52results about How to "No deadlock" patented technology

The invention provides a method and a device for mode conversion in robust header compression, which is used for the mode conversion of a compressor and a decompressor of profile2 and profile3. The method comprises the following steps: after the compressor receives a feedback packet carrying a target mode, a command of canceling mode conversion is sent to the decompressor if a UOR-2 type packet carrying the target mode can not be sent to the decompressor within a preset time; and after the decompressor receives the command of canceling mode conversion, the mode conversion is terminated. The method can effectively correct the defects in the RFC3095 protocol, and ensures that dead lock can not happen to the mode conversion in the aspect of flow.

The invention discloses a BOOST circuit with an adjusting starting voltage, comprising a BOOST circuit module, an TL5001 chip, a starting voltage adjusting module and a metal-oxide-semiconductor field effect transistor (MOSFET) drive circuit module, wherein the starting voltage adjusting module comprises a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a fourth voltage-stabilizing diode D4 and a fifth triode Q5. According to the BOOST circuit, by designing the starting voltage adjusting module, the starting power supply voltage of the whole BOOST circuit is improved to the required voltage value, so that the circuit starts working when the input power supply voltage reaches over a set voltage section and stops working after the input power supply voltage is lower than the set voltage, further the starting input current is reduced and the phenomenon that the circuit is locked can be avoided. Meanwhile, by designing the MOSFET drive circuit module, the circuit is simple in design and feasible, has high drive efficiency and low cost and solves the problems that a drive circuit of the TL5001 has a complex structure and high cost in the BOOST circuit.

The invention discloses diagnosis methods for phase line faults of an electric power steering system. A diagnosis method for the phase line faults of a power motor in a power-on initiation state comprises the following steps: high frequency voltage supply, current collection, fault diagnosis, fault confirmation and fault treatment. A diagnosis method for judging the faults in a normal power stage comprises the following steps: collection of current signals and speed signals of the power motor, fault diagnosis, fault confirmation and fault treatment. The diagnosis methods for the phase line faults of the electric power steering system can fast detect the phase line faults of the electric power steering system and avoid conditions of locking and power chaos of the steering system.

The invention discloses a self-adaptive optimistic concurrency control method, which is substantially applied to a multiple user concurrent environment based on a main memory. The method comprises two concurrency control methods that an optimistic concurrency control is converted into a pessimistic concurrency control and the pessimistic concurrency control is converted into the optimistic concurrency control; when the system is under the environment of high collision rate, a concurrency control policy is converted into the pessimistic concurrency control from the optimistic concurrency control; and when the system is under the environment of low collision rate, the concurrency control policy is converted into the optimistic concurrency control from the pessimistic concurrency control. According to the elf-adaptive optimistic concurrency control method, compared with the pure optimistic concurrency control method or the pessimistic concurrency control method, the defect that the concurrency capability is reduced under the environment of high collision rate or the unlocking of a lock is avoided, and the concurrency capability of the system can be greatly improved.

The invention discloses a parallel SOAP communication system and a method thereof, relating to the technical filed of network calculation; the technical problem of the parallel calculation of multi-cluster grid is needed to be solved; the system constructs multi-cluster grid via a plurality of ordinary computer clusters and configures the parallel communication structure facing the SOAP in every computer node of the multi-cluster grid, and the parallel communication structures of all the computer nodes form the SOAP parallel communication system. The adoption of concurrent data stream, dynamic buffer pool technology, compression coding technology and parallel flow mechanism, and the use of an internal memory unit realize the parallel operation of the communication resource and the calculation resource. A buffer block is used for constructing parallel data stream, which can realize the many-to-many communication needed by parallel calculation, super-matrix elements and density factors are used for organizing the parallel data stream and realizing the flow regulation of the parallel data stream, thus realizing the parallel SOAP communication system. The invention is characterized by favorable expansibility, high efficiency, and supportability of parallel calculation of multi-cluster grid.

The invention discloses a switching network based broadcast scheduling method which achieves broadcast link-speed forwarding and guarantees broadcast messages to reach all destination ports simultaneously. When a broadcast is transmitted by multiple ports, deadlock is avoided, and transmission loads of transmission ports are kept balanced; and the method is supportive to a cascade network of two switches. All the ports needing to transmit the broadcast messages are arbitrated by a designed global broadcast arbitrator; then the ports with permission transmit requests to all the destination ports and transmit data frames and repeal the broadcast transmission requests after obtaining permission of all the destination ports; and the broadcast arbitrator moves onto next round of arbitration.

The invention discloses a locking and locating mechanism for a fiber-optic gyroscope north seeker. The locking and locating mechanism for the fiber-optic gyroscope north seeker is mainly formed by a locating plate and a locking component. The functions of locking, unlocking, locating and the like of rotating components of the fiber-optic gyroscope north seeker are realized through the control of a direct-current motor and the detection of a photoelectric sensor signal by matching with the locating plate, and thus the north seeking function of the fiber-optic gyroscope north seeker is realized. According to locking and locating mechanism for the fiber-optic gyroscope north seeker, disclosed by the invention, the size is small, the reliability is high, the accurate location requirement needed by the fiber-optic gyroscope north seeker is met, and the stability and the reliability of the rotating components of the fiber-optic gyroscope north seeker are increased.

The invention relates to a threaded spindle (11), having a drive part (20), which has a longitudinal axis (A) and is mounted by a first journal (70), and having a threaded part (30), which likewise has a longitudinal axis (B), and having a threaded nut (50), which is mounted by a second journal (80a; 80b) and in which the threaded part (30) is guided. The drive part (20) and the threaded part (30) are formed as separate parts and are each provided with at least one coupling element (25, 55), which are connected to each other in an articulated manner by plugging together. A mutual offset or inclination angle (a) of the longitudinal axes (A, B) of the drive part (20) and of the threaded part (30) can be compensated in this manner. The two-part threaded spindle (11) forms a threaded drive with the threaded nut (50) thereof, which can for example be used in a parking brake of a vehicle braking system. The swinging function created between the drive part (20) and the threaded part (30) reduces transverse forces, which increases efficiency and reduces wear compared to a known threaded drive with a single-part threaded spindle.

The invention relates to a quick task allocation method avoiding deadlock on a heterogeneous resource system. The quick task allocation method comprises the following steps of: (1) representing a specific application by using a task data flow diagram, and geometrically calculating by using an adjacent matrix of the task data flow diagram to acquire a new matrix, wherein the new matrix is used for representing whether the length of the longest path between nodes is greater than or equal to 2; (2) selecting node pairs with the longest path length between nodes smaller than 2 and greatest communication data volume according to the new matrix, merging the node pairs into a node cluster, updating the new matrix, repeating the node merging process, and reducing the scale of the task data flow diagram to an intended target; and (3) allocating the task data flow diagram to a heterogeneous resource set by using an integral linear programming equation set. The quick task allocation method has the advantages of being provided with task execution sequence dependency relationship and communication dependency relationship among tasks and has the characteristic of avoiding deadlock, and the total expense of the heterogeneous resource system is minimized.

The invention provides a method and a device for starting a process task in semiconductor process equipment. The method comprises the steps of generating a process region relationship list of a current process task of the semiconductor process equipment; determining all to-be-started process tasks, and generating a process region relationship list of each to-be-started process task; based on the process area relationship list of the current process task and the process area relationship list of each to-be-started process task, determining whether all the to-be-started process tasks include startable process tasks or not according to a first preset rule; and when all the to-be-started process tasks include the startable process tasks, selecting a target startable process task from all the startable process tasks according to a second preset rule, and starting the target startable process task. Therefore, the situation that the target startable process task and the current process task aim at materials in two same process areas but are opposite in sequence does not occur at any moment, deadlock is avoided, and the production efficiency is improved.

The invention relates to a method for operating a transmission device (1), in particular a double-clutch transmission device, the transmission device (1) comprising a plurality of gear selectors (2, 3, 4, 5) each having a gear selector valve (15, 16, 17, 18), and a gear selector piston (23, 24, 25, 26) which is operatively connected to a selector fork of the transmission device (1), is arranged in a gear selector cylinder (19, 20, 21, 22) and divides the latter into a first pressure chamber (27, 28, 29, 30) and a second pressure chamber (31, 32, 30 36). In a first shifting position of the gear selector valve (15, 16, 17, 18), the first pressure chamber (27, 28, 29, 30) has a flow connection to a common feed line (12), in a second shifting position, the second pressure chamber (31, 32, 33, 34) has a flow connection to a common feed line (12), and in a neutral position, none of the pressure chambers (27, 31; 28, 32; 29, 33; 30, 34) has a flow connection to a common feed line; and a flow connection of the feed line (12) to a common pressure source (6) is enabled in a first operating position of the shifting valve (13) and is interrupted in a second operating position of the shifting valve (13). Here, according to the invention, to achieve a change from a standby operating mode into a power saving operating mode, a pressure test is carried out, in which the gear selector valves (15, 16, 17, 18) of the gear selectors (2, 3, 4, 5) for setting the neutral position and the shifting valve (13) for setting the second operating position are activated, and then the gear selector valve (15, 16, 17, 18) of at least one of the gear selectors (2, 3, 4, 5) for setting one of the shifting positions is activated.

The invention discloses a door closer capable of automatically opening or closing a door. The door closer comprises a pedestal, a door closer cylinder body arranged on the pedestal, a rocker arm rotatably connected with the door close cylinder body through a pivot, a driving component capable of driving the pivot to rotate and a control component of controlling the driving component to operate. The door closer of automatically opening or closing the door has the advantages that (1) a sensing part is utilized to detect whether a person is close to the door or not, a processor is utilized to control to open or close the door, the use is convenient, and it is avoided that a handle of the door can cause disease spread when people pull the door handle; (2) the sensing part and a time relay areadopted to control the time of opening the door, thereby avoiding pinching hand when the door is closed earlier; (3) when the electricity of the door closer of automatically opening or closing a dooris cut off, a dead lock can not happen on the door closer, and the door can be opened or closed by hand.

The invention discloses a transcatheter intramyocardial injection system. The system comprises a catheter body, wherein an ablation part is fixed at the far end of the catheter body; a handle part is fixed at the near end of the catheter body. The ablation part comprises an elastic head end pipe; an ablation electrode is arranged at the far end of the elastic head end pipe; the ablation electrode comprises at least one cavity; a needle outlet hole is formed in the ablation electrode. A puncture needle extends to the cavity of the ablation electrode through the elastic head end pipe; the puncture needle extends to the exterior of a catheter through the needle outlet hole; the far end of the puncture needle comprises a bending section; the inner diameter of a tube body is 0.25 to 0.35mm. When in use, drug can smoothly pass the puncture needle tube body, and the puncture needle tube body can be guaranteed not to be bent during use.

The invention belongs to the field of electric wire devices, and particularly relates to an electric wire device for the construction site. The electric wire device for the construction site comprisesa base, supports, a winding roller, a belt pulley A, a synchronous belt, a belt pulley B, a damping ring, an electric drive module and the like. The two supports are symmetrically arranged on the base with a moving device; and when a worker is carelessly stumbled by a use-state transition cable released from the winding roller, a suspended transition cable can pull the winding roller to rotate for two to three circles under the action of an external force, a volute spiral spring is compressed so as to store energy, and the transition cable is continuously released for a certain length by therotating winding roller so as to form buffer on the external force stressed by the transition cable, so that the transition cable is prevented from being pulled and damaged under the action of the stumbling external force, the service life of the transition cable is prolonged, the worker stumbled by the transition cable is prevented from being unbuffered stumbled by the cable so as to fall off, and the activity safety of working personnel is further ensured.

The invention discloses a method for realizing data sharing among tasks. The problems that deadlock is easy to be generated by multi tasks when visiting the sharing data area and the fault is not easy to be localized are solved. The invention includes that the task without the authority to visit the sharing data area sends an ACTION message to the task with visit authority; after the task with visit authority receives the message, the task runs corresponding program and operates the sharing data area according to the content of the message; after the running is over, the task with visit authority sends a responses message to the sender of the ACTION message; the responses message comprises the result of running; the sharing data area of the invention need not to be protected and the sharing data area data can be safely visited among tasks. The lock and other protection mechanisms are not considered and the code is simplified. The deadlock can not be generated without lock ,so the problem of deadlock is completely avoided.

The invention discloses a method and system for SSD firmware to access NandFlash. The method comprises the steps of initializing a plurality of Command state structural bodies capable of being executed in parallel, wherein any Command state structural body is matched with an asynchronous state machine; applying any common state structural body; storing the state of any module in the current process by using a context mechanism; jumping out of the asynchronous state machine after the state in the current process is executed; and processing the asynchronous state machine according to a sequenceby polling the IPC feedback information returned by the NandFlash. The system comprises an initialization module, an application module, a storage module, a jump module and a processing module. According to the method and the device, the CPU resources can be fully utilized under the condition that different modules on the same CPU can respectively operate the NandFlash resources without generatingdeadlock, so that the utilization rate of the CPU and the NandFlash access efficiency of SSD firmware are greatly improved.

The invention relates to a human motion prediction method based on a recurrent neural network of adversarial learning. The method mainly comprises the following steps: firstly, carrying out data preprocessing, and converting data into an Euler angle in a quaternion space to train a network model; and then, constructing a GRU recurrent neural network model. In the model, a training algorithm basedon adversarial learning and a quaternion constraint loss function are adopted to improve the prediction precision of the model, and the stiffness phenomenon generated by a long-time prediction sequence is improved. Tests show that the method can predict the long-time motion trend without causing stiffness of the predicted posture, the predicted motion error is lower than that of other methods, andthe predicted motion trend is more accurate.

The invention discloses a PS2 controller suitable for long-distance transmission and an implementation method. The controller packages a master device interface module to form a slave core control unit, and packages a slave device interface module to form a master core control unit. Interface communication state monitoring and error checking are carried out, and abnormal information of a slave device end is filtered; and information encoding, decoding and checking, that is, uniform encoding, transmitting and decoding are carried out on the decoding information, the interface state informationand the data checking information to ensure normal communication under the condition of unstable transmission link or stronger interference. The controller is connected with master equipment on the upper portion and slave equipment on the lower portion, master-slave equipment interface time sequence control is achieved, standard PS2 protocol communication is supported, and basic guarantee is provided for long-distance transmission of the PS2 equipment. The master-slave control unit is designed to be modularized, communication data are processed in parallel, and the design readability and the secondary development value are enhanced to a certain extent. The controller encodes, decodes and transmits the communication data and checks the data, so that the stability and the anti-interference performance of the controller are enhanced.

The invention discloses a process data read-write optimization method and a system of a mobile system. The method comprises the steps of through conversion of three processes, when the main socket receives a read-write request of each read-write process, reading and writing data of the server side according to the reading and writing request; sequentially putting the read-write processes into a data access queue according to the occurrence sequence of the read-write requests, writing the unfinished read-write requests into a process record queue by the inspection process, and converting the inspection process into a blocked state when the number of the read-write requests in the process record queue is greater than a record threshold; under the condition that the process is disconnected with an online database or other data sources, ensuring normal work of the application of the terminal equipment; and a recovery mechanism is provided, so that the process of the terminal equipment cannot be deadlocked. The data read-write process of the process is not influenced in the area switching of the network communication base station; and the phenomena of jamming and false death of a terminal device program are reduced.

The invention discloses a numerical control direct-drive type electric screw press which comprises a machine body (3), a motor (1) arranged on the top of the machine body (3), a slider (7) arranged inthe machine body (3), a workbench backing plate (4) arranged at the bottom of the slider (7), a lubricating system (5) and a clearance adjusting mechanism (9); the outer side of the motor (1) is provided with a cooling system (2); and the clearance adjusting mechanism (9) comprises a power transmission unit and a clearance adjusting unit and is used for converting rotary motion to linear motion of the slider (7). For the screw press, an axial clearance of a main screw rod can be accurately adjusted by the clearance adjusting mechanism, rapid real-time circulation cooling of the motor is realized with the cooling system, the lubricating system realizes full lubrication between the main screw rod and a main nut, the motor directly drives a flywheel to rotate for accumulation of energy, androtating motion of the flywheel is converted to up-down linear motion of the slider by a screw pair so as to realize compression forging formation of a part.

The invention discloses a method for realizing data sharing among tasks. The problems that deadlock is easy to be generated by multi tasks when visiting the sharing data area and the fault is not easy to be localized are solved. The invention includes that the task without the authority to visit the sharing data area sends an ACTION message to the task with visit authority; after the task with visit authority receives the message, the task runs corresponding program and operates the sharing data area according to the content of the message; after the running is over, the task with visit authority sends a responses message to the sender of the ACTION message; the responses message comprises the result of running; the sharing data area of the invention need not to be protected and the sharing data area data can be safely visited among tasks. The lock and other protection mechanisms are not considered and the code is simplified. The deadlock can not be generated without lock ,so the problem of deadlock is completely avoided.

The invention belongs to the field of high-voltage lamp strip control and drive, and particularly relates to a multicolor high-voltage lamp strip control and drive device for high-voltage end control.The multicolor high-voltage lamp strip control and drive device comprises a commercial power input and control module (A), a surge protection module (B), an EMC protection module (C), a mode indication module (D), a high-voltage detection module (E), a full-bridge rectification module (F), an output selection control module (G), an output detection and protection module (H) and a lamp strip output module (I). The on-off (brightness and the like) of lamp strips with corresponding colors is controlled by directly controlling the on-off (phase and the like) of a 220V or 110V mains supply phase line, so that free selection and intelligent control of light modes are realized.

The invention discloses a self-adaptive optimistic concurrency control method, which is substantially applied to a multiple user concurrent environment based on a main memory. The method comprises twoconcurrency control methods that an optimistic concurrency control is converted into a pessimistic concurrency control and the pessimistic concurrency control is converted into the optimistic concurrency control; when the system is under the environment of high collision rate, a concurrency control policy is converted into the pessimistic concurrency control from the optimistic concurrency control; and when the system is under the environment of low collision rate, the concurrency control policy is converted into the optimistic concurrency control from the pessimistic concurrency control. According to the elf-adaptive optimistic concurrency control method, compared with the pure optimistic concurrency control method or the pessimistic concurrency control method, the defect that the concurrency capability is reduced under the environment of high collision rate or the unlocking of a lock is avoided, and the concurrency capability of the system can be greatly improved.

The invention discloses an underwater acoustic field signal real-time generator, which comprises a multi-type signal sample generation module, a signal synthesizing module, a first data buffer, a second data buffer, a first-in-first-out (FIFO) buffer, a frame interrupt synchronization pulse generator and a hard clock generation module, wherein the second data buffer receives and forwards various waveforms generated by the signal sample generation module; the signal synthesizing module mixes the signal waveforms generated by the signal sample generation module and outputs the mixed waveforms; the first data buffer receives and forwards the multiple mixed waveforms generated by the signal synthesizing module; the FIFO buffer receivers data forwarded by the first data buffer and outputs the received signal; the frame interrupt synchronization pulse generator monitors the state of the FIFO buffer, generates a synchronization pulse signal according to the state and controls the first and second data buffers by the synchronization pulse signal; and the hard clock generation module provides a time reference. The signal real-time generator has a compact structure, runs stably and can be universally applied to various different types of sonars.

The invention relates to an oil hydraulic cylinder for braking. The oil hydraulic cylinder used for a pair of calipers for braking comprises an oil hydraulic cylinder body and a piston, wherein the oil hydraulic cylinder body is provided with an accommodation space horizontally arranged inside the oil hydraulic cylinder body for accommodating the piston movably in a sealing state. The accommodation space is divided into a first accommodation chamber and a second accommodation chamber, wherein the diameter of the second accommodation chamber is smaller than that of the first accommodation chamber. The piston is provided with a first part and a second part which are respectively and adjacently arranged in the first accommodation chamber and the second accommodation chamber in a movable and sealing state. The oil hydraulic cylinder provides different braking powers of two stages and does not have the phenomenon of deadlock or out of control due to oversized braking power. With simple structure, the oil hydraulic cylinder is easy to manufacture and assemble.

The embodiment of the invention discloses a concurrent transaction scheduling method and a related device, which are used for serializable pre-judgment in transactions. The method disclosed by the embodiment of the invention comprises the following steps of: acquiring a resource set of each transaction in a submission queue; transmitting the transactions in the submission queue into a waiting queue; judging whether each transaction in the waiting queue is dependent on any transaction in an execution queue or not according to the source set of each transaction in the waiting queue, and transmitting the transactions independent of any transaction in the execution queue in the waiting queue into a quasi execution queue if the transactions in the waiting queue are independent of any transaction in the execution queue; and dividing the quasi execution queue into an executable queue and a non-executable queue, transmitting the transactions in the non-executable queue into the waiting queue and transmitting the transactions in the executable queue to a CPU (central processing unit). By the technical scheme disclosed by the invention, the occurrence of deadlock phenomena can be avoided, thereby improving the overall running efficiency and performance of a system.

The invention relates to the technical field of rehabilitation equipment, and discloses an automatic slope speed control mechanism for a common wheelchair. The automatic slope speed control mechanismcomprises two groups of fixed connecting rods and a control main shaft, two groups of mounting supports are fixedly mounted on two sides of the outer surfaces of the fixed connecting rods respectively, and the top ends of the mounting supports are in threaded connection with the interior of the common wheelchair. According to the automatic slope speed control mechanism for the common wheelchair, balancing weights movably connected to the fixed connecting rods in a sleeving mode are arranged so that a locking tooth block can be driven to lock a ratchet wheel to prevent slipping when the wheelchair goes uphill, friction plates can be driven to rub speed reduction disc bodies to provide certain friction braking force when the wheelchair goes downhill, the speed of the wheelchair in the downhill process is reduced, the whole linkage process is autonomously regulated and controlled through the influence of gravity borne by the balancing weights on the slope, manual operation is not needed,the flexibility is high, the controllability is good, and the safety and reliability of the wheelchair on the slope are effectively improved.

The present application discloses a method and system for accessing NandFlash by SSD firmware, initializing multiple command state structures that can be executed in parallel, and any command state structure matches an asynchronous state machine; applying for any command state structure; using The context mechanism stores the state of any module in the current process; after executing the state in the current process, it jumps out of the asynchronous state machine; by polling the IPC feedback information returned by NandFlash, the asynchronous state machine is processed in sequence. The system includes an initialization module, an application module, a storage module, a jump module and a processing module. Through the present application, it is possible to make full use of CPU resources while ensuring that different modules on the same CPU can operate NandFlash resources without deadlock, thereby greatly improving CPU utilization and the efficiency of SSD firmware accessing NandFlash.