The technology developed by ZF captures the energy transferred when a user presses a button. The switch converts energy from kinetic to electromagnetic, and stores it for use by the RSL10 SIP. Each time the button is pressed the fully integrated energy harvesting solution generates 300 μJ. This is enough to meet the extremely low power requirements of the RSL10 SIP, which is just 62.5nW in deep sleep and only 10 mW when transceiving.

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The design is compatible with the ON Semiconductor IoT Development Kit and Bluetooth Low Energy IoT Development Kit, which include a comprehensive portfolio of sensors, connectivity and actuator devices.

Applications

Home/Building Automation
Wall switches
Intrusion detection
Door Closing/Opening
Remote sensing

Mobile Health
Hospital bed monitoring
Step counting
Activity counting

Industrial
Push button
Emergency Break
Collision detection and alarm
Asset tracking

Transportation
Truck/Vehicle counting

For further details on the design, click here.

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