摘要:
Systems and methods for determining locations of wireless sensor nodes in a tree network architecture having mesh-based features are disclosed herein. In one embodiment, a system includes a hub having one or more processing units and RF circuitry for transmitting and receiving communications with sensor nodes to enable bi-directional communications. The one or more processing units of the hub execute instructions to configure the system with a tree architecture for communications between the hub and the sensor nodes, and to configure the system temporarily with a mesh-based architecture for determining location information for the sensor nodes.
摘要:
Systems and methods for determining location information for sensor nodes in a wireless asymmetric network are disclosed herein. In one embodiment, an apparatus (e.g., hub) for providing a wireless asymmetric network architecture includes a memory for storing instructions, one or more processing units to execute instructions to establish and control communications in a wireless asymmetric network architecture, and radio frequency (RF) circuitry including multiple antennas to transmit and receive communications in the wireless asymmetric network architecture. The RF circuitry may include multiple antennas to transmit communications to a plurality of sensor nodes each having a wireless device with a transmitter and a receiver to enable bi-directional communications with the RF circuitry of the apparatus in the wireless asymmetric network architecture. The one or more processing units are configured to execute instructions to determine location information for the plurality of sensor nodes based on receiving communications from each sensor node.
摘要:
Systems and methods for implementing anti-collision features while providing a wireless asymmetric network are disclosed herein. In one embodiment, a system includes a hub having a wireless control device that is configured to control communications in the wireless asymmetric network architecture and nodes each having a wireless device with a transmitter and a receiver to enable bi-directional communications with the wireless control device of the hub. The wireless control device of the hub is configured to detect a communication from a first node of the nodes, determine whether at least a portion of the communication is unintelligible to circuitry of the hub or circuitry coupled to the hub, and determine whether a collision of communications transmitting at approximately the same time from the first node and a second node has likely occurred when the at least portion of the communication is unintelligible.
摘要:
Systems and methods for determining location information for sensor nodes in a wireless asymmetric network are disclosed herein. In one embodiment, an apparatus (e.g., hub) for providing a wireless asymmetric network architecture includes a memory for storing instructions, one or more processing units to execute instructions to establish and control communications in a wireless asymmetric network architecture, and radio frequency (RF) circuitry including multiple antennas to transmit and receive communications in the wireless asymmetric network architecture. The RF circuitry may include multiple antennas to transmit communications to a plurality of sensor nodes each having a wireless device with a transmitter and a receiver to enable bi-directional communications with the RF circuitry of the apparatus in the wireless asymmetric network architecture. The one or more processing units are configured to execute instructions to determine location information for the plurality of sensor nodes based on receiving communications from each sensor node.
摘要:
A tunneling photovoltaic (“TPV”) device using a high-κ dielectric as a tunneling layer is disclosed. The TPV includes a P-type doped silicon semiconductor substrate. Formed on its surface is an interfacial layer, between the semiconductor substrate and the high-κ tunneling layer. Formed on the high-κ tunneling layer is an electrode layer, or stack electrode layer, receiving charge carriers that tunnel through the tunneling layer, generating a current when the device is illuminated by light. The tunneling layer can be hafnium oxide or other suitable high-κ dielectrics. A method of fabricating a high-κ TPV is also disclosed. The TPV device according to the embodiments has improved internal quantum efficiency.
摘要:
Frequency divider circuits and architectures, and methods of implementing and using the same, are disclosed. In one embodiment, the frequency divider circuit includes a dynamic section that receives an input signal and outputs an intermediate signal that has a frequency lower than that of the input signal; and a static section that receives the intermediate signal and outputs a signal having a frequency that is lower than that of the intermediate signal. Stages in the dynamic and/or static section can be implemented using thin film transistors (TFTs). Embodiments of the present invention advantageously provide an approach that takes overcomes problems associated with the leakage and speed characteristics of TFTs.
摘要:
The present invention relates to aqueous liquid compositions in which surfactant system is specifically selected so that it cleanses well, but is mild and adequately foaming. Further the composition tolerate relatively large amounts of emollient (to help mildness) while, surprisingly, showing better stability.
摘要:
There is provided a monolithic three dimensional array of charge storage devices which includes a plurality of device levels, wherein at least one surface between two successive device levels is planarized by chemical mechanical polishing.
摘要:
Process variation-tolerant diodes and diode-connected thin film transistors (TFTs), printed or patterned structures (e.g., circuitry) containing such diodes and TFTs, methods of making the same, and applications of the same for identification tags and sensors are disclosed. A patterned structure comprising a complementary pair of diodes or diode-connected TFTs in series can stabilize the threshold voltage (Vt) of a diode manufactured using printing or laser writing techniques. The present invention advantageously utilizes the separation between the Vt of an NMOS TFT (Vtn) and the Vt of a PMOS TFT (Vtp) to establish and/or improve stability of a forward voltage drop across a printed or laser-written diode. Further applications of the present invention relate to reference voltage generators, voltage clamp circuits, methods of controlling voltages on related or differential signal transmission lines, and RFID and EAS tags and sensors.
摘要:
The invention relates to method of signaling temperature and/or benefit agent release using bar compositions comprising thermochromatic pigment or dye. In a preferred embodiment, the pigment is introduced in the form of a separate domain (e.g., separate chips) which separate chip or chips is combined with a surfactant-containing chips to form the final bar.