109results about How to "Consider practicality" patented technology

The invention relates to a Fourier contour syntax guided remote sensing target detection method, equipment and a medium, belongs to the technical field of remote sensing image target detection, and can effectively detect obviously symmetrical targets such as airplanes or ships in a remote sensing scene lacking contour / target mask labels. According to the invention, in a small sample scene, detection of a target category and positioning of a target can be realized, and a closed contour of the target can also be output. Fourier low-frequency spectrum is used to realize contour coding, and only 128-dimensional descriptors are used to replace traditional discrete contour point prediction. Through a triple Fourier guidance mechanism formed by cyclic alignment loss, low-frequency amplitude regularization and symmetric constraint, the noise interference of a weak supervision false contour is effectively relieved, the model is forced to preferentially learn the global shape and symmetric structure of a target, and the adaptability to scale change, any rotation angle and complex background interference is remarkably improved. And meanwhile, the detection accuracy in a small sample scene is improved, and practical value and theoretical value are both considered.

This invention discloses a method for diagnosing sewage leaks in drainage pipes based on the introduction of clean water, specifically relating to the field of municipal engineering. The method includes: collecting water samples from adjacent manholes at both ends of the pipe to be inspected on a sunny day; pre-treating the samples and then performing fluorescence detection to obtain an initial fluorescence value F; introducing clean water at a known flow rate q0 into the downstream manhole's inlet pipe; after the clean water and sewage are fully mixed, collecting a water sample from the downstream manhole; pre-treating the sample and then performing fluorescence detection to obtain a fluorescence value F' from the downstream manhole; and introducing clean water at a known flow rate into the upstream manhole's inlet pipe; after the clean water and sewage are fully mixed, collecting a water sample from the upstream manhole; pre-treating the sample and then performing fluorescence detection to obtain a fluorescence value F'' from the downstream manhole. By introducing clean water into the upstream and downstream manholes and combining it with the fluorescence conservation principle, the leakage amount and uncertainty are calculated, thus solving the problems of high cost of video detection, low accuracy of flow monitoring, and difficulty in tracing the source of low-pollution water.

This utility model relates to a simple adhesive application device suitable for dispensing machines, comprising a housing with a cleaning port at the top and a partition installed inside the housing. Below the cleaning port, the partition has a contact adjustment block with several adjustment holes, connected to the partition via adjustment screws. The partition divides the housing into a storage space and a control space. On one side of the storage space, a feeding mechanism and a winding mechanism are installed, each connected to an adhesive strip. On the other side of the control space, a feeding drive and a winding drive are installed. Thus, the device, through its adjustable contact adjustment block, can accommodate the end-face cleaning of flat nozzle dispensing heads and the wrap-around cleaning of immersion needle dispensing heads, meeting the cleaning needs of different types of dispensing heads.

The utility model discloses a mounting structure of a helicopter rotor shaft dynamic sealing ring dismounting tool, which comprises a base, a dismounting head is arranged at the top of the base, the dismounting head comprises a push-and-pull disc, vertical rods are fixedly connected to the top of the push-and-pull disc in an annular array, a top disc is fixedly connected to the tops of the vertical rods, and the top disc is fixedly connected to the top of the push-and-pull disc. Hinge grooves penetrating to the bottom are formed in the top of the top disc in an annular array mode, hydraulic push rod sleeve connecting rods are fixedly connected to the bottoms of the inner sides of the multiple vertical rods, hydraulic push rod sleeves are fixedly connected to the inner sides of the multiple hydraulic push rod sleeve connecting rods, and second hydraulic push rods are fixedly connected to the inner walls of the hydraulic push rod sleeves. Through the arrangement of the dismounting head, the dismounting process of the sealing ring and the rotor shaft is simplified through the design of the dismounting tool, the dismounting efficiency and safety are remarkably improved, through accurate control of a hydraulic system, it is ensured that dismounting force is evenly applied, and the problem that the sealing ring is damaged or is not thoroughly dismounted due to the fact that the force is too large or too small is solved.

This utility model discloses a light-powered hair styling device. The device includes a main unit, a curling tube, a light-emitting lamp, and a PCBA control board. The curling tube is connected to the main unit, and the light-emitting lamp is located inside the curling tube. The light-emitting lamp is connected to the PCBA control board via a conductive wire, and an isolation bracket is provided between the light-emitting lamp and the conductive wire. By adding an isolation bracket between the light-emitting lamp and the conductive wire, this utility model utilizes the physical barrier effect of the isolation bracket to block the direct transmission of infrared rays emitted by the light-emitting lamp to the high-temperature radiation conductive wire. The isolation bracket forms a "radiation barrier," preventing high temperature and infrared rays from directly acting on the outer sheath of the conductive wire, delaying the aging, softening, and burning of the outer sheath, effectively avoiding safety accidents such as short circuits and electric shocks, and improving the long-term reliability of the light-powered hair styling device.

The utility model belongs to the technical field of roadway dust removal, and relates to an air flow purification device of a fully-mechanized face air return crossheading, which comprises a frame type component, a lifting component, a lower rotating component, an upper rotating component and a spraying component, the frame type component is used for allowing an operation vehicle to pass through, and the lifting components are arranged on the two sides of the frame type component and used for achieving lifting of an upper structure in the frame type component; a spraying component is arranged in the middle of the upper structure of the frame type component and used for treating dust in an area where a vehicle passes through. The rotating lower part is hinged with one side of the lower structure of the frame type part, and the spraying part is arranged at the upper part of the rotating lower part; the rotating upper part is hinged to the side, close to the rotating lower part, of the upper structure in the frame type part, and a dust catching net is arranged between the rotating upper part and the frame type part. Sufficient passing space is provided for vehicles, obstruction of a traditional dust catching net to traffic is avoided, different roadway heights and environment conditions can be flexibly adapted, and the stability of the treatment effect is ensured.

This utility model relates to the field of photovoltaic power station cleaning technology, and in particular to a cleaning and maintenance vehicle for photovoltaic power station construction. It solves the problem that existing technologies generate a large amount of waste and dust during photovoltaic power station construction, as well as water stains, all of which require timely cleaning. However, manual cleaning is currently time-consuming and labor-intensive. The photovoltaic power station construction cleaning and maintenance vehicle includes a mobile frame, characterized in that a support plate is fixedly installed on the top of the mobile frame. This utility model, through the combined design of lateral and longitudinal cleaning components, utilizes the meshing transmission of a first bevel gear and a second bevel gear to achieve synchronous linkage between the lateral and longitudinal cleaning brushes. This allows for cross-cleaning of waste, dust, and water stains in the photovoltaic power station construction area from different directions, significantly improving cleaning coverage and cleaning effect, and solving the problem of incomplete cleaning in traditional single-direction methods.

This utility model relates to the field of heating spoon technology, and in particular discloses a heating spoon, including a spoon body assembly and a handle assembly used in conjunction with the spoon body assembly. The spoon body assembly includes a spoon head with a blind groove for holding material and a heating element for heating the spoon head. The blind groove for holding material has an inner groove concave surface for contacting the target object to be heated. The handle assembly has a spoon handle with a hollow cavity structure, and a control module electrically connected to the heating element is integrated within the hollow cavity structure. This heating spoon achieves reasonable division of core functions. The spoon body assembly focuses on material holding and heating, while the handle assembly integrates control functions, avoiding component interference and facilitating use. The inner groove concave surface of the blind groove for holding material makes close contact with the target object to be heated, improving the heat transfer efficiency of the heating element. The hollow cavity spoon handle can protect the control module and also reduce heat conduction, preventing burns to the hands, thus combining practicality and safety.

This utility model discloses an anti-slip shoe sole, belonging to the field of shoe sole technology. It includes a shoe sole body, an anti-slip support ring structure surrounded by anti-slip ridges from the outside in, and an anti-slip support piece. The bottom surface of the shoe sole body is integrally molded with anti-slip ridges and an anti-slip support ring structure. An anti-slip support piece is embedded at the foot and heel positions on the bottom of the shoe sole body, respectively, serving as a first anti-slip structure and a second anti-slip structure. The anti-slip support piece III is integrally molded from a support piece body and anti-slip ridge components, with several anti-slip ridge components distributed on the support piece body, forming a non-closed flower-patterned anti-slip structure to facilitate the drainage of water from the grooves of the shoe sole, solving the problem of water not easily draining from deep groove shoe soles. The superposition of the anti-slip structure and the anti-slip ridges provides more sufficient wear material allowance and increases the friction of the contact surface, reducing slippage and improving the anti-slip effect.

This invention discloses a health insole containing Atractylodes lancea and its manufacturing process, comprising a breathable surface layer, an Atractylodes lancea functional layer, and an elastic base layer arranged sequentially from top to bottom. The Atractylodes lancea functional layer contains microcapsules containing active ingredients, enabling the slow release of these active ingredients and their efficacy. The Atractylodes lancea functional layer employs a "locally thickened Atractylodes lancea functional layer" design in key areas such as the sole and heel of the insole to enhance the herbal care effect. The breathable surface layer has ventilation channels to achieve "strong antibacterial effect during use and energy-saving and efficacy-preserving effect when idle." This application solves the problems of easy attenuation of the efficacy of traditional Chinese medicine in existing insoles, rapid release of medicinal properties, lack of targeted care for key areas, and poor prevention and treatment effects. It precisely matches the foot health function needs under different states of idle and active use, balancing wearing comfort and health practicality.

The utility model discloses an automobile seat safety belt fixing structure, which is characterized in that a safety belt lower lock catch is fixed at the lower side end of a seat framework and is exposed outside a seat surface sleeve, an upper safety belt plug and a lower safety belt plug are sleeved on a safety belt braid, and the safety belt lower lock catch is used for the insertion of the lower safety belt plug; the upper lock catch assembly comprises a metal plate support and a safety belt upper lock catch for an upper safety belt plug to be inserted, the metal plate support is welded to the side end of the upper portion of the seat framework and located at the end opposite to the safety belt lower lock catch, a mounting hole for a bolt to penetrate through is formed in the metal plate support, and the safety belt upper lock catch is fixed to the metal plate support in the mode that the bolt is matched with a nut. An opening is formed in the position, corresponding to the safety belt upper lock catch, of the seat face cover, the opening is closed through a zipper, and the safety belt upper lock catch can be exposed when the zipper is unzipped. The child seat can meet the using requirements of children and adults, and meanwhile the safety and comfort of sitting of the children are improved.

The invention relates to the technical field of degradable high polymer materials and disposable personal care products, and discloses a preparation process of a degradable high-barrier plastic film for a hair dyeing shawl, and the preparation process comprises the following steps: 1, preparing chitosan-dopamine grafted modified montmorillonite (CTS-DA-MMT): dispersing 5g of 20-30nm nano montmorillonite in a 2wt% acetic acid solution, and ultrasonically dispersing for 40 minutes by 200W; adding dopamine hydrochloride according to the ratio of montmorillonite to dopamine being 1: 0.2, adjusting the pH value to 8.5 by using 1mol / L NaOH, and carrying out stirring reaction at room temperature for 1 hour; adding chitosan according to the ratio of montmorillonite to chitosan being 1: 0.4, and stirring and reacting at the constant temperature of 50 DEG C for 3 hours; the pH is adjusted to 7.0 through 1 mol / L HCl, centrifugation is carried out for 15 min at the speed of 8000 r / min, washing is carried out three times through deionized water, vacuum drying is carried out for 8 h at the temperature of 60 DEG C, and the product is obtained. According to the preparation technology of the high-barrier plastic film for the degradable hair dyeing shawl, chemical grafting (instead of physical blending) of montmorillonite-dopamine-chitosan is achieved through catechol groups of dopamine, the problems of montmorillonite agglomeration and matrix compatibility are solved, and the degradable hair dyeing shawl is prepared. Meanwhile, through the dynamic adhesiveness of dopamine, the problem of barrier failure under dynamic stretching is solved.

The invention discloses a lithium battery with a protection function and a processing technology. The lithium battery comprises a lithium battery body, the protection device comprises a base, protection plates symmetrically arranged at the top of the base, side plates, a top plate detachably connected with the protection plates and the side plates, a third rubber pad arranged at the top of the top plate, first rubber pads arranged on the protection plates, and second rubber pads arranged on the side surfaces of the side plates; the invention has the beneficial effects that the base, the protection plate, the side plates and the top plate form a six-direction rigid protection space, and the L-shaped reinforcing columns are matched to enhance the structural rigidity; the rubber pad and the ultra-thin ceramic fiber buffer film form an elastic buffer system, so that external force such as collision and extrusion is effectively resisted, and damage to the shell and damage to internal components are avoided; through precise positioning between limiting blocks and limiting grooves and between inserting plates and inserting grooves, a threaded rod is used for reinforcing and eliminating gaps, and the battery is prevented from shaking; the threaded connection design facilitates maintenance and replacement, and stability and practicability are both considered.

The utility model relates to shopping bag technical field, especially portable shopping bag of environmental protection of expandable, including base, and the first bag body and second bag body connected to the adjacent two sides of base, the first bag body includes first wide side, second wide side, first long side and second long side, the second bag body includes third wide side, fourth wide side, third long side and fourth long side, the two side edges of base are connected with the adjusting part of one area and base same away from the first bag body and second bag body, the side of adjacent two adjusting parts is connected with the extension of one area and base same away from base, and the fold line part of two adjusting parts is established with base, two adjusting parts are folded in base under the action of fold line part, and make extension to be in the top of base, the utility model aims at providing a kind of shopping bag, which can meet the light demand of daily commuting, can also deal with the sudden large capacity loading, and give consideration to practical and environmental protection.

The invention relates to the technical field of roadbed detection equipment, and discloses a fly ash roadbed compactness detection device which comprises a pulling vehicle, a supporting frame is arranged on the pulling vehicle, a driving mechanism and a detection mechanism are arranged on the supporting frame, and the detection mechanism comprises a connecting frame, a plurality of lifting mechanisms, a sand measuring mechanism, a cleaning mechanism, a pit digging mechanism, a collecting mechanism and a base plate. The lifting mechanism comprises a vertical frame and a lifting table, the driving mechanism drives the detection mechanism to rotate, the sand measuring mechanism discharges and weighs standard sand, the cleaning mechanism cleans a roadbed, the pit digging mechanism digs pits in the roadbed, the collecting mechanism collects the standard sand in roadbed holes after detection, and the base plate positions the roadbed detection position. The coal ash roadbed compaction degree detection device realizes standardization, precision and high efficiency of coal ash roadbed compaction degree detection, the whole process of the device replaces manual operation by machinery, the problems of hole wall collapse, sand scattering, impurity residue and the like are effectively avoided, and the labor intensity of detection personnel is greatly reduced.

The utility model discloses a roll up banner support with a horizontal calibration function, and particularly relates to the technical field of display devices.The roll up banner support comprises a fixed base plate, two outer pipes are fixedly installed on the top of the fixed base plate, the bottoms of the outer pipes are inserted into the fixed base plate, a supporting mechanism is arranged above the fixed base plate, and the supporting mechanism is arranged on the fixed base plate. The supporting mechanism comprises an inner pipe, the top of the inner pipe is detachably provided with a top supporting plate, the stability of the equipment structure and the use flexibility are improved, the telescopic supporting legs can be adjusted according to different ground conditions, it is ensured that the support can be kept stable on different terrains, and the device is compact in structure, comprehensive in function and convenient to use. A stable and reliable display platform is provided for exhibition and display activities, practicability and flexibility are both considered, a user can rapidly judge whether the support is horizontal or not through the gravity plumb bob indicator, the support is rapidly adjusted to be in the horizontal state, and extra measuring tools do not need to be used.

This invention discloses a large depth-of-field real-time drift correction method and system based on a programmable point spread function (PSF). This invention achieves wide-range, high-precision drift correction by dynamically switching different PSF modes, solving the problem of the trade-off between axial correction range and accuracy in existing technologies. This invention includes a marker detection module, a dynamic PSF switching module, and a closed-loop control module. It automatically selects the optimal PSF mode based on the real-time detected drift: astigmatic PSF is enabled when |z|≤1 μm, switching to double-helix PSF when 1μm<|z|≤2μm, Bessel PSF when 2μm<|z|≤3μm, and cloverleaf PSF is activated when |z|>3μm. Through adaptive PSF switching, this invention achieves full closed-loop real-time correction within a 6μm axial range, with a drift suppression error ≤2 nm, making it suitable for long-term super-resolution imaging of live cells.

The utility model discloses a portable milk collection and storage device, including flexible negative pressure storage bottle, the flexible negative pressure storage bottle includes the bottle body, the bottle body middle part inner wall between integrally arranged has the flexible baffle, the flexible baffle middle part is equipped with the through -hole, the through -hole circumference inner wall is integrally formed and is provided with a plurality of annular distribution's valve, the bottle body interior space is divided into negative pressure chamber and storage chamber upper and lower two parts respectively by the flexible baffle, the negative pressure chamber top is provided with the collection and is connected bottle mouth, the outside of collection and is connected bottle mouth is detachably connected with milk collection part, through with the integration of collection and storage function, avoided the existing device structure complex, the poor portability situation. Flexible bottle body is through manual extrusion, need not external power supply can realize milk collection, the integral fan -shaped valve simplifies the structure of check valve, reduces the part connecting gap, reduces the risk of liquid leakage and is convenient for cleaning. The whole gives consideration to practicality, portability and health safety.

The invention relates to the technical field of medical supplies, and discloses a multifunctional neonatal noninvasive respirator head cap which comprises a head cover, a multi-specification adaptive interface module, a self-adaptive noise reduction assembly, a constant-temperature adjusting system and a safety locking adjusting mechanism, the head cover is integrally formed by medical elastic breathable fabric, and a fixing ring of an annular structure is fixedly installed on the outer side of the head cover; the fixing ring is used for achieving rapid disassembly, assembly and positioning of the interface module, the self-adaptive noise reduction assemblies are symmetrically arranged on the two sides of the head cover, and the constant-temperature adjusting system is embedded in the head cover and flexibly attached to the head skin of the newborn. Through the rotary clamping structure of the fixing ring, the rotating ring, the limiting piece and the connecting block and the modular design of the multi-specification pipeline connectors, rapid adaptation and disassembly and assembly of different brands of breathing machine pipelines are achieved, the whole set of head cap does not need to be replaced for newborns, and the purchase and inventory cost of hospitals is greatly reduced. Meanwhile, the operation process of medical staff is simplified, and the treatment preparation efficiency is improved.

This utility model discloses a detachable hooded hair towel for children, specifically relating to the field of daily necessities technology. It includes a towel body with a dividing line on its upper side and a zipper at the top. The towel's inner quick-drying layer is soft and skin-friendly, providing children with an extremely comfortable experience, offering warmth and comfort. The outer high-efficiency absorbent layer quickly absorbs and locks in moisture, ensuring rapid drying of hair and scalp. A carefully designed elastic band fits snugly against the head when the towel is folded into a hood shape, ensuring effective wiping while preventing slippage, combining practicality and safety. This utility model of a quick-drying children's towel has advantages such as simple structure, ease of use, and strong adaptability. Its unique design not only solves many problems existing in the use of traditional towels but also significantly improves the towel's durability and practicality. Therefore, this towel has high practical value and market potential, and is worthy of widespread promotion and application.

The application discloses a fault rock burst danger evaluation and pressure relief prevention and control numerical simulation method, and belongs to the technical field of coal mine safety mining.The application constructs a dynamic and static superposition numerical simulation model, accurately quantifies three induced stresses of tectonic stress, mining stress and dynamic load stress, realizes impact danger grading evaluation, optimizes pressure relief parameters based on the evaluation result, improves the pertinence and effectiveness of fault rock burst prevention and control, effectively overcomes the defects of inaccurate fault rock burst danger evaluation and unscientific pressure relief parameter design in the prior art, realizes accurate grading evaluation of fault rock burst danger, and provides a scientific basis for rock burst prediction and prediction.Furthermore, the method flow of the embodiment is clear and has strong operability, combines field actual data and numerical simulation technology, takes into account the theory and practicability, and can be flexibly applied to coal mines containing faults.

The utility model relates to the technical field of warp knitting plush, especially a high-density waxberry plush and production equipment. The high-density waxberry plush includes a bottom silk layer and a pile layer. The high-density waxberry cloth of the application takes the high-density weaving bottom silk layer of superfine dacron silk as the base, forms the double-layer staggered pile structure through the curling, pulling wool, shaking grain process: the first pile is fluffy, the heat preservation effect is good, the second pile is dense and prevents wind and fills the gap, and the density of 300-500 particles per cm 2 The combination of long and short piles significantly improves the warmth retention, forms the soft and waxy concave-convex particle touch feeling, and the pile clusters can also hide dust when being worn daily, and the practicability and the aesthetic degree are considered.

The utility model discloses a European style electric rear lock with a self-rotation opening function, and relates to the technical field of electric locks. The lock comprises a shell, a bearing positioning piece and an internal transmission system, a gear motor and a rechargeable battery are arranged in the shell, the gear motor drives a gear ring to rotate through a multi-stage gear set, and the gear ring fixes a lock cylinder positioning piece to achieve self-rotation opening of a lock cylinder. The transmission efficiency is optimized and the size of the lock is reduced through precise matching of the gear mounting piece and the bearing positioning piece. The circuit board is integrated with a touch switch, and the decorative plate is lightly touched to trigger unlocking. The rechargeable battery and the gear motor are arranged in a separated cavity mode, electromagnetic interference is avoided, and meanwhile the plug key and the spring are in linkage to provide a power-off emergency mechanical unlocking function. A bearing is fixed in a concave position of the bearing positioning piece, and the lock cylinder positioning piece ensures the axial alignment precision through a positioning hole and a lock cylinder mounting cavity. The intelligent electric lock integrates intelligent operation and efficient transmission, and the problems that a traditional electric lock is large in size, depends on an external power source, and is complex in operation are solved.

The application provides a relay fault detection method and device, electronic equipment and storage medium, and belongs to the technical field of fault detection. The method comprises the following steps: acquiring electrical data, action time data, shell temperature data and environmental humidity data collected by a relay checker; the electrical data, the action time data, the shell temperature data and the environmental humidity data are respectively preprocessed to obtain a standard feature data set; the electrical data comprises power, current and voltage, and the action time data comprises attraction time and release time; abnormal mark data is determined based on the standard feature data set and rated reference data; correlation feature analysis is performed on the standard feature data set to obtain correlation abnormal mark data; fault risk data is obtained based on the abnormal mark data and the correlation abnormal mark data; and a fault determination result is obtained based on the fault risk data. The application can improve the accuracy of relay fault detection.

The utility model relates to domestic appliance safety technical field discloses anti -tilt device, including flexible connecting piece and a plurality of anti -tilt support, flexible connecting piece is annularly arranged, a plurality of anti -tilt support are sequentially spaced apart along the extension circumferential direction of flexible connecting piece and are connected with flexible connecting piece, a plurality of anti -tilt support of the utility model are sequentially connected through flexible connecting piece, make whole structure can utilize the deformable characteristic of flexible connecting piece, flexible adaptation different the various shape of the article to be supported, whether regular square, round, or with the irregular mode such as rised, anti -tilt support can better adhere to the profile of the article to be supported through the adjustment of flexible connecting piece, thereby ensure that on various shapes of the article to be supported can stably install and play the anti -tilt effect, improve the versatility and adaptability of device, solved the problem that the anti -tilt base structure adaptability of purifier is limited.

This utility model relates to the field of logistics transportation equipment technology, specifically disclosing an energy-saving and environmentally friendly refrigerated truck body, including a truck body, a refrigeration unit, and a battery. It also includes a flexible photovoltaic power generation panel laid on the top of the truck body, a phase change energy storage layer integrated into the inner wall of the truck body, and a control system. The refrigeration unit is an electric variable frequency refrigeration unit, which directly provides clean energy to the refrigeration device through a solar photovoltaic power generation system, significantly reducing carbon emissions and noise pollution from traditional fuel-fired power generation. The combination of phase change energy storage and high-efficiency insulation materials greatly improves temperature stability, ensuring that goods are kept in a constant temperature environment throughout transportation, effectively protecting the quality of perishable goods. The intelligent control system, through multi-module operation, achieves precise energy allocation and efficient equipment operation, extending equipment lifespan while reducing maintenance costs. The overall design balances practicality and environmental protection, providing a reliable, economical, and environmentally friendly technical solution for the cold chain logistics industry.

The application discloses an output self-correction circuit for a medical electron gun grid power supply, comprising a low-voltage side control unit, an isolation transmission unit, a high-voltage side control unit, a grid power supply and an independent sampling network; the low-voltage side control unit receives a dose rate, an ambient temperature, an external sampling signal and an output voltage feedback signal, generates a corrected reference signal and transmits the corrected reference signal to the high-voltage side control unit through the isolation transmission unit; the high-voltage side control unit outputs a control increment to the grid power supply after F / V conversion of the corrected reference signal, simultaneously receives voltage feedback signals of the grid power supply and the independent sampling network, and transmits the voltage feedback signals to the low-voltage side control unit through the isolation transmission unit; the application provides the grid power supply with output self-correction for a medical electron linear accelerator, realizes long-term stability and parameter consistency of an electron gun emission beam current, does not need manual correction, and greatly improves work efficiency.

This utility model discloses an adaptive support mattress, including a mattress body with a groove in the middle and a base plate inside the groove. Multiple first support columns are provided on the base plate, and a first support block is provided at the upper end of each first support column. Multiple rotating seats are symmetrically arranged on the base plate, and protruding columns are rotatably connected between the rotating seats. A motor is provided on the outside of each rotating seat, and the output end of the motor is fixedly connected to the protruding column. A movable plate is provided at the upper end of each protruding column, and the movable plate is slidably connected to the first support column. Multiple second support columns are fixedly connected to the movable plate, and a second support block is provided at the upper end of each second support column. A contact soft layer is provided at the upper end of each first support block. This utility model achieves flexible switching between support and massage functions by controlling the lifting and lowering of the second support blocks, and the height of the second support blocks is adjustable, providing high flexibility.