10 results about "Equalization" patented technology

The invention discloses a method and system for positioning terminal on high-speed railway based on MR data and the method comprises the following steps: according to the MR data, determining the switch sequences of a terminal described in the figures; using the geometric algorithm to calculate the angle of the cut-out cell relative to the cell; calculating the RRU sequence in the cell; calculating the latitudes and longitudes of the cut-in point and the cut-out point: according to the latitude and longitude data of the cell inside a network management system and the distance from the terminal to the cell, calculating the latitudes and longitudes of the cut-in point Cin and the cut-out point Count through the spherical geometry method wherein the distance from the terminal to the cell is calculated through a transmission loss model; and through the statistic of the total sampling points in the cell, obtaining the latitudes and longitudes of the remaining points with an equalization method. According to the invention,, without having to mapping with the test data, it is possible to position the a terminal through the MR data and the engineering wireless parameter information operation, which overcomes the shortcoming that in prior art, a high-speed railway user positions, testing is required. Therefore, both manual labor and resources can be saved and efficiency is increased.

The invention discloses a battery pack active equalization method and a battery pack active equalization device. The battery pack active equalization device is composed of an intelligent control unit, a BMS communication unit, a differential-amplification pressure difference detection unit, and an electric energy transfer unit. The BMS communication unit acquires the current value and ampere hour from a BMS. The differential-amplification pressure difference detection unit detects the voltage of batteries one by one through a differential amplifier and sends the detection values to the intelligent control unit. The electric energy transfer unit is used for transferring energy from a battery cell to a battery cell, from a battery cell to a battery module or from a battery cell to a battery pack. The intelligent control unit receives the current value and ampere hour information acquired by the BMS communication unit and the test values of the differential-amplification pressure difference detection unit, and makes operational analysis according to the received current value and ampere hour information acquired by the BMS communication unit and the test values of the differential-amplification pressure difference detection unit so as to make the electric energy transfer unit transfer the energy of battery cells. The method and the device of the invention have the characteristics of high equalization efficiency, accurate equalization current flow and high cost performance.

An electric vehicle three-system integrated test platform belongs to the field of electric vehicles. The electric vehicle three-system integrated test platform is composed of a battery and battery management system, a motor and motor control system, and an industrial personal computer. The battery and battery management system comprises a battery cooling/heating system, a battery management system, and a battery pack. The motor and motor control system comprises a current sensor, a voltage sensor, a motor, a speed/torque sensor, an inertia disc, a dynamometer, a motor controller, and a tension controller. The battery cooling/heating system makes the batteries work within an optimal temperature range. Through the battery management system, the voltage and current of the battery can be monitored, and functions like battery equalization can be achieved. Through the motor and motor control system, the performance and properties of the motor under various conditions can be tested and analyzed. A finished vehicle control system simulates different driving conditions of an electric vehicle so as to test and optimize the regenerative braking control effect.

A memory apparatus may include a bit line sense-amplifier coupled to first and second bit lines; a first precharge unit suitable for coupling the first and second bit lines in response to a bit line equalization signal; a sense-amplifier power control unit suitable for providing a plurality of powers to the bit line sense-amplifier in response to a power control signal; and a second precharge unit suitable for individually changing each voltage level of the first and second bit lines based on a precharge control signal.

The invention discloses a photovoltaic power generation system for a new energy automobile for battery equalization. The photovoltaic power generation system comprises a solar photovoltaic array arranged at the top of the automobile, a current conversion circuit, a charging circuit, a control module, a switching circuit and a battery pack, wherein the solar photovoltaic array, the current conversion circuit, the charging circuit, the switching circuit and the battery pack are electrically connected in sequence; and the control module is electrically connected with the switching circuit and thebattery pack separately. When the photovoltaic power generation system works, the control module receives state information of various battery units in the battery pack, controls the switching circuit to charge the battery unit when the battery unit of which the power is lower than a preset power threshold exists, and cuts off connection of the charging circuit and the battery pack when the battery unit of which the power is lower than the preset power threshold does not exist. According to the photovoltaic power generation system, the service life of batteries is prolonged; and the overhighpart in the battery pack does not need to be adjusted and only the overlow part needs to be supplemented, so that the battery equalization effect is greatly improved and the energy is saved.

The invention discloses an adaptive equalization method suitable for scatter communication in the field of communication. On the premise that the complexity of the system is not increased, a linear equalizer and a nonlinear equalizer are realized by utilizing the structure of a decision feedback equalizer in combination with a channel estimation result, and compared with a scattering system adopting linear equalization, the communication capability of the system under a deep fading channel is improved; compared with a scattering system adopting decision feedback nonlinear equalization, error code diffusion under a low signal-to-noise ratio is avoided, and the communication capability under a non-deep fading channel is improved.

The invention discloses a folding airplane type scale. The folding airplane type scale has a polygonal shape in the same plane when being completely expanded, and has a paper-airplane shape when being folded. According to the folding airplane type scale, the shape is novel, the study enthusiasm of the children at the school age is easily excited; and when the folding airplane type scale is used for drawing figures, the number of the selectable angles is greatly increased, and especially the folding airplane type scale is very convenient when being used for drawing an angle equalization line.

The embodiment of the invention discloses a de-emphasis type continuous-time linear equalizer architecture, and the architecture comprises an equalizer main circuit, a de-emphasis type continuous-time linear equalizer main circuit, a de-emphasis type continuous-time linear equalizer main circuit and a de-emphasis type continuous-time linear equalizer main circuit, wherein the equalizer main circuit is used for performing first equalization processing on a first differential signal input from the main input interface so as to output a second differential signal to the auxiliary output interface; a de-emphasis circuit which is connected with an auxiliary input interface and an auxiliary output interface of the equalizer main circuit, comprises a filter and an amplifier connected with the filter, and is used for performing second equalization processing on a second differential signal input by the auxiliary output interface so as to output a third differential signal to the auxiliary input interface; wherein the equalizer main circuit outputs a fourth differential signal from the main output interface based on the first differential signal and the third differential signal. The de-emphasis type continuous-time linear equalizer architecture disclosed by the invention can improve peaking capability and make up channel loss, and has the characteristic of low cost.

The invention discloses a solid wood bending processing method with the directional bending function. The solid wood bending processing method comprises the following steps: marking a to-be-bent position on a wood blank, adopting a waterproof material to wrap the part not need to be bent tightly, then, enabling the water content of the wood to be within the proper range, softening and bending thewood, and carrying out drying, bending setting and water content equalization treatment on the wood to obtain a finished product. With adoption of the solid wood bending processing method, directionalbending of solid wood is realized, the size loss ratio and the strength loss ratio of the solid wood are greatly reduced, and the processing quality of the bent solid wood can be remarkably improved.