97results about How to "Reduce layout requirements" patented technology

The invention provides an automobile intelligent control method and control system. The automobile intelligent control system comprises an ECU, a voice control subsystem and a touch screen control subsystem. The voice control subsystem comprises a voice collection device and a voice recognition device, wherein the voice collection device is used for collecting voices of a user and enabling the voices to form voice signals, and the voice recognition device is in signal connection with the voice collection device and is used for receiving the voice signals from the voice collection device and analyzing voice control commands from the voice signals. The touch screen control subsystem is used for displaying a control interface and receiving user touch screen motions which form touch motion signals, and analyzes touch control commands according to the touch motion signals. The ECU is respectively in signal connection with the voice control subsystem and the touch screen control subsystem, and is used for obtaining the voice control commands and the touch control commands, and generating control commands sent to an executive component according to the voice control commands and / or the touch control commands. According to the technical scheme, the automobile intelligent control method and control system improve safety and enable a driver to operate an automobile more conveniently.

The embodiment of the invention discloses a method, device and system for calibrating a millimeter-wave radar. The method comprises the steps: acquiring laser radar feature point data which are obtained by information collection of a target object through a laser radar when a vehicle where the laser radar is located moves along a preset track; acquiring millimeter-wave radar data that are acquiredby performing information acquisition on the target object by the millimeter-wave radar when the vehicle moves along a preset track; projecting the millimeter-wave radar data into a laser radar coordinate system by using an initial calibration matrix to obtain millimeter-wave radar data under the laser radar coordinate system; and determining a calibration matrix of the millimeter-wave radar according to the laser radar feature point data and millimeter-wave radar data under a laser radar coordinate system so as to calibrate the millimeter-wave radar by using the calibration matrix. Accordingto each embodiment of the specification, accurate fusion of millimeter wave radar data can be realized.

The invention relates to a silencer for a fuel cell car air auxiliary system. The silencer for the fuel cell car air auxiliary system is composed of an airflow main pipe and a plurality of annular resonant cavities, wherein the annular resonant cavities are sleeved on the airflow main pipe and separated through annular separating plates. Open holes are formed in the airflow main pipe, and the annular resonant cavities are communicated with the airflow main pipe through the open holes. Compared with the prior art, by adjusting the widths, the inner diameters and the number of the annular resonant cavities and adjusting the diameters and the number of the open holes, the silencer can achieve the purpose of broadband and single frequency silencing. By adopting the structure, through different combination forms, broadband silencing effect or single frequency and broadband combining silencing effect can be achieved. The silencer for the fuel cell car air auxiliary system is compact in structure, capable of achieving good silencing effect in limited installation space, small in flow loss, resistant to high temperature and corrosion, and good in dustproof and waterproof effect.

The invention discloses a diesel vehicle low emission control device and method. The diesel vehicle low emission control device comprises an oxidation catalyst (1), a diesel particle catcher (2), a first exhaust temperature sensor (6), a second exhaust temperature sensor (5), an electric heating device (3), a differential pressure sensor (7) and an electronic control device (4). The oxidation catalyst is integrated with an electric heating wire of the electric heating device and encapsulated and formed with the diesel particle catcher, the first exhaust temperature sensor is installed at the front end of the oxidation catalyst, and the second exhaust temperature sensor is installed between the oxidation catalyst and the diesel particle catcher. The differential pressure sensor is connectedto the two ends of the diesel particle catcher. The first exhaust temperature sensor, the second exhaust temperature sensor and the differential pressure sensor are connected with the electronic control device. According to the diesel vehicle low emission control device and the method, the exhaust temperature can be raised, the conversion rate of NOX, HC and CO is improved at the low temperatureafter treatment, regeneration of PM particles is controlled, and the purposes of reducing energy consumption and calibrating the development work amount are realized.

The invention discloses a novel connecting-rod type mechanical arm. The mechanical arm comprises a rack, a horizontal moving assembly arranged on the rack, a lifting assembly and a material taking assembly. The horizontal moving assembly comprises a first horizontal motor, a first horizontal carrying plate, a second horizontal motor and a second horizontal carrying plate, wherein the second horizontal carrying plate is connected with the first horizontal carrying plate in a sliding mode, the first horizontal motor drives the first horizontal carrying plate to move horizontally, and the second horizontal motor drives the second horizontal carrying plate to move horizontally. The lifting assembly is arranged on the second horizontal carrying plate and comprises a lifting motor and a lifting carrying plate connected with the lifting motor in a transmission mode, and the lifting motor drives the lifting carrying plate to ascend and descend. The material taking assembly comprises a mechanical arm body arranged on the lifting carrying plate and at least one suction foot arranged on the mechanical arm body, wherein each suction foot is provided with a vacuum sucker or an electromagnet assembly. The novel connecting-rod type mechanical arm is simple in structure, the cost is low and the requirement for arrangement of a die and a punch press is low and capable of effectively improving the integral production efficiency of products and lowering production cost.

The invention relates to a tracking-type active radar calibrator based on a transmitted signal reestablishing system. The tracking-type active radar calibrator comprises a servo unit (1), a radio frequency receiver (2) and a radio frequency transmitter (5). The tracking-type active radar calibrator further comprises a tracking device (3), a signal reestablishing device (4) and a frequency synthesizer (6), the tracker (3) is respectively connected with the radio frequency receiver (2), the frequency synthesizer (6) and the signal reestablishing device (4), and the signal reestablishing device (4) is further connected with the frequency synthesizer (6) and the radio frequency emitter (5). The tracking-type active radar calibrator can quickly capture tracking radar signals and reestablish radio frequency signals so as to send the signals to an on-orbit satellite radar, and realize the functions that at any position within the coverage range of the satellite radar signals, the radar signals can be captured and tracked quickly, signal emission time can be accurately set according to received signal intervals, and the radio frequency signals are reestablished to be sent to the radar.

The invention discloses a whole vehicle thermal management system of a pure electric vehicle and a management method. A heat pump type air conditioner system, a battery pack thermal management systemand an electronic control cooling system are arranged on the pure electric vehicle. The system comprises a heat pump type air conditioner refrigerant liquid circulating loop, a coolant liquid circulating loop of the battery pack thermal management system and the electronic control cooling system, and an ECU control center. The two liquid circulating loops are coupled on a first evaporator and a second evaporator, two liquid inlet and outlet internal pipelines of the first evaporator and the second evaporator are independent, and liquid flow directions are designed in a convection mode. Heat among the three sub-systems can be utilized under the condition of guaranteeing driving and riding comfort, an external cold source and sub-system heat sources are fully utilized, and the energy consumption of the whole vehicle thermal management system is reduced.

The invention relates to a live-action navigation method, device and equipment, a storage medium and a vehicle-mounted multimedia system and relates to the field of vehicle-mounted navigation. The method comprises steps a video image frame acquired by a camera is obtained, wherein the video image frame is an image frame acquired by acquiring a picture in the advancing direction of a target vehicle; field angle adjustment of the video image frame is carried out to obtain a navigation image frame, and the navigation image frame is an image frame adaptive to a live-action navigation function; real-time navigation data is obtained; a live-action navigation video is displayed. The method is advantaged in that field angle adjustment of the video image frame which is acquired by a camera and is used for generating a driving record video stream to obtain a navigation image frame is carried out; the live-action navigation video is generated in combination with the real-time navigation data, thelive-action navigation video can be generated through the vehicle-mounted multimedia system and original equipment in the vehicle and interactively displayed with a user, and cost of the vehicle under the condition that the vehicle is provided with the vehicle-mounted navigation system is reduced.

The invention discloses extrusion type slit coating packaging equipment. The extrusion type slit coating packaging equipment comprises a coating system and a motion control system, wherein the coatingsystem is provided with a coating die head, and the bottom of the coating die head is provided with a discharge gap; the motion control system is used for enabling the coating system to have the translation freedom degree along the horizontal plane and the reciprocating linear freedom degree in the vertical direction, and a rotation degree of freedom around the plumb line; the motion control system comprises a first screw rod which is horizontally arranged and is perpendicular to each other, a second screw rod, a motion control system and a telescopic shaft, wherein the telescopic shaft is connected with the top of the coating die head, and the telescopic shaft is provided with a vertical telescopic degree of freedom and a degree of freedom of rotation around the axis direction of the telescopic shaft; and the axis of the telescopic shaft penetrates through the shape center of the coating die head or penetrates through the end point of the discharge gap. The coating die head has the translation degree of freedom in the space XYZ direction and the rotation degree of freedom along the axis Z, wide substrate products are more narrower and wider in application width, the applicabilityis higher, and the coating efficiency is improved.

The invention discloses a power-off maintaining three-degree-of-freedom piezoelectric directional adjustment device and platform control method, and relates to a piezoelectric driving adjustment device and method. The device comprises a platform, a base and three or four adjustment mechanisms, wherein each adjustment mechanism comprises an ejector rod, a driving mechanism, a braking mechanism and a supporting body; the upper end of the ejector rod is fixed to the platform, a universal flexible hinge is machined on the ejector rod and located between the upper portion of the supporting body and the platform, and the supporting body is fixed to the base. The method comprises the steps: 1, assembling the adjusting mechanism, the platform and the base; 2, relieving the self-locking state of the ejector rod; 3, enabling the adjustment device to control the platform to achieve three-degree-of-freedom adjustment. The device is compact in structure, is used in a space environment, is stable and reliable in operation, can realize three-degree-of-freedom adjustment of the platform, and can meet the application requirements of the space environment.

The invention discloses a novel automatic driving vehicle for field management. The vehicle comprises a vehicle frame, a front single cross arm suspension rack and a rear fork suspension rack are welded to the front and rear sides of the vehicle frame respectively, a front single cross arm includes a cross arm and a front shock absorber, the rear fork suspension rack includes a rear fork and a rear shock absorber, a rear axle is connected to the side, away from the vehicle frame, of the rear fork through bolts and includes a direct-current brushless motor and a direct-current brushless motor controller, driving wheels are mounted on both sides of the rear fork, and a rotating rod is fixedly connected between the two driving wheels; a driving end of the direct-current brushless motor and the outer wall of the middle of the rotating rod are both sleeved with a belt pulley, a belt is sleeved between the two belt pulleys, a pesticide spraying device is disposed on the top of the vehicle frame, and a battery pack is disposed in the vehicle frame. The automatic driving vehicle for field management has the advantages of being compact in structure, low in device cost, scientific and reasonable in design, good in seismic performance, low in layout requirements for a planting area and wider in applicability.

The invention provides a transportation vehicle safety control method and system with a power supply system. The power supply system is divided to a first-level power supply system and a second-level power supply system. While an accident which is going to happen is pre-judged by a first safety diagnose module, the power source of the second-level power supply system is cut off and a capacitor is discharged, and the emergency braking operation is triggered; after the accident happens, a second safety diagnose module is used for diagnosing the severity degree of the accident, and according to a diagnose result, selectively adopting the following operations: recovering the power supply of the second-level power supply system, controlling the output power of the first-level power supply system and triggering safety belt pre-tightening operation, or cutting off the first-level power supply system and discharging the capacitor and triggering a safety airbag. The dynamic property of the transportation vehicle can be kept during the slight impact and medium impact, and the transportation vehicle can leave the dangerous area as soon as possible; the whole power supply system can be effectively cut off during the serious impact so that the electric shock is avoided; and layout requirements for the second-level power supply system are reduced, and the freedom degree of the layout is increased.

The invention discloses a mobile terminal and a radio frequency architecture thereof, comprising a trans receiver, a main radio frequency switch, a diversity switch, a main antenna and a diversity antenna, wherein the trans receiver is connected with the main radio frequency switch through access of main radio frequency, the trans receiver is connected with the diversity switch through diversity access, signal of domination antenna with low frequency: band20 / band17 / band13 is debugged through diversity access,signal of diversity antenna with low frequency: band20 / band17 / band13 is debugged through access of main radio frequency; shift of antenna is realized through adjustment of domination and diversity access which does not need to add switch and does not increase loss. At the same time, the mobile terminal and its radio frequency architecture have low requirement for the layout of main board, and are suitable for rapid design.

The invention provides a power carrier communication-based equipment management and performance evaluation system. The system comprises an equipment state information acquisition module used for obtaining a unique code of equipment after a power-on self-test is passed and sending power carrier information carrying the unique code, a regional equipment management information collection and forwarding module used for receiving the power carrier information sent by the equipment state information acquisition module, converting the power carrier information to be in a specific format and forwarding the power carrier information, a data acquisition module used for receiving the power carrier information forwarded by the regional equipment management information collection and forwarding module and adding a timestamp for a working state according to the working state of unique number acquisition equipment of the equipment, a management information storage database used for storing the working state of the equipment and the corresponding timestamp, and a management information query and analysis module used for performing query, statistics, output and analysis on the acquired working state of the equipment. Therefore, low-cost monitoring, acquisition, transmission and storage of the working state of the equipment are realized.

The invention relates to a reciprocating type hydrodynamic force water drawing rotating machinery power converting machine. The piston rod of a driving cylinder is connected with a converting device by virtue of a gear rack mechanism; the two ends of the driving cylinder are respectively provided with two reversing valves which are inverse in on-off state, the reversing valve is connected with a reversing valve mechanism; the gear rack mechanism is also connected with a chain transmission mechanism, the lever transmission chain in the chain transmission mechanism is connected with one end of a lever transmission mechanism, the other end is connected with a water drawing machine chain transmission mechanism,the water drawing machine chain transmission mechanism is connected with the piston rod of a water drawing cylinder, and the two ends of the water drawing cylinder are respectively provided with two one-way valves which are inverse in direction. The equipment of the invention mainly utilizes potential energy of water, pressure difference produced by water level difference is utilized to push the piston of the driving cylinder, thus having low requirement on water flow, requiring no dam and having less environmental impact. The equipment is in full mechanical mode, has low arrangement requirement, is environmentally friendly and is applicable to being used at the position where water flow is within certain head drop.

The invention discloses an elevator detection device. The elevator detection device comprises a sensor group and a judging unit, wherein the sensor group at least comprises one sensor and is used fordetecting people and / or objects passing through an entrance and exit of an elevator car; the judging unit is used for judging whether people and / or objects pass through the entrance and exit of the elevator car or not according to detection signals output by the sensor group; the sensor group is mounted on a mounting seat at the upper part of the entrance and exit of the elevator car, the mountingseat is positioned on an elevator car body, and the sensor group is distributed along the width direction of a car door and is used for detecting people and / or objects passing through the entrance and exit of the elevator car from top to bottom; and a detection area of the sensor group comprises an area where an elevator car door is located, and the ratio alpha of the width of the detection areain the width direction of the car door to the width of the car door meets the condition that alpha is greater than or equal to 0.5 and less than or equal to 1. According to the elevator detection device, a vertical detection mode is adopted, so that the cost of the sensor and the complexity of installation and wiring are reduced, the width information of people and / or objects passing through the entrance and exit of the elevator car is directly and accurately detected, and the occupied area of the elevator car is obtained.

The invention relates to a sealing technology for filling of gas or liquid, in particular to a sealing device filled by various refrigerants and a sealing method thereof. The method adopts a filler pipe, a nozzle of which is provided with internal threads, and sealing is realized by pressing the filler pipe after filling to be a flat shape and utilizing a bolt to block off the nozzle of the filler pipe. The device and the method provided by the invention do not need utilization of the flames for melting and sealing a filler nozzle, avoid that the leaked freon refrigerant is reduced into noxious gases by high-temperature flames or flammable refrigerants are ignited, and has simple, convenient, secure and reliable operation process and low requirements for the arrangement of the filler pipes.

The invention discloses an emergency unlocking parking lock device. The emergency unlocking parking lock device comprises a shell, a transmission part, a control module, a reversing valve, a hydrauliccontrol valve, an emergency valve, a hydraulic control closed type one-way valve with a first elastic part, an emergency oil conveying mechanism, an energy accumulator and a detection part. The shellcomprises a sealed cavity. The transmission part is movably arranged in the shell in a penetrating mode. The control module comprises a self-locking mechanism, and the self-locking mechanism can automatically lock the transmission part. The self-locking mechanism can release the transmission part under the control of the control module or the pressure of hydraulic oil in an emergency cavity. After the self-locking mechanism releases the transmission part, the hydraulic control closed type one-way valve with the first elastic part can unblock an oil way between the emergency valve and the hydraulic valve in a one-way mode. The emergency oil conveying mechanism can manually convey the hydraulic oil in an oil tank into a first connector and a second pilot oil way. By means of the emergency unlocking parking lock device, gear shifting of a vehicle in an emergency state can be well achieved.

The invention provides a differential receiving system of a cellular receiver and a method for realizing signal reception. The method comprises the following steps: filtering and converting received signals to differential signals; and carrying out amplification and phase processing on the differential signals, carrying out phase compensation on a route of the differential signals, synthesizing processed differential signals and carrying out demodulation process. The invention controls the phase of differential lines, thereby improving the affect of phase error to receiving sensitivity of thedifferential receiving system, enhancing the receiving sensitivity of the differential receiving system and greatly reducing layout requirements to the differential lines.

The invention relates to a reactor residual heat removal system and method based on a DC (direct-current) vapor generator. The reactor residual heat removal method based on the DC vapor generator comprises a downlink process step A and / or an uplink process step B, wherein the downlink process step comprises procedures as follows: when average temperature of a primary loop coolant is first temperature, the primary loop coolant passes through the primary side of the DC vapor generator and passes through the secondary side of the DC vapor generator for vapor-liquid heat exchange to conduct out heat, and the temperature is reduced from the first temperature to second temperature; when the average temperature of the primary loop coolant is the second temperature, the primary loop coolant passesthrough the primary side of the DC vapor generator and passes through the secondary side of the DC vapor generator for liquid-liquid heat exchange to conduct out heat, and the temperature is reducedfrom the second temperature to third temperature. According to the method, the vapor-liquid heat exchange and the liquid-liquid heat exchange are realized by the DC vapor generator, so that the primary loop heat is not required to be conducted out by the residual heat removal system, and the system and the method have the advantages of being simple and convenient to operate and high in safety performance.

The invention discloses a steam turbine lubricating oil high-level oil tank system. The steam turbine lubricating oil high-level oil tank system comprises a main oil tank, an oil pump, an oil supply pipeline, a bearing box and an oil return pipeline which sequentially communicate with each other according to a lubricating oil circulation sequence, the oil supply pipeline communicates with an oil cooler and communicates with an oil charging pipeline, the oil charging pipeline communicates with a high-level oil tank, and a high-level oil supply pipeline communicates between the high-level oil tank and the bearing box. The steam turbine lubricating oil high-level oil tank system has the beneficial effects that an existing system does not depend on an electrical system, can automatically and stably control the oil supply pressure, only has the requirement for the lowest arrangement height of the oil tank, has no requirement for the structural form, can maintain the oil temperature and the oil level of the high-level oil tank, and has an online testing function. According to the steam turbine lubricating oil high-level oil tank system, the volume of the high-level oil tank can be effectively reduced, the arrangement requirement of the high-level oil tank is lowered, regular tests can be carried out, the safety of a unit lubricating oil system is enhanced, and oil cut-off and bush burning accidents are avoided.

The invention discloses a method for determining oxygen concentration of exhaust gas of an engine. The method comprises the steps that firstly, the inflation efficiency of the engine, the rotating speed of the engine and the exhaust amount of the engine are utilized for calculating the total gas inlet mass flow of the engine, and then, the temperature of air entering the engine, temperature of the waste gas entering the engine, temperature of mixed gas entering the engine and the total air inlet mass flow of the engine are utilized for calculating the mass flow of air entering the engine and the mass flow of the waste gas entering the engine; on the basis of data, the oxygen concentration of the waste gas of the engine can be determined. According to the method for determining the oxygen concentration of the waste gas of the engine, after the engine is started, the oxygen concentration of the waste gas in the engine can be rapidly determined, sensibility of a pipeline structure is reduced, so that the requirement of pipeline layout of the engine can be reduced. The invention further discloses a system for determining the oxygen concentration of the exhaust gas of the engine.

The invention discloses a novel throttle valve which comprises a motor 1, an upper bottom plate 2, vanes 3, a driving ring 4 and a lower bottom plate 5, wherein the motor 1 is fixed on the upper bottom plate 2, the driving ring 4 is arranged in a ring slot of the lower bottom plate 5, the vanes 3 are arranged in a long slot of the driving ring 4 and circular holes of the upper bottom plate 2 and the lower bottom plate 5 via concave platforms thereon, the upper bottom plate 2 and the lower bottom plate 5 are mounted via bolts, and the whole device is an integrated body. The novel throttle valve has the benefits that the length and the volume of the throttle valve are greatly reduced, and the layout requirement for an air intake system is relatively low; and the diameter of an air intake passage is directly controlled by adopting a multi-vane rotating structure, and stop sheets for obstructing airflow are not arranged in the air intake passage, so that airflow disturbance cannot be caused, airflow is stabilized, air intake pressure is increased, and the output power and the fuel utilization rate of an engine are improved.

The invention belongs to the technical field of water cooling, and relates to an expansion water tank for an armored vehicle cooling system. The water tank is divided into two chambers, the steam chamber and the cooling liquid chamber, by a sealed partition. The two chambers are independent and sealed, and communicate with each other through a connecting pipe. The volume of the steam chamber is 1% of the total volume of the entire expansion tank. / 3; The steam air valve is installed on the top of the steam chamber, the coolant filling screw plug is installed on the top of the cooling chamber, two reinforcement plates are respectively installed on the coolant chamber and the steam chamber, the drain plug is installed on the bottom of the steam chamber, and the coolant filling plug is installed on the top of the cooling chamber. The connection pipe is located at the bottom of the coolant chamber, and the steam connection pipe is located on the upper part of the side plate of the coolant chamber. The invention has the advantages of reducing the requirements on the layout of the entire vehicle under the premise of satisfying the normal operation of the expansion tank, and providing a technical basis and guarantee for the military armored vehicle to realize high power density.

The invention provides a gear shift assembly and an automobile. The gear shift assembly comprises a gear shift center control table and an arch handle which are arranged between a driver's seat and afront passenger seat in an automobile body of the automobile. The gear shift center control table is connected with the automobile body. The arch handle comprises a first connection rod, a handle anda second connection rod. The extension direction of the handle is parallel to the width direction of the automobile body, the first connection rod is connected with the first end, facing the driver'sseat, of the handle and the first side of the gear shift center control table separately, and the second connection rod is connected with the second end, facing the front passenger seat, of the handleand the second side of the gear shift center control table separately. A rotation gear shift part coaxially rotating around the handle is arranged around the handle, the surface of the periphery of the handle is provided with multiple gear contacts for different gears, the inner periphery of the rotation gear shift part is provided with a selection contact in contact with one gear contact, and when the rotation gear shift part rotates around the handle, the automobile is arranged to have different gears. According to the gear shift assembly, the arch handle integrates the functions of an auxiliary pull handle and a gear shift handle in the automobile and places the function of a pull handle, and the overall cost of the automobile is lowered.

The invention relates to the technical field of stage follow spotlights, in particular to a computer follow spotlight control system which comprises a follow spotlight arranged on a stage, an IPC network camera arranged on the follow spotlight, a control host, a video touch display, a follow spotlight control device and a power supply device. The IPC network camera acquires real-time image data and transmits the real-time image data to the control host. The control host is in communication connection with the follow spotlight, the IPC network camera, the video touch display and the follow spotlight control device to control the whole system; the video touch display is used for a ground operator to remotely observe the real-time condition of the on-site stage from the visual angle of the follow spotlight; and the follow spotlight control device is used for remotely controlling and adjusting the follow spotlight. High-altitude operation is avoided, and safety is improved; on-site light management is more efficient, and accident and emergency situations can be handled more timely; work of operators is simplified, errors are avoided, lamplight adjustment is faster, and a better stage lamplight effect is achieved.

The invention relates to a wireless meter checking system based on mesh network, which belongs to the technical field of the wireless data transmission. The system comprises a palm copying device and a terminal device, wherein the terminal device mainly comprises a user meter with a 485 bus interface, an Xbee receiving and sending module and a singlechip, the user meter is connected with the singlechip by a RS485 bus, the singlechip is connected with the Xbee receiving and sending module by a serial port, the palm copying device comprises the Xbee receiving and sending module and the singlechip, the singlechip is connected with the Xbee receiving and sending module by the serial port, the palm copying device is connected with the terminal device in a wireless mode, the terminal device collects and transmits data of the user meter, the palm copying device controls the terminal device to collect the data and receives the data collected by the terminal device to collect the data.

The invention discloses a floating type suspension tunnel with the electric propellers. The floating type suspension tunnel with the electric propellers comprises the multiple electric propellers anda GPS underwater stereoscopic positioning system, and a suspension tunnel body is formed by splicing multiple sections of tunnel pipe joints; the multiple electric propellers are installed on the topface of the suspension tunnel body at intervals, and propellers of the adjacent electric propellers are oppositely arranged towards one side of the suspension tunnel body; the GPS underwater stereoscopic positioning system comprises a data control center, a GPS navigation satellite, a GPS navigation system base station, a power buoy arranged on the water surface close to the upper portion of the middle of the suspension tunnel body, a signal receiver installed on the power buoy and a plurality of underwater transmitters arranged in the middle of the multiple sections of tunnel pipe joints; thedata control center receives the position offset transmitted by the signal receiver, calculates the corresponding thrust required by each tunnel pipe joint, and controls the multiple electric propellers to operate correspondingly. According to the floating type suspension tunnel with the electric propellers, and the suspension tunnel can be stably kept at a set position all the time.

The invention relates to the water treatment industry, particularly to deep filtration and purification of drinking water, and discloses a fore-laying waterway switching device and a water purifier with the fore-laying waterway switching device. The fore-laying waterway switching device comprises a rotating disc and a fixing disc, wherein the rotating disc and the fixing disc correspond to a fore-laying filtering channel, are in contact fit to form a sealed switching interface, and are arranged in the sealed cavity, the fore-laying waterway switching device further comprises a reverse osmosisfiltering channel, the reverse osmosis filtering channel is connected between the rear end of the fore-laying filtering channel and a water outlet pipeline of a machine seat, a plurality of water ports corresponding to the outer water port, the transition water port and the central water port of the rotating disc are formed in the fixing disc, the number of the water ports in the same circle equant switching position of the fixing disc is smaller than the number of the equant switching positions, the front water port of the fixing disc and the rear water port, closed by the rotating disc, of the fixing disc are respectively connected with the head ends and the tail ends of 1-5 fore-laying filtering liners connected in series, one of the outer water port and the transition water port of therotating disc corresponds to the front water port of the fixing disc, and the other water port is closed by the fixing disc closing and is connected with a back-flushing subsequent pipeline.

The invention provides a direct-insert power device, a semiconductor module, a hub motor driver or an automobile driver and a new energy automobile. The direct-insert power device comprises: a body comprising a power chip and a wrapping layer wrapping the outer surface of the power chip; a plurality of pins comprising power pins, secondary control pins and control signal pins, each pin comprisinga first section arranged in the wrapping layer and a second section arranged at the outer portion of the wrapping layer, the second section of each secondary control pin and the second section of eachcontrol signal pin are located in a first plane, the second section of each power pin and the first side of the body are located in a second plane, and the first plane is not parallel to the second plane. The direct-insert power device can greatly reduce the mutual crosstalk of a power large current and a control signal, can improve the connection part layout of the main power end, can reduce theparasitic inductance, can greatly increase the system power density, can reduce the system shock and can optimize the parallel consistency.