8results about How to "Guaranteed continuous power supply" patented technology

The invention provides a ground fault detection method and device. The device comprises an isolation DC-DC converter, a contactor KM1, diodes D1, D2 and D3, bulbs LP1 and LP2, indicating lamps LED1 and LED2, resistors R1 and R2, a voltage detection unit V and a controller. According to the invention, the power supply of the load can be switched from the DC bus to the isolated power supply without changing the power supply circuit of the transformer substation; meanwhile, load grounding fault detection and identification are automatically completed, manual operation is reduced, and detection efficiency is improved; high-efficiency isolation maintenance without power failure is realized, continuous power supply of important equipment is ensured, and safe and stable operation of a transformer substation is guaranteed.

The utility model relates to the field of power distribution cabinets with a dual-power output function, in particular to a power distribution cabinet with a dual-power output function, which comprises a cabinet body and a mounting plate, the inner wall of the cabinet body is fixedly connected with the mounting plate, and an output module is fixedly mounted on the front surface of the mounting plate. Two power distribution boxes and a control module are fixedly mounted on the back side of the mounting plate, a power module is fixedly connected to the side, away from the mounting plate, of each power distribution box, and connecting pipes are fixedly connected to the sides, close to each other, of the two power modules; one end, far away from the corresponding power module, of each connecting pipe is fixedly communicated with the control module, the outer surfaces of the two power modules are fixedly connected with magnetic blocks, through the power distribution cabinet with the dual-power-supply output function, a standby power supply can be automatically switched when a main power supply breaks down or is powered off, continuous power supply of a power system is ensured, and the power supply efficiency is improved. And the reliability and stability of the system are improved.

The embodiment of the utility model provides a power supply circuit of an automobile electronic device, and the circuit comprises a standby power interface which is electrically connected with a standby power supply; the main power interface is electrically connected with a main power supply; the power utilization end interface is electrically connected with a power utilization end; the charging circuit is electrically connected between the main power supply interface and the standby power supply interface; the output switching circuit is electrically connected with the main power supply interface, the standby power supply interface and the power utilization end interface; when the output switching circuit detects that the main power supply interface is connected with the main power supply, the output switching circuit supplies power to the power utilization end through the main power supply. When it is not detected that the main power supply interface is connected with the main power supply, the standby power supply supplies power to the power utilization end; and the charging circuit is used for charging the standby power supply through the main power supply. According to the technical scheme of the embodiment of the invention, seamless switching can be realized, the equipment reliability is improved, the user perception is reduced, the standby power supply is automatically charged, and the manpower and time cost is reduced.

The utility model discloses a kind of light therapy patches of convenient endurance, to provide a kind of light therapy patch of convenient endurance of charging convenience, it it includes charging box and light therapy module, the bottom of charging box is respectively built-in charging plate and battery one with charging plate electrical connection, the outer side wall of charging box is equipped with the USB interface with charging plate electrical connection, light therapy module includes control part and light therapy part, control part is fixed in the bottom of light therapy part and with light therapy part electrical connection, key is equipped on control part, the top of light therapy part is fixed with bonding module, the top of charging box is equipped with the limiting slot matched with light therapy part, limiting slot is equipped with the accommodating groove matched with control part, control part is located in accommodating groove after with charging plate electrical contact, the top of charging box is equipped with the flip cover covering light therapy module.The utility model has the beneficial effect that: effectively guarantee the endurance ability of equipment going out, reach the purpose of charging convenience.

The utility model relates to the technical field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle water first-aid air bag which comprises a machine shell, the inner wall of the machine shell is fixedly connected with a shell, the outer portion of the shell is fixedly connected with a first rotating assembly providing rotating capacity, and the bottom of the first rotating assembly is fixedly connected with a first closing plate. The bottom of the first sealing plate is fixedly connected with a fixing plate, the outer portion of the fixing plate is fixedly connected with a clamping assembly providing rotating capacity, the outer portion of the fixing plate is fixedly connected with two connecting blocks, the inner walls of the two connecting blocks are fixedly connected with fixing shafts, the outer portions of the two fixing shafts are fixedly connected with first clamping jaws, and the outer portions of the first clamping jaws are fixedly connected with second clamping jaws. And clamping jaws II are fixedly connected to the outer parts of the clamping assemblies. According to the device, the independence and the flexibility of the device are improved, the practicability of the device is also improved, and the rescue success rate and the positioning accuracy of air bag throwing are improved.

The embodiment of the invention provides an intelligent power distribution box and a power distribution system, and the intelligent power distribution box comprises a box body; the oil engine accommodating cavity is arranged in the box body, and the oil engine accommodating cavity is used for accommodating the oil-electricity input module when the intelligent distribution box expands the power generation function of the oil engine; the control panel is arranged in the box body, a first signal terminal is arranged on the control panel, and the first signal terminal is used for being matched with a second signal terminal of the oil and electricity input module; the main circuit is arranged in the box body, the main circuit is provided with a first conductive piece, and the first conductive piece is used for being matched with a second conductive piece of the oil and electricity input module; wherein the control panel is used for monitoring or controlling the oil and electricity input module after the first conductive piece and the second conductive piece are connected and the first signal terminal and the second signal terminal are connected. According to the technical scheme, through the modular design, the function expansion requirement of oil engine input can be flexibly met.

According to the Bluetooth inflation gun system for the automobile, a Bluetooth inflation gun is in radio connection with a tire pressure display screen, a user does not need to check tire pressure information through wired electric connection or an additional interface any more, and therefore using convenience is greatly improved. According to the scheme, the four operation keys on the operation panel correspond to the four tires of the vehicle respectively, a user can send tire pressure information of the specific tires to the tire pressure display screen through simple key operation, and the tire pressure display screen is provided with four display devices, so that the user can know the overall tire pressure condition of the vehicle clearly at a glance; data of four tires do not need to be recorded respectively, operation is simpler, and user experience can be improved; and each tire is provided with a corresponding operation key, so that the user is not easy to confuse or operate mistakenly. Besides, the tire pressure display screen adopts a modular design, and the bottom shell, the mounting frame, the front cover and the four display devices are respectively mounted on different connecting circuit boards, so that each component can be independently mounted and replaced, and the maintenance is convenient.

This utility model discloses a dual-power redundancy system for an unmanned tracked vehicle used in mining, comprising: dual independent power supply modules, a power controller, and a power switching unit; the dual independent power supply system connects the power controller and the power switching unit, and the power switching unit is connected to the power controller; wherein the power controller includes: a voltage converter module, a filter module, a clock signal module, an operational amplifier module, and a control module; the voltage converter module connects to the operational amplifier module and the control module, the filter module connects to the voltage converter module, the operational amplifier module connects to the control module, and the clock signal module connects to the control module. The dual-power redundancy system utilizes the non-mechanical switching advantages of power semiconductor switching devices to shorten power switching time, adopts a non-contact power switching mode, greatly improves the shock resistance of the power supply system, and ensures the reliability and stability of the power supply system.