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

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 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 discloses a virtual and real loops association mapping and diagnosis method of a virtual and real diagnosis system of an intelligent substation, and the method comprises an association mapping method of a process layer virtual and real loops and a diagnosis method of the process layer virtual and real loops; the association mapping method of the process layer virtual and real loops comprises the following steps: 1, building a real loop model; 2, building an association relation between the real loop and a message block, namely defining a sending port and a receiving port, and a sent or received message block APPID; 3, building the association relation between the port and a virtual loop broken link warning signal, port power and port state warning signal; 4, storing the configured association relation in a secondary operation and maintenance model file; 5, parsing a SCD model and the secondary operation and maintenance model, and storing the model association relation ina library. The association relation of the real loop and the virtual link is built, and technical problems, such as failure in building of process layer virtual and real loops mapping and implementation of diagnosis of process layer virtual and real loops, of the virtual and real loops of the intelligent substation are solved.

The present invention relates to a method and system for fault diagnosis of industrial control equipment. The diagnosis method includes: connecting the faulty transmission link to the diagnosis link, and starting the diagnosis; sending a diagnosis request to make the first node module generate diagnosis data The diagnostic data is transmitted to the third node module through the diagnostic link; according to the situation of the third node module receiving data, it is judged that the faulty node module occurs; wherein, one end of the diagnostic link is connected to the first node module , the other end is connected to the third node module; the original function of the faulty transmission link is to transmit the data of the first node module to the third node module through the second node module. The method of the present invention can narrow the scope of fault diagnosis, quickly determine the faulty node module, and improve the diagnostic efficiency; in addition, the method does not require maintenance personnel to go to the site to check one by one, and the fault information diagnosed can be sent to the remote terminal, Save time and labor costs.

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 invention relates to a rivet conveying device with self-adaption performance. The rivet conveying device with the self-adaption performance comprises a cylinder, a base and a support; the base isarranged on the lower portion of the support; and the cylinder is arranged at the front end of the support. The rivet conveying device with the self-adaption performance is characterized in that the upper end of the support is provided with a slide groove; an arc-shaped pipeline is machined in the base; a rivet conveying pipe matched with the structure of the arc-shaped pipeline is detachably arranged in the arc-shaped pipeline; the rivet conveying pipe is of an integrated structure which is easy to bend and has a smooth inner wall, and is used for conveying rivets into the sliding groove in the support; and the cylinder is used for providing power for pushing the rivets to preset positions along the sliding groove. The rivet stuck problem occurring in a conveying pipeline in the automaticrivet conveying process can be effectively solved, and the rivet conveying reliability is further 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.