31results about How to "Avoid system failure" patented technology

The invention relates to the technical field of artificial intelligence, and particularly discloses an abnormity detection method and device, computer equipment and a storage medium. The method comprises the following steps: if a to-be-detected index is a periodic significant index, obtaining historical prediction data corresponding to a plurality of time points before a preset time point of the to-be-detected index; inputting the plurality of historical prediction data into a prediction model to obtain a dynamic prediction result corresponding to a preset time point; obtaining a monitoring result corresponding to a preset time point, and calculating a residual error between the dynamic prediction result and the monitoring result; if the residual error exceeds a preset range, recording a monitoring result into an abnormal log, and detecting whether an abnormal event exists or not based on the abnormal log; and if the abnormal event exists, sending an abnormal event alarm to the operation and maintenance terminal. According to the method, based on the prediction result of the periodic significant index and the actual monitoring result, abnormity can be found in the hidden danger stage and manual troubleshooting is notified so as to avoid real system faults caused by subsequent fault hidden dangers.

The embodiment of the invention provides a control method of a heat pump type air conditioner, and the heat pump type air conditioner. The control method comprises the steps that the runnable frequency range of an air conditioner compressor is determined according to the outdoor ambient temperature, the running frequency of the compressor is controlled to be within the runnable frequency range, system failure caused by the excessively high or excessively low frequency of the compressor is avoided, the current indoor temperature is checked, whether the temperature reaches the preset target indoor temperature or not is judged, and if yes, the temperature of an internal tube is adjusted. When the temperature meets the demands, the vertical temperature difference is decreased by adjusting thetemperature of the internal tube of the air conditioner, and comfortableness is improved.

A method of controlling a hybrid construction machine capable of preventing a system from being rendered inoperative without increasing a capacitance of a capacitor and of inhibiting delay of a swing operation relative to an operation command at the time of swing operation, and the hybrid construction machine are provided. For this purpose, at the time of discharge of the capacitor, actual torque command values are respectively generated by referring to an assist torque limit value corresponding to capacitor voltage of a generator motor and a swing power running torque limit value corresponding to the capacitor voltage of a swing motor, as well as, at the time of charge of the capacitor, an actual target output value of the generator motor is generated.

The invention discloses a network file management realization method and system. The realization method comprises the steps of S1, establishing input and output message queues and starting a resource management process; and S2, storing file download requests sent by an external process in the input message queue, wherein according to the resource management process, the file download requests are extracted from the input message queue one by one, one of multiple connected file servers is selected for downloading request files, and file download results are stored in the output message queue. The method and the system belong to the technical field of network communication. Concurrent download of massive service files can be realized.

The embodiment of the invention relates to the technical field of communication, in particular to a hot patching method and equipment, which is used for reducing the probability of system interrupt and system fault caused in hot patching when the distance between a patching function and a patching function is too long. In the embodiment, a jumping function information table is obtained, at least one jumping function at unused state is determined from the jumping function information table, and a jumping channel is produced; a first short jumping function is added in front of the patched function, wherein the first short jumping function is used for a first jumping function jumping from the patched function to the jumping channel and further jumping from the jumping channel to the patching function, so that the problems of program interruption and system fault when the patched function is repositioned to the patching function through long jumping in the prior art are avoided.

A laser diode driving method that reliably maintains average optical power and extinction ratio is disclosed. The present invention for laser driving uses a preloaded laser diode characteristic curve / table and / or mathematical equations to create a programmable bias and modulation current range. This ensures stable closed-loop operation and prevents system failure if the feedback signal is impaired by confining the operation of the laser diode to a normal operating range.

The invention discloses a robustness anomaly detection method based on local and global statistical analysis. According to the method, modeling is carried out on the basis of local information and global information, then an comprehensive index is judged, and if the index exceeds a preset judgment condition, it is determined that an anomaly happens once. According to the method, an anomaly detection model in current industrial application is improved, a local model and a global model are combined, and the comprehensive index is comprehensively considered for early warning so that possible system faults can be avoided, and the effect of predictive maintenance is achieved.

The invention provides a photovoltaic rapid turn-off system and a control method thereof. An inverter enters a period in each turn-off state of a turn-off device in the system when the system is in a limited power operation state, and electric signal disturbance is applied to a DC bus of the system at least once; each turn-off device can detect the input parameter and / or the output parameter of the turn-off device so as to judge whether the electric signal disturbance of the direct current bus connected with the turn-off device meets a preset condition or not; and if the judgment result is yes, the turn-off device enters or maintains an on state. Namely, according to the control method of the photovoltaic rapid turn-off system provided by the invention, the inverter intermittently applies the electric signal disturbance to the DC bus so that the turn-off device can be ensured to maintain the on state, and the loss of the power generation capacity of the system caused by mistaken turn-off of the turn-off device is avoided; and when the photovoltaic rapid turn-off system is in a limited power operation state, the inverter can be prevented from continuously applying electric signal disturbance, and the output power is ensured not to exceed a power limit value.

The invention discloses a mechanical type forced levelling device. According to the mechanical type forced levelling device, under the condition that normal working of a lifting carrier is not affected, the up-down position of the carrier is locked, and system fault caused by positioning offset of the lifting carrier is avoided. The mechanical type forced levelling device comprises forced levelling mechanisms arranged on a lifting carrying frame of the lifting carrier and a plurality of levelling seat assemblies arranged on a fixed steel framework of a parking garage. The forced levelling mechanisms comprise levelling shaft sets and rotating driving executing mechanisms. Each levelling shaft set comprises a vertical mandrel arranged on the lifting carrying frame, a rotating shaft sleeve rotatably arranged on the vertical mandrel and a radial force-bearing shaft which is arranged on the rotating shaft sleeve and radially extends along the vertical mandrel. The rotating driving executingmechanisms are used for driving the radial force-bearing shafts to rotate around the vertical mandrels. Each levelling seat assembly comprises at least one levelling seat provided with a limiting groove matched with a supporting bearing.

The invention discloses a system and a method for automatically backing up a modification file in a K-UX operation system, and relates to a file management technology. The system for automatically backing up the modification file mainly comprises an auditing monitoring module, a confirmation module and a backup module. Through the method for automatically backing up the modification file, a specified file can be audited, modification content interactive confirmation is performed in a file modifying process, and finally a file before modification is automatically backed up. According to the method and the system, system faults caused by false modification of configuration can be effectively avoided and a manual misoperation probability can be reduced.

The invention discloses a nuclear magnetic resonance coil positioning method based on passive RFID. In the invention, signal emitting sources are respectively arranged at the corners of the operationtable. A passive RFID electronic tag is mounted on the nuclear magnetic resonance coil. When the passive RFID electronic tag T enters the functional range of the reader / writer, the passive RFID electronic tag T feeds back the radio frequency signal sent by the reader / writer; and when the passive RFID electronic tag T enters the functional range of the reader / writer, the passive RFID electronic tagT feeds back the radio frequency signal sent by the reader / writer. The relationship between the intensity of signal attenuation and the propagation distance is calculated. A coordinate system is established with the signal emitter point A as the origin. The spatial coordinates of the passive RFID tag are calculated according to the triangulation algorithm. The invention locates the nuclear magnetic resonance coil through the passive RFID and ensures that the coil is connected with the nuclear magnetic resonance system in the resonance process of the nuclear magnetic resonance imaging. Avoid system failure due to the operator's negligence that the coil is not plugged into the system and prevent injury to the patient. Through the calculation of the propagation model and the application of triangular positioning algorithm, the positioning accuracy of passive RFID is improved.

The invention discloses a double-star redundant topology architecture system and method. The system comprises a calculation module unit, a switch module unit, and a back insertion module unit, whereinthe switch module unit comprises a master switch module unit and a slave switch module unit that are separately and mutually connected with the calculation module unit, the back insertion module unitcomprises two switch back insertion module units that are respectively connected with the master switch module unit and the slave switch module unit, the master switch module unit is configured for data distribution and system state management, the slave switch module unit is configured for acquiring a fault state of the master switch module unit and actively taking over a function of the masterswitch module unit in response to receiving of an instruction that the master switch module unit fails. The system and method effectively prevent overall system function failure and data loss caused by failure of a node device in a single node start topology, and guarantees highly reliable data transmission.

A self-cleaning oil recharging lockup valve of a combination type hydraulic cylinder is characterized by comprising a valve body with an oil inlet V1, an oil outlet C1, an oil inlet V2 and an oil outlet C2, and a first check valve component, a second check valve component, a first hydraulic control check valve and a second hydraulic control check valve which are arranged in the valve body; and the oil inlet V1 of the valve body is communicated with an axial port in a valve body of the first check valve component and an oil passage in the valve body, the working oil outlet C1 in the valve body is communicated with a radial oil port in the valve body of the first check valve component and an axial oil port in the valve body of the first hydraulic control check valve, the oil inlet V2 of the valve body is communicated with the axial port in the valve body of the second check valve component and the oil passage in the valve body, the working oil outlet C2 in the valve body is communicated with the radial oil port in the valve body of the first check valve component and the radial oil port in the valve body of the first hydraulic control check valve, the oil passage in the valve body is communicated with a hydraulic port of the second hydraulic control check valve, the oil passage in the valve body is communicated with the hydraulic port of the first hydraulic control check valve, and an oil return port T in the valve body is communicated with the radial oil port in the valve body of the first hydraulic control check valve and the radial oil port in the valve body of the second hydraulic control check valve.

The invention belongs to a tail walking beam ground control device which comprises a micro controller, wherein an I2C bus interface of the micro controller is electrically connected with an EEPROM memory; an SPI bus interface of the micro controller is electrically connected with a special three-phase electric energy metering module; I / O ports of the micro controller are respectively and electrically connected with a switching quantity input unit and a switching quantity output unit; two USART serial bus interfaces of the micro controller are respectively and electrically connected with a WIFItransmission module and a ZigBee communication module; and the other two USART serial bus interfaces of the micro controller are respectively and electrically connected with an RS485 bus level conversion module. Two communication modes are provided for connecting a tail walking beam balance block control device so as to form a complete balance degree regulating system. By providing a wireless connection mode, the system fault caused by cable fracture due to reciprocating movement of a sucker rod can be effectively avoided; meanwhile, potential safety accidents caused by electric leakage is avoided; and potential safety hazards are reduced.

For a circuit breaker system (3) comprising a first circuit breaker (1) and a second circuit breaker (2), the first circuit breaker (1) has a first tripping unit, a first control unit, which controls the first tripping unit, and a first electrical sensor, the second circuit breaker (2) has a second tripping unit, a second control unit, and a second electrical sensor, which controls the second tripping unit. The first control unit controls the first tripping unit, the second control unit controls the second tripping unit, the circuit breaker system (3) further comprises a device for communication of the first control unit and the second control unit, it is suggested that the first control unit monitors whether an internal component fault exists in the second circuit breaker (2) through the device for communication, and the second control unit controls the second tripping unit. Wherein the first control unit is adapted to change its standard trip characteristic to an emergency trip characteristic when an internal device failure of the second circuit breaker (2) is detected.

A system for indicating the presence of a substance in an article, wherein the article comprises at least one component, comprises: means for selecting a substance; a component data unit for providing component data wherein the component data comprises at least one material comprised in each component; a primary material records unit for providing a plurality of primary material records; a secondary material records unit for providing a plurality of secondary material records; a substance record unit for providing a plurality of substance records associated with a material, wherein each substance record contains percentages of substances contained in the associated material; and a processor configured to: select material records of the at least one material from the primary material records unit if the at least one material is present in the primary material records; select material records corresponding to the at least one material from the secondary material records unit if no substance records associated with the at least one material are present in the substance record unit; calculate the total amount of the selected substance present in the article based on the component data, selected material records, and substance records, and provide an indication of the total amount of the selected substance.

The invention discloses an overload automatic resetting valve of a hydraulic motor. The overload automatic resetting valve comprises a valve body, wherein the valve body is internally provided with a left screw plug, a variable control valve element, a spring, a spring seat and a right screw plug in sequence; an oil hole is formed in the left screw plug; the variable control valve element is internally provided with an automatic resetting valve element; the left end of the automatic resetting valve element stretches into the variable control valve element; a resetting oil cavity is formed between the left end face of the automatic resetting valve element and the variable control valve element; and the resetting oil cavity is communicated with a working oil path. The overload automatic resetting valve of the hydraulic motor has the beneficial effects that the change from a high speed to a low speed is finished under an overload condition, so that large-torque power output is realized; and caterpillar band driving equipment is automatically changed to work at a low-speed and large-torque state, and phenomena that system faults are caused by the overload and the system is damaged are avoided.

The invention provides a control system for an automatic chemical silicon chip corroding machine, which comprises a manipulator and is characterized by further comprising a servomotor, a servomotor driver, a servo drive module and an PLC (Programmable Logic Controller ), the PLC is connected with the servo drive module, the servo drive module is further connected with the servomotor driver, the servomotor driver is connected with the servomotor, and the servomotor is connected with the manipulator. The control system provided by the invention has the benefit of accuracy in positioning, improves the quality of products processed by the chemical corroding machine, and increases the qualification rate.

The present invention relates to a message synchronizing method. It contains MC transmitting synchronizing notification to UM server; MC collecting user UM message; UM server collecting user UM message and sending to MC; MC comparing both stored user UM message information difference; according to comparison result to judge whether existing user UM message only in UM server, if it is then executing the next step, otherwise MC deleting self stored user UM message; MC transmitting obtaining notification to UM server; UM server transmitting self existent user UM message list to MC; ending. The present invention solves Disconnection or MC fault resulted problem between MC and UM server.

A high-reliability phase-locked loop module comprises a phase-locked loop unit, a phase-locked loop monitoring unit and a clock switching unit, the phase-locked loop unit is connected to the phase-locked loop monitoring unit, and the output of the phase-locked loop monitoring unit and the output of the phase-locked loop unit are respectively connected to the clock switching unit. The phase-lockedloop monitoring unit is used for monitoring the working state or parameters of the phase-locked loop unit, and the clock switching unit is used for switching the output clock of the phase-locked loopmodule according to the monitoring result of the phase-locked loop monitoring unit. According to the technical scheme, automatic switching of the output clock of the phase-locked loop can be achieved,power consumption is reduced, cost is saved, the problems of system faults, breakdown and the like caused by phase-locked loop unlocking and jittering of the input reference clock of the phase-lockedloop can be avoided, and the stability and reliability of the system are greatly improved.

The invention discloses a service deactivation method and a device thereof. The method comprises the following steps: after receiving the deactivation command for requesting the specified deactivation service, determining the service deactivation rate value of the specified service and carrying out interrupt handling respectively on online calling of the specified service according to the determined service deactivation rate value which is the number of interrupted online calling in unit time. During service upgrading, the invention can effectively avoid the system failure caused by sharp increase of system load in the deactivation process, thus greatly increasing the success rate of service upgrading and reducing the influences of service upgrading on the system stability and safety.

The invention discloses a sliding door travel control system. A sliding door is slidingly mounted; the system comprises a linear transmission mechanism, a motor, a magnet, a hall sensor and an electric control loop; the motor drives the sliding door to move through the linear transmission mechanism, and drives the magnet to rotate; the hall sensor is used for inducing the magnetic field change ofthe magnet; and a magnet induction signal output end of the hall sensor and the motor are electrically connected with the electric control loop. The sliding door travel control system is high in reliability and long in service life.