49results about How to "Multiple reaction time" patented technology

The invention discloses a landing point forecasting system for space launch rocket. According to the invention, the landing point forecasting system is connected to a spaceflight test and control network. Rocket debris and rocket flight position and speed information are extracted from data provided by a radar data processing system. Rocket debris separation time is extracted according to information provided by a remote measurement data processing system. Initial separation point data is obtained through fitting simulation. A rocket debris flight dynamics model is established through combination of flight environment mathematics modeling and aerodynamic characteristics analysis. Through landing point influence factor analysis, landing point accurate forecasting is performed, so that a landing area search range is reduced and rocket debris recycling efficiency is improved.

The invention provides a graphite-phase-like carbon nitride-(110) crystal face bismuth vanadate Z-type heterojunction photocatalyst and a preparation method and application thereof. The method comprises the following steps of 1, preparing exposed (010) crystal face BiVO4 powder and H2SO4 modified g-C3N4 powder; 2, adding the exposed (010) crystal face BiVO4 powder into water, and conducting ultraviolet illumination; dissolving the modified g-C3N4 powder into water, and conducting ultraviolet illumination; 3, adding a BiVO4 solution after ultraviolet treatment into a g-C3N4 solution which is subjected to ultraviolet illumination and negatively charged to obtain a precursor solution, and conducting ultraviolet illumination on the precursor solution to obtain g-C3N4-(110) crystal face BiVO4Z-type heterojunction photocatalyst powder. The catalyst enlarges the response range of visible light, reduces the recombination rate of electrons and hole pairs, improves the separation efficiency of charge carriers and improves the photocatalytic performance of the BiVO4-based composite photocatalyst.

The invention relates to a real-time risk early warning system for a no-signal control intersection of a trunk highway, and belongs to the technical field of road safety early warning. The early warning system comprises a plurality of distributed wireless early warning units, which comprise a logic controller, a power supply module, VMS early warning signs, a vehicle detector group and a wirelessdigital transmission communication module. The real-time risk early warning system for a no-signal control intersection of a trunk highway provided by the invention comprehensively considers the interaction relationship of the traffic flow between the secondary line and the main line near the intersection, lays the VMS early warning signs at the fixed distance between the main line and the secondary line by adopting priority warning concept, and dynamically displays early warning messages according to the vehicle passing information detected by the lane to warn the vehicles to enter the intersection in advance, so as to buy more reaction time for the drivers, thereby greatly reducing the probability and severity of accidents, and also reducing the risk of driving without signal-controlledintersections.

The invention discloses a silver/bismuth vanadate/carbon nitride heterojunction photocatalyst as well as a preparation method and application thereof. The method comprises the following steps of: step1, adding BiVO4 powder with an exposed (010) crystal face into deionized water, performing uniform mixing, carrying out ultraviolet irradiation, adding AgNO3, carrying out uniform mixing under ultraviolet irradiation, sequentially washing and drying precipitates to obtain Ag/BiVO4 powder; uniformly mixing melamine, an HNO3 solution and ethanol, drying the mixture by distillation, calcining the obtained precursor twice, and uniformly mixing the obtained powder in deionized water; and step 2, uniformly mixing the Ag/BiVO4 powder in the deionized water, carrying out ultraviolet irradiation, andsequentially washing and drying the powder to obtain the silver/bismuth vanadate/carbon nitride heterojunction photocatalyst. A photo-selective deposition method is adopted, so that the photo-responserange of the catalyst is enlarged, the separation efficiency of carriers is improved, the recombination rate of electrons and hole pairs is reduced, and the effective photocatalytic activity of heterojunctions is realized.

The invention discloses a thermal runaway early-warning method and early-warning fire-fighting system for a lithium ion battery for energy storage, and belongs to the technical field of thermal runaway of lithium ion batteries. The thermal runaway early warning method for the lithium ion battery for energy storage comprises the steps that a temperature sensor detects the temperature T in a single battery, a gas sensor detects the concentration of hydrogen, the concentration of carbon dioxide, the concentration of carbon monoxide, the concentration of methane, the concentration of ethylene, the concentration of ethane and the concentration of smoke and sends the concentration to a main control unit, and the main control unit conducts judgment; and the thermal runaway early-warning and fire-fighting system for the lithium ion battery for energy storage comprises a characteristic acquisition device, a main control unit, an alarm device and a fire-fighting device, the characteristic acquisition device detects battery thermal runaway characteristic parameters and sends the battery thermal runaway characteristic parameters to the main control unit, and the main control unit controls the alarm device and the fire-fighting device to work according to a thermal runaway early-warning method for the lithium ion battery for energy storage. The thermal runaway early-warning method and early-warning fire-fighting system for the lithium ion battery for energy storage can perform early warning on the dangerous stage of the thermal runaway process of the battery.

The present invention relates to a wind turbine generator power control method and system based on virtual inertia simulation. The method comprises: determining an output power of a wind turbine generator according to a real-time frequency of the power grid; and adjusting a real-time output power of the wind turbine generator to be an output power of the wind turbine generator. According to the technical scheme of the present invention, without affecting the wind power generation benefit, by setting the selection function and the parameters thereof, the wind turbine generator only responds tothe dynamic change of the system frequency, and the equivalent moment of inertia provided by the wind turbine generator for the system is increased; under the circumstance of system faults or disturbance, the wind turbine generator can block the excessive change of the frequency, raise the low point of the frequency change, and provide the reaction time for the other unit to perform primary frequency modulation; and at the same time, the problem of the secondary power drop caused by the primary frequency modulation of the wind turbine generator is avoided, and anti-disturbance of the system against the fast change of the power supply and load, and frequency stability of the high proportion wind power system are improved.

The invention provides a runway intrusion early warning method, a terminal and a storage device, and the method comprises the steps: S101, obtaining digital audio information for controlling and commanding air-ground communication, and recognizing the digital audio information as text information through a voice recognition engine; S102, acquiring instruction elements in the text information according to the keyword dictionary, acquiring security data through the instruction elements, and acquiring flight plan dynamic information; S103, performing rule check on the security data and the flight plan dynamic information according to the business rule, judging whether a rule check result meets an early warning condition or not, if yes, sending an early warning signal, and if not, executing S101. According to the invention, fusion processing and cross verification can be carried out on the electronic process list of the control tower and the voice recognition data of the key instruction, the early warning accuracy is improved, early warning can be realized, more response time is won for a unit and a controller to take measures, and the safety margin is increased.

The invention relates to a combustible gas alarm device and belongs to the technical field of gas detection devices. The combustible gas alarm comprises a detecting main body, a ball screw slide table, an anti-static connecting sheet, a gas sensor, a sensor anti-static slide rail seat, and an alarm; the detecting main body comprises a shell, a controller and a detector, wherein the controller andthe detector are both disposed inside the shell, and the detector is electrically connected with the controller; the ball screw slide table includes a driving mechanism, a slide seat and a slider, wherein the driving mechanism can drive the slider to move back and forth along the slide seat; the gas sensor is electrically connected with the detector; the gas sensor and the slider are connected bythe anti-static connecting sheet; the anti-static connecting sheet passes through the sensor anti-static slide rail seat and can slide on the sensor anti-static slide rail seat; and the alarm is electrically connected with the controller. The combustible gas alarm can detect the abnormal conditions of a combustible gas more quickly, and can give out an alarm earlier than a general alarm.

The invention relates to an intelligent anti-pinch system for an automobile door. The intelligent anti-pinch system for the automobile door comprises a vehicle-mounted control system, a vehicle-mounted voice output device and a laser detection device, and the vehicle-mounted control system is in communication connection with the vehicle-mounted voice output device and the laser detection device; the laser detection device comprises a laser signal transmitting device and a laser signal receiving device, the laser signal transmitting device is arranged on an automobile door frame body, and the laser signal receiving device is arranged on the inner side of the automobile door and used for receiving laser signals transmitted by the laser signal transmitting device in real time and transmittingthe laser signals to the vehicle-mounted control system; and the vehicle-mounted control system is used for judging whether foreign matter exists between the automobile door frame body and the automobile door or not according to the received laser signals and reminding a driver through the vehicle-mounted voice output device. According to the intelligent anti-pinch system for the automobile door,the driver reacts quickly when the anti-pinch system reminds the driver; and in addition, the vehicle-mounted control system can decrease the speed of the automobile door closing action through an air cylinder, and more reaction time is provided for the driver.

The invention relates to a light and adjustable infrared vehicle-mounted wide-angle lens, which comprises a negative meniscus lens A, a positive meniscus lens B and a double-convex lens C, wherein the three lenses are successively arranged from left to right in the incident direction of light rays. The air space between the negative meniscus lens A and the positive meniscus lens B is 14 mm. The air space between the positive meniscus lens B and the double-convex lens C is 7 mm. The invention also relates to a working method of the light and adjustable infrared vehicle-mounted wide-angle lens. The advantages of compact structure, high transmittance and the like are realized. During the optically designing process, the focal power is reasonably distributed and the temperature-adaptive optical athermalization is realized. The wide-angle lens can be matched with a long-wave infrared non-cooling type 320*240 and 20 mum detector to execute recording and security monitoring tasks.

The invention discloses a highway sharp turn warning indicator which comprises a supporting assembly and a warning assembly, wherein the supporting assembly comprises a base, a supporting column arranged at the top of the base, a mounting box arranged at the top of the supporting column and a control box arranged on the side surface of the mounting box; and the warning assembly is arranged outside the mounting box and comprises a display screen arranged on the side surface of the mounting box, a fixing piece arranged on the side, which is close to the mounting box, of the display screen, a through groove formed in the top of the mounting box, a movable disc arranged in the through groove and an alarm lamp arranged on the top of the movable disc. According to the invention, a driver is reminded through the display screen, a loudspeaker, an alarm lamp and other warning devices at the same time, then the warning device can be rotated when a vehicle passes through a sharp turn through the arrangement of a transmission assembly, the attraction of the warning device to the driver is improved, the driver can have more response time, and the accident occurrence rate is greatly reduced.

The invention discloses an acousto-optic reminding type pipe joint for a stainless steel pipe, and belongs to the technical field of pipe joints. Through the arrangement of an acousto-optic reminding part, when the joint of the pipe joint and the stainless steel pipe has a leakage phenomenon, a water guide ring and a reminding water guide rod can suck and guide part of leaked water to an expanding agent, so that the expanding agent absorbs water to expand; therefore, adjustment in the acousto-optic reminding piece is triggered, the reminding whistle makes a sound, and part of the reminding rod extends out of the reminding adjusting box, so that workers can be reminded in an acousto-optic combined mode, the related workers can find the leakage phenomenon of the pipe joint in time, and the working efficiency is improved. According to the invention, the self-adjusting sealing element is arranged, so that a worker is prompted to carry out corresponding treatment in time, the waste of water resources can be effectively reduced, the leakage at the joint can be avoided, the self-adjusting sealing element can be correspondingly adjusted, the joint can be sealed to a certain extent by the annular elastic bag, and the water leakage is reduced to a certain extent.

The invention discloses an overspeed protection and flow control method based on a pumped storage power station. The method integrally adopts a flow control system, the flow control system comprises a navigation channel analysis module, an overspeed analysis module and a pumped storage module; the navigation channel analysis module is used for observing passing ships of a navigation channel of the pumped storage power station; the overspeed analysis module is used for detecting the abnormal temperature rise condition that the rotating speed of a water turbine is too high; the pumped storage module is used for pumping water from a downstream reservoir to an upstream reservoir through a pump turbine set and storing energy in the form of potential energy; the channel analysis module comprises an image collection module, a data set comparison module and a distance analysis module; the overspeed analysis module comprises a temperature detection module and a temperature difference analysis module; the pumped storage module comprises a water turbine load module and a power distribution module; and the temperature difference analysis module is electrically connected with the power distribution module. The method has the advantage that the water pumping amount of a hydropower station is adjusted according to the number of ships.

The invention provides an auxiliary traction device. The auxiliary traction device comprises a support, a traction piece, a linkage structure, a limiting piece, an elastic tension structure and a pay-off device, the traction piece and the linkage structure are rotationally arranged on the support, the limiting piece is fixedly installed on the support, and the elastic tension structure is connected with the linkage structure. According to the auxiliary traction device, when the pay-off device rotates reversely, a traction line cannot directly pull a lesion and needs to be buffered by a traction rod, if the number of reverse rotation turns of the pay-off device is large, the traction rod can rotate by a larger angle towards the working position to buffer the pulling force of the traction line, in other words, due to the existence of the traction rod, the traction line does not suddenly act on a lesion with a relatively large force, but is gradually and slowly increased, so that the operation difficulty is reduced, and more reaction time is provided for an operator; and when in use, the auxiliary traction device can be placed on one side of an operating table, the doctor operates the pay-off device to rotate reversely while observing lesions, and after the pay-off device is operated to stop after the pay-off device reaches a proper position, the optimal traction position and traction force can be adjusted.

The invention relates to the technical field of paper processing, in particular to a leveling device for a toilet paper rewinding machine. Compared with the prior art, a cylindrical gas pad is arranged in the scheme, the length of the gas pad is the same with that of a paper picking-up rod, gas is inflated into the gas pad, the gas pad is arranged on the paper picking-up rod in a sleeving manner and is fixedly connected with the paper picking-up rod, a magnet part in sliding connection with a guide rod and an electromagnet fixedly connected with the guide rod are arranged on the guide rod, the magnet part is fixedly connected with one end of the paper picking-up rod, the paper picking-up rod is arranged in the horizontal direction, a gas pressure inductor is further arranged in the gas pad, and is electrically connected with a current controller outside the gas pad, and the current controller is electrically connected with an electric appliance. The problems that in the prior art, in the rewinding and slitting process, due to sudden tightening of paper, paper is prone to breakage, and the production cost of an enterprise is increased are solved.