38results about How to "Avoid Spontaneous Combustion Situations" patented technology

The invention belongs to the technical field of machinery, in particular to a controllable discharge safety automatic disassembly device for a waste hard shell lithium ion power battery, Including anexhaust gas filtration tank, an Intake pipe, a check valve, an air cylinder, an Outlet pipe, a suction pipe first pipe, case, a pipe fixing plate, hose, a second pipe, a solenoid valve, a first motor,a slider, a nitrogen tank, a transverse plate, a mounting plate, a funnel, a storage plate, support legs, a waste liquid collection bottle, a filter screen, a support column, a first pressure plate, asecond pressure plate, a case door, a second motor a amounting plate , second motor, a aguide rail mounting pl ate, guide rail, screws, a cutting knife and a screw mounting plate. The disassembly efficiency of the invention is high, As that liquid nitrogen cool the cutting place during the cutting of the power battery, the occurrence of the spontaneous combustion of the battery caused by excessive temperature during the cut is avoided, the battery explosion is avoided, the battery is cut in the box body, the personal safety of the dismantling personnel is facilitated, and the gas filtering mechanism avoids the pollution of the environment caused by the waste gas during the dismantling.

The invention relates to the field of coal mine safety, in particular to a warning grading method and a warning method for spontaneous combustion of coal. The coal is prone to spontaneous combustion,and the warning for spontaneous combustion of coal is divided into six grades, namely, grey warning, blue warning, yellow warning, orange warning, red warning and black warning. The warning method includes the following steps: collecting O2, CO, CO2, CH4, C2H4 and C2H6 concentration data; judging the warning grade, and setting a warning threshold as R0, wherein the warning threshold of coal spontaneous combustion can be expressed by the following mathematical formula: R0={[O2]>18% union [CO]>50ppm} intersecting {[O2] belongs to (15%, 18%) union [CO]>100ppm} intersecting {[O2] belongs to (12%,15%) union [CO]>150ppm} intersecting {[O2]<12% union [CO]>200ppm}; and issuing a warning and taking measures according to different thresholds. The spontaneous combustion process of coal can be indicated more accurately and sensitively, and higher preventability is achieved.

The invention relates to a wake-up circuit and a battery management system and relates to the technical field of automobile industry. According to the mainly adopted technical scheme, the wake-up circuit comprises a thermistor and a first fixed resistor, wherein the thermistor is connected between a power supply and a grounding terminal in series; a first output end is arranged between the thermistor and the first fixed resistor; the thermistor is used for detecting the temperature of a battery; the first output end is used for being connected with a management module of the battery managementsystem and transmitting a voltage signal to the management module; and when the thermistor detects that the temperature of the battery is higher than a preset value, the wake-up circuit outputs the voltage signal of predetermined size to the management module as a wake-up signal through the first output end. The wake-up circuit is capable of monitoring the temperature of the battery under the condition that a key of an electric automobile is powered down, so that the condition of spontaneous combustion of the electric automobile caused by battery overheating is avoided.

The invention belongs to the technical field of recycling of lithium-ion batteries, and particularly relates to a controllable discharging and safe and automatic disassembling method for a waste hard-shelled lithium-ion power battery. The method comprises the following steps: S1, discharging the waste hard-shelled lithium-ion power battery; S2, placing the discharged battery in step S1 in automatic battery disassembling equipment and then disassembling the battery; and S3, classifying and recycling the materials disassembled in step S2. The battery can be rapidly disassembled by the automaticbattery disassembling equipment used in the method, the disassembling efficiency is high, during cutting of the power battery, a cut position is cooled by liquid nitrogen, spontaneous combustion of the battery due to over-high temperature during cutting is avoided, explosion of the battery is also avoided, battery cutting operation is carried out in a box, thus, personal safety of a disassemblingworker is benefited, and by a gas filtering mechanism, the circumstance that the environment is polluted by waste gas generated during disassembling is avoided.

The invention discloses an anti-electric-shock intelligent electric vehicle charging pile, and relates to the technical field of electric vehicle charging, the anti-electric-shock intelligent electric vehicle charging pile comprises a case assembly, a waterproof assembly and an anti-electric-shock assembly, the waterproof assembly is fixedly connected with an outer box body, the anti-electric-shock assembly is arranged in the outer box body, and the anti-electric-shock assembly is fixedly connected with the outer box body. According to the charging handle, heat of the charging end can be rapidly discharged through the arrangement of the inner annular cavity and the outer annular cavity, when the heat is too large, the corrugated pipe converts heat energy into kinetic energy in the mode that the included angle is suddenly increased, charging is stopped in time, and the situation of spontaneous combustion of an electric automobile is avoided. According to the invention, the position of the heat dissipation ball is changed, the difference value of the local temperature of the plug column is adjusted, the service life of the heat dissipation ball is prolonged, and the surface heat dissipation effect of the heat dissipation ball is improved through continuous extension and retraction of the heat dissipation ball.

The invention relates to the technical field of charging piles, in particular to a high-performance stable direct-current charging pile which comprises a charging pile body. First fans are in threaded connection with the positions, close to the two ends, of the bottom of the inner wall of the charging pile body, a first heat dissipation bin is arranged at the top of the charging pile body, and a dustproof air inlet is formed in the right side of the first heat dissipation bin. A partition plate is arranged at the position, close to the dustproof air inlet, in the first heat dissipation bin, a fan is embedded in the middle of the side face of the partition plate, a dustproof air outlet is formed in the left side of the first heat dissipation bin, symmetrically-distributed rectangular mounting through grooves are formed in the position, close to the bottom, of the rear side of the charging pile body, and semiconductor chilling plates are arranged in the two rectangular mounting through grooves. According to the high-performance stable direct-current charging pile, the interior of the charging pile is cooled through the arranged first fan and the arranged semiconductor chilling plate, the temperature in the charging pile is prevented from being too high, and therefore what is ensured is that the charging pile can be in a high-performance charging state, the charging stability is maintained, and the situation of spontaneous combustion of the charging pile is avoided.

The invention discloses an environment-friendly emulsion explosive. In order to solve the problems that existing emulsion explosives are high in production cost, low in use safety, poor in explosive combustion performance, environmental protection effect and energy-saving effect, poor in explosive quality stability and frost resistance and low in storage stability, according to the following scheme, the explosive is prepared from, by weight, 60-80 parts of an aqueous-phase solution, 10-16 parts of a hydrocarbon fuel, 1-4 parts of a composite emulsifier, 2-5 parts of a density regulator, 1-3 parts of a sensitizer, 1-2 parts of a foaming accelerator and 12-17 parts of water. According to the environment-friendly emulsion explosive, the sources of explosive combustion substances are wide, theproduction cost is reduced, and the safety of the explosive is enhanced; the combustion performance of the explosive is optimized, and the energy and the consumption speed are increased, so that theenvironmental protection performance and the energy-saving performance are improved; the quality stability and frost resistance of the explosive are excellent, and a spontaneous combustion phenomenonin a sulfur-containing gun hole is effectively prevented; the storage stability and the optimized explosive performance are excellent.

The invention belongs to the field of mining industry, and discloses a stacker-reclaimer remote control system. The system comprises a data processing device, a laser scanning device, a PLC control system, a pitching positioning device, a level gage and a stacker-reclaimer swing mechanism positioning device. The laser scanning device, the PLC control system, the pitching positioning device, the level gage and the stacker-reclaimer swing mechanism positioning device are all connected with the data processing device; a three-dimensional coal pile model is generated according to the coal pile scanning information; and the system is further used for obtaining a material piling and taking task and generating a stacker-reclaimer control signal according to the material piling and taking task, the real-time pitching angle of a material taking arm, the rotation angle of a material piling arm and the material taking arm, the material piling height, the material taking height and the material level distance, and the PLC control system is used for controlling the stacker-reclaimer to complete the material piling and taking task according to the stacker-reclaimer control signal. The unattended operation of the stacker-reclaimer in a coal yard can be realized, the investment of labor cost is reduced, and the personal safety is guaranteed.

The invention relates to a polymer lithium battery with good heat dissipation performance, which comprises a placing frame, a sealing plate is fixed at the left end of the placing frame through screws, ventilation grooves are uniformly formed in the sealing plate, battery cells wrapped by aluminum-plastic composite films are uniformly placed in the placing frame, and the battery cells are connected in series through wires. According to the invention, the following problems existing in the combination and use process of the existing polymer lithium battery can be solved: a, directly binding the existing polymer lithium batteries together during combined use, and wrapping by using an aluminum-plastic composite film; b, the polymer lithium batteries which are combined and wrapped together cannot be quickly separated when the temperature of the batteries is high, only spontaneous combustion cooling of the polymer lithium batteries can be waited, the cooling speed is low, and consumed time is long.

The invention discloses a hollow plastic building template capable of being conveniently replaced. The hollow plastic building template comprises a template, wherein a leakage hole is formed in the outer surface of the upper end of the template; a baffle is movably arranged on the outer surface of the rear end of the template; a first connecting rod is fixedly arranged on the outer surface of oneside of the template; a fixing plate is fixedly arranged on the outer surface of one side of the first connecting rod; a fixing hole is formed in the outer surface of the front end of the fixing plate; and a second connecting rod is fixedly arranged on the outer surface of the other side of the template. The hollow plastic building template capable of being conveniently replaced disclosed by the invention is provided with a buffer mechanism, a spherical bag and a threaded rod, so that expanded concrete can be prevented from being directly contacted with the template, and the surface of the template is prevented from being damaged. Calcium carbonate is arranged in the spherical bag, the calcium carbonate is heated to decompose and is capable of absorbing heat, and the template can be prevented from being heated to deform. Reinforcing ribs can be conveniently removed and can further be recycled, and excellent application prospects are brought.

The invention discloses a dust control method of a power plant coal transport system for reducing the concentration of dust generated by the coal transport system. The coal transport system comprises guide chute and a coal transport belt, wherein one end of the coal transport belt is located in the guide chute. The method comprises the following steps: reducing the positive pressure of an air flow in the guide chute; and intermittently spraying a non-working surface of the coal transport belt outside the guide chute and non-sealed places of rollers at two ends, wherein the guide chute is of a sealed structure. Based on the fully-sealed guide chute, various dust removal manners such as unpowered, micro-powered and high pressure water spray dust removal manners are organically integrated in a process system, so that the system can be suitable for dust removal requirements of coal types with small granularity of fire coal and high cohesiveness in different humidity conditions, and has the advantages of good dust removal effect, low energy consumption, small maintenance quantity and the like. After implementing the project, the site dust concentration of the coal transport system is reduced to be less than 4mg / m3 which satisfies the requirement on the work site dust concentration of the state.

The invention discloses an outdoor oil-immersed transformer convenient for arranging and fixing wire harnesses, and the transformer comprises an oil-immersed transformer body, a first sliding block, a connecting plate, a second fixing plate and a third sliding block; a rainproof plate is installed on the oil-immersed transformer body, the first fixing plate is installed on the rainproof plate, and a winding plate is installed on the first fixing plate; meanwhile, the first fixing plate is connected with the threading plate, the first sliding block is attached to the threading plate, the first sliding block is connected with the clamping plate, and a second sliding block is installed on the clamping plate. According to the outdoor oil-immersed transformer convenient for arranging and fixing the wire harness, oil-immersed transformer bodies of different sizes are clamped and fixed by moving a sleeve, a laminating plate is fixed in two ways, the wire harness is wound by a winding plate, and then the wire harness is clamped and fixed by a clamping plate; therefore, the wiring harnesses are arranged and fixed, and the situation that the wiring harnesses are disordered is avoided.

The invention discloses a solar electronic public traffic device which comprises a device body. A supporting column is arranged at the end of the device body, and the supporting column is sleeved withthe end of the device body in an embedded mode and fixedly connected with the device body through screws. A handle is arranged at the top of the supporting column, and the handle is horizontally laidon the supporting column and welded to the supporting column. The bottom of the handle is provided with an operation panel, and the bottom end of the operation panel is provided with a fixing plate.The middle of the fixing plate is provided with a fixing screw knob, and the operation panel and the fixing plate are fixedly connected through the fixing screw knob. A canopy is arranged at the top end of the device body, the device body is sleeved with the canopy in an embedded mode, and the canopy is fixedly connected with the device body through bolts. According to the solar electronic publictraffic device, a solar panel is additionally arranged and can absorb heat to supply working energy to the device body, and thus energy conservation and environmental friendliness are achieved.

The invention discloses a detachable flame-retardant automobile battery shell, which includes a base, a fixed frame is arranged on the base, and a first fixing device is arranged on the fixed frame for rotation. The first fixing device includes a cylinder, a rotating rod, a rotating seat, a second A cooling box, a second cooling box, a mounting seat, a screw rod and bolts, one end of the cylinder is rotated on the rotating rod, the upper end of the rotating rod is fixedly connected with a rotating seat, the inner bottom of the rotating seat is provided with a first cooling box, and the first cooling box There is a second cooling box on the top, so that the battery can be quickly fixed and installed, so that the battery can be cooled from multiple sides, avoiding the spontaneous combustion caused by excessive temperature, so that the battery can be effectively flame-retardant, and at the same time improve the battery life. The ventilation effect avoids the situation that the temperature of the storage battery is too high during operation, and the invention is simple in operation, strong in practicability, and convenient for popularization and use.

The invention relates to the technical field of environmental protection, and discloses a treatment method of high-concentration phosphorus-containing soil. The method comprises the steps that firstly, the ground surface of a phosphorus-containing pollution site is cleaned up, an in-situ injection point position is determined according to the distribution condition of phosphorus pollution in soil, and the injection depth is larger than the phosphorus pollution depth; then a stabilizing agent is injected into the phosphorus-polluted soil at high pressure through an injection pipe, in-situ stirring is conducted on the soil through a stirring head, normal-temperature maintenance is conducted for 1-7 days, and finally excavation and tail end treatment are conducted. The activity of yellow phosphorus is reduced by adopting in-situ pretreatment and stabilization reaction, so that the safety and environmental risks caused by direct excavation and exposure of phosphorus-containing soil in air are avoided; besides, soil disturbance can be reduced through high-pressure injection and in-situ stirring, and large-area contact between phosphorus-containing soil and air is avoided; in addition, a colloidal layer is formed after the stabilizing agent reacts with yellow phosphorus on the soil surface for maintenance, so that air is isolated and yellow phosphorus is prevented from spontaneous combustion, and therefore the effect of reducing the activity of yellow phosphorus in the pretreatment stage is achieved, and environmental problems generated in the excavation process are reduced.

The invention discloses a power transformation instrument transformer group with a protection function. The power transformation instrument transformer group comprises a substation, wherein a fireproof layer is arranged on the inner side of the substation in a packaging manner; the inner side of the fireproof layer is fixedly connected with a dustproof net; the upper end of the dustproof net is fixedly connected with a transformer; a baffle is fixedly connected in the middle position of the lower surface of the dustproof net; the lower end of the baffle is fixedly connected with the internal lower end of the substation; the internal lower end of the substation is fixedly connected with a motor seat; the upper end of the motor seat is fixedly connected with a motor; the motor is connected with the transformer through a circuit; each port position of the motor is connected with a blade through a shaft separately; ventilating openings are formed in the internal lower end of the side surface of the substation and the internal lower end of the side surface of the fireproof layer; and the lower end of the substation is fixedly connected with a base. The power transformation instrument transformer group with the protection function has complete function, higher safety and can reduce occurrence of safety accidents.

The invention relates to the technical field of machining, and discloses a numerical control machine tool for mining machinery processing. The numerical control machine tool comprises a tool turret body, a tool changing motor is fixedly mounted on the back surface of the tool turret body, an output shaft of the tool changing motor penetrates through the tool turret body to extend to the front surface of the tool turret body, a main shaft is arranged on the front surface of the tool turret body, a tool holder is fixedly mounted on the extension of the main shaft, a power gear is mounted on theright side of an interlayer between the tool turret body and the tool holder, a transmission gear is mounted on the left side of the interlayer between the tool turret body and the tool holder, and amilling motor is fixedly mounted on the top of the tool turret body. According to the numerical control machine tool for mining machinery processing, a layer of sealed cooling cabin is arranged insidea rear shell, circulating water communicates inside the cooling cabin, the cooling water continuously circulates and carries away heat inside a tool turret in the working process of a machine tool, so that the low-temperature working environment of tool turret equipment is guaranteed, and the condition that spontaneous combustion occurs inside the tool turret due to excessive heat accumulation isavoided.

The invention provides a lithium battery with a protection function, and relates to the technical field of lithium batteries, and the lithium battery comprises a box body, and a lithium battery body is fixedly installed in the box body; the plurality of protection boxes are fixedly mounted on two sides of the lithium battery body; the fixed box is fixedly mounted at the top of the lithium battery body; the top of the fixed box protrudes out of the upper surface of the box body; and the heat dissipation assembly is arranged in the box body and is used for cooling and dissipating heat of the lithium battery body. According to the lithium battery, through cooperative use of the box body, the protection box and the protection assembly, the capability of resisting external impact force can be improved, meanwhile, when the lithium battery is subjected to strong impact, the direction of the impact force can be changed, and the influence of the impact force on the lithium battery body is reduced; the lithium battery can be powered off when being impacted or under the condition that the temperature in the box body is too high, explosion and spontaneous combustion of the lithium battery are prevented, and the service life of the lithium battery is prolonged.

The invention discloses an intelligent inflatable neck pillow, which relates to the field of furniture, the neck pillow comprises a pillow-shaped air bag, an air pump, a switch module, a pressure relief module used for relieving pressure of the pillow-shaped air bag, a pressure sensor used for detecting the pressure value of the pillow-shaped air bag, and a controller used for controlling on-off of the switch module according to the pressure value. An air inlet of the pillow-shaped air bag is connected with the output end of the air pump through the switch module. The air outlet of the pillow-shaped air bag is connected with the control end of the pressure relief module, the pressure detection end of the pillow-shaped air bag is connected with the input end of the controller through the pressure sensor, and the control end of the controller is connected with the controlled end of the air pump, the controlled end of the switch module and the controlled end of the pressure relief module.Compared with the prior art, through mutual cooperation of the air pump, the switch module and the pressure relief module, automatic inflation of the pillow-shaped air bag and pressure relief and airleakage of the pillow-shaped air bag are achieved, the functions of electric inflation and convenient storage are achieved, and the problems in the prior art are well solved.

The invention discloses a detachable flame-retarding automobile storage battery case including: a pedestal; a fixing frame is arranged on the pedestal; a first fixing apparatus is rotatably disposed on the fixing frame and includes an air cylinder, a rotary rod, a rotary seat, a first cooling box, a second cooling box, a mounting seat, a screw rod and a bolt; one end of the air cylinder is rotatably installed on the rotary rod; the rotary seat is fixedly connected to the upper end of the rotary rod; the first cooling box is located on the inner bottom of the rotary seat; the second cooling boxis arranged above the first cooling box. The storage battery case can be used for quickly installing a storage battery fixedly and is suitable for storage batteries in different sizes. The storage battery can be cooled from multiple sides, so that a problem of spontaneous combustion due to excessively high temperature is avoided, thereby achieving effective flame retarding on the storage battery.Meanwhile, ventilation effect on the storage battery is enhanced, so that the problem of excessively high temperature during operation of the storage battery is prevented. The storage battery case iseasy to use, has good practicability, and is convenient to promote and apply.

The invention discloses an interlocking device applied to raw coal slag discharging of a coal mill. The interlocking device comprises a coal slag channel and a coal slag box which are arranged on the inner side of a shell of the coal mill. A coal slag passageway opening communicating with the coal slag box is formed in the coal slag channel. A coal slag channel flashboard is arranged at the coal slag passageway opening. A slag discharging device body is arranged on the outer side of the shell of the coal mill. The slag discharging device body comprises a supporting frame fixed to the shell of the coal mill. A screw rod is arranged in the supporting frame. One end of the screw rod is connected with the coal slag channel flashboard. The other end of the screw rod is matched with a hand wheel drive mechanism in a threaded manner. A first wire rope pulley block is arranged below the supporting frame. A second wire rope pulley block is arranged below the screw rod. A coal slag sealing door is arranged at a coal slag box outlet. A third wire rope pulley block is arranged on the upper portion of the coal slag sealing door. The two ends of a wire rope are wound around the second wire rope pulley block and the third wire rope pulley block. The middle of the wire rope is wound around the first wire rope pulley block. According to the interlocking device, interlocking of a coal slag inlet and the coal slag box outlet is achieved, the situation that air enters the coal mill, and spontaneous combustion of pulverized coal is caused is avoided, and operating safety of the coal mill is improved.

The invention discloses an electrolytic capacitor polarity detection circuit and a detection device, and belongs to the technical field of circuit detection. The detection circuit comprises a power supply module, a driving module, a voltage measuring module, an electric wave module, a switch module, a polarity detection module and a display module. The power supply module can be used for conveying a power supply; the driving module can accelerate the driving of the power supply energy; the voltage measuring module can detect the voltage of the power supply, and the electric wave module can filter a voltage signal output by the power supply module. The circuit is ingenious in structural design, the voltage measuring module and the polarity detection module are combined, and the problem that the voltage and the electric polarity of a point source cannot be detected when an existing circuit is used is conveniently solved; through the above structure, when the circuit is used, the voltage measuring module is combined with the polarity detection module, so that voltage and electric polarity are detected; therefore, it is ensured that the polarity of the electrolytic capacitor of the circuit does not have problems in use.

The invention belongs to the technical field of machinery, in particular to a controllable discharge safety automatic disassembly device for a waste hard shell lithium ion power battery, Including anexhaust gas filtration tank, an Intake pipe, a check valve, an air cylinder, an Outlet pipe, a suction pipe first pipe, case, a pipe fixing plate, hose, a second pipe, a solenoid valve, a first motor,a slider, a nitrogen tank, a transverse plate, a mounting plate, a funnel, a storage plate, support legs, a waste liquid collection bottle, a filter screen, a support column, a first pressure plate, asecond pressure plate, a case door, a second motor a amounting plate , second motor, a aguide rail mounting pl ate, guide rail, screws, a cutting knife and a screw mounting plate. The disassembly efficiency of the invention is high, As that liquid nitrogen cool the cutting place during the cutting of the power battery, the occurrence of the spontaneous combustion of the battery caused by excessive temperature during the cut is avoided, the battery explosion is avoided, the battery is cut in the box body, the personal safety of the dismantling personnel is facilitated, and the gas filtering mechanism avoids the pollution of the environment caused by the waste gas during the dismantling.

The invention discloses an interlocking device applied to raw coal slag discharging of a coal mill. The interlocking device comprises a coal slag channel and a coal slag box which are arranged on the inner side of a shell of the coal mill. A coal slag passageway opening communicating with the coal slag box is formed in the coal slag channel. A coal slag channel flashboard is arranged at the coal slag passageway opening. A slag discharging device body is arranged on the outer side of the shell of the coal mill. The slag discharging device body comprises a supporting frame fixed to the shell of the coal mill. A screw rod is arranged in the supporting frame. One end of the screw rod is connected with the coal slag channel flashboard. The other end of the screw rod is matched with a hand wheel drive mechanism in a threaded manner. A first wire rope pulley block is arranged below the supporting frame. A second wire rope pulley block is arranged below the screw rod. A coal slag sealing door is arranged at a coal slag box outlet. A third wire rope pulley block is arranged on the upper portion of the coal slag sealing door. The two ends of a wire rope are wound around the second wire rope pulley block and the third wire rope pulley block. The middle of the wire rope is wound around the first wire rope pulley block. According to the interlocking device, interlocking of a coal slag inlet and the coal slag box outlet is achieved, the situation that air enters the coal mill, and spontaneous combustion of pulverized coal is caused is avoided, and operating safety of the coal mill is improved.

The invention relates to a network cable line monitoring device, and relates to the technical field of mechanical equipment, the network cable line monitoring device comprises a line monitoring device main body, the left side of the line monitoring device main body is fixedly provided with an insulating skin sheath, and the right side of the line monitoring device main body is fixedly provided with a data display screen; and a semitransparent lining layer is fixedly installed on the inner wall of the insulating skin sheath, and a copper wire steel belt is fixedly installed on the inner wall of the semitransparent lining layer. Through ingenious design and combination of the data display screen, the data analyzer and the data integrator, the problems that an existing line device can only detect a wire line, cannot analyze and calculate data of a cable network and cannot visually see analysis data values of a cable are conveniently solved; and therefore, the use condition of the cable network can be detected, the cable network can be analyzed and calculated during detection, and the analysis data value of the cable network can be visually seen.

The invention provides a power battery thermal management device and method, electronic equipment, and a storage medium. The power battery thermal management device arranged on a vehicle comprise a naked eye three-dimensional display screen for displaying a naked eye three-dimensional image, a camera module integrated on the naked eye three-dimensional display screen, and comprising an eye trackerused for capturing the eye movement track of a user, a gesture recognition module for capturing a user gesture track, a control module for controlling the naked eye three-dimensional image displayedby the naked eye three-dimensional display screen according to the user eye movement track captured by the eye tracker and / or the user gesture track captured by the gesture recognition module, and a fatigue detection module used for detecting whether the user is in fatigue driving according to the user video acquired by the camera module, and providing an alarm signal in response to the detected fatigue driving of the user. According to the invention, an in-vehicle display device capable of realizing multifunctional multiplexing can be realized.

The invention discloses an engine emission reduction device for monitoring NOx concentration in real time and adjusting oxyhydrogen amount. The device comprises a columnar shell, a cavity is formed in the columnar shell, asbestos fiber felt is arranged in the cavity, positioning holes which are distributed at equal intervals are formed in the outer wall of the columnar shell, refrigeration sheets are fixed to the inner walls of the positioning holes, a metal shell is fixed to the outer wall of the columnar shell, a damping layer is connected to the inner wall of the columnar shell in a sleeved mode, a gasket is bonded to the inner wall of the damping layer, a columnar catalyst is fixedly connected to the interior of the gasket in a sleeved mode, a honeycomb-shaped ceramic carrier is arranged in the columnar shell, and a fixed circular plate is connected to one end of the columnar shell in a threaded mode. According to the device, the asbestos fiber felt is arranged in the columnar shell, heat loss can be effectively prevented, internal temperature rising can be accelerated, the gas reaction rate can be increased, and when the temperature is too high in the reaction process, a switch of the refrigeration sheet is turned on, the interior of the columnar shell is cooled, and the internal temperature can be controlled within a proper range.

The invention relates to the field of coal mine safety, in particular to a warning grading method and a warning method for spontaneous combustion of coal. The coal is prone to spontaneous combustion,and the warning for spontaneous combustion of coal is divided into six grades, namely, grey warning, blue warning, yellow warning, orange warning, red warning and black warning. The warning method includes the following steps: collecting O2, CO, CO2, CH4, C2H4 and C2H6 concentration data; judging the warning grade, and setting a warning threshold as R0, wherein the warning threshold of coal spontaneous combustion can be expressed by the following mathematical formula: R0={[O2]>18% union [CO]>50ppm} intersecting {[O2] belongs to (15%, 18%) union [CO]>100ppm} intersecting {[O2] belongs to (12%,15%) union [CO]>150ppm} intersecting {[O2]<12% union [CO]>200ppm}; and issuing a warning and taking measures according to different thresholds. The spontaneous combustion process of coal can be indicated more accurately and sensitively, and higher preventability is achieved.

The invention relates to a flame-proof express cargo transportation compartment. The flame-proof express cargo transportation compartment comprises a compartment and a vacuum generation device arranged in the compartment. Due to the fact that the compartment of the logistics truck is in a closed environment, in order to further enhance the leakproofness of the compartment, the joints of the side faces of the compartment are further filled with sealants, then the vacuum environment is formed in the compartment through the vacuum generation device, and therefore when no air exists in the compartment, internal goods cannot be burnt, and the condition of spontaneous combustion of goods in the carriage is avoided.