54results about How to "Real-time monitoring distance" patented technology

The invention provides an intelligent safety power distribution cabinet which comprises protective covers, servo motors, a first sealing strip and the like and is characterized in that each protective cover is of a shape of one quarter of a spherical shell; two protective covers are symmetrically mounted on output shafts of the servo motors by rotating shafts; two servo motors are provided and are symmetrically mounted at the upper part of a cabinet body housing; and the first sealing strip is mounted at the edge of the protective cover at the left side. According to the intelligent safety power distribution cabinet provided by the invention, by adopting a mode of combining the spherical shell type protective covers with a spray pipe, in the case of a fire outside, two protective covers can be rapidly closed and an electromagnetic water valve is opened to enable high-pressure water to be sprayed out of water spray holes so as to directly cool the protective covers and prevent heat from being transferred into the power distribution cabinet.

The invention discloses a smart robot for clearing off dirt on the water surface. The smart robot comprises a ship, floats, a garbage-collecting device system, a garbage storage bin, a power system, apower supply system and a main control system. The garbage-collecting device system comprises a garbage-collecting device and a flexible mechanism; the floats are clamped on two float fastening devices respectively, a turning plate is arranged on the rear side or the inner side of the garbage-collecting device, the garbage storage bin is arranged in the middle of the ship, the power system is arranged behind the garbage storage bin and comprises a motor, a drive mechanism and a water-spraying thruster inside the ship, and a steering device is arranged above the power system; the power supplysystem comprises a storage battery and a charging and discharging protection device; the main control system comprises a Bluetooth control system, a dirt recognition device, a visual image recognitionsystem and a GPS navigation system. The smart robot can automatically clear off the dirt on kinds of water surfaces instead of manual operation, improve the dirt-removing efficiency, lower the laborcost, and enhance safety.

The invention provides a queue jumping early warning system and method. The queue jumping early warning system comprises a detection part arranged on an own vehicle and used for measuring the relativedistances between other vehicles around the own vehicle and the own vehicle, and a computing control part used for conducting queue jumping computing control of the following vehicles on the basis ofdetected data of the detection part. Other vehicles and the road environment change can be detected and analyzed in real time through the detection part, the traveling tracks of other vehicles are predicted, a queue jumping vehicle intending to overtake and change the lane into the lane of the own vehicle from the rear side is judged, and an early warning and a prompt are given to a driver of theown vehicle in a proper mode. The driver can be warned about the danger in advance, prejudgment time is prolonged, and risks of emergency braking and accidents are reduced.

The invention discloses an anti-collision system and method of bulk cargo storage yard stand-alone equipment. The system comprises the stand-along equipment. The stand-alone equipment comprises a walking mechanism, a cantilever support, a cantilever, a GPS differential positioning substation, a taking machine, a positioning support, a gyro sensor, a walking information identification device and a control terminal, wherein the walking mechanism is arranged at the bottom of the stand-alone equipment, the cantilever support is arranged on the walking mechanism, one end of the cantilever is pivoted to the cantilever support, the GPS differential positioning substation is arranged between two stand-alone devices on the ground, the positioning support comprises a fixed part and a moving part, the fixed part is fixedly arranged in a taking machine pivotal axis through hole, the middle of the moving part is slidably connected with the fixed part, the gyro sensor is arranged at the other end of the moving part, the walking information identification device is arranged on the walking mechanism, and the control terminal is arranged on the ground. The anti-collision system is long in service life, does not need to be frequently maintained and can be widely popularized, manpower is greatly saved, and labor intensity is greatly reduced.

The invention relates to a live wire monitoring and early warning system and method based on multiple laser radars, and the system comprises a plurality of laser radars disposed on different surfaces of a bucket arm vehicle, and the plurality of laser radars are respectively connected with a plurality of data processing platforms. The plurality of laser radars are not intervisible, and each laser radar senses information in one direction; the data processing platform collects laser radar information, carries out multi-laser radar point cloud fusion according to the calibrated spatial position relation, and reduces the collected point cloud to a coordinate system with the center point of the bucket arm vehicle as the original point; the multiple laser radars calculate conversion parameters through external parameter calibration, and space synchronization of the multiple laser radars is achieved. According to the invention, in the live working environment of the 10 kv power transmission line, the live working safety distance of a worker can be measured and early warned, the safety condition of the working environment can be monitored, and the working environment can be visually monitored, so that the real-time management and control of a working site and the safety protection of the worker can be realized, and the safety level of live working can be improved.

The invention discloses an automotive emergency braking system which comprises a sudden stop button, a sensor group, a signal processor, a controller, executing mechanisms, a distance sensor, a speed sensor and an alarm apparatus. The executing mechanisms comprise power source cutting-off devices for cutting off power sources and brake supercharging devices for providing maximum brake force, wherein each power source cutting-off device comprises a main power source cutting-off switch, a branch power source cutting-off switch and a residual current sensor, the distance sensor and the speed sensor are connected with the input end of the controller, the alarm apparatus is connected with the output end of the controller, and the sudden stop button is connected with the input end of the sensor group. After the automotive emergency braking system is adopted and a driver needs to emergently brake and park a vehicle, the system can rapidly cut off a power source of the vehicle and meanwhile utilizes the maximum brake force allowable by a performance parameter of the vehicle to brake only by pressing down the sudden stop button, and the phenomenon that the vehicle cannot be timely stopped due to insufficient brake force during emergency baking.

The invention belongs to the technical field of bridge expansion joint alarm and especially relates to bridge expansion joint alarm equipment for road engineering. The equipment comprises a bridge base surface. An outer side of the bridge base surface is fixedly connected with a fixing device; a bottom end of the fixing device is fixedly connected with a detection alarm device; a positioning plateis attached to a left side surface of a right bridge base surface; a communicating plate is simultaneously connected with two induction blocks in the same group; a distance between two bridge base surfaces can be monitored in real time; device bridge expansion joint monitoring and alarming are realized; and the bridge expansion joint is prevented from being too large to cause accidental dangers,the bridge expansion joint is prevented from being too small to enter a dangerous state, if the bridge expansion joint is too small, cooling operation or maintenance needs to be performed, the two bridge base surfaces are prevented from being abraded, the stability between the two bridge base surfaces is prevented from being affected, and using safety of the device is improved.

The invention discloses a TBM anchor drilling rig real-time online monitoring system based on a hydraulic system and a monitoring method. The TBM anchor drilling rig real-time online monitoring systemcomprises a signal acquisition module, wireless communication modules and a TBM upper computer; and the signal acquisition module comprises a pressure sensor I, a pressure sensor II and a flow sensor, wherein the pressure sensor I detects the oil pressure of a hydraulic pipe of a propulsion cylinder, the flow sensor detects the oil flow rate of the hydraulic pipe of the propulsion cylinder, the pressure sensor II detects the oil pressure in a hydraulic pipe of an impact cylinder, and the oil pressure and oil flow rate of the hydraulic pipe of the propulsion cylinder and the oil pressure in the hydraulic pipe of the impact cylinder are processed by signal processing modules and uploaded to the TBM upper computer through the wireless communication modules. The TBM anchor drilling rig real-time online monitoring system monitors the propulsion speeds and distance of the propulsion cylinder as well as the drilling speeds and pressure of a TBM anchor drilling rig in real time, real-time monitoring of a plurality of indicators can reduce the errors, and data communication with the TBM upper computer ensures the working state of the anchor drilling rig and surrounding rock related information in the TBM excavation process, and the problem that monitoring data in the prior art is unreliable is solved.

The invention relates to a monitoring device for the cross and span distance of an overhead power transmission line, in particular to a monitoring device for the cross and span distance of an overhead power transmission line based on the single chip microcomputer control, and solves the problems that a conventional overhead power transmission line cross and span distance monitoring technology is low in efficiency, poor in environment adaptability, poor in real-time property, poor in view and the like. The device comprises a laser distance measuring device and a central control device, wherein the laser distance measuring device comprises a spherical shell; the spherical shell comprises a microprocessor chip, a laser distance measuring sensor and a radio frequency transmitting module; the central control device comprises a shell and an internal control circuit; the internal control circuit comprises a microprocessor, a temperature sensor, a radio frequency receiving module and a wireless transmission module; the temperature sensor is led outside the shell through a conducting wire and is positioned inside a circular spherical shell which can sleeve an overhead power transmission line. According to the invention, the real-time measurement on the cross and span distance of overhead power transmission lines, communication lines, roads, railways, rivers, houses and the like can be implemented.

The invention relates to an obstacle detection method and an inspection robot vehicle-mounted obstacle avoidance system and method. An inspection robot is provided with a detection radar system and an image acquisition system. The detection radar system comprises a plurality of detection radars for synchronously detecting obstacle information, and the detection radars are synchronously started to detect the obstacle information; and when any detection radar detects obstacle information or the inspection robot runs to a curve road section, the image acquisition system is synchronously started to acquire obstacle pictures according to the obstacle information detected by the detection radar system, and effective target obstacle information is approved and recognized. According to the invention, the detection radar system and the image acquisition system are combined to realize judgment and detection of obstacles together, so that the detection precision of the obstacles is improved, and the intelligent obstacle avoidance requirement of the subway tunnel inspection robot is met.

The invention provides a traffic safety intelligent display system, comprising a detection module, an analysis control module and a display module, wherein the display module comprises a vehicle-mounted display which is arranged in a visual range in front of a driver and an early warning display which is arranged at the tail of a vehicle; a display area of the vehicle-mounted display comprises a vehicle space display frame used for displaying information around the vehicle, a relative speed display frame and an overtaking display frame used for displaying overtaking information; and the overtaking display frame is connected with an overtaking mode starting button in a control manner. By adopting the traffic safety intelligent display system disclosed by the invention, vehicle space information and the overtaking information can be visually known, and a vehicle behind is timely reminded to keep the vehicle space. The invention also provides an autonomous parameter setting method of the system, operation is easy, and practicability is good.

The invention discloses a full-automatic regulation device for a mine hoist brake shoe interval. The full-automatic regulation device for the mine hoist brake shoe interval comprises a brake body, a large gear ring, a worm, a micro reducer, a micro transmission motor and a displacement sensor; the large gear ring is in threaded connection to the inside diameter of one end of the brake body and isengaged with the worm arranged at the outer part of the brake body; the micro reducer is connected to the tail part of the worm and is fixedly installed on the surface of the brake body; the micro transmission motor is connected to the micro reducer; the outer part of the brake body is provided with the displacement sensor; and the brake body is provided with a brake component. The full-automaticregulation device provided by the invention is simple in design structure as well as convenient and rapid to operate, can perform monitoring on the wear quantity of a brake shoe, replaces the traditional manual regulation manner to perform regulation on the wear quantity of the brake shoe when the brake shoe is worn, improves the accuracy and increases the speed in the brake shoe regulation process, lowers the physical power consumption of a worker and reduces occurrence of safety hidden dangers.

The invention discloses a three-dimensional cutting device based on a broadband laser frequency domain. Laser beams emitted by a low-coherence broadband light source pass through a first semi-reflective semi-permeable mirror and are split into a vertically-upward first laser beam and a horizontal second laser beam; a first reflective mirror is arranged above the first semi-reflective semi-permeable mirror and is perpendicular to the first laser beam; a second semi-reflective semi-permeable mirror is arranged on a light path of the second laser beam for splitting the second laser beam into a focus tracking laser beam and a longitudinal distance monitoring laser beam; a one-way photoscope is arranged on a light path of the focus tracking laser beam for reflecting the focus tracking laser beam to the top face of a workpiece; and the longitudinal distance monitoring laser beam is reflected by a second reflective mirror and the one-way photoscope sequentially to irradiate the top face of the workpiece. The invention further discloses a method using the three-dimensional cutting device based on the broadband laser frequency domain. Compared with the prior art, the three-dimensional cutting device based on the broadband laser frequency domain has the advantages that the structure is simple, control is precise and reliable, and safety and rapidness are achieved, precise reliability ofreal-time tracking of the focus position of a laser cutting machine can be improved.

The invention relates to the field of sugarcane harvesting machinery, and particularly discloses a whole-rod type sugarcane harvester. The whole-rod type sugarcane harvester comprises a base plate, a frame, a sugarcane harvesting assembly with a cutter head assembly, a cutter head height identification camera, a sugarcane supporting mechanism with a chain assembly and a scraper blade, a first adjusting device, a second adjusting device, a sugarcane storage box and a sugarcane bundling device. According to a straightening mechanism, the chain assembly drives the scraper blade to move to straighten sugarcanes, the structure of a traditional straightening mechanism is simplified, and the problem that sugarcane leaves are prone to being wound is effectively solved; the distance between the edge of a cutter head and the ground can be monitored in real time through the cutter head height identification camera, so that synchronous feedback is carried out on the first adjusting device and the second adjusting device, the height of the cutter head assembly can be adjusted in real time according to the terrain, and the loss of the sugarcanes is reduced; and the harvested sugarcanes are bundled on site through the sugarcane storage box and the sugarcane bundling device, and the sugarcane harvesting efficiency is improved.

The invention provides an automobile collision prevention system, and belongs to the technical field of automobile security. The invention aims to solve the problem that the existing automobiles cannot take actions in time to avoid direct collision in the event of collision, and the center of gravity of a vehicle body cannot be adjusted in time when a vehicle is about to roll over, so that serioustraffic accidents are caused. The automobile collision prevention system comprises a main frame body, a battery, a distance measuring device, an electromagnetic collision prevention device and a rollover prevention device, wherein the distance measuring device, the electromagnetic collision prevention device and the rollover prevention device are arranged on the main frame body. The automobile collision prevention system monitors the distance between the vehicles in real time through the distance measuring device, the electromagnetic collision prevention device and the rollover prevention device arranged on the main frame body. When the vehicle is about to collide, the electromagnetic collision prevention device adds magnetism to the vehicle body, and the magnetic poles of two vehicles repel each other so as to reduce the impact force of the collision. When the vehicle body rolls over, the rollover prevention device takes action to adjust the center of gravity of the automobile, so that the automobile can reach a balanced state again.

The invention relates to the technical field of notebook packaging machines, and discloses a cover indentation cutter grooved wheel position adjusting mechanism of a notebook packaging machine. The mechanism comprises a main body rod, wherein the main body rod is of a hollow cylindrical structure, the outer side wall of the main body rod is sequentially sleeved with a first indentation wheel and a second indentation wheel from left to right, the first indentation wheel and the second indentation wheel are distributed in a bilateral symmetry mode, and a laser range finder is fixedly embedded in the side, opposite to the second indentation wheel, of the first indentation wheel; an external power source can be conducted to a conductive block through an electric brush, the conductive block can supply power to a servo motor and the laser range finder, meanwhile, electric power on the conductive block can be conducted to an electromagnet through a conductive piece, the electromagnet is magnetized, then the electromagnet at one end is attracted to a transmission shaft rotating through power, and the electromagnet at the other end is fixed on metal, so that the installation is more convenient and faster, and when a fault occurs, the electromagnet is directly powered off and disassembled, and the disassembly and the installation are more convenient and faster.

The invention discloses an intelligent equipment operation method based on big data, which comprises an intelligent equipment operation system integrally adopted by the method, the intelligent equipment operation system comprises a sensing identification module, a logic calculation module and a processing main control module, the sensing identification module is used for sensing and identifying passengers or articles in a specific area, and the logic calculation module is used for processing the passengers or articles in the specific area; the logic calculation module is used for judging and calculating the opening and closing angle and the opening and closing speed of a gate fan door according to sensed and recognized data information, the sensing and recognizing module is electrically connected with the logic calculation module, the logic calculation module is electrically connected with the processing main control module, and the processing main control module is electrically connected with the processing main control module according to measured body type data of different passengers. The opening and closing angle of the gate fan door is controlled, then the distance between the passengers in line and the different distances between the passengers and the fan door are measured in real time, the change speed of the gate fan door in unit time is calculated, and the method has the advantages that the passing speed of the gate fan door is high, and time is saved.

The invention discloses an intelligent anti-theft suitcase which comprises a case body and an anti-theft unit, wherein the case body comprises a telescopic case cover, the telescopic case cover comprises a fixed section and a telescopic section, and the telescopic section can stretch out and contract back to open and close the case body; the fixed section is a fixed plate, the telescopic section comprises a plurality of telescopic plates, the fixed plate and the telescopic plates are all provided with arch portions, and the height of the peak of the arch portion of the fixed plate is higher than those of the peaks of the telescopic plates; the anti-theft unit comprises a wireless communication module, a location module, an anti-theft module, an alarm module and a control module; the wireless communication module is used for providing wireless communication link, the location module comprises a GPS (Global Position System) locator which is used for locating the real-time position of the case body, the anti-theft module is used for collecting distance signals and vibration signals of the case body, the alarm module comprises an audible and visual alarm which is used for giving out alarm prompt, and the control module is used for receiving and sending signals for the location module, the anti-theft module, the wireless communication module and the alarm module.

The invention discloses an RV reducer delivery quality comprehensive performance quantitative detection experiment table and a detection method thereof. The RV reducer delivery quality comprehensive performance quantitative detection experiment table comprises an eccentric sleeve arranged on a first sensor shaft, the eccentric sleeve is sleeved with a sensor outer cylinder, and the eccentric sleeve rotates along with the first sensor shaft and a second sensor shaft; displacement signals between the laser displacement sensor and the eccentric sleeve are obtained in real time through the high-precision laser displacement sensor, a characteristic signal curve is obtained through a data acquisition card and a LabVIEW design data acquisition system, and the transmission ratio of an input shaft to an output shaft of the RV reducer is calculated after frequency spectrum transformation. The transmission error of the RV speed reducer can be obtained by comparing the theoretical transmission ratio with the actual transmission ratio, non-contact measurement is achieved through combination of the high-precision laser displacement sensor and the eccentric sleeve, and characteristic signals of the RV speed reducer can be accurately captured and identified.

The invention relates to the technical field of constructional engineering tools, and discloses a leveling instrument for a construction formwork based on an intelligent computer. The leveling instrument comprises a panel, wherein the panel is of a hollow cuboid structure, a plurality of infrared distance measuring sensors are fixed to the front surface of the panel, through grooves are formed in the two sides of the panel, and two box bodies are arranged on the two sides of the panel. A supporting cylinder on the rear surface of a connecting plate is pulled out, then equipment for pulling out the supporting cylinder is placed on the horizontally-placed construction formwork, at the moment, if a tilt angle sensor on a main control board detects that the formwork in a horizontal mode is not horizontal, a signal can be fed back to a microprocessor, the microprocessor lights up a first indicator lamp to remind a constructor to level the formwork, after the construction formwork is leveled, when the tilt angle sensor does not detect that the formwork has a tilt angle, the microprocessor lights up a second indicator lamp, and the constructor can operate and use the leveling instrument more conveniently.

The invention relates to the technical field of data measurement and display, in particular to a seabed ranging device and a detection method thereof. The seabed distance measuring device includes a detection pile, a tubular plastic shell, a first conductive strip and a first conductive sheet group are vertically provided on the upper and opposite sides of the inner wall of the shell, and a hollow hole is slidingly provided in the shell. The detection rod, the lower end of the detection rod is slidably sleeved on the outer wall of the detection pile, and the upper end is provided with a first metal sheet and a second metal sheet connected by a wire, and the first metal sheet is connected to the first metal sheet. The conductive strips are in sliding contact, and the second metal sheet is in sliding contact with the first conductive sheet group. The invention has high detection accuracy, low production cost and good seawater corrosion resistance, can dynamically and real-time monitor the distance between the sea surface and the seabed and the water outlet height of the deck of the offshore oil platform, and ensures the use and construction safety of the offshore oil platform.

The invention discloses a device with dangerous driving behavior reminding and emergency help seeking functions. The device comprises a camera, a loudspeaker, buttons, a GPS positioner, an ultrasonic sensor, an LED screen, a connecting line, two cartons and a Raspberry Pi development board, wherein the loudspeaker and the ultrasonic sensor are placed right above a carton, the camera is placed right in front of the carton, and the Raspberry Pi development board is placed in the carton and is used for connecting all parts of the whole device; the buttons are divided into a cancel button and an alarm button according to functions and are connected to the left side of the carton through the Raspberry Pi development board, the right sides of the buttons are connected with the LED screen to control flickering of the LED screen, and the GPS positioner is placed at the left side of the carton and is connected to the Raspberry Pi development board through the connecting line. The device combines the dangerous driving early warning and help seeking functions, and the functions are richer.

The invention discloses a mechanical arm end effector. The mechanical arm end effector comprises: a detection circuit; at least two clamping jaws; and at least two electrodes, arranged on the inner sides of the at least two clamping jaws and electrically connected with the detection circuit respectively, wherein the electrodes and a close conductor can form capacitors, electric signals used for representing the capacitors or the variable quantities of the capacitors are transmitted to the detection circuit, and the detection circuit is used for converting the electric signals representing the capacitors or the variable quantities of the capacitors into electric signals representing capacitance values or the variable quantities of the capacitance values. According to the mechanical arm end effector, the distance between each clamping jaw and the conductor to be grabbed can be monitored in real time through the at least two electrodes on the inner sides of the at least two clamping jaws, and synchronous or asynchronous movement of the at least two clamping jaws is controlled according to the distance between each clamping jaw and the conductor to be grabbed, so that the distance between each clamping jaw and the conductor to be grabbed is kept consistent all the time, and it is guaranteed that the at least two clamping jaws clamp the conductor to be grabbed at the same time.

The present invention provides a cleaning control method of a sweeping robot, a device thereof, and a sweeping robot. The method includes: acquiring the detection data of the obstacle detector on the sweeping robot; identifying the distance between the sweeping robot and the obstacle to reach a first distance according to the detection data; wherein, the first distance is that the change trend of the detection data conforms to the set value. Determine the distance between the sweeping robot and the obstacle at the time of the change trend; control the sweeping robot to rotate in place, so that the sweeping robot's driving direction is parallel to the contour of the obstacle or the tangent of the contour; control the sweeping robot to follow the running direction Drive, and control the distance between the sweeping robot and the obstacle to maintain the set distance range during the driving process. In the embodiment of the present invention, the probability of collision between the sweeping robot and obstacles in the working process is reduced, the efficient and autonomous edge cleaning function of the sweeping robot is realized, and the sweeping control method of the sweeping robot is optimized.

The invention relates to a station-adjustable clamp device for T-shaped joint workpiece embossment and belongs to the field of clamp design. A vertical plate is connected with the lower end of a clamp body. Centring plate grooves are milled in the two sides of the upper end of the clamp body. A baffle groove is milled in the middle of the upper end of the clamp body. A circular ring sleeve is arranged at the front end of the clamp body. A spring set is located in each centring plate groove. One end of each spring seat is connected with the outer side of the corresponding centring plate groove. The other end of each spring set is connected with the outer side of the corresponding centring plate, and each centring plate is pressed on the inner side of the corresponding centring plate groove; a positioning block slides in the baffle groove, a fastening screw is fixed to the positioning block and used for fixing the positioning block to the clamp body, the positioning block is fixedly provided with an upper press plate and a lower press plate, and an adjusting screw is arranged on the positioning block and used for adjusting the downward-press depth of the lower press plate. By the adoption of the station-adjustable clamp device for the T-shaped joint workpiece embossment, the embossment point position can be positioned precisely, and the distance can be monitored in real time; the centring reliability is guaranteed effectively; and the state of the separation from the manual holding in the embossment can be achieved.

The invention discloses a working platform load overrun protection device of a bridge inspection vehicle. The device comprises an elevating tower, a working platform and a protective frame, an installation seat is fixed at the bottom of the elevating tower, the working platform is movably installed on one side of the installation seat through a rotary shaft, the protective frame is fixedly supported on the edge positions of two sides of the top of the working platform through a supporting frame, a sliding groove is formed in the protective frame, a supporting plate is fixed on the end, away from the installation seat, of the top of the working platform, a driving motor is installed on the top of the outer side of the supporting plate through a bolt, the output end of the driving motor penetrates through the supporting plate and is fixedly connected with a lead screw, a driving block is movably installed on the lead screw, and a sliding block matching with the sliding groove is arrangedat the bottom of the driving block. By means of the device, a load bearing point of the working platform is monitored in real time, loads borne by the working platform are accurately monitored to strictly prevent the load overrun of the working platform from occurring and put an end to the occurrences of the phenomenons of the fracturing of the platform and the like, and therefore the safety of aworker and equipment is guaranteed.

The invention relates to a wind turbine generator blade online monitoring system and a work method thereof, and belongs to the field of wind power generation. The system comprises a laser sensor holder, laser sensors, a data acquisition device, a sensor power supply output interface, a tower footing optical fiber reserved interface, an optical fiber and a data storage and analysis device; the laser sensors are arranged on the outer wall of a tower in a surrounding manner through the laser sensor holder, the height between the laser sensors and the ground is larger than the heights between theblade tip positions and the ground when blades are vertically downward by 0.5 to 2 meters, the data acquisition device is connected with the laser sensors, the data acquisition device is connected with the tower footing optical fiber reserved interface and is connected with the data storage and analysis device through the optical fiber, and the sensor power supply output interface is connected with the laser sensors. Through setting of the system, blade icing, cracking, breaking, paddle angle inconsistency and the like are diagnosed, blade online monitoring and analysis functions can be achieved, happening of accidents like blade breakage can be avoided, and safe running of a wind turbine generator is ensured.

The invention relates to a centrifugal fan. The centrifugal fan comprises a fan blade and a flow guide ring arranged in the fan blade, a permanent magnet structure is arranged on the outer edge of thefan blade, and a magnetic part is arranged on the flow guide ring. An upper magnetic pole of the magnetic part on the flow guide ring is the same as an inner side magnetic pole of the permanent magnet structure arranged on the outer edge of the fan blade, and a lower magnetic pole of the magnetic part on the flow guide ring is opposite to the inner side magnetic pole of the permanent magnet arranged on the outer edge of the fan blade. Through the magnetic pole arrangement mode, according to the property that poles repel each other and opposite poles attract each other, like poles repel each other between the top of an electromagnet and an inner arc surface of the permanent magnet, the fan blade is stressed upwards, opposite poles attract each other between the bottom of the electromagnetand the inner arc surface of the permanent magnet, and the fan blade is stressed upwards, the fan blade is lifted by upward resultant force, and the downward bias of an centrifugal fan impeller underthe action of gravity can be counteracted. Due to the fact that the magnetic force counteracts part of the weight of the impeller, the pressure of a motor bearing is reduced, oil lubrication failure caused by heating of the bearing is reduced, and the service life of the bearing is prolonged.