90results about How to "Guaranteed change" patented technology

The invention discloses a motion estimation method based on image features and three-dimensional information of a three-dimensional visual system. The method includes the first step of obtaining two-dimensional image information and space three-dimensional information corresponding to two-dimensional image pixels in real time on the basis of the three-dimensional visual system, the second step of controlling collection intervals between adjacent frames through the adoption of an adjacent frame sampling interval self-adaptive regulation method and automatically regulating the sampling intervals of the t+1 moment relative to the t moment according to the dot pair number of the effective matching image features between the frame at the t-1moment and the frame at the t moment, and the third step of synthesizing two-dimensional scene image features and three-dimensional point cloud information and carrying out three-dimensional motion estimation according to the matching point pair number of the current two-dimensional image features of the adjacent frames to obtain high-precision three-dimensional motion estimation. Through the method, on the basis of satisfying accuracy and reliability of the three-dimensional estimation, the calculated amount is effectively reduced, and the method has the advantages of being less in calculated amount, small in limitation to an application scene and the like.

The invention belongs to the field of microbial fermentation and provides a preparation method of a ferment fertilizer product with the sweetening effect. The preparation method comprises the following steps of by taking wastes, including inferior fruits, fallen fruits, fruit residues, vegetable straw and the like in agricultural production as raw materials, utilizing a mode of multiple fermentation to finally obtain the liquid ferment fertilizer with the sweetening effect. The obtained bacterial fertilizer has very good ecological benefits, and plants can absorb and convert the bacterial fertilizer to reach the effects of rapidly supplementing plant nutrients, accumulating sugar, and thus increasing the sweetness of fruits and promoting conversion absorption of components, including vitamins, bioactive enzyme and selenium in a product, thereby reaching the purposes of reducing acid, sweetening, removing acerbity and enhancing fresh from the source.

The invention discloses an adjustable high-flexibility low-pressure and stable-pressure pressure reducing valve, which comprises a valve body and a valve core component, wherein the valve body is provided with an inlet and an outlet; the valve core component is arranged in the valve body; a medium passage for communicating the inlet with the outlet is formed in the valve body; a throttling port is formed in the medium passage; the valve core component corresponds to the throttling port and is used for changing the medium pressure in front of and behind the throttling port; the valve core component comprises a valve core rack, a valve rod and a valve flap; the valve core rack is fixedly arranged in the valve body; the valve rod is arranged in the valve core rack; the valve flap is arranged at the lower end of the valve rod to change the flow rate of the medium passage; a sealing device is arranged between the valve rod and the valve core rack to isolate the upper part of the valve core rack from the lower part of the valve core rack; a pressure chamber in front of the valve is formed between the lower part of the valve core rack and the sealing device; the upper end of the valve core rack has a thin film structure, and a pressure chamber after the valve is formed between the upper end of the valve core rack and the upper part of the valve core rack; and a pressure adjusting structure is also arranged above the thin film structure. The valve has a simple and rational structure, is convenient to manufacture and mount, has high flexibility in pressure adjustment and has certain pressure stability, and the pressure adjustment range is adjustable.

To provide a switching regulator that needs, as a soft start circuit, no capacitor of a large time constant, exhibits a reduced variation in soft start time, also exhibits a shortened time in which a power supply voltage stabilization control starts, and that is suitable for circuit integration. [MEANS FOR SOLVING PROBLEMS] A step voltage signal is used to step raise or step lower the output voltage of a soft start circuit at a predetermined rate. The period in which the step voltage changes is established such that it is a predetermined period at a turn-on. A detecting circuit is used to monitor a PWM pulse output. The period in which the step voltage of the output signal of the soft start circuit changes is also established such that it is longer than the foregoing predetermined period in accordance with a timing at which the output changes from ''H'' to ''L'' or from ''L'' to ''H'' after the foregoing turn-on.

The invention relates to a portable self-adjustment wheel type probe bracket for a rail flaw detecting car, which belongs to the technical field of rail flaw detecting cars. The invention aims to provide a portable self-adjustment wheel type probe bracket for a rail flaw detecting car, which can enable the probe to be kept on the central line of the rail all the time and detect the rail state accurately. The portable self-adjustment wheel type probe bracket comprises front rail traveling wheels, rear rail traveling wheels, wheel axles, a chassis and a probe bracket, wherein the wheel axles are used for respectively connecting the front rail traveling wheels and the rear rail traveling wheels; the chassis is connected with the front and rear wheel axles; the probe bracket is connected between the front and rear wheel axles on the chassis, and provided with front and rear wheel axle connecting plates, a cantilever, an adjusting plate and a fixed plate; one front end and one side of the cantilever are respectively fixedly connected with the front and rear wheel axle connecting plates; the other ends of the front and rear wheel axle connecting plates are respectively connected with axial sleeves on the front and rear rail traveling wheels; both ends of the rear side of the cantilever are respectively fixedly connected with the adjusting plate and the fixed plate; the probe is installed between the adjusting plate and the fixed plate; and the front and rear wheel axles on the flange sides of the front and rear rail traveling wheels are respectively sheathed with a spring.

The invention discloses a video playing method based on the virtual reality technology. The method comprises the following steps: constructing a video playing scene, wherein the video playing scene comprises a first area used for playing a video and a second area located on the surrounding of the first area for providing a virtual scene; playing the video in the first area; and extracting a theme color in the video and rendering the virtual scene based on the theme color. The invention further discloses a video playing system based on the virtual reality technology. According to the video playing method and system based on the virtual reality technology in the invention, the theme color in the video is extracted to render the virtual scene beyond the video so as to create an immersive feeling through the light effect, therefore the immersion of users when watching videos in virtual reality can be enhanced, and the user experience can be improved.

The invention relates to a self-tuning type frequency conversion power generation device and a method. The self-tuning type frequency conversion power generation device is mainly used for energy collection of vibrating working environment. The self-tuning type frequency conversion power generation device comprises a guide rail, a sliding block, a piezoelectric vibrator, a mass block and a fixed device, wherein energy is collected by the piezoelectric vibrator of the self-tuning type frequency conversion power generation device. The self-tuning type frequency conversion power generation device changes a span of a system by the sliding block moving on the guide rail so as to achieve the aim of resonance frequency of a large-scale and high-accuracy adjusting device, and enable the self-tuning type frequency conversion power generation device to be adapted to different working environment in different working environment. The self-tuning type frequency conversion power generation device can be combined with a motion sensitive application sensor, and provides self-power generation monitoring ability.

The invention discloses a house renting management system based on wireless communication. The system comprises a user registration and login module, a renting information collection module, a renting information management module, a renting information update unit, a renting information display module, an identity verification module, a safety protection module and a fund module; the user registration and login module provides registration and login services for house owners or renters; the renting information management module is used to manage addition, deletion and modification of online house source information; the renting information update unit is used to update the online house source information regularly; the identity verification module verifies identities of the renters; the safety protection module keeps personal information of the renters secrete; and the fun module is used to pay or collect the rent. The system provides convenient and effective house source information for the renters, is characterized by being convenient, safe and rapid in the house renting process, and saves a lot of time for the renters and the house owners.

The invention relates to a novel buffer of a corrugated pipe, which mainly comprises a buffer tank body, a corrugated pipe elastic body and an air charging device, wherein the buffer tank body comprises a pipe connection, a buffer chamber rounded by a tank and a corrugated pipe, a cover of the buffer tank and a pressure gage in buffer chamber, the corrugated pipe elastic body comprises a lift limiter, a corrugated pipe, a spring, a spring holder, an air chamber formed by the corrugated pipe and the buffer tank cover, the air charging device comprises a charging valve, a pressure gage in air chamber. The mouthpiece of the pipe connection is connected with a lower end of the tank, the corrugated pipe elastic body is disposed at upper end of the tank with a buffer tank cover, and the air charging device and the pressure gage of the buffer chamber are disposed on the cover of the buffer tank. Comparing with prior art, the novel buffer of a corrugated pipe has the advantages of wide appliance, reliability and safety, good sealing property, convenient maintenance and the like.

The invention relates to a method and a device for the chain velvet making of a multi-crystalline solar cell. The invention adopts an overflow mode from four sides of a groove body to enable liquid to quickly overflow after reaction, and adopts a top spray mode that medical liquid is directly replenished to the periphery of silicon chips from the upper part so that the medical liquid can sufficiently contacts with the silicon chips, the temperature of the medical liquid is more beneficial to control and can be kept uniformly and velvet making effect can be improved. The invention adopts a liquid feeding mode from the groove bottom in the groove body, an liquid inlet faces downward, a liquid feeding pipeline is processed to control regulated flow, the upper part of an internal groove is provided with a weir crest, liquid entering from the liquid feeding pipeline upward overflows to the weir crest and flows into an external groove, the bottom of the external groove is provided with a liquid return opening which is connected with a medical liquid circulation supply groove through the pipeline, and the medical liquid flows back to the medical liquid circulation supply groove by gravity. The invention has the advantages of more easily controlling the temperature, effectively improving velvet making effect and product quality and reducing reflectivity, the temperature control accuracy can reach within + / -1 DEG C, and the reflectivity after velvet making can reach below 20 percent.

The invention discloses a new energy battery cell grabbing mechanical arm. The new energy battery cell grabbing mechanical arm comprises an installing base. Bearings are arranged on the two sides of the installing base. A driving rotation shaft is arranged in one bearing, and a driven rotation shaft is arranged in the other bearing. A rotation air cylinder is arranged on the outer side of the bearing provided with the driven rotation shaft, and the rotation air cylinder and the driven rotation shaft are connected. A rotation frame is arranged between the driving rotation shaft and the driven rotation shaft. An indexing executer is arranged on the inner side of the rotation frame, a connecting plate is arranged at the front end of the indexing executer, and an indexing mechanism is arrangedat the lower end of the connecting plate and provided with an indexing clamping claw. Through the structural design of the indexing mechanism, the new energy battery cell grabbing mechanical arm is applicable to cells distributed at different intervals, the distance span between the cells is large, and accordingly the application range of the grabbing mechanism is wide. Through the design of a U-shaped structure of the indexing clamping claw, it can be guaranteed that the diameter of the clamped battery cells is changed within a certain range, and accordingly grabbing of the cells different in specification can be achieved.

The invention discloses a vehicle body color adjusting method and a device, electronic equipment and a storage medium. The method comprises the steps of adjusting the color of a gray vehicle body areain an image to be a target color, and the light and shade values and saturation values of all pixel points in the adjusted vehicle body area are the same; inputting the adjusted vehicle body area into a pre-trained color correction model to obtain a corrected vehicle body area as a color adjustment result of the grayscale vehicle body area; wherein the brightness value and the saturation value ofeach pixel point in the corrected vehicle body area are not completely the same. According to the embodiment of the invention, the vehicle body color can be accurately adjusted to the color conforming to the real environment.

The invention discloses a control method of bored concrete pile impact holing and belongs to the technical field of bored concrete pile machines. A bored concrete pile comprises a percussion bit and a motor. The method includes the steps of firstly, selecting one point on the percussion bit, and recording the initial coordinates of the point on an X axis and a Z axis; secondly, detecting the current coordinates of the point on the X axis and the Z axis; thirdly, comparing the current coordinates with the initial coordinates to obtain varied coordinates, and comparing the varied coordinates with preset coordinate thresholds; fourthly, relating the current coordinates when the varied coordinates are larger than the preset coordinate thresholds to allow the current coordinates to be equal to the initial coordinates. The control method has the advantages that the impact positions of the percussion bit are detected in real time, the deviation coordinates of the percussion bit are regulated, and holes can be formed precisely.

The invention discloses two ultrasonic measurement methods and system for coded signal transmission on the basis of MIMO sparse array elements, and belongs to the technical field of ultrasonic measurement. The methods are used for measuring irregular fluctuation interfaces similar to fluctuation liquid levels and snow depths, and accuracy of distance measurement under the situation of the fluctuation interface is effectively improved. According to the methods, the sparse array is utilized for conducting ultrasonic measurement on the fluctuation interface at different angles, and two signal transmission modes, namely the time-sharing transmission mode and the simultaneous transmission mode, are adopted. According to the two transmission modes, signals are transmitted through the sparse array, and beam forming processing is carried out after channel separation of the signals is achieved. According to the methods, the echo signals of different virtual array elements can be effectively distinguished, the beam forming processing is facilitated, and accuracy of distance measurement of the fluctuation interface is improved; in addition, the simultaneous transmission mode is adopted to be applied to measurement of rapid changes of the fluctuation interface, distance ambiguity generated by the rapid changes of the fluctuation interface is avoided, and therefore the accuracy of the measurement is improved.

The invention relates to a method for operating a control device (12) for a braking system (14) of a motor vehicle (10), wherein the control device (12) receives a braking request (16) from a driver assistance system (11) and determines a target value (21) of a braking operation parameter of the braking system (14) and determines an ideal temporal process (22) for the braking operation parameter,which gradually leads to the target value (21), complying with a predetermined jerk criterion (24), and a determines a control fault (29) of an actual value (25) of the braking operation parameter inrelation to the ideal process (22) and determines a request value (18) for a controller (20) of a brake pressure pump (19) of the braking system (14) from the control fault (29) on the basis of a controller unit (PI). According to the invention, the control device (12) determines a maximum achievable temporal gradient (27) of the braking operation parameter by means of the brake pressure pump (19)and examines whether the gradient (27) fulfills a freezing criterion (33) and, in the case of the freezing criterion being fulfilled, limits at least one control operation parameter (31) of the controller unit (PI) and / or a gradient of the brake request (16).

The invention discloses an SPWM (Sinusoidal Pulse Width Modulation) power modulation method and system, which is applied to a controlled rectifier circuit or a semi-controlled rectifier circuit. The method comprises the following steps: determining a pulse width range, calculating the quantity of pulses according to the pulse width range, controlling an output voltage value of a rectifier circuit by adjusting a conduction angle of a controlled silicone rectifier element, and generating an equivalent sinusoidal pulse. According to the scheme, the controlled silicone rectifier element is applied, so that the changes of the quantity of the pulses and the output voltage value are realized, the changes of the quantity of the pulses and amplitude values are realized, and thus the phenomenon that a series of square wave pulses are changed according to the sine law is ensured; moreover, the situation that zero-crossing-point neighbouring square wave of a series of square wave pulses is lost is avoided, so that the defect that equivalent waveform is affected by modulation degree and carrier wave ratio in an existing SPWM modulation method is overcome.

The invention relates to a high pressure angle throttle valve which comprises a valve rod, a valve element assembly, a valve base, a sleeve and an angle valve body. The valve element assembly, the valve base and the sleeve are arranged in the valve body, the valve base is coaxially arranged below the sleeve, at least two longitudinal rows of throttle holes are annularly formed in the sleeve, at least part of throttle holes in part of longitudinal rows are staggered in the longitudinal direction, the lower end of the valve rod stretches into the valve body to be connected with the valve elementassembly, the number of the throttle holes to be opened is selected through up-down movement of the valve element assembly in the sleeve, sealing faces between a sealing shaft sleeve and the valve base have an angle difference of 2-5 degrees to form line seal, a coupling sleeve is in threaded connection with the valve rod, a plug pin prevents rotation, a pin hole of the valve rod is designed intoa U-shaped groove, therefore, the problem that pin hole machining precision and installation difficulty are too high is solved, and the valve rod can be moved up and down in the coupling sleeve to adjust the position. The high pressure angle throttle valve is reasonable in design, simple in structure, good in throttle effect, stable in performance, long in service life, safe, reliable, capable ofachieving high-precision adjustment and capable of cutting off media to close a fluid passage.

The invention discloses a combined water-cooling high-temperature wedge type single-disc gate valve. The combined water-cooling high-temperature wedge type single-disc gate valve comprises a valve body, a gate plate, a valve rod and a valve cover, wherein the gate plate is arranged in a chute in the middle part of the valve body; the upper end of the gate plate is connected with the valve rod; the upper half part of the valve rod is matched with sealing fillings in a sealing box arranged at the upper part of the valve cover, stretches out from a filling gland arranged at the upper part of the sealing box and then is connected with an actuator through the matching of a T-shaped nut on a support arranged at the upper end of the valve cover; the actuator drives the gate plate to do up-and-down motion so as to realize turning on and off of a valve; the valve cover on the valve body is fixed through a first fastener; a combined annular water-cooling heat-dissipation water tank is arranged on the outer part of the valve cover; circulating water is arranged in the water tank. According to the structure designed by the invention, the neck part of the valve cover is provided with a heat dissipation device, the temperature in the position of a packing box is obviously reduced, the using performance of fillings is directly enhanced, the service life of the fillings is prolonged, the sealing stability of the fillings is increased, and the possibility of causing sealing leakage is obviously reduced.

The invention provides an ice surface sliding tool and belongs to the technical field of sliding tools. The ice surface sliding tool aims at solving the problems that power output and durability are poor, and large-scale popularization is difficult. The ice surface sliding tool comprises a seat board, a U-shaped rod, H-shaped connecting frames, sliding boards, a pushing device, a hand-rocking chain wheel and turning gears. A backrest is arranged at one end of the upper end face of the seat board, the U-shaped rod is arranged on the side wall at the other end of the seat board, the two slidingboards are symmetrically arranged in parallel at the lower end of the seat board through the H-shaped connecting frames, the pushing device is arranged between the two H-shaped connecting frames, andthe hand-rocking chain wheel is arranged at the upper end of the U-shaped rod through a strut. The problems that power output and durability are poor, and large-scale popularization is difficult are solved, so that the effects that power output is continuously effective, meanwhile, the resistance of the sliding tool in the sliding stage can be reduced, the sliding distance is long, durability is strong, and popularization is easy are achieved.

The invention discloses an engineering machinery bucket tooth induction heating structure repairing device and method. The engineering machinery bucket tooth induction heating structure repairing device comprises a folding coil, bucket teeth, supercharging balls, a water spraying cooling bin and the like, wherein a structure repairing layer is formed on the surface of the sharp portion of bucket teeth through induction heating of the folding coil; the upper end face and the lower end face of the folding coil are fixedly connected with positive and negative connection boards capable of making currents; cooling water flows in the water spraying cooling bin; grooves formed in the two end faces of the water spraying cooling bin are correspondingly provided with rotary shafts; each rotary shaftis provided with the two supercharging balls; each supercharging ball corresponds to a protrusive hemisphere ejector; the shaft shoulder position of each rotary shaft is fixedly provided with a rotary sliding bearing; each sliding bearing is installed in the grooves in the horizontal fracture surfaces of two sides of the corresponding supercharging ball and is in rolling connection with the corresponding rotary shaft fixedly; the cooling water inside the water spraying cooling bin flows in the pressure water flow direction; and cooling bin water ports are formed in the upper end face and thelower end face of the water spraying cooling bin. The engineering machinery bucket tooth induction heating structure repairing device and method not only ensure normal changes of the structure of therepairing layer, but also save energy resources.

The invention discloses a voltage regulator, which comprises a circuit part. The circuit part is respectively connected with a transistor and a central control unit. The central control unit is connected with a protecting circuit, the protecting circuit is connected with the transistor, and the central control unit is also connected with an excitation current controller; the circuit part comprises a voltage setting part, and a reference voltage set value is set; and a controlled transfer function is adopted by the central control unit after being optimized.

A wiper control method and a wiper control device which can stabilize wiping rhythm of a wiper while ensuring required wiping and smoothly respond to change of a rainfall situation are provided. An adhesion cycle of a raindrop adhering on a detection surface is detected, a current adhesion cycle to be the basis when determining an intermittence time of a wiper is determined based on the detected raindrop adhesion cycle, the wiper intermittence time is determined based on the current adhesion cycle, a raindrop adhesion cycle shorter than the current adhesion cycle is detected, and when the raindrop adhesion cycle shorter than the current adhesion cycle is detected a predetermined number of times, the current adhesion cycle is changed to a shorter adhesion cycle and the wiper intermittence time is determined based on the changed current adhesion cycle.

The invention discloses an Internet of Things novel transport bag used for packing originally ecological food and a use method thereof. The transport bag mainly comprises a bag body, a two-dimension code printing part and a rope, wherein the bag body is made of degradable materials, three sides of the bag body are sealed, and the other side of the bag body is provided with a clamping chain sealing part; the clamping chain sealing part is provided with threading holes; the two-dimension code printing part is located on the bag body, and the side close to the clamping chain sealing part is provided with a locating area; one end of the rope is fixedly tied to the locating area, the other end of the rope is buckled with the bag body, and the strength of connection between the rope and the locating area is smaller than the strength of the rope and the strength of buckling between the rope and the bag body. The Internet of Things novel transport bag has the advantages of good sealing performance, convenient use and low manufacture cost.

The invention relates to a rubber part broaching machine for a simple wire harness. The broaching machine comprises a support bracket, a working platform, a pedal, a pull rod, a broaching rod pull rod and a broaching rod, wherein the support bracket is connected with the working platform; the pedal is arranged on the lower part of the support bracket; one end of the pull rod is articulated with the pedal and the other end of the pull rod is articulated with the broaching rod pull rod; the broaching rod comprises two symmetrical parts, wherein one part is fixed to the working platform, and the other part is connected with the broaching rod pull rod. In comparison with the prior art, the rubber part broaching machine is safe, reliable and convenient to use, and the production efficiency is greatly improved.

The invention discloses a CELL_FACH flow control method in an HSPA+ system. A length TFC_period of a period timer is preconfigured. The length TFC_period of the period timer is a flow control period. An end moment of the each flow control period is a period flow control point. The method comprises the following steps that: each subframe determines whether the period timer is expired; if the period timer is expired, a period timing triggering mode is used to perform the flow control of an Iub port; otherwise, a specific event triggering mode is used to perform the flow control of the Iub port. In the invention, aiming at the flow control of the Iub port in a CELL_FACH state, a complete solution scheme is provided. And by using the method of the invention, the flow of the Iub port under the CELL_FACH state in the HSPA+ system can be controlled.