44results about How to "Safe return" patented technology

The invention discloses an unmanned aircraft electric quantity early warning method and a device; the method comprises the following steps: using a satellite positioner to obtain inward journey drop point information of the unmanned aircraft; obtaining present position information of the unmanned aircraft, and calculating a horizontal distance and a vertical height difference between the present position of the unmanned aircraft and the inward journey drop point; obtaining battery state information of the unmanned aircraft, and calculating a maximum horizontal distance and a maximum climb or descending height of the unmanned aircraft using residual electric quantity at a preset flight speed; determining whether the electric quantity of the unmanned aircraft has reached a lowest critical point of safety inward journey or not according to the horizontal distance and the vertical height difference between the present position of the unmanned aircraft and the inward journey drop point, and the maximum horizontal distance and the maximum climb or descending height of the unmanned aircraft using residual electric quantity at the preset flight speed; if yes, controlling the unmanned aircraft to fly back. The unmanned aircraft electric quantity early warning method and the device can maximize a task flight time while ensuring the safety of the unmanned aircraft, thus maximizing the utilization efficiency of the aircraft.

The present invention provides, in at least one embodiment, a power rack apparatus for lifting dumbbells. The apparatus can have a conventional cage design or a novel cage design with dual pull up bars. The apparatus also has novel dumbbell trays configured to attach to a novel horizontal support. The horizontal support is configured to attach to the cage in a plurality of vertical positions and the horizontal support contains a plurality of slots for horizontal width adjustment of the dumbbell trays. The slots on the horizontal support are configured to receive a plurality of inclined dumbbell trays. The apparatus can be a combo power rack configured to hold barbells and dumbbells or a simplified power rack apparatus configured to just hold dumbbells.

An unmanned aerial vehicle (100) return path planning method and device are disclosed. The return path planning method comprises the steps of obtaining the current position, the target position to bereturned and preset flying limit area information of the unmanned aerial vehicle (100) if the triggering information used for indicating that the unmanned aerial vehicle automatically returns in the flying process of the unmanned aerial vehicle (100) (s101);and planning a return path of the unmanned aerial vehicle (s102) according to the current position, the target position to be returned and preset flying limit area information. The influence of the flying limit area is considered when automatic return path of the unmanned aerial vehicle is planned, so that the unmanned aerial vehicle can besafely returned after the unmanned aerial vehicle is out of control. The unmanned aerial vehicle can be prevented return failure of the unmanned aerial vehicle due to the unmanned aerial vehicle falling into a flying limit area and being clamped at the edge of the flying limit area.

The invention discloses a vehicle warning device capable of automatically detecting a highway guardrail position. The vehicle warning device comprises a warning board and a warning board installation base, wherein the warning board installation base is provided with a power supply module, and the vehicle warning device also comprises a distance measurement module capable of measuring a distance from the warning board installation base to the highway guardrail position, and the distance measurement module is electrically connected with the power supply module. The warning board is high in arrangement speed, the intelligence degree is high, the manual intervention is reduced, the moving route is precise, the vehicle warning device can be well adaptive to the unfavorable weather condition and curve road conditions, the windproof performance is good, the warning board is flexible and diversified in transport way and is adaptive to different road conditions and weather situations, the warning board can be rapidly moved to a designated place, the warning board can be automatically restored after rolling over, and the cost is low.

Provided is an emergency load rejection mechanism of a deep-sea manned submersible. The emergency load rejection mechanism of the deep-sea manned submersible comprises a rotary shaft, wherein the rotary shaft penetrates through a pressure-resistant spherical shell cabin, a hand lever is inserted into the upper end of the rotary shaft, the middle of the rotary shaft is installed in a shaft sleeve through a shaft sealing device, the shaft sleeve is arranged under the pressure-resistant spherical shell cabin, a ballast hanging protruding claw wheel is installed at the lower end of the rotary shaft, the ballast hanging protruding claw wheel is inserted into a hole in the top surface of a ballast block, and hanging is achieved; two guiding slide ways are formed in each of the four vertical planes of the ballast block so that the ballast block can be smoothly rejected under the conditions of different inclined postures of the deep-sea manned submersible. According to the emergency load rejection mechanism of the deep-sea manned submersible, an operator directly rotates the T-shaped hand lever to reject the emergency ballast block so that the deep-sea manned submersible can obtain enough buoyancy to upwards float to the water surface in emergency, the problem that when a control system has a failure, a submersible cannot reject ballast block to upwards float is solved, and it is ensured that the manned submersible can return safely.

One aspect of the invention provides a sports equipment collection and return device including: a vacuum tube terminating in an opening; a return adapted and configured to return the sports equipment to a user; and a vacuum source adapted and configured to apply vacuum to the vacuum tube to draw the sports equipment from the inlet to the return.

Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful intermediates and products, such as amino-alpha, omega-dicarboxylic acid and amino-alpha, omega-dicarboxylic acid derivatives. These products include polymers and copolymers of alpha-amino, omega-dicarboxylic acids.

Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful intermediates and products, such as aliphatic hydroxy-carboxylic acid and hydroxyl-carboxylic acid derivatives. These aliphatic hydroxy-carboxylic acids are, in turn, polymerized. The polymerization is carried out using a thin film evaporator or a thin film polymerization/devolatilization device. Conversion of lactic acid to poly lactic acid is an especially useful product to this process.

The invention relates to an umbilical cable which adopts a central force bearing layer comprising a steel wire and a nylon rope, wherein an insulated core layer A, an insulated core layer B, an insulated core layer C, an insulated core layer D and a nylon braided sleeving are sequentially wound outside the central force bearing layer, wherein the insulated core layer A, the insulated core layer B, the insulated core layer C and the insulated core layer D have different specifications, numbers and winding directions of leads; the nylon braided sleeving is arranged outside the insulated core layer D; the lead comprises a conductor; an insulating layer is wound outside the conductor; and a shield is woven outside a sintered wire core. The invention overcomes the defects that the functions of the current cables can not meet the space environmental requirements, and the structure and appearance are ugly, big, black, thick and hard; and the umbilical cable is suitable to be used as a cable used in the space environment, especially suitable to be used as a cable for extravehicular activities in the space for astronauts of manned spaceflight engineering.

The embodiment of the invention discloses an unmanned aerial vehicle return method and device, an unmanned aerial vehicle and a storage medium, and the method comprises the steps: calculating the remaining flight time and return time of the unmanned aerial vehicle according to a preset period in a process that the unmanned aerial vehicle operates according to a preset operation path; determining whether the remaining flight time is greater than return time; if yes, obtaining a target return point on the preset operation path, and determining whether to return to the step of calculating the remaining flight time and return time according to the preset period or not according to the current position and the target return point; if not, taking the current position as a target return point, and flying from the target return point to the return destination when flying to the target return point; and if not, determining the current position as a target return point, and flying from the target return point to the return destination. According to the embodiment of the invention, the operation efficiency and the battery energy utilization rate of the unmanned aerial vehicle can be improved, the unmanned aerial vehicle can have enough electric quantity to return, and safe return of the unmanned aerial vehicle is ensured.

The invention discloses a safe and precise fire-fighting method based on an intelligent fire-fighting robot. The safe and precise fire-fighting method comprises the step (1) of detecting a fire sourcewith the maximum temperature through a sensor; the step (2) of detecting the temperature around the robot through the sensor at the same time, and controlling the robot to walk to the optimal fire-fighting distance from the fire source based on a set robot safety temperature threshold; the step (3) of measuring the optimal fire-fighting distance between the robot and the fire source through the sensor; the step (4) of calculating the optimal spraying angle and minimum initial velocity of fire extinguishing agents based on the found optimal fire-fighting distance between the robot and the firesource, and implementing fire fighting. The method further comprises the process of monitoring whether the robot should be returned safely or not according to the conditions of power consumption andthe fire extinguishing agents.

The invention relates to a power supply method for a drone with multiple battery packs. The drone includes a drone body, a drone power supply system includes a power module and a mainboard control module for controlling the operation of the power module, and the power module includes a plurality of battery assemblies which are connected in parallel. The method comprises the following steps that S1, the battery assemblies are numbered as the first battery assembly, the second battery assembly, ... and the nth battery assembly separately in a use order; S2, the motherboard control module startsthe first battery assembly according to the numbering sequence; S3, when the electric quantity of the first battery assembly is equal to or less than a critical electric quantity value, the mainboardcontrol module controls the first battery assembly to stop working and simultaneously starts the second battery assembly; S4, when the electric quantity of the second battery assembly is equal to or less than the critical electric quantity value, battery switching is performed according to the method in step S3 until the nth battery assembly is started; S5, when the remaining electric quantity ofthe nth battery assembly is equal to or less than a return electric quantity value, the mainboard control module controls the drone to automatically return.

Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful intermediates and products, such as hydroxy-carboxylic acids and hydroxy-carboxylic acid derivatives. A method includes treating a reduced recalcitrance lignocellulosic or cellulosic material with one or more enzymes and/or organisms (such as lactobacillus, Pediococcus, Rhizopus, Enterococcus) to produce an alpha, beta, gamma and/or delta hydroxycarboxylic acid (such as lactic acid, glycolic acid); and converting the alpha, beta, gamma and/or delta hydroxy-carboxylic acid to the product (such as esters, polymers, and copolymers).

The invention discloses a wireless charging unmanned aerial vehicle and a charging method. The wireless charging unmanned aerial vehicle comprises an unmanned aerial vehicle framework, a flying part and a charging part, wherein the unmanned aerial vehicle framework comprises a central frame and four machine arms, the four machine arms extend outwards from the central frame and are fixedly connected with the central frame, the flying part comprises screw blades and driving devices, the screw blades are arranged on the four machine arms respectively, the driving devices are connected with the screw blades in a transmission mode respectively, the charging part is fixedly installed in the central frame and comprises an electrical storage device, a wireless charging device and a wireless charging plate, the electrical storage device is fixedly installed at the bottom of the central frame, the wireless charging device is connected with the electrical storage device, the wireless charging plate is arranged at the top of the central frame, a solar panel is arranged on one side of the charging part, and the electrical storage device is electrically connected with the wireless charging device. The flying part drives the wireless charging plate of the charging part to be in butt joint with a receiving unmanned aerial vehicle to achieve air wireless charging, the unmanned aerial vehicle can achieve one-to-many continuous powering for returning on a plurality of unmanned aerial vehicles in the same wireless network area, so that the safe returning capability of the unmanned aerial vehicle is ensured.

The invention discloses an intelligent switching system for an operating room and an anesthesia recovery room, and relates to the technical field of medical management. The shift change system comprises a display terminal and a shift change medical equipment terminal, the display terminal comprises a shell, a display screen and an integrated circuit board arranged in the shell. The integrated circuit board comprises a central processing unit, a wireless communication module, an information storage module, a power supply module and a display module connected with the touch display screen; and the display terminal is in wireless communication connection with the shift-change medical equipment terminal, and is used for receiving patient operation basic information and shift-change key attention information sent by the shift-change medical equipment terminal, storing the information in the information storage module and wirelessly transmitting the information to the display module to be displayed through the display screen. According to the invention, the display terminal and the shift-change medical equipment terminal are arranged, so that the patient information can be quickly and accurately uploaded and displayed in real time through the display screen, the medical staff can conveniently master the physical condition of the patient, and the shift-change efficiency and the information transmission accuracy are improved.

The invention provides a water intake system of an unmanned aerial vehicle. The water intake system comprises a winch and a water intake bottle; a wire reel is arranged in the winch; a suspension wireis wound around the wire reel and is led out from beneath a shell; the water intake bottle comprises a bottle cap, a bottle body and a bottle bottom; the suspension wire led out from beneath the shell is connected to the bottle cap; the bottle cap is provided with a plurality of openings; a movable cover is movably hinged to each opening; a circular-truncated-cone-shaped structure is formed at the bottle cap after the movable covers cover and seal the openings; the bottom surface of the bottle bottom is provided with a circular water inlet; a circular baffle is arranged above the water inlet;the radius of the water inlet is smaller than the radius of the circular baffle; and a plurality of limiting assemblies are arranged on the upper surface of the bottom surface of the bottle bottom and define a movable area above the water inlet. According to the water intake system, the bottom surface of the bottle bottom is provided with the circular water inlet, so that sampling is facilitated;and the bottle cap is in a circular truncated cone shape, so that the resistance of the water intake bottle in water can be reduced to a great extent, and the stability of the unmanned aerial vehicleis guaranteed.