64results about How to "Overcome constraints" patented technology

The invention discloses a three-dimensional human body posture estimation method and device. The method comprises the following steps of S1, using a monocular camera to collect the depth images and the RGB color images of a human body at different angles; S2, constructing a human body skeleton key point detection nerve network based on the RGB color images, and obtaining a key point labeling image; S3, constructing hand joint node 2D-3D mapping network; S4, calibrating the depth image of the human body at the same angle and the key point labeling image, and then carrying out three-dimensionalpoint cloud color conversion on the corresponding depth image so as to obtain a colored depth image; S5, based on the key point labeling image and the colored depth image, using a preset learning network to predict the corresponding position of the labeled human body skeleton key point in the depth image; and S6, combining the outputs of the step S3 and the step S5 to achieve the refined estimation of three-dimensional human body posture estimation.

Provided is a camera motion estimation method and apparatus that may estimate a motion of a depth camera in real time. The camera motion estimation apparatus may extract an intersection point from plane information of a depth image, calculate a feature point associated with each of planes included in the plane information using the extracted intersection point, and extract a motion of a depth camera providing the depth image using the feature point. Accordingly, in an environment where an illumination environment dynamically varies, or regardless of a texture state within a space, the camera motion estimation apparatus may estimate a camera motion.

The invention relates to a fast scanning method of pipeline drawbacks and a non-destructive detection device, which is more particularly suitable for fast scanning and non-destructive detection of drawbacks of the pipelines with insulation. The invention is composed of a guided wave sensor, a transmitting module, a receiving module, a signal generating module, a power amplifying module, a signal processing module, an A/D conversion module and an built-in computer system. The invention is suitable for comprehensive detection of drawbacks of pipelines with different diameters, detection of long distance pipelines, and detection of pipelines in inaccessible places. The invention has the advantages of fast and large-scale detection ability without contact, high efficiency; overcoming a plurality of limitations of the conventional non-destructive detection method; overcoming the restriction conditions of oil pollution, fouling, bending or heat insulation protective layer, judging and locating the drawbacks of the pipelines, reducing the maintenance range, avoiding unnecessary disassembly and replacement, reducing the intensity of artificial detection, and saving the human and material resource. In addition, the invention can achieve on-line monitoring, and evaluate the health condition of the element or predicts the service life of the element.

The invention relates to the technical field of fiber sensing, and especially to a pre-pumped pulse and Gray code based BOTDA instrument. The BOTDA instrument comprises a narrow-linewidth semiconductor sensor, a coupler, a first erbium doped fiber amplifier, a first polarization controller, a single sideband modulator, a microwave source, an optical isolator, a sensing fiber, an optical annular device, a second erbium doped fiber amplifier, a polarization scrambler, an electro-optical intensity modulator, a second polarization controller, an arbitrary waveform generator, an optical filter, a photoelectric detector and a signal collecting and processing system. On the premise that the high spatial resolution of a BOTDA system is maintained, the BOTDA instrument ensures the sensing distance and the measuring precision of the system, and improves the sensing performance of the system.

The invention discloses a tree wrapping machine comprising a base, on which a round turntable, two friction wheels, a DC motor, a storage battery, a speed-changing reverse mechanism and two gears are arranged, wherein the round turntable can rotate around a circular guide rail and has a 1/4 arc gap. The output belt wheel of the speed-changing reverse mechanism is rotationally connected with the friction wheels through a V-shaped belt; the friction wheels are rotationally connected with the lateral surface of the turntable; two wire arranging mechanisms are symmetrically arranged on the surface of the turntable; a bobbin which can rotate on the surface of the turntable is further arranged thereon; the gears on the base can mesh with the two wire arranging mechanisms. The machine can realize mechanized tree wrapping without the need to dig up the tree, and has greatly improved efficiency compared with wrapping trees manually. The machine can realize adjustable closeness and tightness of tree wrapping without being affected by the diameters of the tree. The bobbin, which is easy to detach, can be replaced when the rope is used up. The machine can be combined with an elevation device and can overcome limiting factors such as fence, thus conveniently wrapping trees anytime anywhere.

The invention discloses a winding magnetic flux leakage and electrodynamic force calculation method based on transformer segmented models. The method comprises following steps: carrying out finite element magnetic field modeling and solution to a power transformer, calculating the leakage magnetic fields of the transformer by a vector magnetic potential edge finite element method, and calculating and analyzing the electrodynamic force borne by a winding through simulating internal magnetic field distribution of the transformer. According to the method of the invention, the influence of the operation state of the voltage adjusting winding on the leakage magnetic field distribution is considered fully; the leakage magnetic fields under three different operation conditions are respectively calculated and analyzed; the operation conditions comprise maximum shunting, rated shunting and minimum shunting; therefore, the condition that magnetic fields and stresses of the transformer winding change according to different connection methods of the voltage adjusting winding is simulated more accurately; the distribution rules of the leakage magnetic fields and the electrodynamic force are obtained; a basis is provided for judging the structure stability of the transformer winding; and the method is scientific, reasonable, real and effective and has high practical value.

The invention relates to a BOTDA system implement method based on a comb frequency spectrum continuous probe beam, which is characterized in that in the system, stimulated Brillouin scattering is generated by the comb frequency spectrum continuous probe beam as well as single frequency pumping pulse light with a wide narrow line; the comb frequency spectrum continuous probe beam is amplified by a stimulated Brillouin gain spectral line; an interval of an adopted comb frequency spectrum is larger than that of a required comb frequency spectrum with large frequency measurement precision; powers at the respective frequency positions are obtained through measurement via the powers of different frequencies in the comb frequency spectrum subjected to the stimulated Brillouin scattering; and finally, a complete Brillouin scattering spectrum is obtained in combination with a spectral line fitting algorithm to obtain temperature and strain at the space position. The BOTDA system has the beneficial effects that the dynamic property of the BOTDA system is improved, the spatial resolution is improved, the frequency spectrum scanning equipment of the system is simplified, the spectral line fitting speed is improved, the detect of restriction between a comb frequency spectrum interval and a pulse width is overcome, and the speed problem of a continuous frequency sweeping system is also solved.

The invention discloses a method for achieving an anti-snaking broadband energy absorption mechanism and an optimal configuration method for the parameters of a bogie. According to the method and the optimal configuration method, a dynamic design method is mainly applied, and lead-lag correction of unstable snaking oscillation phenomena of the bogie is achieved in a self-adaptive control manner; an anti-snaking redundant design form of an ICE3 prototype is borrowed, the anti-snaking broadband energy absorption mechanism is achieved through combination application of novel anti-snaking vibration reducers, and the method and the optimal configuration method are simple and applicable; and an anti-snaking soft constraint or anti-blocking technology is borrowed, the hydraulic rigidity is properly reduced, and rheology nonlinear influences are avoided. By means of the method and the optimal configuration method, the design defects of the ICE3 bogie prototype are overcome, a high-speed-rail passenger-dedicated development manner is gradually changed, and then the rate of return on investment is increased; in addition, the adaptability and the friendliness to track lines are improved, and the railway construction investment cost can be saved; and meanwhile the robustness of perturbation or disturbance of natural factors is improved, and particularly when the method and the optimal configuration method are used for mountain lines, and the structural technical service cost can be obviously reduced.

The invention discloses a novel thermogravimetric analysis device which includes a test sample heating system, a protective gas transporting system, a temperature collection and auto-control system, a weight collecting system, and a data processing and control system. The test sample heating system is connected to a sheet-like test sample through a heating element in a directly contacted manner; the temperature collection and auto-control system is connected to the test sample through a temperature sensor in the directly contacted manner; the weight collecting system is connected to a lever-type weight transfer apparatus through a weight testing apparatus. The thermogravimetric analysis device achieves multi-contact-point temperature measurement and data collection of relationship of temperature to mass at multi-temperature-increasing rate, allows the thermogravimetric process of a sample to be traced in the whole course, and satisfies practical scientific researching and production demand better.

The invention discloses an automatic loading and unloading compartment of a cable shaft disc of electric power equipment. A compartment bottom plate is internally provided with two second sliding grooves which are correspondingly communicated with a seventh groove; the seventh groove is internally provided with a shaft disc sliding positioning device; the compartment bottom plate is further internally provided with a first sliding groove which corresponds to the two second sliding grooves; the shaft disc sliding positioning device comprises two shaft disc fixed blocks which slide in the second sliding grooves respectively; the shaft disc sliding positioning device further comprises a sliding positioning block which slides in the sliding grooves; each of the two shaft disc fixed blocks is connected with a third rotary shaft; each shaft disc fixed block is provided with a first shaft disc groove corresponding to the cable shaft disc; a compartment connecting plate is further connected with the end part of the compartment bottom plate and the cable shaft disc can be further driven to slide through the shaft disc fixed blocks, so that the cable shaft disc can be conveniently loaded and unloaded; the trouble caused by the fact that the cable shaft disc is loaded and unloaded by utilizing a crane is avoided.

The invention relates to a transformer winding turn-to-turn short circuit vibration acceleration calculating method. The method is characterized by including steps of magnetic model adopting, circuitmodel adopting and winding vibration acceleration calculating. Practical condition limitations in short-circuit test and electrodynamic force measurement are overcome, electromagnetic characteristicsin operation of a transformer are fully considered in calculation, and transformer winding faults are accurately simulated by taking transformer head end and middle turn-to-turn short circuit faults as calculating objects. A field-circuit coupling model is adopted for effectively simulating an internal magnetic field environment in transformer winding turn-to-turn short circuit, correctness of thefield-circuit coupling model is verified by comparison of simulation results and experimental data, and accordingly the feasible method is provided for winding turn-to-turn short circuit fault identification. The method has advantages of scientificity, reasonability, realness, effectiveness, high practical value and the like.

The invention discloses a speed self-adaptive control method of a lower limb rehabilitation training system treadmill based on myoelectricity. The speed self-adaptive control method comprises the following steps: acquiring a myoelectric signal of a lower limb of a patient in real time by using a myoelectric signal acquirer; after pretreatment of filtration, noise reduction and the like, respectively extracting an amplitude characteristic and an energy characteristic of a related myoelectric signal, and predicting a step period and a step length of movement of the lower limb of the patient in real time by using a step period detection algorithm and a step length estimation algorithm; furthermore, calculating an expected speed of movement of the lower limb of the patient according to the data; meanwhile, acquiring a speed transmission function of the treadmill by using a system recognition method; and finally, with the combination of the speed transmission function of the treadmill, driving the control motor of the treadmill according to a PID speed servo control algorithm, thereby achieving self-adaptive following control on the speed of the treadmill. As the step speed of a human body is predicted according to the myoelectric signal, signals can be conveniently acquired and processed, a patient can control the speed of the treadmill to be coordinated with the speed of the patient in real time according to active movement attention of the patient, active rehabilitation training of the patient can be achieved, and the rehabilitation training velocity can be increased.

The invention discloses a ventilation tower crane. The ventilation tower crane comprises a horizontal support and a vertical support. A ventilation pipe is arranged in the horizontal support. Two endsof the ventilation pipe are respectively connected with two branch pipes. One end portion of each branch pipe is connected with an air suction cover. The ventilation pipe is provided with a connecting pipe upwards. The vertical support comprises an upper section support and a lower section support which are telescopically connected. The upper section support and the lower section support are of hollow structures. The bottom of the lower section support is connected with the horizontal support. A driving device used for driving the lower section support to move up and down is arranged on the upper section support. The ventilation tower crane can realize the function of ascending and descending. When the ventilation tower crane is not used, the lower section support and the horizontal support can be lifted integrally, thereby facilitating centralized management of water, electricity and gas in a laboratory.

A system for structuring credit support in connection with life insurance premium finance loans and securitizing longevity risk includes a trust having a life insurance policy and a premium finance loan from a lender that finances the cost of the premiums of the life insurance policy. The life insurance policy is used as collateral for the premium finance loan. The trust provides to the lender additional collateral in the form of a letter of credit or other forms of collateral to cover any shortfall between the balance and the policy cash surrender value. A longevity risk fund provides the credit support by entering into a collateral support agreement with the trust through a credit source. The longevity risk fund receives compensation in the form of risk adjusted return on exposure, in exchange for providing the additional collateral. The cash flows received from the credit support obligations are then securitized through the transfer of the related collateral support agreements (either by legal transfer or economic participation) to a special purpose vehicle that issues securities (either equity or debt) to the capital markets.

The invention discloses trichodermalongibrachiatum GF-10 and an application thereof. The morphological characteristics are as follows: the trichodermalongibrachiatum GF-10 grows rapidly on a PDA (Potato Dextrose Agar) and the back face grows yellow green from colorless; conidiums can be generated after the trichodermalongibrachiatum GF-10 is cultured at 28 DEG C for 72 hours; stem secondary branches of the conidiums are fewer and stretch out in a right angle generally; bottle stems directly stretch out from the secondary branches; solitary and dichotomy exist and whorls are very few; the bottle stems are in a calabash or flask type; the length is 5.3-11.6 microns and the width is 2.0-3.2 microns; the final bottle stem is conical; spores are grey green or green, and are oval or ellipse-shaped; and the length is 3.4-6.6 microns and the width is 2.3-3.5 microns. The trichodermalongibrachiatum GF-10 has strong tolerance on a bad environment, resists mutation, is easily cultured and stored, and has good effects on inhibiting phytophthora nicotiana and alternaria alternate.

A gore as a portion of a continuous elongated knitted fabric in a wale direction like a flared skirt is used. A knitted fabric formed by connecting a plurality of the gores in a course direction is designed. At the time of designing a pattern spread over a plurality of gores, the pattern is designed on the outer shape image as a composite image of the gores, and the design is divided into gores. At the time of assigning the pattern to the gores, it is checked whether any narrowing course is present in the pattern. If any narrowing course is present, on the upper side of the narrowing course, the left and right borders of the pattern are shifted toward the center of the knitted fabric, by the amount corresponding to the number of narrowing stitches from the center of the knitted fabric or the like.

The present invention relates to a concrete deck rock-fill dam bedding zone moving side wall reclamation construction technique in water utilization and water-power engineering. It is characterized by that said invention adopts reinforced concrete moving side wall to make slope protection in layers, rolling by layers, repeatedly using moving side wall, mechanical scaling, manual precise scaling, finishing slope and protecting slope by adopting mortar-rolling process.

The invention provides a simple, convenient and firm assembled limb protection fence which comprises a plurality of fence units. The fence units are sequentially connected end to end to form a protection space, each fence body comprises two uprights in vertical arrangement, two cross beams in horizontal arrangement are arranged between the uprights, a plurality of reinforcing columns in vertical arrangement are arranged on each cross beam, at least one child button is arranged on one upright, at least one mother button corresponding to the child button is arranged on the other upright, and thechild buttons and the mother buttons of each two adjacent fence units are fixed through fastening members. Through the fence, the technical problem that conventional fences cannot avoid can be solvedeffectively, the problems that on-site safety protection has a vacuum period and safety work has dead angles are solved realistically, mounting conditions and mounting ideas of the conventional fences are fundamentally overturned and changed, and safety of on-site building construction on a regular basis is ensured powerfully.

The unattended shopping method of the invention belongs to the technical field of intelligent identification. The unattended shopping includes an entrance area, a display area, a settlement area, an exit area and a stock area, and has an unmanned collection system, an unmanned settlement system, an unmanned replenishment system, and an unmanned identification system. The entrance area has a passage. Both ends of the passage are provided with doors. The passage entrance is the first door and the passage exit is the second door. The passage is provided therein with a face recognition camera andan entrance area RFID tag reading and writing device. The display area is provided with at least one shelf. At least one tray is arranged on the shelf. At least one product is arranged on the tray. Each product is provided with an independent RFID tag. The shelf is provided with a product sensor. By using the convenient unattended shopping method, people can conveniently purchase products and a shopkeeper can achieve low investment, is just required to provide a site and not required to employ workers so as to save a lot of expenditure.