According to some aspects, a power regulation system for energy harvesters that lacks a battery is provided. In some embodiments, the power regulation system may receive power from multiple energy harvesters that generate energy from different sources, such as wind currents and ambient light. In these embodiments, the power regulation system may selectively provide power from one or more of the energy harvesters to a load as environmental conditions change and power itself with energy from the energy harvesters. Thereby, the power regulation system may start and operate without a battery and provide power to the load over a wider range of environmental conditions.

A wireless charging apparatus includes: a receiver configured to receive a signal from a smart key apparatus indicating whether a smart key is present in the vehicle; a frequency controller configured to control a wireless charging frequency band when the receiver receives a signal indicating that the smart key is present in the vehicle; and an antenna configured to transmit a frequency controlled by the frequency controller.

In a wireless control terminal configured to control a control target connected to a control apparatus by working in cooperation with a wireless assistant terminal capable of transmitting a predetermined control instruction for controlling the control target to the control apparatus by using a predetermined control wireless scheme with supply of power from a battery included in the wireless assistant terminal, a wireless control terminal-side battery is provided within the wireless control terminal so as to supply driving power required for control regarding emergency stop of the control target performed with a predetermined wireless scheme of the wireless control terminal. At least remaining storage power information regarding a remaining amount of storage power in the wireless control terminal-side battery is output to a notification apparatus provided in the wireless control terminal or the wireless assistant terminal.

An operation device includes an operation unit, a power generation element that generates power according to an operation of the operation unit, a battery that supplies power, and a communication unit that transmits an operation signal corresponding to the operation unit that has been operated. The communication unit transmits the operation signal by use of power supplied from the battery, in a case where a residual quantity of the battery is a predetermined residual quantity or larger. The communication unit transmits the operation signal by use of power generated by the power generation element, in a case where the residual quantity of the battery is smaller than the predetermined residual quantity.

Provided is a portable controller and associated method that provides a patient or caregiver the ability to recharge and alter the parameters of an implanted medical device, while allowing the patient substantially unobstructed mobility. To enable mobility, the controller may be worn on a belt or clothing. The controller also allows the patient to turn device stimulation on and off, check battery status, and to vary stimulation parameters within ranges that may be predefined and programmed by a clinician. The controller communicates with the medical device to retrieve information and make parameter adjustments using wireless telemetry, and it can send and receive information from several feet away from the implanted medical device. Charging of a battery contained in the implanted medical device is achieved via an inductive radio frequency link using a charge coil placed in close proximity to the medical device.

A wireless device 101 is a wireless device having identification information, and includes: an operation unit 11; a power generating unit 12 that generates electric power by operation on the operation unit 11; a signal generating unit 13 that operates by using the electric power generated by the power generating unit 12 and is capable of outputting a signal of a kind corresponding to the content of each operation on the operation unit 11; a storage unit 15 that operates by using the electric power generated by the power generating unit 12 and nonvolatilely stores the content of an output signal of the signal generating unit 13, the identification information, and reference information; and a transmission control unit 14 that compares the content of the output signal with the reference information when the operation on the operation unit 11 satisfies a predetermined condition, the content of the output signal and the reference information being stored in the storage unit 15, and transits to a transmission permission state in which transmitting a wireless signal including the identification information stored in the storage unit 15 to a different device is permitted when a result of the comparison satisfies a predetermined condition.

A wireless charging apparatus includes: a receiver configured to receive a signal from a smart key apparatus indicating whether a smart key is present in the vehicle; a frequency controller configured to control a wireless charging frequency band when the receiver receives a signal indicating that the smart key is present in the vehicle; and an antenna configured to transmit a frequency controlled by the frequency controller.

A method is provided that integrated a unique set of structural features for concealing self-powered sensor and communication devices in aesthetically neutral, or camouflaged, packages that include energy harvesting systems that provide autonomous electrical power to sensors, data processing and wireless communication components in the portable, self-contained packages. Color-matched, image-matched and/or texture-matched optical layers are formed over energy harvesting components, including photovoltaic energy collecting components. Optical layers are tuned to scatter selectable wavelengths of electromagnetic energy back in an incident direction while allowing remaining wavelengths of electromagnetic energy to pass through the layers to the energy collecting components below. The layers uniquely implement optical light scattering techniques to make the layers appear opaque when observed from a light incident side, while allowing at least 50% and as much as 80+%, of the energy impinging on the energy or incident side to pass through the layer.