Abstract: A method and a device for obstacle or ground recognition and flight control, and an aircraft. The method for obstacle or ground recognition includes: determining point cloud data of a region in front of an aircraft; dividing the region in front into several subareas, determining an altitude of each of the subregions based on the point cloud data in each of the subregions; performing linear fitting on the altitudes of the several subregions, and determining whether an obstacle and/or ground is present in the front region according to the fitting result.

Abstract: A method for planning sample points for surveying and mapping is disclosed, which includes: acquiring a reference photographing location point corresponding to a region to be surveyed and mapped, and establishing a mapping relation between one shooting point in a combined shooting point set and the reference photographing location point; determining a plurality of auxiliary photographing location points corresponding to the reference photographing location point based on the mapping relation preset relative positional relations between the shooting points in the combined shooting point set; and using the reference photographing location point and the plurality of auxiliary photographing location points as sample points for surveying and mapping based on which an unmanned aerial vehicle for surveying and mapping performs surveying and mapping in the region to be surveyed and mapped. An apparatus for planning sample points for surveying and mapping, a control terminal, and a storage medium are also disclosed.

Abstract: A flight control method and device for an unmanned aerial vehicle and a remote controller are provided. The method includes that: multiple pieces of locating data obtained by a locating operation are acquired in a remote controller; multiple target positions are determined according to the multiple pieces of locating data; a flight route is calculated according to the multiple target positions; and the flight route is sent to the unmanned aerial vehicle for flight according to the flight route. According to the method, carrying of multiple sets of equipment is avoided, and hardware cost is reduced.

Abstract: A ground station, an unmanned aerial vehicle, and a system and method for communication between a ground station and the unmanned aerial vehicle are provided. A transaction schedule component of the ground station stores at least one transaction frame of at least one application, also controls a first communication component of the ground station to send the at least one transaction frame to a target unmanned aerial vehicle. A second communication component of the target unmanned aerial vehicle receives the at least one transaction frame sent by the ground station; a flight controller of the target unmanned aerial vehicle acquires the at least one transaction frame, and controls the target unmanned aerial vehicle to execute at least one operation indicated by the at least one transaction frame; and the flight controller further controls the second communication component to return the at least one data frame to the ground station.

Abstract: A method for configuring navigation chart is provided. The method may include: acquiring a current flight position, posture information and a depth image detected at the current flight position of an unmanned aerial vehicle (S110); acquiring three-dimensional position information of each point according to the current flight position, the posture information and the depth image (S120); and projecting the three-dimensional position information of the each point into a local navigation chart taking the current flight position as a center according to a weight that is set respectively (S130). An automatic obstacle avoidance method, an automatic obstacle avoidance apparatus, a terminal and the unmanned aerial vehicle (800) are further provided.

Abstract: A system and method for supplying agricultural products, and a transaction processing method for agricultural products are provided. The system includes: a server, a monitoring device, and a transit device, wherein the server is configured to receive a selection instruction from a consumer terminal, determine a transit device in accordance with the selection instruction, and assign a verification code corresponding to the transit device to the consumer terminal; the monitoring device has a correspondence relation with a place of origin of a target agricultural product, and is configured to acquire an identity verification result of the transit device and generate a control instruction for opening a loading port of the transit device when the identity verification result indicates that the verification is passed; the transit device is configured to accommodate the target agricultural product.

Abstract: A battery module (100) and a method for controlling charge and discharge are provided. The battery module (100) includes a battery body disposed in an outer housing, a heat conduction assembly (4) connected between the outer housing and the battery body in a heat conduction manner, a first heating member (5) for heating the battery body, a second heating member (6) for heating the heat conduction assembly (4), a temperature sensor (8) for detecting a temperature of the battery body and generating a temperature signal according to the detected temperature of the battery body, and a control assembly (7) for receiving the temperature signal and controlling the first heating member (5) and the second heating member (6) according to the temperature signal.

Abstract: The embodiment of the disclosure relates to an Unmanned Aerial Vehicle (UAV) terrain simulation flying method and device, and a UAV. The method includes: acquiring a vertical distance between a UAV and the ground; acquiring an oblique distance between the UAV and the ground; acquiring an angle between the vertical distance and the oblique distance; and adjusting a terrain simulation flying state of the UAV according to the angle, the vertical distance and the oblique distance.

Abstract: An overvoltage protection method and device of an electronic governor in an aerial vehicle, and an aerial vehicle with the device are provided. The electronic governor is configured to control a motor. The method includes: collecting a DC bus voltage of the electronic governor; when the DC bus voltage is greater than a first voltage threshold and less than or equal to a second voltage threshold, adjusting a control parameter of the electronic governor based on a difference between the DC bus voltage and the first voltage threshold, such that the electronic governor controls the motor based on the adjusted control parameter to restrain further rise of the DC bus voltage, in which the second voltage threshold is greater than the first voltage threshold.

Abstract: A motor vector control method and device, and an aircraft are provided. The method includes: receiving a Pulse Position Modulation (PPM) signal; acquiring a first given voltage signal of a motor according to the PPM signal; adopting a control manner of giving a d-axis current 0, to acquire a d-axis voltage of the motor; and calculating a q-axis voltage of the motor at the next moment according to the first given voltage signal and the d-axis voltage of the motor, and performing vector control on the motor according to the d-axis voltage of the motor and the q-axis voltage of the motor at the next moment.

Abstract: A rotorcraft and an assembly and disassembly structure for a foot stand and an airframe of a rotorcraft are provided. The foot stand is disposed to a bottom of the airframe, the airframe has an accommodating groove, a top wall of the accommodating groove is provided with a hole, and a side wall of the accommodating groove is provided with a clamping slot, and the assembly and disassembly structure includes a fixing stand fixedly connected to the foot stand and accommodated in the accommodating groove; a plug pin movably mounted into the fixing stand, in which a portion of the plug pin passes through an upper surface of the fixing stand and forms an insertion end, and the insertion end matches the hole and is inserted into the hole; and an elastic component mounted in the fixing stand and connected to the plug pin.

Abstract: The embodiments of the disclosure discloses an aircraft spraying control device, a method thereof, and a spraying system, relating to the technical field of agricultural plant protection. The aircraft spraying control device comprises a micro-controller, a pump motor, and a nozzle motor; the micro-controller acquires the flight information of the aircraft and the preset pesticide spraying information of the aircraft, and acquires the target rotational speed n of the pump motor according to the flight information of the aircraft, the preset pesticide spraying information of the aircraft, and the pesticide discharging amount K per rotation of the pump motor so as to control the pump motor to rotate at the target rotational speed n of the pump motor so that the pump supplies pesticide to a nozzle. The micro-controller also controls the nozzle to spray.

Abstract: An unmanned aerial vehicle is provided and includes: an unmanned aerial vehicle body, including an airframe and an articles storing device; an arm, including at least two front arms symmetrically arranged with respect to a central axis of the airframe along a front-rear direction and at least two rear arms symmetrically arranged with respect to the central axis of the airframe; and a rotor-wing electric motor, including a front electric motor and a rear electric motor. A first end of the front arm is connected with a front end of the airframe, and a second end of the front arm is provided with the front electric motor to drive the unmanned aerial vehicle. A first end of the rear arm is connected with a rear end of the airframe, and a second end of the rear arm is provided with the rear electric motor to drive the unmanned aerial vehicle.

Abstract: A rotorcraft together with a heat dissipation structure for a motor are provided. The motor includes a body and a revolving shaft driven by the body, and the heat dissipation structure for the motor includes: a casing being a hollow structure having a top opening and an air inlet in a bottom portion, in which the body is disposed inside of the casing, and an air channel is formed between a circumferential edge of the body and an inner wall of the casing; a head cover connected to the revolving shaft of the motor synchronously and provided with a plurality of air flow picks on the lower surface thereof; and a mounting stand fixed to an upper surface of the head cover.

Abstract: A flight control method and device for an unmanned aerial vehicle and a remote controller are provided. The method includes that: multiple pieces of locating data obtained by a locating operation are acquired in a remote controller; multiple target positions are determined according to the multiple pieces of locating data; a flight route is calculated according to the multiple target positions; and the flight route is sent to the unmanned aerial vehicle for flight according to the flight route. According to the method, carrying of multiple sets of equipment is avoided, and hardware cost is reduced.