33results about How to "Narrow down the scope of troubleshooting" patented technology

The invention relates to a method and a device for diagnosing automotive electronic control unit faults based on semi-physical simulation. The method comprises the steps that (1) a personal computer (PC) and a control system send standard input information to an electronic control unit to be detected and send standard output response information to a fault diagnosis and display module; (2) the electronic control unit to be detected processes and sends out the output response information; (3) the fault diagnosis and display module compares the standard output response information with output response information of electronic control unit (ECU) to be detected to draw a conclusion whether the electronic control unit to be detected breaks down; and (4) changing some input information, and diagnosing fault properties of the electronic control unit to be detected. The device comprises the PC, the control system and a simulation controller. Compared with the prior art, by means of the method and the device for diagnosing the automotive electronic control unit faults based on the semi-physical simulation, the fault clearing flow of an automotive electronic control is greatly simplified, the fault clearing range is narrowed, the fault diagnosis rate is further improved, maintenance workload result from diagnosis of replacement parts and fund employment amount of stock parts are effectively reduced, thus the maintenance cost is greatly reduced.

The invention relates to a quick network electric power relay protection system and belongs to the technical field of electric power relay protection. The quick network electric power relay protection system comprises intelligent terminals arranged on power distribution equipments, an optical fiber communication network, a network protection device and a network protection server, wherein the optical fiber communication network respectively connects the intelligent terminal with the network protection device, and connects the network protection device with the network protection server, and the intelligent terminal collects analog quantity and switching quantity operating condition data of the power distribution equipment and uploads the data to the network protection device; the network protection device gathers the data uploaded by the intelligent terminals, performs wide-area differential protection calculation and uploads the calculation results to the network protection server; and the network protection server displays the data uploaded by the network protection device, finishes intelligent setting and intelligent control according to the real-time change of network topology, and transmits the data to the network protection device. With the quick network electric power relay protection system, the number of secondary equipments is reduced, the management workload on the operation and maintenance of secondary equipments is relieved, and the benefit maximization of the power system is realized.

The invention provides a determining method for RH vacuum leakage position, belonging to the field of RH vacuum furnace application fault resolution. The position of vacuum system leakage can be determined according to different changes of mass flux of tail gas of the vacuum system and percent concentration of O2 and CO in the tail gas by mass; the specific method is to determine the leakage position by the following technical parameters. The method has the advantages of reducing the fault resolution range to determine the fault position and improving the efficiency of leakage resolution. Meanwhile, the method can predetermine occurrence of an accident, reduce probability of occurrence and extension of accidents, and improve the operation rate of the RH vacuum furnace.

The invention discloses a vehicle-mounted multimedia audio system test method and device, and a vehicle-mounted multimedia system. The vehicle-mounted multimedia audio system test method comprises the following steps: obtaining a test starting instruction emitted from a user, and generating a key node signal test instruction according to the test starting instruction; according to the key node signal test instruction, successively obtaining the signals of N key nodes, and independently testing the signals of the N key nodes; according to a received pin state test instruction, obtaining the state information of other pins, except the pin which outputs a control signal, of a first processor, and independently testing the state information of other pins; and according to a received register state test instruction, obtaining the state information of other registers, except the register of which the storage information is revised, of a second processor, and independently testing the state information of other registers. The troubleshooting time of the vehicle-mounted multimedia audio system can be greatly shortened, and a troubleshooting range can be reduced to a maximum degree.

The invention discloses a quenching detection device and method for a high-temperature superconducting magnet. The quenching detection device comprises a fiber bragg grating string FBG1, a fiber bragggrating string FBG2, a data acquisition module and a data processing module, wherein a plurality of fiber gratings are arranged on the FBG1 and the FBG2; the fiber bragg gratings can sense tiny deformation and temperature rise of the magnet due to quench in time, and are sensitive to the temperature and strain of the high-temperature superconducting magnet; the FBG1 and the FBG2 are wound on thesurface of the high-temperature superconducting magnet in parallel, the FBG1 is attached to the surface of the high-temperature superconducting magnet, and the FBG2 is attached to the surface of the high-temperature superconducting magnet by using mucilage glue, so that the temperature and the strain of each position of the high-temperature superconducting magnet can be rapidly detected at the same time; when the magnet has a local fault, due to accumulation of heat in a local area, the area can quickly change in temperature and strain; and although the voltage of the magnet at the moment is not changed, the fault of the magnet can be detected through the change in temperature and strain, so that the quench detection speed of the high-temperature superconducting magnet is greatly improved.

The invention discloses an intelligent substation process layer physical link fault diagnosis method, and relates to the field of intelligent substations. The method comprises the steps of analyzing an SCD file, and obtaining related information of a logic link of a process layer of a whole station and switch configuration information; Obtaining a path node set of a whole station process layer logic link; Analyzing the chain scission signal, obtaining information related to the chain scission signal, and preliminarily screening out a path node set possibly having problems based on the information; Traversing other non-triggered chain scission signals; based on process layer message information related to the triggered chain scission signal, combining with network message analysis; path nodes possibly having problems are further eliminated based on the starting point port power information, the end point port power information and other means of the logic link related to the triggered broken link signal, and the rest path node sets are ranked according to the probability to obtain a final diagnosis result. On the basis of probability statistics, the fault diagnosis range is furtherreduced, and the positioning accuracy is enhanced.

The embodiment of the invention provides a troubleshooting method, a troubleshooting device and a server, wherein the method comprises the following steps: when an operation request aiming at a firstwebpage web application is received, adding a flag bit for the operation request, and calling a target thread to process the operation request, meanwhile, adding the flag bit for a log generated in aprocessing procedure; when that the target thread generates fault warning is detected, finding out a target log comprising the flag bit from a log base and outputting the target log, thereby facilitating troubleshooting. With the method, the device and the server provided by the embodiment of the invention, a troubleshooting range can be narrowed, and fault processing efficiency can be improved.

The invention discloses an offshore wind plant submarine cable monitoring and protecting system and method, and the method comprises the following steps: carrying out the real-time monitoring of the temperature, strain and disturbance state of a submarine cable, obtaining the ship information through a ship automatic recognition system, and arranging an electronic fence outside the submarine cable, giving an alarm to the ship entering the electronic fence according to the ship navigational speed in the ship information; predicting the trajectory direction of the ship according to data acquired by a ship automatic identification system, tracking the ship through a radar, carrying out view screen shooting on the ship, expelling the ship, and carrying out positioning analysis on a submarine cable fault point. According to the invention, comprehensive monitoring and protection of the submarine cable, which integrates submarine cable state monitoring, AIS ship information monitoring and radar scanning, trajectory prediction and video storage, are realized, so that the operation safety of the submarine cable is guaranteed. And the submarine cable can be conveniently protected from the operation state of the submarine cable, ship hazard early warning and the like.

The invention discloses a communication wire harness troubleshooting method based on bus physical topology. The method comprises the steps: connecting a CAN bus in a test interface through bus equipment, and collecting the online condition of each controller; forming a bus physical topological graph based on the wire harness drawing; and in combination with the online condition of each controller and a bus physical topological graph, the fault range is narrowed, the troubleshooting direction is determined, and the fault position is finally found. According to the bus physical topology special drawing which is formed through redesign and used for troubleshooting the controller wire harness fault, and in combination with the online condition of each controller, the fault troubleshooting range is effectively reduced, the troubleshooting direction is determined, and the fault position can be quickly locked.

The invention discloses a hydraulic motor fault detection method, device and system and an excavator. The hydraulic motor fault detection method comprises the following steps: respectively obtaining actual operation data of each operation characteristic quantity in a hydraulic motor operation characteristic quantity set in a preset time period; judging whether fault operation data exists in the multiple obtained actual operation data or not; when the fault operation data exists, obtaining a fault database, wherein the fault database comprises historical operation data of the operation characteristic quantity corresponding to the fault operation data under each fault; and determining the fault reason of the hydraulic motor according to the fault operation data and the fault database. Therefore, automation of data analysis during fault detection of the hydraulic motor can be realized, so that the efficiency and precision of fault detection are improved, and the labor cost is reduced.

The invention provides a power distribution network fault diagnosis method and system based on multi-source information fusion. The method comprises: analyzing a fault area by utilizing the operationof a fault judgment matrix; analyzing analog quantity information after the fault of a power distribution network by using a Fortescue method; generating phase selection conditions for various faults;solving a target function fusing the analog quantity information and the digital quantity information by using an optimization method based on a genetic algorithm; and constructing a visual management platform of the power distribution network by using a geographic information system to monitor the operation states of all elements of the power distribution network in real time, wherein the geographic information system of the power distribution network diagnoses fault element information through an optimization algorithm after the power distribution network breaks down. According to the invention, the faulty element in the power distribution network can be diagnosed, and the operation information and the position information of the faulty element of the power distribution network can be displayed in real time through the geographic information system, so that the fault diagnosis speed and precision of the power distribution network are improved, and great significance is provided forthe maintenance of the safety and stability of the power distribution network.

The invention relates to the technical field of cable fault detection, and particularly discloses a cable monitoring system. The cable monitoring system comprises a plurality of voltage sensors, detection devices, code sending devices and a decoding device, wherein the plurality of voltage sensors are respectively arranged at each monitoring point of a cable; the detection devices are connected with the voltage sensors one to one; the code sending devices are connected with the detection devices one to one; the voltage sensors are used for acquiring voltage signals on the monitoring points; the detection devices are used for driving the code sending devices to generate codes and sending the codes to the decoding device when the voltage signals are abnormal, wherein the codes are used for indicating positions of the monitoring points; and the decoding device receives the codes and decodes so as to acquire and output position information of the monitoring points. According to the invention, a plurality of monitoring points are reasonably arranged on a cable line, and by detecting voltages on the monitoring points, a cable fault removal range is shortened, and troubleshooting efficiency is improved.

The invention discloses a power distribution network line constant value on-off detection method and system based on a constant value coordination diagram. The method comprises the steps of: dividingmulti-section protection according to the superior-subordinate relation of protection devices in a transformer substation wiring diagram; calculating action current and action time limit of each section of protection by adopting a distance protection conversion method to obtain a constant value of each section of protection, synchronously marking the constant value and tripping logic in the transformer substation wiring diagram, and constructing a constant value matching diagram; and controlling the on-off operation of the power supply side protection device and the power utilization side protection device according to the fixed value matching graph and the belt stringing mode between the transformer substations. By dividing multi-segment protection, a distance protection conversion methodis adopted to calculate protection constant values in a segmented mode, and the efficiency of constant value calculation is improved; and a constant value matching graph is used to assist in controlling the on-off operation of the protection device, thereby reducing the line patrol operation and maintenance time, reducing the workload, increasing the power supply amount, and guaranteeing the power supply safety and reliability.

The invention discloses a method and device for identifying faults of a ground capacitor of a generator terminal circuit breaker. The method includes the steps that the voltage at the stator side of agenerator terminal is acquired; the minimum phase of the ground voltage is set as a fault phase according to a voltage acquisition result, and the voltage-to-earth of the fault phase, the voltage atthe stator side, the zero-sequence voltage-to-earth of a generator stator and the electromotive force of the fault phase are calculated; a phase difference threshold range is set, and the phase relation between the electromotive force of the fault phase and the zero-sequence voltage-to-earth of the stator is compared; if the phase difference between the electromotive force of the fault phase and the zero-sequence voltage-to-earth of the stator is in the phase difference threshold range, it is judged that the ground capacitor of the generator terminal circuit breaker breaks down, and otherwise,it is judged that the ground capacitor of the generator terminal circuit breaker does not break down. By means of the method and device, when ground faults happens to the ground capacitor of the generator terminal circuit breaker, the types of the faults can be reliably identified, the troubleshooting range is narrowed for users, and the troubleshooting efficiency is improved.

The invention relates to the technical field of automobile controllers, in particular to a data recording method and system for a BCM controller and a fault diagnosis method. Class codes are given to BCM action data needing observing according to subclasses; a plurality of storage cells for circularly storing the class codes are set; the class codes corresponding to the BCM action data are continuously and circularly stored in the storage cells, a data number is given to the class code stored in each storage cell, and the data numbers are stored together; and the data numbers are circularly used finite consecutive numbers, and the data number currently stored in any storage cell and the data number stored in the adjacent storage cell in the last round are not continuous. The sequence of recording the data can be distinguished by means of partitioned recording of the data in combination with the data numbers, so that the action executed at last is recognized, the troubleshooting range is narrowed, and problems are solved more rapidly.

The invention relates to a power supply grounding fault troubleshooting device and method for a wind turbine generator. The device comprises an auxiliary power supply module and a control module, wherein the auxiliary power supply module is electrically connected with the control module, the auxiliary power supply module is used for transmitting an over-current protection action signal to the control module if the over-current protection action signal is detected when the power supply grounding fault occurs in a wind turbine generator, the control module is used for determining that the grounding faults exist in multiple auxiliary power supply loops according to the over-current protection action signal and triggering an auxiliary power supply closing signal so as to keep the fault state of the wind turbine generator, the fault state of the wind turbine generator is reset by a maintainer, the auxiliary power supply loops of the auxiliary power supply module to the wind turbine generator are gradually reduced, the auxiliary power supply module and the control module are used for repeated detection so as to check out a target auxiliary power supply loop with a grounding fault, and a grounding fault power supply circuit of the wind turbine generator is correspondingly determined. According to the invention, the power supply grounding fault of the wind turbine generator can be effectively checked, and the maintenance difficulty is reduced.

The invention relates to a mine gas bundle pipe pipeline monitoring system, which includes a power supply on the ground electrically connected to an air pump, a PLC programmable control bundle pipe control cabinet, and an industrial computer. Controlled bundle tube control cabinet The bundle tube is connected to several branch boxes equipped with external power supply boxes in the underground, and the signal conversion interface is connected to the communication interface of several branch boxes by the system communication line. Combine monitoring methods. Ensure the timely and effective troubleshooting of the tube tube failure, improve the availability and reliability of the mine gas tube tube monitoring system, and greatly reduce the troubleshooting scope of the tube tube tube. The real-time data and working status displayed in the display window and the real-time working status window can accurately determine the nature and specific location of the pipeline failure.

The invention relates to a quick network electric power relay protection system and belongs to the technical field of electric power relay protection. The quick network electric power relay protection system comprises intelligent terminals arranged on power distribution equipments, an optical fiber communication network, a network protection device and a network protection server, wherein the optical fiber communication network respectively connects the intelligent terminal with the network protection device, and connects the network protection device with the network protection server, and the intelligent terminal collects analog quantity and switching quantity operating condition data of the power distribution equipment and uploads the data to the network protection device; the network protection device gathers the data uploaded by the intelligent terminals, performs wide-area differential protection calculation and uploads the calculation results to the network protection server; and the network protection server displays the data uploaded by the network protection device, finishes intelligent setting and intelligent control according to the real-time change of network topology, and transmits the data to the network protection device. With the quick network electric power relay protection system, the number of secondary equipments is reduced, the management workload on the operation and maintenance of secondary equipments is relieved, and the benefit maximization of the power system is realized.

The invention provides a cross interconnection type cable fault identification method, unit and system. The cross interconnection type cable fault identification method comprises the following steps of collecting current information data; the receiving end processing device receiving the current information data; calculating the ratio of the sheath ring current data to the load current data, and forming an array; and comparing the array with a preset fault array, and performing fault correlation analysis and judgment. According to the cross interconnection type cable fault identification method provided by the invention, types and the fault sections of the cable faults can be accurately identified and judged, the troubleshooting range of safety operation and maintenance personnel is greatly reduced, labor is saved, and operation and maintenance efficiency is improved.

The invention discloses a fault diagnosis method and system for automobile internal parts or lines and a medium, and belongs to the field of automobile diagnosis. In order to solve the problems that an existing automobile is low in maintenance efficiency and high in cost, the invention provides a fault diagnosis method for automobile internal parts or lines, which comprises the following steps: collecting automobile fault data; sending the fault data to a fault simulation circuit diagram; S3, the fault simulation circuit diagram feeding back a fault part or line according to the received automobile fault data, and feeding back a corresponding maintenance scheme at the same time; and S4, maintenance personnel carring out corresponding automobile fault diagnosis and troubleshooting according to the maintenance scheme. According to the invention, specific fault parts or fault lines are fed back through the fault simulation circuit diagram according to the received fault data, and then a corresponding maintenance scheme is given, so that the time and efficiency of automobile fault maintenance are greatly improved; and a specific fault point can be quickly found according to the fault data, so that the time cost is saved. The whole system is clear in division of labor and simple in composition.

The invention relates to a method for quickly detecting a non-heating fault of an electromagnetic oven, which comprises the steps that an LED (light-emitting diode) is connected to a primary coil of a small power transformer in parallel to act as an indicating lamp, the indicating lamp is placed on the electromagnetic oven, a power switch is turned on so as to enable the electromagnetic oven to get into an operating state, and whether a coil panel has PWM signals or not is detected according to whether the indicating lamp flashes or not. The invention further relates to a device for quickly detecting a non-heating fault of the electromagnetic oven, which comprises a primary coil of a small power transformer and an LED (light-emitting diode), and is characterized in that the light emitting diode is connected to the primary coil of the small power transformer in parallel.

The invention discloses a vehicle-mounted multimedia audio system test method and device, and a vehicle-mounted multimedia system. The vehicle-mounted multimedia audio system test method comprises the following steps: obtaining a test starting instruction emitted from a user, and generating a key node signal test instruction according to the test starting instruction; according to the key node signal test instruction, successively obtaining the signals of N key nodes, and independently testing the signals of the N key nodes; according to a received pin state test instruction, obtaining the state information of other pins, except the pin which outputs a control signal, of a first processor, and independently testing the state information of other pins; and according to a received register state test instruction, obtaining the state information of other registers, except the register of which the storage information is revised, of a second processor, and independently testing the state information of other registers. The troubleshooting time of the vehicle-mounted multimedia audio system can be greatly shortened, and a troubleshooting range can be reduced to a maximum degree.

The invention relates to a method and a device for diagnosing automotive electronic control unit faults based on semi-physical simulation. The method comprises the steps that (1) a personal computer (PC) and a control system send standard input information to an electronic control unit to be detected and send standard output response information to a fault diagnosis and display module; (2) the electronic control unit to be detected processes and sends out the output response information; (3) the fault diagnosis and display module compares the standard output response information with output response information of electronic control unit (ECU) to be detected to draw a conclusion whether the electronic control unit to be detected breaks down; and (4) changing some input information, and diagnosing fault properties of the electronic control unit to be detected. The device comprises the PC, the control system and a simulation controller. Compared with the prior art, by means of the method and the device for diagnosing the automotive electronic control unit faults based on the semi-physical simulation, the fault clearing flow of an automotive electronic control is greatly simplified, the fault clearing range is narrowed, the fault diagnosis rate is further improved, maintenance workload result from diagnosis of replacement parts and fund employment amount of stock parts are effectively reduced, thus the maintenance cost is greatly reduced.

The invention discloses a method and device for identifying faults of a ground capacitor of a generator terminal circuit breaker. The method includes the steps that the voltage at the stator side of agenerator terminal is acquired; the minimum phase of the ground voltage is set as a fault phase according to a voltage acquisition result, and the voltage-to-earth of the fault phase, the voltage atthe stator side, the zero-sequence voltage-to-earth of a generator stator and the electromotive force of the fault phase are calculated; a phase difference threshold range is set, and the phase relation between the electromotive force of the fault phase and the zero-sequence voltage-to-earth of the stator is compared; if the phase difference between the electromotive force of the fault phase and the zero-sequence voltage-to-earth of the stator is in the phase difference threshold range, it is judged that the ground capacitor of the generator terminal circuit breaker breaks down, and otherwise,it is judged that the ground capacitor of the generator terminal circuit breaker does not break down. By means of the method and device, when ground faults happens to the ground capacitor of the generator terminal circuit breaker, the types of the faults can be reliably identified, the troubleshooting range is narrowed for users, and the troubleshooting efficiency is improved.

The embodiment of the invention provides a troubleshooting method, a troubleshooting device and a server, wherein the method comprises the following steps: when an operation request aiming at a firstwebpage web application is received, adding a flag bit for the operation request, and calling a target thread to process the operation request, meanwhile, adding the flag bit for a log generated in aprocessing procedure; when that the target thread generates fault warning is detected, finding out a target log comprising the flag bit from a log base and outputting the target log, thereby facilitating troubleshooting. With the method, the device and the server provided by the embodiment of the invention, a troubleshooting range can be narrowed, and fault processing efficiency can be improved.

The embodiment of the invention provides an interlocking condition detection method and semiconductor process equipment, which are applied to the technical field of semiconductor equipment, and the method comprises the following steps: in the interlocking condition detection process, in response to a starting signal of an action device of the semiconductor process equipment, obtaining a plurality of interlocking lists of the action device, each interlocking list comprises interlocking conditions of one category and target condition values of the interlocking conditions, and under the condition that the target condition values of the interlocking conditions are not matched with the obtained actual condition values, error information of the interlocking conditions is stored according to the categories to which the interlocking conditions belong. A plurality of interlocking conditions of the action device are divided into a plurality of categories, and when the error information of the interlocking conditions is stored according to the categories of the interlocking conditions, in the troubleshooting stage, the troubleshooting range can be narrowed, the fault point can be quickly determined, and the troubleshooting efficiency can be improved.

The invention discloses a fault positioning system and method based on model hit probability distribution, and relates to the fault positioning system. The system comprises: a building module which isused for building a fault model judgment rule base and a fault model base in advance; a receiving module which is used for receiving abnormal data; an analysis module which is used for analyzing thereceived abnormal data and matching the received abnormal data with the pre-created fault model judgment rule base; a generation module which is used for generating a troubleshooting task according tothe received abnormal data, wherein the troubleshooting task comprises a plurality of abnormal data; a matching module which is used for matching a plurality of fault models corresponding to the abnormal data according to the abnormal data in the generated troubleshooting task; a calculation module which is used for performing fault delimitation on the current troubleshooting task according to the plurality of matched fault models, and obtaining a delimitation probability through calculation; and a correction module which is used for confirming or correcting the obtained fault delimitation probability to obtain a final fault delimitation probability.