83results about How to "Reduce complexity" patented technology

The invention discloses a configuration method and system of the hierarchical storage of a storage gateway and relates to the technical field of the storage. The method comprises the steps that: a virtualization gateway virtualizes a configuration port, and multiple virtual configuration ports are virtualized on the configuration port; the storage gateway obtains a LUN with the configuration of media attributes from multiple virtual hosts which are set by a back-end array and are in one-to-one correspondence with multiple virtual configuration port; the storage gateway carries out hierarchicalstorage and creation on a storage medium connected to the storage gateway according to the obtained LUN with the configuration of the media attributes so as to classify different types of storage media into corresponding types of storage media layers. According to the method and the system, the attributes of the identified LUN on a gateway backend storage can be quickly set on a gateway product,and the complexity of setting the hierarchical storage on the gateway and the probability of configuration errors are reduced.

The invention relates to an ignition method for achieving rapid normal-temperature starting of a hydroxylamine nitrate engine. The ignition method comprises the steps that a small amount of propellantenters a catalytic bed in a pulse ignition mode, the temperature of the catalytic bed is gradually increased from the initial temperature through slow decomposition and heat release of the small amount of propellant in the catalytic bed, after the temperature of the catalytic bed and the pressure of a combustion chamber reach certain values, engine steady-state work is carried out, and ignition of rapid normal-temperature starting of the hydroxylamine nitrate engine can be achieved. An ignition mode that the catalytic bed needs to be preheated in advance before an upper-stage engine of a carrier rocket is ignited is effectively achieved, the ignition response time of the engine can be effectively shortened, the bearable load of the system is improved, and meanwhile the development cost ofthe engine is reduced.

The invention relates to a centralized multi-operating-condition thermal management system of a new energy vehicle. The centralized multi-operating-condition thermal management system comprises a refrigerant circuit and a cooling liquid circuit; the refrigerant circuit comprises a compressor, a condenser connected with the compressor, a passenger compartment refrigerant branch circuit and a power battery pack refrigerant branch circuit, wherein the passenger compartment refrigerant branch circuit and the power battery pack branch circuit are connected to the two ends of the compressor and the condenser in parallel; the passenger compartment refrigerant branch circuit comprises an electromagnetic valve and an evaporator for heating a passenger compartment; the power battery pack branch circuit comprises an electromagnetic valve and a heat exchanger for lowering the temperature of cooling liquid; the cooling liquid circuit comprises a PTC heater, a passenger compartment cooling liquid branch circuit and a power battery pack cooling liquid branch circuit, wherein the passenger compartment cooling liquid branch circuit and the power battery pack cooling liquid branch circuit are connected to the two ends of the PTC heater in parallel; the passenger compartment cooling liquid branch circuit comprises a pump and a heater for heating the passenger compartment; the power battery pack cooling liquid branch circuit comprises an electromagnetic valve, a pump, a heat exchanger, a power battery pack, a reflux valve and a one-way valve. According to the centralized multi-operating-condition thermal management system of the new energy vehicle, one set of refrigerating/heating elements can be used for conducting independent thermal management on the passenger compartment and the power battery pack of the new energy vehicle.

The invention discloses a fire fighting apparatus source tracing system based on wireless communication. The fire fighting apparatus source tracing system based on wireless communication is characterized by comprising multiple detection devices used for detecting the condition for triggering fire alerting, multiple alarm giving devices used for giving out an alarm when parameters detected by the detection device exceed the threshold value, and multiple extinguishment devices used for executing the extinguishment measure when the parameters detected by the detection device exceed the thresholdvalue, and each of the detection devices, the alarm giving devices and the extinguishment devices comprises a UID storage unit; the UID storage units are used for storing one set of unique UID sequence numbers. The system has the beneficial effects that the fire fighting apparatus source tracing system based on wireless communication is provided, through a remote system, related information of each fire fighting apparatus can be determined, and the tediousness of fixed-period checking can be saved.

The invention discloses a full digital automatic gain control device and a full digital automatic gain control implementation method. The method comprises the following steps of: detecting a highest significant bit W of an input digital signal h, and determining the direction and the number of bits of shifting operation according to a difference N between the highest significant bit W and a reference value B; carrying out N-bit shift operation on the input digital signal h, and carrying out the N-p bits shift operation on the input digital signal r, wherein the p is a positive integer of more than or equal to 0; performing fast Fourier transform (FFT) on the shifted input digital signals r and h respectively, so as to obtain a frequency-domain digital signal FFT (r) and a frequency-domain digital signal FFT (h) respectively; detecting a maximum value of the frequency-domain digital signal FFT (h), and using the maximum value as an address to obtain a gain coefficient K through table lookup; and multiplying the frequency-domain digital signal FFT (r) and the frequency-domain digital signal FFT (h) by the gain coefficient K respectively to obtain required output digital signals R and H. By the device and the method, the two paths of input digital signals r and h can be adjusted simultaneously, robustness is good, and complexity for implementation is low.

The invention belongs to the technical field of wireless communication, and discloses a path division multiple access method based on a large-scale MIMO-OTFS. The path division multiple access methodcomprises the steps of: acquiring a large-scale MIMO-OTFS angle-delay-Doppler domain received signal model and angle-delay-Doppler domain uplink primary and secondary 3D channel models through OTFS modulation; designing a user angle domain grouping and path scheduling algorithm by utilizing the dispersion characteristic of a large-scale MIMO-OTFS channel in an-angle-delay-Doppler domain, and reasonably allocating angle domain resources at a user side; receiving pilot frequencies and effective data of different users at scheduled receiving grid point positions, using a least square estimator for estimating channels thereof, and carrying out data recovery through adopting a maximum ratio combination method; and guiding a downlink access process by using a user grouping and path scheduling algorithm in uplink transmission. By adopting the path division multiple access method , interference among multiple users can be reduced, large-scale access of the users is realized, and the spectrum utilization rate is effectively improved.