84results about How to "Low modification cost" patented technology

The invention belongs to the field of membrane pollution control, and particularly relates to a modification method for prolonging the service life and performance of a pervaporation membrane in seawater. According to the method, the pervaporation membrane is soaked in deionized water for treatment, so that anticorrosive substances on the surface of the membrane are stripped, the soaked pervaporation membrane is pasted in a membrane assembly, then the membrane assembly is soaked in a tannic acid solution for 60 s, and after soaking is finished, the membrane assembly is taken out. The membrane assembly is taken out, the surface of the membrane is washed with deionized water and then moved into a ferric chloride solution to be soaked for 60 s, finally, the surface of the membrane is washed with deionized water, so that the polyphenol coating is successfully attached to the surface of the membrane, and the unique property of the polyphenol coating becomes the key for prolonging the service life of the membrane; when the PH is lower than 3, most-OH groups in the tannic acid are protonated, so that the polyphenol coating is disintegrated and separated from the pervaporation membrane, and pollutants accumulated on the surface of the membrane are removed at the same time. And subsequently. The surface of the pervaporation membrane is coated with a new polyphenol coating again, so that the service life of the pervaporation membrane is prolonged, and the method also has important significance in reducing the treatment cost of desalinated seawater.

The invention discloses a method for improving data transmission bandwidth through an FPGA. The method comprises the steps that a data packaging module of a detector main control board sends data to be transmitted to a multi-channel GTP sending end in parallel; the data acquisition card receives the data of the corresponding channels through the multi-channel GTP receiving end and recovers Data and KCOD of each channel; an FIFO read-write control module of the data acquisition card writes data recovered by multiple channels into asynchronous FIFOs corresponding to the channels through write logic, and data buffering is carried out; the FIFO read-write control module simultaneously reads cache data of a plurality of asynchronous FIFOs through read control logic to realize cross-clock domain synchronization of multi-channel data; performing CRC (cyclic redundancy check) and processing on the read multi-channel data to obtain synchronous effective transmission data; and a single-channel GTP is upgraded to a dual-channel GTP or a multi-channel GTP, so that the data transmission bandwidth is improved, and normal operation of the FPGA chip is ensured.

The invention discloses a flow battery graphite felt electrode modification method which comprises the following steps: fully mixing and grinding initial powder in a dry environment to obtain first mixed powder; adding a reagent for providing an oxygen source into the first mixed powder in batches, and stirring in a dry environment to obtain second mixed powder; adding a reagent for providing a nitrogen source into the second mixed powder in batches, and stirring in a dry environment to obtain third mixed powder; a graphite felt electrode is covered with the third mixed powder for calcination modification. The modification process and the operation process are simple, and modification can be completed only by preparing the mixed etching powder and then calcining the mixed etching powder. In addition, the modification cost is lower, and chemical reagents, conventional experimental equipment and the like which are low in price are used. Meanwhile, the method is skillful in that the selected O source and N source are strong etching agents, so that the etching effect is remarkably enhanced.

The invention discloses a liquid slagging boiler with a modular combustion chamber and a peak regulation method, and belongs to the technical field of fire coal consumption reduction of thermal power generating units. According to the method, on the basis of a combustion chamber of an existing liquid slagging boiler, the combustion chamber is divided into four modular combustion chambers with the same size, an independent fuel nozzle and an independent draught fan are installed on the outer side of each modular combustion chamber, so that each modular combustion chamber can be independently used, and in the peak regulation process, according to the peak regulation requirement, the modular combustion chambers can be used independently; and determining the use number of independent combustion chambers. The partition screens and the modular combustion chambers in the boiler are of detachable and splicable structures, so that each modular combustion chamber can be detached from the liquid slagging boiler to be replaced and spliced. According to the boiler, operation of the combustion chamber module can be accurately controlled according to actual load requirements, energy consumption is effectively reduced under the low-load condition, and the combustion efficiency is improved; and when the load is increased, sufficient steam supply is ensured.

The utility model provides an electromagnetic regulating valve which comprises a first split body, a second split body, an electromagnetic valve assembly and a fixing part, the electromagnetic valve assembly is located between the first split body and the second split body, and the first split body and the second split body are detachably installed together through the fixing part. And the electromagnetic valve assembly, the first split body and the second split body are assembled together. The electromagnetic regulating valve is further provided with an air inlet hole and an air outlet hole, the electromagnetic valve assembly comprises a body and a valve element, the body is provided with a movable cavity for the valve element to move, the air inlet hole and the air outlet hole are communicated with the movable cavity, and the valve element at least corresponds to the air inlet hole and is used for controlling opening or closing of the air inlet hole. When the air inlet hole is opened, external airflow enters the electromagnetic regulating valve and flows out of the air outlet hole, and when the air inlet hole is closed, the external airflow is prevented from entering the electromagnetic regulating valve, so that the air pressure of the air outlet hole is controlled. In addition, the utility model further provides a vehicle pneumatic brake system and a vehicle.

The invention discloses a battery pulse heating system, a vehicle, a heating method and a computer readable storage medium. The heating system comprises an inverter, a motor, a main diode VD0, a motor controller and a battery management module, and a main switch K0 is arranged between the inverter and the positive electrode of a battery pack E; the positive electrode of the main diode VD0 is connected to the parallel end of the capacitor C of the inverter and the three upper bridge arms, and the negative electrode of the main diode VD0 is connected to the positive electrode of the battery pack E; when the state parameters, collected by the battery management module, of the battery pack E meet preset heating conditions, the battery management module sends a heating instruction to the motor controller; and the motor controller responds to the heating instruction, outputs a driving signal to control a preset target upper bridge arm switch to be switched on, and periodically controls a main switch K0 and a preset target lower bridge arm switch to be synchronously switched on and switched off. The invention has the advantages that the motor bus capacitor C and the stator inductor are simultaneously utilized to store energy, the pulse current passing through the battery pack E is increased, and the heating efficiency is improved.

The invention provides a control device and a control method of a redundant drive motor, the motor is used for carrying out collision unlocking of a vehicle, the control device comprises a controller, a main power source, a switching circuit, a first relay, a second relay, a standby power source and the motor, and the components are sequentially connected to form a main power source drive loop of the motor. When the main power supply is normal, the controller controls power-on or power-off of the main power supply driving loop through the switching circuit so as to drive the motor to rotate or stop rotating, and when the main power supply breaks down and vehicle collision occurs, the controller controls the movable contacts of the first relay and the second relay to be connected with the normally-open static contacts so as to form a standby power supply driving loop of the motor. And the standby power supply drives the motor to rotate. According to the invention, the problem of electricity mixing when the two power supplies drive the same load at the same time is effectively avoided, an original controller does not need to be changed, and the modification cost and the test verification workload of a circuit board are reduced.

The invention relates to the technical field of preparation of modified asphalt, in particular to SBS modified asphalt and a preparation method thereof. The SBS modified asphalt provided by the invention is prepared from the following raw materials: matrix asphalt, a linear SBS modifier 791H, a star SBS modifier 4306 and an auxiliary agent, the auxiliary agent is selected from one or two of aromatic oil, naphtha, a stabilizer and furfural extract oil. The modified asphalt prepared by the invention has high storage stability and ageing resistance, the high-temperature performance and water stability are remarkably improved, and the overall performance is better than that of linear SBS modified asphalt. According to the high-stability SBS modified asphalt disclosed by the invention, the storage stability problem is solved, various properties and pavement performance of the SBS modified asphalt are integrally improved, and the high-stability SBS modified asphalt is simple and convenient to prepare, short in processing flow, simple in equipment, mild in process condition, rapid in production and low in modification cost.

The invention relates to a fluoride-free flame-retardant PC / ABS (polycarbonate / acrylonitrile-butadiene-styrene) resin composition as well as a preparation method and application thereof. The resin composition is prepared from the following components in parts by weight: 70 to 90 parts of PC (Polycarbonate) resin, 5 to 10 parts of ABS (Acrylonitrile Butadiene Styrene) resin, 8 to 12 parts of a phosphazene flame retardant, 2 to 5 parts of a toughening agent, 3 to 5 parts of carbon forming fibers, 1 to 3 parts of a melt reinforcing agent, 0.5 to 1.5 parts of an organic silicon flame retardant and 0.5 to 1.5 parts of an auxiliary agent. The preparation method comprises the following steps: stirring and fully mixing the raw materials in a high-speed mixer, melting and compounding the materials under the conveying, shearing and mixing of screws by a twin-screw extruder, and then extruding, drawing, cooling and pelletizing to obtain the fluoride-free flame-retardant PC / ABS resin composition. Compared with the prior art, the resin composition not only has stable flame retardant property, but also has excellent mechanical property, can meet PFAS prohibition, and is very suitable for being applied to the fields of OA (office equipment), new energy batteries, electronics and electrical appliances, household appliances and the like.

The invention relates to the technical field of die modeling, and discloses a digital modeling method and system for realizing a punching die based on a 3D technology, and the method comprises the steps: determining a basic framework type corresponding to the punching die and a hierarchical structure corresponding to the basic framework type; performing point cloud scanning on an existing product of the punching die to obtain die point cloud data, calculating a material fatigue coefficient corresponding to the punching die, and calculating an assembly fault-tolerant coefficient corresponding to the punching die; carrying out collaborative optimization processing on the initial punching die model to obtain an optimized punching die model, calculating a contour disorder degree corresponding to the optimized punching die model, and formulating an optimal assembly order corresponding to each part in the optimized punching die model; and a blanking force coefficient corresponding to the optimized punching die model is calculated, an optimal assembly path corresponding to each part in the optimized punching die model is planned, digital modeling processing corresponding to the punching die is executed, and a modeling result is obtained. According to the invention, the digital modeling accuracy of the punching die can be improved.

The utility model relates to a closed hydraulic system, a walking system and a rotary system, which comprise a hydraulic pump component connected with a power source, an oil outlet of the hydraulic pump component is connected with an oil inlet of a hydraulic motor component through a first loop, and an oil outlet of the hydraulic motor component is connected with an oil inlet of the hydraulic pump component through a second loop; a third loop is arranged between the first loop and the second loop, and a proportional valve is arranged on the third loop. The proportional valve is additionally arranged to be communicated with the oil way between the hydraulic pump assembly and the rotary motor, the galloping phenomenon of closed system braking can be rapidly solved, the refitting cost is low, control and debugging are easy, and the matched debugging time is shortened.

The invention belongs to the technical field of coke oven coke pushing equipment, and particularly relates to a coke pusher vibration damping device and method.The vibration damping device comprises a mounting base, two mounting plates are fixed to the mounting base, a first rotating shaft is rotationally arranged between the two mounting plates, and the rear end of the first rotating shaft penetrates through the mounting plates to be connected with an output shaft of a first motor; the first motor is fixed to the adjacent mounting plate, the front end of the first rotating shaft penetrates through the mounting plate to be fixedly connected with a driving bevel gear, the driving bevel gear is in meshed connection with a driven bevel gear, the driven bevel gear is fixedly mounted on the second rotating shaft, the second rotating shaft is rotationally mounted on the fixing plate, and the fixing plate is fixedly connected to the adjacent mounting plate. According to the coke pushing head disclosed by the invention, through the cooperation of the first motor and the first encoder, the accurate lowering of the sliding shoe is realized, and the violent collision and impact between the sliding shoe and a hearth every time when the coke pushing head enters the hearth are avoided.

The utility model provides a button cell protection shell with high sealing performance and a button cell, the button cell protection shell comprises a first pole shell and a second pole shell, and pits are uniformly distributed on the surface of the opening end wall of the first pole shell along the circumferential direction; an annular sealing material layer is integrally formed on the surface of the opening end wall of the first pole shell in an injection molding mode, and the sealing material layer covers the concave pit and fills and levels up the concave pit; and an annular sealant layer is also arranged between the inner surface of the second pole shell and the outer surface of the sealing material layer. The button cell protection shell and the button cell using the button cell protection shell have better sealing performance, the cell does not leak liquid after being stored for a long time, a button cell production line is easy to refit, and the refit cost is reduced.

The adsorption type unhooking robot comprises a fixing device and an unhooking mechanical arm, and the fixing device comprises a 3-PRS assembly, an adsorption base assembly, a clamping arm assembly, a worm reducer assembly and a motor lead screw assembly. The device has good adaptability and stability, electronic devices such as an electronic ruler, an ultrasonic distance measuring sensor and a torque sensor are used in the fixing device, and data such as the extending distance of the air cylinder, the distance between the contact block and the corresponding face of the pedal and the clamping force applied to the surface of the pedal by the clamping arm assembly are fed back in real time; convenience is provided for feedback adjustment of the device, and the adaptability of the device is greatly improved. The acting object of the adsorption fixing device is a pedal, and the adsorption fixing device is widely applied to various freight trains and is a standard part, so that the fixing device can adapt to various train types.

The utility model discloses a garbage pool percolate grating plate dredging device which comprises a grating, and a power output mechanism and a dredging executing mechanism are installed on the grating. The dredging executing mechanism comprises a sliding ring, a pushing seat and a pushing head assembly, the pushing head assembly is fixedly installed at the top of the pushing seat, grid holes are formed in the grid, dredging guide rods corresponding to the grid holes one to one are installed in the pushing head assembly, and the sliding ring is arranged on the pushing seat. According to the garbage pool percolate grating plate dredging device, the power output mechanism drives the dredging execution mechanism to do reciprocating motion, a dredging guide rod of the push head assembly dredges a grating, the power output mechanism, the driving dredging execution mechanism and the grating are assembled together through a lead screw and a guide column, the power output mechanism slides up and down on the outer side of the guide column, and the grating is dredged through the dredging execution mechanism. And a stable integral structure is formed, the structure is simple, the refitting cost is low, and automatic control is facilitated.

The application discloses an interactive method for quickly adding a recurring schedule in a waterfall month view. The method involves the following steps: providing a schedule template selector, performing schedule drop, conflict detection and prompt, and differential submission and server verification in the waterfall month view. The application provides a schedule template selector in the user interface, displays a plurality of predefined schedule templates, selects at least one schedule template from them, applies the schedule template to the corresponding date to generate a schedule instance and performs a preview in response to the user's operation on the date grid, performs conflict detection and prompt during the preview, and submits the data to the server in response to the user's submission operation. The application improves the accuracy and efficiency of the interactive operation process of quickly adding a recurring schedule in a waterfall month view, and solves the problems of incoherence, low efficiency and high error rate in the prior art.

The invention discloses a form generation method and device, electronic equipment and a storage medium, and relates to the computer technology, the method comprises the steps that a database table obtained after at least one form component is sequentially configured is received, and the database table comprises a component name and a component identifier corresponding to each form component; for the current form component, determining a to-be-structured field according to the component name, and determining a field type of the to-be-structured field according to the component identifier; and processing the database table based on the to-be-structured field corresponding to each form component and the field type of the to-be-structured field to generate a target form. The method has the beneficial effects that the form generation efficiency is improved, the form modification cost is reduced, and the form configuration efficiency is improved.

This utility model discloses a longitudinal transmission drive pulley for a rice transplanter, belonging to the technical field of rice transplanter accessories. The longitudinal transmission drive pulley of this utility model includes a pulley body, a weed-proof ring on the front end face of the pulley body, and four evenly distributed oblique cutting strips on the front end of the pulley body. This utility model solves the problem that in the actual use of existing rice transplanter pulleys, weeds easily become entangled on the pulley, drive shaft, and adjacent components due to the working environment, affecting long-term operation. This utility model sets the weed-proof ring at the outermost rim. Through the integrally formed weed-proof ring and cutting grooves, when the pulley body rotates, the oblique cutting strips form a rotating cutting surface. Weeds entering the spoke cavity are guided to the top of the oblique cutting strips and cut off as the wheel rotates, preventing weeds from entangled on the spokes and drive shaft, and facilitating adaptation to different working environments.

The application provides a road traffic marking line generation method and device and electronic equipment, and a road spline line of a target road is acquired in advance; a plurality of marking points are included in the road spline line, and the marking points are configured with corresponding marking information; the marking information includes a road position of the generated road traffic marking line and display parameters of the road traffic marking line; the marking information corresponding to the plurality of marking points is read in a preset order, and the road traffic marking line is generated on the target road based on the marking information. In this way, the marking points are set in the road spline line of the target road in advance, and the corresponding marking information is configured for each marking point, the corresponding road traffic marking line can be automatically generated on the target road based on the marking information, the marking line form of the marking line is standardized and unified, the generation efficiency and display effect of the road traffic marking line are improved, and the modification cost of the road traffic marking line is reduced.

The utility model discloses a clapboard, shell subassembly and air handling unit, the air handling unit includes shell, supply air subassembly and heat exchange subassembly, the internal space of shell is divided into first chamber and second chamber by clapboard, supply air subassembly is provided in the first chamber, heat exchange subassembly is provided in the second chamber, the direction from the first chamber to the second chamber is a first direction; the partition plate comprises a first plate body, a second plate body and a third plate body. The two sides of the first plate body are connected with the second plate body and the third plate body respectively. The third plate body and the second plate body are arranged at an interval in the first direction; in the second direction perpendicular to the first direction and the second side edge, at least part of the third plate body is located on the side, close to the first side edge, of the second plate body. According to the air handling unit, when the distance between the air supply assembly and the heat exchange assembly in the air handling unit changes, adaptation can be achieved only by changing the appearance of the partition plate, and the modification cost of the air handling unit is reduced.

The utility model discloses a yarn disc control system, including frame, control unit, yarn disc, driving gear and driven gear, control unit fixedly set up on frame, yarn disc rotatable installation is in on frame, the output shaft of control unit is connected with driving gear fixedly, driven gear is connected with yarn disc, driving gear is engaged with driven gear. This yarn disc control system effectively avoided the problem of yarn disc slip, can stable accurate control yarn disc movement simultaneously, and long service life, and the installation and maintenance are convenient.

The invention provides an agricultural machinery operation breadth automatic measuring and calculating method and device based on a GPS track and a storage medium, and relates to the technical field of agricultural machinery intelligentization. The method comprises the steps of obtaining agricultural machine GPS track data, constructing a running direction angle and an angle difference matrix, classifying track points based on the direction angle and the angle difference matrix, constructing a target track point set, screening effective neighbor points and calculating distances, and forming a distance data list. And carrying out single track point width mean value calculation and track point distribution density weighted mean value calculation to finally obtain an agricultural machine operation width result. The method does not need to additionally install hardware, only depends on the GPS of the agricultural machine, greatly reduces the hardware and modification cost, replaces manual estimation and physical measurement, avoids the problems of personal errors and operation forgetting, improves the measurement and calculation convenience, forms a complete automatic measurement and calculation process, can adapt to different agricultural machines and operation scenes, and is high in universality.

The hydraulic system comprises a central rotary joint, a switching valve group, a dozer blade oil cylinder and a handle switch, and the switching valve group comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve and an overflow valve. The first electromagnetic valve is communicated with the original fast and slow gear oil inlet path, the original cannon oil inlet path and the central rotary joint, the second electromagnetic valve is communicated with the central rotary joint, the original fast and slow gear oil outlet path and the third electromagnetic valve, the third electromagnetic valve is communicated with the dozer blade oil cylinder and the dozer blade oil return path, and the handle switch is electrically connected with the central rotary joint and the switching valve group. The switching valve set is additionally arranged to be matched with the handle switch to control the oil way state, the dozer blade oil cylinder is driven through oil pressure of an original fast and slow gear oil way on the excavator and an original breaking hammer cannon head oil way, the dozer blade is additionally arranged, an original central rotary connector does not need to be replaced, the original structure is guaranteed to the maximum extent, and the refitting cost is reduced. And the stability of the whole machine quality is ensured.

The application discloses a brake control system and method for a multifunctional excavator accessory trailer, which comprises a conventional double-release valve parking brake system, an electromagnetic proportional valve, a vehicle controller, a walking pressure sensor and a hand brake button; the electromagnetic proportional valve is connected in parallel to the air circuit of the double-release valve parking brake system, the flow and speed of air release of the air circuit of the brake system are controlled by adjusting the valve opening, the air release time is further controlled, and finally the multifunctional excavator and the accessory trailer can keep the actions consistent as far as possible during driving; the vehicle controller is pre-configured with the function relationship among the PWM current of the electromagnetic proportional valve, the total mass of the trailer and the accessories and the walking pressure value, the PWM current of the electromagnetic proportional valve is calculated based on real-time data, and the valve opening is further controlled. By adding the electromagnetic proportional valve, the synchronous braking of the excavator and the accessory trailer during driving is realized by the vehicle controller, the modification cost is low, and the structure is simple and easy to operate.

The embodiment of the present invention discloses a credit processing method, device, equipment and medium. The method includes: receiving a target credit request, and obtaining a matching target credit processing logic according to the target credit request; wherein the target credit processing logic is a preconfigured hierarchical parallel-serial processing logic, and the hierarchical parallel-serial processing logic includes serial processing sub-logics between levels and parallel processing sub-logics within levels; executing a credit processing flow that matches the target credit request according to the target credit processing logic; and responding to the target credit request according to the execution result of the credit processing flow. The above technical solution realizes the optimization of the credit process and improves the versatility of the credit process optimization.

The air-cooled cooking utensil comprises a pot body and an inner container, the pot body comprises an outer cover provided with a ventilation window and a heat preservation cover provided with an air inlet, a fan and a fan support of the air-cooled inner container are arranged between the outer cover and the heat preservation cover, and the fan support is arranged corresponding to the air inlet. One end, close to the air inlet, of the fan support is provided with an air outlet part, the fan is obliquely arranged relative to the air outlet part so as to form a flow guide cavity between the air outlet part and the air outlet end of the fan, and the flow guide cavity extends in the circumferential direction of the heat preservation cover and is of a structure with one large end and the other small end so as to guide air in the circumferential direction. According to the air-cooled cooking utensil, the probability that the cold air directly collides with the inner container is reduced, air guiding in the circumferential direction can be formed, the cold air keeps high air speed, the flowing effect of the cold air around the inner container is better, the cold air can make more sufficient contact with the inner container, and therefore the cooling efficiency of the air-cooled cooking utensil is further improved.

The application belongs to the technical field of unmanned aerial vehicle communication, and particularly relates to an unmanned aerial vehicle communication system based on IPv6 multi-homing and multi-path transmission. The system configures independent IPv6 addresses for multiple heterogeneous links of the unmanned aerial vehicle, establishes a binding relationship between the links and the addresses, and generates a service session identifier; address-level state vectors are generated by periodically collecting link state parameters and associating the link state parameters with the IPv6 addresses; the available IPv6 addresses are comprehensively scored based on the state vectors, and the sending proportion of each address is determined according to the service category, so that data fragments are bound to different IPv6 source addresses and sent in parallel; when the link deteriorates, address-level degradation and rapid traffic switching are performed without changing the session identifier; the receiving end uniformly recombines the fragments from the multiple addresses according to the session identifier and the fragment sequence number, and delivers the fragments to the upper layer application. The application improves the communication throughput, stability and continuity of the unmanned aerial vehicle in a multi-link environment.

This invention provides a sloshing-controlled liquid tank, comprising a liquid tank body. The interior of the liquid tank body is divided into several compartments by multiple vertically intersecting sloshing-controlled chamber walls. The peripheries of the multiple sloshing-controlled chamber walls are perpendicularly fixed to the inner wall of the liquid tank body. Each longitudinal sloshing-controlled chamber wall has at least one sloshing-controlled hole. When multiple sloshing-controlled holes are provided, they are arranged vertically and alternately on the same longitudinal sloshing-controlled chamber wall. In each longitudinal compartment of the liquid tank body, there is a sloshing damper that moves horizontally within its compartment along a direction perpendicular to the longitudinal sloshing-controlled chamber wall. The sloshing damper is arranged on the same horizontal central axis as the unique sloshing-controlled hole or the uppermost sloshing-controlled hole. A damper is provided in the unique sloshing-controlled hole or the lowermost sloshing-controlled hole. The sloshing-controlled liquid tank of this invention dissipates the kinetic energy of the sloshing liquid in three stages: spatial partitioning, upper-level turbulence, and lower-level damping, thereby suppressing liquid tank sloshing and making it suitable for multi-section liquid tanks and complex working conditions.

The invention relates to the technical field of aircraft design, in particular to a wired control aircraft modeling unmanned aerial vehicle capable of switching between a manned mode and an unmanned mode. According to the technical scheme, the aircraft comprises an aircraft shell, a replaceable front cabin door, a replaceable rear cabin door and a replaceable lower cabin door. The core is that a wire transmission control system is integrated in a front cabin door which can be opened upwards to form a modularized functional unit. A front door installation table and a wire transmission operation table are arranged on the inner side of the front cabin door, are electrically connected through a plug and a connector on the top and are quickly and mechanically locked and released through an installation mechanism. A sliding rail and a sliding block are arranged in the aircraft shell and used for flexibly positioning the wire transmission operation table and the driver seat. The front cabin door and the rear cabin door are synchronously driven to open and close by a single motor matched with a transmission mechanism. Through modularized replacement of the front cabin door, rapid and safe switching between a manned mode and an unmanned mode is achieved, the problems that a traditional airplane is single in mode and high in refitting cost are solved, and using flexibility and safety are improved.

The utility model belongs to solenoid valve valve position detection technical field discloses a solenoid valve detection structure, include: solenoid valve, be provided with in solenoid valve with cooperate control solenoid valve open / close's valve core or static iron core, apparent magnetic sheet, apparent magnetic sheet installs in solenoid valve's valve core one side or static iron core one side, when apparent magnetic sheet installs in solenoid valve's valve core one side, the head of valve core is installed with the magnet of its side towards apparent magnetic sheet, is used for detecting the moving condition of magnet when valve core is in action through the pattern change on apparent magnetic sheet, when apparent magnetic sheet installs in solenoid valve's static iron core one side, is used for detecting the magnetization situation inside solenoid valve through the color change or pattern change on apparent magnetic sheet, and transparent positioning piece, transparent positioning piece installs on solenoid valve, apparent magnetic sheet installs in the inside of transparent positioning piece. The utility model has reduced the modification cost, and the detection effect is better.