5results about How to "Avoid starvation" patented technology

The application belongs to the technical field of hydraulic control, and particularly relates to an emergency valve group, a hydraulic control system and a working machine. The emergency valve group is applied to a hydraulic control system. The hydraulic control system comprises an oil supply oil circuit and an emergency oil circuit. The oil supply oil circuit is used for supplying oil to an executing element. The emergency oil circuit is used for supplying oil to the oil supply oil circuit in an emergency. An emergency pump is arranged on the emergency oil circuit. The emergency valve group comprises: a flow detection module, which is used for detecting the hydraulic oil flow of the oil supply oil circuit and transmitting a control signal; and a control unit, which is electrically connected with the emergency pump and the flow detection module. The control unit is used for controlling the emergency pump to start in the case of receiving the control signal sent by the flow detection module. The emergency valve group can quickly respond and urgently control the emergency pump to urgently supply oil to the executing element in the case of main pump failure.

The invention belongs to the technical field of chip design, and particularly relates to a crossbar switch and application thereof in an on-chip double loop network. Comprising a control channel, and the control channel comprises a control virtual channel, a request arbitration module, an input port control module, an output port control module, a port state management module and a data selection module. The control virtual channel is responsible for receiving a request of a sending end; the request arbitration module adopts a fair rotation arbiter and is responsible for arbitrating a request for controlling a virtual channel; the input port control module is responsible for feeding back an arbitration result of the request arbitration module to the sending end and sending a data enable signal so as to control the sending end to send data to the crossbar switch matrix; the output port control module controls the data selection module to perform data path selection according to the arbitration result of the request arbitration module and the control information of the virtual channel; the data selection module is responsible for sending a data path selection result to the crossbar switch matrix; according to the invention, high-speed transmission of data is realized under the condition that the chip is small in area.

The application discloses a time slot allocation method and system for multi-protocol coexistence of a shared radio frequency front-end circuit. The method comprises the following steps: periodically receiving all time slot applications in a current period and classifying them into three types of periodic, continuous and indefinite period according to execution characteristics; allocating different priorities to time slot applications of different categories, and calculating a dynamic current permanent priority by combining a permanent priority and a temporary priority; selecting a next to-be-executed time slot application according to the priority, updating all time slot parameters after execution is completed, and performing a cycle. The application can effectively predict and avoid time slot conflicts, significantly improve time slot utilization and communication real-time performance, and meet the requirements of low delay and high throughput, and is suitable for efficient coexistence of various wireless communication protocols in a shared radio frequency front-end environment.

The application discloses an IO scheduling method and device based on a Kylin operating system and a medium, the method comprising the following steps: a BFQ scheduler receives a request, obtains a characteristic value of a process or a thread corresponding to the request, if the characteristic value meets a preset condition, adds the request to an interactive dispatch queue, if the characteristic value does not meet the preset condition, adds the request to other queues; dispatches the request in the interactive dispatch queue until the number of dispatched requests reaches a first value, clears the number of dispatched requests and waits for the completion of the dispatched request, then dispatches the request in other queues until the number of dispatched requests reaches a second value, clears the number of dispatched requests and waits for the completion of the dispatched request, returns to the step of dispatching the request in the interactive dispatch queue until all requests are dispatched. The application solves the problem of lag in starting an interactive application under heavy I / O load of the Kylin operating system.

The application discloses a fire-fighting multi-machine double-priority queue scheduling transmission method and system, and relates to the technical field of fire fighting. The method constructs a task priority dynamic evaluation module, calculates the basic priority score of each task according to real-time fire situation information; constructs a double-priority queue management module, distributes tasks to a high-priority queue or a low-priority queue according to the basic priority score, and performs priority promotion processing on tasks waiting for timeout; constructs a transmission resource allocation module, dynamically adjusts the data transmission bandwidth proportion based on the task quantity weight factor and the priority correction coefficient of each queue; constructs an execution task scheduling module, extracts tasks from each queue in priority order. The application solves the problems of scheduling decision and bandwidth allocation fragmentation, priority evaluation unable to dynamically evolve and long-term task queue retention, and realizes the collaborative optimization of task scheduling and transmission resources.