Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

465results about How to "Guaranteed normal startup" patented technology

Security reinforcement method for credible container based on Docker

The invention discloses a security reinforcement method for a credible container based on Docker used for performing security reinforcement on a Docker container system, and realizes the credible container based on the Docker, as well is applied to a server cluster based on the Docker. The credible container based on the Docker comprises a container program Docker, a container credible measurement module, a progress monitoring module and a network communication monitoring module, wherein the container credible measurement module comprises a credible booting sub-module and a file measurement sub-module. The reinforcement method focuses on the credibility of the Docker container; a credible computing and integrity measurement technology is matched with a real-time monitoring module to reinforce the container system based on the Docker, so that the container and a mirror image are prevented from tampering; and meanwhile, a network communication behavior of the container is limited, and an inner progress of the container is monitored, so as to realize the security reinforced credible container.
Owner:WUHAN UNIV

Control method and device for electric quantity of low-voltage accumulator

The invention provides a control method and device for the electric quantity of a low-voltage accumulator. After the voltage value of the low-voltage accumulator is obtained, if the voltage value of the low-voltage accumulator is lower than a preset voltage threshold, low-voltage warning information is sent to user terminal equipment; after electrifying allowance information sent by the user terminal equipment according to the low-voltage warning information is obtained, a control command is sent to a high-voltage power battery, and the high-voltage power battery is controlled to charge the low-voltage accumulator. Through the adoption of the control method for the electric quantity of the low-voltage accumulator disclosed by the invention, when the voltage value of the low-voltage accumulator is lower than the preset voltage threshold, the low-voltage accumulator is charged by the high-voltage power battery, so that the voltage of the low-voltage accumulator is kept balanced, and the normal start of low-voltage electric equipment including a vehicle electronic control unit and the like is guaranteed.
Owner:GUANGZHOU AUTOMOBILE GROUP CO LTD

Application accelerating method and device

The invention provides an application accelerating method and device. The method comprises the steps that a list of applications to be accelerated of a mobile terminal is obtained; the applications to be accelerated in the list of applications to be accelerated are monitored; when it is monitored that any application to be accelerated is started, the partial internal storage occupied by progresses except fixed progresses is released, and the fixed processes include a system progress which cannot be terminated and / or an application progress which cannot be terminated according to a user order. The released partial internal storage is used for accelerating the applications to be accelerated. According to the application accelerating method, the internal storage occupied by other progresses can be released, the application started at current is accelerated, and the effects of accelerating the application starting process and improving the application running fluency are achieved.
Owner:BEIJING QIHOO TECH CO LTD +1

Lubricating oil heating method of frequency converting air-conditioner compressor

The invention relates to a method for heating lube of a frequency conversion air-conditioning compressor. A PWM signal is output through a singlechip; two IGBTs for driving the frequency conversion compressor which are connected with a two-phase coil in the compressor respectively and form a loop are opened; and the coil is heated; one of the IGBTs is closed so that the coil produces opposing electromotive force to form a continuous current loop. The method has the following characteristics: under the environment of lower outdoor temperature, the method allows a frequency conversion air conditioner to carry out heating and melting on the lube effectively, ensures the normal startup of the compressor, avoids the occurrence of faults caused by overcurrent of the compressor, does not add extra hardware equipment, only improves the heating method on the basis of the prior circuit and saves the expense for purchasing an additional electric heating belt.
Owner:SUZHOU SAMSUNG ELECTRONICS CO LTD

Method, device, server and terminal units for managing application programs

ActiveCN103246595ARequirements to reduce technology costsAvoid the impact of normal operating speed and processing powerHardware monitoringProgram loading/initiatingFile associationApplication software
The invention discloses a method, a device, a server and terminal units for managing application programs, and belongs to the field of terminal units. The method includes acquiring application program and file association lists; and managing the application programs according to the application program and file association lists. The server acquires the application program and file association lists according to statistics of application program messages of the application programs and file operation behavior, the application program messages of the application programs are reported by the terminal units, and the application programs invoke reading and writing interfaces of a system to execute the file operation behavior. The method, the device, the server and the terminal units have the advantages that the application program and file association lists are acquired from the server, files associated with the application programs can be managed while the application programs are managed owing to the application programs and the associated files which are indicated in the lists, the requirement on the technical cost of users of the terminal units is lowered, the influence of accumulated junk files on the normal running speed and the processing capacity of each terminal unit is prevented, and starting and normal running of each terminal unit are guaranteed.
Owner:XIAOMI INC

Measurement mechanism-based credible PLC starting method

The invention discloses a measurement mechanism-based credible PLC starting method. The measurement mechanism-based credible PLC starting method comprises the following steps: performing firmware verification initialization; reading firmware information for calculating PLC; performing one-by-one verification and storage; performing operating stating stage verification. The method provided by the invention adopts an industrial-grade chip with a trusted function as a hardware calculation core, the PLC extends the Flash bus to be loaded by the hardware of the method provided by the invention, the hardware of the method provided by the invention identifies necessary starting information, the necessary starting file of the PLC system is subjected to integrity verification by an integrity verification method, and the PLC system is guaranteed to be in a credible state after being started. By the method, a safe and credible industrial control system operating environment can be built on the basis of guaranteeing the accuracy and the practicability of terminal equipment safety.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI

Off-board charger detection device and method

The invention discloses an off-board charger detection device and method. The off-board charger detection device comprises a direct current side data collecting module, a load module, a battery management system simulation module, a charger state information collecting module and a data processing and control module. The direct current side data collecting module is used for collecting the direct current side voltage and current of an off-board charger in real time. The load module is provided with a direct current charging interface, connected to the off-board charger via a charging connection wire and used for simulating a charging battery. The battery management system simulation module is connected to the load module and used for sending a communication instruction to the off-board charger. The charger state information collecting module is used for collecting the voltage, current and charging state information detected by the off-board charger. The data processing and control module is used for controlling the battery management system simulation module to send the communication instruction to the off-board charger, processing the data collected by the direct current side data collecting module and the charger state information collecting module to generate first processing data, and detecting the off-board charger according to preset parameters, the collected data and the first processing data. The off-board charger detection device and method can achieve the function of automatically detecting the site of the off-board charger.
Owner:STATE GRID CORP OF CHINA +2

High efficiency methanol-water hydrogen production system and hydrogen production method thereof

The invention reveals a high efficiency methanol-water hydrogen production system and a hydrogen production method thereof. The system comprises a liquid reservoir vessel, a heat exchanger, a vaporizer, a reforming chamber and a separation chamber, wherein the liquid reservoir vessel, the heat exchanger, the vaporizer, the reforming chamber and the separation chamber are successively connected through pipelines, a ceramic membrane separator and a metallic palladium membrane separator are arranged in the separation chamber, gas entering into the separation chamber is pretreated by the ceramic membrane separator to obtain high purity hydrogen, and then the high purity hydrogen enters into the metallic palladium membrane separator so as to obtain hydrogen with higher purity. According to the high efficiency methanol-water hydrogen production system and the hydrogen production method thereof, the high purity hydrogen (with a purity of about 99%) is separated from reformed gas through the ceramic membrane separator at first, and then the hydrogen with higher purity (more than 99.9999%) is separated through the metallic palladium membrane separator.
Owner:广州市移电科技有限公司

Power battery of motor vehicle provided with air conditioning system

The invention discloses a power battery of a motor vehicle provided with an air conditioning system, which is technical characterized in that a heat exchanging fan is arranged on the inner surface of a top cover of a battery packaging box, a battery cell is arranged in the battery packaging box below the heat exchanging fan, a heat conducting plate is arranged at the bottom of the battery packaging box below the battery cell, a refrigerant pipe and a hot water pipe are arranged inside the heat conducting plate, a high-voltage wire connector and a low-voltage wire connector are arranged on a battery control device, an air blower is arranged at an air inlet of the vehicle body, a fan heater and an evaporator are arranged on a ventilation pipeline between the air blower and an air outlet of a passenger compartment, an electric air conditioning compressor and a condenser are connected in series and then connected in parallel with the refrigerant pipe inside the heat conducting plate on the evaporator, and a water circulation pump and a water storage tank provided with a heater are connected in series and then connected in parallel with the hot water pipe inside the heat conducting plate on the fan heater. The power battery of the motor vehicle adopts the water cooling method and air cooling method simultaneously. The air conditioner takes the heat of the battery away or heats the battery, and the fan is used for causing forced convection so as to guarantee heat balance of the battery and further guarantee the working performance and service life of the lithium battery.
Owner:BRILLIANCE AUTO

Power supply system for automobile

An electricity supply system is mounted on vehicle such as motorbicycle. The electricity supply system includes an electric generator 20 drived by a motor 10, onboard battery 24, and electric load, such as spark plug 16 and fuel injector 13. In order to start the motor 10, checking battery voltage, opening charged circuit for the battery 24 when the voltage is lower than preset level. Through initial rotation of the motor 10, generating electric power in the electric generator 20 for providing exculsively to the electric load to start successfully the motor 10. After the electric power generated in the electric generator 20 gets to enough high level, the battery 24 is charged by the electric power generated in the electric generator 20.
Owner:DENSO CORP

Method and system for license control of Linux operating system

The invention relates to a method for the license control of a Linux operating system. The method comprises two parts, namely a self protection mechanism and a license management mechanism respectively, wherein the self protection mechanism is implemented by both a kernel layer license control self-inspection module and an application layer license communication module; and the license management mechanism is implemented through a license communication module by an application layer license control module and an application layer license distribution module. The self protection mechanism loads the license control self-inspection module into a kernel space by utilizing the loading of a Linux system kernel, and the license control self-inspection module finishes integrity inspection on the license control function of the system and performs corresponding processing according to an inspection result. By the method, the problem that the license control function of the conventional software or system is cancelled can be effectively solved, and the validity of a license file in a distribution process can be ensured by multiple encryption, so the license file is prevented from being randomly falsified. The method has universality, and can be used for realizing user license control in a Linux environment.
Owner:CHINA STANDARD SOFTWARE

DC-DC converter control circuit and converter

The invention is suitable for the field of circuits, and provides a boosting DC-DC converter control circuit and a converter. The boosting DC-DC converter control circuit comprises a main control circuit, a starting circuit and a drive circuit. The boosting DC-DC converter control circuit also comprises a power supply switching circuit, wherein the power supply switching circuit is used for comparing an input voltage with an output voltage of the converter, switching into high-voltage output and supplying power to the starting circuit and the drive circuit. According to the invention, the input voltage VIN and the output voltage VOUT are automatically compared and switched, and a high voltage is selected for supplying power to the starting circuit and the drive circuit, thus the problem that partial starting circuit can not normally work when the input voltage VIN is lowered to 0.9V in the traditional circuit is solved, and normal starting of the boosting DC-DC converter is ensured.
Owner:ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD

Method and apparatus for starting terminal device system program

The invention provides a method and apparatus for starting a terminal device system program. The method comprises the following steps: dividing a plurality of program modules into a plurality of task groups, wherein at least one program module in each task group has a dependency relationship with the program modules in other task groups, and the program modules in the each task group have no dependency relationship. By means of the grouping manner, the dependency relationship between the program modules in the system program becomes clearer, when the system programs are started according to actual needs, related task groups can be directly adjusted according to the dependency relationship between the program modules, thereby enhancing the configuration performance and the expandability of starting the system program. In the method, the task groups are sequentially started according to the dependency relationship between the corresponding program modules, therefore the normal start of the program modules in the task groups can be ensured; and the program modules in the task groups are started in a parallel mode, which is conducive to shortening the start time of the system program and improving the utilization rate of the system resources.
Owner:VIDAA(荷兰)国际控股有限公司

Anti-power-down linux system startup method

The invention discloses a power-down prevention Linux system startup method. The method is a union file system method and comprises an initialization step and a folder recovery step. In the initialization step, four key folders such as / etc, / root, / var and / tmp of a root file system are remounted into four empty read-write folders of a memory file system in a way of remounting of a file system; in the folder recovery step, the first three empty read-write folders of a memory file system is combined with corresponding read-only system folders on a disk by calling related commands of union folders, so that the first three empty read-write folders comprise the contents of the corresponding read-only system folders on the disk. By the method, in the process of system startup and operation, system folders are written in the memory instead of the disk, so the file system is protected and a perfect power-down prevention scheme is realized.
Owner:CHINA STANDARD SOFTWARE

Method and system for preventing insufficient voltage of low-voltage battery after new energy vehicle is parked

The invention provides a method and system for preventing insufficient voltage of a low-voltage battery after a new energy vehicle is parked. As for the new energy vehicle, the low-voltage storage battery suffers from self-discharging when the vehicle is parked for a long time, and the integral controller and the battery management system of the parked vehicle are under a sleeping or off state, and cannot start DCDC on demand to enable a high voltage system to charge for the low-voltage storage battery. The problem that the integral controller cannot be started and the relay cannot be driven due to excessively-low voltage so that the vehicle cannot be started after the vehicle is parked for a long time can be resolved. With an independent voltage monitoring module, the battery management system and a DC voltage converting module can be awakened actively, when the voltage of the storage battery is lower than the set threshold value. Energy can be compensated for the low-voltage storagebattery, and the normal starting of a vehicle after being parked for a long time can be guaranteed.
Owner:HENAN SENYUAN HEAVY IND

Method and system for electricity lacking protection of automobile storage battery

The invention provides a method and system for electricity lacking protection of an automobile storage battery. The method includes step S01 of determining whether a current state of a vehicle is a locked and dormant state, and if the current state of the vehicle is the locked and dormant state, executing step S02; step S02 of determining whether a current storage battery pack is in a state of being to undergo electricity lacking, and if the current storage battery pack is in the state of being to undergo electricity lacking, executing step S03; step S03 of judging whether the current gear position of the vehicle is at a gear P or N, and if the current gear position of the vehicle is at the gear P or N, executing step S04; step S04 of determining whether a current engine fuel amount is greater than or equal to a preset value, and if the current engine fuel amount is greater than or equal to the preset value, executing step S05; and step S05 of starting an engine to charge the storage battery pack. According to the method, the engine can be started without a key, the vehicle is more intelligent, the problem of storage battery electricity lacking resulting from long-time standing storage of the vehicle is solved, and it is ensured that the vehicle can still be started normally after being stored for a long period of time.
Owner:GEELY AUTOMOBILE INST NINGBO CO LTD +1

Control method of refrigerator applicable to high-temperature environment

The invention relates to a control method of a refrigerator applicable to a high-temperature environment. The refrigerator comprises a refrigerating chamber and a chilling chamber, wherein the chilling chamber is internally provided with a compressor, a fan and a chilling temperature sensor; the chilling chamber is internally provided with a refrigerating temperature sensor; an air flue between the refrigerating chamber and the chilling chamber is internally provided with an air door; the compressor, the fan, the air door, the chilling temperature sensor and the refrigerating temperature sensor are connected with a control board arranged in the refrigerator; and the control method comprises the following steps that the control board selects a control mode of the refrigerator to be a common mode or a delaying optimized mode according to a chilling temperature detected by the chilling temperature sensor and then converts into the common mode. According to the control method disclosed by the invention, delaying optimized control is adopted at a high-temperature environment, and chilling and refrigerating load peak values are staggered, so that the total load peak value of the system is reduced, and the normal starting and operation of the compressor are guaranteed. Furthermore, on the premise of not increasing the cost, the starting and operation problems of the refrigerator under the high-temperature environment are solved, so that the stability and reliability of using the refrigerator are improved.
Owner:HISENSE RONSHEN GUANGDONG REFRIGERATOR

Air cooled heat pump unit and control method, device and system thereof

The invention discloses an air cooled heat pump unit and a control method, device and system of the unit. The control method of the air cooled heat pump unit comprises the steps of obtaining air suction pressure detected by an air suction pressure sensor; the air suction pressure is compared with the first preset air suction pressure; if the air suction pressure obtained continuously within the first preset time segment is smaller than or equal to the first preset air suction pressure, a by-pass mechanism is started, and the opening degree of a main loop electronic expansion valve is adjusted to the preset opening degree. The technical problem that when an existing air cooled heat pump unit is started under the condition of low circumstance temperature and low water temperature, frequent low-pressure protection appears, and even starting cannot be achieved is solved.
Owner:GREE ELECTRIC APPLIANCES INC

Power-failure-preventing upgrading method of Linux system

The invention discloses a power-failure-preventing upgrading method of a Linux system. In the method, before system upgrading, system backup is performed; upgrading states are marked in the system upgrading process; according to different upgrading states and upgrading types of the Linux system, system upgrading restoration is performed; and particularly, in the state of upgrading failure, the system upgrading restoration is realized in a mode of realizing system rollback by calling a standby system, so that the Linux system can be normally started.
Owner:CHINA STANDARD SOFTWARE

Electricity-electricity hybrid fuel cell vehicle hydrothermal management system and control method thereof

The invention discloses an electricity-electricity hybrid fuel cell vehicle hydrothermal management system and a control method thereof. The electricity-electricity hybrid fuel cell vehicle hydrothermal management system comprises a fuel cell stack, a power cell system, a power cell thermal management system, a fuel cell cooling system, a controller and a detection unit, wherein the power cell thermal management system comprises a first electric three-way valve, a PTC heater, a second electric three-way valve, the power cell system, a second water pump, a third electric three-way valve, a radiator fan and a radiator, the fuel cell cooling system comprises a first water pump, the first electric three-way valve, the radiator, the radiator fan, the third electric three-way valve, a heat preservation water storage tank, the fuel cell stack and a condenser, the detection unit comprises two temperature detection units and a pressure detection unit, and the controller controls the working states of the PTC heater, the water pump and the radiator fan according to the detection results of the temperature detection units, so that low-temperature cold start and constant-temperature operationstate control of the fuel cell system and the power cell system are carried out.
Owner:JIANGSU UNIV

Preheating system for battery of electric vehicle

The invention discloses a preheating system for a battery of an electric vehicle. The problem is solved that the activity of the battery of the electric vehicle declines in winter due to the low environmental temperature and then causes decline of the cruising ability. The preheating system for the battery of the electric vehicle is characterized in that a preheating device comprises an external temperature detection unit used for detecting the temperature outside the vehicle and outputting an external temperature detection signal and a control unit which is provided with a floor reference value signal in advance and coupled to the external temperature detection unit; the control unit controls a preheating component to be started or not according to the comparison situation between the external temperature detection signal and the floor reference value signal and a remote control signal of a remote control device; when the external temperature detection signal is lower than the floor reference value signal and the remote control device controls vehicle doors to be unlocked, the control unit controls the preheating component to be started. According to the system, before starting, if the external temperature is lower than a floor reference value, the preheating component is started to conduct preheating on the main lithium battery, so that it is guaranteed that the main lithiumbattery works at a proper environmental temperature.
Owner:邱诗俊

Drying wardrobe for ship

The invention discloses a drying wardrobe for a ship. A wardrobe body is fixed on a ship body and is internally divided into a clothes hanging chamber and a cabin, a convection fan is installed at the top of the clothes hanging chamber, and a heater and an ozone generator are installed in an induced draft channel of the convection fan. A compressor, a frequency converter, an evaporator, an electronic expansion valve, a drain pipe, a circulating fan and a condenser are installed in the cabin, an air inlet door is installed on an opening on the outer side of the lower portion of the cabin, and an air outlet door is installed on an opening on the upper portion of the cabin. A controller collects signals of humid wind temperature, air suction pressure, air suction temperature, hot air temperature, the temperature of the clothes hanging chamber and humidity and the like to be used for controlling a circulating air door, the frequency converter, the air inlet door, the electronic expansion valve, the circulating fan, the air outlet door, the convection fan, the ozone generator and the heater to work. The drying wardrobe is low in clothes drying energy consumption, clothes are clean and do not deform, hot and humidity gas is not discharging into the cabin in the drying process, automatic preheating can be performed when the ship sails in a cold region, normal starting is guaranteed, forced heat removal can be performed when the ship sails in a hot region, and the drying wardrobe can work normally.
Owner:JIANGSU UNIV OF SCI & TECH

Dual-BIOS Flash control system and method of server

The invention particularly relates to a dual-BIOS Flash control system and method of a server. The dual-BIOS Flash control system and method of the server involve a CPLD chip, a BMC chip, a PCH chip,an IO Expander chip, a Switch chip and a dual-BIOS Flash chip; the CPLD chip and the PCH chip are each connected to the BMC chip through a GPIO bus, the IO Expander chip is connected to the BMC chip through an IIC bus, and meanwhile the PCH chip and the IO Expander chip are further connected to the Switch chip and connected to the dual-BIOS Flash chip though the Switch chip. By means of the dual-BIOS Flash control system and method of the server, not only can redundancy BIOS Flash switching be provided when the BIOS Flash function is not normal, it is ensured that the server is started normally, and the overall reliability is improved, but also the selection of BIOS Flash during last-time starting can be remembered, therefore the overall switching speed can be improved, and the time of starting up is shortened.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD

Hydrogen fuel cell automobile hydrothermal management system and control method thereof

The invention relates to a hydrogen fuel cell automobile hydrothermal management system which comprises a fuel cell, a main water pump and a heater which are sequentially communicated through a pipeline to form a circulation loop, and further comprises a first three-way valve, an inlet of the three-way valve I is communicated with an outlet of the fuel cell through a pipeline, and one outlet is communicated with the main water pump through a pipeline, the other outlet is communicated with an inlet of heating equipment in an automobile passenger cabin through a pipeline, and an outlet of the heating equipment is communicated with a pipeline between the three-way valve I and the main water pump through a pipeline; a pipeline between the fuel cell and the heater is communicated with a pipeline between the three-way valve I and the heating equipment through a heating loop, and a valve is mounted on the heating loop; the invention further provides a control method of the hydrogen fuel cellautomobile hydrothermal management system. The system has the beneficial effects that the flowing path of cooling liquid is optimized when the automobile passenger cabin does not need to be heated, the heating capacity in the automobile passenger cabin is improved while normal operation of the system is guaranteed, and energy consumption is reduced.
Owner:武汉海亿新能源科技有限公司

Method for ensuring normal start-up of Linux operating system

The invention discloses a method for ensuring a normal start-up of a Linux operating system. The method comprises the following steps that during hard disk partition, a partition that is the same size as an original root partition is created as a snapshot partition; the Linux operating system is installed in the original root partition; an original initramfs mirror file in / boot is modified; the steps to modify the original initramfs mirror file in the / boot comprise: using a gunzip command and a cpio command to unpack the original initramfs mirror file to a predetermined catalog; adding a device-mapping software package to the predetermined catalog; when a dmsetup command does not exist in a sbin subcatalog, the dmsetup command in the device-mapper software package is put in the sbin subcatalog; editing an init script program, modifying a code of the init script program that mounts the root file system, and adding a corresponding code logic; generating a new initramfs mirror file to overwrite the original initramfs mirror file. By adopting the method, when a file system of the hard disk is damaged, the system can be automatically restored and be started up normally without manual participation, and normal start-up of the operating system is ensured.
Owner:BANGYAN TECH

Long-acting integrated power supply system based on thin-film solar battery and charging method

The invention discloses a long-acting integrated power supply system based on a thin-film solar battery. The long-acting integrated power supply system comprises energy storage equipment which comprises a thin-film photovoltaic module, a super capacitor module, a charging and discharging controller, a voltage regulator module and a lithium battery component, wherein an output end of the thin-film photovoltaic module is connected with an input end of the super capacitor module; the output end of the super capacitor module is connected with the input end of the charging and discharging controller; the output end of the charging and discharging controller is connected with the voltage regulator module; the lithium battery component is connected with the charging and discharging controller; the thin-film photovoltaic module is a flexible or rigid thin-film solar battery; and the rated voltage of the thin-film photovoltaic module is higher than the maximal voltage of the lithium battery component. According to the long-acting integrated power supply system, which is light, efficient and long in lifetime, based on the thin-film solar battery and the charging method, the weak light power generating performance of the thin-film photovoltaic module and the low-voltage charging performance of the super capacitor are fully utilized; and the long-acting integrated power supply system has the advantages of efficient weak light power generation and high overall system efficiency.
Owner:浙江尚越新能源开发有限公司

A start method for DC frequency conversion compressor

The present invention discloses a method for actuating a direct current frequency conversion compressor. The method comprises the following procedures: 11) detecting a true vale of the electric voltage of the power supply source; and 12) according to the obtained true value of electric voltage of the power supply source, adjusting the duty ratio of the pulse width modulating signal of the frequency conversion driving electric power source to the number of the true value of the electric voltage of the power supply source, and actuating the direct current frequency conversion compressor. The duty ratio is corresponding to the voltage of the electric power source and can lead to that the direct current frequency conversion compressor obtains the direct current voltage required in normal actuating. The method provided by the invention can facilitate that the direct current voltage outputted by the frequency conversion electric power source is in an appropriate range and the direct current motor obtains an appropriate actuation driving voltage through changing the duty ratio of the frequency conversion driving electric power source at the state that the voltage of the power-line is unstable. Thereby the direct current frequency conversion compressor can be normally actuated no matter the value of the supplied voltage of the electric power source.
Owner:HAIER GRP CORP +1

Control device for starting LCD power supply

The invention particularly discloses a control device for starting an LED power supply. A power interface of an LED controller is connected with a logic power supply of an LED, and the output end of the power interface is connected with the first input end which makes a signal to generate a module and the control signal input end of the LED; the output end which makes a signal to generate a module is connected with an enabling pin of a backlight power supply chip; the output end of the backlight power supply chip is connected with a backlight power supply of the LED; after the LED controller is started, a control signal is output to an enabling signal generating module and the LED; and the enabling signal generating module receives the control signal of the LED controller, and outputs the enabling signal to the backlight power supply chip, so that the backlight power supply chip can light the backlight source of the LED. The control device is adopted to effectively guarantee the starting of the backlight power supply of the LED on the logical power supply after electricity switching, and ensure correct order starting of the logic power supply of the LED and the backlight power supply.
Owner:SANY HEAVY IND CO LTD (CN)

Fuel filter with automatic water discharging function and automatic water discharging method

The invention belongs to the technical field of fuel systems of vehicles, and particularly relates to a fuel filter with an automatic water discharging function and an automatic water discharging method using the fuel filter. The fuel filter with the automatic water discharging function comprises a fuel filter body and a cup. The cup comprises an oil-water separation cavity and a water storage cavity which are partitioned from each other by a partition plate. An electromagnetic valve is arranged at the bottom of the partition plate. A first water port and a second water port are separately formed in the two sides of the electromagnetic valve. A liquid level sensor is arranged in the oil-water separation cavity. A drain pipe is arranged in the water storage cavity. The vertical position ofa water inlet of the drain pipe is located above the second water port of the electromagnetic valve. By adoption of the fuel filter with the automatic water discharging function and the automatic water discharging method, water accumulated in the cup can be automatically discharged, and damage to an engine caused when an operator forgets to discharge water manually is reduced; and air is effectively prevented from entering the fuel filter in the exhausting process, and thus, normal starting and operation of the engine are ensured.
Owner:WEICHAI POWER CO LTD

Self-checking device of motor open loss and application method thereof

The invention relates to the field of emergency protective circuit devices which react to overcurrents, in particular to a self-checking device of a motor open loss and an application method thereof. The self-checking device of the motor open loss includes current sensors (1) and is characterized by further including a motor controller (2) and an angle sensor (3), and the current sensors (1) and the angle sensor (3) are both connected with a microprocessor (21) through signal lines. The application method of the self-checking device of the motor open loss is characterized in that when a motor (4) stops working, the steps of a) inputting parameters, b) processing the parameters, c) modulating voltages and d) judging an open loss are performed sequentially. The self-checking device of the motor open loss is simple in structure, convenient to install, quick in response, safe, reliable, and wide in range of application.
Owner:SHANGHAI DAJUN TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products