43results about How to "Reduce the frequency of accidents" patented technology

The invention provides a variable speed wind turbine generator frequency control method based on dynamic standby power. The method comprises the following steps that I, a frequency modulation operation strategy of a variable speed wind turbine generator is determined according to operation conditions of the variable speed wind turbine generator; II, whether the variable speed wind turbine generator participates in system frequency modulation or not is judged; III, whether the rotating speed of the wind turbine generator is out of limit or not is judged; IV, an active frequency control module is activated, and an active power set value of the wind turbine generator is modified; V, control over the system frequency is achieved. The variable speed wind turbine generator frequency control method based on dynamic standby power can achieve frequency modulation capability of the wind turbine generator in a full wind speed region, when participating in the system frequency modulation to provide active support, the wind turbine generator is not affected by the operation conditions, and therefore electric system frequency stability is improved.

The invention discloses an automatic loss assessment method and system for automobile appearance on the basis of a deep neural network. A mobile phone shoots the long-shot / medium-shot photo of an accident automobile, automobile and automobile assembly component detection is carried out on the long-shot / medium-shot photograph in real time, according to an automobile and automobile assembly component detection result, a user is confirmed to shoot in a proper distance, and the user is prompted to shoot a first local automobile photo; the mobile phone continuously shoots the detail photo of the accident automobile, and a damage area in the detail photo is detected in real time; when the damage area is detected, the user is prompted to shoot a first detail photo; after the photo finishes beingshot, the user is continuously prompted to approach to shoot the area, when the damage area is detected again, the user is prompted to shoot a second detail photo, after the second detail photo finishes being shot, a current damage unit is submitted; and a background server carries out damage identification on each group of damage units submitted from the mobile phone, and the identification results of multiple groups of damage units are combined to obtain the damage details of the accident automobile.

The invention discloses a gas pipeline leakage point detection device and a detection method, and relates to the field of gas pipeline detection. The gas pipeline leakage point detection device comprises a sensor module, a data transmission module, a fixed IP line, a server, a gas pipeline leakage alarm management system and a management computer. The sensor module acquires flow data, pressure data and infrasonic wave data of a gas pipeline. The data transmission module is connected with the sensor module. The fixed IP line is connected with the data transmission module. The server is connected with the fixed IP line, and the flow data, the pressure data and the infrasonic wave data are uploaded to the server through the data transmission module and the fixed IP line. The gas pipeline leakage alarm management system is installed in the server, receives, calculates and analyzes the flow data, the pressure data and the infrasonic wave data, shows the gas running state and gives an alarm.The management computer is connected with the server and used for managing the gas pipeline leakage alarm management system. By the adoption of the gas pipeline leakage point detection device and thedetection method, gas feature graphs of different road sections are provided, the number of influence factors such as the environment is reduced, the false alarm rate of gas alarms is reduced, and the detection accuracy and the alarm efficiency are high.

The invention discloses an intelligent industry patrol mining instrument, a patrol mining system and an intelligent patrol mining method based on radio frequency identification, wherein, the intelligent industry patrol mining instrument comprises memory modules, interface modules, clock modules and a microprocessor CPU of a display and touch screen circuit; the CPU is connected with a frequency identification circuit module through a voltage conversion circuit; the frequency identification circuit module can identify corresponding radio frequency electronic tags pasted on the equipment to be treated with patrolled mining. The intelligent patrol mining system comprises an upper management system and n intelligent industry patrol mining instruments and equipment groups to be treated with patrol mining; each machine of the equipment groups to be treated with patrol mining is pasted with a radio frequency electronic label; the upper management system is provided with an upper management machine and a database server for managing and scheduling the whole patrol mining task, information data of storing equipment groups and historical patrol mining data; the intelligent patrol mining instrument integrates with patrol mining software system and matches with the upper management system software of the upper management machine and the database server to finish the industry patrol mining task.

The invention discloses a yarn guiding device for textile machinery yarn. The yarn guiding device comprises a fixed frame and a yarn guiding frame; the yarn guiding frame comprises an arc-shaped rotating plate and an arc-shaped fixed plate; an upper pressure roller is arranged at the right end of the arc-shaped rotating plate, and the left end of the arc-shaped rotating plate is connected with anadjusting air cylinder; a lower pressure roller is arranged at the right end of the arc-shaped fixed plate, and a yarn arranging wheel is arranged on the arc-shaped fixed plate; and a first yarn guiding roller is arranged between the yarn arranging wheel and a yarn leading roller, and a second yarn guiding roller is arranged between the yarn arranging wheel and the lower pressure roller. The yarntransferred from different angles can be led, the yarn is prevented from being broken in the transferring process, burrs and impurities on the surface of the yarn can be removed in the yarn leading process through the design of the yarn arranging wheel, thus the surface of the yarn is smoother and flatter, and the quality of the yarn is improved; and meanwhile, electrostatic friction generated inthe yarn transferring process can be removed through a electrostatic eliminating assembly, and the problems of yarn fault increasing, yarn breaking and flying are reduced.

The invention discloses a disconnected and staggered air-cooling radiator which comprises a substrate, baffles and fin arrays. The radiator is characterized in that the fin arrays comprise a wide-pitch fin group and a narrow-pitch fin group; the baffles are fixed at two ends of the substrate, accommodation space capable of accommodating the wide-pitch fin group and the narrow-pitch fin group is formed between the substrate and the baffles, the wide-pitch fin group and the narrow-pitch fin group are fixed in the accommodation space, and a disconnected area is arranged between the wide-pitch fin group and a narrow-pitch fin group. According to the disconnected and staggered air-cooling radiator, two groups radiating fin arrays with different pitches are arranged, so that the problem of reduced radiating capacities in a flow direction is solved, the substrate mounting face temperature is uniform, the normal operation of a power module is facilitated, and the accident frequency caused by local excess temperatures is reduced; and the processing difficulty is decreased while thermal resistance is met, accordingly, the processing cost is reduced, and the economic applicability is high.

An apparatus for measuring density and pH value of serous fluid processed by wet flue gas desulfurization overcomes defects of the prior art that densimeters and pH value meters are apt to be blocked to result in shut-down of equipments and the like. The apparatus comprises a main pipeline, a densimeter, a pH value meter, a returning passage, connecting flanges and elbows of the returning passage. The main technical proposal is as follows: arranging branched pipes on the main pipeline; adopting the branched pipes to sequentially communicate with a butt clamp motor-operated valve, a diaphragm valve and a support cylinder so as to form a serous fluid circulation loop with the returning passage; arranging communicated wash tub pipes on side walls of the branched pipes and the support cylinder; communicating the densimeter with side walls of branched pipes; and arranging the pH value meter in the support cylinder. The apparatus has proper structure design, can ensure the normal work of the densimeter and the pH value meter in a range of pipeline flow-velocity allowable to the meters, and also can bring convenience for online flushing and maintenance. The apparatus distinctly enhances the accuracy of measured values of the serous fluid processed by wet flue gas desulfurization, thus being beneficial to the standard emission of desulfurized gas and the stability of equipment running, fundamentally eliminating the shut-down of desulfurization equipment and simultaneously prolonging the service life of meters.

The invention provides a landing device for a vertical lifting aircraft and a ship. The landing device comprises a lift-off platform, wherein a plurality of power devices used for driving the lift-offplatform to ascend or descend are arranged on the lift-off platform, and a locking device for locking the aircraft is arranged on the lift-off platform; the locking device used for locking the aircraft is arranged on the lift-off platform; a power cable and a main probe pipe are arranged below the lift-off platform, and a main pull-off cable is arranged in the main probe pipe; and a damping landing frame is further arranged below the lift-off platform. The ship is provided with the landing device. According to the landing device, large impact on a deck when the aircraft lands on the deck canbe avoided, and the landing safety of the aircraft is improved.

The invention relates to a method for displaying multi-item alarm information at a single position of an operation screen. The method for displaying multi-alarm information in a single position of the operation screen comprises the following steps: using HMI system software in GE Company to organize the order of the multi-item alarm information of each device in real time according to the importance; expressing all the chains of the alarm information in a program; and manufacturing the abnormal chain information at a screen position, and selecting the display mode and content according to need. The method for displaying the multi-item alarm information at the single position of the operation screen has the advantages of wide information contents and complete scheme, ensures that an operator directly observes and knows the information contents through the frequently used screen and knows a dispelling method, saves complicated calculation process of searching the program, shortens the accident handling time, improves the equipment operation rate, and guarantees the device safety and smooth operation of the production; and the method is simple, the program is concise, the display screen is clear, and the operating method is easy to grasp.

The embodiment of the invention relates to a vehicle fatigue driving state prompting method, a fatigue monitoring controller, a system and a vehicle. The vehicle fatigue driving state prompting methodcomprises the steps of firstly, receiving a monitoring signal, for a vehicle driver, transmitted by a monitoring camera of the vehicle; secondly, determining a driving state of the driver according to the monitoring signal; and thirdly, when it is found that the driver is in a fatigue driving state, transmitting a first request signal of turning on a danger alarming lamp to a vehicle body controller so that the vehicle body controller turns on the danger alarming lamp according to the first request signal. Therefore, when it is found that the driver is in the fatigue driving state, by turningon the danger alarming lamp, an alarm can be given to surrounding vehicles and pedestrians to reduce accident occurrence rate and guarantee safeties of pedestrians and vehicles.

The invention discloses a traffic sign detection method based on small target feature enhancement. The method mainly comprises the following steps: constructing a traffic sign data set and performing data enhancement; for the small size of a detection target in the data set, a prior frame is obtained by using a K-means + + clustering algorithm, and a nonlinear clustering distance is used; the network structure is optimized in a targeted mode according to the problem that many small targets appear in the data set; according to the problem of serious unbalance of positive and negative samples of data, a loss function of an algorithm is optimized in a targeted manner, and dynamic weighting of a target is realized. According to the method, traffic sign detection is realized in an urban streetscape scene, small target detection recall and precision improvement can be realized by improving a network structure, a loss function and the like of an algorithm, enhancing fine-grained features of a target and the like, and the method has relatively high accuracy on detection of traffic signs with many small sizes.

The invention provides a landing device for a vertical take-off and landing aircraft and a ship. The landing device includes a lift-off platform, and the lift-off platform is provided with a pluralityof power devices for driving the lift-off platform to ascend or descend; power cables and exploring tubes are located below the lift-off platform, pull-down cables are arranged inside the exploring tubes, and shock-absorbing landing gears are further arranged below the lift-off platform; and the lift-off platform includes an upper layer platform, the upper layer platform is located at the upper end of the lift-off platform, and the upper layer platform is provided with a tensioning assembly which is used for pulling the aircraft and the upper layer platform together. The ship is provided withthe landing device. The relatively large impact on the deck when the aircraft lands on the deck can be avoided, and the landing control over the aircraft is simpler.

The invention provides an installation method of an electric hoist hanger, and the method comprises the following steps of placement on the ground, installation of column soleplates, positioning and boring through nodes, ground pre-installation of upright assemblies, hoisting and installation of upright assemblies, installation of a traveling beam and final fixture of the entire hanger. According to the installation method, a majority of work is done on the ground, only a lift truck is used as a hoisting tool, the problem of inaccuracy in positioning in high-altitude operation can be effectively solved, no crane is used, no scaffold is needed, the high-altitude operation time is reduced, the installation quality is effectively controlled, the accidental rate is reduced, and the operation security of operation personnel can be realized; and meanwhile, the investment cost can also be saved, the construction speed is fast, simplicity and convenience in operation can be realized, and the requirements on technology, quality and security can be guaranteed.

The invention relates to the field of automatic control, in particular to a 57mm digitalized figure antiaircraft gun system. A gun controller (1) of the system is connected with a percussion device (2), a firing angle display (3), a high-low motor (4), an azimuth-drive motor (5), a high-low angle displacement sensor (6) and an azimuth angle displacement sensor (7), the gun controller (1) is connected with an operation control terminal (8) which is connected with a remote command center (9). The remote command center is communicated with the operation control terminal in a remote mode and sends out command information, and after the operation control terminal receives the command information, the gun controller (1) sends out signals to control the percussion device and the firing angle display according to the control commands sent out by the operation control terminal. The gun controller is installed in a digitalized figure antiaircraft gun. The 57mm digitalized figure antiaircraft gun system is high in safety, low in accident occurrence frequency, simple in system control method, high in operation efficiency, capable of controlling figure operation in multiple control modes and wide in application range.

The invention provides a real-time monitoring system for a power transmission and distribution network based on a 4G network and an encryption mode. The real-time monitoring method comprises the stepsthat: a monitoring terminal hoop is installed at a telegraph pole of a power transmission cable, collects internal electrical parameters and external environment data of the power transmission cable,and transmits the collected internal electrical parameters and external environment data to an encryption module; the encryption module encrypts the internal electrical parameters and the external environment data and returns the encrypted data to the monitoring terminal; a 4G wireless communication module transmits the encrypted data to a power server; the power server transmits the received data to an encryption machine, the encryption machine decrypts the data, and the decrypted data is returned to the power server; and the power server obtains final internal electric parameters and external environment data of the power transmission cable so as to judge whether a fault hidden danger occurs on site or not and position, record, alarm and process a fault position. Therefore, unattended all-weather monitoring of the power transmission cable is achieved.

The invention provides an electric locomotive anti-collision system, wherein an electric locomotive is special traction equipment for dragging a coke tank carrier loader or a wet quenching car loadedwith red hot coke to move back and forth between a coke oven and a quenching device. The electric locomotive anti-collision system comprises a detection system and a warning system, wherein the detection system comprises a distribution box, a circuit breaker, a contactor, a relay, a timer, an electromagnetic induction contact and an electromagnet; the electromagnet is arranged at the front end ofthe electric locomotive; the electromagnetic induction contact is arranged on the ground of a lifting area; the circuit breaker, the contactor, the relay and the timer are electrically connected to the distribution box, and the electromagnet and the electromagnetic induction contact are electrically connected with the distribution box; the warning system comprises signal lamps and an audible and visual alarm; the signal lamps are installed above the lifting frames on the two sides of the lifting area; and the signal lamps and the audible and visual alarm are electrically connected with the distribution box. According to the technical scheme, the collision probability between the electric locomotives can be effectively avoided, and the accident occurrence frequency is reduced.

The invention discloses a monitoring mechanism of an ICP high-density plasma etching machine. The monitoring mechanism comprises an etching machine body, a front-and-back moving mechanism is arrangedon the left side of the etching machine body, a left-and-right moving guide mechanism is arranged above the etching machine body, a first left-and-right moving mechanism and a second left-and-right moving mechanism are arranged in an inner cavity of the left-and-right moving guide mechanism, and an etching substrate is fixedly connected to the top of the etching machine body. As the front-and-backmoving mechanism is arranged, the monitoring equipment can move along with the left-and-right moving guide mechanism; therefore, a connecting wire between the monitoring equipment and the second left-and-right moving mechanism does not need to be too long; therefore, accidents caused by winding of the connecting wire are not likely to happen, damage to the etching machine can be reduced, the service life of the etching machine is prolonged, the first left-and-right moving mechanism can be controlled to blow-dry liquid medicine deposited on the etching machine through wind power, the surface of the etching substrate can be rapidly dried, and subsequent use is also facilitated.

The invention relates to a non-energy-consumption road tunnel entrance reflective mirror and belongs to the technical field of road traffic. According to the non-energy-consumption road tunnel entrance reflective mirror, sunlight reflection is utilized to enable light to enter a tunnel entrance, and tunnel entrance illumination can be enhanced. The non-energy-consumption road tunnel entrance reflective mirror comprises a support and a concave mirror, and the concave mirror is mounted on the support and provided with a plurality of small round protrusions. Through the multi-face reflective mirror with large concave and small protrusions, sunlight is reflected to enter the tunnel entrance for enhancing illumination in advance, the defect that an existing lamp on the road tunnel entrance is insufficient in illumination technical brightness is overcome, energy is not consumed, the tunnel entrance can be effectively illuminated, and accident occurring frequency is lowered.

The invention discloses a gantry crane cable fold-back device. The gantry crane cable fold-back device comprises a bottom plate, an upper panel and multiple arc-shaped plates; the bottom plate is arranged obliquely; the upper panel is located above the bottom plate and is parallel with the bottom plate; a gantry crane cable penetrates from space between the upper panel and the bottom plate along the inclination direction of the bottom plate; and the multiple arc-shaped plates are respectively arranged at the left side and the right side of the gantry crane. The arc-shaped plates at the left side and the right side of the gantry crane are fixedly arranged between the bottom plate and the upper panel at vertical intervals along an inclination longitudinal direction; a cylindrical vertical direction adjusting part is fixedly arranged at the back end part of the upper panel; the back end part of the upper panel is fixedly arranged at the outer wall of the vertical direction adjusting part; a fixing device is fixedly arranged in front of the bottom plate; and the gantry crane penetrates from the fixing device and is fastened by the fixing device. The gantry crane cable fold-back device is capable of reducing labor intensity of workers, increasing safety coefficient and improving economic benefits.

The invention discloses a temperature control monitoring device for a fan for assisting in heat dissipation of a high-voltage distribution cabinet. The device comprises a first air switch, a second air switch, a temperature controller, a time relay, an intermediate relay, an indicating lamp, a micro switch and the fan; the fan is connected with the time relay and the temperature controller; the temperature controller is connected with the first air switch and the second air switch; the micro switch is arranged on one side of the fan; one end of the micro switch is connected to the first air switch; the other end of the micro switch is connected to the second air switch through the indicating lamp; the micro switch is further connected with the intermediate relay through the time relay; theintermediate relay is connected to the second air switch; and the intermediate relay is connected with an alarm system. Temperatures in the high-voltage distribution cabinet are acquired through sensors in real time, and operation conditions of the fan for assisting in heat dissipation are monitored through the switches and the relays, so that the accident generation frequency is reduced, and real-time remote monitoring of the temperatures in the high-voltage distribution cabinet and the fan is realized.

The invention provides an integrated chlorine dioxide disinfection machine provided with a contact disinfection area. The integrated chlorine dioxide disinfection machine comprises a disinfection case, wherein the closed contact disinfection area is arranged in the disinfection case, a disinfectant storage area and a metering pump area are formed at the top of the contact disinfection area, a metering pump is arranged in the metering pump area, a disinfectant in the disinfectant storage area is pumped to the contact disinfection area through the metering pump, a plurality of deflection baffles are arranged in the contact disinfection area, a water drain hole is formed in the inner wall of the contact disinfection area where one sides of the deflection baffles are located, a disinfectant feeding hole and a sewage inlet hole are formed in the inner wall of the contact disinfection area where the other sides of the deflection baffles are located, the disinfectant feeding hole is connected with a pump pipe of the metering pump, the sewage inlet hole is connected with a sewage inlet pipe, and the water drain hole is connected with a water drain pipe. The integrated chlorine dioxide disinfection machine cannot cause corrosion of a submersible pump in a disinfection tank, the accident occurrence frequency is reduced, the service life of the submersible pump is prolonged, and the health of a user is guaranteed.

The invention provides a carrier landing device for vertical take-off and landing aircraft and a ship. The carrier landing device comprises a lift-off platform, wherein a plurality of power devices which are used for driving the lift-off platform to ascend or descend are arranged on the lift-off platform; a power cable and an exploring tube are arranged below the lift-off platform, a pull-down cable is arranged in the exploring tube, and a damping landing frame is further arranged below the lift-off platform; and the lift-off platform comprises an upper platform, the upper platform is locatedon the upper end of the lift-off platform, a tensioning assembly is arranged on the upper platform, and the tensioning assembly is used for pulling the aircraft and the upper platform together. The ship is provided with the carrier landing device. According to the carrier landing device, large impact on a deck when the aircraft lands on the deck can be avoided, and the carrier landing control of the aircraft is simple.

The invention discloses a vehicle auxiliary driving method, device and equipment and a storage medium. The method comprises the steps that the target distance between a vehicle and a target obstacle, first driving data of the target obstacle and second driving data of the vehicle are acquired; distance calculation is carried out based on the target distance, the first driving data and the second driving data, and the safety braking distance of the vehicle is obtained; calculating the actual braking distance of the vehicle based on the second driving data; if the actual braking distance is larger than the safe braking distance, third driving data of a first obstacle on an adjacent lane on at least one side of the vehicle and a first distance between the first obstacle and the vehicle are obtained, and the first obstacle is the obstacle, closest to the vehicle, on the adjacent lane; performing calculation processing based on the third driving data, the first distance and the second driving data to obtain a lane change collision result; if the lane changing collision result meets the preset lane changing condition, a lane changing early warning is given out, and a lane changing driving path is provided.

The invention discloses a novel underground gas positioning and monitoring system which is provided with an industrial personal computer (IPC), an optical fiber transceiver, a monitor display, an alarm and a gateway on an above-ground working surface. The interior of the IPC is provided with positioning discriminatory analysis software; the IPC is connected with the monitor display and the alarm to transmit data information; the IPC, the optical fiber transceiver and the gateway connected through optical cables; and a plurality of wireless network base stations, a gas monitor and a coding discriminator are arranged on an underground working surface. The novel underground gas positioning and monitoring system is convenient for two-way information transmission, can effectively prevent accident potentials in time to reduce accident frequency to be the lowest, can track and position mine underground personnel in real time, and clearly master dynamics of the underground personnel at any time, thereby having great practical value.

The invention discloses a conveying device of a feeding system for anhydrous hydrogen fluoride production. The conveying device comprises a pretreatment tank, a prestorage tank, a sulfate acid tank and a reaction converter, wherein a first treating chamber and a second treating chamber are formed in the pretreatment tank; the first treating chamber comprises a cleaning chamber and a dirt collecting chamber; a cleaning barrel and a cleaning device are arranged inside the cleaning chamber; a feed hopper is arranged at the left end of the cleaning barrel; the second treating chamber comprises a drying chamber and a crushing chamber; a crushing device and a screening device are arranged inside the crushing chamber; a second stirring device and a weighing device are arranged inside the prestorage tank; the reaction converter comprises a reaction chamber and a spare chamber. The conveying device is simple in structure and strong in practicality; through cleaning and drying of fluorite, the raw material quality of fluorite powder is improved; the fluorite powder is screened through the screening device, so that the particle size of the screened fluorite powder meets the best reaction requirement, and the quality of a reaction product and the reaction speed rate are further improved; the conveying device is more reasonable in structural design, reduces the energy loss and improves the economic efficiency.

The invention provides an installation method of an electric hoist hanger, and the method comprises the following steps of placement on the ground, installation of column soleplates, positioning and boring through nodes, ground pre-installation of upright assemblies, hoisting and installation of upright assemblies, installation of a traveling beam and final fixture of the entire hanger. According to the installation method, a majority of work is done on the ground, only a lift truck is used as a hoisting tool, the problem of inaccuracy in positioning in high-altitude operation can be effectively solved, no crane is used, no scaffold is needed, the high-altitude operation time is reduced, the installation quality is effectively controlled, the accidental rate is reduced, and the operation security of operation personnel can be realized; and meanwhile, the investment cost can also be saved, the construction speed is fast, simplicity and convenience in operation can be realized, and the requirements on technology, quality and security can be guaranteed.

The invention discloses a small automobile capable of preventing collision. Inflatable safety air bags are arranged on the front end and tail end of the automobile respectively. The air bags are made of rubber and are elastic and restorable; pressure sensors are arranged in the air bags; the pressure sensors transmit signals generated due to pressure increase to a vehicle-mounted computer (engine micro computer) system; and the vehicle-mounted computer system controls a braking system to brake automatically.