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1840results about How to "Realize automatic switching" patented technology

Frequency band switching method based on wireless device and wireless device

The embodiments of the invention provide a frequency band switching method based on a wireless device and the wireless device. Frequency bands at least comprise a first work frequency band and a second work frequency band which are different from each other, wherein the data transmission speed of the first work frequency band is larger than that of the second work frequency band. The method comprises the steps of: when the wireless device receives an access request of an access terminal, detecting the current signal strength of the access terminal; based on the current signal strength, accessing the access terminal to the first work frequency band or the second work frequency band; detecting the real-time signal strength of the access terminal; and based on the real-time signal strength, carrying out switching between the first work frequency band and the second work frequency band. According to the embodiments of the invention, automatic access and automatic switching of the work frequency band of the wireless device are realized, and the automatic degree is high; in addition, the work frequency band is switched in time along with the change of the signal strength, the signal interference caused by other wireless devices is lowered, and the networking speed of a user is increased.
Owner:LETV HLDG BEIJING CO LTD +1

Combined navigation and positioning method of small underwater robot

The invention provides a combined navigation and positioning method of a small underwater robot, which comprises the following steps: fusing measurement data of various navigation facilities by means of a strong tracking unscented Kalman filter; using position vectors and heading angles under a navigation system as well as speed vectors and acceleration vectors under a vector system as state vectors of the filter; using the strong tracking unscented Kalman filter to implement autonomous navigation and data filtering of the underwater robot; based on horizontal position information output by a GPS (global positioning system) receiver, using the strong tracking unscented Kalman filter to implement autonomous correction and data filtering of the underwater robot; and implementing the switching between two different measurement equations (i.e. overwater and underwater measurement equations) based on the significance bit of the output signal of the GPS receiver. The invention can fuse the position, depth and attitude information of the small underwater robot measured by various navigation facilities, and can implement the autonomous navigation and autonomous correction of the small underwater robot under the interference of sea current or sea wave.
Owner:HARBIN ENG UNIV

Management equipment of dual-computer hot standby system, management method and dual-computer hot standby system

The invention discloses management equipment of a dual-computer hot standby system, a management method and the dual-computer hot standby system. The management equipment is connected with a primary server and a standby server respectively, so as to correspondingly achieve information interaction between the management equipment and the primary server, and between the management equipment and the standby server; and the management equipment is further used for judging whether the primary server can work normally and controlling automatic switching between the primary server and the standby server by sending a control command when that the primary server cannot work normally is judged. After adoption of the technical solution, through the information interaction between the management equipment and the primary server and between the management equipment and the standby server, the primary server and the standby server are monitored; the operating states of the primary server and standby server are controlled by sending the control command, so that the automatic switching between the primary server and the standby server is achieved, a brain splitting problem in the existing dual-computer hot standby system can be avoided and the stability of the dual-computer hot standby system is enhanced.
Owner:ZTE CORP

Device and method for switching BIOS (Basic Input/Output System)

The invention provides a device and a method for switching BIOS (Basic Input / Output System), which can realize automatic switching of the BIOS. The device comprises a first BIOS, a second BIOS, a south bridge module and a programmable logic device, wherein the first BIOS and the second BIOS are respectively connected with the south bridge module and respectively connected with the programmable logic device; the south bridge module is connected with the programmable logic device and is used for providing starting information of the current BIOS for the programmable logic device; and the programmable logic device is used for judging whether the current BIOS is successful or not according to the starting information and carrying out the BIOS switching and starting the other BIOS if the starting is unsuccessful. Compared with the method for activating the backup BIOS by manual interference, the invention can realize automatic switching without manual interference and save the manpower resources and cost. Meanwhile, by using the traditional hardware resources (the south bridge module and the programmable logic device) on a single board without extra circuits, the invention saves the resources and the cost of the single board.
Owner:DATANG MOBILE COMM EQUIP CO LTD

Automatic switching circuit for voltage and current measurement and method thereof

The invention discloses an automatic switching circuit and a method thereof. The circuit comprises a voltage sampling loop and a current sampling loop. The voltage sampling loop comprises two voltage sampling resistors, with the voltage sampling resistor I connected with voltage sampling resistor II in series. The voltage sampling loop is connected with the current sampling loop in parallel. The automatic switching circuit also comprises an electric relay with a NC terminal of the relay connected into the voltage sampling circuit and the controlled terminal of the relay connected with a digitoutput channel of an acquisition module of the controlled terminal. A control terminal is connected into the current sampling loop and controls action of the electric relay according to the control signals received from the digit output channels of the acquisition module, so as to connect the current sampling resistor to the circuit or disconnect the current sampling resistor with the circuit, soas to further realizing automatic switching between voltage measurement and current measurement. In the invention, automatic identification of types of acquisition voltage and current signals connected to the testing equipment can be realized, corresponding testing modes are adopted, the whole testing process is free from human interference, so that the invention features convenient application and full use of existing resources.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD

Electric vehicle driving and charging integrated control method and electric vehicle operated with same

The invention discloses an electric vehicle driving and charging integrated control method and an electric vehicle operated with the same. A driving function and a charging function are achieved through a topology system structure of the same hardware. The electric vehicle comprises a high-voltage battery, an inverter and a motor. When the electric vehicle is in a driven state, a high-voltage direct current output by the high-voltage battery is converted into a three-phase alternating current through the inverter through forward operation control of the inverter, the three-phase alternating current is output to the motor, and the motor is driven to run. When the electric vehicle is in a charged state, an external three-phase alternating current is input into the motor, then input into the inverter through a coil winding of the motor, and converted into a direct current to charge the high-voltage battery through reverse operation control of the inverter. The high-voltage battery is charged by means of the coil winding, serving as charging inductance, of the motor and by means of reverse operation of a motor driving system which is the inverter. In the charged state, the coil winding of the motor serves as the charging inductance, the inverter becomes a charger, the structure is simpler, control is easy and convenient, the size is compact, cost is low, the charging capability at full-power driving is achieved, charging speed is high, and efficiency is high.
Owner:ZHONGSHAN BROAD OCEAN

Automatic multichannel flow-like image fluorescence analysis system

The invention discloses an automatic multichannel flow-like image fluorescence analysis system including an integrated fluorescence excitation light source device, a sample stage device, a microscopic imaging device, an automatic control system and an analysis and processing system, wherein the automatic control system is connected with the integrated fluorescence excitation light source device, the sample stage device and the microscopic imaging device, and is used for respectively controlling the integrated fluorescence excitation light source device, the sample stage device and the microscopic imaging device; a microscopic optical system is formed by the integrated fluorescence excitation light source device, the sample stage device and the microscopic imaging device; the analysis and processing system is connected with the microscopic imaging device and is used for analysis and processing of images collected by the microscopic imaging device. The automatic multichannel flow-like image fluorescence analysis system can rapidly collect and analyze imaging information of a large number of samples based on the microscopic imaging technology, and also adopts a density function algorithm for analysis, so as to simultaneously obtain morphological iconography analysis results of all cells and density function flow-like data analysis results based on the large sample size.
Owner:SHANGHAI RUIYU BIOTECH

Automatic wire collecting and arranging machine

The invention discloses an automatic wire collecting and arranging machine. The machine comprises an XY type wire arranging device and a wire collecting device; the XY type wire arranging device includes a wire arranging frame, a transverse wire arranging frame, a longitudinal wire arranging frame, a first wire passing guide wheel, a second wire passing guide wheel and a wire collecting tension system; the transverse wire arranging frame is mounted on the wire arranging frame; the longitudinal wire arranging frame is movably mounted on the transverse wire arranging frame; the first wire passing guide wheel and the second wire passing guide wheel are both mounted on the wire arranging frame; the wire collecting tension system is horizontally arranged on the wire arranging frame; the longitudinal wire arranging frame is provided with a wire arranging guide wheel device capable of moving up and down; the wire collecting device includes a wire collecting frame, a wire collecting disc device, an automatic disc replacing device and a wire pressing disc device; the automatic disc replacing device is mounted at the bottom of the wire collecting disc device; the automatic disc replacing device is mounted on the wire collecting frame; and the wire collecting disc device is pressed and positioned through the wire pressing disc device in the wire collecting process. The wire arranging guide wheel device can move; and the automatic disc replacing device realizes automatic switching and wire breakage of empty and full discs without scratching product surfaces.
Owner:WUXI JUYI TONGCHUANG TECH CO LTD
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