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70 results about "Sensor grid" patented technology

A sensor grid integrates wireless sensor networks with grid computing concepts to enable real-time sensor data collection and the sharing of computational and storage resources for sensor data processing and management. It is an enabling technology for building large-scale infrastructures, integrating heterogeneous sensor, data and computational resources deployed over a wide area, to undertake complicated surveillance tasks such as environmental monitoring.

IPv6 (internet protocol version 6)-based wireless sensor network structure and intra-subnetwork switching method

The invention provides an IPv6 (internet protocol version 6)-based wireless sensor network structure and an intra-subnetwork switching method. The structure comprises a gateway node, fixed nodes, collaborative nodes and a mobile cluster, the mobile cluster further comprises moving nodes and a mobile cluster first node, the gateway node is used for managing and controlling communication of a sensor grid subnet with other subnets or other networks, the fixed nodes are common communication nodes and belong to full-function nodes, the collaborative nodes are used for relieving unevenness of power consumption distribution caused by network flow distribution unevenness and simultaneously used for reducing huge cost brought by communication among same-layer nodes, the mobile cluster first node is used for managing and coordinating the moving nodes and responsible for communication between the mobile cluster and the fixed nodes, a network node address of the network is a 128-digit IPv6 address, a complete 128-digit address is used for communication and addressing of the IP6V network, and 16-digit short addresses are used in intra-subnetwork switching and communication. The invention further discloses an intra-subnetwork switching method.
Owner:BEIJING JIAOTONG UNIV

System for detecting and evaluating target high-speed impact damage

The invention relates to a system for detecting and evaluating target high-speed impact damage. The surface of a target is coated with an optical fiber sensor grid in a winding mode, after bearing external high-speed impact, an optical fiber impact sensor detects the size of an impact area and sends the size to a high-speed data processing device, a pressure container sensor set arranged in a target cabin detects a damaged area in a shell of the target and sends the position information of the damaged area to the high-speed data processing device, a stress-strain sensor detects stress deformation information of the target in different positions, demodulates the information and outputs the demodulated information to the high-speed data processing device, a large dynamic inertia measurement unit detects posture information of the target after sensitive impact and sends the information to the high-speed data processing device, and the high-speed data processing device analyzes the information and distributes the analyzed information to a solid data storage device and a high-speed data remote measuring and sending device. By means of the system, damage information after target high-speed impact can be detected in real time, the damage degree is evaluated, and the problem of evaluation of the weapon system acting capacity and the weapon system killing effect is solved.
Owner:BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH

Grid pressure sensing chip and preparation method, pressure distributed sensor

The invention discloses a grid pressure sensing chip and a preparation method thereof, and a pressure distribution sensor. The grid pressure sensing chip comprises an insulating bottom layer, an upper layer, and a row and a column electrode configuration layer arranged between the insulating bottom layer and the upper layer, wherein a plurality of row electrodes are arranged in the row electrode configuration layer; a plurality of column electrodes are arranged in the column electrode configuration layer to form a grid distribution together with the row electrodes; an intermediate layer is arranged between the row and the column electrode configuration layers; a plurality of pressure sensitive bodies are arranged in the intermediate layer just at the cross points of the row and the column electrodes; each pressure sensitive body is respectively connected with one row electrode and one column electrodes at two end faces thereof; and the insulating bottom layer, the upper layer, the row and the column electrode configuration layer and the intermediate layer integrally form a rectangular sheet. The pressure distribution sensor comprises a frame, a plurality of grid pressure sensing chip spliced in the frame, and electrode connection structures arranged on inner two sides of the frame. The inventive grid pressure sensing chip and the sensor can conveniently detect the pressure distribution on a local contact surface.
Owner:XI AN JIAOTONG UNIV

Method for selecting sensor resource nodes based on energy balance and quality of service (QoS) constraints

The invention discloses a method for selecting sensor resource nodes based on energy balance and quality of service (QoS) constraints. The method comprises the following steps of: classifying the QoS constraints of a task in a wireless sensor grid environment according to characteristics of limited sensor node energy and resource scheduling in the wireless sensor grid environment; differentiating influence degree of different QoS constraints levels on resource scheduling; preferably scheduling the task with higher QoS constraint level for the tasks with different QoS constraints levels under the condition of according with QoS constraints; for the task with the same QoS constraint level, evaluating a consumption value of resource scheduling in each time when the resources are selected by using an evaluation function; and selecting the task and the resources with the minimum consumption value as a mapping result according to the balance between energy consumption of the sensor nodes and power consumption of each node. In the method, the influence of energy consumption and the QoS constraints in the wireless sensor grid on resource scheduling when resources scheduling is performed is taken into comprehensive consideration.
Owner:WUHAN UNIV OF TECH
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