19results about How to "Auto switch" patented technology

The invention provides a distribution network monitoring heterogeneous converged communication self-switching device and a distribution network monitoring heterogeneous converged communication self-switching method. The system comprises a communication module unit, a data processing unit and a switching execution unit. In the data processing unit, an environment sensing unit receives state data of the communication module unit, and a PICO unit processes link state data and uploads the link state data to an MCU unit for processing; the data encryption unit is used for encrypting and decrypting transmission data; the data caching unit is used for storing data transmitted during communication abnormity or switching and reissuing the data after communication recovery; and the MCU processing unit executes a link switching strategy according to the data processed by the PICO unit, and controls the switching execution unit to switch when detecting that the quality of the current main communication link is reduced to be below a preset threshold value. According to the invention, automatic and rapid switching in different network environments is realized, and the transmission stability and efficiency of the monitoring data of the power distribution network are remarkably improved.

The transformer inductor assembling equipment comprises a rack, an electric control box is arranged in the rack, an electric control system is arranged in the electric control box, and a product conveying mechanism, a feeding mechanism, a taking mechanism and a locking mechanism are arranged on the rack; the product conveying mechanism is transversely arranged on the rack and is used for conveying and positioning a power supply product to be assembled; the feeding mechanism is arranged on one side of the product conveying mechanism and used for feeding the transformer and the inductor into the taking mechanism from the outer side of the rack. The material taking mechanism is installed above the product conveying mechanism and used for completing assembling of a transformer and an inductor of the power supply product and transferring the transformer and the inductor to the power supply product from the feeding mechanism. And the locking mechanism is arranged on one side of the feeding mechanism along the product conveying mechanism and is used for locking and fixing the transformer, the inductor and the power supply product. Automatic feeding, taking, assembling and locking are achieved, a transformer and an inductor which need to be assembled are assembled on a power product, the automation degree is high, and the working efficiency is high.

A PCB loading device, comprising a separable loading carrier plate and a base module. The loading carrier plate is provided with a plurality of placement slots for placing PCBs. Each placement slot is provided with a clamping assembly at the clamping angle. The clamping assembly comprises a clamping block and a return spring. The clamping block is slidingly connected to the loading carrier plate and has a movement tendency towards the placement slot. The clamping block is provided with a driving hole. The base module comprises a base and a fixed platform. A driving plate is slidingly connected below the platform. The driving plate is provided with a driving pin. The driving pin is inserted into the driving hole after sequentially passing through the avoidance holes of the platform and the carrier plate. The driving plate is connected to the base through a driving spring and is provided with a stop block which is movably connected to the driving motor execution end. The utility model realizes the synchronous control of multiple clamping mechanisms through single motor driving, has the functions of automatic clamping and loosening, adopts spring grading locking, improves the positioning accuracy, realizes self-centering positioning in combination with the V-shaped chuck, and effectively improves the positioning accuracy and clamping efficiency of the PCB.

The present invention discloses a large-displacement multifunctional acid solution preparation and supply integrated system and a dosage calculation method, which relates to the field of acid solution mixing technology, including a powder tank, a front tank, and a rear tank. The powder tank is connected to the front tank and the rear tank through a jet injection module; the front tank and the rear tank are connected through a two-way circulation pipeline; the rear tank is provided with a single circulation pipeline, the bottom of the rear tank is connected to the discharge pipeline, and the top of the rear tank is connected to the clean water pipeline. The present invention can not only realize batch mixing of acid solution, and in the case of discontinuous supply of industrial raw acid, a batch of acid solution can be prepared and then continued to be prepared after the subsequent acid solution is transported to the place, but also realize online acid preparation, and the industrial raw acid can be prepared in advance to achieve simultaneous preparation and use, and can also be prepared and stored according to production; it can prepare both high-viscosity gelling acid and conventional low-viscosity deblocking acid, with a maximum acid uptake / absorption rate of 6m³ / min and a maximum discharge rate of finished acid of 10m³ / min.

The invention relates to the technical field of wireless communication, in particular to an internal and external antenna switching method, system and device, a storage medium and a product. The method comprises the following steps: respectively carrying out power separation on an external antenna and a built-in antenna based on a directional coupler to obtain first reflection power and second reflection power; performing voltage signal conversion on the first reflection power and the second reflection power based on a radio frequency power detector to obtain a first voltage signal and a second voltage signal; comparing the first voltage signal with the second voltage signal based on a voltage comparator; and taking the antenna corresponding to the lower voltage value in the first voltage signal and the second voltage signal as a target antenna, and switching the radio frequency signal to the target antenna. According to the method, the switching process is based on accurate power detection and voltage comparison, so that the optimal antenna can be selected, and the switching efficiency of the internal antenna and the external antenna is improved.

The utility model discloses an automatic sand blasting machine which comprises a protective shell, a partition plate is fixedly connected to the interior of the protective shell, evenly-distributed leaking holes are formed in the rear side of the upper surface of the partition plate, an adjustable rotating disc is arranged on the upper side of the partition plate, a spray gun is fixedly connected to the rear surface of the interior of the protective shell, and the automatic sand blasting machine further comprises a transmission mechanism. And the transmission mechanism comprises a rotating rod, a second transmission shaft, a fourth gear, a fifth gear and third transmission shafts, the rotating rod is rotationally connected to the front side of the upper surface of the partition plate, the upper end of the rotating rod is fixedly connected with the lower surface of the rotating disc, and the evenly-distributed third transmission shafts are rotationally connected to the interior of the rotating disc. Materials can rotate during sand blasting, so that the materials are subjected to sand blasting by one circle, the sand blasting angle is wider, meanwhile, the materials can be automatically switched after the materials are subjected to sand blasting, and an operator does not need to manually operate for multiple times.

The present application relates to the technical field of environmental characteristic measurement, and particularly relates to a kind of sea-air environment dual-band infrared radiation characteristic measurement method and device.The method comprises: the portable measuring device is built on the shipborne platform;Control two-dimensional rotary table to rotate according to N type variable speed scanning path, and synchronously control mid-long wave thermal imager to carry out continuous image acquisition, while by photoelectric inertial navigation real-time record attitude information;Based on the time axis of photoelectric inertial navigation, each frame infrared image is aligned with the corresponding accurate azimuth and pitch angle Data, and the image gray value is converted into radiation brightness;Finally, the results are summarized.The device includes tripod, two-dimensional rotary table, adapter plate and the mid-long wave thermal imager and photoelectric inertial navigation fixed thereon.The present application synchronizes and aligns the data of photoelectric inertial navigation and thermal imager, effectively compensates the disturbance of ship body posture, solves the problem of low accuracy of infrared radiation measurement data on dynamic platform, and simultaneously has the advantages of fast response and portability.

The application provides a power supply circuit and a portable oxygen generator, wherein the power supply circuit is used for being connected with a load, and the power supply circuit comprises an interface circuit, a switching circuit, a control circuit, a boosting circuit and a driving circuit. The interface circuit is used for being connected with a first power supply; the switching circuit is connected with the interface circuit, and the switching circuit is also used for being connected with a second power supply; the control circuit is connected with the switching circuit, the interface circuit and the second power supply respectively, and the control circuit is used for controlling the switching circuit to switch the connection between the interface circuit and the second power supply; the boosting circuit is connected with the switching circuit; and the driving circuit is connected between the boosting circuit and the load, and the driving circuit is used for transforming the direct-current output voltage of the boosting circuit into alternating-current working voltage. In the above manner, the power supply demand in various scenes can be met, the stable operation of the power supply circuit and the electronic equipment is ensured, and the appropriate voltage and current supply are provided for the electronic equipment.

The invention discloses an adjustable energy-saving solar street lamp, relates to the technical field of solar street lamps, and aims to solve the technical problem that the conventional road surface brightness at night is not uniform due to the fixed illumination angle and lighting effect mode of an existing street lamp, and the adjustable energy-saving solar street lamp comprises a lamp post, a lamp cap, a solar panel and an adjusting mechanism. Through the angle adjusting assembly composed of the supporting cylinder, the supporting rod and the electric push rod, multi-mode adjustment of the illumination angle of the lamp holder is achieved, and the problems that the illumination direction of an existing solar street lamp is fixed and single, and different requirements of night driving guiding and severe weather safety warning cannot be met are solved; and on-demand energy saving cannot be realized in a low traffic flow period. In a conventional night mode, the lamp holder can be adjusted to project in an inclined mode in the driving direction, a continuous and uniform light blanket is formed, the sight distance of a driver is remarkably prolonged, the zebra crossing effect is eliminated, and energy is saved. In the foggy day mode, the lamp holder can be adjusted to obliquely irradiate in the direction opposite to the running direction, and a basis is provided for follow-up collaborative atomization lighting effect.

The invention discloses a hybrid five-level bidirectional active bridge containing an auxiliary branch and a control method thereof, and relates to the technical field of power electronics, and the hybrid five-level bidirectional active bridge comprises the steps: introducing an auxiliary bridge arm and a coupling auxiliary transformer into a primary side circuit, and enabling the primary side of a high-frequency transformer to generate five step levels by controlling the state of the bridge arm. According to the control, real-time voltage gain is calculated, a target switch time sequence mode is automatically selected according to the relation between the real-time voltage gain and a preset reference threshold value, and an optimal phase shift combination is calculated by calling a GOC optimization algorithm with the purpose of minimizing inductive current stress. According to the method, a plurality of voltage matching points are physically constructed through the coupling auxiliary transformer, and more control freedom degrees are provided for current stress optimization; and a GOC optimization equation is utilized to ensure that the device operates at a current stress minimum point under all working conditions. Through collaborative optimization of software and hardware, current stress of all working conditions is reduced, a ZVS region in a full load range is widened, and efficiency and stability of a wide voltage working range are improved.

The utility model discloses a kind of NAVTEX four-line audio circuit switching systems based on single-chip microcontroller control, comprising: instruction terminal, serial control module, single-chip microcontroller control module, state storage module, control signal monitoring module, line switching module, NAVTEX signal input module, NAVTEX signal output module, first / second signal monitoring module;Main instruction terminal is electrically connected with serial control module, serial control module is electrically connected with single-chip microcontroller control module, single-chip microcontroller control module is electrically connected with button control module, display module, state storage module, control signal monitoring module, line switching module, line switching module is electrically connected with NAVTEX signal input module, NAVTEX signal output module, NAVTEX signal input and output module are electrically connected with first signal monitoring module and second signal monitoring module respectively;The utility model can be used for maritime NAVTEX system audio signal line automatic switching, remote control line switching, signal transmission quality monitoring, line connection state storage and inquiry.

The utility model relates to an automatic switching device for a horizontal mask plate. The automatic switching device sequentially comprises a horizontal carrying assembly and an optical assembly from left to right, a stock bin lifting assembly is arranged at the bottom of the left side of the horizontal carrying fixing plate, and a lifting lead screw module drives a stock bin above to move in the vertical direction. A plurality of laminates are evenly distributed in the stock bin in the vertical direction, and fool-proof pins matched with fool-proof pin holes in the bottom of a mask are installed on one sides of the laminates. And a tidying assembly is arranged on the horizontal carrying fixing plate below the carrying arm. The utility model is suitable for equipment with frequently replaced masks, and has the advantages of simplicity, rapidness, stable structure, safety, high efficiency and high automation level.

The utility model relates to the technical field of lathe fixtures, and provides a fixture conversion device for gear machining, which comprises a lathe main body, a cavity is arranged in the lathe main body, a fixing plate is fixedly connected in the cavity, a guide rail is fixedly connected between the fixing plate and the inner wall of the cavity, and a guide rail is arranged on the guide rail. A control panel is installed on the lathe body, a driven gear is rotatably installed in the lathe body, and through arrangement of a rotating sleeve, a rotating disc and other structures, rotation of the rotating disc can be achieved through meshing of a driving gear and the driven gear during use; according to the technical scheme, when the rotating disc rotates, the two rotating sleeves can drive the different clamps to be switched, after switching, connection with the first driving motor is achieved through the arrangement of the clamping block, and therefore rotation is started, and more automatic clamp switching is achieved on the whole; the problem that in the prior art, a clamp is inconvenient to replace and clean is solved.

The invention belongs to the technical field of micro-grids, and particularly relates to an alternating current and direct current hybrid micro-grid system and an implementation method, and the system comprises an alternating current and direct current hybrid micro-grid system AO and an alternating current and direct current hybrid micro-grid system BO; the alternating current and direct current hybrid micro-grid system AO comprises a power grid and a first generator set, the power grid and the first generator set are connected with S1 static change-over switches STS through 380V alternating current buses, the two S1 static change-over switches STS are connected with an energy storage converter PPSA1 through connecting lines, and the energy storage converter PPSA1 is connected with the first generator set through connecting lines. According to the invention, two sets of AC / DC hybrid micro-grid systems are utilized, bidirectional energy flow between a 750V DC bus and a 1500V DC bus is established, switching of different voltage levels in different AC / DC hybrid micro-grids is realized, automatic switching under different AC / DC hybrid micro-grid application scenarios can be satisfied, and meanwhile, the system has the functions of independent system self-control, low power consumption and the like. And cross-regional energy interaction can be effectively realized, and different power utilization requirements are met.

The present invention provides a water-cooled energy storage container, including a box body, a battery assembly, a heat exchange assembly, and also includes: an air guide assembly, the air guide assembly includes: a first air inlet, connected to the second cavity to form a first air inlet channel; a second air inlet, connected to the second cavity to form a second air inlet channel; an exhaust port, connecting the second cavity with the external space of the box body; an air suction hood, having a first opening and a second opening, the first opening is connected to the second air inlet, and the second opening faces downward; a control assembly, including: a first sensor module, forming first flow data and second flow data; a control module, receiving the first flow data and the second flow data, forming a control instruction; a motor module, controlling the air suction hood to open or close the second opening. After adopting the above technical solution, even when the original air inlet is blocked by snow, it can operate at a low cost without changing the air intake and exhaust conditions.

The invention provides a water-cooled energy storage container which comprises a container body, a battery assembly and a heat exchange assembly and further comprises an air guide assembly, and the air guide assembly comprises a first air inlet communicated with a second cavity to form a first air inlet channel; the second air inlet is communicated with the second cavity to form a second air inlet channel; the exhaust port is communicated with the second cavity and the external space of the box body; the air suction cover is provided with a first opening and a second opening, the first opening is communicated with the second air inlet, and the second opening faces downwards; the control assembly comprises a first sensor module which forms first flow data and second flow data; the control module is used for receiving the first flow data and the second flow data to form a control instruction; and the motor module controls the suction hood to open or close the second opening. After the technical scheme is adopted, even if the original air inlet is blocked by accumulated snow, the device can operate at low cost under the condition of not changing the air inlet and exhaust conditions.

This application relates to an unmanned road marking vehicle, comprising a mobile chassis; a storage mechanism including a material storage device and a microsphere storage device; a marking device including a marking material chamber and an opening and closing mechanism, the opening and closing mechanism including a crank-slider assembly and a movable baffle, the crank-slider assembly driving the movable baffle to reciprocate to open and close the marking material chamber; and a spreading device connected to the outlet of the microsphere storage device, the spreading device including two spreading ports respectively located in front of and behind the marking device in the marking direction of travel. The unique front and rear dual spreading port design of the marking vehicle solves the problem of glass microsphere coverage when the vehicle travels in both directions. The openable and closable dispensing device in the marking device can achieve automatic and precise switching between solid and dashed lines through program control, meeting the complex requirements of road marking specifications.

This utility model relates to the field of wind turbine generator box-type transformer technology, specifically to a high-voltage side power supply monitoring device for a box-type transformer based on a voltage transformer. The device includes: a first voltage side, a box-type transformer, a second voltage side, a UPS, a dual-power switching device, and a power consumption side connected in sequence. The first voltage side includes: a first voltage cable inlet and a first voltage switch connected in sequence, and a voltage transformer. The first voltage winding of the voltage transformer is connected to the first voltage cable inlet, the second voltage winding of the voltage transformer is connected to the dual-power switching device, and the first voltage switch is connected to one end of the box-type transformer. This utility model improves the power supply reliability of wind farms, achieves efficient automated management, quickly responds to faults, reduces safety hazards, ensures stable operation, and promotes the intelligent transformation of the wind power industry.

The invention discloses a model prediction control method and system for a totem-pole PFC circuit, and belongs to the technical field of totem-pole PFC circuits, and the method comprises the steps: monitoring the input voltage of an AC power supply, the bus voltage of the totem-pole PFC circuit, and load demand information in real time; determining that the totem-pole PFC circuit works in a boost mode or a voltage-multiplying mode and driving signal distribution logic of each switch tube in the bridge circuit; calculating an optimal modulation ratio based on a model prediction control algorithm according to an error between the target bus voltage and the currently detected bus voltage; generating a first SPWM signal with a corresponding duty ratio and a complementary second SPWM signal according to the optimal modulation ratio; and distributing the first SPWM signal and the second SPWM signal to corresponding switch tubes to realize control of the bus voltage. According to the method, the SPWM duty ratio is dynamically adjusted through model prediction control, and rapid, accurate and stable control over the totem pole PFC bus voltage is achieved.