275results about How to "Run smart" patented technology

The invention relates to a multi-sensor fusion method used in an urban long tunnel monitoring system which consists of a sensor system, a collection communication transmittance interface and database storing data; the invention is characterized in that the collection communication transmittance interface is completed by PLC; meanwhile, the collection communication transmittance interface collects analog quantity and digital quantity both of which is output by the sensor system, directly sends the analog quantity and digital quantity to the database of a supervisory computer to be implemented fusion procession; the database outputs signals to man-machine interaction interface and intelligent warning system monitoring communication environment; the intelligent warning system can send out warnings including fire warning, visibility warning, carbon monoxide density warning, traffic volume and vehicle speed warning and light intensity difference warning at tunnel entrance. The invention is characterized in that information collected by a plurality of sensors is fused and urban underground long tunnel can be monitored in real time; the self warning of health condition in the tunnel and the self warning of equipment failure can be achieved so that long time health operation of the tunnel can be guaranteed.

The invention relates to coal mining equipment and specially, relates to a high-efficiency blocking coal shovel. The high-efficiency blocking coal shovel comprises a shovel body. The shovel body comprises a frame. The high-efficiency blocking coal shovel also comprises an impulsion shovel mechanism. The impulsion shovel mechanism comprises a shovel head and an impulsion device. The shovel head comprises shovel teeth and a fixing part. The shovel teeth are installed on the fixing part. A rear part of the fixing part is provided with an impulsion stroke guiding mechanism. The impulsion stroke guiding mechanism is sildingly connected to a guiding sleeve. The guiding sleeve is arranged on the impulsion device and / or the frame. The impulsion device impacts the impulsion stroke guiding mechanism. Only through one impulsion process, the shovel head can complete both coal falling and surface cleaning. The impulsion shovel mechanism is arranged on the shovel body. The shovel body drives the whole high-efficiency blocking coal shovel to walk. Coal mined by the high-efficiency blocking coal shovel is not broken fully. The high-efficiency blocking coal shovel has a high blocking rate and low power consumption, produces a small quantity of coal dust, provides a good work environment, realizes continuous coal mining, synchronously completes both coal falling and surface cleaning, and saves a mass of energy.

The invention relates to an intelligent control technique, and in particular relates to an intelligent air-conditioner control method and system based on a self-adaptive temperature control technique. The method provided by the invention mainly comprises the following steps that: an intelligent air-conditioner acquires environment information, facial images of users and operation records of the users, and extracts feature values; a cloud service platform processes the feature values, stores the feature values into corresponding control maps according to the user features, acquires the feature values of a current user, compares the feature values of the current user with feature values in a data bank, finds out the control map matched with the current user, and transmits the control map to the air-conditioner; and an air-conditioner control module automatically adjust the air-conditioner according to the control map. The intelligent air-conditioner control method has the beneficial effect of enabling the intelligent air-conditioner to provide individual temperature adjustment services according to the different users and different situations, so that the air-conditioner can be operated more simply and work more intelligently, and is closer to the life of people. The intelligent air-conditioner control method is particularly applicable to the intelligent air-conditioner.

The invention discloses a train energy-saving operation method based on multi-objective optimization, and the method comprises the steps: firstly obtaining the speed limiting information and slope information of each operation section in a train operation line, and then building an elementary substance point model of a train according to various basic information of the train; respectively calculating traction energy consumption Et, braking energy consumption Er and coasting energy consumption Eb of the train in each operation interval by utilizing the simple substance point model so as to construct a multi-target optimization model of the train; solving the objective function F (x) by adopting a multi-objective genetic algorithm to obtain a Pareto optimal solution set of each operation interval; and finally, obtaining an optimal speed curve from the Pareto optimal solution set corresponding to the next operation interval according to the time difference between the actual operation time when the train arrives at the current operation interval and the operation time specified by the time table. According to the train energy-saving operation method, train operation can be more energy-saving, the late or early arrival problem of the train is solved, and train operation is more intelligent, convenient and comfortable.

Disclosed is a small-sized switched reluctance motor converter system. The system is composed of four alternating main circuits in two sets, an output circuit, a first subsidiary circuit and a secondsubsidiary circuit; the four main circuits alternately output direct current to the output circuit for direct rectify output, and the inversion link is omitted; the first subsidiary circuit can work in both directions, has the three main functions of charging a storage battery, strengthening the excitation and feeding energy backwards, and is flexible and adjustable; the second subsidiary circuitassists in achieving the three main functions and can achieve short-time double-fed power generation control work; a converter can be completely adopted as a motor during running; the system is simplein structure, diversified in function and suitable for complex four-quadrant running fields of small-sized speed-variable wind power, water pumping and energy storage power station integrated motor systems, integration micro-power grids and the like.

The invention discloses a method for achieving temperature control in an elevator car and an elevator system. The method comprises the steps that based on an elevator car controller, a user command isreceived and comprises a temperature control command; based on a temperature sensor, the current temperature in the elevator car is obtained; the magnitude and plus-minus relations between the current temperature and the temperature value in the temperature control command are judged, and based on the magnitude relation and the plus-minus relation, a semiconductor cooler work command and / or an air capacity control command are / or generated; the air capacity control command is sent to a motor driving a cross flow fan to work, so that the motor drives the cross flow fan to work; and the semiconductor cooler work command is sent to a semiconductor cooler, so that the semiconductor cooler works according to the semiconductor cooler work command. According to the method for achieving temperature control in the elevator car and the elevator system, the semiconductor refrigeration and heating effects can be controlled for the elevator car.

The invention belongs to the field of electric bicycle control, and provides an electric bicycle control system based on a CAN bus. The electric bicycle control system comprises a stopwatch unit and units connected with the stopwatch unit. The stopwatch unit is used for receiving an operation instruction of a user and transmitting the operation instruction of the user to the corresponding units through the CAN bus. The corresponding units conduct corresponding operations according to the received operation instruction. The stopwatch unit is further used for receiving operation results and status information fed back by the units to be processed, and meanwhile the processed results are stored and transmitted to an external system. According to the electric bicycle control system, the CAN bus technology maturely and reliably applied in the field of industrial control is introduced into the design of a bicycle, bicycle body equipment is connected together to form a bus network, stability and real-time performance of bus control are brought into full play, and the expandability of the bicycle body equipment is greatly improved, so that functions are stronger, fewer wires are adopted, wiring is more attractive, system operation is more reliable, and the bicycle maintenance cost is lowered; the electric bicycle control system is more intelligent, easier to control and better in riding experience.

The invention discloses a pipeline intelligent collection system for solid waste and domestic garbage, which includes a garbage throwing unit, an automatic recovery unit, a conveying pipeline, centralized collection equipment, a negative pressure power source device and a control center. The garbage disposal unit can classify and recycle garbage, detect multiple indicators in real time, crush, and pre-select ironware, and is equipped with an airtight valve at the connection with the conveying pipeline; the automatic recycling device includes an automatic collection trolley and an intelligent docking device; the conveying pipeline connects the garbage The delivery unit and the central collection equipment are equipped with anti-blocking devices at the climbing, crossing and corners of the pipeline; the control center generates negative pressure in the conveying pipeline by controlling the negative pressure power fan, and collects the garbage from the garbage delivery unit and the automatic collection trolley. Central collection facility. The invention realizes metering recovery and public release, is suitable for use in the Chinese market, and truly achieves high intelligence, full automation, low power consumption, no noise, no blockage, completely sealed operation, zero pollution, and no leakage.

The invention discloses an air conditioner, an air-conditioning draining pump and a control method thereof. The air conditioner comprises the air-conditioning draining pump and a control module, wherein the air-conditioning draining pump is used for discharging condensate water of an air conditioning unit and can operate at high-gear revolving speed and low-gear revolving speed; and the control module is used for controlling the revolving speed gear of the air-conditioning draining pump according to the operating state of the air conditioning unit. The air conditioner, the air-conditioning draining pump and the control method thereof can lower the noise of the air-conditioning draining pump when the air conditioning unit drains water.

The invention relates to an intelligent integrated fertilization system with capacity of biogas slurry application. The system comprises a water and fertilizer blending module, a water and fertilizerfiltering module, a water and fertilizer conveying module, a field monitoring and control module and an intelligent control module, wherein the water and fertilizer blending module is used for diluting biogas slurry and testing soil for formulated fertilization to meet the nutritional requirement of crop growth; the water and fertilizer filtering module is used for filtering the diluted water soluble fertilizer and the biogas slurry; the water and fertilizer conveying module is used for sufficiently mixing the matched biogas slurry and water soluble fertilizer and conveying the mixture througha pipeline; the field monitoring and control module is used for monitoring field weather information and crop growth information; the intelligent control module can realize automatic generation of anapplication operating account and can automatically control operation of all the modules through neural network and deep learning. The water and fertilizer blending module, the a water and fertilizerfiltering module, the water and fertilizer conveying module and the intelligent control module are highly integrated to an integrated box, labor can be effectively saved, labor intensity is reduced,and the system operates stably, is suitable for various irrigation pipeline systems, can scientifically and efficiently apply the biogas slurry, fertilizer and water and improves irrigation quality and efficiency.

The invention discloses a rail transit traction power supply system which comprises a high-voltage alternating-current power supply bus, a plurality of bidirectional converters, a direct-current powersupply bus for supplying power to a train and a plurality of sets of in-station equipment. One end of each bidirectional converter is connected with the high-voltage alternating-current power supplybus, and the other end of each bidirectional converter is connected with the direct-current power supply bus; and each group of in-station equipment is connected with a high-voltage alternating-current power supply bus. The bidirectional converter is used for connecting the direct-current power supply bus and the alternating-current power supply bus, the magnitude and direction of power output onthe direct-current power supply bus and the alternating-current power supply bus are flexibly distributed, possible network voltage fluctuation is actively controlled and reduced, and meanwhile, voltage conversion, brake feedback, harmonic treatment and reactive compensation are achieved; therefore, the regenerative braking energy recovery efficiency and the traction power supply efficiency are improved, and the green, controllable, safe, efficient and intelligent operation of the whole power supply and distribution network is realized. The invention further correspondingly discloses a controlmethod and system of the rail transit traction power supply system and related assemblies.

The invention is applied to the field of electric vehicle control, and provides a 485 bus-based electric vehicle control system. The 485 bus-based electric vehicle control system comprises master equipment and slave equipment; the master equipment is used for receiving an operation instruction of a user and transmitting the operation instruction to corresponding slave equipment through a 485 bus; the slave equipment performs a corresponding operation according to the received operation instruction; and the master equipment is also used for receiving an operation result and state information fed back by the slave equipment, processes and displays the operation result and the state information, and simultaneously stores and transmits a processing result to an external system. According to the invention, the mature and reliable 485 bus technology applied in the field of industrial control is introduced into design of a bicycle; one master node and a plurality of slave nodes are connected to form a bus network; the stability and the instantaneity of bus control are sufficiently played; furthermore, the expandability of vehicular body equipment is greatly expanded; therefore, the functions are strong; wiring is less and more attractive; the system is more reliable to operate; the maintenance cost of vehicles is reduced; and because of being more intelligent, the system is simpler to operate and control and better in riding experience.

The invention relates to mine coal extraction equipment and specifically relates to an efficient blocking coal shoveling device. The coal shoveling device comprises a device body and an impact shovel mechanism, wherein the device body comprises a rack, the impact shovel mechanism comprises a shovel head and an impacting device, the shovel head includes shovel teeth and a fixing part, the shovel teeth are installed on the fixing part, an impact stroke guide rod is arranged on the rear portion of the fixing part and is in a sliding connection with a guide sleeve, the guide sleeve is arranged on the impacting device and / or the rack, the impacting device can impact the impact stroke guide rod, an impacting action enables the shovel head to have a one-time completion of a coal blanking and a surface cleaning, and the impact shovel mechanism is arranged on the device body which drive a whole device to move. By means of the efficient blocking coal shoveling device, extracted coals are not subjected to a sufficient crushing, so that blocking material rate is high, power consumption and coal dusts are small, work environment is good, a continuous coal extraction and the one-time completion of the coal blanking and the surface cleaning are achieved, and a large amount of energy is saved.

The invention relates to a measuring tool, particularly to an open channel water meter based on the stage-discharge relation. A storage battery is arranged at the top of a support, and a solar panel is arranged on and connected with the storage battery; a probe of a pressure type water level sensor is fixed in an irrigation area open channel; and the pressure type water level sensor is connected with an input end of a control box connected with a computer terminal. A novel method for measuring the water volume in the irrigation area open channel is provided, possibility is provided for irrigation water by metering is provided, and irrigation management is facilitated. The existing method of measuring flume and weir flow measurement is improved, the flow and the irrigation water are calculated according to the stage-discharge relation, head loss is avoided basically, and the gravity irrigation area in irrigation areas can be enlarged. The water meter has the advantage of intelligent operation, the needed electric energy comes from solar energy, additional arrangement of lines is not needed, automatic operation can be achieved, and workers in the irrigation areas can read the irrigation water from computer terminals to guide irrigation decisions.

The invention relates to a mixing ventilation and gas-exchanging device, which consists of an inlet air part, a signal detection analysis and conversion processing part, an exhaust air part, a transmission part and a receiving and execution part. The inlet air part is an air inlet; the signal detection analysis and conversion processing part consists of a detector and a processor; the transmission part is a wireless transmission device; the receiving and execution part consists of a wireless terminal, a frequency conversion controller and an exhaust fan; the exhaust air part consists of an air outlet and an exhaust fan; an output end of a probe is connected with the processor, and an output end of the processor is connected with the wireless transmission device which is connected with the wireless terminal through wireless signals; the wireless terminal and the frequency conversion controller are connected, and the frequency conversion controller is connected with the exhaust fan. By detecting the thickness and the humidity of indoor carbon dioxide, and utilizing the wireless transmission to control the operation condition of the exhaust fan, the device realizes mutual conversion of natural ventilation and mechanical ventilation, thus meeting such requirements as energy conservation, improvement of air quality and thermal comfort condition, reduction of transport cost of air conditioner as well as prolonging service life of facilities etc.

The invention discloses expressway distributed photovoltaic-storage-charging AC-DC hybrid microgrid self-service charging stations which are arranged on two sides of an expressway respectively. Each station mainly includes a power generating side and a load side; the power generating side includes renewable energy generation systems, energy storage stations and a direct-current bus, the output ends of the renewable energy generation systems are connected to the direct-current bus via DC-DC converters having a maximum power tracking function, and the energy storage stations are connected with the direct-current bus via bidirectional DC-DC converters; the load side includes dual-mode AC-DC charging piles and an alternating current bus, the direct-current bus is connected with the alternatingbus via DC-AC converters; the direct-current buses of the stations on opposing side of the expressway are connected via an energy mutual supply line. A photovoltaic-storage-charging distributed AC-DChybrid microgrid is established herein; relay charging is provided for new energy vehicles running on inter-city roads or on expressways for long range; the application problems that new energy vehicles have low storage battery energy density, dependence on grid construction, 'short driving range' and the like are solved.

The present invention discloses a network multimedia player system capable of providing a memorandum function, including a time recording module, a user define module, a memorandum recording module, and a display conversion module. the invention also discloses a network multimedia player method capable of providing a memorandum function, including steps: a1, an user opens the memorandum recording module when using the network multimedia player; a2, the user invokes the user define module in the memorandum recording module directly; a3, the user writes a memorandum and the related memorandum information through the user define module, the memorandum recording module preserves the write-in memorandum and the related memorandum information. By means of the invention, it is capable of prompting a relevant matters to the user in time according to corresponding setup and define, so as to achieve an aim of numeric household intelligent.

The invention discloses a cleaning-free intelligent security monitoring camera, and relates to the technical field of security monitoring. The cleaning-free intelligent security monitoring camera comprises a guide rail, mounting devices are fixedly mounted at two ends of the guide rail, a self-lubricating device is fixedly mounted in the middle of the guide rail, and energy storage devices are fixedly mounted on the front and rear surfaces of the left side of the guide rail; a driving device is fixedly mounted on the right side of the guide rail right end mounting device, a DSP controller is fixedly mounted at the top of the driving device, a lead screw is rotatably connected to the interior of the guide rail through a ball bearing, the right side end of the lead screw is fixedly connectedwith the output end of the driving device, and a sliding device is in threaded connection with the surface of the lead screw. By arranging mounting blocks and hanging plates, fastening bolts can be conveniently connected into the threaded through holes in a threaded mode, so that the camera is hung and mounted at the top of the position needing to be monitored, the ground below the camera can beconveniently monitored, and meanwhile the camera is convenient to disassemble and assemble.

The invention relates to a detection circuit and a detection method for an output signal of a pressure sensor. The detection circuit is characterized by comprising a singlechip, a detection circuit and a pressure sensor circuit, wherein the detection circuit receives the output signal of the pressure sensor, the signal is transferred to the singlechip after being processed by the detection circuit, and the singlechip confirms the input signal by a detection method. The detection method comprises a filter conversion period and a singlechip detection confirming processing period; and the singlechip detection confirming processing period includes five mutually correlative sub-periods consisting of a washing water level detection period, a washing pump fault detection period, a filter screen blocking detection period, a static water pressure reading period and a filter screen blocking processing period. The detection circuit and detection method for output signal of pressure sensor has the advantages of being capable of preventing a heating tube being burned without water caused by the fault of the washing pump, so that safety of a dish-washing machine is enhanced, and the fault of the dish-washing machine is prompted so as to be convenient to maintain; therefore, the dish-washing machine can operate more humanly and intelligently, the wash rate of the dish-washing machine is enhanced, the heating tube can be prevented being burned without water caused by the complete blocking of the filter screen, and the safety of the dish-washing machine is improved.

The invention provides an intelligent sailing / remote control unmanned working boat used for fishing of the fishery to overcome deficiencies in the prior art. The intelligent sailing / remote control unmanned working boat used for fishing of the fishery comprises a power unit, lamp cabins and an unmanned boat body. By adoption of the intelligent sailing / remote control unmanned working boat with the functions of automatic sailing, intelligent navigation and full-automatic operation of boat equipment, manual fish luring on the sea is replaced, the intelligent sailing / remote control unmanned working boat is specially used for light seining fishing operation, personal life safety risks existing in traditional operation are fundamentally eliminated, and benefits of fishing of the fishery are remarkably improved; and the light seining fishing operation mode is fundamentally changed, light luring fishing boats boom, benefits of fishermen are finally improved, and the marine resources and the marine environment are better protected.

The invention discloses a control method and device of an integrated controller. The method includes the steps that a command for starting a linkage mode is received; under the condition that the command is received, a first target device is connected with a second target device in a paired manner; and linkage control over the first target device and the second target device which are connected in the paired manner is achieved. The control method and device solve the technical problem that in the prior art, the intelligent running efficiency of an air-conditioner and a new draught fan is lower.

The invention discloses a portable suspension conveying system. The portable suspension conveying system comprises a rail system, a accumulating and placing cart set and a control system. The rail system comprises a linear conveying section, a traverse moving device, a switch device and a rotating device which are supported by a steel structure frame. The linear conveying section comprises a straight rail and a traction transmission device. The straight rail comprises a reinforcing beam and a C-shaped rail which are arranged in parallel. A connecting beam is vertically arranged between the reinforcing beam and the C-shaped rail. An opening of the C-shaped rail faces downward. The accumulating and placing cart set comprises a bracket. The top end of the bracket is provided with two roller sets symmetrically. Upper rollers of the roller sets roll along the C-shaped rail. The lower portions of the roller sets are connected with the bracket through center shafts. The roller sets can rotatealong the center shafts. A novel conveying device thought that multiple operation modes of accumulating, placing and continuous operation on the same production line at different running speeds are achieved is provided, products can be conveyed or assembled in a small space, rotation is more convenient in the conveying process especially, and the conveying combination is more flexible.

The invention discloses chlorine treatment equipment of an acidic etching solution recovery system, a method, a control system and a control method. The design key points of the design include: a dissolution absorption cylinder (1), a ferrous chloride absorption device (2), a liquid alkali washing tower (3), a chlorine gas pipeline (6), a first jet device (7), a first gas pipeline (9), a second gas pipeline (10), a ferrous chloride regeneration device (4), a vacuum volatilization device (5), and a second jet device (14). The invention aims to provide the chlorine treatment equipment of an acidic etching solution recovery system, the method, the control system and the control method, and can effectively treat chlorine.

The invention discloses a heavy-duty car retarder integrated control method. The method comprises the following steps: 1, after the finished car retarder function is started, firstly, detecting whether an intelligent retardance switch is activated or not, if yes, entering the intelligent retardance function, and if not, entering step 2; 2, detecting whether a retarder handle is broken down or not, if not, entering the handle control function, and if yes, entering step 4; 3, when the situation that retardance braking intelligent termination conditions are met is detected, entering step 4; 4, closing the finished car retarder function. According to the heavy-duty car retarder integrated control method, integrated control is conducted from the angles of finished car power assembly management, braking system integration and the like so that the intelligentization, safety, convenience and the like of the retarder functions can be expanded, and by means of the method, a heavy-duty car retarder can operate in a more effective, more convenient and faster, more intelligent and safer mode.

The invention belongs to the technical field of automatic water fire extinguishing systems in fire-fighting water supply and discloses automatic end water-test equipment of an automatic water fire extinguishing system. A manual valve, a pressure sensor, a pressure gage, an automatic opening valve and an end water-test joint are sequentially connected to an automatic water fire extinguishing water supply pipeline in the water flow direction. A pipeline connecting piece is disposed at the front end of the water flow direction of the manual valve. A housing wraps the pressure sensor, the pressure gage and the automatic opening valve which are combined into a whole. A pressure sensor observation window, a pressure and valve opening observation window and a housing door opening button are disposed on the housing. The automatic end water-test equipment of the automatic water fire extinguishing system achieves the functions of automatic pressure testing of end water test of the automatic water fire extinguishing system, monitoring and controlling, pressure information acquisition, and information transmission and also achieves the function of pressure displaying. A displayed pressure value and the opening state of the valve can be observed outside the housing of the automatic end water-test equipment. The automatic end water-test equipment of the automatic water fire extinguishing system is connected to the most unfavorable position of the automatic water fire extinguishing system.

The invention relates to a road repair quantitative positioning data sending platform and method, and the platform comprises a data communication interface which is used for sending a field marking image and the current satellite positioning data of a road driving tool to a far-end road supervision server; and quantitative detection equipment which is used for executing the following processing oneach target area: estimating the volume of concrete required for filling the target area based on the area proportion of the target area occupying the equalized image, the imaging focal length of theroad imaging mechanism and the imaging depth of field of the road crack corresponding to the target area. The road repair quantitative positioning data sending platform and method are intelligent inoperation and convenient to use. Due to the fact that the auxiliary detection tool is adopted to detect each crack of the road surface and quantitatively confirm the concrete for repairing, a reliableapplication tool is provided for a road maintenance department.

The invention relates to the technical field of air conditioner control, and discloses equipment, a system and a method for controlling an air conditioner. The equipment comprises a receiver used for receiving preset commands for running parameters in a plurality of time periods, and a processor used for controlling the running of the air conditioner in the plurality of time periods according to the preset commands. According to the equipment, the system and the method, which are disclosed by the invention, the running parameters in the plurality of time periods are set by taking time as nodes, thus the air conditioner is capable of automatically entering running in the next time period after finishing running in one time period according to the set running parameters, and then automatic change for the running of the air conditioner is realized, and the running of the air conditioner is more humanized and intelligent.

The invention relates to a modular two-dimensional elevator group and an operation control method thereof. The modular two-dimensional elevator group comprises a plurality of lift cars capable of switching movement between a horizontal hoistway and a vertical hoistway, and the lift cars are provided with safety brake systems which include brakes, emergency brakes, anti-power-outage safety plug locks and electromagnetic lock magnetic suction pieces. The lift cars are driven by a linear power group, and steering of movement of the lift cars in the horizontal or vertical direction is achieved through steering joints. The modular two-dimensional elevator group is improved based on an existing lift car, and the cordless operation is realized. The two-dimensional coordinate node positioning technology, the big data interaction technology and the modular numerical control management technology are combined, and the lift cars are controlled to operate in a two-dimensional coordinate mode through a general control machine to meet the elevator usage requirements of high-rise buildings. Through the design of multiple safety protection systems, the elevator operation efficiency and safety aregreatly improved.

The invention discloses an gas supply device of an gas station. The gas supply device comprises a unloading platform, wherein one side of the unloading platform is provided with a unloading hose I, the unloading platform is connected with a gas storage tank, the gas storage tank is connected with a plunger pump, the plunger pump is connected with a high-pressure purifier, the high-pressure purifier is connected with a sequence control disc, the sequence control disc is sequentially connected with a gas storage device, a gas selling machine, a discharging gas recycling device and a pressurizingmachine, the pressurizing machine is connected with a gas discharging column, and a unloading hose II is arranged on one side of the gas discharging column; an intelligent monitoring device is arranged on the gas selling machine, a low-temperature stop valve is arranged between the unloading platform and the gas storage tank, a ball valve is arranged between the high-pressure purifier and the sequence control disc, and check valves are arranged between the sequence control disc and the gas storage device, between the sequence control disc and the gas selling machine, between the sequence control disc and the discharging gas recycling device, and between the sequence control disc and the pressurizing machine. The gas supply device has the beneficial effects that the equipment utilization rate of the gas station is improved, the economic benefit is increased, and the important social benefit is increased.