34results about How to "Achieve extinguish" patented technology

The invention provides an intelligent terminal. The intelligent terminal comprises an on-off key which is a toggle on-off key. When the on-off key is toggled to a starting-up position from a shutting-down position, the intelligent terminal is switched to a started-up state from a shut-down state; in the started-up state, the on-off key is pressed one time, and a screen is switched into a turned-off state from an awakened state or is switched to the awakened state from the turned-off state. When the on-off key is toggled to the shutting-down position from the starting-up position, the intelligent terminal is switched to the shut-down state from the started-up state; in both the started-up state and the shut-down state, the intelligent terminal is in a non-powered-off state. When the on-off key is at the shutting-down position, the intelligent terminal is in the shut-down state; when the on-off key is at the starting-up position, the intelligent terminal is in the started-up state, and in the started-up state, the on-off key is pressed to awaken or turn off the screen. Starting-up or shutting-down of the intelligent terminal and awakening or turning-off of the screen can be easily achieved in a simple mode without performing the movements of 'transient pressing', 'long-time pressing' and 'rapid releasing' which need to be distinguished, and therefore operation convenience is brought to children and old people.

The invention discloses a movable power cable fire simulation test platform, including a movable box body, cables, a fire source device, a temperature measuring device, a fire extinguishing device, agas measuring device, and a dust-fume gas purification device, the cables, the temperature measuring device, the fire source device, the fire extinguishing device and the gas measuring device are arranged in the movable box body, the fire source device is used for applying a fire source to burn the cables, the temperature measuring device is used for monitoring temperature data of the cables, thegas measuring device monitors and obtains gas composition data of generated gases during cable burning, and the dust-fume gas purification device is in communication with the top of the movable box body. The movable power cable fire simulation test platform can reproduce the process of power cable fire, and can move, a test site can be selected according to the actual environment, and a test basiscan be provided for study of power cable fire characteristics.

The invention discloses an intelligent fire-fighting water monitor fire extinguishing system and a fire extinguishing agent thereof. The intelligent fire-fighting water monitor fire extinguishing system comprises a central controller, a video identifying system and a fire-fighting water monitor device. The central controller consists of a host and a monitor display screen. The video identifying system consists of an intelligent detector, a signal processor and a data transmission device. The fire-fighting water monitor device consists of a bracket and a water monitor. The fire extinguishing agent is obtained through the steps that water and polyacrylamide are mixed, heating is conducted, sodium bicarbonate is added, mixing is conducted to dissolving, gelatin, nano-zinc oxide, nano-magnesium hydroxide, ammonium magnesium phosphate, polyethylene glycol, carbonic esters with aromatic groups and protein phenol ethyoxyl polymer are mixed under high-speed stirring, octadecyl benzene sulfonicacid sodium salt is added, a reaction is conducted, and the fire extinguishing agent is obtained. According to the intelligent fire-fighting water monitor fire extinguishing system, fire extinguishing can be achieved in a large space, the structure is simple, graded fire extinguishing of the fire extinguishing agent and water is adopted, the fire extinguishing efficiency is high, the extinguishing agent technology of the intelligent fire-fighting water monitor fire extinguishing system is simple, and the extinguishing agent can cover the surface of burning debris to isolate air.

The invention provides a friction type automobile driving anti-interference device. The anti-interference device comprises an electronic control unit of an automobile, wherein an input interface of the electronic control unit is connected with a piezoelectric sensor, an infrared sensor and a speed sensor; the infrared sensor is arranged in a cab area and is connected with an input end of a single-chip microcomputer of the electronic control unit; the piezoelectric sensor is arranged at a steering wheel at the upper end of a steering column and is connected with the input end of the single-chipmicrocomputer of the electronic control unit; an output end of the single-chip microcomputer of the electronic control unit is connected with an electromagnetic valve, and the electromagnetic valve is connected with a hydraulic cylinder; and a hydraulic cylinder piston of the hydraulic cylinder is connected with one end of a friction plate in a friction type locking mechanism, the friction plateis arranged on a steering shaft connected with the steering wheel, and tension is provided by a spring. According to the friction type automobile driving anti-interference device, when a passenger cardriver encounters the situation that a non-rational passenger pulls and grabs the steering wheel, the steering column can be locked, a hazard warning lamp and a linkage braking system are started, the direction controlling by the driver is assisted, deceleration parking is realized, and driving safety is guaranteed.

The invention discloses a city tunnel automatic starting and stopping LED illumination lamp. The city tunnel automatic starting and stopping LED illumination lamp comprises a shell. A telescopic device is arranged in the shell. A transverse rod is fixedly connected to the bottom end of the telescopic device. The two ends of the transverse rod penetrate through rectangular holes formed in both the two side faces of the inner wall of the shell correspondingly and are fixedly connected with two driving devices arranged outside the shell, and a rotary shaft is fixedly connected with the lower surface of the part, located in the shell, of the transverse rod. The surface of the rotary shaft is sleeved with a bearing. Two vertical rods are fixedly connected to the surface of the bearing and are arranged symmetrically. According to the city tunnel automatic starting and stopping LED illumination lamp, through matching of the telescopic device, the transverse rod, the rectangular holes, the rotary shaft, the bearing, the vertical rods, a threaded barrel, a threaded column and a sliding plate, the LED lamp is installed, thus installation of the LED lamp can be achieved without the need for a wrench used by an installation worker, the workload of the installation worker is reduced, and convenience is brought to the work of the installation worker.

The invention relates to a voice-operated LED (light-emitting diode) night lamp. The voice-operated LED night lamp comprises an LED lamp source, a lamp socket, an external radiating part, a power supply, a control panel, a control module, a voice receiving hole, a voice sensing module and a signal amplifying module. According to the voice-operated LED night lamp, a voice sensing element is utilized to sense voice in each direction, and strength and frequency of a voice signal re analyzed; then, the LED lamp source is controlled to switch on or switch off according to the analyzed results, so that automatic on and off of the LED lamp are realized; frequency is analyzed on the basis of analyzing the voice signal strength, so that the switch-on condition of the LED lamp is more strict, thereby avoiding wrong switch-on of the LED lamp, saving power resources, and realizing the intelligent LED lamp. Besides, the radiating problem of the LED lamp is effectively solved by virtue of the unique radiating structure. The voice-operated LED night lamp is simple in structure and rapid in response, and has the advantages of being low in cost, high in stability, high in safety and intelligent.

The invention discloses an intelligent lamp control system, and the system comprises a touch control circuit, a lighting circuit, a negative ion generation circuit, a wireless communication circuit and a mobile client; the on / off of the lighting circuit can be controlled through the touch control circuit, the lighting or extinguishing of the lighting circuit is realized, and the on / off of the negative ion generation circuit can be controlled through the touch control circuit; when the negative ion generating circuit works, negative ion components in air can be increased, the air quality is improved, the lighting circuit and the negative ion generating circuit are controlled by the mobile client through the wireless communication circuit, lighting and negative ion functions can be intelligently started through the mobile client, so the lighting requirement can be met, and the effect of improving the air quality can be achieved. Besides, the invention also discloses an intelligent lamp,which can realize integration of intelligent lighting and negative ion functions, realizes multifunction of the lamp, and meanwhile, can intelligently start the lighting and negative ion functions through the mobile client, so the use experience of a user on the intelligent lamp is improved.

The invention discloses an anti-explosion fire searching robot. The anti-explosion fire searching robot comprises a mounting seat in which a mounting chamber is formed, wherein two vertical columns are symmetrically arranged in the mounting chamber, and hollow grooves are formed in the two vertical columns; rotating rods are arranged in the hollow grooves; second bevel gears are fixedly connectedto the rotating rods; two ends of the rotating rods sequentially penetrate through the hollow grooves and the mounting seat and are connected to rollers; a fixing frame is fixed at the lower end of the mounting seat; a first servo motor is fixed to the upper end of the fixing frame through a locking bolt; and the tail end of an output shaft of the first servo motor penetrates through the mountingseat and is fixedly connected to a first bevel gear which is engaged with the second bevel gears. The anti-explosion fire searching robot is high in fire extinguishing efficiency during rescuing, andis high in collecting efficiency, so that the rescuing efficiency is improved.

The invention discloses an method for extinguishing and cooling activated carbon in a front discharge hopper of an adsorption tower. The method comprises the following steps: 1) acquiring a thermal imaging image of a material entering a tail imaging area (3) of a vibrating screen (2) by using a thermal imager (1); 2) judging whether the material entering the imaging area (3) has a high-temperature point or not according to the thermal imaging image, and if it is judged that the thermal imaging image has the high-temperature point, recording the finding position of the material at the high-temperature point in the tail imaging area (3) of the vibrating screen (2); and (3) when the materials at the high-temperature point move into a discharge hopper (5) connected with a discharge port of a conveyor (4), carrying out fire extinguishing and cooling treatment on the high-temperature materials through a spontaneous combustion activated carbon extinguishing and cooling device arranged at the upper part of the discharge hopper (5). High-temperature activated carbon is detected at the tail part of the vibrating screen, and is treated in a flowing and falling state when the high-temperature activated carbon falls into the stock bin, so the problem that high-temperature activated carbon particles are difficult to comprehensively detect and treat is solved, and the safety of the system is improved.

The invention discloses a movable type odor removing waste product storehouse. The movable type odor removing waste product storehouse comprises a bottom plate, stand columns, transverse beams, a roof plate and side wall plates; the lower surface of the bottom plate is connected with one group of supporting transverse shafts which are parallel to each other; the two ends of each supporting transverse shaft are connected with bearings respectively; travelling wheels sleeve the bearings; a plurality of stand column seats are arranged on the upper surface of the bottom plate; the bottom ends of the stand columns are mounted on the stand column seats and are fixed by bolts; the top ends of the stand columns are vertically connected with two-way connectors and are fixed through bolts; the transverse beams are horizontally connected with the two-way connectors and are fixed through bolts; the roof plate is mounted on the transverse beams and the side wall plates are mounted on the stand columns; a plurality of odor removing bags are arranged on inner walls of the side wall plates; the odor removing bags are filled with odor removing blocks. The movable type odor removing waste product storehouse is simple and reasonable in structure; the travelling wheels are arranged so that the waste product storehouse is convenient to move; the plurality of odor removing bags are arranged on the inner walls of the side wall plates and are filled with the odor removing blocks so that the effect of removing odor is good and influences on body health of people of odor are reduced.

The invention discloses a cable tunnel micro automatic fireproof door. A door frame is arranged on the outside of a fireproof door body, a groove is separately formed in two sides of the middle part of the top end of the door frame, a fire extinguishing agent is filled into the interior of each groove, a glass cover is mounted on the outside of the grooves, fixing boards are mounted on the upper and lower ends of the two sides of the door frame, the two sides of the interior of the door frame are provided with accommodation cavities, sliding chutes are formed on the top ends of the accommodation cavities, door leaves are mounted on the inner sides of the accommodation cavities, an R280 electromotor is mounted on the lower left corner of the interior of the door frame, one end of the R280 electromotor is fixedly connected with a rotation shaft, a driving gear is mounted on one end of the rotation shaft, a driven gear is engaged with the top of the driving gear, and a screw is mounted inthe middle part of the driven gear. According to the cable tunnel micro automatic fireproof door, the grooves are clamped with the glass cover, operation is simple, installation and disassembly are convenient, the glass cover can be replaced when being damaged after a fire disaster, simplicity and practicability are realized, and later maintenance cost of the fireproof door body is reduced.

The invention discloses an intelligent LED street lamp. The intelligent LED street lamp comprises a lamp post; a telescopic groove is formed in the upper end of the lamp post; a lighting mechanism isarranged in the telescopic groove; a lifting mechanism is arranged in the telescopic groove; the upper end of the lifting mechanism is fixedly connected with the lower end of the lighting mechanism; achamber is formed in the lamp post; the bottom of the chamber is fixedly connected with a driving motor; a driving shaft of the driving motor penetrates through the top surface of the chamber and isfixedly connected with the lower end of the lifting mechanism; a protecting mechanism is arranged at the upper end of the lamp post; the protecting mechanism is electrically connected with the lighting mechanism. According to the intelligent LED street lamp, the lifting of the LED street lamp can be controlled according to certain rules; the protection intensity to a lamp shade and a lamp tube isstrengthened; the actual service life is effectively prolonged and the using effect is effectively improved; and meanwhile, automatic lighting can be realized without a cumbersome control system.

The invention relates to the technical field of fire extinguishment, and in particular relates to a novel environment-friendly polymeric gel water-based extinguishing agent. The novel environment-friendly polymeric gel water-based extinguishing agent is prepared from the following raw materials in parts by weight: 86 to 95 parts of sodium polyacrylate resin, 3 to 7 parts of konjac gum powder, 0.6to 1.2 parts of diatom ooze, 3 to 5 parts of methyl cellulose, 0.1 to 0.5 part of montmorillonite powder, 0 to 0.2 part of titanium white, 0.3 to 1 part of polyacrylamide and 0.1 to 0.5 part of dryingpowder. When being used, the novel environment-friendly polymeric gel water-based extinguishing agent is added into water which is 600 to 1000 times of the mass of the extinguishing agent and is stirred for 3 to 5min to form polymeric gel used for extinguishing, and the extinguishing agent has the advantages of rapid extinguishing time, no remaining fire and no re-ignition; the gel can be naturally decomposed and does not cause influences on the environment.

The invention provides a method for conducting secondary fire extinguishing and cooling treatment on high-temperature activated carbon. The method comprises the steps that firstly, when it is detected that materials entering a vibrating screen (1) have high-temperature points, primary fire extinguishing and cooling treatment is conducted on the high-temperature materials through a first spontaneous combustion activated carbon extinguishing and cooling device arranged on a discharging pipe (3) between the vibrating screen (1) and a conveyor (2); and secondly, when the materials at the high-temperature point move into a discharge hopper (4) connected with a discharge port of the conveyor (2), secondary fire extinguishing and cooling treatment is conducted on the high-temperature materials through a second spontaneous combustion activated carbon extinguishing and cooling device arranged at the upper part of the discharge hopper (4). High-temperature activated carbon at the tail of the vibrating screen can be treated in time through primary treatment of the discharging pipe, the high-temperature activated carbon can be further extinguished and cooled through secondary treatment of the discharging hopper, and therefore the extinguishment and cooling effects of high-temperature materials are ensured, and the safety of the system is improved.

The present invention is a kind of anti-jamming device for frictional automobile driving, which comprises an electric control unit ECU of the automobile, the input interface of the electric control unit ECU is connected with a piezoelectric sensor, an infrared sensor and a speed sensor, and the infrared sensor is arranged in the driver's cab area Inside, it is connected with the single-chip microcomputer input terminal of the electronic control unit ECU, and the piezoelectric sensor is arranged at the steering wheel at the upper end of the steering column, and is connected with the single-chip microcomputer input terminal of the electronic control unit ECU, and the single-chip microcomputer of the electronic control unit ECU The output end of the solenoid valve is connected to the solenoid valve, and the solenoid valve is connected to the hydraulic cylinder. The piston of the hydraulic cylinder of the hydraulic cylinder is connected to one end of the friction plate in the friction locking mechanism, and the friction plate is arranged on the connection with the steering wheel. On the steering shaft, tension is provided by a spring. The frictional car driving anti-interference device can lock the steering column, turn on the hazard warning lights, and link the braking system to assist the driver to control the direction when an irrational passenger pulls and snatches the steering wheel. driving safety.

The invention discloses a movable waste warehouse with a classification function. The movable waste warehouse with the classification function comprises a base plate, stand columns, a cross beam, a warehouse roof and side wall plates. A set of parallel supporting cross shafts is connected to the lower surface of the bottom plate. The two ends of each supporting cross shaft are connected with bearings correspondingly, and the bearings are sleeved with traveling wheels. A plurality of stand column bases are arranged on the upper surface of the bottom plate, and the bottom ends of the stand columns are mounted on the stand column bases and fixed through bolts. The top ends of the stand columns are vertically connected with duplex fittings and fixed through bolts. The cross beam is horizontally connected with the duplex fittings and fixed through bolts. The warehouse roof is mounted on the cross beam. The side wall plates are mounted on the stand columns. Lifting devices are arranged on the bottom plate, a lifting plate is arranged on the lifting devices, and a plurality of classification bins are arranged on the lifting plate. The movable waste warehouse with the classification function is simple and reasonable in structure; the traveling wheels are arranged so that the waste warehouse can be moved conveniently; and the lifting devices, the lifting plate and the classification bins are arranged, and thus the utilization rate of the space in the warehouse is increased.

The invention belongs to the field of safety production, and particularly relates to a fire extinguishing system of a hydrogen pipeline flange joint. The fire extinguishing system comprises a nitrogeninjection device used for injecting nitrogen to the flange joint in the radial direction of the flange, a fire foam injection device used for injecting fire foam to the flange joint in the radial direction of the flange, a temperature monitoring device used for monitoring the temperature above the flange joint, and a control device used for controlling the nitrogen injection device and / or the fire foam injection device to start when the monitored temperature detected by the temperature monitoring device is greater than a preset value. The fire extinguishing system can monitor and automatically extinguish a hydrogen leakage fire at flange joint in real time. A double-extinguishing agent (nitrogen and fire foam) is matched with the system to use, so that double-protection is provide for fire extinguishing, and the success rate of fire extinguishing is improved.

The invention discloses a spiral spark extinguishing multi-cavity silencer. An air inlet pipe is arranged at one end of a silencer cylinder body, an air outlet pipe is arranged at the other end of the silencer cylinder body, a cylinder wall of the silencer cylinder body is of a double-layer structure, a cylinder wall cavity is filled with sound absorption materials, and an inner cylinder wall of the silencer cylinder body is a perforated plate. A front partition plate and a rear partition plate are fixedly arranged in a cylinder cavity of the silencer cylinder body at intervals and divide the cylinder cavity of the silencer cylinder body into a front expansion cavity, a middle expansion cavity and a rear expansion cavity. At least two perforated pipes are supported on the front partition plate and the rear partition plate, one end of each perforated pipe leads to the front expansion cavity, and the other end of each perforated pipe leads to the rear expansion cavity; a spiral flow deflector is fixedly mounted on the front partition plate and extends into a pipe of the air inlet pipe; and an ash collecting opening is formed in the silencer cylinder body and leads to the ash collecting hopper from the interior of the cylinder cavity of the silencer cylinder body. The multi-cavity silencer not only is wide in silencing frequency band and small in exhaust resistance, but also can quickly extinguish sparks.

The invention discloses a toppling protection mechanism of a fuel oil warming furnace, wherein the toppling protection mechanism is simple and reliable in structure and comprises a lamp wick bracket (2), a mounting rack (3), a transmission rod (4), a ratchet wheel (7), a back-stop member (8), a first lever (9) and a toppling block (10). The lamp wick bracket (2) is provided with a lamp wick and a rack (1); two ends of the transmission rod (4), at two sides of the mounting rack (3), are respectively provided with a first handle (5) and a gear (6) which is meshed with the rack (1); the ratchet (7) is arranged on the transmission rod (4); one end of the back-stop member (8) is rotatably connected with the mounting rack (3), and the other end of the back-stop member (8) is butted against teeth of the ratchet (7); one end of the first lever (9) is rotatably connected with the mounting rack (3), and the other end of the first lever (9) is butted against the lower surface of the other end of the back-stop member (8); and a strut of the toppling block (10) passes through the upper surface of the mounting rack (3) and then is connected with the other end of the first lever (9).

The invention provides a cable joint fire monitoring and automatic fire extinguishing system which comprises a wrapping shell wrapping a cable joint in a sealed mode and a fire extinguishing device, the fire extinguishing device is communicated with the wrapping shell through a fire extinguishing pipeline, a detection structure used for sensing a fire is arranged in the wrapping shell, and the detection structure is in signal connection with the fire extinguishing device. The fire extinguishing device collects induction signals of the detection structure and transmits the induction signals to the control unit and the monitoring terminal. The cable fire is extinguished from the source, real-time monitoring is achieved, fire extinguishing is timely, the occupied space is small, fire extinguishing is conducted on multiple cable joints through the same fire extinguishing device according to needs, the fire can be predicted in advance through background monitoring, overhauling treatment is conducted in advance, fire is avoided, and safe and reliable operation of an electric power system is guaranteed.

The invention discloses a self-energy arc extinguish chamber, which comprises a static contact and a moving contact, and further comprises a first supporting piece, a second supporting piece and a third supporting piece, the static contact is arranged on the first supporting piece, and the static contact is provided with a first center hole communicated with the outside; the first supporting piece is provided with a first center hole, the second supporting piece is provided with a second center hole, the moving contact is in sliding fit with the second center hole, and a fixed-volume container communicated with the first center hole and the second center hole is formed between the first supporting piece and the second supporting piece; and the gas supplementing device comprises a variable-volume container communicated with the fixed-volume container, so that gas is supplemented into the fixed-volume container by changing the volume of the variable-volume container when the current is cut off. According to the self-energy arc extinguish chamber, the gas supplementing device is arranged, gas molecules can be supplemented into the fixed-volume container in the current on-off process, the problem that gas pressure and speed are insufficient due to the fact that gas leaks from the static contact is solved, and the arc extinguish capacity of the self-energy arc extinguish chamber is improved.

An emergency lamp switch control circuit is used for controlling an emergency lamp to be turned on or off under the emergency conditions. The emergency lamp switch control circuit comprises a switch tube for controlling the emergency lamp to be turned on or off, a first trigger module for sending out first trigger signals, a second trigger module for sending out second trigger signals, a second driving module for driving the switch tube to be disconnected when receiving the first trigger signals, a first driving module for driving the switch tube to be connected when receiving the second trigger signals and a voltage stabilizing module for providing stable voltage drop between the first driving module and the second driving module. According to the emergency lamp switch control circuit, by utilizing the first driving module to control the switch tube to be connected and utilizing the second driving module to control the switch tube to be disconnected, the emergency lamp connected with the switch tube is controlled to be turned on or off. Accordingly, the working state of the emergency lamp can be controlled when the emergency lamp is in the working state.

The invention provides a power cabinet used for power planning, and relates to the technical field of power construction auxiliary equipment. The power cabinet comprises a cabinet body, a solar cell panel, a carbon dioxide gas tank, a gas supply assembly, an alarm assembly, a sensor assembly and an electromagnetic valve, wherein the sensor assembly, the alarm assembly and the electromagnetic valveare connected with a controller respectively. According to the power cabinet used for power planning provided by the invention, power supply for the whole device is realized by adopting the power cell panel, trouble caused by an external power supply is avoided, the electricity utilization is saved, simultaneously, after abnormity of the sensor assembly is monitored, the electromagnetic valve onthe carbon dioxide gas tank is opened through the controller, the gas supply process of the gas supply assembly is realized, extinguishing for fire is finally realized, stable operation of power facilities is guaranteed, alarm lamplight and alarm sound can be emitted after the abnormity is detected by the sensor assembly through the arrangement of the alarm assembly, and related personnel is convenient to arrive timely for fighting the fire.

The invention discloses a system for automatically extinguishing fire in a long tunnel and an extinguishing method thereof. The system comprises an emergency pipeline, a water tank, a PLC (programmable logic controller) and more than three single-zone extinguishing units, wherein the PLC is connected with each single-zone extinguishing unit via control cables respectively; each single-zone extinguishing unit comprises a nozzle, a pure-water high-pressure pump and an ultrahigh-pressure pipeline; the pure-water high-pressure pump is capable of outputting high-pressure water flow with the pressure intensity being higher than 14MPa; and the nozzle is a water-mist nozzle combining multiple nozzles. The method comprises the following steps: detecting; giving a fire alarm; and controlling the water supply, mist-spraying, backwater and the like by the PLC. The tiny fog droplets formed by the ultrahigh-pressure water flowing through the dedicated water-mist nozzle is adopted to extinguish fire, the tiny fog droplets can be rapidly vaporized when meeting the high-temperature flame and the volume thereof can expand by more than 1,700 times so as to greatly reduce the oxygen concentration of a protection zone and have the strong effects of cooling by vaporization and suffocation by oxygen isolation; and meanwhile, the fog droplets can surround the fire source and further prevent heat radiation and diffusion, thereby achieving the purpose of rapidly extinguishing fire.

The invention is an automatic monitoring device for navaid light state. It includes dimmer powering primary loop, primary loop monitor and light position monitor in each light pit, the primary loop monitor is arranged with a receiving circuit, the light position monitor is arranged with a ejecting circuit. Its character lies in: there has a emitting circuit in the primary monitor, which includes isolating transformer B0, chopped wave signal ejecting circuit, dimmer reset circuit, chopped wave gating circuit, pulse isolating circuit, control instruction counting and coding N circuit, power industry frequency synchronous CP circuit and control switch K; the light position monitor is arranged with a receiving circuit, which including isolation transformer BMN, special transformer BZ, currentmutual inductor Hn, light position monitor power, follow-up peak sampling circuit, function switch circuit, delay circuit, it realizes the double-direction transmission and control of light position and light station with a long distance.