44results about How to "With power-off protection function" patented technology

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.

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.

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.

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.

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.

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.

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.

The invention relates to a method for controlling a microwave oven with power-off protection function. The method comprises the following steps: (1) after the microwave oven begins to operate, a control device controls the microwave oven to operate a normal working program; (2) whether the power-off time is more than X is judged, and X is an arbitrarily set; (3) if the power-off time is more thanX, the operating program of the microwave oven controlled by the control device is automatically cleared, and a standby state is returned; and (4) if the power-off time is less than X, a user choosesto continue the program or not; if the user chooses to continue the program, a continuing key is started up and the operation is continued; and if the user chooses not to continue the program, the standby state is returned. The method can directly record the final working state of the microwave oven; if power is resupplied within several minutes, the state of the final program is directly displayed in the microwave oven without resetting; and if the microwave oven can not resupply power for an overlong time, the program is automatically cleared according to original mode, thereby bringing convenience for the user to use.