33results about How to "Consumption balance" patented technology

The invention discloses a safety start method of a tree topology in an IPv6 over low power wireless personal area network (6LoWPAN), belonging to the filed of networks. The method comprises mutual authentication and trust assessment. Before node deployment, a network deployer allocates a unique identification (ID) and key for each node, so that mutual authentication can be achieved between two nodes if only the ID of the opposite party is known; and when a child node selects father nodes to access a network, trust assessment is carried out on the candidate father nodes, and a utility value method in a multi-target objective decision technology is utilized to comprehensively assess three indexes, namely the number of hops from the father node to a base station, consumed energy and time delay, so as to select an optimal father node. According to the method, node energy is saved, mutual authentication can be carried out by only IDs of the nodes and a small amount of information exchange but without the participation of a base station, and attack of malicious node can be resisted. Due to the introduction of trust assessment, the sideness solely depending on energy or hops is avoided, the energy consumption of the whole network is balanced, and the life of the network is prolonged, thus the method can be applied to scenes with small amount of node movement.

The invention provides a multi-metric quantity route discovery and establishment method based on AODV (Ad hoc On-Demand Distance Vector Routing). According to the method, nodes in a wireless network are required to maintain the number of hops and three metric quantities: node residual energy, an energy loss rate and node density; the four metric quantities are packaged into a data structure; in a route discovery stage, the metric quantities in an RREQ (route request) and the metric quantities maintained by the nodes are compared and updated according to rules stated by the method; and further an optimum route path is discovered and established. According to the method, through introduction of the reasonable metric quantities in a route establishment stage, the problem that the service quality of the wireless network is seriously influenced due to the fact that the node energy consumption is imbalanced and information channels are congested is effectively avoided. The communication load balance and communication efficiency of links are effectively improved, the stability of the links is improved, the node energy consumption is balanced, and the service life of the wireless network is prolonged.

The invention discloses an ignition unit and a low energy consumption diesel engine exhaust gas treatment system based on the ignition unit, comprising an ignition housing with an inlet and an outlet, a nozzle pipe, a first swing check valve for avoiding backflow of high-temperature exhaust gas, and an air inlet The cavity of the flame outlet and the glow plug used for ignition, the nozzle pipe is connected with the peripheral fuel supply unit through the fuel solenoid valve and extends into the cavity through the first swing check valve, and the glow plug is fixed on the ignition shell body and extend into the cavity. In the present invention, fresh air and fuel are mixed in the ignition unit and then ignited. The three-way air passage receives the high-temperature mixed airflow and the exhaust airflow, and the formed total airflow enters the DPF and oxidizes and removes accumulated soot; it reduces the impact on PGM in DOC and DPF Coating requirements, and reduce the sensitivity of the system to the sulfur content in fuel, while the regeneration of low exhaust gas flow reduces energy consumption; improves fuel economy, making it suitable for in-use car modification applications.