130results about How to "Protection reliability" patented technology

The invention relates to a high-security desensitization method based on a big data information system. The method is characterized by comprising the first step of conducting preprocessing before conducting desensitization use on sensitive data; the second steps of using a compound layering type desensitization algorithm model to conduct encryption on the sensitive data; the third step of conducting source tracing and auditing after conducting desensitization use on the sensitive data. According to the high-security desensitization method based on the big data information system, the compound layering type desensitization algorithm is adopted as a core, and the method is used for realizing protection of the visited sensitive information under the situation that an information system is invaded illegally and authority is utilized to break loopholes of a traditional desensitization algorithm. The high-security desensitization method based on the big data information system has the advantages that on the one hand, the danger coefficient of the sensitive data is effectively reduced, the security of the sensitive data is sharply improved, the breaking difficulty coefficient is sharply increased, and desensitization protection of the sensitive data is realized; on the other hand, efficiency characteristics of each arithmetic unit in the desensitization model can be given full play through the model algorithm.

The invention provides a charging pile interaction terminal. The charging pile interaction terminal comprises a phase selection switch, a current detection module, an analog digital conversion conditioning sampling unit, a communication module and a microprocessing unit, wherein the phase selection switch is provided with a three-phase input end, the three-phase input end is electrically connectedwith three-phase cables of distribution transformers respectively, and the output end of the phase selection switch is electrically connected with charging piles; the input end of the current detection module is electrically connected with the output end of the phase selection switch, and the output end of the current detection module is electrically connected with the input ends of the chargingpiles; the analog digital conversion conditioning sampling unit is provided with a first input end electrically connected with the three-phase input end and a second input end electrically connected with the current detection module; the input end of the microprocessing unit is electrically connected with the output end of the analog digital conversion conditioning sampling unit; the input end ofthe communication module is electrically connected with the output end of the microprocessing unit, and the communication module is connected with a distribution network control center and the charging piles through communication respectively. Flexible dynamic load regulation is realized.

The protection device is suitable to the on-line protection of the short circuit failure at DC 220 voltage, + / - 110 voltage in power plants and transformer substations. The invention is realized through following steps. The detection circuit for the short circuit in the branch through the data collection circuit, A / D conversion circuit is connected to the industrial control computer. The detection circuit for the bus voltage through the data collection circuit, A / D conversion circuit is connected to the industrial control computer. The detection circuit for the state of the breaker through the optical isolation input circuit is connected to the industrial control computer. The current criterion is I is greater than or equal to Id, and the voltage criterion is U is less than or equal to Ud.

The invention provides a protection method for a short-circuit fault of a direct-current line of a radial direct-current power distribution system. The protection method for the short-circuit fault of the direct-current line of the radial direct-current power distribution system comprises the steps that a fault monitoring point is set; a component is started to act; the short-circuit fault of the direct-current line is determined, and a direct-current breaker is switched off. According to the protection method for the short-circuit fault of the direct-current line of the radial direct-current power distribution system, the principle of the method is simple, the speedability is good when the fault of the line occurs, maloperation can be avoided under the condition that the fault of a subordinate direct-current power distribution line or a subordinate alternating-current power distribution line is most serious, and technical support is provided for the safe and reliable operation of the direct-current power distribution system.

The invention relates to the electric power communication technical field and provides a multipath simultaneous transmission method in wide area backup protection. The multipath simultaneous transmission method comprises selecting an optimal path performance evaluation value of path from all paths and setting a path performance evaluation value as the formula; performing comparison on path performance evaluation values and the formula; performing path selection according to a path selection evaluation result and enabling data to be transmitted and switched to an optimal path set. According to the multipath simultaneous transmission method in the wide area backup protection, the path selection is performed according to SCTP (Stream Control Transmission Protocol) protocol characteristics to obtain the optimal path set, the paths are transmitted and switched to the optimal path set for multipath simultaneous transmission, and accordingly the coupling throughput can be improved, the average data transmission delay can be reduced, the data transmission delay fluctuation is small, and accordingly a foundation is laid for the implementation of seamless switching, the reliability of the wide area backup protection is ensured, and the utilization rate and the data transmission efficiency of coupling resources are improved.

The invention relates to a self-feedback linear galvanostat integrating an adjustable thermistor, which belomngs to the technical field of a semiconductor power device. The self-feedback linear galvanostat comprises a junction-type field effect transistor (JFET) and an adjustable thermistor, which are integrated together, wherein one end of the adjustable thermistor is connected with a JFET source electrode, and the other end is connected with a grid electrode of the JFET. The self-feedback linear galvanostat is centralized on the adjustable thermistor, and the adjustable thermistor can obtain a resistance value meeting the requirement of the output current through a laser cutting way, so that different types of products can be obtained in the same batch. The thermistor is a positive temperature coefficient, under the working situation, the temperature is increased, the resistance is increased, the output current is reduced, and the reliability of an application system is protected. The self-feedback linear galvanostat has advantages of high integration, stability in output current, adjustability of the current and good temperature property and can be applied to the fields such as light emitting diode (LED).

The invention relates to an adaptive fault component current differential protection method based on current sag detection. The method comprises the following steps of setting parameters of an adaptive fault component current differential protection criterion, wherein the parameters include a criterion adaptive adjustment start setting coefficient and a criterion adaptive ratio braking coefficient; collecting a current injected by a direct current system into an inverter side alternating current system in a high-voltage alternating current / direct current interconnection system; determining a relationship between a current amplitude Im in a single-phase virtual alphabeta coordinate system and a protection adaptive adjustment start setting threshold value, and adjusting the ratio braking coefficient; and determining whether an alternating current line of an inverter side of the high-voltage alternating current / direct current interconnection system has an internal fault.

The invention relates to a method for enhancing differential protection performance by the coordination of mutation quantity fault discrimination and fuzzy harmonic analysis, which utilizes different characteristics of difference current and braking current mutation quantity to distinguish the internal and external faults of an area under different fault conditions. After a fault type is distinguished by the discrimination method, a fuzzy harmonic analysis criterion is combined to enhance the accuracy of fault discrimination so as to enhance the reliability and sensitivity of differential protection. The method is already adopted in a complete set of protection device of a DSA serial transformer and both the simulation results and the site practical situation indicate that the method has good prevention effect on reasons which easily cause differential misoperation, such as TA saturation, sympathetic surge, AD abnormity, and the like.

The invention relates to an HTCC system-level package structure and package method of a flip chip, in particular to an HTCC integrated system-level package structure applicable to a large-power consumption flip chip, and belongs to the technical field of system-level package. Large power consumption means that the power consumption of the flip chip is not smaller than 10W. Compared with an existing package structure, the digital-analog hybrid high-integration HTCC integrates system-level package structure applicable to the large-power consumption flip chip has the advantages that the problemsof compatibility of cooling, flip-chip bonding and a gold wire bonding process of the large-power consumption chip are solved, the system integration is also improved by a dual-sealing cavity design,the demand of satellite-borne digital ceramic system-level package is satisfied, and the HTCC system-level package structure has relatively high practicability and wide market application prospect.

The invention discloses a torque wrench used for assembling and disassembling working tips of ultrasonic medical equipment. The torque wrench comprises a wrench cover and a wrench seat. The upper portion of the wrench seat is arranged in the wrench cover in a sleeved and fixed mode. The lower portion of the wrench seat is of a hollow columnar structure with ends sealed. A wrench position opening is formed in a sealed opening of the wrench seat, and a working tip groove penetrating through the wrench position opening is formed in the circumferential surface and a sealing opening on the lower portion of the wrench seat from outside to inside. The torque wrench further comprises an insert. The insert is fixed to the upper portion of the sealing opening, an insert position opening is formed in the position, corresponding to the wrench position opening, of the insert, a working tip groove penetrating through the insert position opening is also formed in the position, corresponding to the working tip groove, of the insert from outside to inside, a clamping groove penetrating through the insert position opening is further formed in the insert, and a clamping piece is arranged in the clamping groove. The working tip groove can penetrate through the wrench position opening from the lower portion of the wrench seat to be clamped into the torque wrench from the lateral side, and therefore working tips of all shapes can be inserted into the torque wrench and can be assembled or disassembled.

The invention discloses an intelligent active management and control system for an operation site. According to the system, technical data information is collected and recorded in real time, wherein the information comprises identity recognition image data, early warning information, safety tool and instrument inspection data information, intelligent early warning safety belt sensor synchronous interaction data information, intelligent integrated safety helmet data information, toolkit opening and closing state sensing data information and the like, and therefore, ground monitoring personnel and remote management personnel can be facilitated to master the whole-process state of field work in real time, perform accident pre-judgment and analysis and take measures in due time; big data analysis is performed on the collected technical management data of the field operation personnel, so that the technical management data of the field operation personnel can be included in an annual safetycredit evaluation system for the field operation personnel; and employees will lose scores when being discovered violating regulations on the basis of a safety supervision 12-score system and according to employee evaluation modes, so that the employees can be evaluated standardly. With the system of the invention adopted, the omnibearing monitoring and management of an operation site can be enhanced so as to guarantee the safety of workers and properties of the operation site.

The invention discloses a differential protection method for double-terminal high-voltage direct current transmission lines. The specific steps are as follows: 1, constructing equivalent line models of out-of-zone and in-zone fault DC power transmission lines; 2: describing the voltage and current of the two measuring terminals of each pole DC line and the mathematical expressions in time domain related to the voltage and current; 3, describing a time domain mathematical expression of the integral expression of the voltage difference and the integral expression of the current sum, constructinga calculation term of the integral expression of the longitudinal impedance based on the fault component and the total fault quantity, and qualitatively analyzing the fault state result according tothe longitudinal impedance protection idea; 4, construct an improved criterion of current differential protection according to that qualitative analysis result. The method of the invention overcomes the problems that the traditional DC line differential protection lacks a relatively stable braking amount and is susceptible to high-frequency harmonic interference generated by line distributed capacitance, operation of power electronic devices and the like.

The invention relates to the information technical field, disclosing a virtual leased line (VLL) failure monitoring method and device, where the method firstly receives the message sent by local user end to opposite user end from the VLL; judging whether the received message is a link protocol message and when the message is a link protocol message, judging whether the link protocol message is a failure message. In addition, the invention provides a VLL failure monitoring device. And the invention can monitor the link failure in any position when the same media are interconnected and fast reroute VLL service according to the monitored failure, so as to be able to effectively protect VLL service reliability.

The invention discloses a goods sorting system and a sorting method. The goods sorting system comprises a feeding device, a transmitting device, a pushing device, a kick-off device and a sorting bin. The sorting bin comprises a plurality of bin bodies; the feeding device, the transmitting device, the pushing device and the kick-off device are sequentially connected; the transmitting device is a U-shaped rotation channel which comprises a feeding line and a blanking line; the feeding device is used for conveying goods onto the feeding line; the pushing device is connected with the feeding line and the blanking line, and is used for pushing goods detected on the feeding line to the blanking line; the kick-off device is used for kicking off each goods on the blanking line into one bin body; the sorting bin is located under the kick-off device; the goods sorting system further comprises a controller; and the feeding device, the pushing device and the kick-off device are controlled by the controller. The goods sorting system is compact in structure and can realize automatic sorting of goods.

The invention proposes a protection system, which comprises a control module, three output modules, a triple safety protection loop and a controlled object, wherein the control module outputs protection instructions; the three output modules are electrically with the control module and divide the protection instructions into three paths of independent protection instructions; the triple safety protection loop is electrically connected with the three output modules; and the controlled object is electrically connected with the triple safety protection loop. When two and more than two paths of protection instructions in the three paths of independent protection instructions are effective, an action is started to protect the controlled object, and otherwise the action is not started.

The invention provides a self-locking protection circuit, comprising a sampling circuit, a comparator, a self-locking module, an unlocking control module and an output module, wherein the sampling circuit is connected with the input end of the comparator, and the sampling circuit is used for acquiring current / voltage parameters in the main circuit; the first end of the self-locking module is connected with the input end of the comparator, and the second end of the self-locking module is connected with the output end of the comparator, and the unlocking control module is connected with the first end of the self-locking module; and the output module is connected with the output end of the comparator and the second end of the self-locking module, and the output module outputs a fault signal,and the fault signal is transmitted to a software control unit and / or a hardware control unit of the main circuit. The air conditioner provided by the invention is provided with the self-locking protection circuit, and when the protection circuit breaks down, the level of the fault signal is overturned while the self-locking module locks the level of the fault signal, and after the fault is removed, the unlocking control module unlocks the locked level of the fault signal, so that the reliability of the protection circuit and the safety of the air conditioner are ensured.

The invention relates to a full impedance distance protection method based on an FPGA. The method includes the steps of 1 calculating impedance protection, 2 adopting an upper computer for definite value matching, 3 adopting a shifting multiplication and division method, 4 adopting a state machine for time division multiplexing, 5 testing the impedance protection characteristic and 6 carrying out simulation testing. Based on a hardware platform of the FPGA, the FPGA is used for calculating the processing speed of improving the hardware protection logic in parallel at high speed to ensure the safety and reliability of motions. By the adoption of a full impedance distance protection hardware algorithm based on the FPGA, judgment processes of starting elements such as positive sequence voltage, negative sequence voltage and currents are reduced, and real-time calculation and logical judgment are carried out to further protect the reliability of relay protection motions.

The invention relates to the field of strip steel rolling production, in particular to a fixed-width trimming device and method for cold-state strip steel. The fixed-width trimming device for cold-state strip steel comprises two rows of high-pressure spray nozzles, a turning roll, a tensioning unit, a scrap cutter and a control device, wherein the two rows of high-pressure spray nozzles are arranged at the two sides of strip steel respectively in a direction consistent with the moving direction of the strip steel. The fixed-width trimming method for cold-state strip steel comprises the following steps: tensioning strip steel so that the surface of the strip steel is flat and straight and has stable tension; preparing the mixed solution for spray cutting, wherein the high-pressure spray nozzles adopt the mixed solution of industrial pure water and abrasive; and finally controlling the high-pressure spray nozzles to perform trimming by the control device. Based on the high-pressure abrasive jet cutting technology, the device and method provided by the invention realize combination of high-speed cutting and good cutting quality; and smooth-transition tracking cutting is adopted in width specification switch of the strip steel, an S-shaped track is obtained, and the breakage probability of the welded seam area is effectively reduced.

The invention provides an extra-high voltage converter transformer network side 750kV outgoing line matching structure which is simple in structure, good in insulating property and convenient to transparent. The extra-high voltage converter transformer network side 750kV outgoing line matching structure comprises a box cover higher than the edge of a converter transformer box, a flange on the box cover, and an inclined lifting seat and a straight lifting seat which are connected sequentially on the flange on the box cover; the edge of the box cover is inclined downwards and is connected to the edge of the converter transformer box; the flange on the box cover is arranged on the inclined part of the box cover; the top end of the inclined lifting seat is connected horizontally with the straight lifting seat, the bottom end of the inclined lifting seat is arranged obliquely and is connected to the flange on the box cover; the diameter of the straight lifting seat is smaller than that of the top end of the inclined lifting seat, and the diameter of the top end of the inclined lifting seat is larger than that of the bottom end; the side, close to the box cover, of the bottom end is higher than the side close to the edge of the converter transformer box; the side wall, close to the edge of the converter transformer box, of the inclined lifting seat is arranged obliquely outwards; the network side outgoing line is lead out vertically from the flange on the box cover, the end of the network side outgoing line is lower than a transportation outer limit outline; the network side outgoing line is connected to a network side sleeve or external lead by a voltage sharing device arranged in the inclined lifting seat.

The invention provides a distribution network fault processing method based on 5G communication technology. In view of the shortcomings of conventional various distribution network fault processing modes, such as long fault processing time, high construction cost, and poor selectivity, the distribution network fault processing method of the invention, by means of the characteristics of low latency, high bandwidth, stable transmission of 5G communication, uses the 5G communication as a fault signal transmission channel, comprehensively takes account of the technical indicators of 5G communication, such as the transmission delay, the packet loss rate and the like, achieves high reliability, good selectivity and good fault tolerance based on fault information interactive transmission and logical strategy between terminals, realizes fast fault location and isolation of feeder line faults within 200 milliseconds and automatic restoration of power supply in non-fault areas, realizes the transition of the distribution network fault processing from a minute level to a millisecond level, achieves smaller area of power outages, less number of power outages, shorter call waiting time, and significantly improves the reliability of a distribution network.

The invention discloses a micro-vibration suppression platform based on an intelligent piezoelectric array. The micro-vibration suppression platform comprises an upper platform, a lower platform, main dampers and secondary dampers, wherein the main dampers and the secondary dampers are uniformly distributed between the upper platform and the lower platform; the main dampers and the secondary dampers are inclined; extension lines of the axes of the main dampers are intersected at a point above the upper platform; each damper comprises an outer sleeve, main shaft rods located on the central axis of the damper and a piezoelectric stack array arranged in the middle of the outer sleeve; each piezoelectric stack array at least comprises two piezoelectric stacks; the piezoelectric stacks are symmetrically distributed relative to the main shaft rods; and the centers of the arrays are hollow. Through the micro-vibration suppression platform, control and suppression of the micro-vibration signals in six degrees of freedom are realized, so that comprehensive suppression of the micro-vibration signals from all directions and motion dimensions is realized; the reliability of the vibration suppression platform is greatly improved; and the micro-vibration signals with low frequency and high anisotropy and randomness can be accurately suppressed in all directions and dimensions.

The invention discloses an online type automatic adhesive dispensing machine. The online type automatic adhesive dispensing machine comprises a master control module, a feeding module, a CCD locatingdetection module, a mechanical motion module, an adhesive dispensing module, a detection module and a removal module. The master control module is internally provided with a screening unit. The screening unit is internally provided with a scrap choice box and a dispensed adhesive supplement choice box, wherein the scrap choice box and the dispensed adhesive supplement choice box can be manually clicked for selection. An adhesive dispensing process of the online type automatic adhesive dispensing machine comprises a feeding procedure, an adhesive dispensing procedure, a detection procedure, a detection compensation procedure and a discharging procedure. By means of the online type automatic adhesive dispensing machine, the adhesive dispensing missing condition of parts subjected to adhesivedispensing can be preliminarily detected; by means of the screening unit in the master control module, manual input is conducted on screening elements namely the scrap choice box and the dispensed adhesive supplement choice box, and operators can flexibly change the screening mechanism according to the actual condition of the parts subjected to adhesive dispensing; in a secondary detection work group adopted in the adhesive dispensing process, quality detection is conducted on an adhesive dispensing face, so that quality detection precision of the parts subjected to adhesive dispensing is greatly improved; it is guaranteed that the parts which is subjected to adhesive dispensing and flow into the market are high-quality products; and the brand value is increased.

The invention provides a composite high voltage semiconductor device; a layout comprises a straight edge portion arranged in a straight line; the straight edge portion comprises enhanced devices including the following: a semiconductor substrate; a first high voltage trap and a second high voltage trap arranged in parallel in the semiconductor substrate; a first field oxide layer arranged in the first high voltage trap; a first drain electrode ohmic contact zone arranged in the first high voltage trap of a first side of the first field oxide layer; a first source electrode ohmic contact zone arranged in the second high voltage trap; a first grid electrode at least covering the semiconductor substrate between the first source electrode ohmic contact zone and a second side of the first field oxide layer, wherein the first side of the first field oxide layer is far away from the second high voltage trap, and the second side of the first field oxide layer is close to the second high voltage trap. The doped concentration of the second high voltage trap is smaller than that of the first high voltage trap. The reliability of the device can be improved.

The invention provides a method for distinguishing magnetizing inrush current by sample current added with zero-sequence current component. The sample current added with the zero-sequence current component is utilized to sufficiently reserve wave forms of the inrush current and harmonic characteristics. The method has the beneficial effect of more actually reflecting exciting current. The method is used to realize sufficient decoupling of each phase inrush current with slight mutual influences, achieve split-phase inrush current braking, and improve reliability of magnetizing inrush current lockout of transformer differential protection and sensitivity of air-drop fault actions.

The invention relates to a crossing vehicle guide sign device of blocked roads and a control method and application thereof. The crossing vehicle guide sign device comprises a first judgment module, a first control module, a second control module and a display module. The first judgment module is connected with the first control module and the second control module respectively; and the first control module and the second control module are respectively connected with the display module. A light emitting diode (LED) display element is adopted for the display module and has two working states, namely driving-out port marking and driving-in port marking. The control method of the crossing vehicle guide sign device is used for controlling changing states of the changeable sign device located at crossings of the express way. By adopting the crossing vehicle guide sign device of blocked roads and the control method and application thereof, reliable and effective control, directing and management for traffic flow at the crossings of the express way can be achieved, the problem of resource utilization waste of the crossings of the express way and signal devices at the crossings can be solved, express way construction cost is reduced, driving operation difficulty of drivers at the crossings of the express way is reduced, and express way traffic efficiency and safety coefficient are improved.

The invention discloses an electronic signature device, a realization method and a client terminal. The method comprises : the electronic signature device generates reserved information based on reserved characters left by users and stores the reserved information in the client terminal in advance; the electronic signature device obtains the reserved information stored in the client terminal and displays the reserves characters on a display screen of the electronic signature device when the client terminal is being verified; and the client terminal is determined to pass the verification after confirming the reserved characters correct through the physical bottom on the electronic signature device. The invention overcomes the defects that the prior art cannot fundamentally guarantee the secrecy of the inputted data and the security of the user information.

The invention discloses a method for protecting a transmission service and a sink node thereof, which belong to the field of network transmission. The method comprises the following steps: a sink node that is connected with main / standby communication devices detects the operating states of the main / standby communication devices and judges whether the detected states of the main / standby communication devices are the duty state; if yes, the service is transmitted between the sink node and the main / standby communication devices; if the detected states are the backup state, the service directly reaches through the sink node and is transmitted to the next sink node. The sink node comprises a detecting module, a judging module, a transmitting module and a reach-through module. The method ensures the reliability of the service transmission, ensures the simple operation and the low development cost of the service transmission, greatly reduces the transmission band width, increases the band width utilization rate, reduces the transmission cost and the running / maintenance cost, and improves the network reliability. The method and the sink node are widely used for the transmission of the point-to-multipoint backup service.

The invention discloses an experiment platform for testing the dropping resistant performance of a magnetic suspension bearing, which comprises a shell, a radial bearing stator, an axial bearing stator, a motor stator, two protection bearings, a magnetic suspension shaft system and two contact force measuring platforms, and is characterized in that the radial bearing stator, the axial bearing stator and the motor stator are all installed in the shell, and the two protection bearings are installed outside the shell and located at the left and right ends of the shell respectively; the magnetic suspension shaft system is arranged in the shell, and the left and right ends of the magnetic suspension shaft system stretches out of the shell; and the two contact force measuring platform are arranged outside the shell and located at the left and right ends of the shell respectively, the protection bearings are installed on the contact force measuring platforms respectively, and each contact force measuring platform comprises four piezoelectric sensors. The experiment platform for testing the dropping resistant performance of the magnetic suspension bearing is suitable for evaluating the reliability and the service life of the protection bearings and studying the dropping resistant performance of the protection bearings, and is high in measurement accuracy.

The invention discloses a display device, an array substrate and a manufacturing method. The array substrate comprises a semiconductor layer, a first grid insulation layer and a second grid insulation layer. The first grid insulation layer is formed on one face of the semiconductor layer by use of a first method. The second grid insulation layer is formed on one side, opposite to semiconductor layer, of the first grid insulation layer by use of a second method. By use of the first method, reliability of the semiconductor layer can be protected. Thus, the semiconductor layer is prevented from being damaged and reliability of a thin film transistor is improved.

The invention relates to a law-related personnel group portrait analysis system and method. The method mainly comprises six parts of law-related data fusion and preprocessing, law-related data deep desensitization, fusion data feature processing, law-related personnel group mining, group portrait construction and portrait display. Deep desensitization is carried out on judicial data, information leakage is prevented, information safety is protected, and for group portraits of legal personnel involved in multiple service systems, special groups can be mined conveniently, and targeted strategy making is carried out; besides, the method has certain flexibility, portrait features can be adjusted according to user experience, and visual display can be performed for special groups.