241results about How to "Protect life" patented technology

The invention relates to a method for integrated comprehensive management of gas in a low-permeability single coal bed, which can effectively solve the problem of comprehensive management and utilization of the gas. A technical scheme of the method comprises the following steps of: firstly, drilling holes, wherein a high-torque drilling machine and a rifle or a trihedral drill stem are used for solving the phenomenon of clamping the drill stem caused by collapsing and jetting of the holes in the hole drilling process; and then, performing hydraulic fracturing permeability improvement on the coal body, drilling holes for pre-split blasting, performing gas drainage, and recycling the drained gas, thereby implementing the integrated management of the gas. With the method provided by the invention, the permeability of the coal body is improved, a pre-draining rate of the gas is improved, and the drained gas is recycled, so that the drilled holes are radically prevented from being blocked in the construction process, the problem of difficulties in draining the gas in the low-permeability coal bed with a drilling tool having insufficient capability in the drilling construction is solved, consequently, outburst risk of the coal and the gas is reduced, outburst accidents of the coal and the gas are reduced and even avoided, and mine production safety and lives of coal mine workers are ensured, so that the method brings great economic and social benefits.

The invention relates to a vehicle anti-impact alarm method and relative system, for alarming driver to avoid impact and accidence. The output of inverter power and one end of relay is connected with an output signal interface of an intelligent camera, the picture information collecting module, vehicle character extracting module, information analyzing module, vehicle position tracking module, ranging speed measuring module and anti-impact alarm module are embedded in the chip of the camera, while the intelligent camera via a mounting support is fixed in the front windscreen glass of cabin, and said six modules should started in serially to realize the alarm method.

The invention discloses a safety monitoring and fire alarming integrated system and method based on an infrared imaging technology. The system comprises a plurality of infrared cameras, a plurality of data processing modules and a monitoring computer, wherein the infrared cameras are respectively erected in a plurality of places in which safety monitoring needs to be implemented and are used for shooting the infrared charts of monitored areas and outputting infrared chart analog signals related to the infrared charts, which comprise temperature values, of the monitored areas; each data processing module is arranged near each infrared camera and is used for converting the infrared chart analog signals to infrared digital signals for standard network transmission; and the monitoring computer is used for generating and outputting signals of controlling the cameras, receiving, analyzing, processing, managing and controlling the digital signals, determining the types of the dangerous cases aiming at the abnormal conditions, and giving an alarm. The system and the method have the beneficial effect of improving the flexibility and timeliness of safety monitoring and fire alarming and the accuracy of alarming.

The invention discloses a prewarning anti-collision device and method for a vehicle. The prewarning anti-collision device comprises a GPS (Global Positioning System) unit, an information transmit-receive control unit, a communication unit and a prewarning unit, wherein the GPS unit is used for acquiring the positioning information of the vehicle and sending the positioning information to the information transmit-receive control unit; and the information transmit-receive control unit continually receives the information of the vehicle, continually sends the information of the vehicle to the outside through the communication unit, continually receives the information of other vehicles, compares the information of the vehicle with the information of other vehicles and sends a collision prewarning signal to the prewarning unit. By adopting the prewarning anti-collision device for the vehicle, a driver can still accurately judge the conditions of vehicles nearby when the personal visual system feels that the front of the vehicle is blurred by rain and fog, sand and dust, and barriers; and information communication among vehicles is provided to bring convenience for the driver to accurately make a driving decision in a very short time, so that the alarm dispatching time is saved, the driving safety factor is improved and a life saving role can be played in emergency.

The invention relates to the coal mine safety technology and discloses a gob natural fire control method which has good effect of fire preventing and extinguishing. The gob natural fire control method comprises the following steps: pouring nitrogen, wherein a nitrogen pouring point is 30 to 60 meters from a working face, and the amount of the liquid nitrogen is 2000m3 / h; reducing the air leaking volume of a gob, and reducing the pressure difference of the working face, and controlling the pressure difference of the working face within 120Pa; blocking the leakage within an area in which the tight caving cannot be achieved due to the cantilever beams formed at an air inlet side and an air return side of the gob through a top plates, and timely closing a transverse rail at the gob; accelerating the advance velocity of the working face, wherein the working face is at the speed of 4m / d; increasing the recovery ratio; and controlling the thickness of the residual coal to be below 1.3 meters. According to the gob natural fire control method, a comprehensive working face gob comprehensive fire preventing and extinguishing measure based on 'nitrogen pouring first, leakage blocking, wind resisting, accelerating of advance velocity and recovery rate increasing second' is proposed, and measure implementing parameters are provided; with the adoption of the method, the effect of preventing and extinguishing the fire of the gob can be improved; and the mining on the working face can be ensured to be smoothly carried out.

The invention discloses a physiological parameter management monitoring system and method based on the internet of things. The system comprises a user terminal device worn on a tested object, a data center and a server for achieving physiological parameter management monitoring. The user terminal device is connected with the data center through a bluetooth transmission module in a data communication mode, and the data center is connected with the server through a wireless network in a data communication mode. Physical conditions of the tested object are detected and managed in real time through the internet of things, a physiological parameter sensor collects physiological data periodically and transmits the physiological data to the data center through the bluetooth transmission module, and the data is processed, handled, stored and transmitted to a mobile communication network to be managed and monitored by the server. According to the system and method, the device worn on the tested object is simple and low in cost and power consumption, can monitor the physical conditions of the tested object in real time and is intelligent and good in practicality.

The invention relates to a vehicle bias alarm method and relative system, for alarming driver to avoid bias and accidence. The output of inverter power and one end of relay is connected with an output signal interface of an intelligent camera, the picture information collecting module, channel mark line recognizing module, vehicle direction parameter evaluation module, vehicle position parameter evaluation module, channel width evaluation module and channel bias alarm module are embedded in the chip of the camera, while the intelligent camera via a mounting support is fixed in the front windscreen glass of cabin, and said six modules should started in serially to realize the alarm method.

The invention belongs to the technical field of fire alarm systems and discloses a building fire and security cloud intelligence integrated linkage system. The building fire and security cloud intelligence integrated linkage system comprises an automatic fire alarm system, a digital network video monitoring system, an intelligent fire extinguishing and linkage control system, a fire cloud intelligence system and a data transmission service system, wherein the automatic fire alarm system is used for collecting original information of a field fire alarm system and converting the original information into an alarm signal; the digital network video monitoring system is used for dynamically obtaining field video image information by using a network camera in real time; the intelligent fire extinguishing and linkage control system is used for transmitting the information to a device end of performing fire extinguishing; the fire cloud intelligence system is used for carrying out integrated matching processing on the obtained alarm signal and video image information, feeding back the obtained alarm signal and video image information to the intelligent fire extinguishing and linkage control system to perform fire extinguishing operation, and uploading data information to a transmission network data server and a fire cloud intelligence platform; and the data transmission service systemis used for transmitting the information processed by the fire cloud intelligence system to a terminal operation system. According to the building fire and security cloud intelligence integrated linkage system, linked visual dynamic monitoring of a fire field, a field video and an automatic field fire alarm device and building fire and security cloud intelligence integrated linkage control of a terminal and the fire extinguishing performing end can be achieved.

A vehicle state signal system is aimed to provide early-warnings to a traffic accident and a vehicle robbery and theft. The system is composed of a microprocessor, a LED driver, a LED display, a MEMS micro-accelerometer, an acceleration / speed converter, a keyboard / key circuit and a power supply, so that the system can automatically display the speed and provide early-warnings to the driver. The high brightness LED tricolor dynamic display can generate difference obvious color and visual effects to win an early-warning time about 0.8~1 second. The invention can improve the vehicle running and parking safety, reduce collision accidents, and is easy to install.

The invention relates to an alarming mobile telephone and relative alarming method. Said alarming mobile telephone comprises an alarm helper set module for setting the helper; an alarm transmission period set module for setting the alarm transmission period; an alarm content record module for recording the alarm content in voice; and an alarm transmission module for transmitting said alarm content and the information of geological position to the said helper. And said invention can combine the sensor alarm. When detecting the external information content is over the preset valve, said invention can send alarm information with accurate geological position to special user. The invention is based on present mobile telephone to combine the positioning system to add accurate geological position information, which can effectively protect people.

The invention relates to a vehicle dynamic display device and a displaying method thereof. The vehicle dynamic display device comprises an MEMS microaccelerometer, a vehicle state discriminator, a driver, a LED display or an EL emitting diode. An accelerometer is adopted for detecting state; an automatic decision can be performed on states of collision, emergency brake, urgency speed reduction, general speed reduction and acceleration through the vehicle state discriminator; real-time display can be respectively performed according to the urgent degree ordering in various colors, graphics, characters or the combination thereof; hand operation is replaced by automatic control, and the two signals of Preparation-Break replace break signals, so that the difficulty of Emergency Brake Precaution is solved. Once a vehicle is in danger, all vehicles thereafter can synchronously put on the brakes as well as the front vehicle, and an early warning time of 0.8 second to 1 second can be gained, thereby effectively avoiding the phenomena of driving too close to the car in front and serially driving too close to the car in front. The comprehensive early warning mechanism overcomes a plurality of defects in the traditional signal lamp and creates the beginning of mutual communication among vehicles, knowing one and others and safe driving. The invention has the advantages of low cost, high cost performance and simple installation, and is suitable for high-level installation at the tail parts of various vehicles and the installation of rear boxes of motorcycles and mopeds.

The present invention determines a period of a yawn, a speed and a period of a nod, and a speed and a period of a blink, of a user, using a driving determination unit which includes a GPS device and determines a driving state of a vehicle of a user and a sleepiness determination unit which receives an image and three-dimensional depth information photographed by a photographing unit including an infrared depth camera and an infrared camera which are installed at a location where the face of a user can be observed, in a first step determination, and when it is determined that there is a sleepiness prelude action, outputs a "preliminary warning". Thereafter, the present invention determines a closed state of a pupil, whether a gaze is headed to the front or not, and an angle of a head, in a following second step determination, and when it is determined that there is a sleepiness execution action, outputs a "main warning" through a warning unit. Thus, the present invention accurately determines only a sleepiness driving action except for a closed state of a pupil, a case where a gaze is not headed the front, and a case where a head is lowered, which does not result from sleepiness, thereby previously preventing a traffic accident, loss of life, and economic loss, which are generated due to sleepy driving.

The invention relates to the technical field of manufacturing of glass products, and particularly relates to a piece of non-heat insulation type composite fireproof glass and a manufacturing method of the non-heat insulation type composite fireproof glass. The non-heat insulation type composite fireproof glass comprises a fire facing glass layer and a fire backing glass layer, wherein a support spacing body is arranged between the fire facing glass layer and the fire backing glass layer, a fireproof sealant is filled at the periphery of the support spacing body; a closed cavity enclosed by the fire facing glass layer, the fire backing glass layer and the support spacing body is filled with an inorganic transparent fireproof adhesive layer. The non-heat insulation type composite fireproof glass has the characteristics of good appearance quality, good weather fastness, good heat resistance, high visible light transmittance and high strength, when a fire disaster occurs, the inorganic transparent fireproof adhesive layer absorbs a large quantity of heat and is foamed and expanded to become a non-transparent white fireproof adhesive plate after the fire facing glass layer is broken, the heat produced in the combustion is effectively prevented from conducting and spreading to the side back to fire from the fire facing side, the fireproof integrity is further kept, the roles in protecting life and wealth of people are played, and the non-heat insulation type composite fireproof glass is suitable for fireproof glass for an external window of a building.

The invention discloses a gradient composite impacting energy absorption pipe fitting. The pipe fitting comprises a gradient inner pipe, a gradient outer pipe, an aluminum foam filling layer and a fiber reinforced cloth filling layer; the gradient inner pipe is sleeved with the gradient outer pipe, the gradient inner pipe is filled with the aluminum foam filling layer, and the portion between the gradient inner pipe and the gradient outer pipe is filled with fiber reinforced cloth. The gradient composite impacting energy absorption pipe fitting has the following advantages that the energy absorption efficiency can be improved in the modes of axial crumple, radial extrusion, expansion energy absorption, tearing energy absorption and the like, when the pipe fitting is applied to an automobile, when collision occurs, the life safety and property safety of automobile occupants can be protected to the maximum extent.

The invention relates to a highway overpass bridge. The T-junctions and intersections of an overpass are standardized and the design of the overpass is simplified through a non-interfering three-layer interchange structure of a left-side running overpass, a u-turn straight running lane, and a right-side running and non-motor vehicle sidewalk. The bridge is simple, high-efficiency and safe, occupies small area and has low manufacturing cost, and a standardized design is easy to realize. The invention has the advantages that: the bridge occupies small area, has low manufacturing cost, does not have conflict points or intersecting points, reduces traffic accidents, protects human life, saves energy, time, manpower and material resources, and thoroughly changes the structure of the conventional overpass; motor vehicles and non-motor vehicles run separately and can directly u-turn; and when the bridge is constructed by the scheme, the traffic problem of the whole country and even the world can be radically solved.

The invention relates to the field of tobacco pest control, in particular to an automatic aphidius gifuensis pupa quantitative packaging machine. The automatic aphidius gifuensis pupa quantitative packaging machine consists of a rack, an electrical controller, an air pump, a negative pressure air valve, a positive pressure air valve, an air pipe, a support, a bearing pedestal, a blowing-suction roll, a blowpipe, a micro motor, a storage box, a feeding box, a numerical control sliding table and an aphidius gifuensis pupa hopper. Automatic quantitative packaging before aphidius gifuensis pupa seedlings are released can be realized automatically, and the production efficiency is improved. In addition, according to the characteristic that aphidius gifuensis pupas are delicate and vulnerale, positive pressure air and negative pressure air are adopted for quantitative packaging and storage of the aphidius gifuensis pupas, the aphidius gifuensis pupas can not be harmed by machines in a packaging and storage process, and the aphidius gifuensis pupa seedlings serve for aphid control work better.

The invention discloses a medical decision supporting method, which comprises the following steps: configuring a risk decision information base in advance; utilizing the risk decision information base to test a patient, and determining the reaction results of the patient on the risk decision information of different expression modes; according to the reaction results, adopting latent class analysis to classify the potential risk decision tendencies of the patient, and predicting the thrombolysis identification rates of the patients in different classes for accepting the risk decision information of different expression modes; collecting the basic information of the patient from multiple dimensions; according to the class of the risk decision tendency of the patient and the multi-dimensional basic information of the patient, establishing a risk decision model to predict the intravenous thrombolysis tendency of the patient; and carrying out intravenous thrombolysis indication assessment on the patient, collecting the basic information of the patient according to the risk decision model if the patient conforms to the indication, substituting a thrombolysis risk decision model to predict the intravenous thrombolysis decision tendency of the patient, and finally, determining an expression mode of optimal intravenous thrombolysis decision information which is shown to the patient.

The invention provides a making method of a luminous fire label, and the making method is as follows: performing ball milling on raw materials potash feldspar, soda feldspar, chinastone, pyrophyllite, diopside, kaolin, alumina ore, Xinyang soil, black clay and sodium potassium feldspar to obtain slurry, using a drying tower to dry until the moisture is less than 6.5% to obtain powder, using a press to press the powder into a blank mold; burning the blank mold at the high temperature of 1200-1250 DEG C to obtain a ceramic tile with the moisture absorption rate of 1%+ / -0.5; printing patterns with different labels on the ceramic tile surface by a screen printing plate screen printing way, and then entering into a roller kiln at 1200 DEG C for firing. The luminous fire label prepared by the method can resist the high temperature of 1200 DEG C without damage to the label, and the luminous fire label can really play the effects of protecting people's life and guiding correct escape routes.

The invention discloses an anti-sinking system of a ship. The anti-sinking system comprises a detection subsystem, a central control subsystem and an anti-sinking executive subsystem, wherein the detection subsystem consists of a gravity center deflecting angle detection device for the ship and an immersion depth detection device for the ship; the central control subsystem consists of a manual control part and an automatic control part which are parallel, and is used for processing detection information and performing executive operation on the anti-sinking executive subsystem; the anti-sinking executive subsystem consists of a pressure storing container group, an air pump group, air pipelines, air sac cabins and air bags, wherein the pressure storing container group consists of a plurality of pressure storing containers which are connected in parallel, compressed air with certain pressure is invariably maintained in the pressure storing containers, one ends of the pressure storing containers are connected with the air pump group through the air pipelines, and the other ends of the pressure storing containers are connected with the air bags in the air sac cabins. According to the anti-sinking system disclosed by the invention, the air bags are arranged so as to prevent the overturn and the sinking of the ship, the sinking speed of the ship is lowered, time of safe evacuation for people and property is bought, and the salvage difficulty is reduced.

The invention relates to a system for preventing an automobile from being soaked in water and the automobile. The system comprises a control device, an inflation device and an airbag device, wherein the control device comprises a controller and a water level sensor; the inflation device comprises an air compressor; the airbag device comprises more than one airbag; an inflation interface and a deflation interface are formed in each airbag; the inflation interfaces of the airbags are connected with the air compressor through a pipeline component; deflation valves are connected to the deflation interfaces of the airbags; the water level sensor and the air compressor are electrically connected with the controller respectively. According to the system and the automobile, a water level signal of a position where the automobile is located is detected by the water level sensor, and then is automatically judged whether to reach or exceed a safety value or not by the controller, so that a mechanism for preventing the automobile from being soaked in water is automatically started to enable the inflation device to inflate the airbags, and sufficient buoyancy is provided for the automobiles by the airbags to prevent the automobile from being soaked in water.

A bus fire setting early warning monitoring platform disclosed by the present invention comprises a sending terminal, a reception terminal, a vehicle-mounted intelligent terminal and a background management center, and the sending terminal, the reception terminal and the vehicle-mounted intelligent terminal are all arranged on a bus. The bus fire setting early warning monitoring platform provided by the present invention supports to monitor the concentration of the flammable liquid volatile matters in a bus carriage synchronously in an online and networking manner via the close range wireless transmission and the operator network transmission, acquires the information in the bus wirelessly, and timely sends out the alarm to remind the driver to pull over and open the door to check the artificial fire setting potential safety hazards, and the background management center monitors the early warning, GPS and audio and video information synchronously via an operator network to determine that the artificial fire setting events in the bus are true, so that the administrators can link the police, fire-fighting and hospital departments timely to win the optimal detection, rescue and first aid time and protect the life and property security of the passengers in the bus furthest, and accordingly, the public security emergency disposal capability is improved. Aiming at the situations that the operating bus distribution stations are many, and the maintenance difficulty is large, the platform adopts a remote fault automatic diagnosing and positioning technology, thereby reducing the maintenance workloads of the after-sale equipment greatly.

The invention provides a motor vehicle brake device of a clutch and brake system. A fit linkage principle and a structural principle of a clutch system, a brake system and an acceleration system, and arrangement and operating methods of a clutch pedal, a brake pedal and an acceleration pedal are provided. During motion, the brake system is linked with the clutch system and independent of the acceleration system; during the motion, the clutch system is not linked with the brake system and independent of the acceleration system; the clutch pedal and the brake pedal are operated by the left foot of a driver; and the acceleration pedal is operated only by the right foot of the driver. Meanwhile, the invention provides an optimized scheme, in which the brake pedal and the clutch pedal are integrated into a clutch and brake pedal; the upper half travel of the clutch and brake pedal finishes the motion of a clutch, while the lower half travel begins and finishes the motion of the brake system; and the clutch and brake pedal is operated by the left foot of the driver, while the acceleration pedal is operated by the right foot of the driver, so the device is simple and clear, safe and reliable, easy to learn, remember and operate, and extremely low in maloperation rate. Meanwhile, the clutch and brake pedal is designed to structurally comprise a clutch pull rod and a brake pull rod.

The invention provides a river reservoir bank deformation data automatic collection and processing method based on a ground stable platform SAR, and belongs to the field of deformation monitoring. Themethod can be applied to the deformation monitoring of a river reservoir bank under the condition of complicated topography and landforms. According to the method, firstly, a GB-SAR is used for continuous observation to obtain monitoring data and to obtain an SAR original image; then, multiple images are subjected to a series of processing to obtain an interference pattern and a coherence pattern; next, an algorithm is used for extracting a coherence point; next, each pixel in the coherence pattern is subjected to phase unwrapping; next, an atmosphere phase is removed by using an atmosphere model; next, a deformation value is calculated according to the real phase of the deformation; and finally, the geocoding is performed according to the corner reflector geographical coordinate, and a coded deformation pattern is obtained. The river reservoir bank high-slope deformation monitoring technology is finally realized. The technology can be used for fast and accurately obtaining the slopedeformation information; the detection precision on the slope is improved; and the correct evaluation is made on the slope stability.

The invention belongs to the field of new emergency security materials, particularly relates to a water-based aerogel efficient fire extinguishing agent, and further discloses a preparation method thereof, According to the water-based aerogel efficient fire extinguishing agent, the inorganic aerogel powder, the template agent, the phosphorus-containing flame retardant, the nitrogen-containing flame retardant and the hydrophilic colloid stabilizer are used as raw materials, wherein the efficiency of the fire extinguishing agent is greatly improved by utilizing the ultralow heat conductivity coefficient and ultrahigh adsorption capacity of the inorganic nano porous aerogel; meanwhile, the phosphorus-containing flame retardant and the nitrogen-containing flame retardant are combined to serveas related functional components of the fire extinguishing agent, and the colloid stabilizer and the ion buffer agent are added into the water-based flame retardant, so that the uniformity and the expiration date of the flame retardant are increased, and the fire extinguishing agent has an efficient fire extinguishing function, a good fireproof function and a good flame retardant function; in addition, the fire extinguishing agent also has longer quality-guaranteeing storage life, and the fire extinguishing variety, efficiency and application range are effectively expanded.

The invention discloses a novel lock catch type grounding wire anti-falling hook device with a bottom opening, which is reasonable, rigorous and reliable in structure and can effectively prevent a grounding wire from falling off. Through a sealing cross rod structure, the problem that the grounding wire falls off is solved directly and fundamentally. The hook device is mainly composed of a main hook, an arc-shaped pressing piece, a torsion spring, an operating mechanism, a sealing transverse rod and the like. When the hook is hung on a lead, the sealing cross rod can be automatically opened; after being hung, the sealing cross rod can be automatically closed, and the operation mechanism can realize self-locking of the T-shaped sliding block, so that the sealing cross rod cannot be downwards opened; when the hook device needs to be taken down, only self-locking of the T-shaped sliding block needs to be removed, the sealing cross rod is opened downwards automatically, and then the hook device can be taken down smoothly; when the hook is hung on a wire, the arc-shaped pressing sheet can be tightly pressed on the outer side of the wire under the action of the torsion spring. The operating mechanism comprises a T-shaped sliding block with an inclined hole, a T-shaped sliding groove and a transverse pull rod.

The automobile tail air cleaner includes one siphonal box, which has one siphoning port in the top and in the opposite direction to the automobile motion and one ventilating plate in the front side with ventilating port to inside the automobile; and one siphon opening and closing inner box, which is mounted through the shaft in the side wall inside the siphoning port and has one middle partition board to separate the inside into two bins and one shifting fork connected to one electric control switch. The present invention may be used for cleaning air inside the automobile and replacing air inside the automobile without any power consumption.

The invention relates to a life jacket capable of giving out a distress signal. The life jacket is provided with a rubber or nylon fabric, an EPS (Expanded Poly Styrol) filler is filled in the fabric and is distributed on the front surface and back surface of the life jacket, and a flash lamp capable of giving out a short-long-short distress signal is arranged at the chest of the front surface of the life jacket. The life jacket is further provided with a whistle and a fresh water filter bag. The life jacket disclosed by the invention can give out the distress signal and can also transmit a sound signal by use of the whistle; and in addition, the life jacket has very high identifiability on sea at night, and facilitates the search and rescue for rescuers and the help seeking for persons in water. The fresh water filter bag is favorable for the persons in water to supplement fresh water and sustain lives.

The invention discloses an anti-collision device provided with an air cushion for lifting hull buoyancy. The device comprises a hull and an air cushion anti-collision device arranged on the left side,the right side and the front of the hull. The air cushion anti-collision device comprises an air cushion connected to the hull and a protective plate connected to the air cushion. The protective plate is a protective chain plate composed of a plurality of metal plates or rubber plates through pins. The protective chain plate is disposed on the outer side of the air cushion. The interior of the air cushion is provided with a plurality of interconnected horizontal or longitudinal airbags, the airbags are connected to an inflator in the hull, and the inflator is connected to a switch and a powersource. According to the device, the arranged protective plate and the air cushion can effectively reduce the damage caused by collision to the hull, and the designed air bags can provide buoyancy for the hull after being inflated, thereby being conductive to improving the driving safety of the hull, reducing the occurrence of hull sinking, protecting life and reducing the loss of property.

The invention discloses a vertical elevator fall saving device adopting umbrella shape, speed reducing baffle and spring buffer technology. The saving device consists of an automatic measurement instrument device, a cage bottom plate buffer device, a cage roof buffer device, a cage top umbrella-shaped speed reducing device, a voice and human-machine interaction device, a shaft well speed reducing baffle plate device, a shaft bottom spring buffer device and a central integrated control device. The saving device can effectively overcome the defects of the conventional elevator safety protection system; and the cage can be decelerated under the combined action of the automatic measurement instrument device, the cage top umbrella-shaped speed reducing device, the shaft well speed reducing baffle plate device and the like, and soft landing is finally realized so as to fulfill the purpose of protecting passengers' lives. The saving device is particularly suitable for vertical elevator cage fall of medium and low-layer buildings, and furthest protect the passengers' lives.

The invention discloses a nanocomposite. The nanocomposite comprises black BiOX particles and an envelopment, wherein the envelopment is a biological compatible material; a photothermal conversion efficiency of the nanocomposite is not lower than 10%; and BiOX is at least one selected from BiOF, BiOCl, BiOBr, BiOI and BiOAt. The invention further discloses a preparation method for the nanocomposite and application of the nanocomposite. The nanocomposite is a two-dimensional black bismuth oxyhalide nano-material with an oxygen vacancy defect and is applied to photothermal therapy of tumors, andthus, a photothermal conversion material with wide absorption spectrum, high photothermal conversion efficiency and high molar extinction coefficient can be obtained; and by applying the nanocomposite to integration of diagnosis and treatment of the tumors, a diagnosis and treatment integrated reagent with good treatment effect and remarkable and excellent CT imaging performance can be obtained,identification and checkout on the tumors and serious diseases of heart and cerebral vessels, nervous systems, skeleton muscles and the like can be improved, and functions such as follow-up treatment,treatment effect following and prognosis evaluation during tumor treatment can also be achieved.