摘要:
A security zone is monitored for intrusion detection by dispersing therein a plurality of sensor nodes that, when an intrusion is detected, communicate with their neighboring sensor nodes without protocols other than a first tone. As the intrusion is detected by more sensor nodes, there is an increase in sensor node transmissions and, hence, an increase in the total power density in the security zone which is detected by a remote monitor for detecting and localizing the intrusion and providing an alert. In addition, certain of the sensor nodes also transmit a continuous second tone received by other sensor nodes. When an intrusion occurs, the transmission is blocked causing the receiving nodes to transmit the first tone to alert neighboring nodes.
摘要:
A motor transmission element includes an axle, an expandable circumferential component and multiple rolled electroactive polymer (EAP) devices. The circumferential component is located at a contact radius from the axle for connection to a different rotating body and is mechanically connected to the axle. The rolled EAP devices are mechanically connected to the circumferential component and the axle. Each rolled EAP device has a pair of input electrodes and is configured to deform substantively parallel to a roll longitudinal axis upon application of a voltage difference. Deformation of a rolled EAP device causes a change in the contact radius. A voltage difference that expands the rolled EAP device increases the contact radius, and thereby the circumference of the transmission element. By varying the voltage, a continuously variable ratio can be achieved between a rate of rotation of the transmission element and a rate of rotation of the second body.
摘要:
An optimized design for circular overmoded waveguide, of both the dielectric lined or sheathed helix types, operating in the microwave and lower millimeter wave bands.
摘要:
The present invention provides a device is provided for use with a first through fourth light beams. The device includes a first through fourth waveguides and first through fourth light scattering portions. The first waveguide has a length and a width and is arranged to receive the first light beam, wherein the length is larger than the width. The second waveguide is parallel with the first waveguide and is arranged to receive the second light beam. The third waveguide is disposed perpendicularly to and intersecting with the first waveguide and the second waveguide. The third waveguide is arranged to receive the third light beam. The fourth waveguide is parallel with the third waveguide and is disposed perpendicularly to and intersecting with the first waveguide and the second waveguide. The fourth waveguide is arranged to receive the fourth light beam. The first light scattering portion is disposed at the intersection of the first waveguide and the third waveguide. The second light scattering portion is disposed at the intersection of the second waveguide and the third waveguide. The third light scattering portion is disposed at the intersection of the first waveguide and the fourth waveguide. The fourth light scattering portion is disposed at the intersection of the second waveguide and the fourth waveguide. The light scattering portions can scatter light normal to the waveguides.
摘要:
Disclosed is a system for a 3-dimensional display that includes at least one eyepiece having first and second eyepiece sockets, having a first display contained in said first eyepiece socket associated with a first eye, two eye cameras mounted such that a first eye camera tracks eye reference points of said first eye and a second eye camera tracks reference points of a second eye, a processor for providing overall control of said at least one eyepiece; a second display; and a main processor; signals are transmitted between said main processor and said at least one eyepiece, wherein said two eye cameras track said reference points, said eyepiece transceiver transmits said reference points to said main processor via said main transceiver, said main processor generates image data based on said reference points and transmits said image data to said displays to produce a 3-dimensional image.
摘要:
Disclosed is a system for distributing information and photonic energy into at least one room of a building, comprising a lighting generator for generating visible light energy, an infrared (IR) heat generator for generating IR heat energy, and an optical fiber subsystem for transceiving at least one of the visible light energy and the IR heat energy into the at least one room, wherein the optical fiber subsystem can carry optical information signals throughout the optical fiber subsystem and radiate the optical information signals as optical wireless signals into the at least one room and receive optical wireless signals from the at least one room.
摘要:
A medical capsule is provided which includes at least a housing, transceiver, ultrasonic transducer(s), a power source, a microprocessor, and is capable of carrying a medical payload. The capsule is ingestible or implantible in a human or animal body and communicates wirelessly via ultrasonic signals with one or more transceivers attached to the outside of the body. The capsule payload can perform diagnostic, analytical, treatment or imaging functions and its position within the body can be accurately monitored. A wireless system employing the capsule and external transceiver can also include a remote monitoring station accessed by radio frequency electromagnetic signals. Further, collaborative activity among the internal capsules is enabled by an inter-capsule and capsule-to-external transceiver acoustic communications net.
摘要:
Protection is provided for software and data in single and multiple microprocessor system, including, but not limited to, local area networks (LANs), wide area networks (WANs), backplane connected architectures, etc. The data can include databases, streaming data and code. The protection is provided by employing, singly or in combination, obscurant IC coatings, tamper detection and response circuitry, multiple component modules and software code encryption to prevent software from being stolen or altered. The software or data is protected during transport, during downloading into a processor or processor network, and also during execution and storage of code or a database within a host system. The data product resulting from processing within the protecting equipment may be encrypted to be sent safely to external locations were it may be stored or de-encrypted for further use.
摘要:
A communications system for wireless transceiving of information, comprising at least one multiple optical beam scanning array transceiver located in a satellite for wirelessly transceiving the information; and at least two terminals at diverse locations capable of wirelessly transceiving the information between the terminals and the satellite, and an apparatus for determining atmospheric conditions for use in adjusting the multiple beam scanning array transceiver parameters.
摘要:
Security material such as cloth, either normal strength or armored, or fragile webbing into which electronic micro-devices are woven to detect and react to tampering of the monitored article at the scene or via a network. Also disclosed are the use of fuses connected in the cloth or webbing to further monitoring tampering and multi-layered cloth for use as circuit boards and sensors. Facilitates the monitoring of high value articles and facilities and automatically records or responds to tampering attempts to increase the level of security for personal and organizational uses.