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327results about How to "Ensure the safety of life and property" patented technology

Dual-channel disaster early-warning information receiving system and receiving method thereof

The invention provides a dual-channel disaster early-warning information receiving system and a receiving method thereof. The system comprises a mobile phone information preprocessing module, a DAB receiver information preprocessing module, an adapter, a mobile phone and a DAB receiver. The early-warning information receiving method includes a satellite DAB receiving mode and a GPRS short message receiving mode: for an urban region, the mobile phone GPRS short message receiving mode is adopted, a mobile communication network is utilized, an early-warning region is automatically identified according to address area-owning region information, and thereby the mobile phone terminal can select and real-timely and accurately receive early-warning information; and for a rural region, the DAB receiving terminal automatically identifies an early-warning region address code according to the region parameter information of the Compass satellite, and thereby can receive the early-warning information of the remote region. By means of the dual-channel receiving mode, the invention can ensure to the max that the early-warning information of various departments at all levels can be real-timely and accurately received nationwide, thus guaranteeing the safety of lives and properties of people.
Owner:JIANGSU JACK INSTR

Landslide disaster prediction method and device

ActiveCN111210073APredict what will happenForecastForecastingAlarmsSoil scienceRegression analysis
The invention relates to the field of geological disaster risk evaluation, in particular to a landslide disaster prediction method and device. The method comprises the steps: firstly building a digital terrain model, dividing a research region into grids, enabling each grid to serve as a unit, and endowing each unit with needed geological and rainfall distribution information; performing infiltration analysis to obtain pore water pressure; based on the pore water pressure, calculating the safety coefficient by using an infinite slope model, and solving the instability probability to judge theslope stability and reliability; collecting a large amount of historical landslide data, and obtaining an empirical relationship for calculating a landslide movement distance average value through regression analysis; at least one side or one corner of each unstable unit is connected to form a group, wherein one group is regarded as a landslide, the position and the volume of the landslide are determined, the landslide movement distance relation serves as a landslide movement rest condition, the movement track and the accumulation position of the landslide body are evaluated, then the landslide influence range is predicted, and a scientific basis is provided for post-disaster reconstruction and disaster early warning work.
Owner:SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST

Intelligent monitoring and early warning system for creeping landslide

The invention relates to the field of geological disaster monitoring, particular to an intelligent monitoring and early warning system for the creeping landslide. The intelligent monitoring and earlywarning system comprises a server, a sensor and an information transmission part. The sensor and the server form communication connection by the information transmission part. The sensor includes a displacement sensor and a rainfall sensor. The server includes a contingence angle data processing module and an early warning module; the contingence angle data processing module is used for calculating a contingence angle based on displacement data and determining whether to carry out early warning according to the determination of condition that whether contingence angle exceeds a threshold. According to the invention, a landslide forecasting method for acquiring the landslide approaching contingence angle based on a landslide creep constant-velocity deformation rate is employed; and thus thelandslide approaching contingence angle of the landslide can be obtained only by determining the stage and the constant-velocity deformation rate of the landslide, so that the good early warning andforecasting effects for the destruction and unstability of the landslide are realized.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD

Vehicle-mounted detection method fusing vehicle speed information and axle box vertical acceleration information for wheel flats

The invention discloses a vehicle-mounted detection method fusing vehicle speed information and axle box vertical acceleration information for wheel flats, which mainly solves the problems that in the prior art, the existing detection method for wheel flats has the disadvantages of limited application scope, inconvenience in use and maintenance, and higher cost. The method comprises the following steps of: detecting vehicle operating velocity v and vertical vibration acceleration a of a vehicle axle box; carrying out information fusion on the velocity v and the vertical vibration acceleration a of the axle box according to a fusion rule, carrying out feature extraction on the fused data to obtain the vibration performance of the vehicle axle box, and then analyzing the vibration performance of the vehicle axle box when wheel flats exist; and digesting and comparing the obtained vibration performances, building a judgment rule of wheel flats, and then carrying out dynamic detection on wheel flats. Through the scheme, the aims of broader application scope, convenience in implementation and maintenance, and low cost are achieved, and higher practical value and popularization value are realized.
Owner:SOUTHWEST JIAOTONG UNIV

Vehicle-mounted car-backing simulation system

The invention provides a vehicle-mounted car-backing simulation system comprising a vehicle-mounted navigating instrument arranged in a car and a wide-angle camera arranged at the tail of the car and also comprising a speed sensor and an analog-to-digital conversion module which is connected between the wide-angle camera and the vehicle-mounted navigating instrument; the vehicle-mounted navigating instrument comprises an image processing module, an MCU (Microgrammed Control Unit) control module and a display; the MCU control module is used for calculating the position of the car after a set time according to information on the speed sensor and the angle of a steering wheel under a car-backing mode; and the image processing module is used for analyzing and processing environment image information captured by using the wide-angle camera and digitally processed by the analog-to-digital conversion module, overlying the environment image information with the position of the car after the set time, which is calculated by the MCU control module, and simulating the motion curve of the car within the set time on the display. The vehicle-mounted car-backing simulation system can be used for simulating the motion curve of the car within several seconds according to the surrounding environment of the car as well as the car-backing speed and direction and enabling a driver to more intuitively know the car-backing condition and plays auxiliary car-backing and stopping roles.
Owner:SHENZHEN HANGSHENG ELECTRONICS

Automatic grinding machine for wood board processing

InactiveCN107263238AAchieve the purpose of moving up and downRealize moving up and downPlane surface grinding machinesEngineeringPulp and paper industry
The invention discloses an automatic grinding machine for wood board processing, which comprises a fixed installation base, a conveyor belt mounting frame is fixedly connected to the top of the fixed mounting base, and a rotating shaft is rotatably connected to the top of the conveyor belt mounting frame, and the rotating shaft passes through a flat The key is fixedly connected with a gear, and the gear is meshed with a conveyor belt through a transmission rack. A working platform is arranged on the left side of the fixed installation base, and a grinding machine lifting device is arranged on one side of the inner wall of the working platform. The middle part of the working platform An up and down moving device is provided at the position directly below, and the invention relates to the technical field of processing machinery. The automatic grinding machine for wood board processing solves the problem that the grinding machine can grind wood boards of different thicknesses, ensures the quality and efficiency of grinding, improves production efficiency, and saves production costs. The reciprocating device ensures the efficiency and quality of grinding, so that the board will not There is a problem of not polishing well to ensure the safety of workers' lives and properties.
Owner:安吉县瑞旺竹木制品厂

Intrusion prevention system for vehicle-mounted information system

The invention discloses an intrusion prevention system for a vehicle-mounted information system. The intrusion prevention system comprises a power transmission system, an electric power steering system, an electronic stability control system, an instrument panel, a diagnostic system, a vehicle body control system, a sensor, an accelerator, a multimedia system and a vehicle-mounted mobile phone. The power transmission system, the electric power steering system, the electronic stability control system, the vehicle body control system and the multimedia system are connected with the diagnostic system through a gateway, the diagnostic system is connected with the vehicle-mounted mobile phone, the instrument panel is connected with the vehicle body control system and the power transmission system, and the sensor and the accelerator are connected with the vehicle body control system. Compared with the prior art, the powerful calculation capability and storage capability of the mobile phone are utilized, the mobile phone is set as an intrusion prevention center; the formulation of safety regulations, storage of a virus reservoir, the judgment of security situation awareness and the connection with a cloud are all finished through the mobile phone, users' life and property safety is guaranteed, and the intrusion prevention system has popularization and application values.
Owner:CHENGDU UNIV OF INFORMATION TECH

Risk quantitative evaluation method and device for geological disaster chain after strong earthquake

ActiveCN111080136AEasy to buildGood for accuracy verificationResourcesEarthquake disasterData mining
The invention relates to the field of geological disaster risk assessment, and particularly relates to a risk quantitative evaluation method for a geological disaster chain after a strong earthquake.The method includes searching data, acquiring a long-term evolution rule of post-earthquake disasters, establishing spatial database, and respectively quantifying disaster chain risk evaluation, disaster-bearing body evaluation and vulnerability evaluation; and comprehensively and quantitatively evaluating the accumulated risk of the disaster chain according to the quantized values, establishing arisk acceptable criterion model based on an ALARP principle, and grading the potential hazard degree of the comprehensively evaluated accumulated risk of the disaster chain according to the model. According to the method, a set of complete risk evaluation framework system of the post-earthquake geological disaster chain is built, the interaction between disasters can be quantitatively evaluated,the interaction between the disasters and vulnerability of disaster-bearing bodies can also be quantitatively evaluated, the potential risk degree of the disaster chain can be comprehensively and accurately evaluated, and reference is provided for decision making of a post-disaster reconstruction scheme.
Owner:SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST

Sideslip and rollover pre-warning system for vehicles on bridge under crosswind circumstances and method thereof

The invention discloses a sideslip and rollover pre-warning system for vehicles on a bridge under crosswind circumstances. The sideslip and rollover pre-warning system includes a wind speed and wind direction detecting device, a road condition detecting device, and an information processing and intelligence output device. A wind speed and wind direction sensor is arranged in the wind speed and wind direction detecting device. An icing and humiture sensor is arranged in the road condition detecting device. The information processing and intelligence output device is composed of a third microcontroller, a third ZigBee communication module, a third voltage-stabilized source, and an LED display screen, wherein the third ZigBee communication module, the third voltage-stabilized source and the LED display screen are connected with the third microcontroller. According to the sideslip and rollover pre-warning system, the critical speed of vehicle sideslip or rollover is calculated according tothe vehicle strained condition to remind vehicles crossing the bridge to be driven below the speed limit, phenomena of the vehicle sideslip and the rollover when vehicles cross the bridge are avoided, and bridge road traffic accidents are reduced.
Owner:SHANDONG JIAOTONG UNIV

Pull-type anti-hijack device used for saloon car

A pull-type anti-hijack device used for a saloon car solves the problems that an existing transmission mechanism is complex in structure, low in transmission efficiency, inconvenient to operate and the like. The pull-type anti-hijack device used for the saloon car comprises an upper beam assembly, a lower beam assembly and a transmission mechanism assembly, and the upper beam assembly, the lower beam assembly and the transmission mechanism assembly are arranged on the bottom portion of an assembling seat. The technical scheme includes that the transmission mechanism assembly comprise a motor which is fixed on a movable bottom plate, a pawl set and a drag component which is composed of a drive pipe, sliding blocks, transmission ropes, a drive wheel and a driven wheel. The sliding blocks which move along drive pipe guide sliding grooves are hinged with an upper beam and a lower beam through an upper main support rod and a lower main support rod. The drive wheel is fixed on a motor shaft. The transmission ropes which are twined on the drive wheel are fixed in the center holes of the sliding blocks through guidance of the driven wheel. The motor drives the drive wheel to drag the transmission ropes to drive the sliding blocks to move, the upper main support rod and the lower main support rod are enabled to stretch to drive the upper beam assembly to rise, a seat cushion and a back of the seat are enabled to form an inclined included angle to clamp and subdue a scoundrel. The pull-type anti-hijack device used for the saloon car is simple in structure, easy to manufacture, safe and reliable to use, convenient to operate, and further improves transmission efficiency and anti-hijack performance.
Owner:李尚贤

Rail nut loosening detection and maintenance device and method based on CCD camera

The invention provides a rail nut loosening detection and maintenance device and method based on a CCD camera. The rail nut loosening detection and maintenance device comprises a rack, a moving wheelrolling on the rail and a moving motor driving the moving wheel to rotate are arranged at the bottom of the rack, the detection and maintenance device is arranged on the rack, and comprises adjustingmechanisms, nut screwing mechanisms and the CCD camera, the two adjusting mechanisms are correspondingly opposite to two tracks of the rail, the adjusting mechanisms comprise lead screws which are vertically arranged, lifting motors driving the lead screws to rotate and adjusting platforms sliding up and down on the lead screws, the two nut screwing mechanisms are arranged on the adjusting platforms, and are symmetrical relative to the lead screws, the nut screwing mechanisms comprise universal sleeves and rotating motors driving the universal sleeves to rotate, the CCD camera collects bolt images, and sends the collected images to an image treatment module to process the images, a main controller analyzes and compares the information of the bolt images, controls the rotation of each motor, automatically detects loose nuts of the rail and maintains the loose nuts.
Owner:WUHAN UNIV OF TECH

Patrol rescue unmanned plane based on voice signals and operating method thereof

The invention discloses a patrol rescue unmanned plane based on voice signals and an operating method thereof, and belongs to the technical field of security and protection of unmanned planes. The patrol rescue unmanned plane based on voice signals is characterized in that a noise reduction cover is arranged below an unmanned plane housing; a wireless data transmission module, a real-time positioning module and a flight power module are arranged in the unmanned plane housing; a help-seeking voice signal identification module is arranged on the noise reduction cover; the wireless data transmission module, the real-time positioning module, the help-seeking voice signal identification module and the flight power module are electrically connected with a processor; the wireless data transmission module is used for communicating with the unmanned plane and the PC terminal data of a safety control center; weak voice signals are analyzed through a human voice identification module; and the coordinates of help-seeking voice signals are calculated. The patrol rescue unmanned plane based on voice signals can work in complicated terrain areas, such as mountain lands and forests, and the environment that visual sense has obstacles, such as night, haze and cloudy day, can timely discover the position of a help-seeking person, and can timely notify the work staff of the safety control centerto come to rescue the help-seeking person.
Owner:HOHAI UNIV WENTIAN COLLEGE

Double-hull bottom double-hull ship

The invention provides a double-hull bottom double-hull ship, which comprises a double-layer hull bottom and a double-layer hull, wherein a foaming layer is arranged in a gap of the double-layer hull bottom or double-layer hull. Preferably, the double-layer hull bottom and the double-layer hull are made of a plastic material and are integrally molded. According to the double-hull bottom double-hull ship, a rotational molding mode is adopted, the integral molding of the double-hull bottom double-hull ship can be ensured, and the molding is uniform, so that a ship hull can keep balance; and the gap can be formed in the double-layer hull by rotational molding, and can be filled with a foam material. The double-hull bottom double-hull ship has the advantages that the foam layer is arranged in the double-layer hull bottom or double-layer hull, so the safety of the ship hull can be increased; when the double-hull bottom double-hull ship encounters an external force, the foam layer can form buffering, so the safety of the ship hull can be ensured, even if water enters a cabin, the whole ship hull can float on a water surface by virtue of the buoyancy of the foam layer, and life and property security can be ensured; in addition, the double-hull bottom double-hull ship is subjected to rotational molding by adopting plastic, so that the manufacturing cost is relatively low.
Owner:林蝉静

Monitoring method for firefighting space integration of firefighting robot

The invention discloses a monitoring method for firefighting space integration of a firefighting robot, and belongs to the technical field of monitoring. The monitoring method comprises the following steps of: obtaining a geographic position and a geographic environment of firefighting through reconnaissance of an unmanned aerial vehicle, so as to obtain an initial scene; on the initial scene, obtaining a building structure and an indoor structure by the firefighting robot; obtaining operation positions of firefighters, and determining the position of a control center, so as to obtain a final scene; and carrying out monitoring according to the scenes. According to the monitoring method, the geographic position of the firefighting field is acquired and obtained through the control center, marks are made on a map, and the unmanned aerial vehicle carries out reconnaissance around the field according to the map and the marks on the map so as to obtain the field environment. Field information is transferred to the control center, the control center distributes and schedules firefighting robots to carry out firefighting rescue through final settlement, and firefighters are dispatched when necessary. According to the monitoring method, the whole-process real-time monitoring of the firefighting field is realized, the firefighting efficiency is greatly improved, and the life safety of the firefighters and the people are ensured.
Owner:YANGZHOU UNIV

Gas pipe network leakage explosion risk evaluation method and system under geological disasters

The invention discloses a gas pipe network leakage explosion risk evaluation method and system under geological disasters. The invention relates to the technical field of gas pipe network risk evaluation. The problem that leakage occurs due to the fact that the gas pipeline is affected by geological disasters is not considered when the gas pipeline is affected by geological disasters is solved. The method comprises the steps that the position relation lambda between a pipeline and the potential influence range of geological disasters is calculated, and a geological disaster susceptibility index S, a gas pipeline influence possibility index V and a gas pipeline failure consequence index C are obtained through an event chain thought; a geological disaster susceptibility index S of the located area; calculating a vulnerability index V after geological disasters, a gas pipeline failure consequence index C under various gas pipeline leakage disaster-causing modes, and a comprehensive emergency capability evaluation value beta; dividing gas pipe network leakage explosion risk levels under geological disasters; risk conditions in the whole process from geological disaster occurrence to gas pipeline influence, leakage and explosion are accurately mastered, damage and economic loss caused by geological disaster influence are reduced, and life and property safety is ensured.
Owner:ANHUI ZEZHONG SAFETY TECH +3

Long and big subway tunnel longitudinal ventilation and smoke discharging system with mutually-standby smoke discharging air passages at two sides

The invention discloses a long and big subway tunnel longitudinal ventilation and smoke discharging system with mutually-standby smoke discharging air passages at two sides. The system comprises a single-hole tunnel and a middle separating wall, wherein the middle separating wall is used for dividing the single-hole tunnel into double-track tunnels; two end openings of the single-hole tunnel are respectively provided with jet fans; the middle part of the single-hole tunnel is provided with reversible axial flow accident fans which are communicated with tunnels arranged at two sides of the single-hole tunnel through a high temperature flue. According to the system disclosed by the invention, an evacuation strategy for managing in-place personnel evacuation and an operating strategy of a smoke discharging system when a train is forced to stop in a long and big tunnel due to a fire of the long and big tunnel are put forward for the first time; the system has the advantages that the damage to the environment by a partitioned vertical shaft / inclined shaft scheme is well avoided, the construction difficulty, the first investment cost and the operating cost are reduced to a large extent, the arrangement of the mutually-standby smoke discharging air passages which are arranged at the two sides are respectively convenient for reasonably managing smoke gas diffusion, an application range of longitudinal ventilation and smoke discharging can be enlarged on the premise that the ventilation effectiveness and the personnel evacuation safety are ensured, and good economic benefit and good social benefit are obtained.
Owner:TIANJIN UNIV

Fatigue detection method and system for ship pilot, and server

The invention provides a fatigue detection method and a fatigue detection system for a ship pilot, and a server. The fatigue detection method comprises the steps of: receiving a video stream acquired by wearable equipment; converting a plurality of video frames in the video stream into a plurality of pieces of image information; acquiring human eye regions in the plurality of pieces of image information; and carrying out fatigue analysis on the human eye regions in the plurality of pieces of image information so as to judge whether the ship pilot is in a fatigue state, and sending an analysis result to the wearable equipment. According to the fatigue detection method provided by the embodiment of the invention, the video images of the ship pilot are acquired by means of the wearable equipment, thus the influence of various kinds of objective factors can be avoided, and the quality of the acquired video images is guaranteed, thereby improving reliability of fatigue detection of the server. In addition, the ship pilot can be reminded by means of the wearable equipment when in the fatigue state, thereby significantly improving the safety of ship handling by the ship pilot, preventing the occurrence of accidents, and guaranteeing the safety of life and property of the ship pilot.
Owner:交通运输部水运科学研究院

Highway tunnel vehicle spontaneous combustion early warning system and method based on thermal imaging

The invention provides a highway tunnel vehicle spontaneous combustion early warning system and method based on thermal imaging. The system comprises a monitoring center, a control unit, a monitoring unit and a display unit, wherein the monitoring unit is used for monitoring information of vehicles entering a highway tunnel; and the display unit is used for prompting information for drivers. The temperatures of the vehicles which are about to enter the tunnel are detected, when the temperature data exceed the threshold value, warning information is transmitted to the monitoring center automatically, and meanwhile, license plate numbers and warning information of the vehicles are transmitted to the display unit for prompting the drivers. By the highway tunnel vehicle spontaneous combustion early warning system and method based on thermal imaging, the vehicles which can spontaneously combust potentially can be warned before entering the tunnel, and then can be treated ahead of time, hidden dangers causing spontaneous combustion of the vehicles are eliminated, the circumstances that the vehicles spontaneously combust after entering the tunnel are reduced, and life and property safety of people is guaranteed.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST

Power distribution cabinet fire monitoring and processing system based on internet of things

The invention discloses a power distribution cabinet fire monitoring and processing system based on the internet of things. The power distribution cabinet fire monitoring and processing system comprises a plurality of power distribution cabinet bodies, the plurality of power distribution cabinet bodies are arranged in the power supply network circuit, and the interior of each power distribution cabinet body is provided with a temperature inductor, a smoke inductor, a temperature adjusting device and a sub-processor. Each power distribution cabinet body also comprises a power device connected with the interior of the power distribution cabinet body and a circuit switch arranged on the joint of the commercial power and the circuit switch, the temperature inductor and the smoke inductor are electrically connected with the sub-processor, the sub-processor is electrically connected with the temperature adjusting device and the circuit switch, and the sub-processor is electrically connected with the commercial power. The power distribution cabinet fire monitoring and processing system based on the internet of things makes each power distribution cabinet body have monitoring and simple processing capability to a fire hazard by means of the internet-of-things technology, fire can be prevented from occurring and being further enlarged, a first GPS positioning device and a second GPS positioning device are employed to notify a nearby maintenance man to process and maintain the power distribution cabinet body, the first-aid repair response of the maintenance man is further improved, and the life and property safety of people living around the power distribution cabinet is guaranteed.
Owner:长沙亚明电子科技发展有限公司

Parking space layer-adding device and automatic car-blocking device for same

The invention discloses a parking space layer-adding device and an automatic car-blocking device for the same. The parking space layer-adding device comprises mutually-overlapped ground parking space layers and a second layer integrated with the ground parking space layers. In the width direction of a car body, two screw rods on the inner side of a parking space are both connected with a synchronous shaft, and in the length direction of the car body, a driving shaft is clamped between two screw rods of each side; each driving shaft is in transmission connection with the screw rods of the corresponding ends through a corresponding synchronous gearbox; lifting cross beams on the two sides are fixedly connected with lifting parking space plates arranged inside the lifting cross beams, and the lifting parking space plates are in parallel with the ground; and the automatic car-blocking device is further arranged, when car blocking is needed, the automatic car-blocking device can rotate in an open groove of the corresponding parking space lifting plate and thus protrudes out of the upper surface of the parking space lifting plate, or when car passing is needed, the automatic car-blocking device is rotated to the position at least in parallel with the upper plate surface of the corresponding parking space lifting plate or lower than the upper plate surface of the corresponding parking space lifting plate. Adjacent spaces outside parking spaces are not occupied, one parking space is changed into two parking spaces, operation is convenient, and the car-blocking device of the unique structure enables the device to be safe and reliable.
Owner:武汉富鑫康电气有限公司

Raw soil cave dwelling wooden arch rib reinforcement system and construction technology thereof

The invention relates to a raw soil cave dwelling wooden arch rib reinforcement system and a construction technology thereof. The raw soil cave dwelling wooden arch rib reinforcement system comprises multiple stand columns, purlines and a wooden arch fame, the stand columns are arranged on the two sides of a cave chamber of a raw soil cave dwelling in the depth direction of the cave chamber, the purlines are arranged at the upper ends of the stand columns, the purlines are arranged on arch supports on the two sides of the cave chamber in the depth direction of the cave chamber, and the wooden arch frame is arranged on the purlines and supports a cave arch of the cave chamber. According to the raw soil cave dwelling wooden arch rib reinforcement system and the construction technology thereof, the arch supports on the two sides of the cave chamber are each provided with one purline in the depth direction of the cave chamber of the raw soil cave dwelling, the stand columns are arranged in the cave chamber to support the purlines, multiple arch-shaped rafters are arranged on the pulines in the depth direction of the cave chamber, and a space wooden arch frame structure is formed; the wooden arch frame cooperates with the cave chamber soil arch to bear the upper soil body load together, so that development of arch crown cracks is limited, the bearing capacity of an arch crown is strengthened, the service life of the raw soil cave dwelling is guaranteed, and the dwelling safety is guaranteed.
Owner:ZHENGZHOU UNIV

Sudden-onset disaster emergency wireless public broadcast system

A sudden-onset disaster emergency wireless public broadcast system comprises a main end device and a plurality of terminals. The main end device is composed of a local emergency alarm signal generator, an encrypted signal generator, a wireless broadcast emitter and the like. Each terminal is composed of a wireless channel scanning receiver, a terminal maintenance device, a signal decipher, a terminal backup battery and the like. By means of the sudden-onset disaster emergency wireless public broadcast system based on an existing wireless broadcasting station, a user does not need to worry about power outage, network link outage and line breakage, extremely-high reliability is achieved, emergency encrypted signals can be reliably received from existing pubic wireless broadcasting stations at all wave bands and / or temporary emitters through the sudden-onset disaster emergency wireless public broadcast system at any time, rapid automatic start is achieved, voice information of early alarms, alarms and action guidance from government emergency departments is directly and forcefully broadcasted to all victims, existing resources are fully shared, and emergency system construction can be rapidly completed at a low cost; self-maintenance can be achieved for the system, and maintenance difficulty and maintenance expenses can be greatly reduced for an extremely-large number of wireless public broadcast system terminals which are distributed nationwide.
Owner:许春香
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