33 results about "Damage sensing" patented technology

A composite includes a matrix material and a unidirectional array of carbon nanotube- infused fibers disposed in a portion of the matrix material. An article includes this composite and a network of electrodes disposed about the periphery of the composite. The electrodes send and receive an electrical charge. Such an article is included in a system, along with sensing circuitry and a source for supplying current to the network of electrodes. Such a system is used in a method that includes subjecting the article to a load that causes a condition in the composite including strain, fatigue, damage, or cracks, and monitoring the location of the condition.

The invention relates to an automatic diagnostic device and diagnostic method of a long-distance magnetic array position sensing system. The automatic diagnostic device comprises a plurality of sections of circuit boards, namely a first section of circuit board, a second section of circuit board,..., and an Nth section of circuit board, which are connected head to tail by a fixing device, wherein the first section of circuit board or the Nth section of circuit board is fixed with a main control circuit board through the fixing device; the main control circuit board is provided with a main control unit; the first section of circuit board, the second section of circuit,..., and the Nth section of circuit board are respectively provided with a first diagnosis circuit, a second diagnosis circuit,..., and an Nth diagnosis circuit; and the first diagnosis circuit, the second diagnosis circuit,..., and the Nth diagnosis circuit are simultaneously connected with a main control system. The device and the method provided by the invention have the following advantages: the design cost is reduced, the interference is reduced, the system stability is improved, and a shift register cascade is used for the long-distance expansion to realize no restrictions on the measuring distance theoretically; and in addition, the system can be ensured to work in the case of individual damaged sensing element and obviously improve the power-on reliability of the long-distance scanning of the system.

The invention discloses a fingerprint collection method and device. The fingerprint collection method includes: determining a damaged sensing unit in a plurality of sensing units included in a fingerprint sensor; when a fingerprint collection event is detected, using the plurality of sensing units to collect fingerprint images, and using the damaged sensing unit collected The fingerprint image value is set as a random image value to form a fingerprint image collected by the fingerprint sensor. The technical solutions of the embodiments of the present invention reduce the similarity of the fingerprint image values ​​collected by the damage sensing unit at different times, thereby reducing the false recognition rate of fingerprints.

The invention relates to a link damage perception energy efficiency routing method for distinguishing services in an elastic optical network, and belongs to the technical field of optical fiber communications. The method designs a path weight formula based on load balancing for comprehensively considering the link frequency spectrum state and the transmission damage, so as to reduce the nonlineardamage among different channels. Based on the path weight formula, an edge-separated maximum weight path is selected for high-quality services; and an edge-separated shortest energy efficiency path isselected for low-quality services. During spectrum allocation, the spectrum is partitioned according to the ratio of the service rate, and a spectrum allocation mode combining first-time hit and tail-end hit is adopted to reduce the cross-phase modulation between the services of different transmission rates. At the same time, in order to reduce the probability that existing services are blocked since the current transmission service causes damage to the existing services in the network, an optical path reconfiguration mechanism of a physical damage blocking service is designed. The link damage perception energy efficiency routing method for distinguishing the services in the elastic optical network provided by the invention effectively improves the spectrum resource utilization rate and reduces the bandwidth blocking rate and the service transmission energy consumption.