5results about How to "Increase connection distance" patented technology

The invention discloses a PCIe device remote control method and device, an electronic device and a medium. The device comprises a local server and a remote server. A PCIe hardware equipment control component, a virtual PCIe bus and a plurality of local RDMA (Remote Direct Memory Access) network cards are deployed on the local server; pCIe hardware equipment, a PCIe hardware equipment proxy component and a plurality of remote RDMA (Remote Direct Memory Access) network cards are deployed on the remote server; the PCIe hardware equipment control component is used for realizing virtual PCIe equipment presentation of PCIe hardware equipment deployed on a remote server on a local CPU (Central Processing Unit); the virtual PCIe bus is used for managing the virtual PCIe bus and virtual PCIe equipment on the bus for the local CPU; and the PCIe hardware equipment proxy components are paired with PCIe hardware equipment deployed on a remote server one by one and are used for finishing proxy forwarding of PCIe requests between the remote RDMA network card and the PCIe hardware equipment.

The utility model discloses a foundation rock soil test detection soil sampling device, relates to the sampler technical field, the foundation rock soil test detection soil sampling device comprises a connecting cylinder, the inner wall of the connecting cylinder is slidingly connected with a slide bar, the top end of the outer wall of the connecting cylinder is rotatingly connected with an elliptical shell, the outer wall of the connecting cylinder is sleeved with a torsion spring, and the torsion spring is connected with the slide bar. A first annular groove is formed in the inner wall of the oval shell, a limiting rod is slidably connected to the inner wall of the first annular groove, a rectangular plate is fixedly connected to the upper surface of the connecting cylinder, and multiple sets of first grooves are formed in the front surface of the sliding rod. The limiting rod can be separated from the inner wall of the first groove by rotating the oval ring, then the sliding rod is pulled to lengthen the connecting distance between the connecting cylinder and the sliding rod, in this way, soil of different depths underground can be sampled, limiting of the handle by the pull rod is relieved, the handle can be folded, and sampling is convenient. And then the connecting distance between the connecting cylinder and the sliding rod is shortened to be the shortest so that storage can be carried out, rapidness and convenience are achieved, and applicability is improved.

The utility model discloses an air tightness test fixture for a multi-pipe joint type workpiece, which can automatically provide uniform pressing force, is higher in positioning accuracy, can be stably and tightly attached to the workpiece, and is higher in detection efficiency. The positioning device comprises a supporting frame and is characterized in that a vertical positioning structure is arranged between a top plate and a bottom plate of the supporting frame, and a horizontal positioning structure is arranged between a left vertical plate and a right vertical plate of the supporting frame.

The application discloses a wireless communication control method and platform for wired thread control instruments. The application comprises a computer, a wireless receiver, a self-organizing network controller and wired thread control instruments, and the communication control method is as follows: the self-organizing network controller is used to realize a wireless self-organizing network of a tree-shaped topological structure of the wired thread control instruments, and the self-organizing network grade of the wired thread control instruments is determined according to instrument priority and signal strength; control instructions are issued to corresponding wired thread control instruments step by step according to a link table in the self-organizing network platform; and instrument data is uploaded to the computer step by step according to a connection link table in the self-organizing network platform, and the priority of the instrument determines the order of uploading the instrument data. The self-organizing network controller is used to realize wireless communication control of the tree-shaped topological structure of the wired thread control instruments, and different communication interfaces of the wired thread control instruments are unified, so that the complicated connection of different communication cables between the computer and the wired thread control instruments is simplified, and the distance between the computer and the wired thread control instruments is widened.

The embodiment of the invention provides a communication connection method and device of a vehicle and a digital key, equipment and a storage medium. The method comprises the following steps: determining a connection state of vehicle-mounted Bluetooth equipment and the digital key; when the connection state is a connected state, obtaining first target data according to connection parameters between the vehicle-mounted Bluetooth equipment and the digital key; when the connection state is a non-connection state, obtaining second target data according to broadcast parameters of the vehicle-mounted Bluetooth equipment; adjusting the connection distance according to the first target data so as to enable the vehicle-mounted Bluetooth equipment and the digital key to maintain communication connection in a connected state; or, the connection distance is adjusted according to the second target data, so that the vehicle-mounted Bluetooth equipment and the digital key establish communication connection in a disconnected state. According to the embodiment of the invention, under the connected state, the digital key can be kept connected with the vehicle at a long distance; in the disconnected state, the digital key can be connected with the vehicle at a long distance.