231results about How to "Avoid shutdown" patented technology

A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lines. Each RAM cyclically converts analog signal values to digital, forming data packets. Interrogation commands emanating from the CRU and relayed with strategic delays by intervening LTUs and RAMs are received by the RAM. Each command causes the RAM to transmit a data packet. Strategic delays are set such that the transmission capacity of the line is best utilized. Power and frequency of transmission are selectable by the CRU to optimize performance. Cables contain multiple communication pairs. The network path between the RAM and the CRU is established from the CRU and altered in event of malfunction. All types of network elements are interconnectable. Recorded samples are synchronous.

The invention discloses a bridge arm bypass protection circuit of a modularization multi-level converter aiming at a direct current short circuit fault, and belongs to a converter fault protection device range. The protection circuit is realized by arranging a bridge arm bypass, which is formed by serially connecting a bypass thyristor and a bypass resistor together, between the upper bridge arm and the lower bridge arm of every phase of the modularization multi-level converter. During common function, the bypass thyristor is in an off state, and the bridge arm bypass does not work. After the fault occurs, a sub-module IGBT is locked, and at the same time, the bypass thyristor is conducted, and because of the shunting function of the bridge arm bypass, fault current flowing through sub-module devices is reduced, and attenuation of direct current side current is also accelerated after trip-out of an alternating circuit breaker, and therefore fault recovery time is reduced, and a good fault protection function is provided for the devices and the alternating current system. For a system adopting the direct current circuit breaker, the protection circuit is used to reduce the fault current of the direct current side, and therefore a requirement on the switching-on / off of the current of the direct current circuit breaker is reduced, and economic performance and reliability are improved.

A riding sectionally charging method based on a mobile phone is characterized by comprising the steps of obtaining geographic position coordinates of a vehicle at any moment through a vehicle-mounted global position system (GPS) locating device; obtaining a card number of a mobile phone card provided with a radio frequency identification device (RFID) label and storing the card number into the RFID label; reading the card number, stored inside the RFID label, of the mobile phone card by an RFID reader; obtaining a geographic position coordinate of the vehicle at the moment when the RFID reader reads the card number of the mobile phone card; sending heartbeat requests to the mobile phone regularly by a miniature simulation base station which is located on the vehicle and with signals covering a whole vehicle box; obtaining a geographic position coordinate of the vehicle at the moment when the mobile phone is off-line with the miniature simulation base station; calculating the distance by which the vehicle runs during the whole process from the time when the RFID reader reads the card number of the mobile phone card to the time when the mobile phone is off-line with the miniature simulation base station; sending the card number of the mobile phone card and the distance by which the vehicle runs to a remote server by a vehicle-mounted remote communication device; and calculating the fee produced by riding of a user and charging the fee from an account of the mobile phone card by the remote server.

A device for confirming the presence of thread in nuts and other threaded parts has a threaded gage mounted on a holder which is connected through a clutch to a motor. The motor drives the holder to rotate the threaded gage to engage the threaded part. Switches are provided to stop and reverse the motor. The device identifies parts without threads and also damaged and incomplete threads. The device does not impart undue force levels to unthreaded, undersized parts or defective parts. The device confirms threads in threaded blind bores.

A method for monitoring distributed software, as well as a computer program and a computer program product. In the method, the software, distributed to a number of computer units, is executed. One of the computer units is assigned a master module and the other computer units are assigned a slave module each. Monitoring is performed via communication in master-slave operation between the master module and the slave modules.

The invention discloses an adaptive synchronous rectification control system and a control method of an active clamp flyback converter. The control system includes sampling and signal processing circuits, control circuits based on microcontroller and gate driver. The control method can realize the on-state of the secondary synchronous rectifier of the active clamp flyback converter, turn off too early, turn off too late, and directly detect the off-state, and can control the accurate on-state of the synchronous rectifier and the on-time of the synchronous rectifier in the next cycle accordingto the detection result. After several cycles of adaptive control, the synchronous rectifier enters the just-off state, avoids the output waveform oscillation of the active clamp flyback converter, reduces the loss and improves the efficiency. According to different state detection time periods, the comparator inside the microcontroller is multiplexed by time-sharing, which saves hardware resources, reduces circuit cost and debugging difficulty.

A mobile terminal anti-theft system comprises a judging module used for judging whether a user executes a shutdown operation on a mobile terminal or not, a receiving module used for displaying a receiving window to receive a password entered by the user when determining that the user is going to execute a shutdown operation on the mobile terminal, and an executing module used for causing a loudspeaker of the mobile terminal to play a warning tone when the user enters a wrong password and the number of times the user enters a wrong password exceeds the limit. The invention further provides a mobile terminal anti-theft method. The mobile terminal anti-theft system and the mobile terminal anti-theft method of the invention can be used for preventing a mobile terminal from being stolen.

A load drive controller for controlling a heat generating member by a switching element includes a temperature detection portion for detecting a physical quantity of a level corresponding to a temperature of the switching element, a protection function portion for outputting an abnormality signal corresponding to an overheated state of the switching element when the physical quantity detected by the temperature detection portion is larger than a value, a control portion for causing the heat generating member to generate heat by driving the switching element via a driving portion. Furthermore, the control portion causes a temperature adjustment portion to increase the temperature of the heat generating member when the abnormality signal is input from the protection function portion.

This invention discloses a suppression method for realizing fault lower stream alarm of fiber line, a quick resume method based on said method and an optical amplifier for realizing the alarm suppression and an optical communication system including: adjacent station points at both sides of the fault point keep the optical signal output to its own lower stream station points after testing fault of fiber circuit and load ID signals carrying the alarm suppression information, after the lower stream station points receive the ID signals, they maintain the normal working state, after the fault is tested and modified, the adjacent station points stop loading said ID signals to the lower points and resumes the normal working state and the lower stream station points continue the normal working state.

The invention discloses an LLC resonant converter, a controlling circuit of the LLC resonant converter, and a driving method of the LLC resonant converter. The bridge-type LLC resonant converter comprises a bridge-type circuit, a resonant network, a transformer, a synchronous rectifying circuit and the controlling circuit. The synchronous rectifying circuit at least comprises a first synchronous rectifying pipe and a second synchronous rectifying pipe. The controlling circuit comprises a first comparison circuit, a second comparison circuit, a blanking circuit, a first logic circuit and a second logic circuit. A first blanking signal and a second blanking signal are provided through the blanking circuit, and multiple times of conduction and turning-off of the first synchronous rectifying pipe and the second rectifying pipe in one cycle are avoided.

An electrical apparatus including an AC adapter 51; a battery 52 that repeats charging and discharging to power the apparatus; an AC / DC enable circuit 61 that switches between stop and start of power source from the AC adapter 51 to the body; a charger utilization circuit 62 that charges an output capacitor (Cout) of a charger 60 while the power source from the AC adapter 51 stops; and a battery detection circuit 63 that detects disconnection of the battery 52. If the battery 52 is disconnected from the body and the battery detection circuit 63 detects the disconnection while the power source from the AC adapter 51 stops and the body is powered by the battery 52, the AC / DC enable circuit 61 starts power source to the body while the body is powered by the output capacitor (Cout).

An endoscopic gaseous material feed system comprises an endoscope 1 having a solid-state image sensor device 81 incorporated into a fore distal end portion of an elongated endoscopic insertion rod to be introduced into a body cavity of a patient or examinee, a gas feeder 3 loaded with a gas tank 60 which is packed with carbon dioxide gas to be sent to the body cavity, a light source 2 incorporating an air pump to supply air to the body cavity, a processor 4 for generating video signal data of an endoscopically captured picture image on the basis of electric signals from the solid-state image sensor 81, a detector 87 provided in the processor 4 and adapted to detect whether or not the endoscope is currently placed in a body cavity, from video signal data of the processor, and a feed gas source controller 85 provided in the processor and adapted to permit a supply of carbon dioxide gas or air when the detector 87 makes an affirmative judgment that the endoscope 1 is currently placed in a body cavity and to prohibit a supply of carbon dioxide gas when the detector 87 makes a negative judgment.

The invention provides a terminal device power supply system, method, chip and a terminal device, which relate to the charging field. The power supply system comprises a battery pack, a bypass circuit, a step-down circuit and a controller, wherein the battery pack includes at least two batteries; the output end of the battery pack is connected to the input end of the step-down circuit, and the output end of the step-down circuit is connected to the power consumption component of the terminal device; one end of the bypass circuit is connected to the input end of the step-down circuit, and the other end of the bypass circuit is connected to the output end of the step-down circuit; and the controller is used to control the step-down circuit to work and control the bypass circuit to stop working when the batteries in the battery pack need to be switched to a series mode and control the bypass circuit to work and control the step-down circuit to stop working when the batteries in the battery pack need to be switched to a parallel mode. By using the system, switching between the series mode and the parallel mode can be realized according to actual conditions, and while the stability of the terminal device is enhanced, the battery life can also be increased.

The invention provides a magnetic suspension molecular pump control method and a magnetic suspension molecular pump control system. System failure level is divided, and different operations are carried out on the system according to difference of the system failure level. For primary failure with lower level, for example a type that some of Hall sensors have failure, the system is kept to operate with failure, and continual observation about whether the failure is eliminated is carried out; and if the failure is eliminated within certain time, the normal operation of the system is restored. When the system has secondary failure, cannot continuously operate, but does not need to turn off, the system can be firstly kept to stop operation, and real-time detection about whether the system failure is eliminated or not is carried out. If the system failure is eliminated within certain time, the normal operation of the system can be continuously restored, and the system is controlled to turn off if the system failure exists all the time. Unnecessary system turn-off is avoided by virtue of a failure recovery state, so that damages to system hardware as well as influence on industrial production are avoided.

An inverter controls the power supplied to a load such as a CCFL connected to a secondary winding of a transformer by means of pulse width modulation (PWM) control of the switches of a semiconductor switching circuit connected to the primary winding of the transformer. The current and voltage supplied to the load are fed back to the inverter in the form of a current error signal and a voltage error signal, respectively, from which a feedback signal is formed in accordance with the magnitudes of these signals. Thus, when the DC supply voltage of a DC power supply sharply rises, the inverter changes the feedback signal directly, that is, without waiting for the changes to occur in the load current and load voltage, so as to reduce the power supplied to the load. Thus, over-current and resultant viewer's discomfort is suppressed. Sudden shut down of the inverter are also prevented from occurring.

The invention provides a fan control system, and further provides a fan control method and a server. The fan control system comprises a controller and a connector. A first end of the controller is connected with a fan control panel, and the other end of the controller is connected with a baseboard management controller (BMC) through the connector. The controller is used for controlling a fan to operate according to a preset rotating speed when the BMC stops sending fan adjusting signals to the fan control panel. The connector is used for realizing information communication between the controller and the BMC. By means of the fan control system, the number of interfaces which are used when the fan control panel and the BMC are connected can be reduced, so that the connector with the small size and the low cost can be selected, the complexity of circuit design is reduced, the fan can be continuously controlled to rotate when the BMC fails, the server is prevented from being turned off dueto overheating, and the stability of a server system is improved.

The invention discloses a golf cart navigation system based on an acceleration transducer, which comprises a host unit and a terminal control board, wherein the host unit and the terminal control board are connected by data interfaces, the terminal control board consists of a single chip microcomputer, the single chip microcomputer is respectively connected with a GPS (Global Positioning System) module and the acceleration transducer, a GPS correction module on the single chip microcomputer can receive signals from the acceleration transducer and the GPS module, and when the acceleration transducer provides a state that a golf cart stops, the GPS correction module discards positioning information from the GPS module. The golf cart navigation system based on the acceleration transducer, provided by the invention, effectively avoids static drifting of a GPS by the acceleration transducer, and realizes automatic power-on and power-off of a terminal by virtue of the acceleration transducer to determine whether the golf cart stops.

A visual indicator device and method for determining the presence of oily contaminants in a gaseous stream are provided. The device includes a filtration status chamber for receiving and discharging the gaseous stream, and a transparent wall enabling viewing of the chamber interior. A fluid-pervious filtration media within the chamber is infused with an absorption composition at which the contaminant on contact with the media is immobilized. The media has a surface viewable through a transparent wall of the filtration status chamber, and the stream flow path is such as to cause the stream to impinge at the media via the said surface, whereby the contaminants collect selectively at the media surface and are therefore highly visible through the transparent wall.

The invention relates to a mobile phone uninterruptible power supply system and a power supply method thereof. The mobile phone uninterruptible power supply system comprises a submachine battery and a mother block battery; a power supply switching circuit and a charging switching circuit are connected with the submachine battery and the mother block battery; the power supply is switched between the submachine battery and the mother block battery through the power supply switching circuit; and the charging is switched between the submachine battery and the mother block battery through the charging switching circuit. The mobile phone uninterruptible power supply system and the power supply method thereof can enable a user to automatically switch the batteries under the situation that the normal work of a mobile phone is not affected when the power of the battery is lower and can not be used or the battery has sudden power failure, thereby avoiding the phenomena of shutdown, disconnection, and the like under the situation that the battery voltage of the mobile phone is insufficient, realizing the uninterruptible power supply, and prolonging the working time of the mobile phone.

The invention provides a method and a device for controlling an induced draft temperature of a grate cooler of a cement afterheat generation system. The method comprises the step of controlling afterheat using air valve opening, the afterwind valve opening, a rotating speed of a first main transmission shaft and a rotating speed of a second main transmission shaft in the grate cooler by using a controller. The device comprises the grate cooler, a first drive mechanism and a second drive mechanism which are connected with the grate cooler, an afterheat using mechanism and an afterwind emission mechanism, wherein the grate cooler, the afterheat using mechanism and the afterwind emission mechanism are arranged on the grate cooler. The grate cooler is provided with at least two stock level detectors; the first drive mechanism, the second drive mechanism, the afterheat using mechanism, the afterwind emission mechanism and the stock level detectors detector are respectively connected with the controller; and the controller is provided with a signal input end, a signal analysis processing unit and a signal output end, which are sequentially connected. The control device can effectively reduce the fluctuation of the induced draft temperature of grate cooler afterheat, and the induced draft temperature is ensured to keep within a certain range, so that the induced draft temperature of the cement afterheat generating system is maintained at a higher level.

The instant disclosure relates to a lifting device for transporting a wafer carrier to an automatic handling system including a suspension rail and an automatic guiding vehicle configured to move along the suspension rail, comprising an elevating holder, a plurality of suspension modules, and a plurality of first drive modules. Specially, the elevating holder has a motion sensor configured to detect whether the elevating holder is in a horizontal state or a non-horizontal state. The first drive modules can be used to synchronously drive the suspension modules according the horizontal state detected by the motion sensor, and the first drive modules can also be used to individually drive each of the suspension modules according the non-horizontal state detected by the motion sensor to recover the elevating holder from the non-horizontal state as the horizontal state.

An information processing apparatus includes a processor configured to shift to an energy saving mode in which predetermined functions are inactivated. The processor includes a detection unit that detects a shutdown operation in the energy saving mode of the information processing apparatus, an operation reception unit that displays, when the shutdown operation is detected, a screen in which a user is prompted to determine whether performance of a shutdown process is to be continued, the operation reception unit receiving an operation through the screen, and a shutdown unit that performs the shutdown process when an operation to continue performance of the shutdown process is received through the screen.

A method of early sensing of water leakage, through chemical concentration monitoring, in a nuclear reactor system using a liquid metal and molten salt, the method including: measuring an electrical conductivity and a mass spectrum of a first channel and a second channel of a heat-related device included in the nuclear reactor system using the liquid metal and the molten salt; calculating a first identification value associated with the water leakage in the heat-related device using the measured electrical conductivity; calculating a second identification value associated with the water leakage in the heat-related device using the measured mass spectrum; and sensing the water leakage by comparing a predetermined reference value and a summed identification value, the summed identification value being the sum of the first identification value and the second identification value.

A control method for controlling an overspeed safety system (5) of an aircraft (1) having at least a first engine (10) and a second engine (20), during which method an engine is shut down when a monitoring parameter of that engine exceeds a first threshold, and another engine distinct from this engine is shut down when the monitoring parameter for said other engine exceeds a second threshold, said second threshold being greater than said first threshold.

A vehicle electrical power management module is capable of controlling electrical power supplying to an air conditioning load with respect to an overall amount of electrical power associated with a vehicle and an actual temperature value inside the vehicle. The vehicle electrical power management module comprises, an AC to DC conversion unit, a setup unit, a switching unit, and a micro-control unit. The AC to DC conversion unit transfers an AC input power to a DC input power. The setup unit outputs a standard temperature value with respect to a user setting. The switch unit is coupled to the DC to AC conversion unit. The micro-control unit receives the plurality of temperature signals from a number of temperature sensor units and controls the switch unit to supply power to a plurality of air conditioning loads in response to the plurality of temperature signals and the standard temperature value.

An electronic timepiece and control method of an electronic timepiece prevent system shutdowns due to a voltage drop, and increase opportunities to acquire time information. An electronic timepiece 1 has a reception module 50 that receives satellite signals; a storage battery 24 that supplies drive power; a voltage detection circuit 74 that detects the voltage of the storage battery 24; a temperature detector 67 that detects temperature; a reception command unit that instructs receiving satellite signals; and a reception controller that executes a reception process to receive satellite signals in response to a command from the reception command unit. The reception controller executes the reception process when the detected battery voltage is greater than or equal to a threshold set for the detected temperature, and does not execute the reception process when the reserve power is less than the threshold.

The invention relates to the technical field of start-up technology of bandgap reference circuit, in particular to a start-up circuit, a core circuit, a consumable chip, consumables, the start methodof the bandgap reference circuit and the working method of the core circuit. When the startup circuit is powered on, the first bias input and the second bias input of the bandgap reference circuit arebiased to break the zero current state of the bandgap reference circuit. The control end of the startup circuit is connected to the output end of the bandgap reference circuit, so that the startup circuit can be turned off only when the output voltage of the bandgap reference circuit reaches the expected voltage value. When the start-up circuit is powered on, the third voltage output terminal directly provides the working current for the reference transistor, which makes the reference transistor out of the zero current state and enter the normal working state.

The invention provides a terminal device and a conversion circuit control method. The terminal device comprises a battery assembly, a charging circuit, a first conversion circuit, a second conversioncircuit, a controller and a system load; the controller is used for acquiring a current total voltage of the battery assembly; the battery assembly comprises at least two batteries connected in series; and the controller is further used for controlling one of the first conversion circuit and the second conversion circuit to start to work according to the current total voltage, wherein an output voltage of the first conversion circuit is a fixed value, and the voltage reduction rate of the second conversion circuit is a fixed value. According to the technical scheme, different conversion circuits can be selected according to the current total voltage of the battery assembly obtained in real time, so that the usability of the terminal device is improved.

A method and system for detecting a floating layer on a surveillance area of the sea surface, a site of interest being placed in or around the surveillance area. The method comprises the following steps: a) satellite measurement of a radar feedback return, the radar signal being emitted by a satellite toward the sea surface of the surveillance area; b) recognition of at least one swell profile of the sea surface in accordance with the satellite measurements; c) identification of the fluid properties corresponding to the recognized swell profiles; and d) emission of a warning when the fluid properties identified for one of the recognized profiles correspond to a sea surface that includes undesirable elements for the site of interest.