A surgical product supply system includes a cart having a first compartment and a second compartment. The first compartment has first, second, third and fourth walls. The first and second walls are constructed of radio-reflective material and the third and fourth walls are constructed of a radio-absorptive material. The first compartment has a first storage area. A first RFID antenna array is attached to the first wall and is positioned within the first storage area. The first RFID antenna array includes a first plurality of RFID antennas. A second RFID antenna array is attached to the second wall and is positioned within the first storage area. The second RFID antenna array includes a second plurality of RFID antennas. The first RFID antenna is offset relative to the second RFID antenna such that opposing central axes of the first and second RFID antennas are not colinear.

A transmitter for inductive charging of a device comprising a receiver is provided. The transmitter includes a set of coils, including a first coil having a first turn and a second turn. The first turn and the second turn are adjacent. The first turn has the first sense and the second turn has the second sense, opposed to the first sense; whereby, in use, current flows through the first turn and the second turn in opposed senses.

A sensor unit (10) is configured to be mounted in the vicinity of an electric motor (20) in a food packaging machine. The sensor unit comprises: at least one sensor device configured to generate sensor data representative of an environmental parameter of the food packaging machine, a wireless transmitter for transmitting the sensor data, and a power source for providing energy to the at least one sensor device and the wireless transmitter. The sensor unit (10) provides for ease of installation and maintenance by being self-powered through energy harvesting of a magnetic field (B1, B2) generated by the electric motor (20), by use of at least one receiving coil in the power source.

Disclosed is an apparatus for an application including a core device for the application. The apparatus includes a power (preferably RF energy) harvester connected to the core device to power the core device. Also disclosed is a method for an application. The method includes the steps of converting RF energy into usable energy. There is the step of powering the core device with the usable energy.

The invention discloses a device for collection of tiny charges in the Nano-Coulomb-range and below, comprising at least one capacitor stack build by n capacitors and 2n switches (nϵN), at least one further capacitor outside the capacitor stack as buffer capacity, at least two additional switches and a DC input source. The n capacitors are dedicated to be sequentially charged by the DC input source one after the other, wherein the 2n switches in the capacitor stack couple the n capacitors sequentially to the DC input source. The at least one further capacitor is dedicated to be charged from the n capacitors of the capacitor stack at once. Furthermore, the invention discloses a method for small charge collection, comprising the steps of sequentially charging the n capacitors of the at least one capacitor stack by coupling one capacitor after the other to the DC input source by selectively closing the switches and discharging the n capacitors of the capacitor stack into at least one further capacitor outside the capacitor stack (nϵN). Additionally, the usage of the device or the method according to the invention to collect charges from sources with electrical potentials of a few millivolts is disclosed.

A batteryless wireless sensor system includes a data acquisition system, a radio frequency (RF) transceiver, and a batteryless wireless sensor device. The RF transceiver is in communication with the data acquisition system, transmits a RF signal, and receives sensor data and provide the sensor data to the data acquisition system. The batteryless wireless sensor device includes a RF transmitter, an analog to digital converter (ADC), and a sensor. The batteryless wireless sensor harvests energy from the RF signal and generates a DC signal based on the energy harvested from the RF signal, powers up and operates the ADC and the sensor based on the DC signal, and generates sensor data. The batteryless wireless sensor then transmits the sensor data via the RF transmitter to the RF transceiver. In certain examples, the ADC is implemented as a current mode ADC.

A wireless charging system includes a platform having a substantially horizontal upper surface configured to support a vehicle and an induction coil coupled to the platform. The induction coil is configured to receive electrical energy from an energy source and generate a magnetic field above the upper surface, the magnetic field being positioned to wirelessly transfer the electrical energy to the vehicle while the vehicle is positioned atop the platform.

A method provides a mobile device positioned in a case. The mobile device has a wireless power transmitter. The case has a magnetically attractive portion. A mobile accessory having a magnetic coupling portion and a wireless power receiver is provided. The mobile accessory includes a functional component. The accessory is coupled with the case such that the wireless power transmitter of the mobile device is positioned to transfer wireless power to the wireless power receiver of the accessory. Power is wirelessly transmitted from the mobile device to the accessory. The functional component of the accessory is activated while power is transferred wirelessly.

A method for operating a wireless control device includes the starting up of a control circuit following the actuation, by a user, of a control unit coupled to an energy harvesting device to recharge an energy reserve which electrically powers the control device; the sending of a control message including a control command; the comparison of the elapsed time since the starting up of the control circuit with a first threshold value; when the elapsed time is greater than or equal to the first threshold value, the sending of a pairing request message to the electronic unit.

An electronic device includes a display, a conductive coil, a wireless charging circuit electrically connected to the conductive coil, a power management circuit, a battery; and a processor, wherein the processor may be configured to control the electronic device to: measure a current flowing from the power management circuit to the wireless charging circuit while power is transferred to an external device through the conductive coil, and adjust the power transferred to the external device through the conductive coil based on a part of a power amount preset in a signal requesting addition of power based on a value of the current being between a first threshold value and a second threshold value greater than the first threshold value.