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44results about How to "With power-off protection function" patented technology
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High-reliability linear file access method based on nand flash
ActiveCN103577121AImprove reliabilityImprove efficiencyInput/output to record carriersMemory loss protectionAccess methodData access
The invention discloses a high-reliability linear file access method based on a nand flash. The nand flash comprises an sdram memory, an nvram nonvolatile memory and a nand flash memory array. The access method comprises the following steps: initializing a partition table; initializing file information which comprises beginning and end addresses of a file, an open mode, a filename and file size information; creating a new file according to initialized file information; adopting an address order mode to transfer data from a buffer area in the sdram memory of the nand flash to a memory area pointed by a file pointer in the partition area, and completing file write; and reading the data from the partition area to the sdram memory of the nand flash, then taking the data from the sdram memory, and finishing file read. The high-reliability linear file access method based on the nand flash realizes file access management of equipment based on the nand flash, and has the characteristics of high efficiency and capability of realizing data access in a file mode.
Owner:CSIC WUHAN LINCOM ELECTRONICS
Lunar exploration mechanical arm modular joint with torque retention feature
The invention relates to a lunar exploration mechanical arm modular joint with the torque retention feature. The lunar exploration mechanical arm modular joint can solve the problems of high launchingcost of the modular joint of the mechanical arm of a lunar exploration vehicle and short service life of the mechanical arm of the lunar exploration vehicle. A driving device is connected with a flange disc at an input end of a harmonic reducer through a rotor shaft of a motor, a rigid gear is fixedly connected with an inner seat of an angular contact bearing, the inner seat of the angular contact bearing is fixedly connected with a casing of an input device, a flexible gear is fixedly connected with the flange disc at an output end of the harmonic reducer and an output flange disc, back-to-back angular contact bearings are arranged between the inner seat of the angular contact bearing and an outer seat of the angular contact bearing, a contact type packing sealing structure and a mechanical limiting structure are arranged between the flange disc of a sealing device and the outer seat of the angular contact bearing, and an electrical device is fixed between the inner seat of the angular contact bearing and the output flange disc. The lunar exploration mechanical arm modular joint has the advantages of power-off protection function, compact structure, light weight, low power consumption, good sealing performance, low launching cost and long service life.
Owner:HARBIN INST OF TECH
A wireless network video monitoring system of high mobility and the corresponding control method
InactiveCN101217647AResumable upload supportWith power-off protection functionData switching by path configurationClosed circuit television systemsVideo monitoringVideo server
The invention relates to a wireless network video monitoring system with high mobility, which comprises a video monitoring terminal, a wireless network transfer module and a video surveillance system. The video monitoring terminal collects video signals through a camera, then the video signals are sent to a main processing module after being transformed by A / D; voice frequency signals are sent to the main processing module after being processed by a voice frequency processing module, and the video signals and the voice frequency signals processed by the main processing module are stored in a real-time memory card and are sent to the wireless network transfer module, the software of which is controlled by SD. The SD controls the wireless network to automatically be linked to a video server to update the video monitoring video when mobile carriers reach a base station. The invention has the advantages of high reliability, guaranteeing uninterrupted video monitoring, high transmitting speed, low cost of equipment, high price performance, flexibility and practicality; the invention absolutely solves video monitoring blind spots and pitfalls of mobile objects and fills up the video monitoring blank of the mobile objects.
Owner:赵凤济
Data acquisition system of machine tool
The invention relates to a machine tool data acquisition system which mainly comprises a main control circuit, a program memory and a data memory that are respectively electrically connected with the main control circuit. The machine tool data acquisition system is characterized by further comprising a sensor which is arranged on at least one machine tool and is used for sensing the action of the machine tool, and the sensor is electrically connected with the main control circuit to transmit an action signal corresponding to completion of every machining to the main control circuit. The machine tool data acquisition system can realize the automatic counting of the production data such as production amount, production time and the like, of the machine tool and the like, so as to reasonably analyze and arrange production, and can carry out power-off protection and has fast response speed, small volume and low cost.
Owner:SHENZHEN DONGYANGWANGHE IND CO LTD
Automatic compensation system for electrode tip of welding manipulator
InactiveCN103212775AAvoid lossGuaranteed uptimeElectrode featuresElectrical resistance and conductancePower flow
The invention provides anautomatic compensation system for an electrode tip of a welding manipulator in the field of resistance spot welding for welding a vehicle body. The automatic compensation system comprises the welding manipulator and a welding platform, wherein a compensation plane and a detection switch are also arranged on the welding platform; the detection switch is connected with an automatic lifting control system of the welding manipulator; the heights of the welding manipulator and the top electrode tip arranged on the welding manipulator are automatically controlled through a signal of the detection switch; and the automatic lifting control system of the welding manipulator comprises a current detection and analysis module, an alarm device and an automatic compensation system. The system is safe and reliable in operation, can guarantee that the welding quality of a welding spot of a product meets the technical requirements, can give an alarm for wear of the electrode tip, can realize automatic wear compensation and enters a normal welding program after automatic compensation is finished.
Owner:WUHAN UNIV OF TECH
Method for implementing file system in embedded system
ActiveCN102103596AReduce dependenceImprove operational efficiencySpecial data processing applicationsOperational systemFile system
The invention discloses a method for implementing a file system in an embedded system, which comprises the following steps of: establishing the file system consisting of a file information area and a file data area, wherein the file information area consists of a plurality of file information structures for describing each piece of file information respectively, and the file data area is used for storing files; initializing the file system; and establishing and maintaining the file information area by using a journal method, and when writing operation is performed on the files each time, after the files are written into the file data area, updating the records of the file information to the file information area. In the method, the file system is implemented, can modify the number of the files to be stored and total capacity according to configurations, has a power failure protection function, high file reading / writing operation efficiency and small code sizes, is less dependent on an operating system and convenient to port, and occupies fewer resources.
Owner:深圳华康创展科技控股集团有限公司
TV system software updating method with power-off protection
ActiveCN1955925ASmall space requirementLow costTelevision system detailsColor television detailsTelevision systemApplication software
A method for updating software of TV system with power-off protection includes dividing storage of TV to be four regions of data region, application program region stored with application program for realizing application function of TV, update program region stored with update program for realizing download of update application program and update program, and guide program region; restoring update program region by said application program when update program is damaged and storing update code in update program region to finalize restoration of update program region with said code when restoration is started.
Owner:SHENZHEN TCL NEW-TECH CO LTD
Suspended zero-gravity simulated test bed and using method thereof
ActiveCN105539889AWith power-off protection functionLow movement resistanceCosmonautic condition simulationsEngineeringGravitational force
The invention provides a suspended zero-gravity simulated test bed comprising an active tracking subsystem, a plurality of passive tracking subsystems and a plurality of suspension systems, wherein the active tracking subsystem comprises a first guide rail and a plurality of active moving platforms moving along the first guide rail; the plurality of passive tracking subsystems are respectively fixedly arranged on the plurality of active moving platforms; each passive tracking subsystem comprises a second guide rail and a passive moving platform; and the plurality of suspension systems are respectively fixedly arranged on the plurality of passive moving platforms. The suspended zero-gravity simulated test bed has the beneficial effect that the zero-gravity simulated test bed provided by the invention adopts an active and passive mixed tracking mode, has a power-off protection function and can be used for a zero-gravity simulated test of a complex movement mechanism needing multi-point suspension. The invention also provides a using method of the suspended zero-gravity simulated test bed.
Owner:SHANGHAI JIAO TONG UNIV
Automatic-detection and falling-protection safety device
InactiveCN103569918AReduce shockReasonable structureSafety devices for lifting equipmentsElectrical controlFall protection
An automatic-detection and falling-protection safety device comprises a pressure plate, wherein the pressure plate is hinged to a support; an electromagnet is arranged at one end of the pressure plate and is connected with an electrical control system; a hole is formed in the other end of the pressure plate; an upright column guide track is arranged in the hole and can vertically slide in the hole; a magnetic railing ruler is arranged on the upright column guide track and is provided with a measuring head; the lower portion of the pressure plate is positioned on the outer side of the upright column guide track and is provided with a slide way through a stand; a wedge-shaped sliding block is arranged between the slide way and the upright column guide track; and a spring is arranged between the lower end of the wedge-shaped sliding block and the stand. The automatic-detection and falling-protection safety device is reasonable in structure set, impact on a machine body can be effectively reduced, and permanent deformation on the structure can be avoided; and moreover, the automatic-detection and falling-protection safety device is high in practicability, is applicable to a steel wire rope type lifting platform, a chain type lifting platform, a lead screw type lifting platform and the like, has a power-off protection function, and can be safely locked after power is failed.
Owner:HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
Water source automatic switchover device
InactiveCN101096855ASimple structureReduce manufacturing costOperating means/releasing devices for valvesService pipe systemsEngineeringStreamflow
The invention discloses a water source automatic switching device, which is characterized by the following: arranging main water source interface, auxiliary water source interface and water outlet interface on lateral face of container; communicating the interfaces to tee pipe separately; concatenating the main water source interface and the tee pipe to clack valve component and air-vent valve; concatenating the auxiliary water source interface and tee pipe to one-way valve; concatenating the water outlet interface and the tee pipe to flow sensor; connecting auxiliary water source detector to water level entry side of controller on inner wiring board. This invention possesses simple structure and lower cost.
Owner:陈仁德
Skid-mounted gel dispersion production device and gel dispersion, preparation method and application thereof
ActiveCN109666468ARealize continuous production and useSimple structureDrilling compositionSealing/packingCross-linkEngineering
The invention relates to the field of oilfield profile control and flooding, in particular to a skid-mounted gel dispersion production device and gel dispersion, a preparation method and applicationsthereof. According to the trend of logistics, the skid-mounted gel dispersion production device sequentially comprises a jet mixing system, a bulk gel chemical crosslinking reaction system, a shear grinding system and a storage system, and the skid-mounted gel dispersion production device further comprises an intelligent control system used for regulating the jet mixing system, the bulk gel chemical crosslinking reaction system, the shear grinding system and the storage system, wherein the bulk gel chemical crossslinking reaction system comprises a reaction tank, and a heating device is arranged in the reaction tank. The skid-mounted gel dispersion production device and gel dispersion, and the preparation method thereof have the advantages of realizing rapid cross-linking reaction of bulkgel in medium and high temperature reservoirs, achieving large-scale preparation of multi-scale gel dispersion, and being suitable for continuous production in complex environment such as beaches, hills and offshore operation platforms.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Safety belt controlled by magneto-rheological load limiter
ActiveCN105292047AAvoid strangulationThe layout of the control magnetic circuit is simple and easyBelt retractorsPistonElectronic control unit
A safety belt controlled by a magneto-rheological load limiter comprises a lock buckle, a lock tongue, a woven belt, a locking device, a connecting plate, a sliding block, the magneto-rheological load limiter, an electric controller, an electronic control unit, a woven belt force sensor, an electronic control switch and a fixed sleeve. The magneto-rheological load limiter mainly comprises a cylinder body, an electromagnet piston, a piston rod, a sealing partition plate and magneto-rheological fluid. The magneto-rheological load limiter adopts the magneto-rheological control mode, can intelligently control the tensioning degree of the woven belt in the locking device according to the vehicle speed, the acceleration speed of the woven belt, the inclination angle of a vehicle body and the constraining force on the human body, can constrain the human body to a seat as soon as possible in emergency circumstances, can intelligently control the woven belt for providing appropriate constraint force for controlling the deceleration of the human body according to the physiological limit of the human body and can protect the human body against constraint injury caused by the woven belt.
Owner:SHANGHAI UNIV OF ENG SCI
Soft-touch type multipoint control switch
InactiveCN1877994ARealization of multi-point controlEasy to installElectronic switchingArrangements responsive to undervoltageCapacitanceCurrent limiting
The invention discloses a multi-point control switch, which comprises the following parts: binding post J1 and J2, main switch Kz and multi-auxiliary switch Kf, load resistance R1, R2 and R7, bias resistance R3, R4 and R6, charge-discharge current-limiting resistance R5, voltage-limiting current-limiting resistance R8, charging capacitance C2, filter capacitance C1, by-pass capacitance C3, C4 and C5, triode T1, T2 and T3, single-direction controllable silicon T4, commutating bridge Q, diode D1 and D2. The main switch parallels the auxiliary switch with random switch controlling the path and discontinuity of main circuit.
Owner:HANGZHOU DIANZI UNIV
Socket with power-off protection function
InactiveCN108448343AAvoid electrical hazardsEnsure electricity safetyCoupling device detailsWireless transmissionComputer module
The invention discloses a socket with a power-off protection function; the socket comprises an image acquisition module, a wireless transmission module, a control module and a protection module arranged on the socket body; the image acquisition module is connected with the control module via the wireless transmission module; the control module is wirelessly connected with the protection module; the image acquisition module is used for obtaining image information of a specific object moving in front of the socket, and sending the image information to the control module via the wireless transmission module; the control module compares the image information with pre-stored object information, calculates the similarity between the image information and the object information, and sends the similarity to the protection module; the protection module carries out power off protection for the socket according to the similarity. The image information of the specific object in front of the socketcan be obtained; the similarity between the image information and the pre-stored object information can be calculated; the power off protection for the socket can be carried out according to the similarity, thus ensuring power usage safety.
Owner:薛依凡
Impedance self-adaptive laser diode driver
InactiveCN109713564ASafe and reliable workStable jobLaser detailsSemiconductor lasersSelf adaptiveElectron
The invention discloses an impedance self-adaptive laser diode driver, and belongs to the technical field of electronic equipment. The impedance self-adaptive laser diode driver mainly comprises a current setting module (1), an amplitude limiting setting module (2), a power output module (3), a load judgment module (4), a delay compensation module (5), a voltage tracking module (6), a power-off protection module (8), a front panel (14) and the like. When the driver works, the driver can actively adapt to the load change, and has the advantages of high efficiency, wide load application range, high safety, high reliability and the like.
Owner:JILIN UNIV
Impedance adaptive laser diode driving circuit
InactiveCN109546528ASafe and reliable workStable jobLaser detailsSemiconductor lasersElectronDriving circuit
The invention relates to an impedance adaptive laser diode driving circuit and belongs to the technical field of electronic equipment. The impedance adaptive laser diode driving circuit comprises a current setting module (1), a amplitude-limiting setting module (2), a power output module (3), a load determining module (4), a delay compensation module (5), a voltage following module (6) and a power-off protection module (8). The impedance adaptive laser diode driving circuit can actively adapt to the change of a load in operation, and has high efficiency, a wide load adaptation range, high safety and high reliability.
Owner:JILIN UNIV
Portable impedance self-adaption laser diode driving module
InactiveCN109346918ASafe and reliable workStable jobLaser detailsSemiconductor lasersElectronVoltage
The invention discloses a portable impedance self-adaption laser diode driving module, and belongs to the technical field of electronic equipment. The main structure of the portable impedance self-adaption laser diode driving module comprises a front panel (1), an amplitude limiting setting module (2), a power output module (3), a load judgment module (4), a time delay compensation module (5), a voltage tracking module (6), an outage protection module (8) and the like. During working, the module can actively adapt to load changes and has the advantages of being high in efficiency, wide in loadadaptation range, high in safety, high in reliability and the like.
Owner:JILIN UNIV
LED lamp drive power supply
InactiveCN107333357AImprove stabilitySimple structure and principleElectrical apparatusElectroluminescent light sourcesEngineeringLED lamp
The invention provides an LED lamp drive power supply which comprises a controller, an LED lamp drive module, an LED lamp power-off protection module and an RTC clock module. The controller is connected with the LED lamp drive module, the LED lamp power-off protection module and the RTC clock module. The LED lamp drive module is electrically connected with an LED lamp. The LED lamp drive power supply provided by the invention has the advantage of simple structure principle, automatically adjusts on / off of the LED lamp, saves power, has a power-off protection function, and prevents the LED lamp from burnout.
Owner:BEIJING JUNXIU CONSULTATION CO LTD
Practical training platform for teaching precise positioning and navigation system
PendingCN113689753AConvenient simulation control operationEasy to storeCosmonautic condition simulationsSimulatorsSolid woodNavigation system
The invention relates to the technical field of practical training platforms for teaching precise positioning and navigation systems, in particular to a practical training platform for teaching a precise positioning and navigation system. The practical training platform comprises a demonstration board, wherein one side of the demonstration board is provided with a light-emitting title board, an industrial control all-in-one machine, a conventional satellite introduction board, a differential positioning and navigation introduction board and a satellite positioning introduction board; the bottom side of the demonstration board is provided with a solid wood bedplate; the bottom side of the solid wood bedplate is provided with a rack; one side of the solid wood bedplate is provided with a liftable platform; the bottom side of the liftable platform is provided with a movable supporting assembly; the top side of the solid wood bedplate is provided with a model car and a seven-frequency antenna anatomical model; and the top side of the liftable platform is provided with a satellite networking model. The practical training platform for teaching the precise positioning and navigation system achieves four-in-one centralized display and three-in-one display teaching, has a power-off protection function and is easy to operate by students, and the rack is resistant to corrosion and easy to clean.
Owner:SHANXI NINGZHI TECH
Multifunctional air switch
InactiveCN102148114AWith power-off protection functionSimple structureProtective switchesArrangements responsive to excess currentElectrical currentBuzzer
The invention provides a multifunctional air switch. The invention is characterized in that the multifunctional air switch is provided with an automatic power failure reset circuit and an overcurrent protection circuit, wherein the automatic power failure reset circuit keeps the power failure state when a circuit is energized again after being interrupted and enters the electrifying state after being manually started or started at regular time; when a tandem load current is larger than a preset value, the overcurrent protection circuit cuts off the supply of the load current; and a power supply is connected with the automatic power failure reset circuit in series, is connected with the overcurrent protection circuit and then is connected with a load. The multifunctional air switch has thepower failure protection function by arranging the automatic power failure reset circuit, protects the load during overlarge operating current by arranging the overcurrent protection circuit and effectively integrates the functions of power failure protection reset and overcurrent protection. In addition, the multifunctional air switch can be provided with an indicator lamp and a buzzer so as to display working conditions of power failure reset and overcurrent protection; and the circuits have simple structures and are convenient to use.
Owner:SHANDONG SIDIPU ELECTRIC CO LTD
A suspended gravity-free simulated test bed and its application method
ActiveCN105539889BWith power-off protection functionLow movement resistanceCosmonautic condition simulationsEngineeringZero gravity
The invention provides a suspended zero-gravity simulated test bed comprising an active tracking subsystem, a plurality of passive tracking subsystems and a plurality of suspension systems, wherein the active tracking subsystem comprises a first guide rail and a plurality of active moving platforms moving along the first guide rail; the plurality of passive tracking subsystems are respectively fixedly arranged on the plurality of active moving platforms; each passive tracking subsystem comprises a second guide rail and a passive moving platform; and the plurality of suspension systems are respectively fixedly arranged on the plurality of passive moving platforms. The suspended zero-gravity simulated test bed has the beneficial effect that the zero-gravity simulated test bed provided by the invention adopts an active and passive mixed tracking mode, has a power-off protection function and can be used for a zero-gravity simulated test of a complex movement mechanism needing multi-point suspension. The invention also provides a using method of the suspended zero-gravity simulated test bed.
Owner:SHANGHAI JIAO TONG UNIV
TV system software updating method with power-off protection
InactiveCN100430894CSmall space requirementLow costTelevision system detailsColor television detailsTelevision systemApplication software
Owner:SHENZHEN TCL NEW-TECH CO LTD
An Impedance Adaptive Laser Diode Driver
InactiveCN109713564BSafe and reliable workStable jobLaser detailsSemiconductor lasersComputational physicsElectric current flow
The invention discloses an impedance self-adaptive laser diode driver, and belongs to the technical field of electronic equipment. The impedance self-adaptive laser diode driver mainly comprises a current setting module (1), an amplitude limiting setting module (2), a power output module (3), a load judgment module (4), a delay compensation module (5), a voltage tracking module (6), a power-off protection module (8), a front panel (14) and the like. When the driver works, the driver can actively adapt to the load change, and has the advantages of high efficiency, wide load application range, high safety, high reliability and the like.
Owner:JILIN UNIV
Seat belts controlled by magnetorheological force limiters
A safety belt controlled by a magneto-rheological load limiter comprises a lock buckle, a lock tongue, a woven belt, a locking device, a connecting plate, a sliding block, the magneto-rheological load limiter, an electric controller, an electronic control unit, a woven belt force sensor, an electronic control switch and a fixed sleeve. The magneto-rheological load limiter mainly comprises a cylinder body, an electromagnet piston, a piston rod, a sealing partition plate and magneto-rheological fluid. The magneto-rheological load limiter adopts the magneto-rheological control mode, can intelligently control the tensioning degree of the woven belt in the locking device according to the vehicle speed, the acceleration speed of the woven belt, the inclination angle of a vehicle body and the constraining force on the human body, can constrain the human body to a seat as soon as possible in emergency circumstances, can intelligently control the woven belt for providing appropriate constraint force for controlling the deceleration of the human body according to the physiological limit of the human body and can protect the human body against constraint injury caused by the woven belt.
Owner:SHANGHAI UNIV OF ENG SCI
Soft-touch type multipoint control switch
InactiveCN1877994BRealization of multi-point controlEasy to installElectronic switchingArrangements responsive to undervoltageCapacitanceLoad resistance
The invention discloses a multi-point control switch, which comprises the following parts: binding post J1 and J2, main switch Kz and multi-auxiliary switch Kf, load resistance R1, R2 and R7, bias resistance R3, R4 and R6, charge-discharge current-limiting resistance R5, voltage-limiting current-limiting resistance R8, charging capacitance C2, filter capacitance C1, by-pass capacitance C3, C4 andC5, triode T1, T2 and T3, single-direction controllable silicon T4, commutating bridge Q, diode D1 and D2. The main switch parallels the auxiliary switch with random switch controlling the path and discontinuity of main circuit.
Owner:HANGZHOU DIANZI UNIV
Method of Realizing File System in Embedded System
ActiveCN102103596BReduce dependenceImprove operational efficiencySpecial data processing applicationsOperational systemFile system
Owner:深圳华康创展科技控股集团有限公司
A highly reliable linear file system based on nand flash
ActiveCN103577574BImprove reliabilityImprove efficiencySpecial data processing applicationsAbstraction layerFlash file system
The invention discloses a high-reliability linear file system based on a nand flash. The nand flash comprises an sdram memory, an nvram nonvolatile memory and a nand flash memory array. The file system comprises a hardware abstraction layer and a software layer, wherein the hardware abstraction layer is used for accessing hardware IO (input / output); the software layer is used for operating a file by accessing an interface of the hardware abstraction layer, and the software layer comprises a partition table initialization module, a file management module and a file access module. The high-reliability linear file system based on the nand flash realizes file management of equipment based on the nand flash, and has the characteristics of high portability, high efficiency, capability of realizing data access in a file mode, automatic loop record, power-off protection of files and the like.
Owner:CSIC WUHAN LINCOM ELECTRONICS
Intelligent leakage protection plug with leakage protection function failure re-protection function
PendingCN110739589AAutomatic monitoring of working statusWith power-off protection functionCoupling device detailsTwo-part coupling devicesMicrocontrollerElectrical connection
The invention relates to an intelligent leakage protection plug with a leakage protection function failure re-protection function. The plug comprises a direct current power supply circuit, a test circuit, a leakage fault induction coil, and a leakage fault monitoring circuit. The direct current power supply circuit provides the leakage fault monitoring circuit and the following circuits with a direct current working power supply. The output end of the leakage induction coil is electrically connected with the input end of the leakage fault monitoring circuit. The plug further comprises a relayswitch circuit, a microcontroller control circuit and a leakage protection function monitoring circuit. The microcontroller control circuit includes a control chip and a storage chip. The control chipis provided with a reset switch. The relay switch circuit includes a relay with three sets of normally open contacts and a drive switch circuit. The three sets of normally open contacts of the relayare connected in series with the three-pole power supply of L fire, N zero and PE ground respectively. The plug can monitor the fault of the leakage protection circuit. When the leakage protection function fails, the plug can automatically cut off the power supply and give an alarm. The plug has the functions of power-down memory and power-off protection, can meet the national standard requirementfor work at low-voltage AC50V, and is safe and reliable.
Owner:FOSHAN SHUNDE CITY XINHUIDA ELECTRONICS
Digital impedance adaptive laser diode driver
InactiveCN109659811ASafe and reliable workStable jobLaser detailsSemiconductor lasersVoltageEngineering
Owner:JILIN UNIV
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