51results about How to "Simple function implementation" patented technology

The invention discloses an automatic hydraulic control leaping weir initial rainwater catch basin and a flow closure method. The automatic hydraulic control leaping weir initial rainwater catch basin and the flow closure method are suitable for the improvement of a bypass flow rainwater pipeline. The catch basin comprises a catch basin body, a flow inlet pipe, a water closure pipe, an automatic hydraulic control weir body, four limiting blocks, a floating cylinder, sector flow side baffles, flow discharging small holes, a separation wall, an overflowing pipe, a manhole, steps, a weir plate shaft and the like. The flow closure method is conducted by the catch basin and when it rains, flow of the water inlet pipe is enlarged along with the enlargement of rainfall. When the flow of the water inlet pipe is enlarged to a certain degree, a flow-jetting outer curve crosses the automatic control weir. According to the automatic control weir, a weir plate is opened under the buoyancy of the floating cylinder and the water flow in the flow inlet pipe is completely abandoned until the amount of the water flow of the flow inlet pipe is nearly zero. Due to the flow discharging action of the flow discharging small holes, the floating cylinder descends, the weir plate is reset, and clean rainwater can enter a water receiving body at the later period. The catch basin is completely controlled through hydraulic power, other control devices are not needed, operation is stable, maintenance is simple, and management is convenient.

The invention discloses a space-borne communication device for realizing ARP and UDP protocol data communication based on VHDL language, comprising an Ethernet physical layer synchronization module, an ARP / UDP data analysis module, a parallel CRC check module, an ARP data analysis module, an ARP Learning control module, ARP receiving module, ARP sending and response module, UDP data control module, UDP data analysis module, UDP data receiving module, UDP data sending module and ARP / UDP data sending selection module. The invention uses VHDL language to complete the distinction between ARP protocol data and UDP protocol data, complete ARP application and response to ARP request, and complete receiving and sending of UDP data. The invention has the advantages of common data processing protocols, less resource occupation, good portability, etc., can be applied to various types of FPGAs, is especially suitable for simple UDP message processing, and avoids using complicated protocol stacks.

The invention relates to a low-voltage distribution station topology identification method, which belongs to the field of distribution automation in electric power systems, in particular to a method for automatically identifying the low-voltage station topology. It is realized based on the TTU, the wave trap installed at the incoming line end in the distribution box and the branch monitoring unit; the branch monitoring unit includes an uplink module and a downlink module respectively installed at both ends of the wave trap; the uplink module and the upper level distribution box exchange topology To identify commands, the downlink module and the lower distribution box exchange topology identification commands; the topology identification commands are transmitted through the power line through the frequency band blocked by the notch filter; the TTU sends the topology identification commands, and each node forwards the commands and adds itself to the commands Information, TTU summarizes the returned topology identification commands, and completes topology identification according to the identity information in the commands. With the present invention, the communication mechanism of direction controllable communication lines and command forwarding is adopted, and the logic is clear; the topology identification command is limited to transmission between two distribution boxes, and the control is simple; in the summarized information, the position of the ID indicates the topology Subordinate relationship, TTU is easy to implement topology generation.

A system and method for realizing dual-node interconnection pseudo-wires relate to the technical field of wireless backhaul network applications. The system includes two bridge nodes, at least one access side node and at least one core side node, the two bridge nodes are respectively connected to each An access-side node and each core-side node are connected, and the two bridge nodes are divided into an active node and a standby node. Both the active node and the standby node are provided with an access-side interface, a dual-node interconnection pseudo-wire-side interface and a core side interface, and any two interfaces on the same bridge node communicate with each other; a dual-node interconnection pseudo-wire side virtual circuit is set between the active node and the standby node, and the access-side node is connected to the active node and the standby node respectively. There is an access side virtual circuit, the virtual circuit on the side of the dual-node interconnection pseudo-wire and the virtual circuit on the access side are bound in a dual-node interconnection pseudo-wire group, and the virtual circuit on the side of the dual-node interconnection pseudo-wire and the virtual circuit on the access side are There are respectively superimposed automatic protection switching signaling channels.

The invention provides an AGV (automated guided vehicle) battery change device, a change method and a battery transportation system. The battery change device comprises a shell as well as a supportingmechanism and a pushing mechanism which are arranged in the shell; the supporting mechanism comprises at least two supporting assemblies which are arranged in parallel; each supporting assembly is used for supporting a to-be-changed AGV battery; the pushing mechanism comprises a screw rod assembly, a portal frame assembly, an electric control assembly and a depth camera; and the pushing mechanismis used for driving the to-be-changed AGV battery to move on the supporting mechanism along the length direction to enable the AGV battery to come in and go out of the shell. By the AGV battery change device, semi-automatic change of the AGV battery can be realized, the workload of staff is greatly reduced, the change time of the AGV battery is saved and the change efficiency is improved.

The invention relates to an inclined well lid alarm system and an alarm method. The inclined well lid alarm system comprises a well lid seat ring, an outer cover for sealing the well lid seat ring is arranged on the upper portion of the well lid seat ring, an inner cover is arranged in the well lid seat ring, the inner cover is provided with a groove for containing a sealed waterproof box, at least two symmetric glass containers are obliquely arranged in the sealed waterproof box, and mercury switches for detecting inclination of the inner cover are arranged in the glass containers. A circuit board is arranged in the sealed waterproof box, and provided with an MCU, a power module, a communication module and a driving module, the power module, the communication module and the driving module are connected with the MCU, and the driving module is used for driving the mercury switches. The inclined well lid alarm system is simple in circuit function, when a well lid is opened, long conductors and short conductors are connected through sliding of mercury in the mercury switches, and therefore a well lid opening alarm is given out.

The invention discloses a design method for a dual-polarized orbital angular momentum state multiplexing metasurface, which belongs to the field of electromagnetics; specifically, firstly, an anisotropic unit of a dual-polarized reflective metasurface is designed, the unit structure is simulated, and the unit structure size is established The corresponding relationship with the reflection phase; then, design a metasurface for a beam of dual-polarized electromagnetic waves, modulate the incident wave into a vortex electromagnetic wave, and deflect it to a direction perpendicular to the metasurface, and calculate the conditions that the metasurface reflection phase needs to meet; based on Therefore, for multiple beams of dual-polarized electromagnetic waves with different incident angles, they are simultaneously modulated into vortex electromagnetic waves and deflected to the same direction perpendicular to the metasurface, and the conditions that need to be satisfied by the reflection phase of the metasurface when coaxial output is calculated are calculated; Finally, the incident direction of multiple beams of electromagnetic waves is set, and the phase distribution of each unit of the metasurface is used to model, and the dual-polarized orbital angular momentum state multiplexing metasurface is obtained for verification. The unit structure of the invention is simple, and the function is easy to realize.