36results about How to "Avoid frequent jumps" patented technology

The invention provides a battery pack residual charging time estimation method. The method comprises the steps of calculating the pre-heating charging time, detecting the real-time temperature of eachbattery cell in the battery pack, and if the minimum value Tmin in the real-time temperature of the battery cell is detected to be lower than the set minimum charging temperature, carrying out the pre-heating to heat the battery cell to a set target temperature Ttarget, and heating according to a preset heating temperature rise rate delta T, the pre-heating charging time TIME1 being equal to delta T*(Ttarget)-Tmin); if the real-time temperature of the battery pack is larger than the set charging minimum temperature, the TIME1 being equal to 0; calculating the constant-current charging time TIME2 needed by the constant-current charging stage of the battery pack; calculating the constant-voltage charging time TIME3 required by the constant-voltage charging stage of the battery pack; and calculating the residual charging time of the battery pack T=TIME1+TIME2+TIME3.

The invention discloses a parking space state judgment method of a geomagnetic vehicle detector. The method includes the following steps that: a three-axis (XYZ) magnetoresistive sensor with a temperature compensation function is adopted; when the sensor is installed, the Z axis of the sensor is perpendicular to the ground, the Y axis and X axis of the sensor point to the adjacent edges of a parking space respectively; two axial directions (i.e. horizontal axial directions) of the Y axis and X axis are set as auxiliary reference axes and are used for monitoring the dynamic perturbation value of a magnetic field; the axial direction (i.e. vertical axial direction) of the Z axis is set as a main reference axis and is used for judging the static variation amount of the magnetic field; and a horizontal surface magnetic field dynamic perturbation value monitoring and vertical axial direction magnetic field strength variation amount determination method is used in combination to judge whether the parking space is unoccupied or unoccupied. According to the method, whether vertical axial direction magnetic field strength variation amount is larger than an uplink threshold value or is smaller than a downlink threshold value is judged, and a Mealy state machine model is used to judge the current status of the parking space. With the method adopted, interference on parking space judgment of the geomagnetic vehicle detector caused by adjacent parking spaces, surrounding passing vehicles and sensor temperature drift and background magnetic field drift can be effectively inhibited, and the problem of frequently jump of the state of a parking space can be solved.

The invention provides a shooting control method for a terminal, a shooting control device for the terminal and the terminal. The shooting control method for the terminal comprises the following steps of detecting current ambient brightness of the terminal through a ray sensor of the terminal when a preview image is collected by a front camera of the terminal; counting a brightness histogram of the preview image if detecting that the current ambient brightness is greater than preset ambient brightness; computing the current backlight degree of the terminal according to the brightness histogram; and deciding whether to open a shooting function of a high dynamic range image of the terminal according to the current backlight degree. When the front camera is utilized to shoot, the technical scheme of the invention can accurately and quickly determine whether the terminal is under the backlight environment, so that the quality of an image shot under the backlight environment is improved.

The invention provides an HDFS (Hadoop Distributed File System)-based small file combination tool and method, which is applied to a server which can carry out information interaction with each node contained in the HDFS in a cluster. The HDFS-based small file combination tool comprises a setting unit, a catalogue generation unit, a transmission unit and a reading combination unit, wherein the setting unit is used for setting a small file combination rule; the catalogue generation unit is used for determining catalogue parameters and generating an input / output catalogue according to the catalogue parameters; the transmission unit is used for setting a small file threshold value, determining the small file in each external node according to the small file threshold value and storing the determined small file into the input catalogue generated by the catalogue generation unit; and the reading combination unit is used for traversing the input catalogue, reading at least two small files which conform to the combination rule set by the setting unit in the input catalogue, combining the at least two small files into at least one data file and storing the at least one data file into the output catalogue generated by the catalogue generation unit. File processing efficiency can be effectively improved.

The invention discloses a power battery charge heating control method and a power battery charge heating control system of electric vehicles, wherein the method comprises following steps: (1) when the power battery needs to heat, determining whether the lowest temperature of a front battery box and / or the lowest temperature of a back battery box is lower than a first preset temperature; (2) if the lowest temperature of the front battery box and / or the back battery box is lower than the first preset temperature, heating the front battery box and / or the back battery box, or otherwise, comparing a difference between the lowest temperatures of the front battery box and the back battery box with a second preset temperature; (3) if the temperature difference is higher than the second preset temperature and the lowest temperature of the front battery box is higher than that of the back battery box, heating the back battery box for reducing the temperature difference, or otherwise, if the temperature difference is higher than the second preset temperature and the lowest temperature of the back battery box is higher than that of the front battery box, heating the front battery box. In the invention, according to the temperature change of the front and back battery boxes, a waiting-and-running-after control method is employed so that the temperature difference of the two battery boxes is in a reasonable range, thereby ensuring high-effective and quick charging.

A device for recording records information in blocks having logical addresses at a physical address (52) in a track on a record carrier. The logical addresses are translated into the physical addresses in dependence of defect management information, such as remapping tables, maintained in defect management areas. For avoiding remapping of real time information, such as video, a series of blocks (42) having a continuous logical address range is recorded in a corresponding allocated physical address range. In the event of a defect interrupting the allocated physical address range local offset information is generated for adding an offset to a local range of physical addresses in said address translation for skipping (61) the defect. The blocks logically following the last block before the defect are written at physical addresses following the defect, and an end portion (62) that extends beyond the allocated physical address range due to the defect, is accommodated elsewhere.

The invention relates to a temperature detecting device, a temperaure detecting method and a liquid crystal driving device. The temperature detecting device comprises a state machine, a frame frequency selection unit and a frame frequency output unit. When a current temperature value jumps around a certain critical temperature value, the state machine judges whether the difference value of the current temperature value and the critical temperature value is within the preset range; if the difference value of the current temperature value and the critical temperature value is within the preset range, the state machine determines that the current state is the previous state; if the difference value of the current temperature value and the critical temperature value is out of the preset range, the state machine determines that the current state is the state corresponding to the current temperature value. The frame frequency selection unit connected with the state machine is used for selecting the frame frequency corresponding to the current state according to the current state determined by the state machine. The frame frequency output unit connected with the frame frequency selection unit is used for outputting the frame frequency. When the temperature jumps frequently in a smaller range, the temperature detecting device can avoid the frequent jump of the frame frequency and the flicker of a liquid crystal display screen caused by the frequent jump of the frame frequency, and thus the display quality of liquid crystal display screen is enhanced.

The invention provides an HDFS mass small file processing method and system. According to the method, whether all received files currently requested to be uploaded are small files is judged, if yes, the files currently requested to be uploaded are cached respectively, the sum of sizes of all the files which are currently cached and requested to be uploaded is calculated, and the total quantity ofall the files which are currently cached and requested to be uploaded is subjected to statistical analysis; the currently calculated sum of sizes and a preset second threshold value are compared, thetotal quantity currently obtained through statistical analysis and a preset specific quantity threshold value are compared; when any of the comparison relations is established, all the files which arecurrently cached and requested to be uploaded are merged, and a file index list of all the files which are currently cached and requested to be uploaded is created; and next, the currently merged files and the corresponding file index list are uploaded to an HDFS cluster, and then all the files which are cached and requested to be uploaded are removed. In this way, access efficiency of an HDFS onmass small files can be improved.

The invention discloses a system and a method for preventing overpressure of an inlet of a piston type compressor. The system comprises a branch tee, a connecting pipeline, a pressure adjusting valve, a check valve and a pressure control loop, wherein the branch tee is arranged on a pipeline between an air inlet ball valve of the compressor or a one-inlet air cooler and the inlet of the compressor or a first-stage air inlet buffer of the compressor, the connecting pipeline is connected to the branch tee, and the pressure adjusting valve and the check valve are sequentially arranged on the connecting pipeline; the check valve is further connected to an emptying, torch or recovery system; the pressure control loop comprises a pressure sensor, a transmitter and a hard wire, wherein the pressure sensor is arranged on a pipeline between the one-inlet air cooler at the inlet of the compressor and the first-stage air inlet buffer and is used for detecting the pressure of the inlet of the compressor, the transmitter is connected to the pressure sensor, and the hard wire is connected to the pressure adjusting valve and a PLC; and the pressure of each stage of the compressor is connected to the emptying, torch or recovery system through a newly-added pressure release valve instead of being released to a one-way switch vale and / or a three-way switch valve of the inlet of the compressor through corresponding outlet pipelines of rows of air coolers.

The invention provides a method and a system of controlling the working mode of an electric vehicle, and the electric vehicle having the same. The method comprises the steps of obtaining target power of a motor at multiple speeds and multiple accelerator pedal openings through adjusting the speed and the accelerator pedal opening of the electric vehicle, and determining a control curve graph of the motor according to the target power of the motor at the multiple speeds and multiple accelerator pedal openings, wherein the control curve graph includes multiple control curves; and detecting the speed and the accelerator pedal opening of the electric vehicle, determining a working point of the electric vehicle in the control curve graph according to the speed and the accelerator pedal opening of the electric vehicle, and adjusting the target power of the motor according to the power of a control curve corresponding to the working point, to control the running of the electric vehicle. According to the method disclosed by the embodiment of the invention, the target power of the motor is adjusted through determining the control curve graph of the motor and determining the position of the working point of the electric vehicle, the manual operation is avoided, the efficiency and the load rate of the motor are improved, and the power consumption of the vehicle is reduced.

The invention discloses a double-mode hybrid vehicle and a five-parameter control method and device of a working mode of the vehicle. The method comprises the steps of obtaining the current vehicle speed of double-mode hybrid vehicle; according to the engine idle rotating speed, the tire size and the final ratio of the double-mode hybrid vehicle, obtaining the idle vehicle speed corresponding to the idle rotating speed; if the current vehicle speed is smaller than or equal to the idle vehicle speed, obtaining a first working mode distribution model; if the current vehicle speed is larger than the idle vehicle speed, obtaining a second working mode distribution model; obtaining current battery charge state and wheel required torque of a power battery of the double-mode hybrid vehicle; according to the current battery charge state, the wheel required torque and the first working mode distribution model or the second working mode distribution model, determining the working mode of the double-mode hybrid vehicle. The frequent jumping problem between the working modes is solved, the comprehensive performance of the double-mode hybrid vehicle is improved, the fuel economy is improved, and the user experience is improved.

The invention provides a charging and discharging control method and device for an automobile electronic double layer super-capacitor. The control method comprises the steps of 1, obtaining voltage and temperature information of the electronic double layer capacitor (EDLC); 2, judging whether the EDLC continues to be used or is stored for a long time, executing the step 3 if the EDLC is stored for a long time, and executing the step 4 if the EDLC continues to be used; 3, controlling the EDLC to be stored with voltage not larger than the storage voltage; 4, according to a vehicle control unit charging and discharging instruction, determining whether automobile starting discharging or automobile load discharging is performed when the EDLC needs to be discharged, and determining whether constant voltage charging or low current pre-charging or high current rapid charging is performed when the EDLC needs to be charged. The using efficiency of the EDLC can be improved on the premise that the service life of the EDLC is ensured.

The invention provides a data correction method for improving measurement precision. The data correction method comprises the steps of a, acquiring to-be-corrected continuous indirect measurement data, and establishing a segmented nonlinear correction model I and a segmented nonlinear correction model II; b, setting a hysteresis interval q-p, wherein critical thresholds satisfy a relation of q<p, and on the condition that the value of the measured continuous indirect data is lower than the critical threshold p, performing correction by means of the segmented nonlinear correction model I, and on the condition that the value of the measured continuous indirect data increase to higher than the critical threshold p, performing correction by means of the segmented nonlinear correction model II, and on the condition that the value of the measured continuous indirect data gradually reduces to lower than the critical threshold q, performing correction by means of the segmented nonlinear correction model I. According to the data correction method, data are corrected by means of a segmented nonlinear mode. Compared with a traditional segmented linear correction, the data correction method is advantageous in that less correction points in segmented nonlinear correction are realized; and furthermore after the hysteresis interval is introduced, high-frequency data jump caused by high-frequency correction model switching at critical points can be prevented.

The invention relates to the technical field of low-temperature storage tanks, in particular to a low-temperature storage tank. The low-temperature storage tank comprises a tank body used for containing low-temperature liquid and a liquid outlet device communicating with the tank body and used for conveying the low-temperature liquid outwards; the liquid outlet device comprises a liquid outlet pipe and a valve; the liquid outlet pipe comprises an initial pipe section inserted into a liquid phase space of the tank body, a buffer pipe section used for buffering low-temperature liquid and a tailend pipe section penetrating out of the tank body; the two ends of the buffer pipe section are connected with the initial pipe section and the tail end pipe section correspondingly; the buffer pipe section is fixed in the tank body and at least partially located in the gas phase space of the tank body; and the valve is arranged on the tail end pipe section and used for controlling the opening andclosing of the liquid outlet pipe. The maintenance time of the low-temperature storage tank in the standing process is greatly prolonged; frequent tripping of the safety valve is avoided, the discharge amount of BOG gas is greatly reduced, economic loss and potential safety hazards are reduced, and therefore economic efficiency and sociality are guaranteed.

The invention discloses a liquefied natural gas fuel system capable of immediately detecting a vacuum degree and a detection method thereof. The liquefied natural gas fuel system capable of immediately detecting the vacuum degree comprises a gas cylinder, a fixing frame, a fluid-filled pipeline, a gas return pipeline, a liquid outlet pipeline, a supercharging system and the like. The liquefied natural gas fuel system capable of immediately detecting the vacuum degree and the detection method thereof have the beneficial effects that an ionization gauge is arranged at the back of a liquefied natural gas vehicle-mounted gas cylinder shell; the vacuum degree data of a heat insulating layer can be directly read out by the ionization gauge at all times and places; the numerical value of the leakage and degassing rate of an interlayer can be figured out according to the data, thereby judging whether the liquefied natural gas vehicle-mounted fuel system conforms to quality standards, and preventing releasing of plenty of liquefied natural gas caused by frequent jumping up of a safety valve resulting from the poor heat preservation effect of the liquefied natural gas vehicle-mounted fuel system from causing explosion accidents.

The invention relates to the technical field of automobile air conditioners, in particular to an automobile air conditioner control system. The automobile air conditioner control system comprises an air conditioner controller, a first relay, a second relay, a third relay, a fourth relay, an air conditioner pressure switch, a compressor, a condenser fan and an ECU. A low-potential signal can be synchronously output through a first terminal and a second terminal of the air conditioner controller, so that the condenser fan and the compressor synchronously work; and the problem that an existing air conditioner system is poor in air conditioner refrigerating effect during engine idling is solved, frequent tripping of the pressure switch is avoided, and the service life of the compressor is prolonged.

The invention discloses an explosion-proof door of a waste heat boiler. The explosion-proof door comprises an explosion-proof door connecting pipe, an explosion-proof door cover and a limiting assembly; an outlet is formed in one end of the explosion-proof door connecting pipe; the explosion-proof door cover seals and covers the outlet in a rotating mode; the limiting assembly comprises a balancing weight rotating shaft, a limiting block and balancing weights; the limiting block is arranged on the explosion-proof door connecting pipe; the balancing weight rotating shaft is connected to the explosion-proof door cover, synchronously rotates with the explosion-proof door cover and is limited on the limiting block after rotating so as to limit the maximum opening angle of the explosion-proof door cover; and the multiple balancing weights are detachably connected to the balancing weight rotating shaft, so that the jump pressure of the explosion-proof door cover can be adjusted. According tothe explosion-proof door, after deflagration occurs in the explosion-proof door and sufficient pressure is accumulated, the explosion-proof door cover and the balancing weight rotating shaft jointlyrotate and are opened under the action of the impact force, and when the explosion-proof door cover rotates to the position where the balancing weight rotating shaft is matched with the limiting block, the explosion-proof door cover is opened to the maximum angle for pressure relief; rapid reset can be realized after pressure relief; and the jump pressure is adjustable, and the use reliability ishigh.

The invention provides a method and a system of controlling the working mode of an electric vehicle, and the electric vehicle having the same. The method comprises the steps of obtaining target power of a motor at multiple speeds and multiple accelerator pedal openings through adjusting the speed and the accelerator pedal opening of the electric vehicle, and determining a control curve graph of the motor according to the target power of the motor at the multiple speeds and multiple accelerator pedal openings, wherein the control curve graph includes multiple control curves; and detecting the speed and the accelerator pedal opening of the electric vehicle, determining a working point of the electric vehicle in the control curve graph according to the speed and the accelerator pedal opening of the electric vehicle, and adjusting the target power of the motor according to the power of a control curve corresponding to the working point, to control the running of the electric vehicle. According to the method disclosed by the embodiment of the invention, the target power of the motor is adjusted through determining the control curve graph of the motor and determining the position of the working point of the electric vehicle, the manual operation is avoided, the efficiency and the load rate of the motor are improved, and the power consumption of the vehicle is reduced.

Disclosed is a light load control circuit and the method accordingly where the synchronous rectification is latched off when the light load condition is detected for several successive cycles.

The invention relates to the technical field of batteries, and provides a method for estimating battery charging time, including: establishing a charging time MAP table; the MAP table includes N temperature intervals, M voltage intervals and element Anm; the N The interval formed by the temperature intervals is single-valued and continuous, and the interval formed by the M voltage intervals is single-valued and continuous; the element Anm in the MAP table indicates that when the charging current is the requested current, the temperature is within the temperature interval n When , the charging time from the low-voltage terminal of the voltage interval m to the high-voltage terminal; based on the initial charging temperature of the battery and its change value, obtain the corresponding P voltage intervals that the battery has experienced from the initial charging voltage to the charging cut-off voltage. The P charging times A1,...,Ap; 1≤P≤M; the P charging times are summed to obtain the estimated charging time of the battery. Embodiments of the present invention are suitable for estimating battery charging time.

The invention provides a data correction method for improving measurement precision. The data correction method comprises the steps of a, acquiring to-be-corrected continuous indirect measurement data, and establishing a segmented nonlinear correction model I and a segmented nonlinear correction model II; b, setting a hysteresis interval q-p, wherein critical thresholds satisfy a relation of q<p, and on the condition that the value of the measured continuous indirect data is lower than the critical threshold p, performing correction by means of the segmented nonlinear correction model I, and on the condition that the value of the measured continuous indirect data increase to higher than the critical threshold p, performing correction by means of the segmented nonlinear correction model II, and on the condition that the value of the measured continuous indirect data gradually reduces to lower than the critical threshold q, performing correction by means of the segmented nonlinear correction model I. According to the data correction method, data are corrected by means of a segmented nonlinear mode. Compared with a traditional segmented linear correction, the data correction method is advantageous in that less correction points in segmented nonlinear correction are realized; and furthermore after the hysteresis interval is introduced, high-frequency data jump caused by high-frequency correction model switching at critical points can be prevented.

The present invention proposes a multi-mode radio frequency front-end circuit, including a power amplifier and a low noise amplifier respectively coupled with the antenna; the power amplifier is composed of at least a first amplification stage and a second amplification stage; the output of the first amplification stage is passed through The first switch is coupled and connected to the output end of the low noise amplifier to form a first additional path; the output end of the low noise amplifier is also connected to its input end through a second switch to form a second additional path; the mode switching control circuit is used to control the first The on-off state of the switch and the second switch also controls the first amplifier stage, the second amplifier stage, and the low-noise amplifier to be in the working state or disabled state, so that the radio frequency front-end circuit is in the required working mode. Through the above circuit structure, the circuit design is simplified, so that the improved RF front-end circuit can have both the advantages of high efficiency in the low power output mode of the power amplifier and the low noise figure in the low gain mode of the low noise amplifier.

The invention discloses a display panel, its driving method and a display device. When each row of sub-pixels of the display panel is displaying, when the data signals corresponding to the row of sub-pixels are not all common voltage signals, the source driving circuit sends Each output terminal outputs a data signal, and the source control circuit provides the data signal output by each output terminal to the corresponding data line; when the data signals corresponding to the sub-pixels in this row are all common voltage signals, the data output by the source drive circuit to each output terminal The voltage amplitude of the signal is the same as the voltage amplitude of the data signal output from the previous row of sub-pixels to each output terminal when displaying, and the source control circuit provides a common voltage signal to each data line. In this way, when the data signals corresponding to a row of sub-pixels are all common voltage signals, the signal on the data line is provided by the source control circuit, thereby avoiding frequent jumps in the voltage amplitude of the data signal output by the source drive circuit to the same data line , to reduce the power consumption of the display panel.

The invention relates to a temperature detecting device, a temperaure detecting method and a liquid crystal driving device. The temperature detecting device comprises a state machine, a frame frequency selection unit and a frame frequency output unit. When a current temperature value jumps around a certain critical temperature value, the state machine judges whether the difference value of the current temperature value and the critical temperature value is within the preset range; if the difference value of the current temperature value and the critical temperature value is within the preset range, the state machine determines that the current state is the previous state; if the difference value of the current temperature value and the critical temperature value is out of the preset range,the state machine determines that the current state is the state corresponding to the current temperature value. The frame frequency selection unit connected with the state machine is used for selecting the frame frequency corresponding to the current state according to the current state determined by the state machine. The frame frequency output unit connected with the frame frequency selectionunit is used for outputting the frame frequency. When the temperature jumps frequently in a smaller range, the temperature detecting device can avoid the frequent jump of the frame frequency and the flicker of a liquid crystal display screen caused by the frequent jump of the frame frequency, and thus the display quality of liquid crystal display screen is enhanced.

The invention belongs to the technical field of satellite navigation, and discloses a Beidou weak signal capturing method and system.The method comprises the steps that firstly, carrier stripping is conducted on sampled data, chip merging is conducted, then repeated utilization, Doppler stripping and data folding of code merging data are achieved through an overlapping and folding method, and consumption of hardware resources is reduced; and carrying out code parallel coherence on the data block and the local pseudo code through FFT and IFFT to obtain coherence values of all code phases. Performing difference on coherent values of different code phases through an inter-symbol difference algorithm to avoid the influence of NH code hopping and navigation data hopping; performing coherence on the differential data after Doppler compensation, improving the signal-to-noise ratio of the signal, performing incoherence on the data, improving the capture sensitivity, and finally judging whether to capture the satellite signal or not through threshold judgment. According to the invention, Beidou D2 navigation data of-146dBm and D1 navigation data of-145dBm are finally captured.

The invention relates to a report classification method and a device, computer equipment and a storage medium. The method comprises the steps of obtaining a current report and a historical report; andextracting a current tab and current header data in the current report, and extracting a historical tab and historical header data in the historical report; and determining the tab similarity betweenthe current tab and the historical tab, and determining the historical tabs of which the tab similarity is greater than a preset tab similarity threshold as candidate tabs; and determining header similarity between the current header data and historical header data corresponding to the candidate tabs; and when the maximum header similarity is greater than a preset header similarity threshold, determining the report type to which the candidate tab corresponding to the maximum header similarity belongs as the report type of the current tab; and displaying the reports corresponding to the current tabs belonging to the same report category on the same target page. By adopting the method, the report operation efficiency can be improved.

The invention discloses an SOA-based intrusive type system which is composed of an integrated management platform, an ESB and an integration platform SDK. The integrated management platform has the functions of login, unified authentication, a unified interface, unified user management, organization management, unified resource management and menu management. The ESB is used for releasing a master data synchronous service, a task message service and a login authentication service of the integration platform. The integration platform SDK mainly comprises a resource access controller, a local interface and other tools. The SOA-based intrusive type system has the advantages that a user can see all system function modules within the authority limit range only through one-time login, can conduct direct access operation, and avoids frequent skipping among different systems; the higher safety guarantee is offered, the probability that user information is illegally intercepted and damaged during synchronization among the systems is decreased, and the safety is improved correspondingly; authority limit abuse caused after information is shared is prevented, and standards are provided for development of various services systems.