3241results about How to "Guaranteed operational safety" patented technology

The invention discloses a highway operation safety-based mobile monitoring and early warning system and method. The system comprises a data acquisition unit, a data storage unit, a data processing unit, an electronic display screen and a wireless communication module, wherein the data acquisition unit, the data storage unit, the electronic display screen and the wireless communication module are all connected with the data processing unit; the system is arranged on a vehicle; and an accumulator is adopted to provide power. The method specifically comprises the following steps of: constructing a basic database; acquiring dynamic data by the data acquisition unit in real time; comparing real-time road condition parameters with safe road condition parameters by the data processing unit to generate early warning information; and transmitting the real-time road condition parameters and the early warning information to a monitoring center by the wireless communication module. According to the system and the method, the defects of the conventional fixed monitoring system and patrol vehicle can be made up, real-time detection and analysis of the highway road condition parameters are effectively improved, and the highway operation safety level and the emergency management capacity are improved.

The invention discloses a modular multi-connection control method and system. The control method comprises the following steps: determining the auxiliary engine capability requirement according to the total capability requirement of an indoor machine set and the best load point of a main engine; calculating the total number of the auxiliary engine compressors required to be input for the operation of the system according to the output capability of a single auxiliary engine compressor; and distributing the total number of the auxiliary engine compressors required to be input for the operationon average to each auxiliary engine, and distributing the parts which can not be distributed on average in each auxiliary engine one by one. According to the invention, through calculating the numberof the compressors required to be operated, the capability output of an outdoor machine set is basically and uniformly distributed to the main engine and each auxiliary engine of the outdoor machine set, the main engine and parts of auxiliary engine compressors are prevented from operating for a long time, the service life of each compressor of the whole machine set is prolonged, and the load energy efficiency ratio of the system part is improved greatly.

The invention relates to a method for analyzing the risk of closed loop operation in a power system, comprising the following steps: (1) acquiring an online power grid model and a data section; (2) setting a closed loop operation point; (3) automatically carrying out topology search of closed loop path in the whole network; (4) calculating the impedance of a closed loop interface; (5) calculating closed loop electric current on line; (6) analyzing and calculating power grid state after a loop is closed; (7) prompting the risk of the closed loop operation: a prompting message indicating whether the closed loop is reasonable or not is provided to the power system for dispatching and to the operating staff for reference based on the result calculated by the closed loop electric current, the closed loop flow and the power grid flow after the loop is closed and the topology search result of the closed loop path. Based on the invention, the closed-loop risk can be accurately analyzed so as to prompt the operating staff to avoid the false operations and ensure the operation safety.

The invention provides an implementing method of an integrated power grid dispatching operation intelligent mistaken-early-warning preventing system. The implementing method comprises the following steps that various information and computing resources required by an operation ticket system in an EMS system of a dispatching center are packaged into standardized service; the operation ticket system is integrated a DMIS system of the dispatching center, and a graphic platform is built according to the CIM and SVG standard; an intelligent ticket-making expert rule base based on an operation model is built, and a safe mistake preventing system based on operation term analysis and comprehensive instruction analysis is built. The implementing method has the advantages of having little influence on the EMS system, being beneficial for popularization and the like, and can improve billing efficiency and circulation speed of dispatching operation tickets. During equipment maintaining peaks in spring and autumn, equipment operation safety is guaranteed, rapidness of equipment operation is guaranteed, work efficiency and the production and management level of the power grid are improved, prevention of large-area power outage accidents is facilitated, and safe production of an electric power company is guaranteed.

The invention relates to the field of wisdom traffic information management and provides a 3DGIS+BIM-based road network operation comprehensive monitoring management platform and method. The platform comprises a 3DGIS+BIM fusion interactive application module, and a server module, a cloud service module, a video and event monitoring module, an electromechanical device module, a VR interactive module, a communication module, an emergency plan response module and a management and maintenance data analysis prediction module connected with the 3DGIS+BIM fusion interactive application module; the platform further comprises a data collection and transmission module and a sensor module; and the video and event monitoring module, the electromechanical device module and the sensor module are all connected with the server module through the data collection and transmission module. According to the platform and the method, comprehensive mastering of operation dynamic information can be effectively guaranteed; an emergency event can be timely discovered, quickly responded and effectively linked and handled, so that the management efficiency is greatly improved, the energy is saved, and the operation security is ensured; and in combination with the electromechanical device and control modules, operation management is orderly carried out, and intelligent and efficient operation management is achieved.

The invention discloses a novel primary frequency-modulation compensation control method of a unit thermal generator set, comprising the following steps of: 1) adding upper and lower limit values according to an instantaneous generation load instruction and primary frequency modulation of the generator set; automatically calculating a primary frequency-modulation theoretical compensation load limited amplitude according to an algorithm module and setting high and low limited amplitudes of an H/L amplitude limiting module; 2) calculating a primary frequency-modulation theoretical compensation load value through a set function F1(x) according to a power grid operation frequency fluctuation difference value or a turbine rotating fluctuation value; and limiting a primary frequency-modulation compensation instruction of the generator set in a range from minus delta P to delta P through guaranteeing that the frequency modulation motion does not exceed the normal adjusting range of the generator set through the H/L amplitude limiting module; and 3) revising primary frequency-modulation compensation and operating a real-time adjusting-grade pressure, a main steam pressure and a main air temperature parameter according to the generator set; and calculating and revising a primary frequency-modulation instruction through a F2(x) to be output. The novel primary frequency-modulation compensation control method of the unit thermal generator set guarantees that the primary frequency-modulation motion of the generator set meets the design requirements and stabilizes a power supply frequency of a power grid.

The invention discloses a system for treating organic exhaust gas by adsorptive-catalytic combustion. The system comprises a pretreatment filter which communicates with and sucks the organic exhaust gas, a main adsorption fan which exhausts the adsorbed exhaust gas and a main fixed adsorbent bed which is connected between the pretreatment filter and the main adsorption fan through a pipe and usedfor adsorbing the exhaust gas; the exhaust pipe of the main adsorption fan is connected with a gas monitoring apparatus which is electrically connected with a control device; the entrance of the mainfixed adsorbent bed is connected with a catalytic bed through a main desorption fan via a pipe; the exit of the catalytic bed is connected with the exit of the main fixed adsorbent bed through a pipe; a temperature sensor in electric connection with a control device is arranged in the catalytic bed; and the main fixed adsorbent bed is connected in parallel with an auxiliary fixed adsorbent bed which conducts an alternative adsorptive or catalytic process with the main fixed adsorbent bed. The invention has the advantages of effectively guaranteeing the treatment efficiency of the organic exhaust gas, replacing manual operation with automatic control and effectively improving the production safety degree, the equipment operation reliability and the economy.

An embodiment of the invention discloses a device for safeguarding operational security of a client side. The device comprises a security part, an unsecure operating system, a secure operating system, a first middleware proxy, a second middleware proxy and second middleware, wherein the first middleware proxy and the second middleware proxy operate in the unsecure operating system, and the second middleware operates in the secure operating system. Client-side applications are installed on the unsecure operating system and directly call first middleware and call the second middleware through the second middleware proxy. Sensitive data in the client-side applications are stored in the security part, the first middleware is used for completing a part of service functions in the client-side applications in the unsecure operating system, and the second middleware is used for completing another part of service functions of the client-side applications by interacting with the security part in the unsecure operating system. According to the embodiment, potential security hazards of operations completed by the client side are reduced or even avoided.

The invention relates to a detecting method for the failure of an automatic air brake system of a train, which comprises the following steps of: receiving and storing a train pipe pressure and a brake cylinder pressure transmitted by a sensor and acquired in a sampling period; obtaining first train pipe pressure and first brake cylinder pressure acquired in the sampling period as well as second train pipe pressure and second brake cylinder pressure acquired before a certain times of the sampling period; and judging whether the brake system is in failure according to the change of the first train pipe pressure relative to the second train pipe pressure and according to the change of the first brake cylinder pressure to the second brake cylinder pressure, wherein failure prompting information is output when the brake system is judged to be in failure. Correspondingly, the invention also relates to a detecting device for the failure of an automatic air brake system of a train, and monitoring and alarming equipment for the braking of the train. When the detecting method, the detecting device and the monitoring and alarming equipment are adopted, the online detection on the failure of the automatic air brake system of the train can be realized in real time, and the reliability and the accuracy of the detection result can reach a higher level.

The invention discloses a PKI (Public Key Infrastructure) implementation method based on a safety certificate. The method comprises the following steps of: deploying an encryption card or encryption equipment hardware equipment on the end part of a CA (Certificate Authority); encrypting all final entity CA certificates in the CA into a cipher text for storing; storing each middle-class CA certificate and root CA certificate in a CA encryption card or a chip of the encryption equipment; generating a key in a safety protocol of the PKI and calling the key to encrypt or decrypt the certificate in the chip; establishing a 'chip-class' PKI safety protocol between a user terminal and a CA terminal; establishing a certificate safety detection protocol in the CA; and detecting the CA certificate in a full trusted link in the CA timely to prevent an attacker from tampering the CA certificate to establish a PKI system based on the safety certificate.

The invention discloses an orderly charging control method, controller and system. The orderly charging control method is suitable for direct-current charging piles and includes: and includes: acquiring real-time load of a station transformer, real-time charging demanded power of vehicles and real-time running condition of the charging piles; on the premise that the load of the station transformerdoes not exceed a limit, formulating an orderly charging strategy, and issuing the same to the charging piles, wherein the orderly charging strategy includes: charging the vehicles according to preset priority and preset output power of the charging piles if total charging demanded power of the vehicles does not exceed current residual power of the station transformer; when the total charging demanded power exceeds the current residual power, the charging piles with higher priority work at full power in a prioritized manner, and the charging piles with lower priority charge through power smooth adjusting. By the method, orderly charging of electromobiles is realized, and matching between charging load of the electromobiles and power supply capacity of a power distribution network is realized through orderly charging control by utilizing the characteristic of energy-type load of the electromobiles, so that power supply of the electromobiles and running safety of the power distributionnetwork are ensured.

The invention provides a braking force distribution method and device for multiple units. The method comprises acquiring a target braking force of an entire train at present, wherein the target braking force of the entire train is the maximum braking force required to stop the entire train; acquiring a braking force capability value that can be applied by each unit of the entire train at present, wherein the braking force capability value of each unit includes a sum of an electric braking force and an air braking force that can be applied by all bullet trains and trailers in the unit; according to the target braking force and the braking force capability value of each unit at present, distributing a braking force target value of each unit on the basis of the load ratio of each unit, wherein the sum of the braking force target values of all the units is equal to the target braking force. By applying the method, the situation that the braking force difference between the units is too large when the bullet train or the trailer in a certain unit fails is avoided, so that the safe operation of the train is guaranteed.

The invention relates to a system and a method for managing timing sequences of high-low voltage power-on and power-off of plug-in hybrid electric vehicles. The system comprises a vehicle control unit VCU, a flat-motor controller ISU, a drive-motor controller TMU, a low-voltage power-on switch KL.15, a high-voltage power-on switch KL.50, a compressor controller ACP, a direct-current converter DCDC, an electric-oil-pump controller EOP, a positive main contactor PMC, a negative main contactor NMC, a pre-charge contactor PCC and a battery management unit BCU. High-low voltage power-on and power-off control strategies of a vehicle power system are completely realized by the VCU. The system and the method have the advantage that both personal safety and operation safety of electric loads can be guaranteed before or after high-voltage power-on and power-off of a vehicle, and power system failure caused by power-on and power-off timing sequence disorder is avoided.

The invention discloses an ice-melting heating structure of a wind driven generator blade. The ice-melting heating structure is characterized in that the wind driven generator blade is provided with a carbon crystal film heating device; the carbon crystal film heating device comprises a carbon crystal electrothermal film, temperature sensors and a heating controller; the carbon crystal electrothermal film is laid on an ice-coated zone of the front edge surface of a shell and used for heating the ice-coated zone of the front edge of the shell so as to achieve ice melting and icing prevention; the temperature sensors are arranged under the carbon crystal electrothermal film, correspond to the ice-coated zone, and are used for detecting the temperature of the ice-coated zone of the front edge of the shell; and the heating controller is arranged in a wind driven generator control system and is used for adjusting the heating electric power of the carbon crystal electrothermal film according to the temperature, detected by the temperature sensors, of the ice-coated zone of the front edge of the shell, so that the temperature of the ice-coated zone of the front edge of the shell is constantly kept at a set value, and the set value is slightly greater than the melting point of ice and is normally higher than zero DEG C but lower than or equal to two DEG C. A lightning protection device is further arranged, so that the blade is protected against a lightning stroke.

The invention discloses a rail health state dynamic monitoring and analysis method. The method comprises the following steps: mounting signal collection hardware to a bogie of an operating train; ensuring that the signal collection hardware collects rail health state information during the operation of a train; analyzing collected rail health state data through a data analysis software; ensuring that data analysis software is loaded in a computer mounted in the body of the operating train or loaded in a cloud server. A loaded type rail health state dynamic monitoring and intelligent analysis system integrates devices, such as an inertial navigation system component, an ultrasonic flaw detection component, a laser displacement sensor, a laser silhouette sensor and a line-scan digital camera, in a modular manner, is loaded in the operating train, dynamically collects various rail health state dynamic parameters including rail dynamic geometrical shapes and positions, vehicle body accelerated speed, rail defect, and sleeper and fastener defect, at high frequency within operation period, realizes operation and detection integration, and accurately and finely guides rail maintenance.

The invention relates to a high voltage grid monitoring method and comprehensive monitoring system based on a wireless sensor network, aims at effectively monitoring the state information and the natural physical information of a piece of electric network equipment, and has the characteristics of being high in monitoring efficiency, low in monitoring cost as well as safe and reliable. The technical scheme is that: the high voltage grid monitoring method based on the wireless sensor network comprises the steps of: monitoring the high voltage grid by a plurality of wireless sensors positioned at various places in the high voltage grid, transmitting the measured information to sensor cluster heads and sink nodes in sequence, and transferring the measured information to a server and a plurality of remote client ends through an optical cable by Internet. The high voltage grid comprehensive monitoring system based on the wireless sensor network comprises a plurality of wireless sensor nodes positioned on the high voltage grid, the sink nodes for reception of information, the server for communicating a gateway with each sink node and the plurality of remote client ends, wherein a sensor cluster head for information transmission is arranged in each wireless sensor node, respectively.

The invention discloses a power use information acquisition system which is used for the intelligent power grid field. The acquisition system comprises a system master station, an acquisition end, and a communication channel connecting the system master station and the acquisition end, wherein the operating system of the system master station is a Linux operation system; an internal local area network is built in the system master station, and a P2P protocol is adopted as the transmission protocol of the internal local area network; the system master station comprises a prepositive information acquisition platform, an application server and a database server, the database server is connected with the prepositive information acquisition platform and the application server respectively, and the prepositive information acquisition platform comprises communication interface machines and prepositive information acquisition servers which are sequentially connected; and the prepositive information acquisition servers are connected with the database server, and the communication interface machines are connected with the prepositive information acquisition servers and isolate the system master station from the communication channel.

The present invention relates to vehicle fittings. The carbon fiber reinforced slide plate for pantograph of electric locomotive is manufactured with graphite, electrolytic copper powder/copper fiber as conducting stuffing, carbon fiber as reinforcing material and heat resisting modified phenolic resin as adhesive and through hot pressing. It has excellent friction performance, long service life, few wear of contacted wire, excellent mechanism performance and impact strength as high as ten times that of metal soaked carbon slide plate. The manufacture process has low cost, low power consumption and short period. The carbon fiber reinforced slide plate may be used in pantograph for rail transportation.

The invention discloses a double-turbine interaction type ventilation and power generation dual-use machine, belonging to the technical field of new energy. The double-turbine interaction type ventilation and power generation dual-use machine comprises two turbine type spherical wind wheels, the two turbine type spherical wind wheels are respectively arranged on two outer rotors of a coaxial power generator, a spindle is fixed in a rack, and a wire is respectively connected with the coaxial power generator, a control box or a lighting resistor, a load, a photovoltaic battery and a fan. The double-turbine interaction type ventilation and power generation dual-use machine is characterized in that the two turbine type spherical wind wheels comprise a plurality of arc-shaped blades, the second wind wheel is arranged in the first wind wheel, the fan drives indoor air to rapidly rise in a spiral way to push the second wind wheel to rotate anticlockwise, air discharged from clearances of the arc-shaped blades pushes the first wind wheel to rotate clockwise, and the two wind wheels respectively drive the two outer rotors to rotate in different directors for power generation. The exhaust direction of air flow for indoor ventilation can be changed and isolated, the defect of mutual offset of two types of air flow caused when the volume of outdoor natural wind is larger than the volume of the indoor rising air flow, and the rate of utilization of wind energy and the ventilation performance can be improved, the all-weather operation can be achieved, and the power generation efficiency can be improved by more than one time.

The invention relates to a civil aviation air traffic control scene monitoring and guiding system. The system comprises a monitoring positioning device which collects and sends multi-point positioning monitoring information and video positioning monitoring information of scene traffic targets in real time; an application processing device which carries out association and identification integrated processing on the multi-point positioning monitoring information and video positioning monitoring information through combination of the information of an external system, thus obtaining the comprehensive monitoring information of the scene traffic targets, the warning information of the scene traffic targets, the conflict extrication suggestions of the scene traffic targets and the three-dimensional models of the scene traffic targets; and a user terminal device which comprehensively displays the scene traffic and integrally displays the comprehensive monitoring information of the scene traffic targets, the warning information of the scene traffic targets, the conflict extrication suggestions of the scene traffic targets and the three-dimensional models of the scene traffic targets. According to the system, the problem that the regional monitoring precision of a parking apron is low is effectively solved through adoption of a multi-point positioning device and a video positioning device, and the scene region of the airport is monitored seamlessly.

The invention discloses a synthesis loop for the running test of a converter valve for a direct current power transmission project. The loop comprises a high-voltage power distribution system, a current source subsystem, a voltages source subsystem, an impact test subsystem, a short-circuit test subsystem, an alternating current filtering subsystem, a control protection system and an auxiliary system, wherein the auxiliary system comprises a low-voltage power distribution system, a water cooling system and a test parameter measuring system. The subsystems are integrated into one loop through reasonable circuit design, so the subsystems can be matched with one another to perform the running test of the converter valve; the loop has a simple structure and runs stably; and due to the control protection system, the running safety of the whole synthesis loop can be ensured, the service life of equipment is prolonged and failure rate is reduced. The synthesis loop can meet the requirement of the running test of the converter valve for the direct current power transmission project of +/-800kV/5000A and below; and tests prove that the synthesis loop can completely meet the requirement of all running test projects of a high-voltage direct current power transmission thyristor valve in the IEC60700-1:1998/GB/T 20990.1-2007 standard.

The invention discloses a smart grid information transmission safety protection device and a safety protection method, which relate to the technical field of smart grid information transmission safety. The device comprises a certificate server, an encryption and decryption module, a compliance check module and an exception handling module, wherein the encryption and decryption module is wholly serially connected between a station level and a bay level for carrying out encryption signature and signature verification decryption functions on original transparently-transmitted data; the compliance check module grabs a plaintext data packet in an offline or online mode and submits the plaintext data packet to the detection module for compliance check, and as for a compliance message, an analysis result is stored to a log database in a log format; and exception information is independently stored in an exception database through the exception handling module, and an administrator is notified. In the case of permissible delay in the smart grid, the encryption and decryption module together protects the internal information of the smart grid, behaviors that the internal data are tampered and destructed in the case of transmission are resisted, and the safety of the grid is further improved.

The invention provides an autonomous scheduling method and system for a train. A simulation module receives rail transit data and simulates an actual rail transit system; the simulation module and a deep reinforcement learning module perform interactive training; the deep reinforcement learning module obtains a trained scheduling decision model; the deep reinforcement learning module transmits thetrained scheduling decision model to a scheduling scheme module; the simulation module simulates a current train running state and outputs the current train running state to the scheduling scheme module; the scheduling scheme module generates a scheduling scheme based on the current train running state; and the scheduling scheme module transmits the scheduling scheme to the actual rail transit system. The actual rail transit system is simulated through the simulation module; the scheduling model is trained through the deep reinforcement learning module; the deep reinforcement learning moduletrains the scheduling model, so that each train adjusts the operation control strategy of the train according to an operation environment, and therefore, train operation energy consumption and passenger waiting time are reduced on the premise that train operation safety and punctuality are ensured; and the real-time performance and flexibility of scheduling are relatively high.

The invention provides a test device and a test method capable of simulating water pressure in a tunnel. The test device comprises a load loading mechanism, a monitoring system and a counter-force mechanism. The load loading mechanism comprises a plurality of flexible cells and a liquid filling pump, wherein every two adjacent flexible cells are communicated with each other to form a closed structure body fitting a lining ring section, and a liquid filling pipe on one of the flexible cells is connected with a liquid outlet of the liquid filling pump. The monitoring system comprises stressometers, steel bar meters, fiber grating sensors, multi-point displacement indicators, osmometers and joint meters, wherein the stressometers and the steel bar meters are embedded into a lining, the fiber grating sensors are arranged on the inner and outer surfaces of the lining, the multi-point displacement indicators, the osmometers and the joint meters are embedded into a surrounding rock, and the signal output end of each sensor is connected with a data acquisition unit. The counter-force mechanism comprises a counter-force H-steel piece and a counter-force supporting piece which are fixedly connected with each other, one side of each flexible cell is arranged correspondingly to the lining ring section, and the counter-force supporting piece supports the other side of each flexible cell. The test device is capable of simulating detection of the concrete lining construction quality and prestress applying effect during operation of the tunnel filled with water.