769results about How to "Troubleshooting" patented technology

The invention provides a software update system and a method. The software update method provided by the invention comprises the following steps: an update strategy module sets an update strategy according to information of a query version management module; the update strategy module checks whether the current version of a client is in line with the update strategy or not after the client logs in a server and returns a check result to the client; the client starts an update execution module to initiate the software update when being in line with the update strategy; and the update execution module downloads an update software package from the server and executes the update. When a fault occurs, the update software package is replaced by a fault repair package, and the software update method can be utilized for realizing the fault repair. The software update process and the fault maintenance process can become simpler and more controllable by setting the update strategy through the software update system and/or the method, and the practical effects are very significant.

The invention discloses a fault-tolerant sliding-mode control method for a near-space vehicle. According to the fault-tolerant sliding-mode control method for the near-space vehicle, for the situation that the order of the magnitude of external disturbance in a quick loop and slow loop system is greatly larger than the order of the magnitude of uncertain times of the system, the nonlinear disturbance observer technology is used for processing hybrid disturbance, and unknown hybrid disturbance is estimated by a disturbance observer through known system information; in order to solve the problem that saturation of the control surface of the near-space vehicle is limited, the upper bound of the deflection angle output of a steering engine is applied to design of a control law, it is guaranteed that the input is within a certain range, auxiliary variables are designed, the deflection angle output of the steering engine is automatically adjusted through the self-adaption law, and therefore the situation that when the upper bound of the deflection angle is too large, the output is too large is avoided; a compensator is established through a radial basis function neural network and is used for fault-tolerant compensation when the steering engine breaks down, and therefore the problem that the steering engine of the near-space vehicle breaks down is solved. By the adoption of the fault-tolerant sliding-mode control method for the near-space vehicle, under the conditions of system uncertainties, unknown external disturbance, limited input saturation and a fault of the steering engine, the near-space vehicle has good control performance.

The invention relates to a flow measuring device of a stream, which fixes at least two dynamic pressure sensors on the measuring path of the changing cross-sectional area used to measure the undulating quantity value of restricting differential pressure which can measure the stream flow. The device overcomes the traditional shortages and can measure multiply two-phase flow. When adding a phase measuring device on the invention, it can measure two-phase flow with much accuracy and can be used to measure oil, gas and water three-phase flow.

The invention discloses an intelligent street lamp control system. The system mainly comprises an intelligent street lamp controller, a wireless gateway (a base station), and the like, wherein a core die set comprises a CPU, a wireless die set unit, a longitude and latitude time control unit, and the like; the wireless die set unit in the system is in data communication with the wireless gateway (base station); the wireless gateway (base station) is connected to a service engine which is in data interaction with a cloud data server; the cloud data server is connected to a plurality of client sides through network. The system has the advantages of automatically generating a control strategy, being intelligent in the whole process, remotely monitoring through a plurality of platforms, being high in reliability, high in interference resistance, theft-proofing, and capable of automatically inspecting faults. Therefore, the problem of energy waste of a street lamp is solved; the service life of the lamp is prolonged; the local routing inspection, the fault positioning and the cable theft-proofing of the street lamp are ensured; in addition, the intelligent strategy control of the street lamp is achieved; the remote commanding and dispatching can be carried out, so that various emergencies can be quickly and effectively handled.

The invention discloses a floating barrel duckbilled lotus root digging machine, which comprises a chassis frame (14), a power water pump room (9), a pump fixing frame (10), a water inlet pipe (7), a high-pressure tube (8) and a high-pressure nozzle (3), and is characterized in that: the lotus root digging machine is provided with left and right sealed floating barrels (1); a working bin (11) is arranged between the left and right sealed floating barrels (1); bottom, front-back and top filtering nets (2, 4 and 16) are welded outside the working bin (11) and between the left and right sealed floating barrels (1); and the chassis frame (14) is welded with the left and right sealed floating barrels (1), the working bin (11), the pump fixing frame (10), an operating frame (6) and a lifting lever (15) into a whole. The lotus root digging machine is novel in structure, light and flexible in complete machine, low in manufacturing cost, easy to operate, high in efficiency, low in fault rate, easy to maintain, convenient to transfer and wide in application.

The invention discloses a BIM-based digital twin smart machine room management method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining the operation data of a to-be-monitored object in real time, storing the operation data in an operation and maintenance database, and updating an integrated BIM model of a to-be-monitored scene; judging whether theto-be-monitored object is in a fault state or not according to the operation data: if the to-be-monitored object is in the fault state, displaying an alarm identifier for the to-be-monitored object inthe fault state on the integrated BIM model, and taking the to-be-monitored object corresponding to the alarm identifier as a to-be-processed object; displaying the alarm information corresponding tothe to-be-processed object, performing fault diagnosis on the to-be-processed object, generating a maintenance work order, and obtaining a fault diagnosis result and the maintenance work order; according to the fault diagnosis result, recommending a fault solution corresponding to the to-be-processed object by utilizing a preset neural network model. According to the invention, a user can maintain the data center efficiently, and the fault processing efficiency is improved.

The invention discloses a method and a device for repairing faults. The method comprises the following steps: a fault monitoring and diagnosing module receives the alarm information of the faults; the fault monitoring and diagnosing module inquires a preset diagnosis rule and starts the diagnosis process according to the alarm information, wherein the diagnosis rule is used for identifying the alarm information corresponding to the faults capable of being automatically repaired; the fault monitoring and diagnosing module collects fault diagnosis information corresponding to the alarm information according to the diagnosis rule and obtains a diagnosis result according to the fault diagnosis information and the diagnosis rule; and an automatic repairing module repairs the faults according to the diagnosis result and a preset repairing rule, wherein the repairing rule is used for stipulating the repairing operation. The technical scheme can automatically monitor and alarm system faults, finds the system faults in time and automatically repairs the system faults so as to improve the automatic management and maintenance levels of the mobile communication system and effectively decrease the maintenance cost.

The invention relates to a centralization remote power feeding system including a primary device machine room arranged with wireless primary devices and power supply primary devices, which include an inverter and a transmission primary device for converting the external electricity 380 V industrial electricity into the -48 to 24 V DC to access to the wireless primary devices to cause the wireless primary devices operate normally; the -48 to 24 V DC is converted to the 220-380V AC through the inverter of the power supply primary devices, then the power is transmitted to the farend unit of the farend covering system of the base station part newly built through the common rod transmission mode of the power transmission line and the optical fiber transmission line, providing the stable power to the farend unit, thereby completing the construction of the whole base station. The invention reduces the building size of the base station, saves the project invest and advances the net operation safety reliability, which is applied in the signal covering of the road, the subway , the tunnel of the city and the small countryside base station.

The invention relates to a method for monitoring a brake system for motor vehicles, which can be actuated both by a vehicle driver and independently of the vehicle driver in what is known as a ''brake-by-wire'' mode, comprising a hydraulic actuation device (2) which can be actuated by means of a brake pedal (34) and has a main brake cylinder, to which wheel brakes (6) are connected, in particular in at least two brake circuits (12, 13), a simulation device (40), which comprises at least one elastic element (30) and gives the vehicle driver a comfortable pedal feeling, an electrically controllable pressure-providing device (3), which is formed by a cylinder/piston assembly, the piston (46) of which can be actuated by an electromagnetic actuator (47), wherein a first measurement variable (PDBE) characterising the pressure of the pressure-providing device (3) is detected, and an electronic control unit (5), wherein a second measurement variable (SDBE) characterising a position of the piston (46) is detected, and wherein the detected measurement values of the first and second measurement variables (SDBE, PDBE) are compared (30) to a predetermined characteristic map (31) of the first and second measurement variables in order to monitor a functional status of the brake system.

This invention relates to rigidity and charging extension plane frame supportive structure, which solves the current solar sailboard and plane antenna plane frame supportive structure mechanic extension and complex existence structure and bad reliability and low efficiency of folding. The frame rack is loaded with frame rack longitude baseboard, wherein, the baseboard and frame rack is connected through band; the baseboard upper end has sticking layer; the wire left end is fixed on frame rack supportive tube and is connected to supportive tube with electricity layer; the charging channel left end is fixed inside supportive tube with control valve.

The invention discloses an M2M (Machine-to-Machine) terminal, and a system and method for M2M terminal remote management. The M2M terminal comprises the following modules: a CDMA (Code Division Multiple Access) network access module for realizing the physical access of a CDMA network via a radio frequency circuit and a base band circuit; a communication function module for realizing switching of voice and data based on the CDMA network; a communication management module for providing an access interface with a communication function for the service logic of the M2M terminal to realize access control and link management; a data processing module for carrying out analysis and logical operation on the acquired peripheral data and outputting a control instruction; a service management module for coordinating with the communication management module and the data processing module to realize the service logic function of the M2M terminal; and a terminal management module for realizing local and remote management on the M2M terminal based on an application layer interface protocol. Through the invention, the remote centralized management on the M2M terminal can be realized, and the requirements of real-time monitoring and timely trouble removal for the M2M terminal are satisfied; and operations and marketing development of the M2M application system are benefited.

The invention discloses a dynamic monitoring system for an operating condition of a thrust bearing of a hydro-generator. The system comprises a temperature sensor, a pressure sensor, an oil film thickness sensor, a host machine and a remote computer, wherein the sensor is arranged on a mirror plate of the thrust bearing for outputting lubricating parameter data such as oil film thickness, oil film pressure, oil film temperature and the like with the rotation of the mirror plate; and the data can be used for reflecting the operating condition of the thrust bearing. Data is exchanged between the remote computer and the system host machine by using wi-fi wireless communication; the host machine is used for carrying out high-speed acquisition under the control of programs; the acquired data is uploaded to the computer by the wi-fi network for displaying, storing and analyzing in the remote computer; if the thickness of the oil film of a thrust pad is excessively small or the temperature increase is excessively quick, alarm prompting is carried out to avoid a pad burning accident, thereby ensuring the safe operation of the thrust bearing of the hydro-generator. The data can be used for optimizing the design of the thrust bearing of the hydro-generator, and can be used as the original data of the expert thrust bearing analysis system.

The invention discloses a distributed generation-based grid connection transition operation mode coordination comprehensive protection method. When the DG capacity is continuously increased, the short-circuit current level is improved, the DG is changed from a "pure load" into a "small power supply", and a problem that conventional protection and switching breakpoints cannot meet the transition condition is solved. Based on the conventional protection and the switching breakpoints, the scheme provided by the invention performs continuous matching with a primary operation model and is continuously optimized, and the information and the state quantity are continuously exchanged to form a protection control interface adapted to a primary system, so that dual purposes of safe operation of a system and continuous power supplying are achieved. The fault isolation range is determined by collecting a new boundary which is determined by the switching breakpoints, and that whether the system sectionalizing and the island operation mode generated as a boundary point is determined is stable or not is comprehensively considered.

A stratosphere airship control and distribution method based on vector field guidance and a least square method comprises the following steps of 1, establishing a dynamic model of an stratosphere airship; 2, establishing a state equation of relationship between a virtual control variable and an actuating mechanism; 3, designing an upper-layer controller, and obtaining the virtual control variable tau by means of a sliding mode controller and a forward speed controller; 4, establishing an equation relationship between the virtual control variable and an actual control variable according to layout of the actuating mechanism, and obtaining an approximate weighted least square formula on condition that physical restriction of the actuating mechanism is considered; 5, simplifying the weighted least square formula to a piecewise function related with actual control amount by means of a lagrangean function and a saddle point theorem; and 6, solving the piecewise function by means of a recurrent neural network for obtaining the actual control variable. The control process of the stratosphere airship control and distribution method is shown in an attached picture.

The invention discloses a fault detection system, a fault detection method and a module. The fault detection system comprises a detection device, a control device and an alarm device. The detection device comprises a first temperature sensor and a second temperature sensor which are arranged at the inlet and the outlet of a temperature regulating apparatus. The control device is connected with the first temperature sensor and the second temperature sensor, and used for sending a first alarm driving signal when the temperature difference between the inlet and the outlet of the temperature regulating apparatus is lower than the minimum value of a predetermined normal temperature drop, or sending a second alarm driving signal when the temperature of the inlet of the temperature regulating apparatus is higher than the maximum value of a predetermined inlet temperature; and the alarm device is connected with the control device, and used for giving an alarm on a fault under the action of the first alarm driving signal or the second alarm driving signal. The fault detection system well solves the fault problems caused by blockage of engineering machines such as an air-conditioning condenser and an air-conditioning evaporator, an oil radiator and a water radiator.

The invention discloses a fully-automatic round-head barrel hook forming machine belonging to the field of wire bending machines. The fully-automatic round-head barrel hook forming machine comprises a steel wire feeding device, a handle tube feeding device, a forming device, a fetching and shaping device and a control system, wherein the handle tube feeding device is arranged in front of the forming device; the steel wire feeding device is arranged at the rear of the forming device; the fetching and shaping device is arranged in front of the forming device, is located below the handle tube feeding device and is composed of a grabbing mechanism, a locating mechanism and a shaping mechanism; and all the steel wire feeding device, the handle tube feeding device, the forming device and the fetching and shaping device are automatically controlled by the control system to sequentially finish the actions of handle tube feeding, steel wire feeding, barrel hook forming as well as fetching and shaping. By using the fully-automatic round-head barrel hook forming machine, a barrel hook not only can be fully-automatically produced, but also can be corrected and shaped after being formed to make preparation for the next installation of the barrel hook, so that the requirement of an automatic installation production line of the barrel hook is met, and the automatic level and production efficiency of vessels such as barrels and tanks are greatly increased.

The invention provides a switch log record module, and aims at providing a log record module which does not occupy the bandwidth of a switch, reduces the configuration cost, and has high security. The technical scheme of the module is realized in the following steps: log information output by a switch master device and a switch slave device is transmitted to a micro-control unit (MCU) through two serial ports, and the MCU receives the information and writes and saves data into an embedded multimedia memory eMMC; the log record module is provided with a UART serial port data overtime detection sub-module used for detecting whether the sending of the data is accomplished and a command transmission sub-module, a log record sub-module receives the data, the data enters a log record process, the log record process is generated by a master process sub-module, and the process sub-module is controlled by a remote switch; and an initialization module establishes Ethernet communication with a physical layer Ethernet PHY chip at an external signal interface by employing network configuration of stored IP address parameters, establishes log folders and files in an initialized manner, and separately saves UART serial port data of the switch master device and UART serial port data of the slave device.

The invention relates to a method for improving the maintenance and performance of an ignition system. The method mainly comprises eight small units, namely the composition of a trigger, the working principle of an igniter, the use of an ignition timing lamp, the influence of ignition time on an engine, the influence of ignition energy on the engine, the difference between air distribution timing and ignition timing, improvement on the ignition system and quick judgment of a fault of the ignition system. The method has the advantages of quickly clearing the fault of the ignition system of a motorcycle and improving an ignition angle.

The invention discloses an automatic card sender, comprising a base, and a waiting area, an exit area, a first guide rail and a second guide rail which are arranged on the base, wherein the first guide rail and the second guide rail are parallel to each other. The characteristics of the automatic card sender are as follows: the waiting area and the exit area are respectively arranged at two ends of the first guide rail and the second guide rail; two sides of a card to be sent are respectively accommodated in the first guide rail and the second guide rail; the first guide rail can be separatedfrom the waiting area and the exit area; a vertical pushing unit is connected with the base and is provided with a box chamber for containing the card and a vertical driver; a horizontal pushing unit is connected with the base and pushes the card to the exit area along the second guide rail to be contacted with a card press wheel; and a recovery unit is connected with the base and is arranged under the first guide rail.

The invention discloses an elevator brake control device and method. The elevator brake control device comprises: a safety band-type brake power supply circuit, a band-type brake control circuit and an elevator host; one end of the band-type brake control circuit is connected with the power output end of the safety band-type brake power supply circuit, and the other end of the band-type brake control circuit is connected with a brake of the elevator host; the safety band-type brake power supply circuit is used for outputting a power supply signal to the band-type brake control circuit according to a power supply enable signal so as to supply power for the band-type brake control circuit; the band-type brake control circuit is used for generating current according to a band-type brake control enable signal and the power supply signal output by the safety band-type brake power supply circuit, so that the brake is in a release state, and a corresponding control fault signal can be fed back to an elevator main control system when a short-circuit fault is detected, so as to trigger the output of a turn-off enable signal of the elevator main control system so that the brake is in a release state. According to the elevator brake control device, the problem can be solved that the on-off control of the existing motor and brake loop depends on the contactor in the elevator, thereby improving the flexibility of the brake control of the elevator.

The application provides a household appliance fault processing method and device. The method comprises the following steps: acquiring running information of household appliance through a household appliance server, and controlling the household appliance to perform fault detection when determining that the household appliance is existent according to the running information, thereby determining the fault type; querying each repairing record for recording fault information according to the fault type so as to obtain a target record matched with the fault; and generating a repairing work orderaccording to the target record. After determining the fault type of the household appliance, the target record matched with the fault is queried so as to generate the repairing work order, and the repairing personnel can accurately position to the household appliance fault according to the repairing work order, thereby ensuring that the fault problem of the household appliance can be solved through once on-site repairing; and the problems that the repairing personnel cannot accurately position to the fault problem since the feedback fault information is error when a user fills in the repairingwork order in the prior art, the prepared accessory or the repairing tool is unmatched, and the secondary in-site repairing is caused are solved.

The invention provides a method for the early failure detection of a motor using current characteristic enhancement transformation, which comprises (1) real-time collecting three-phase current of an induction machine ia, ib, and ic, and calculating a transformation matrix K based on a current power frequency fe; (2) demodulating via the following formula to obtain a torque current iq and a magnetizing current id, wherein iqd0 is equal to Kiabc; (3) performing fast Fourier transformation of torque current iq and the magnetizing current to obtain a subtle current characteristic spectrum; and (4) comparing with the failure characteristic frequency of the induction machine, and determining the failure types of the induction machine. The method has the advantages of simple principle, simple operation, and high measuring accuracy, and can extract failure characteristic component in severe power frequency background using the current characteristic enhancement transformation to detect the early failure of the induction machine.

The invention discloses a civil aircraft complex system fault diagnosis method based on a Bayesian network, relates to the field of civil aircraft complex system fault diagnosis, can effectively utilize data collected in the flight process of an aircraft and experience of an engineer to quickly and accurately remove faults, and guarantees arrangement of a normal flight plan of an airline. According to the invention, the problem that civil aircraft complex system route fault diagnosis and isolation consume time and labor is solved; the data acquired by the data recorder only needs to be analyzed after navigation; and then the mapping relation table of each node of the fault and fault presentation layer is input, the network can give out a corresponding diagnosis result, the method is more convenient and quicker than looking up a manual, the diagnosis result obtained through the change of actual data is more scientific, the maintenance cost can be saved for airlines, and the utilizationrate of airplanes is improved.

The invention discloses a multifunctional street lamp capable of starting and monitoring a flight state of an unmanned aerial vehicle and a control method. An overlook camera is fixedly mounted at theposition, located on the lower part of a street lamp body, of a street lamp pole, and an unmanned aerial vehicle parking platform is fixedly mounted at the middle position, away from the side on which the street lamp body is installed, of the street lamp pole. An unmanned aerial vehicle parking place is installed on the upper surface of the unmanned aerial vehicle parking platform, and a wind power and wind speed and wind direction sensor is fixedly mounted on the upper surface, away from the end connected with the street lamp pole, of the unmanned aerial vehicle parking platform. A telephotoprobe is fixedly installed at the middle position of the other side of the street lamp pole. The multifunctional street lamp is reasonable in structure, helps the unmanned aerial vehicle to be used as a city tour-inspection and patrol mode to avoid problems in areas such as an area with storms or obstacles, and can enable the remote-server-controlled unmanned aerial vehicle to realize the controlover the starting, flying according to a specified route and altitude and regulation of landing of the lamp pole and realize the real-time monitoring and controlling according to multiplicity sensorslocally loaded on the lamp pole of the multifunctional street lamp and third-party sensor data.