501results about How to "Ensure continuous and stable work" patented technology

The invention discloses a solar photovoltaic and commercial power combined power supply system and a control method thereof, and belongs to the field of new energy power supply systems. The structure of the system comprises a photovoltaic array, a commercial power supply, a DC/DC converter, a PFC converter and a DC/AC inverter, wherein the photovoltaic array and the commercial power supply are connected with a direct current bus through the DC/DC converter and the PFC converter respectively and supply power to an alternating current load through the DC/AC inverter. In the invention, for fullyutilizing solar, the DC/DC converter can operate with the maximum power of a photovoltaic battery; meanwhile, the commercial power is used as an auxiliary power supply, three power supply modes are realized, and the stable work of the load under various conditions is ensured.

The invention discloses a multi-channel parallel near infrared spectrum imaging system. A multi-wavelength light emitting diode (LED) is applied to finishing emission of near-infrared light. An avalanche photodiode is used for detecting a weak optical signal, the simulating lock-in amplifier technology is used for achieving amplification of the signal, and a near infrared spectrum cerebral function imaging helmet disclosed in Chinese patent application CN200520002784.8 can be used for improving the partial unreasonable design of a self-adaptation head portion. The multi-channel parallel near infrared spectrum imaging system can achieve continuous rapid accurate detection and collection of cerebral blood oxygen signals, overcomes the defect of an existing functional near infrared system, and brings superiority of the near infrared spectrum imaging technology compared with other cerebral function imaging technologies into full play.

The invention relates to a wireless sensor network node deployment and power supply method. The method comprises the steps of establishing a network node topological structure communicated with and covered by a network, determining the positions of energy consumption hotspots in a current network node topological structure by utilizing a preset data routing path selection algorithm according to the network node topological structure, carrying out deployment of renewable energy source nodes according to the positions of the energy consumption hotspots, and carrying out deployment of battery nodes on other network nodes in the current network node topological structure, dynamically adjusting power supply strategies of the battery nodes according to the power supply states of the renewable energy source nodes. Through the wireless sensor network node deployment and power supply method, under the restriction of limited number of the renewable energy source nodes, according to the positions of the energy consumption hotspots of the network, the number and the positions of the renewable energy source nodes can be determined, the combined deployment of different energy source nodes can be completed, the work tasks and the states of different nodes can be determined according to the conditions of collection and transformation of renewable energy sources, and the continuous stable work of the network and the maximized utilization of the renewable energy sources can be achieved.

A single-cell-thickness nano porous cobalt oxide nanosheet array electrocatalytic material is characterized in that a metal-doped cobalt oxide primary nanosheet array is perpendicularly grown on a conductive substrate, a porous nanosheet is obtained from each primary nanosheet, and the nanosheets are of porous structure; the material is used as an electrocatalyst for oxygen evolution reaction; the material also has excellent hydrogen evolution performance and may function as a bifunctional catalyst for an alkaline full-decomposition water system. The invention has the advantages that the material can effectively reduce overpotential and peaking potential of oxygen evolution reaction, increase conversion rate of single cobalt atoms and operate stably and continuously in a strong alkali environment; the material has excellent oxygen evolution reaction performance and can be applied as an anode and cathode of a full-decomposition water system, effectively reducing trough voltage; the material is simple to prepare, convenient to operate, low in cost and environment-friendly, and new idea and strategy are provided for the guide design and performance optimization of the bifunctional catalyst for the full-decomposition water system.

The invention discloses a sensor node power supply management circuit; the sensor node is powered by the energy collection technology; the power supply management circuit comprises a pre-stage energy storage module, a boost module, a rear-stage energy storage module, a control circuit module and an application circuit module; the pre-stage energy storage module is connected with the rear-stage energy storage module and the control circuit module input end through the boost module; the rear-stage energy storage module output end is connected with the control circuit module and the application circuit module input end; the control circuit module output end is connected with the application circuit module input end; the pre-stage energy storage module stores the collected environment energy as the boost module input power supply; the rear-stage energy storage module stores the boosted energy so as to provide energy for the control circuit module and the application circuit module; when two-end voltage of the rear-stage energy storage module changes in a set value scope, the control circuit module controls the application circuit module. The power supply management circuit can reasonably control collected energy to serve as the application circuit energy source, thus enabling the application circuit module to stably work.

The invention discloses a multi-station circular-disc type novel numerical control automobile hub polishing machine. The multi-station circular-disc type novel numerical control automobile hub polishing machine comprises a revolution circular disc assembly in the middle. Autoroatation hub clamp assemblies of multiple stations are evenly arranged on the revolution circular disc assembly in the circumferential direction at equal angles. Asynchronous polishing wheel assemblies of the stations and a loading and unloading station of one station are arranged around the autoroatation circular disc assemblies and correspond to the autoroatation hub clamp assemblies of all the stations. The polishing wheel assembly of each station comprises a three-direction displacement component and a polishing wheel machine head component deflecting at the preset angle along the horizontal axis and arranged on the three-direction displacement component. The polishing machine can achieve four-axis linkage and automatic compensation for the polishing wheel wear radius, and therefore production efficiency is improved greatly; meanwhile, the application range of complex-spoke hub polishing is enlarged, and the stable and consistent hub polishing quality is guaranteed; and the requirement on the experience of operators is lowered, and thus production efficiency and economic benefits are improved.

The invention provides an ultra-deep sea bed sediment ropeless gravity sampling system, mainly comprising a recycling unit and a discarding unit; the recycling unit comprises a beacon, a floating component, a rope and a sampler inner tube; the beacon is positioned at the top end of the floating component; the floating component, the rope and the sampler inner tube are connected with each other in sequence; the discarding unit comprises a sampler outer tube, a counterweight and a trigger unlocking mechanism; the counterweight peripherally arranged at the upper portion of the outer wall of the sampler outer tube; the trigger unlocking mechanism sleeves the outer wall of the sampler outer tube below the counterweight. The ultra-deep sea bed sediment ropeless gravity sampling system has higher reliability and safety and has lower cost than existing rope sampling methods.

The invention discloses a multi-station disc type novel numerical control polishing machine for pot type workpieces. The multi-station disc type novel numerical control polishing machine comprises a rotating disc assembly arranged in the middle. Multi-station pneumatic sucker components are evenly arranged in the circumference direction of the upper surface of the rotating disc assembly with equal angles. A loading and unloading station is arranged in the position, corresponding to one pneumatic sucker component, of the periphery of the rotating disc assembly. Single-polishing wheel assemblies and/or double-polishing wheel assemblies are arranged in the positions, corresponding to the rest of the pneumatic sucker components, of the periphery of the rotating disc assembly. The single-polishing wheel assemblies comprise three-direction displacement components and single-polishing wheel machine head components arranged on the three-direction displacement components. The double-polishing wheel assemblies comprise two-direction displacement components and double-polishing wheel machine head components arranged on the two-direction moving components. The multi-station disc type novel numerical control polishing machine for the pot type workpieces is provided with the single-polishing wheel assemblies and the double-polishing wheel assemblies so that the multi-station disc type novel numerical control polishing machine can meet the requirement for polishing of side walls and bottom faces of pot type workpieces with different shapes and different sizes, the production efficiency is greatly improved, meanwhile, it is ensured that the polishing quality of the pot type workpieces is stable and consistent, occupied area is saved, energy consumption is reduced, and the production efficiency and the economic benefits are greatly improved.

The invention relates to the technical field of laser speckle elimination, in particular to a shimming decoherence device based on a rotation reflecting surface and a scatterer. The problem that the existing laser speckle elimination device is poor in speckle elimination effect and image blurring can be caused easily is solved. The shimming decoherence device based on the rotation reflecting surface and the scatterer comprises a decoherence mechanism (1). The decoherence mechanism (1) comprises a motor (101), a reflector (102), a connecting piece (103) and the transparent scatterer (104). The reflector (102) and the scatterer (104) are fixed on two sides of the connecting piece (103) respectively, and an output shaft of the motor (101) is fixedly connected with the back of the reflector (102). A converging lens (2) and a light pipe (3) with a shimming function are sequentially arranged on an output optical path of the decoherence mechanism (1). The shimming decoherence device is reasonable in design and simple in structure and effectively eliminates the laser speckles.

The invention relates to a multi-ejector parallel type solar ejecting refrigeration unit which utilizes solar energy to supply cold air, which comprises a solar hot-water loop, an ejecting refrigerant loop and an air conditioner water loop. The unit solves the problems that the prior ejecting refrigeration system is only provided with an ejector, the structural dimension of the ejector is fixed and the efficiency of an ejector system is drastically declined directly because operation condition is derivated from design condition. The unit is arranged between a generator and a condenser, and is provided with two or more than two ejectors with different structural dimensions in parallel. The multiple ejectors can meet high-efficiency operation of variable working conditions; and the unit can automatically or manually switch to a proper ejector for working according to solar radiation or weather changing conditions, further ensure that the system operates in refrigeration season with high efficiency, can improve the operation efficiency of the solar ejector system, and realize the aim of supplying the cold air with high efficiency and reasonability, thereby improving the utilization rate of solar energy, saving energy, relieving the pressure of electricity grid at the peak time, and improving the light-heat utilization efficiency.

The invention provides a method for detecting a flaw on the surface of a fruit by using image processing in the technical field of image processing. The method comprises the following steps of: (1) obtaining a RGB (red, green and blue) image and an NIR (near infrared reflection) image; (2) removing the backgrounds of the RGB image and the NIR image to respectively obtain an RGB foreground image and an NIR foreground image only containing a fruit image; (3) transforming the RGB foreground image into a YCrCb color space image from an RGB color space image, and marking a new image as a new space image; (4) carrying out specific value computation on a Y component image of the new space image and the NIR foreground image to obtain a specific value image; and (5) extracting a fruit flaw image from the specific value image. According to the method, the flaw on the surface of the fruit can be stably, exactly and quickly detected, and the influence caused by the shape and the size of the fruit can be effectively avoided.

The invention discloses an active ring resonator-based single longitudinal mode low noise narrow band column vector fiber laser. The single longitudinal mode low noise narrow band column vector fiber laser comprises a pumping source, a wavelength division multiplexer, a gain fiber, an isolator, a coupler, a seed source, a first optical circulator, a second optical circulator, a single-mode fiber, a few-mode fiber engraved with a grating, a first polarization controller and a second polarization controller which are connected with one another in a closed end-to-end manner through a fiber coupling way to form a ring optical fiber resonator. The components of the single longitudinal mode low noise narrow band column vector fiber laser adopts an all-fiber coupling mode; the structure is compact, the polarization purity of output column vector laser is high, the coherence is well, a single longitudinal mode working manner is realized, and the spectrum stability is high.

A multidimensional radial pressure measuring device of a underground sucker rod comprises two parts: underground assemblies and ground accessories; when the measuring device is used in underground measurement, the underground assemblies and the ground accessories are separated and independently work; the underground assemblies are used for adaptively adjusting the data sampling frequency according to the change speed of radial pressure and amplitude index control, and the ground accessories are used for analyzing and processing the radial force data of the sucker rod at the previous time period; when the measuring device is arranged on the ground to perform data analysis, the underground assemblies and the ground accessories are connected through a data communication interface (605) by using a serial line; and the underground measurement data is transferred from a large-capacity flash memory (604). The multidimensional radial pressure measuring device is regular in structure, small in size and capable of measuring the multidimensional radial pressure of the underground sucker rod in real time and satisfying the measurement requirements in narrow spaces and complex working conditions.

The invention discloses full-automatic feeding and discharging and multi-station appearance detecting and sorting equipment and method for small parts. The equipment comprises a material disc feeding mechanism, a product feeding and discharging station, a product transplanting mechanism, a product secondary positioning station, a product detection objective table, a product detection station, a sorting and material changing station, an OK product and NG product sorting mechanism, an NG product placing station, an OK product supplementing and placing station, and an OK product whole disc output mechanism. A material disc reaches a product feeding and discharging station through the material disc feeding mechanism and is moved to a product secondary positioning station through the product transplanting mechanism, the product detection objective table moves and adjusts the angle of a product to detect all the angles of the product, and the OK product and NG product sorting mechanism sorts NG products in the material disc and supplements the OK products at vacant positions. The whole layout design is compact, the space position is fully utilized, the automation degree is high, the production efficiency is high, the compatibility is high, the equipment can be suitable for trays and products of different specifications, and the product detection range is wide.

The invention relates to a primary air system. The primary air system comprises a main body air duct and reversing air ducts; the main body air duct comprises a first cavity and a second cavity; moisture absorbing materials capable of absorbing moisture for air flows are arranged in both the first cavity and the second cavity; each reversing air duct comprises a movable part, and the movable part can move relative to the main body air duct to enable the reversing air duct has at least two working modes; when the reversing air ducts are in the first working mode, primary air is sent into a room via the first cavity, the moisture absorbing material in the first cavity can absorb the moisture, and return air is exhausted out of the room via the second cavity; when the reversing air ducts are in the second working mode, the primary air is sent into the room via the second cavity, and the return air is exhausted out of the room via the first cavity; the moisture absorbing material in the second cavity can absorb the moisture; and the moisture absorbing material in the first cavity can be regenerated. Switching of moisture absorption and regeneration of the moisture absorbing materials is realized through switching of the reversing air ducts between the first working mode and the second working mode, and dehumidified primary air can be continuously supplied into the room.

The invention provides a concrete grinding system for a roll squeezer and a grinding method thereof. The method comprises the following steps: 1) conveying process; 2) extruding and cycling extruding process; and 3) purifying and de-dusting process. The system and the method provided by the invention have the advantages that the concrete grinding system for the roll squeezer and the grinding method thereof are mainly applied to the grinding system of concrete industry; a traditional ball mill grinding system with high energy consumption can be replaced by a concrete grinding device system which comprises a roll squeezer, a powder selector and a bag type dust collector; the balling-free production is realized and the final grinding of material is finished; the cycling extruding process is used for fully utilizing the coarse particle and the new feeding mixing material to reprocess and a steady flow cabin is used for controlling the processing, thereby ensuring the stable continuous work of the roll squeezer; the concrete grinding process for the roll squeezer has the integrated functions of grinding and powder selecting, thereby further reducing the energy consumption caused by the grinding operation and the metal material abrasion and meeting the demand of the large-scale industrial development of grinding system. The concrete grinding system for the roll squeezer and the grinding method thereof provided by the invention are important technical revolutions of grinding industry.

The invention discloses a novel six-station disc-type numerical control cloth wheel buffing machine. The cloth wheel buffing machine comprises a base and a rotating disc arranged in the middle of the base. Five-station double buffing wheel assemblies and an one-station assembly and disassembly station are evenly arranged at the parts, around the rotating disc, of the base, and six-station double workpiece clamp assemblies are evenly arranged at the parts, corresponding to the five-station double buffing wheel assemblies and the assembly and disassembly station, of the rotating disc in an equal-angle mode. Each double buffing wheel assembly comprises a movable stand column and a double buffing wheel structure which is arranged on the stand column and corresponds to one double workpiece clamp assembly. The double workpiece clamp assembly on each station comprises two workpiece chucks matched in a linkage mode. Through rotating the double workpiece clamp assemblies and the double buffing wheel assemblies by one circle each time, twelve workpieces can be buffed, in this way, production efficiency is greatly improved, the application range of buffing complex curved-surface workpieces is enlarged, the stability and uniformity of the quality of workpiece buffing are guaranteed, occupied area is reduced, energy consumption is lowered, and the production efficiency and economic benefits are improved by times.

The invention discloses an online measurement method and device for anode current of an aluminum electrolytic cell. The online measurement method comprises the following steps: setting a plurality of main measurement points on an anode beam bus bar or a riser bus bar so as to obtain voltage values of the main measurement points, establishing a resistance network of the beam bus bar according to Kirchhoff voltage and current laws, and calculating the flowing-in current of each anode by utilizing the values of obtained voltage or voltage difference values. The real-time online dynamic acquisition on the flowing-in current of each anode of the aluminum electrolytic cell can be realized by using the measurement method and the device. The long-time stable and reliable online acquisition on the anode current can be realized when the online measurement method and device are applied to the aluminum electrolytic cell.

The invention discloses a pneumatic high-speed switch valve driven by giant magnetostriction, comprising a giant magnetostrictive actuator and a switch valve. The giant magnetostrictive actuator comprises a shell, a driving coil, a coil framework, a mandril, a giant magnetostrictive rod, an upper magnetic conduction body, a dished spring, a magnetic conduction sleeve, a lower magnetic conduction body and an adjusting bolt. The switch valve comprises a valve port plate, a cantilever core plug, a cantilever cover, a valve cover and a sealing gasket, wherein a cantilever simultaneously plays roles of amplifying displacement and serving as a valve plug and can realize automatic resetting. Due to a rectangular variable cross-section beam structure with optimized size, the valve plug is stressed more reasonably, and the equivalent mass is reduced. The thermal expansion coefficient of the coil framework is close to that of a material for making the giant magnetostrictive rod, and thus the influence of temperature rise on valve port output is restricted. The invention has the remarkable characteristics of small size, large flow, high frequency response, stable working performance, and the like.

The invention provides a control method of an ice maker. The ice maker comprises an ice storage box, an ice feeding device which is positioned on the bottom of the ice storage box and can be controlled to rotate, and a detecting device for detecting a full-ice state of the ice storage box. The control method comprises the following steps of: after ice making operation and ice removing operation are sequentially completed in sequence every time, performing full-ice detection for detecting whether the ice storage box is in the full-ice state or not; when the ice storage box is judged to be not in the full-ice state through full-ice detection, performing ice making operation and ice removing operation; when the ice storage box is judged to be in the full-ice state through full-ice detection,driving the ice feeding device to rotate to perform full-ice correction, and recording full-ice correction times once after completing full-ice correction once; and after performing full-ice correction each time, performing correction detection for detecting whether the ice storage box is in the full-ice state or not. The detected results of the detected full-ice state are corrected, so that the problem that the ice storage box is not filled up completely as a result of out-of-level stacking of ice blocks and is mis-declared in the full-ice state is avoided.