3092results about How to "Avoid secondary damage" patented technology

A liquid crystal display comprises a liquid crystal panel (22), a group of optical sheets (32) disposed rearward from the liquid crystal panel (22), a light source (28) disposed rearward from the group of the optical sheets (32), a frame-shaped front frame (21, 23) disposed forward from at least the group of the optical sheets (32), a back chassis (31) disposed rearward from the light source (28) and fixedly connected to the front frame (21, 23) directly or indirectly, and a holding member (27) integrally holding the group of the optical sheets (32) to keep the group of the optical sheets (32) held in position integrally, when the back chassis (31) and the front frame (21, 23) are unfixed from each other.

Provided are a fall accident detection apparatus and method capable of detecting frequent falling accidents in daily lives of old, feeble or invalid pedestrians in real time and notifying a fall control server of the falling accidents in order to actively prepare for possible secondary accidents by falls. The fall accident detection apparatus includes an acceleration sensor detecting information on acceleration and slope; a controller judging behaviors using the information on acceleration and slope detected by the acceleration sensor and determining a fall accident by analyzing a sequential pattern of the judged behaviors; and a communication unit transmitting information on a fall accident when the fall accident is determined by the controller.

The invention relates to a total-section closed type deep-shallow coupling yielding, bolting-grouting and supporting method for an incompact and fractured soft-rock roadway. On the basis of a multilayered cooperative supporting principle, a spraying net combined isolating arch, an anchor rod extruding reinforcing arch, a total-section closed type grouting reinforcing ring and a deep slurry diffusion reinforcing arch are respectively formed on surrounding rock of the roadway from shallow to deep finally, and are combined to form a multilayered effective combined arch by a suspension effect of a high-strength grouting anchor cable, advantages of yielding supporting, bolting-grouting supporting and deep-shallow coupling supporting are combined organically, bearing range, integrity and bearing capability of a supporting structure are improved obviously, a control effect on deformation characteristics of large deformation, high speed, long duration, wide destroying range, peripheral pressing, obvious floor heaves and the like of the surrounding rock of the incompact and fractured soft-rock roadway is excellent, and various deformations of the surrounding rock of the incompact and fractured soft-rock roadway are controlled effectively. The total-section closed type deep-shallow coupling yielding, bolting-grouting and supporting method is particularly suitable for a large-section incompact and fractured soft-rock roadway of a deep well, is simple in work procedures and low in cost, and has high field promotion and application value; and parallel operation can be realized.

The invention relates to a full-automatic loading-unloading and visual inspection device. The device comprises a combined assembly line, a first image collecting device, a first product conveying device, an overturning device, a second image collecting device, a second product conveying device, an industrial computer, an electric appliance control cabinet, a loading device and an unloading device. The full-automatic loading-unloading and visual inspection device has the beneficial effects that a manual loading-unloading manner is changed into an automatic loading-unloading manner, so that the labor intensity of workers is reduced, and the device is high in efficiency and practical and can be applied to long-term scale production; besides, a manual detection manner is changed into an online automatic detection manner, so that the quality of products with front and back surfaces can be accurately detected, the economic loss of a user caused by manual erroneous judgment can be reduced, the detection efficiency is high, and the detection is accurate and reliable, the online automatic detection is realized, and the 24-hour ceaseless working can be realized; and data can be stored in real time, and the user can analyze the product process according to the detection data, so that the economic benefit of a factory is increased.

Provided are a stroke patient rehabilitation training system and method based on brain myoelectricity and a virtual scene. Control over the virtual rehabilitation scene is achieved through myoelectric signals, and rehabilitation training intensity is adjusted in a self-adaptation mode with a brain myoelectricity fatigue index combined. The design of the virtual rehabilitation scene is completed with the needs of stroke patient rehabilitation training and the advice of a rehabilitation physician combined, the brain fatigue index is provided, and quantitative evaluation on brain region fatigue is achieved. The surface myoelectric signal features under different motion modes of an arm are extracted, the motion intention of a patient is obtained, and control over the virtual rehabilitation scene is achieved. The muscle fatigue and brain fatigue index comprehensive features are extracted, the fatigue state of a rehabilitation patient is obtained, self-adaptation rehabilitation training scene adjusting is achieved, rehabilitation training intensity is relieved or enhanced, and secondary damage caused by improper training is avoided. The system and method have the advantages of being high in safety, high in intelligence and scientific in training, and damage cannot happen easily.

The present invention discloses a double-output shaft active passive upper and lower limbs rehabilitation training mechanism, including a DC machine and a rack, and the DC machine is disposed on the rack, output shaft of the DC machine is provided with a force sensor with one terminal connecting with output shaft of the DC machine, another terminal of the force sensor is connected with a second shaft, the second shaft is disposed with a upper limbs rehabilitation training mechanism and a first bevel gear that meshing with a second bevel gear, a second straight gear meshing with a first straight gear is disposed on a first shaft connected with the second bevel gear, a lower limbs rehabilitation training mechanical arm is disposed on a third shaft connected with the first straight gear, output shaft of the DC machine is provided with a third straight gear meshing with a fourth straight gear, the fourth straight gear is provided with magneto-rheological damper.

The invention discloses an on-line lithium battery pole piece surface defect detection sorting system and method. The synchronous real-time on-line detection on positive and reverse sides of pole pieces is realized through a pole piece conveying device, a pole piece identification and detection part, a pole piece master control unit, a pole piece sorting device and a human machine interface part; a mechanical structure of the system is simple, the detection on the positive and reverse sides of the pole pieces can be realized in the system through a simple detection channel, and the system is simple, feasible and low in cost. The detection speed is high, the general detection speed is superior to 2 pieces per second, the detection precision is high, and an embedded visual identification detection technology adopted by the system has the high precision with the omission ratio of 0 and the error detection rate of less than 2 percent. According to the pole piece detection sorting device, the secondary damage of the pole pieces is avoided. The actionability is high, and the system is long in operating time, can operate for long time in the industrial field and has the advantages of convenience in maintenance, high portability and the like.

The present invention relates to a method and a device for detecting damages in an optical fibre (1,2) made for transmitting high optical power, specifically power exceeding 1 kW, and where the optical fibre (1,2) has an entrance end (7) for incident optical radiation (4) and an exit end where the optical radiation is leaving the fibre. According to the invention substantially radially spread radiation in connection with the entrance and / or exit parts of the fibre is detected, and if this radiation exceeds a certain level this is used as an indication of a damage in the entrance and / or exit zone of the fibre.

The invention relates to a thiol-aldehyde group cross-linked hydrogel material, a preparation method and applications thereof. The preparation method comprises: dissolving a component A thiol-containing polymer derivative in a biocompatible medium to obtain a solution A; dissolving a component B aldehyde group-containing polymer derivative in a biocompatible medium to obtain a solution B; and mixing with the solution A and the solution B to obtain the hydrogel, wherein the hydrogel has plasticity at the initial stage of cross-linking, can form a removable hydrogel system at the later stage ofcross-linking, and can form an interpenetrating network hydrogel system with enhanced mechanical property, a component C and / or a component D can be added to the hydrogel precursor solution, the component C is a double bond-containing substance or an amino-containing substance or a substance containing a double bond and amino, and the component D is a tissue repairing beneficial ingredient. The invention further provides a kit for preparing the hydrogel, applications of the hydrogel in tissue engineering and regenerative medicine, 3D cell culture, 3D printing, and applications of the hydrogelas cell carriers, protein carriers or drug carriers.

The invention relates to an orthopedics-department operating system and a control method thereof. The orthopedics-department operating system comprises medical imaging equipment, a surgery robot workstation and a display device and is characterized in that the medical imaging equipment collects the in-vivo three-dimensional image data and the real-time in-vivo two-dimensional image data of the bone fracture area of a patient; the workstation fuses the in-vivo three-dimensional image data and the real-time in-vivo two-dimensional image data and generates a navigation image, and the display device displays the navigation image. The orthopedics-department operating system and the control method thereof have the advantages that real-time 3D image navigation is provided for a doctor, and the doctor does not need to reconstruct the 3D model of the bone fracture area of the patient by the aid of experience.

The invention discloses a device for breaking walnut shells and taking walnut kernels, having functions of self-positioning, pre-breaking shells, equidirectional spiral self-grading and flexible extrusion. The device comprises an intermittent feeding device, the a shell pre-breaking device, a flexible shell breaking device and a separating device, which are fixed on a machine frame, wherein the intermittent feeding device is used for performing intermittent batch feeding for the shell pre-breaking device; the shell pre-breaking device comprises an extruding part and a blanking part which are mutually matched; the extruding part is in reciprocating movement, and is matched with the blanking part for extruding walnuts, so that cracks are generated in the walnuts; the blanking part is in reciprocating movement, so that the extruded walnuts fall off to the flexible shell breaking device; the flexible shell breaking device is used for breaking walnut shells; and shells and kernels of the walnuts after shell breaking are separated for storage through the separating device. The device disclosed by the invention integrates a plurality of systems, and is compact in structure, the manufacturing cost of a machine is reduced, the occupied space for the operation of the machine is also reduced, and the miniaturization and the high efficiency of the machine are facilitated; in structure design, multiple connections including splicing, combining and the like for cooperating work can be realized; and the requirements of various production scales and the requirements of various production sites can be met, and the device is also suitable for families, and is widely applied.

The invention belongs to the field of biofermentation engineering. A pharmaceutical medium and a fungal strain which have blood sugar lowering efficacy are used as bidirectional fermentation raw materials, wherein the pharmaceutical medium is mainly composed of the following raw materials: cornel, gynostemma, momordica grosvenori, winged euony twigs, balsam pear and polyrhachis vicina; the fungalstrain is composed of the following strains: inonotus obliquus, cordyceps, phellinus igniarius, polystictus versicolor, and grifola frondosa; and bi-directional multi-fungi fermentation is carried out between multiple edible and pharmaceutical fungi and Chinese herbal medicines by a bidirectional fermentation process, thus organisms in two kingdoms or three kingdoms are organically combined to obtain an entirely new blood-sugar-lowering pharmaceutical mycoplasm product. The obtained product can generate 1+1>2 physiological function efficiency for hypoimmunity, has the actions of obviously lowering blood sugar but not increasing insulin concentration, has significant positive effects on helping treating and controlling diabetic complications, and can be used as an oral medicament for preventing and treating diabetes or a health-care product for adjusting blood sugar.

The invention discloses an unmanned aerial vehicle trapping interception system based on electromagnetic interference and a trapping interception method thereof. The trapping interception system comprises a control host, a target searching tracking device and a trapping jammer. The target searching tracking device is used for detecting position information of a suspicious target in a protection airspace and video information and sending to the control host. The control host is used for determining whether the suspicious target is an unmanned aerial vehicle target according to the video information. If the suspicious target is the unmanned aerial vehicle target, according to the position information of the unmanned aerial vehicle target, the trapping jammer is controlled to emit an electromagnetic interference signal to the unmanned aerial vehicle target so as to realize trapping interception to the unmanned aerial vehicle target. In the invention, through using the electromagnetic interference signal, the trapping interception to the unmanned aerial vehicle is realized and soft killing trapping interception of the unmanned aerial vehicle is realized too. New defense means are provided for relieving a security threat caused by a low, slow and small unmanned aerial vehicle. And a secondary damage caused through using a traditional interception net, a laser and other hard killing interception modes is avoided.

The invention discloses a patient caring bed with a turnover assisting function and a turnover assisting method thereof and belongs to the field of caring beds. The patient caring bed comprises a bed body frame, a bed plate, an ejection mechanism and a cloth winding mechanism, wherein the cloth winding mechanism comprises cloth winding rolls, a driving device and turnover cloth; the cloth winding rolls are arranged at the two sides of the caring bed; the driving device is used for driving the cloth winding rolls to rotate; the two ends of the turnover cloth are respectively and fixedly wound on the cloth winding rolls at the two sides; the turnover cloth between the two cloth winding rolls are laid on the bed plate; the ejection mechanism comprises two ejecting rolls positioned under the turnover cloth, an ejecting bracket for installing the ejecting rolls, an electric pushing rod arranged under the ejecting bracket and a guiding device. The invention also discloses the turnover assisting method of the patient caring bed. The patient caring bed and the turnover assisting method disclosed by the invention have the advantages that the inclination of the body of a patient is realized by utilizing the ejection mechanism and the cloth winding mechanism to assist serving staffs to turn over the patient, the turnover action is gentle, the comfort level of the patient is high, and the working intensity of the serving staffs is greatly reduced.

The invention discloses a flexible active and passive knee-joint rehabilitation training device, comprising a linear drive unit, a leg bracket unit and a control unit, wherein, the linear drive unit comprises a baseboard, a rodless cylinder, a sliding table for the rodless cylinder, an inflatable extendible flexible driver, a guide rod, a spring, a fixed support, a connecting piece, a removable bracket and a sliding pair; the leg bracket unit comprises a thigh rod, a thigh supporting board, a shank rod, a shank supporting board, a feet bracket, a connecting rod, a T-type connecting piece, a L-type rod, a first regulating device and a second regulating device; and the control unit comprises an angular displacement sensor, a force sensor, a displacement sensor and a controller. The training device can conveniently achieve a plurality of rehabilitation training modes such as knee-joint passive training, active training and the like according to the rehabilitation degree of a patient, and an applying force (including a driving force in the passive training and a damping force in the active training) is regulated in a stepless manner.

The invention provides a total knee arthroplasty robot auxiliary system, a control method, electronic equipment, and a computer-readable medium. The auxiliary system comprises a pre-operative planningsystem, an intraoperative planning system and an execution system, wherein the pre-operative planning system is used for formulating pre-operative planning, wherein the pre-operative planning data comprises a knee image; the intraoperative planning system is used for formulating intraoperative planning, wherein the knee image in the pre-operative plan and a knee surface profile determined in theoperation of a patient are subjected to image registration; knee dynamic spacing force line data at a continuous flexion angle is acquired; visual displaying of a dynamic spacing force line data graphis performed; prosthesis planning is adjusted according to the visual display of the dynamic spacing force line data graph to obtain intraoperative planning; and the execution system is used for guiding an osteotomy guide mounted at the operating end of a mechanical arm of the surgical robot to be located in a predetermined position in the planning, wherein the osteotomy guide is used for positioning an osteotomy saw.

The invention discloses a slave-type lower limb gait training rehabilitation robot system which is divided into a lower limb wearable exoskeleton robot and a slave robot. The slave-type lower limb gait training rehabilitation robot system comprises two translational degrees of freedom, two vertical weight loss degrees of freedom of the slave robot and six rotational degrees of freedom of two legs,hip and knee of the wearable robot. The lower limb wearable exoskeleton robot is fixed on lower limbs and waist of a patient and provides walking assistance according to the gait of the patient and helps the patient to complete the walking action; and the slave robot is connected with the lower limb wearable exoskeleton robot to play a role in supporting the patient and reducing the weight, so that the corresponding following movement can be realized according to the walking of the patient. The slave-type lower limb gait training rehabilitation robot system is mainly used for solving variouslower limb movement dysfunctions caused by the central nerve injury, provides the safe, long-acting and large-range gait training for the patient and can improve the lower limb rehabilitation trainingefficiency of the patient.

The invention provides an intelligent integrated machine for intactly picking and grading table grapes and a control method thereof. The intelligent integrated machine comprises a three-dimensional motion platform, a picking point positioning system, a picking system and a grading and subpackaging system. The three-dimensional motion platform comprises a walking motor controller, a position sensor and the like; the picking point positioning system is composed of a grading image detecting camera, system software and a data transmission module; the picking system is a top end structure of the three-dimensional motion platform and is composed of an infrared geminate transistor set, a picking cutter, a net bag and a rotary buffering plate; the grading and subpackaging system is composed of a conveying belt front lifting device, a conveying crawler belt, a conveying belt driving motor, a grading image detection camera and a controllable rotary box. The grape pickup integrated machine improves grape pickup efficiency and grading accuracy, reduces secondary damage to the grapes, ensures freshness and has wide market popularization prospects.

Plastic fiber cultivating soil is prepared from 15-35% of foundation soil, 5-35% of plant fiber powder, 10-50% of perlite, 5-15% of peat soil and 5-15% of dual-component hot-melt adhesion composite fibers. The composite fibers are formed by compositing two thermoplastic polymers through composite spinning according to a sheath-core type structural mode. The difference of melting points of the adopted two thermoplastic polymers is not lower than 30 DEG C. The composite fibers are composed of dual-component hot-melt adhesion composite fibers A with the particle size being 15-25 mm and dual-component hot-melt adhesion composite fibers B with the particle size being 3-8 mm. The composite fibers A and the composite fibers B can be made of same materials or different materials. The particle size of the plant fiber powder is 0.2-0.9 mm. The plastic fiber cultivating soil has the advantages that the cultivating soil can be cured and formed and is long in service life, not prone to weathering, low in weight, high in moisture-preserving performance and breathability, capable of being recycled after being discarded and the like. The plastic fiber cultivating soil has the main effects that the problems that in the vertical greening construction process, plants cannot be easily attached to walls, planting soil is large in gravity, and the soil is not easily shaped and is prone to dispersion are solved, and the problem that large-scale mechanical seedling inserting is difficult in upland soil planting. Due to the fact that most raw materials come from agricultural and forestry waste, a contribution can be made to agriculture and environmental protection, and the fiber soil can be recycled or directly used as combustion improver after being used.

The invention relates to a photocrosslinking double-modified silk fibroin-gelatin composite bio-ink as well as a preparation method and application thereof. The photocrosslinking double-modified silkfibroin-gelatin composite bio-ink is prepared by respectively modifying silk fibroin and gelatin by methacrylation and performing photocrosslinking. The photocrosslinking double-modified silk fibroin-gelatin composite bio-ink is good in biocompatibility; the cross-linking of the bio-ink can be enhanced by a two-component modification method, and the bio-ink has temperature sensitivity and shear thinning, and can be used as 3D printing bio-ink to construct a personalized macroporous support to meet various needs.

A liquid crystal display comprises a liquid crystal panel (22), a group of optical sheets (32) disposed rearward from the liquid crystal panel (22), a light source (28) disposed rearward from the group of the optical sheets (32), a frame-shaped front frame (21, 23) disposed forward from at least the group of the optical sheets (32), a back chassis (31) disposed rearward from the light source (28) and fixedly connected to the front frame (21, 23) directly or indirectly, and a holding member (27) integrally holding the group of the optical sheets (32) to keep the group of the optical sheets (32) held in position integrally, when the back chassis (31) and the front frame (21, 23) are unfixed from each other.

The invention discloses a getting-on stretcher for an ambulance in the field of medical emergency equipment. The stretcher comprises a stretcher body. The stretcher body is provided with a carrying platform frame for carrying a patient. Front supporting legs and rear supporting legs are arranged at the bottom of the frame body. Wheels are arranged at the bottoms of the front supporting legs and the rear supporting legs. The upper ends of the front supporting legs and the upper ends of the rear supporting legs are hinged to the bottom of the frame body. The front supporting legs and the rear supporting legs swing front and back through a movement assembly. The movement assembly comprises a guide rail arranged in the frame body, a first sliding block and a second sliding block capable of sliding front and back are arranged on the lower side of the guide rail and hinged to one end of a first inclined rod and a second inclined rod, and the other end of the first inclined rod and the other end of the second inclined rod are hinged to the front supporting legs and the rear supporting legs. A first limiting mechanism and a second limiting mechanism used for locking the first sliding block and the second sliding block are arranged on the frame body. The getting-on stretcher has the advantages that operation is convenient, the height can be adjusted, and ambulance getting on and off impact is small.

The invention discloses a medical transfer sickbed. The medical transfer sickbed comprises a bed body and a transfer frame, wherein the bed body comprises a bed frame, a bed board and a lifting device I, and the bed frame comprises a bed head board, a bed tail board, a supporting plate, supporting legs I, a folding guardrail I and a bottom plate; the lifting device I is arranged on one side of the upper part of the bottom plate, the lifting device I comprises a hydraulic cylinder I, a pressure relief pedal I and a pressing pedal I; the transfer frame comprises a bracket, a lifting device II and rolling wheels II, the bracket comprises a U-shaped frame, a handle, supporting legs II, a bearing frame and a folding guardrail II, and a lifting device II comprises a hydraulic cylinder II, a piston rod II, a pressure relief pedal II, a pressing pedal II and an oil tank II. For the medical transfer sickbed, the lifting devices are arranged on the bed body and the transfer frame, when the bed board is fixed to the bed body or the transfer frame, a patient can be rapidly transferred through the lifting devices, the whole process can be completed only by one nursing person through operating the lifting devices, thus the investment of nursing cost is reduced, the labor intensity of the nursing person is alleviated, and meanwhile, secondary injuries caused when the patient is transferred are avoided.

The invention discloses an intelligent video monitoring method based on escalator safety. Compared with the prior art, the method has the following beneficial effects: a video camera shooting instrument is arranged in an escalator access port for obtaining passenger video image information and transmitting to an intelligent video monitoring instrument SEM; the SEM analyzes and processes the video image information, automatically detects and identifies passenger facial features or behavior features under the passenger non-matching condition to judge the ages and the sexes of passengers, and sends an escalator speed adjusting instruction to an escalator controller according to the judged ages of the passengers, so that the fall and secondary injury of old people and babies in the escalator access port are prevented; in addition, if the passengers in the escalator access port fall, the camera shooting instrument BOI transmits images to the intelligent video monitoring instrument all the time; and the intelligent video monitoring instrument judges fall of the passengers, judges abnormal conditions of the people, and controls deceleration or stop of an escalator to prevent accidents or secondary injury.

The invention provides a self-plugging releasing temperature resistant temporary plugging agent used for water-based drilling fluid, the self-plugging releasing temperature resistant temporary plugging agent comprises nano calcium carbonate and a product which is obtained by reacting starch, alkali metal hydroxide, halogenated organic acid, carbonate, a hydrophobic modification agent and alcohol with water. The invention also provides a preparation method of the self-plugging releasing temperature resistant temporary plugging agent used for the water-based drilling fluid, and the self-plugging releasing temperature resistant temporary plugging agent used for the water-based drilling fluid can be obtained by proportionally adding components into a kneading machine for kneading. The self-plugging releasing temperature resistant temporary plugging agent has strong high temperature resistance, and can resist the temperature up to 140 DEG C; and the self-plugging releasing temperature resistant temporary plugging agent has good temporary plugging effect and significant reservoir protection effect, and the water-based drilling fluid added with the temporary plugging agent has high temporary plugging rate and oil phase permeability recovery rate; at the same time, the temporary plugging agent has self-plugging releasing ability. During the late flowback, the self-plugging releasing can be realized by formation of a hydrophobic channel without acid washing for mud cake removal and other processes, and secondary damage to a reservoir can be avoided.

The invention discloses a mechanical patient transferring trolley and belongs to the field of special patient transportation tools. The mechanical patient transferring trolley comprises an upper trolley frame, a middle trolley frame, a lower trolley frame, a lifting device arranged between the lower trolley frame and the middle trolley frame, an overturning device arranged between the middle trolley frame and the upper trolley frame, a horizontal moving device arranged on the upper trolley frame and multiple sliding carrying plates which are mutually isolated. A scissor jack is used for ascending and descending the upper trolley frame and the middle trolley frame. A screw nut pair is used for overturning the upper trolley frame. A horizontal guide rail and a rolling bearing are used for horizontally moving the sliding carrying plates which are used for flexibly transferring a patient. The mechanical patient transferring trolley is flexible and convenient to operate, small in number of nursing personnel, needless of greatly moving the patient and capable of avoiding secondary injury in the patient transferring process and has the advantages of being simple in structure, low in cost, convenient to maintain, stable in operation and low in noise.

The invention discloses a personalized upper limb rehabilitation training robot. The personalized upper limb rehabilitation training robot comprises a base support module, a multi-body-position seat module detachably arranged on the base support module, a shoulder joint adaptive movement module arranged on the base support module and seven-degree-of-freedom upper limb rehabilitation training mechanical arms arranged on the shoulder joint adaptive movement module, and each seven-degree-of-freedom upper limb rehabilitation training mechanical arm comprises a wrist joint movement module, an elbowjoint movement module connected in series with the wrist joint movement module through a forearm dimension adjusting module, and a shoulder joint movement module connected in series with the other end of the elbow joint movement module through an upper arm dimension adjusting module. According to the personalized upper limb rehabilitation training robot, upper limb rehabilitation training of patients in different rehabilitation stages, with different symptoms and of different body types can be realized, and the personalized upper limb rehabilitation training robot is applicable to the patients with upper limb disorder or functional limitation caused by central nerve, peripheral nerve, spinal cord, muscle or bone diseases.

The invention discloses a method for diagnosing the bridge arm IGBT open-circuit fault of an energy storage converter exteriorly. The method comprises the following steps: detecting a three-phase current on the alternating current side of the energy storage converter through a current transformer; calculating the fundamental component, the second harmonic component and the direct current component of the three-phase current through Fourier transform; respectively calculating the second harmonic contents of the three-phase current; when the second harmonic content of any phase in the three-phase current exceeds a preset threshold value, judging that an open-circuit fault occurs in an IGBT of the phase; when the open-circuit fault occurs in the IGBT of any phase in the three-phase current, if the direct current component of the phase is larger than zero, judging that the open-circuit fault occurs in an upper bridge arm IGBT of the phase; if the direct current component of the phase is smaller than zero, judging that the open-circuit fault occurs in a lower bridge arm IGBT of the phase. Based on the second harmonic detection of alternating current and the direct current component detection, the method can accurately and effectively diagnose the bridge arm IGBT open-circuit fault of the energy storage converter, and thus guaranteeing safe and stable operation of an energy storage system.

The invention discloses a finger movement function rehabilitation training device which comprises a supporting seat and a finger training mechanism arranged on the supporting seat. The finger training mechanism consists of a finger motion mechanism and a hybrid driving and sensing mechanism, wherein the finger motion mechanism comprises a driving rod, a driving connection rod, a front-rear-end connecting rod, a front-end connecting rod, a front-end finger sleeve, a rear-end finger sleeve and a fixing seat. One end of the driving rod is fixedly connected with a driving shaft, the fixing seat is fixe to the supporting seat, one end of the front-rear-end connecting rod is rotatably connected to the fixing seat, the other end of the front-rear-end connecting rod is rotatably connected with the front-end connecting rod, one end of the driving connection rod is rotatably connected to the middle of the front-rear-end connecting rod, and the other end of the driving connection rod is rotatably connected with the other end of the driving rod. The finger motion mechanism can accurately control movements of all joints of fingers, enables a hemiplegic patient to perform training in a correct finger movement mode and facilitates rehabilitation of normal movement functions of the fingers of the patient.