47results about How to "Increase safety capacity" patented technology

An extendable frame work vehicle offering enhanced versatility, safety and effectiveness. The vehicle includes an adjustable frame with front and rear portions that extend or retract with respect to each other. The front portion is supported by a first pair of wheels and said rear portion is supported by a second pair of wheels. Each wheel is independently driven and steered. The vehicle also includes an engine mounted on the rear portion of the frame. Incorporated into the vehicle is an electro-hydraulic assembly which enables extension and retraction of the adjustable frame. The assembly includes a sensor-responsive microprocessor controller, at least one hydraulic pump, at least one hydraulic drive motor, and at least one valve network.

The invention discloses a joint optimization method of safety capacity and energy consumption in a wireless relay network, and relates to the field of wireless relay network cooperative communication. The method comprises the steps as follows: a safety capacity value from a source node to a destination node is restrained to be SCcon; a minimum energy consumption function of an interference node is obtained by using a beam forming technology according to the SCcon; a minimum energy consumption function of a relay node is obtained according to the SCcon; a minimum energy consumption function Dpower of a system is obtained; a minimum energy consumption value of the system is obtained at an extreme point of a minimum value of the Dpower, and the restrained safety capacity is released; and an efficiency function RSE of the system energy consumption is calculated. The invention provides a joint optimization strategy of the relay node and the interference node, and an accurate expression of equivalent safety capacity maximization corresponding to the unit energy consumption of the system is obtained, so that each part of energy reaches the maximal usage value, and the problem of balance between the safety and the energy efficiency in the wireless relay network under a single sniffing node is effectively solved.

The invention discloses a bidirectional and duplex MIMO (Multiple Input Multiple Output) relay antenna selection and safety transmission method. A duplex MIMO relay system comprises a user A, a user B, a relay and an eavesdropper, wherein the user A, the user B, the relay R and the eavesdropper E are provided with a plurality of antennas; the method comprises the following steps: acquiring a transmitting antenna of the user A, a transmitting antenna of the user B and a receiving antenna of the relay; acquiring a receiving antenna of the user A, a receiving antenna of the user B and a transmitting antenna of the relay; acquiring a receiving signal-to-noise ratio of the user A, a receiving signal-to-noise ratio of the user B and a receiving signal-to-noise ratio of the eavesdropper E based on the transmitting antenna and the receiving antenna of the user A, the transmitting antenna and the receiving antenna of the user B and the receiving antenna and the transmitting antenna of the relay; acquiring an instantaneous safety capacity of the duplex MIMO relay system based on the receiving signal-to-noise ratio of the user A, the receiving signal-to-noise ratio of the user B and the receiving signal-to-noise ratio of the eavesdropper E. According to the bidirectional and duplex MIMO relay antenna selection and safety transmission method, optimal transmitting and receiving antennas areselected and the safety capacity of the whole system can be effectively improved.

The invention discloses a nanostructure quasi-solid electrolyte for lithium-ion batteries or lithium-sulfur batteries and its preparation method and application. The nanostructure quasi-solid electrolyte is a macroscopic solid electrolyte formed by absorbing an ion-conducting agent from an inorganic-organic hybrid frame material material; its preparation method is to soak the inorganic-organic hybrid frame material in the ion-conducting agent and fully mix it under a protective atmosphere, and then volatilize the excess solvent; the prepared nanostructure quasi-solid electrolyte has higher lithium ion conductivity, which can At the same time, it replaces the organic electrolyte and separator in the traditional lithium-ion battery, which can effectively avoid the safety problems caused by the leakage of the organic electrolyte; the lithium battery assembled with the electrolyte can use metal lithium sheets as the negative electrode.

A method for establishing a first side channel under a BI-AWGN broadcast channel includes the steps that a legal receiver sends feedback information through a binary input additive white Gaussian noise broadcast channel, and a legal sender and an eavesdropper receive the feedback information influenced by noises respectively; the legal sender encodes to-be-sent information according to the received feedback information and sends the to-be-sent information through an error-free public channel, wherein the complexity degree of system obtaining is reduced; after the legal receiver receives the information of the legal sender, bit logarithm likelihood ratio information is extracted and is then decoded in a soft decision decoding mode, and a soft decision decoding algorithm with high reliability is selected for use, wherein the reliability of a main channel is improved, the quality difference of the main channel and the side channel is expanded, and the security capacity of the first side channel is further improved; the eavesdropper passively eavesdrops the information of the legal sender and conducts decoding in a soft decision decoding mode. The method is low in difficulty, high in channel security capacity and high in transmission rate.

The invention discloses a cooperation congestion strategy method based on a near-end gradient algorithm, used for a wiretap channel system. The wiretap channel system comprises a source node, a destination node, a wiretap node and relay nodes; n relay nodes transmit interference signals of a band beam forming factor independent of complex signals while the source node broadcasts the complex signals to the destination node, such that the safety capacity is obtained; group sparse penalty is introduced into a safety capacity objective function; the optimal band beam forming factor is obtained according to the safety capacity, into which the group sparse penalty is introduced; then, weights of sending signals of various relay nodes are adjusted; power limitation conditions of the relay nodes are satisfied; and thus, the maximum safety capacity is obtained. According to the cooperation congestion strategy method disclosed by the invention, in the event that the relatively high safety capacity is kept, the total power consumption of relays and the use number of the relays are greatly reduced; and the relay efficiency is increased.