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PD IEC TR 63071 pdf free download

PD IEC TR 63071 pdf free download.Power supplying scheme for wearable systems and equipment.
4.3.2 Charging and connections
When charging is necessary, it is carried out either while a wearable device is worn or when it is taken off. In case of a legacy wearable wristwatch, major charging shall be carried out when it is removed. In this case, charging is the same as the electronic wristwatch described in 4.2. The potential new application is charging when it is worn.
Charging when the wearable device is worn requires the live generation of electric power and a method for supplying the electric power to the client’s wearable device. In the case of the wearable device incorporating the generator, the supplying of power and the control are executed with an internal connection, and no specific standard is needed.
When a wearable device and the power-supplying device are located in different parts of the user’s body, the existing technologies and standards can be considered to provide power and control. In the case where the power source and device are connected by wire, existing technologies and USB standards such as USB Type-C1 specified in IEC 62680-1-3 can be suitable. In the case where a wireless connection is desired, industry technologies can be suitable for specific product designs. However, further study would be needed to determine feasibility of wireless charging standardization for on-body charging applications to study potential interoperability limitations between different physical product designs, locations of the wearable device and the power-supplying device, efficiency, stringent regulatory requirements for health and safety.
The content of this document includes:
• physical connection:
— wired connector, cable or wireless connection;
• logical connection:
— protocols for power supply and control, and information.
4.3.3 Generator utilizing physical activity of organism
There are various types of energy sources from the physical activity of an organism.
Movement and other activities of an organism generate electric power called energy harvest.
The activities of the body are:
• natural action or movement,
• intentional action or movement,
• pressure,
• thermal gradient,
• perspiration,
• any physiological phenomenon.
The energy-harvesting device or system converts these activities into electric power or any other kind of energy. These energy-harvesting devices or systems are, for example, solar cells, Peltier elements, kinetic devices, chemical battery cells, MEMS devices and conventional motors used as generators.
This document does not mention these energy-harvesting methods and devices, because of concerns with respect to interoperability and measurement methods of the energy-harvesting device.
5 Use case
5.1 General
Any wearable device is the object of a power-supplying system. The existing major power supplying devices are a primary or secondary battery that needs changing or charging. Wearable devices need to work continuously as standalone and autonomous devices that require energy-harvesting power-supplying devices in order to be independent devices or systems.
Typical use cases are:
• watch, eyeglasses, earphones and sensor-type wearable devices that require powersupplying devices,
• power-supplying devices that are part of elements of wearable devices,
• standalone power-supplying devices with wired or wireless connections to wearable devices,
• garment or textile-type power-supplying devices with surface or membrane connection.PD IEC TR 63071  pdf download.

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