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.

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.

There is provided a power transmission device for contactless power transmission, comprising a transmitter device and a receiver device, wherein the transmitter device has a first transmitter with a first transmitting frequency and at least one second transmitter with a second transmitting frequency, the second transmitting frequency is different from the first transmitting frequency, and the first transmitter is galvanically separated from the second transmitter, wherein the first transmitter has a first axis of symmetry and the second transmitter has a second axis of symmetry, and the first axis of symmetry of the first transmitter and the second axis of symmetry of the second transmitter are at least approximately coincident in a transmitter axis of symmetry, and wherein the receiver device has a first receiver associated with the first transmitter and a second receiver associated with the second transmitter.

According to one embodiment, a power supply device includes a voltage conversion circuit configured to convert a voltage of power generated by a power generation element; a plurality of power storage elements connected in parallel with respective load circuits; a switch circuit configured to switch an electrical connection between the voltage conversion circuit and each of the plurality of power storage elements; and a control circuit configured to measure voltages of the plurality of power storage elements and to control the switch circuit based on the measured voltages.

A remote control device with assured button functionality includes a case, at least one key located on the case, and at least one key circuit located under the at least one key. Each of the at least one keys corresponds to a compensation capacitance, which also connects to at least one key circuit. A capacitance is generated when a user presses the touch panel and the at least one key circuit is thereby unbalanced, to trigger the remote to generate command signal when the at least one key circuit is electrically connected to the at least one compensation capacitance through the capacitance.

A wireless control system includes multiple wireless transmitters and a control circuit configured to transmit information from the wireless transmitters, wherein the control circuit is configured to selectably enable and disable each of the wireless transmitters.

A method is provided that integrates 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.

According to one embodiment, a power supply device includes a voltage conversion circuit configured to convert a voltage of power generated by a power generation element; a plurality of power storage elements connected in parallel with respective load circuits; a switch circuit configured to switch an electrical connection between the voltage conversion circuit and each of the plurality of power storage elements; and a control circuit configured to measure voltages of the plurality of power storage elements and to control the switch circuit based on the measured voltages.

A remote controller 101 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 able to output 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; and a transmission control unit 14 that operates by using the electric power generated by the power generating unit 12 and transmits a wireless signal including information corresponding to the content of the output signal stored in the storage unit 15 when the operation on the operation unit 11 satisfies a predetermined condition.

The current embodiments provide a switch device for a wireless pushbutton, wherein the switch device comprising an energy conversion mechanism, a signal output mechanism, an actuation device, and a plurality of encoding contacts. The actuation device may be configured to establish contact with at least one of the plurality of encoding contacts when a first quantity of an actuation force is applied for generating an encoded signal. The actuation device may be configured to activate the energy conversion mechanism to generate energy when a second quantity of an actuation force greater than the first quantity is applied to the activation device. The signal output mechanism may be configured to transmit a wireless output signal using the encoded signal when the energy conversion mechanism is activated.