7results about How to "Improve troubleshooting speed" patented technology

This invention discloses a method, apparatus, vehicle, and storage medium for processing DDS messages. The method includes: obtaining participant identifiers and establishing a classification strategy table based on the participant identifiers; obtaining subscriber identifiers, publisher identifiers, and topic names, and establishing a correspondence between participants, subscribers, publishers, and topic names according to the classification strategy table; obtaining RTPS sub-message data, and classifying and storing the RTPS sub-message data according to the correspondence. This application allows developers or users to intuitively see the interaction between different DDS applications, thereby quickly locating the problem and improving the troubleshooting speed during DDS network transmission.

The application belongs to the technical field of computers and provides a fault diagnosis method and system based on equipment maintenance knowledge base. The method comprises the following steps: constructing an equipment maintenance knowledge base, wherein the equipment maintenance knowledge base comprises phenomenon events, fault causes and the relationship between the phenomenon events and the fault causes, the relationship is a fault scene, and the fault scene comprises a single cause scene and a combined cause scene; acquiring a last node in a fault diagnosis path as a phenomenon event, retrieving a fault scene of the phenomenon event, and if the retrieval result is empty, the phenomenon event is a fault diagnosis result. The single cause scene can realize the reasoning ability of the traditional decision tree rule, the combined cause scene is combined with the single cause scene, the fault combination condition traversal with exponential complexity can be automatically expanded based on a small amount of structured expression, the knowledge representation is simplified, and the complexity and workload of the construction and maintenance of the knowledge base are reduced.

The application relates to the technical field of electrical engineering fault diagnosis, and provides a fault diagnosis method and system of a cascade H-bridge converter. g dc The system is determined whether an open-circuit fault of a power device occurs and a suspicious fault tube pair is determined by comparing with a preset threshold value; the DC bus voltage equalization control is cut off from the system, the DC bus voltage equalization control of the remaining modules except the fault module is restored after the fault module is located; the fault module is short-circuited by changing the driving signal of the power device of the fault module, and the specific fault switch tube is located; the system is restored to stable work by using the redundancy of the modulation coefficients of other modules. After the open-circuit fault occurs, the fault device is quickly, efficiently and reliably located and the system is restored to normal work by temporarily cutting off the voltage equalization control.

The present application relates to the field of optical cable routing survey, and discloses an optical cable routing determination method based on an exciter, an optical sensing system, equipment and a storage medium. The method comprises: the exciter converts device information and position information of the exciter into voice information based on a start instruction issued by a server, and plays the voice information to generate sound waves, which act on an optical cable arranged around the exciter to cause deformation, an optical cable sensing device acquires reflected light signals returned based on the deformation, and obtains the position of the optical cable well based on vibration information, and the server obtains the optical cable routing based on the positions of the optical cable wells. The scheme places an exciter capable of emitting specific voice content on the optical cable well, analyzes vibration characteristics in the optical cable to obtain the position of the exciter, thereby determining the optical cable routing, ensuring the positioning accuracy of the optical cable well, improving the accuracy of the optical cable routing determination result, and improving the optical cable routing troubleshooting speed.

The invention discloses a fixed value dynamic switching method, device and system based on real-time state perception, and the method comprises the steps: calculating a current voltage deviation rate, a current voltage change rate, a current frequency deviation rate and a current frequency change rate based on the obtained real-time electrical quantity of a transformer substation; inputting the voltage and the frequency at the current moment into a time sequence prediction model to obtain a prediction result, wherein the prediction result comprises a voltage prediction value, a frequency prediction value and the confidence coefficient of each prediction value; combining the current voltage deviation rate, the current voltage change rate, the current frequency deviation rate and the current frequency change rate to perform effectiveness evaluation on the prediction result; aiming at the effective prediction result, generating a fault constant value by adopting a hierarchical control strategy, and writing the fault constant value into a standby constant value area; and when the switching requirement is met, replacing the current constant value with the generated fault constant value. According to the method, the problems of poor adaptability, dependence on manual switching and low switching efficiency of a traditional fixed value strategy in a high-proportion new energy power grid can be solved, and the risk of misoperation of a stability control device is reduced.

The application relates to a power distribution network fault positioning method, device, equipment, storage medium and product. The method comprises the following steps: in response to a fault occurring in a power distribution network, acquiring electrical signals of different fault recording devices in the power distribution network before and after the fault occurring in the power distribution network; processing each electrical signal respectively to obtain time-frequency characteristics of the corresponding fault recording device; selecting at least one candidate fault line from different power distribution lines of the power distribution network according to the time-frequency characteristics; and determining a target fault position of the power distribution network according to the time-frequency characteristics and historical fault information of each candidate fault line. The method can improve the fault positioning efficiency and meet the real-time requirement.

The utility model provides a broadcast transmitter antenna switch modularization automatic control system. The system comprises a switch matrix composed of a plurality of switches; the switch matrix is connected with a plurality of transmitters and a plurality of antennas; each switch is correspondingly connected with a switch control module to form a control module matrix corresponding to the position of the switch matrix; the switch control module is connected with a PLC. And the PLC is connected with a client module. According to the application, the automatic control of the transmitter antenna switch is realized, the state of the switch resource shared by multiple transmitters is monitored in real time, the signal interference and equipment conflict are avoided, the accurate execution of the switch action is ensured through the PLC feedback, and the system reliability is improved; the module matrix corresponds to an actual antenna switch matrix, so that the position of a fault module can be quickly found through matrix comparison when a fault occurs; when maintenance is carried out, the module corresponds to the antenna switch, so that debugging at two ends and maintenance of workers are facilitated.