825 results about "Device breakage" patented technology

A data storage system and method capable of reducing the operating temperature of the data storage system, removing any overheating storage devices from operation, reconstructing data, and evacuating data from the overheating storage devices before the devices and the data are damaged or lost.

A pain abatement catheter system particularly suited for treatment within the epidural space of a patient which includes an epidural introducer assembly, an epidural catheter and a steerable epidural guidewire assembly. The introducer assembly provides a one-piece introduction into the epidural space and includes an elongated introducer needle, an inner stylet, and a flexible outer sheath with a hub. The improved epidural catheter may be safely introduced into the epidural space under fluoroscopic guidance and can be effectively steered through tortuous anatomy, adhesions, or scar tissue for the purpose of delivering medications or contrast dyes to highly selective areas of the epidural space including nerve-root-sleeve injections. The epidural catheter / hub assembly is advanced over a soft atraumatic tip guidewire which significantly decreases the risk of device breakage, nerve root damage, or spinal cord injury. The improved catheter also increases efficacy, maneuverability, and safety in the diagnosis and intervening treatment of acute and chronic back and limb pain. The steerable epidural guidewire assembly allows for safely introducing a guidewire into the epidural space through a flexible sheath cannula and effectively maneuvering the catheter into highly specific areas while reducing the risk of epidural, nerve root, or spinal cord injury.

A computer cord storage and dispensing organizer pack and system for securing and organizing cords, connectors, lines, power supply, computer mouse, and other equipment is disclosed, the pack being small enough for insertion into a laptop computer carrying case, the pack having pockets for gathering computer equipment, the pockets of the pack having apertures or channels for cords to extend, the pockets and channels being optimized to create an efficient cord interface between pack and computer, and a compact holder during travel, thereby reducing tangle, setup time, loss of components, and damage to equipment.

The invention discloses a running state online monitoring system for a large-scale transformer, which is divided into a monitoring device and a central main station, wherein the monitoring device not only is used for monitoring the direct current flowing through a neutral point of the transformer on a real-time basis, simultaneously collecting the high and low-voltage side voltage, the current, the power, the harmonic wave and other variables of the transformer and judging whether the transformer runs in a direct-current magnetic bias state in combination with the vibration, the noise, the temperature and other parameters of the transformer; recording and transmitting the parameters of reflecting the affected degree of the transformer in the running process to the central main station by using a modern communication means to further analyze the interference reason and the degree of influence on a whole power grid; and immediately sending out an early warning to effectively avoid the equipment damage, the accident trip and other heavy loss.

The invention discloses an overvoltage protection method of a high-voltage direct current system. Once a high-tension battery is disconnected with the high-voltage direct current system, a motor controller is in a passive feedback mode and monitors voltage of a high-voltage direct current network in real time. Once the voltage of the high-voltage direct current network is larger than or equal to the maximum allowing voltage, the motor controller is in an initiative short circuit mode. At the same time, at least one auxiliary discharge device is opened. Once the voltage of the high-voltage direct current network is less than the maximum allowing voltage, the motor controller is in the passive feedback mode. Once the voltage of the high-voltage direct current network is less than or equal to the minimum allowing voltage, all auxiliary discharge devices are closed. Under the condition of breakdown of disconnection of the high-tension battery, the existing motor controller is only provided with a safe mode. The overvoltage protection method of the high-voltage direct current system divides the safe mode into the passive feedback mode and the initiative short circuit mode assisting with an auxiliary discharge mode of the high-voltage direct current system, and thereby the overvoltage protection method of the high-voltage direct current system has the advantages of effectively solving the problem of overhigh voltage of the high-voltage direct current network of a new energy automobile and reducing risk of equipment trouble.

Aiming at a problem existed in the current method for solving contactor contact adhesion, the invention provides a direct current power supply system contactor adhesion detection apparatus and a detection method with higher precision and a stronger applicability and an electric vehicle which uses the apparatus and / or the method. Through using a precharging module and a capacitor pack in a power-driven controller in a system applied by the contactor, charging and discharging and voltage detection is performed to the capacitor pack which is connected with the direct current power supply through the contactor. A detection result is compared so as to realize the contactor adhesion detection. Equipment damage and even personnel injury caused by the contactor adhesion can be avoided. Reliability of the contactor application system can be increased.

The invention relates to the technical field of information technology equipment, and discloses information technology teaching equipment. The information technology teaching equipment comprises a base. A frame body is fixedly connected with the top of the base. A baffle plate is fixedly connected with one side of the frame body, and a top plate is fixedly connected with the top of the frame body.A supporting column is fixedly connected with the top of the top plate. A mounting groove is formed in the inner cavity of the supporting column. A lighting device is arranged in the mounting groove.The top of the supporting column is fixedly connected with a dustproof plate, and a heat dissipation net is arranged at the top of the top plate. The top of the top plate is fixedly connected with anexhaust fan, and the exhaust fan is arranged on one side of the heat dissipation net. According to the information technology teaching equipment, universal wheels on the two sides of the bottom of abottom plate can move freely, so that the position of the equipment can be conveniently adjusted. Therefore, students can conveniently watch the equipment and the occupied area of a classroom is reduced. Both the time and the manpower are saved during the carrying process of the equipment. Through the adjustment of a second threaded rod, a support is adjusted to be in contact with the ground conveniently. Therefore, the displacement of the equipment caused by accidental collision is prevented, and the equipment is prevented from being damaged.

Breakage in a coupling portion of a side plate subjected to repeated flexure is prevented by using fatigue resistant resin materials in the side plate. The coupling portion of the side plate due is subjected to repeated flexure. Excellent fatigue resistance is realized. The fatigue resistant resin material is selected from the group of an elastomer- or rubber component- compounded polyamide resin and polybutylene terephthalate resin. The rubber component is selected from the group of ethylene-propylene rubber (EPDM), nitrile rubber (NBR) and butyl rubber (IIR).

The invention relates to a method for judging a direct current arc fault based on a real-time measured multi-band frequency component rate. Along with the large-scale application of photovoltaic generation, and particularly the wide application of a photovoltaic solar panel to the roof and the external wall of a building, fires caused by a photovoltaic generation system happen in many places. Through analysis, people find that the fires are basically caused by the direct current arc fault of the photovoltaic generation system, and therefore, detecting and isolating the direct current arc fault for causing equipment damage and fire hidden danger become problems needed to be solved, however, due to the specificity of the direct current arc fault of the photovoltaic generation system, the conventional fault waveform based arc fault detection principle is not suitable for the direct current arc fault of the photovoltaic generation system. The method has the core thought that the overlarge energy is contained in the arc to cause the fire damage caused on the basis of the fault arc, and by using a method for detecting the energy source ratio of the frequency spectrum component energy of multiple bands in a voltage and current waveform to the total spectrum, the direct current arc faults possibly causing fires can be rapidly and reliably detected without being affected by other noises in the system, and the safety of the photovoltaic generation system is ensured.

The present invention discloses a safe data storing method. By connecting with a plurality of storage device, the computer system can store any one data into two separate storage devices simultaneously to form a relationship; when the data in one of the storage device is damaged, or the storage device is damaged, the present invention can take out the data from the other storage device which stores the corresponding data and stores the data into other storage device, to guarantee that any one of the data has usable data in two storage devices simultaneously. When reading data from the two storage devices, the present method can select one, and when one storage device storing the data is damaged, the method can read data from the other storage device. The present invention has low cost, strong data safety and strong expansibility, can increase or decrease the capacity of the storage device at will, and is applicable to the storage system formed by multi hard disks and multiserver, and has high data read rate. No recreating time is needed, when finding data damaged during the course of data reading, the present method can retrieve on line, without influence for the data reading and running.

The invention provides a device and a method for simulating interface card hot-plugging. A hot-plugging analog module arranged on a master card is used for timing control of on and off of an interface card, in-place signals when the hot-plugging analog module is in physical hot plugging-in and interrupt signal change when the hot-plugging analog module is in physical hot pulling-out, so that physical hot plugging of the analog interface card is completed, the problem that equipment is easily damaged due to manual repeated physical hot plugging in a physical hot plugging test of a system is avoided, and the problem of extremely high workload on development and test links is solved.

The invention relates to a method of manufacturing a semiconductor element. In the implanting step, Li, S or Se ions as a dopant having a larger diffusion coefficient to silicon than P or As usually used as a dopant in silicon semiconductor manufacturing process. In the activating step, the ion implanted surface is laser annealed by combining a solid laser or an excimer laser and a semiconductor laser, the semiconductor laser irradiates the whole wafer surface with laser beams. The solid laser or excimer laser emits pulsed laser beams. Device failure of the manufactured semiconductor element is avoided by this arrangement, thus manufacturing a semiconductor element having satisfactory characteristics. Device breakage of the manufactured semiconductor element due to heat induced during laser irradiation is prevented by this method.

The invention discloses an intelligent teaching and checking system for an electrical control experimental training. The intelligent teaching and checking system comprises an experimental training operating platform, a control unit and an upper computer, wherein the control unit is connected with the experimental training operating platform and the upper computer respectively; the control unit comprises an output display module; an experimental training project standard wiring data is preset in the upper computer; the control unit collects the actual wiring data of the experimental training operating platform and compares with the experimental training project standard wiring data, sends comparison result to the upper computer for performing wiring quality checking, and meanwhile sends a corresponding display signal to the output display module according to the comparison result to display the comparison result. The intelligent teaching and checking system for the electrical control experimental training has the advantages of being simple in structure, simple and convenient to operate, and capable of improving teaching efficiency and avoiding device damage.

The invention relates to a digital control system (DCS) signal ineffectiveness processing method and a digital control system (DCS) signal ineffectiveness processing system for a nuclear power station. The method comprises an ineffectiveness detecting step, namely detecting whether an input DCS signal is effective, if so, outputting the DCS signal to a downstream processing device to realize DCS logic control, and otherwise, executing a data processing step; and a data processing step, namely calling a DCS default value corresponding to the ineffective DCS signal from a default value databaseto replace a signal value of the ineffective DCS signal, and outputting the processed DCS signal to the downstream device. By performing ineffectiveness process on the DCS signal, the DCS default value can immediately substitute for the DCS signal when the DCS signal becomes ineffective; therefore, the function of the DCS is optimized, the control system of the nuclear power station can be kept running safely and stably, and the casualty chance of people and the damage chance of devices are reduced.

The invention provides a production method of rolled laminated metal composite roll, in which laminated metal composite blank is in vacuum state before assembling and rolling and in non-vacuum state in the hot rolling process. The method is characterized in that the inner end of an aluminum hollow pipe segment enters a reserved rolling extension space in the composite blank, the other end is connected with a vacuum pump; and the composite blank is evacuated through the vacuum pump and the pipe segment. The method can ensure the high vacuum degree in the composite blank before rolling, and can keep the internal junction surface of the composite blank clean and prevent oxidation. The method can ensure that air is discharged in time, thereby radically solving the problems of the prior art caused by the difficulty in discharging air in the composite blank, such as surface damages of the composite rolls or even damages to rolling equipment. The laminated metal composite material roll prepared by the method has the advantages of high strength, good mechanical processing performance, high corrosion resistance, high surface decorativeness, high quality and low production cost.

The invention relates to a temperature detection and control device, in particular to a material temperature detection and control device for a sintering pellet annular cooler. The material temperature detection and control device comprises the annular cooler and an annular cooler discharge hopper communicated with the tail of the annular cooler, and is characterized by further comprising more than one infrared thermometer arranged above an annular cooler discharge opening by a heat insulation bracket, wherein the infrared thermometers are connected with a control device, and spray pipes are arranged above the tail of the annular cooler and above the annular cooler discharge hopper respectively. The material temperature detection and control device has the benefits that in a sintering pellet cooling process, a cooled material temperature field at the tail of the annular cooler is indirectly monitored by the infrared thermometers, and after a temperature is within a set range, corresponding movement protection is conducted by contrast judgment of a temperature control device. In addition, a discharge temperature of the annular cooler can be effectively controlled within a safe range, so that damage or ignition of an adhesive tape machine due to the excess temperature is avoided, and equipment damage, economic losses and casualties due to the excess temperature are avoided.

The invention relates to a comprehensive risk assessment method for power grid 500kV terminal substation construction and belongs to the technical field of electrical engineering. By enabling a 500kV substation to be connected to a power grid in a terminal station mode, a 500kV grid structure can be optimized, but lowering of the reliability level and increasing of the risk are caused simultaneously, and accordingly comprehensive assessment needs to be performed on the rick of the terminal station. To solve the problems, a comprehensive 500kV terminal station risk index system and the corresponding risk assessment method are provided, and the risk of the 500kV terminal station is quantized in four aspects including power grid safety, loss of power shortage and power supply, equipment damage and social influence. According to the method, risk factors in the four aspects including the power grid safety, the loss of power shortage and power supply, the equipment damage and the social influence are considered comprehensively, direct technical influence and indirect social influence of the power grid risk are covered comprehensively, and safety quantization of a planning scheme is accurate and comprehensive.

The invention discloses an electric power distribution network operation monitoring method and system based on a GIS platform. The electric power distribution network operation monitoring system based on the GIS platform comprises a data acquisition unit, a data monitoring unit and a data calling unit, the data monitoring unit is in butt joint with the data acquisition unit and the data calling unit through special signal ports, the data acquisition unit comprises a digital electric meter, a data collector and a wireless receiving and sending radio station, the data calling unit comprises a dispatching unit and a management module, the data monitoring unit comprises a plurality of independent GIS systems and a early warning module based on the GIS software platform. According to the electric power distribution network operation monitoring system based on the GIS platform, through the real-time monitoring of an electric power distribution network, equipment damage caused by overload and other reasons can be prevented, load loss is reduced, the power distribution reliability is improved, the system can also take part in assisting in making an optimal service scheme when an breakdown occurs, the workload of front-line power distribution workers is lightened, the labor efficiency of workers is improved, the improvement of the enterprise competitiveness is effectively guaranteed, and the electric power distribution network operation monitoring system based on the GIS platform is worthy of wide popularization and application.

The embodiment of the invention provides a protecting casing with a safety air bag. The protecting casing comprises a protecting casing body, a circuit board, the safety air bag and an air bag air inflation device; a gravity sensor on the circuit board is used for sending a free falling indication signal to a control unit when the free falling of the protecting casing body with equipment is detected; a touch switch on the circuit board is used for detecting the arrangement of the equipment in the protecting casing body, and sending an equipment arrangement indication signal to the control unit; after the control unit receives the signal, a command signal is sent to the air bag air inflation device; after the air bag air inflation device receives the command signal, the safety air bag is inflated with air; the safety air bag is arranged on the protecting casing body, and is ejected out and opened when the air bag air inflation device is inflated with air, and the protecting casing body falls onto the safety air bag. The protecting casing has the advantage that when the equipment falls down, the safety air bag can be quickly ejected out, and then various pieces of equipment can be protected, so as to prevent the damage to the equipment because of falling.

A wireless charging system includes a wireless charging device and a power-consuming device installed in a charging area. The wireless charging device has a signal conversion module connected to a controller, a transmitter antenna and a power input terminal. The power-consuming device has a receiver coil connected to a rectifier and outputting generated power through a power output terminal. Before or when the wireless charging device charges the power-consuming device, the controller of the wireless charging device can detect a power consumption status, voltage and current information and phase difference information of the transmitter antenna to instantly determine if any foreign metal object enters the charging area, thereby preventing high temperature generated by the foreign metal object from causing equipment damage and danger and enhancing wireless charging safety.

The invention provides an intelligent molten iron conveying system. The system comprises a haulage motor body, a molten iron conveying vehicle body, a vehicle-mounted control system and a ground control system, wherein the vehicle-mounted control system is used for controlling motions of the haulage motor body and the molten iron conveying vehicle body according to a control instruction, the ground control system is used for collecting external environment information and controlling a ground advancing line of the haulage motor body and the molten iron conveying vehicle body according to the control instruction, and a centralized control platform is used for sending the control instruction to the vehicle-mounted control system and the ground control system. Automatic interaction of information and the control instruction is performed through the centralized control platform, a molten iron transporting vehicle achieves unmanned and organization scheduling intelligence in the whole molten iron transporting working process from a blast furnace casting field to a steel making transit station, the haulage motor operation efficiency is improved, the iron molten temperature drop is lowered, the road and haulage motor operation safety is improved, equipment damage and accidents caused by faults such as worker operation and judgment are completely eradicated, the operation risk is lowered, and personal safety of workers is ensured.

The invention relates to the field of a two-dimension code application system, in particular to a system and a method for preventing misoperation in an electric power system by using two-dimension codes. The method for preventing the misoperation in the electric power system by using the two-dimension codes sequentially comprises the following steps that: (1) a two-dimension code database is manufactured; (2) two-dimension code pictures are extracted and manufactured; (3) the two-dimension code pictures are pasted to corresponding positions of equipment; (4) a mobile operation order system is built; (5) an operation order is manufactured; (6) two-dimension code information of the equipment is implanted into relevant items of the operation order; (7) the operation order is pushed to a mobile terminal; and (8) mobile terminal equipment is used for scanning the two-dimension codes of the equipment. The system and the method provided by the invention have the advantages that the functionality is high; the operation by operators is convenient; great importance is realized on safety risk elimination, personal injury and equipment damage avoidance and safe operation guarantee; and the system and the method are suitable to be widely popularized and applied.

The invention relates to an alarm for the approach of construction equipment to a high-voltage power transmission circuit, in particular to an alarm preventing large-size construction equipment such as cranes, and the like from approaching high-voltage power transmission circuits in a distance which is smaller than a safety distance. The alarm mainly comprises a detection device and an alarm device, wherein a circuit structure of the detection device comprises a transmission line distance sensing transducer, a safety distance judger, a transmission terminal frequency-modulation amplifier, a wireless signal generator and a transmission antenna which are all sequentially connected. A circuit structure of an alarm device comprises a receiving antenna, a wireless signal receiver, a second amplification dynatron, a frequency-modulation amplifier, a light emitting diode connected with the frequency-modulation amplifier, and a buzzer which are all sequentially connected. The invention can meet different requirements of the safety distance of transmission lines in different voltage levels, has convenient maintenance, can reduce the transmission line trip, casualties and equipment damage caused by the external damage of transmission lines by large-size construction equipment such as cranes, and the like, and can improve the power supply reliability of transmission lines.

An intelligent power supply system having wireless identification employ an RFID wireless identification technique in collaboration with multiple intelligent receptacles respectively equipped with multiple intelligent chip modules mounted in multiple power sockets of the receptacles to precisely locate each electric appliance within a region and power consumption information of the electric appliance. The collected product and power consumption information is transmitted to a remote site for instant monitoring and control through a network, thereby facilitating the management of power utilization efficiency of equipment inside a region and reducing the severe equipment damage and data loss caused by abrupt power outage, including regular power supply detection and allocation, automatic power-off protection upon power irregularity, early notice of obsolete parts.

The invention relates to a fresh air system control method based on real-time monitoring of indoor air quality. Indoor air quality parameters are monitored by an air quality monitoring unit in real time, power of a fan unit is adjusted by a central controller according to the monitoring result, and the technical effect of energy saving is realized. A dust removal control module for detecting dustparticle breakdown voltage, an ultrasonic vibration module and a clear water cleaning water are arranged in a self-cleaning electrostatic precipitation unit, automatic cleaning of a dust collecting plate is realized, and the safety problem and the equipment damage problem caused by manual cleaning of the dust collecting plate are avoided. According to the method, the electrostatic precipitation manner is adopted, no consumable exists, the use cost is reduced, and the economy is good.

A method of manufacturing a semiconductor element includes implanting ions of a dopant having a large diffusion coefficient into a semiconductor to provide a doped layer; and irradiating the doped layer with a plurality of pulsed laser beams supplied by a plurality of laser irradiation devices to activate the doped layer and provide an activated doped layer. The activated doped layer may be one of a single doped layer or a plurality of successive doped layers which each have respective conduction types that are one of identical or different. Device breakage and failure of the manufactured semiconductor element due to heat induced during laser irradiation are substantially prevented by this method.

The invention provides a door interlock short-circuit protection loop for an elevator. The door interlock short-circuit protection loop comprises a door interlock relay, a machine room overhauling switch unit, a door interlock loop, a short-circuit unit and an auxiliary relay unit, wherein the machine room overhauling switch unit comprises a first switch and a second switch; and the auxiliary relay unit comprises an auxiliary relay and an auxiliary relay switch. In the invention, a way for forbidding the elevator to run under the condition that a short-circuit line of the door interlock loop is not detached is adopted, so that equipment damage or personnel hurt caused by door opening and carriage of the elevator due to direct short circuit of the door interlock loop is avoided.

The invention relates to a method for judging the stability of a goaf roof. The method comprises the following steps: defining the goaf overlaying stability safety factor as the ratio of the actual shear strength-tensile strength ratio of overlaying to the shear strength-tensile strength ratio of critical failure after reduction based on the concept of material strength reserve according to the physical and mechanical properties of rock; reducing the roof overburden cohesion, internal friction angle and tensile strength by use of an FLAC3D finite difference program, and determining the critical failure strength of the roof by adopting the central tension and plasticity zone connection of the goaf roof as a critical failure judging standard; and performing traversal search by a bisection method to obtain a safety factor conforming to the convergence condition to realize quantitative evaluation on whether the goaf roof is stable. The method provided by the invention provides guidance to safe mining of an underground mine and avoids the safety accidents in mine production such as casualties and equipment damage caused by settling and even collapse of unstable goaf roof during underground mining.

The invention relates to a device and a method for controlling cold-rolling steel strip pickling turbulence. In the device, the inlet end of a pressure gauge is connected with a lateral jet acid valveconnected to a main jet acid tube, and the outlet end of the pressure gauge is connected with a lateral jet acid tube; and the lateral jet acid valve and the pressure gauge are connected with an external computer respectively. According to quality of steel strip, the optimal pickling temperature is determined and the relationship between the steel strip speed and the turbulence degree is set; thenumeric conversion and the automatic control are completed by three functional blocks PLI10, ADC and PIC of the computer respectively; by automatically adjusting the lateral jet acid valve and the pressure gauge, the dynamic control of the pickling turbulence degree of the steel strip is realized, the overpickling of the steel strip is avoided, and the surface quality of the cold-rolling plate isimproved; the equipment damage due to the broken band of a rolling mil is reduced, the yield of the cold-rolling plate and the operating rate of the rolling mill are improved, and several million yuan can be saved annually.