99results about How to "More difficult to avoid" patented technology

The invention discloses an attitude control method and system for a quad-rotor aircraft based on an auto-disturbance rejection control technology, and can effectively improve the robustness of the attitude control of the quad-rotor aircraft. The method comprises the following steps of using auto-disturbance rejection control to implement angular velocity loop control in attitude control; in an auto-disturbance rejection controller, obtaining given angular velocity and angular acceleration after performing smooth noise reduction on a given angular velocity signal by a tracking differentiator; adopting a second-order extended state observer, and performing observation and estimation on the state of each order of the angular velocity control model, internal and external disturbances acting onthe model and the sum of system un-modeled dynamics by using the feedback angular velocity of the controlled object and the control quantity u(t-tau) added to the motor response delay; using the difference between the output quantity of the observer and the given quantity to obtain a preliminary control quantity through the calculation of a nonlinear control rate, using the disturbance estimationquantity obtained by the observer to perform compensation on the basis of the preliminary control quantity, and obtaining the final output control quantity u(t).

The invention provides a hole drilling and protecting construction method of a soft-broken coal seam. The method comprises the steps that a soft-broken coal seam hole drilling and protecting device is installed at a drill hole of a coal seam roadway; the drill hole is supported while hole drilling and broaching operation is conducted through the hole drilling and protecting construction method of the soft-broken coal seam, and extraction of a drilling tool is prevented from being influenced by collapse and contraction; and high-pressure airflow of a rotary sealing water and air supplying device pushes a water flow to reach a central backflow drill bit, and water slag is outwards discharged through an inner chip removal drill rod. According to the hole drilling and protecting construction method of the soft-broken coal seam, the condition that formed holes are destroyed by an outer chip removal water flow and the drill bit when the drill bit is pulled out is avoided, the problems that the formed holes in the soft-broken coal seam are prone to collapsing and contracting, and gas is not prone to being discharged can be effectively solved, and the gas extraction quality is improved; and the speed of gas extraction hole construction is increased, construction safety is ensured, and the hole drilling and protecting construction method is an innovation for the soft-broken coal seam hole drilling and protecting device.

The invention discloses a service arrangement and business process processing method and device applied to SaaS, and relates to the technical field of computers. A specific embodiment of the method comprises the following steps of receiving a service calling request, analyzing the service calling request, and obtaining a to-be-called target service identifier; if the target service corresponding to the target service identifier does not exist in the preset service list, obtaining a micro service and / or a combined service corresponding to the target service identifier; and arranging the acquired micro-service and / or the combination service to generate a target service. According to the embodiment, the service arrangement can be carried out based on the existing micro services and / or combined services, the target services needing to be called are obtained, and the service support is provided for service expansion and subsequent customer-oriented business process design; and standard services and customer services can be integrated through a service interface, so that the problem that integration specifications are difficult to unify in the prior art is solved, and a good implementation effect is achieved.

The invention provides an electric promoting eluting and removing device and an electric promoting eluting and removing method for soil heavy metal based on an electric geotextile. An eluting agent is applied to heavy metal polluted soil and the eluting agent and soil are uniformly mixed through a plowing machine, so that the heavy metal in the soil is desorbed into a soil solution through eluting; EKG electrodes are buried into the soil at intervals in parallel and are used as anode and cathode materials of electrodynamics; an interval electrifying manner is adopted under the potential gradient of 0.2V / cm-4V / cm, so that the heavy metal with positive charges in the farmland soil is desorbed into the soil solution through eluting, and is enriched to a cathode under the action of an electric field; then the heavy metal is transferred out of the soil under the action of circulating washing of electrode liquid; and the washed electrode liquid is treated and then is circularly used for washing an electrode. By adopting the electric promoting eluting and removing device and method, the effect of chemical eluting can be improved and the discharging of an eluent is promoted; and meanwhile, the problem of soil acidification and alkalization in an electric remediation process is effectively avoided, and the electrode can be conveniently and rapidly mounted and used in field.

A sewage and sludge dehydrating device coupling electroosmosis and mechanical pressure filtration is disclosed. The device includes a pressure filtration container (1), an anode plate (2), a cathode plate (3) and a direct current source (4). The anode plate (2) is disposed at the upper part of the pressure filtration container (1). The cathode plate (3) is disposed at the lower part of the pressure filtration container (1). The cathode and anode of the direct current source (4) are respectively electrically connected to the anode plate (2) and the cathode plate (3). The anode plate (2) and the cathode plate (3) are provided with water outlet holes (5) on which filter cloths (5.1) are paved. The cathode plate (3) is connected to a hydraulic system (6) used for driving the cathode plate (3) to move. Through adoption of the device, sludge resistance in an anode layer is slow in increase, dehydration effects are good, and the water content distribution at the sludge thickness direction is uniform.

The invention provides a quantum dot electroluminescent device and a preparation method thereof. The quantum dot electroluminescent device comprises a first electrode layer; a quantum dot light emitting layer disposed on the surface of the first electrode layer; a functional layer disposed on a surface of the quantum dot light emitting layer remote from the first electrode layer, the functional layer includes a first sub-functional layer, a second sub-functional layer and a third sub-functional layer stacked in sequence, the second sub-functional layer comprises an electron transport material,the band gap widths of the materials corresponding to the first and third sub-functional layers are larger than that of the electron transport material, the highest occupied molecular orbital energylevels of the materials corresponding to the first and third sub-functional layers are smaller than that of the electron transport materials, and the lowest unoccupied molecular orbital energy levelsof the materials corresponding to the first and third sub-functional layers are larger than that of the electron transport materials, respectively. A second electrode layer disposed on a surface of the functional layer remote from the quantum dot light emitting layer. By adoption of the quantum dot electroluminescent device, while balanced carrier injection is realized, the material applicabilityis improved.

The invention discloses a universal system for supporting the internet of things. The universal system comprises a user program management module, a system management and control module and a sensor network. The user program management module is used for applying for an existing program or inputting a customized program according to user needs and receiving operation data of the internet of things. The system management and control module is connected with the user program management module, and is used for transmitting the existing program or the customized program and feeding back the operation data of the internet of things to the user program management module. The sensor network is connected with the system management and control module, and is used for operating the existing program or the customized program transmitted by the system management and control module to obtain the operation data and management data of the internet of things, and then sending the operation data and the management data of the internet of things to the system management and control module. The universal system builds a universal platform for different kinds of the internet of things, effectively solves the problem that platforms of the internet of things are difficult to unify due to service development of the internet of things and expansion of the market, facilitates service development of suppliers of the internet of things, and provides a good universal platform environment for application of the internet of things.

The invention provides an ODN system and a working method thereof. The system comprises: an operation supporting system OSS, an intelligent management terminal, an intelligent ODN facility and an electronic tag carrier, wherein the OSS is connected with an intelligent management terminal, and the intelligent management terminal and the electronic device The tag carrier are connected through a communication interface, an optical fiber connector of the electronic tag carrier is inserted into an optical fiber port corresponding to the optical fiber connector of the intelligent ODN facility, and alightened radio frequency identification RFID tag is arranged on the optical fiber connector, the intelligent management terminal and / or the intelligent ODN facility comprises a read-write head antenna for lightening the RFID tag by emitting electromagnetic waves. By adoption of the ODN system, the problem that it is difficult to modify the traditional ODN network by inserting an electronic tag eID corresponding to the optical fiber connector in the related art is solved, and the cost is reduced.

Disclosed are a heat regenerator, a miniature gas turbine comprising the heat regenerator and a miniature gas turbine generator unit. The heat regenerator comprises a shell and a plurality of heat exchanging plates; each heat exchanging plate comprises a first heat exchanging element, a second medium flow-guiding sheet and a second heat exchanging element, and the first heat exchanging elements and the second heat exchanging elements each comprise a first medium flow-guiding sheet I, a heat exchanging fin and a first medium flow-guiding sheet II; first medium channels are formed by the heat exchanging fins of the first heat exchanging elements and the second heat exchanging elements of the adjacent heat exchanging plates; and a second medium channel is formed by the heat exchanging fins ofthe first heat exchanging element and the second heat exchanging element of each heat exchanging plate. According to the heat regenerator, the heat exchanging efficiency is improved by increasing theheat exchanging area, and the size is decreased so that the heat regenerator can be applied modularly, and compressed gas introduced into a combustor is heated through heat of high-temperature tail gas so as to increase the combustion rate of fuel.

The invention provides a dust cover matching a hand-held electric drill. The hand-held electric drill includes a nesting portion, a support sleeve and a dustproof sleeve; the nesting portion is positioned on a fixing portion in the front edge of the electric drill; the support sleeve is connected to the nesting portion and surrounds and isolates a rotation portion of the electric drill; the dustproof sleeve is connected to the other end of the support sleeve, and a drill bit of the electric drill is hidden in the dustproof cover; the dustproof sleeve includes a telescopic sleeve body and a spring; and a limiting device is added, and the limiting device includes a ruler strip parallel to the dustproof sleeve and a limiting block fixed on an outer edge side of the support sleeve. Accordingly, drilling cuttings and dust generated in a drilling process of the electric drill can be collected in the dustproof sleeve, and influence on environment and health due to drilling cutting and dust leakage can be avoided.

The invention relates to the technical field of engine equipment, in particular to a micro gas turbine generator set, which comprises an electric generator, a gas compressor and a turbine, a combustion chamber and a nozzle. The electric generator, the gas compressor and the turbine are mounted on a rotating shaft; an outlet end of the nozzle is inserted into the combustion chamber; an exhaust endof the gas compressor is in communication with the combustion chamber; and an exhaust end of the combustion chamber is in communication with the turbine. The micro gas turbine generator set further comprises a heat regenerator; the heat regenerator is provided with a first channel and a second channel that are isolated and in close contact with each other; an inlet of the first channel is in communication with the exhaust end of the gas compressor; the outlet of the first channel is in communication with the combustion chamber; and the inlet of the second channel communicates with the exhaustend of the turbine. The air entering the combustion chamber can be preheated through the heat regenerator, thereby improving the temperature of the air entering the combustion chamber and further improving the combustion efficiency, reducing the content of pollutants in the exhaust gas and reducing the temperature of the exhaust gas at the same time.

The invention discloses a cloth-shaped nickel-based brazing material and a preparation method and application thereof. The cloth-shaped nickel-based brazing material is formed by mixing nickel-based alloy powder, hard alloy powder and an organic forming agent and is macroscopically shaped like cloth. During use, the cloth-shaped nickel-based brazing material can be cut for use and can be cut in any shape according to the requirement of a brazing-coated workpiece; and the thickness of the cloth-shaped nickel-based brazing material can be adjusted through a calendaring process, so that the defect that nickel-based brazing powder cannot be shaped is avoided, and meanwhile the hardness of a brazing coating is improved.

The invention discloses a low-environmental-temperature type air source heat pump. The low-environmental-temperature type air source heat pump comprises a box body, a dustproof plate, an evaporator and a filtering pipe, wherein an air inlet is formed in the top end of the box body, and a heat dissipating plate is mounted on the surface of the box body; the side edge of the dustproof plate is connected to the side edge of the air inlet; two ends of the evaporator are mounted at the upper end of the inner wall of the box body; a compressor is mounted in the middle of the inner wall of the box body, and the bottom part of the compressor is connected to an exchanger; heating copper tubes are mounted in the exchanger, and a hot water port and a cold water port are correspondingly formed in twoends of the exchanger; the filtering pipe is mounted on the outer wall of the box body; and one end of the filtering pipe is connected to the cold water port. According to the low-environmental-temperature type air source heat pump, the heat dissipating plate, so that the problem that heat is hardly dissipated when equipment runs; and water can be filtered through a filtering element in the filtering pipe, so that the problem that the water cannot be filtered before being heated and easily leads to dirt in the exchanger can be solved.

The invention discloses an electroosmosis and pressure filtration coupled sewage sludge dehydrating device, which comprises a pressure filtration container (1), an anode plate (2), a cathode plate (3) and a direct-current power supply (4), wherein the anode plate (2) is arranged at the upper part of the pressure filtration container (1); the cathode plate (3) is arranged at the lower part of the pressure filtration container (1); a positive electrode and a negative electrode of the direct-current power supply (4) are electrically connected with the anode plate (2) and the cathode plate (3) respectively; the anode plate (2) and the cathode plate (3) are both provided with water outlet holes (5); filter clothes (5.1) are laid on the water outlet holes (5); the anode plate (3) is connected with a hydraulic system (6) used for driving the anode plate (3) to move. By adopting the electroosmosis and pressure filtration coupled sewage sludge dehydrating device, the resistance of sludge on an anode layer is increased slowly; the dehydration effect is good; the moisture content, in the thickness direction, of the sludge is uniformly distributed.

The invention provides a method for editing a bond in an organic chemical structural formula. The method comprises the following steps of: monitoring input from a keyboard; determining a focus on the organic chemical structural formula in an interactive chemical layout interface; and responding to the input according to whether the focus is an atom or bond so as to edit the bond in the organic chemical structural formula. The invention also provides a device for editing a bond in an organic chemical structural formula. The device comprises a monitoring device, a focus module and an editing module, wherein the monitoring module is used for monitoring input from a keyboard; and the focus module is used for determining a focus on the organic chemical structural formula of an interactive chemical layout interface; and the editing module is used for responding to the input according to whether the focus is an atom or a bond so as to edit the bond in the organic chemical structural formula. With the device and the method, the operation efficiency in editing the bond in the organic chemical structural formula is improved.

The invention discloses a glue discharging device and a wall face tile gluing paving and pasting robot. The glue discharging device comprises a storage barrel, a pressurizing mechanism, a conveying pipeline and a screw pump assembly. The storage barrel is used for storing tile glue and provided with a glue discharging port communicating with the outside. The pressurizing mechanism is used for pressurizing the interior of the storage barrel so that the tile glue can be discharged out of the glue discharging port. The conveying pipeline is connected with the glue discharging port and used for communicating with the storage barrel and a tile gluing device. The screw pump assembly is arranged at the bottom of the storage barrel, and a screw of the screw pump assembly is arranged to rotate in the conveying pipeline so that the tile glue in the conveying pipe can be discharged to the tile gluing device. According to the glue discharging device, the manner of the joint action of the screw pump assembly and pressurizing is adopted, it can be guaranteed that the tile glue large in viscosity in the storage barrel is evenly and stably discharged, the problem that the sticky tile glue is not prone to being discharged is solved, and the wall face tile paving and pasting efficiency is greatly improved.

The invention provides an external wireless resource intelligent system for a projector. The system comprises an intelligent hardware, wherein, the intelligent hardware comprises a protective shell; apower module is arranged in the protective shell; the power module is connected with a central processor; the central processor is respectively connected with a communication module, a Bluetooth module and an image audio processing module; the power module is connected with a central processor; the Bluetooth module is connected with an image audio processing module. The communication module is respectively connected with a background server and a cloud server, the background server is respectively connected with a control terminal and a cloud database, and the cloud database is connected withthe cloud server. The Bluetooth module is connected with a Bluetooth sound equipment. As that traditional projector is connected with the traditional projector, the traditional projector can be promoted to an intelligent projector, the cloud storage of the us resources is realized, and the user can freely select resource for playing, thus solving the restriction of playing resource conditions such as difficult matching between the traditional projector and the notebook port, tedious wiring and the like, and the cost is low, and the invention has a good market popularization prospect.

The invention relates to a position prompting method and system for a mobile terminal and a mobile terminal. The position prompting method is applied to a first mobile terminal and comprises the following steps of: acquiring environment information of an environment where the first mobile terminal is positioned; according to the environment information of the environment where the first mobile terminal is positioned, opening a communication module in the first mobile terminal; by the communication module, receiving a first target search instruction sent out by a second mobile terminal; and when determining that the received target search instruction is matched with a preset search instruction, triggering a prompting module to carry out position promoting. According to the invention, an effect of constructing a search strategy when the mobile terminal is lost by utilizing the communication module (Bluetooth or wifi) in the mobile terminal is achieved, current limiting pre-conditions ofcarrying out searching of the mobile terminal by using the communication module (Bluetooth or wifi) can be effectively reduced, and when the searched mobile terminal opens the communication module (Bluetooth or wifi), but does not carry out connection, searching can also be implemented, so that a searching effective rate is improved.

The invention discloses a mouse device comprising a base, a circuit board arranged on the base and provided with a microswitch, a swing seat with a trigger arm and a forward bending arm and a roller.The base has upright hooks protruding along the Z-axis. The trigger arm extends toward the microswitch, The forward bending arm has a slot end portion and first and second side arm portions inclined outwardly from both sides of the slot end portion toward the base along the Z-axis to form a trumpet-shaped limit space, respectively, and an upright snap hook passes through the trumpet-shaped limit space and is snapped to the slot end portion to deflectively dispose the swing seat on the base with respect to the X-axis. The forward bending arm includes a slot end portion and first and second sidearm portions inclined outwardly from both sides of the slot end portion to form a trumpet-shaped limit space. The roller is rotatably arranged on the swing seat with respect to the Y axis. The roll is forced laterally to drive the swing seat to deflect toward the microswitch, the trigger arm bias-triggers the microswitch, and the first side arm portion laterally abuts against the first side of the upright hook.

The invention discloses a method for developing a molecular marker interlocked with a specific chromosome region of wheat and relates to the technical field of agricultural living things. Orthologous genes determined by EST co-linear relation in wheat deletion positioning and corresponding SNP are utilized as original sequences for developing the markers, wheat genomic sequences obtained through sequence comparison and sequences obtained through sequencing serve as main sequences for developing the markers, sequence feature analysis is conducted on the obtained wheat genomic sequences and the sequences obtained through sequencing so as to design corresponding SSR, STS, CAPS and dCAPS markers; the developed markers sequentially undergo BSA analysis, genotype analysis and diagraph analysis, and the molecular marker interlocked with the specific chromosome region of wheat is obtained. By adopting the method, the shortcoming of the low density of the molecular marker of wheat is overcome, and the problem that the molecular marker of wheat in the specific chromosome region is difficult to mark is very well solved.

The invention discloses a shaping mold of an X-shaped ring. The shaping mold comprises an upper mold plate, a lower mold plate and a mold head assembly, wherein the mold head assembly is provided witha mold cavity for shaping the X-shaped ring; salient points extending in the internal upward direction and extending in the external upward direction are formed in the upper part of the mold cavity correspondingly, salient points extending in the internal downward direction and extending in the external downward direction are formed in the lower part of the mold cavity correspondingly, and the mold head assembly treats a ring-shaped circular cone surface on which a connecting line of two of the salient points which are away from each other is located as a mold dividing surface to be divided into a concave mold and a convex mold which is matched with the concave mold; and in one group of the mold head assembly, one of the concave mold and the convex mold is an upper mold head which is installed on the upper mold plate, and the other one of the concave mold and the convex mold is a lower mold head which is installed on the lower mold plate. Due to the fact that the ring-shaped circularcone surface on which the connecting line of two of the salient points which are away from each other is located is the mold dividing surface, on the parts of the convex mold and the concave mold on which the mold cavity is located, cross section groove widths are in a decrement shape from the groove openings to the groove bottoms, machining form the external to the internal using a profiling cutter head is convenient, the machining efficiency can be fully improved, and the machining precision is ensured.

The invention discloses a multi-view-angle-based multi-task liver tumor image segmentation method. After an abdominal CT image is preprocessed, liver segmentation and tumor segmentation of the abdominal CT image are obtained at the same time in a slice form through a convolutional neural network model. The input of the model is a three-dimensional CT slice with the size of 256 * 256 * 3, and the output of the model is corresponding segmentation of a middle slice. The model comprises a segmentation module and a fine trimming module, and a rough segmentation result and a fine trimming segmentation result are obtained respectively. The model is optimized through a combined loss function, and instability in the optimization process is avoided. According to the method, segmentation is carried out from three perspectives of a three-dimensional CT image, and three segmentation results are fused into one to obtain a final segmentation result. According to the method, liver and tumor segmentation of the abdominal CT image is realized, and the problems that three-dimensional space information cannot be utilized and optimization is unstable in the segmentation process are effectively solved.

The invention aims to provide an ultra-thick graphite heat-conducting film. The graphite heat-conducting film is obtained by carbonizing, graphitizing, rolling and cutting a polyimide film, wherein the thickness of the graphite heat-conducting film is 40-90 microns, and the heat conductivity of the graphite heat-conducting film is greater than 1600 W / (m.K). The polyimide film is a three-layer co-extrusion type polyimide film, wherein foaming layers are arranged on two sides, and a middle layer is a core layer. According to the ultra-thick graphite heat-conducting film prepared in the invention, the defects of layering, powder falling, cracking and the like of the graphite film caused by unsmooth gas discharge in a firing process are avoided.

The invention discloses a comprehensive treatment mechanism for building waste sweeping. The comprehensive treatment mechanism comprises a base. An electric control cabinet is connected to the centerof the front surface of the base in an inlaid mode. A second chain wheel is mounted at and connected to the bottom of the left side of the base through a bearing seat. A conveying belt is mounted at and connected to the middle section of the top end surface of the base. A comprehensive treatment box is fixedly connected to the position, on the two sides of the conveying belt, of the surface of thetop of the base through brackets. A first chain wheel is rotationally connected to the surface of the upper end of the left side of the comprehensive treatment box through a servo motor. The positionbetween the first chain wheel and the second chain wheel is in chain transmission connection with a sweeping bucket through a chain. The upper portion of the inner side wall of the comprehensive treatment box is slidably connected with a screening net through a guiding rail. A set of rolling wheels is fixedly connected under the screening net. The rolling wheels are connected in an engaged mode.According to the comprehensive treatment mechanism, by arranging the sweeping bucket, the screening net, the rolling wheels, the guiding rail, a guiding-out opening and a side plate structure, the advantages that the cost is saved, the sweeping efficiency is high, and filter residues are easy to discharge are achieved.

The invention relates to aluminate-niobate glass and a preparation method and application thereof. The aluminate-niobate glass contains, by mol, 5-20% of Nb2O5, 20-65% of Al2O3, 10-60% of La2O3, 10-20% (not including 10%) of BaO, and 0-10% (not including 0) of other oxides. The problem is solved that high-refractivity glass has high melting temperature, proneness to crystal separation, poor stability and the like; the aluminate-niobate glass with high refractivity and low color dispersion can be attained.

The invention discloses a cleaning device for a ultrasonic vibration screen. The cleaning device comprises a base; a water tank is mounted in the base; a power supply box is mounted on one side of thetop end surface of the base through a fixed base; the other side of the top end surface of the base is fixedly connected with a water gun through a support column; a second box is mounted in the center position of the top end surface of the base; the top of the second box is fixedly connected with a first box; the first box and the second box are fixedly connected through a bolt arranged in a bearing base; a screening chamber is mounted in the first box; a dust collecting chamber is formed in the second box below the first box; a set of cylinders is mounted on two sides in the second box; andthe front ends of the cylinders are welded with the bottom surface of the first box. Through arrangement of the cylinders, the water tank, a water pump, the water gun, the vibration motor, a vibration spring and a vibration plate structure, the cleaning device has the advantages of easy discharge of impurities, high efficiency and convenience to clean the whole device.

The invention discloses an abdominocentesis needle guiding and directing device which comprises a fixed seat and a mounting ferrule connected with the fixed seat and used for being provided with a B-mode ultrasound probe. The lower end and the upper end of the fixed seat are connected with a lower swing rod set and an upper swing rod set respectively, and a guide sleeve component is mounted at thetail end of each swing rod set. There are always two supporting points for constraining a guide sleeve no matter at which angle and height the guide sleeve is adjusted, and stability of the guide sleeve can be improved by means of utilizing the supporting points to fix the guide sleeve from two ends. A laser device can be mounted at a position where a lower-portion main swing rod and a lower-portion auxiliary swing rod are hinged, and swing amplitude of the laser device is half that of the guide sleeve, so that a projection extension line of the laser device passes the tail end of a puncturepoint positioned in an abdominal cavity.

The invention discloses a shock absorption meter for a synthetic surface of a track field. The meter is characterized in that a force transducer (3) is arranged between a force measurement table (3) and a force measurement sleeve (5), the force measurement sleeve (5) is movably sheathed in a guide sleeve (7), the guide sleeve (7) is fixedly arranged on a base plate (30); a spring (6) and an anvil (8) are arranged in the force measurement sleeve (5), a shock probe (23) is arranged at the upper part of the anvil (8) in a suspension manner, a fixed end of the shock probe (23) is connected with a weight dropper (20), the weight dropper (20) is sheathed on a weight dropper guiding shaft (22) and is suspended on a hook (11) by a suspension ring (19), the hook (11) is connected with a release handle (18) and hinged on a hanging bracket (12), a hanging bracket sleeve (14) is fixed on a top plate (1); a weight dropper lifting frame (10) is sheathed on a lifting guiding shaft (32) and is arranged at the lower part of the weight dropper (20), a pedal (24) is sheathed on a pedal guiding shaft (33), and the pedal (24) is connected with the weight dropper lifting frame (10) by a pulling rope (34) which passed through a pulley (17). The meter has the advantages of simple structure and convenient manufacture and use.

The invention discloses a system and a method for monitoring power of a hydraulic system. The system for monitoring the power of the hydraulic system comprises a first pressure acquisition device, a second pressure acquisition device and a controller, wherein the first pressure acquisition device is used for acquiring a first pressure value at a control oil circuit inlet of a hydraulic control valve in the hydraulic system; the second pressure acquisition device is used for acquiring a second pressure value at an execution oil circuit outlet of the hydraulic control valve in the hydraulic system; and the controller is used for receiving the first pressure value acquired by the first pressure acquisition device and the second pressure value acquired by the second pressure acquisition device, determining the flow rate of an execution oil circuit of the hydraulic control valve according to the first pressure value and determining the power of the hydraulic system according to the flow rate and the second pressure value. According to the system and the method, pressure acquisition units are arranged at the control oil circuit inlet and the execution oil circuit outlet respectively, the power of the hydraulic system is determined according to the pressure values acquired by the pressure acquisition units, the measuring accuracy is higher, and the usage range is wider. In addition, sensors required by the system and the method have a single type and are easy to arrange.