258 results about "ControlNet" patented technology

The invention relates to the field of precise railway measurement, high speed railway rail detection and security and digital railway, in particular to a system and a method for carrying out movable precise measurement of the high speed railway and synchronously obtaining total factor data along the line of the railway on the basis of GPS (Global Positioning System) / IMU (Inertia Measurement Unit) positioning and orientation, laser scan and digital imaging technologies. The invention further relates to a special railway measurement mark. The system consists of a laser scanner (1), a digital imaging device (2), a GPS receiver (3), an IMU (4), an industrial computer (5) and a power supply unit (6), and the system can obtain three-dimensional point clouds of rail, roadbed and peripheral environment of the high speed railway and digital images oriented by the earth. The method comprises a method for carrying out movable precise measurement movable precise measurement of the high speed railway and a method for improving the measurement precision by carrying out the simultaneous adjustment with a control point of a rail control network (such as a CPIII foundation pile control network). The system has high integration degree and has the characteristics of high efficiency and high precision, and the precision of the data can reach millimeter level.

The topology discovering message transmitted periodically by Loop control net bridge returns to control net bridge the whole loop, and records the state of net bridge and link. The control bridge notifies the topology message to other net bridge through topology instruction, and appoints protective net bridge and protective port to prevent net bridge from blocking protective port, and avoids data to cycle in loop. The net bridge selects shortest path, and implements spatial reuse according to the topology message. Meanwhile the net bridge use heart rate message to examine connectivity of link. When the failure of link is found, it notifies protective net bridge to accomplish fast protection switching.

The invention provides a method for acquiring network configuration information and related equipment. The method comprises the steps that a strategy control network element sends request informationto a data analysis network element, the request information is used for requesting network configuration information corresponding to each slice network list in at least one slice network list, and each slice network list comprises one or more slice networks; and the strategy control network element receives the network configuration information corresponding to each slice network list sent by thedata analysis network element. In the technical scheme, the policy control network element can send the service quality requirement of the slice network list to be acquired to the data analysis network element. And the data analysis network element can send the corresponding network configuration information to the strategy control network element according to the requirements of the strategy control network element. Therefore, the technical scheme provides a method for effectively acquiring the network configuration information.

The embodiment of the invention provides a communication method, device and system. According to the scheme, the method comprises the steps the network equipment sends transmission network informationto the strategy control network element, the strategy control network element formulates a control strategy according to the transmission network information and transmits the same to a network device, the network equipment correspondingly adjusts the service mode according to the control strategy, the problem that the efficiency and reliability of data transmission are affected due to the fact that the used service mode is not matched with the current transmission network in the end-to-end data transmission process can be avoided, and the efficiency and reliability of data transmission can be improved.

The invention relates to a method for automatically measuring coordinates of a target point of a fully mechanized coal mining face and a measuring robot system. According to the embodiment of the invention, a gyro total station searches a known control point identifier and identifies a point number of the known control point identifier, and queries the point number and a corresponding geodetic coordinate in a control point data file or a database; the geodetic coordinates of the gyroscopic total station are determined according to the geodetic coordinates of the control points, the true northorientation angles of the coordinates from the control points to the gyroscopic total station and the angle distance measurement values of the gyroscopic total station; and according to the searchingazimuth angle and the angle range parameter, a fixed or moving target point identifier is searched in the fully mechanized coal mining face, the point number is identified, the geodetic coordinate ismeasured and calculated, and thus, geodetic coordinate-based relay conduction and positioning of the target point in the fully mechanized coal mining face of the mine are realized. A plurality of gyroscopic total stations can also be installed on the fully mechanized coal mining face to form a geodetic coordinate control network, and full coverage of the geodetic coordinate measurement area of thefixed or moving target point of the fully mechanized coal mining face is achieved.

The invention provides a CDN content distribution network redirection method and system, relates to the technical field of communication, and is used for solving the problem that an edge service nodecannot be flexibly redirected in the prior art. The method comprises the steps that a first edge service node confirms that a base station connected with a target terminal is changed, generates CDN redirection information and sends the CDN redirection information to a scheduling control network element; the scheduling control network element receives the CDN redirection information sent by the first edge service node and determines an available second edge service node; then, the scheduling control network element sends a second service request of a target terminal to a second edge service node, and the second edge service node provides CDN service for the target terminal; and the scheduling control network element sends the access address information of the second edge service node to thetarget terminal. The method and system are applicable to a scenario in which a terminal switches a base station.

The invention discloses a method for measuring a CPII control network in a long and large tunnel with a receiving well, and relates to the field of control network measurement of rail transit. The measurement method mainly comprises the steps of (1) CPII remeasurement and encryption outside a hole: forming a triangular or geodetic quadrilateral connected strip-shaped net by adopting a GNSS staticmeasurement mode and an edge connection type net, and performing unified adjustment; (2) receiving well connection measurement: carrying out in-hole introduction edge measurement by adopting a one-well orientation principle, calculating the coordinates of a reflective sticker fixed by a steel wire on the ground through edge measurement and angle measurement of a ground total station, transmittingthe coordinates of the reflective sticker below the vertical shaft to the coordinates of the reflective sticker below the vertical shaft through the steel wire for orientation again, and then introducing the coordinates into the point position buried in the tunnel (3) CPII measurement in the tunnel: adopting a free observation station method; (4) data processing; and (5) final result checking. Themethod provided by the invention is good in point position stability, high in net type strength and flexible in observation station arrangement; the centering error is reduced, and the angle and distance measurement precision is improved.

The invention discloses a method, device and system for gateway device diagnosis. The method includes that a diagnosis project selection page is sent to an operation terminal and displays at least one diagnosis project; a request sent by the operation terminal and used for diagnosing a target diagnosis project is received, and the target diagnosis project is the diagnosis project selected on the diagnosis project selection page; a command for diagnosing the target diagnosis project is sent to a gateway device, and a diagnosis result of the target diagnosis project is obtained; and the diagnosis result of the target diagnosis project is sent to the operation terminal. The method, device and system for the gateway device diagnosis enables a user to control the gateway device at the operation terminal to perform the diagnosis by establishing communication connection between a net management server and the operation terminal, and is rich in selectable diagnosis projects and convenient for the user.

The invention relates to an asymmetrical carrier communication system of an electric energy meter, comprising an electric energy meter gateway, a control network bridge and a white information appliance load, wherein the electric energy meter gateway is accessed between a phase line and an N phase in a three-phase four-wire system at the low voltage side of a 10 kV / 0.4 kV distribution transformerof an electrical power system, the control network bridge is accessed between the phase line and N phase of the electrical power system by the electric energy meter gateway, the white information appliance load which is taken as a load is electrically connected with the control network bridge, and the digital communication is carried out between the electric energy meter gateway and the control network bridge and between the electric energy meter gateway and the white information appliance load; and a voltage mode FSK (frequency shift keying) or S-FSK (spread frequency shift keying) modulating signal is adopted for the communication between the electric energy meter gateway and the control network bridge, and a current mode FSK or S-FSK modulating signal is adopted for the communication from the control network bridge to the electric energy meter gateway.