Flight data safety monitoring system of unmanned aerial vehicle

Abstract

A flight data safety monitoring system of an unmanned aerial vehicle belongs to the technical field of unmanned aerial vehicle safety. Comprising a data receiving unit, a database unit, a data analysis unit, a data safety judgment unit, a rotating speed detection mechanism, an ascending and descending detection mechanism, a forward flight and backward flight detection mechanism, a descending detection mechanism, a detection circuit, a strength detection circuit and a data transmission circuit. A magnet of the rotating speed detection mechanism is mounted outside a rotating shaft of the lifting motor; a coil is mounted outside the upper part of a shell of the lifting motor; the forward-flight and backward-flight detection mechanism is mounted at the lower end of the unmanned aerial vehicle; the landing detection machine is installed below a column body of the landing and landing supporting frame, the ascending and descending detection mechanism comprises a supporting base, a movable plate and a pressure resistor and is installed outside the upper end of the unmanned aerial vehicle, and the detection circuit, the data transmission circuit and the strength detection circuit are installed in the electric control box and electrically connected. When related data of the unmanned aerial vehicle is abnormal, flight control terminal personnel can be prompted to take corresponding measures, and powerful technical support is provided for safe flight of the unmanned aerial vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle data security monitoring, in particular to a flight data security monitoring system for an unmanned aerial vehicle. Background Art

[0002] A drone (unmanned aircraft) is an unmanned aircraft that is mainly controlled by radio remote control or its own program. It mainly includes military drones and civilian drones. Drones are small in size, low in cost, easy to use, and have low requirements for the environment (including take-off and landing environments), and are very popular among users.

[0003] During actual flight, the drone can transmit back the altitude and speed, meteorological data, and video data of the flight area under the action of its own multiple sensors. Although the existing drones can meet the needs of drone data collection and safe flight control to a certain extent under the action of multiple sensors, there are still some technical problems to be solved due to structural limitations. First, when the drone flies to an area with poor vision, such as dense fog, or the camera with night vision function of the drone fails and the image transmitted back to the flight control end (the flight control end has the function of wirelessly remote controlling the flight of the drone through the control system, and can also receive the data sent back by the drone and display it on the display screen) is not clear, so the flight control end operator cannot effectively know the instructions issued by the wireless remote control device and whether the drone has made corresponding actions, which will cause certain hidden dangers to the safe flight of the drone (for example, before the flight control end personnel control the drone or fly, rise or descend in altitude through the wireless remote control device, due to the blurred video signal transmitted back, it cannot be guaranteed that the issued flight control instructions have been executed by the drone). Second: It does not have the function of monitoring the working data of the lifting motor. During the flight, the flight control operator cannot timely understand the speed data of the corresponding lifting motor. For example, if the maximum speed of one or more corresponding motors is reduced due to a fault, the flight of the drone will have certain safety hazards due to the failure of relevant personnel to maintain it in time. Third: It does not have the function of monitoring the safety of the main stress points of the landing support frame and support arm (multiple lifting motors are installed on the outer ends of multiple support arms). When the support frame and support arm have inconspicuous cracks due to quality problems or material aging factors, the flight and landing of the drone will have certain safety hazards due to the failure of relevant personnel to maintain it in time (such as the support arm suddenly breaking during flight, the support frame breaking during landing, etc.). Summary of the invention

[0004] In order to overcome the drawbacks of existing UAVs as described in the background technology due to structural limitations, the present invention provides a UAV flight data safety monitoring system which, under the joint action of relevant mechanisms, can transmit in real time image data such as the UAV's ascent or descent altitude, forward or backward flight, and landing on the ground, which cannot be effectively collected by the camera, when the UAV is flying in an area with poor visibility, as well as the UAV's lifting motor speed data and data on whether the landing support frame and the support arm have structural damage to the flight control end. After the relevant software units of the flight control end perform intelligent analysis on the various data, when the corresponding data are abnormal, the flight control end personnel can be promptly prompted to take corresponding measures (such as promptly controlling the faulty UAV to return or land on the ground, etc.), thereby providing strong technical support for the safe flight of the UAV.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A flight data safety monitoring system for an unmanned aerial vehicle comprises a data receiving unit, a database unit, a data analysis unit, a data safety judgment unit, a speed detection mechanism, an ascending and descending detection mechanism, a forward and backward flight detection mechanism, a landing detection mechanism, a detection circuit, a strength detection circuit, and a data transmission circuit; the data receiving unit, the database unit, the data analysis unit, and the data safety judgment unit are application software installed in the control system of the unmanned aerial vehicle flight control end; the data receiving unit can receive the speed data of multiple lifting motors of the unmanned aerial vehicle, forward and backward flight data, ascending and descending data, and landing support data transmitted wirelessly by the data transmission circuit The data of the landing support frame touching the ground, the data of structural damage to the landing support frame and the support arm, and the data is transmitted to the data analysis unit after preliminary processing; the data analysis unit reads the data in the database unit based on artificial intelligence, analyzes the various data input by the data receiving unit, and analyzes the wireless command data issued by the UAV flight control end operator through the wireless remote control mechanism. When the UAV has abnormal lifting motor speed, forward and backward flight abnormalities, ascent and descent abnormalities, landing support frame touching the ground abnormalities, and structural damage to the support arm and landing support frame, the data safety judgment unit can alarm and remind the flight control end operator; the speed detection mechanism has multiple sets, The speed detection mechanism is an AC generator, the magnet of the generator is fixedly mounted on the outside of the rotating shaft of the lifting motor, and the coil of the generator is fixedly mounted on the outside of the upper part of the shell of the lifting motor; the forward and backward flight detection mechanism is a DC generator, and the DC generator is fixedly mounted on the lower end of the UAV; the landing detection mechanism is a pressure sensor, the upper end of the pressure sensor is fixedly mounted on the lower end of the column of one of the landing support frames of the UAV, and the lower end of the pressure sensor is fixedly mounted on the upper end of the lower frame of the landing support frame; the rising and falling detection mechanism includes a support seat, a movable plate, and a pressure resistor, one side end of the movable plate is rotatably mounted on one side of the support seat, and the movable plate is fixedly mounted on one side of the support seat. A buffer pad is fixedly installed on the upper and lower sides of the other side of the plate, and two pressure resistors are fixedly installed on the upper and lower ends of the other side of the support seat, and the lower end of the support seat is installed outside the upper end of the UAV; there are multiple sets of strength detection circuits, and each strength detection circuit is equipped with a detection line. Multiple detection lines are straightened and installed on the outer ends of the landing support frame and the support arm of the UAV; the detection circuit, data transmission circuit, and strength detection circuit are installed in the UAV's electronic control box, and the speed detection mechanism, forward flight and backward flight detection mechanism, landing detection mechanism, detection circuit, signal output end of the strength detection circuit and the multi-channel signal input end of the data transmission circuit are electrically connected respectively.

[0006] Furthermore, the data analysis unit can analyze the flight speed, flight altitude, meteorological data, and video data collected by the drone itself. When the flight speed or flight altitude is too high or too low, the meteorological data of the flight area deviates from the meteorological data of the flight area on the network, and the terrain data of the flight area deviates from the terrain data of the flight area on the network, the data security judgment unit can alarm to remind the flight control operator, the drone itself or the sensors it carries, and the drone is yawed.

[0007] Furthermore, the database unit stores the maximum and minimum operating speed data of multiple lifting motors of the drone, the signal voltage data output by the pressure sensor after the drone lands, the minimum and maximum voltage data output by the DC generator when the drone flies forward and backward, and the minimum and maximum voltage data output by the detection circuit when the drone rises and descends.

[0008] Furthermore, the data security judgment unit prompts the flight control end operator in a manner including screen display and alarm sound.

[0009] Furthermore, the magnet of the generator is located in the inner circle of the coil, and the outer side of the magnet and the inner side of the coil are spaced apart from each other.

[0010] Furthermore, the upper side of the upper buffer pad and the lower side of the lower buffer pad in the support seat are in contact with the force-bearing surfaces of the upper and lower pressure resistors respectively.

[0011] Furthermore, the detection circuit includes two electrically connected resistors, and is connected to the two pressure resistors, one ends of the two pressure resistors are connected, and the other ends of the two pressure resistors are connected to one ends of the two resistors respectively.

[0012] Furthermore, the strength detection circuit includes electrically connected transistors and resistors, and is connected to a detection line; one end of the first resistor is connected to one end of the second resistor and an emitter of the first transistor; the other end of the first resistor is connected to a base of the second transistor and a beginning end of the detection line; the end of the detection line is connected to the emitter of the second transistor; and the collector of the second transistor is connected to the other end of the second resistor and the base of the first transistor.

[0013] Furthermore, the data transmission circuit includes an electrically connected single-chip microcomputer module, a 4G data sending module, a resistor, and a diode. The power input terminals of the single-chip microcomputer module and the 4G data sending module are connected, thirteen resistors are respectively connected to thirteen signal input terminals 1 of the single-chip microcomputer module, and the other ends of three of the resistors are connected to the negative electrodes of three diodes.

[0014] Compared with the prior art, the present invention has the following beneficial effects: under the joint action of relevant mechanisms, the data transmission circuit of the present invention can transmit in real time image data such as the drone's ascent or descent altitude, forward or backward flight, and landing on the ground, which cannot be effectively collected by the camera, when the drone is flying in an area with poor vision, as well as the drone's lifting motor speed data, and data on whether the landing support frame and the support arm have structural damage to the flight control end. After the relevant software unit of the flight control end performs intelligent analysis on a variety of data, when the drone itself and the sensor data are abnormal, the flight control end display can promptly display text and sound an alarm, prompting the flight control end personnel to take corresponding measures (such as promptly controlling the faulty drone to return or land on the ground, etc.), which provides strong technical support for the safe flight of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the application software unit architecture of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure between the present invention and the unmanned aerial vehicle.

[0018] Figure 3 It is a schematic diagram of the structure between one of the lifting motors of the UAV and the rotation speed detection mechanism of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the rising and falling detection mechanism of the present invention.

[0020] Figure 5 It is a schematic diagram of the structure between the landing detection mechanism of the present invention and the landing gear of the UAV.

[0021] Figure 6 It is a circuit diagram of the present invention. DETAILED DESCRIPTION

[0022] Figure 1 , 2, 3, 4, 5, and 6, a flight data safety monitoring system for an unmanned aerial vehicle comprises a data receiving unit, a database unit, a data analysis unit, a data safety judgment unit, a speed detection mechanism, an ascending and descending detection mechanism, a forward and backward flight detection mechanism, a landing detection mechanism, a detection circuit 1, a strength detection circuit 2, and a data transmission circuit 3; the data receiving unit, the database unit, the data analysis unit, and the data safety judgment unit are application software installed in the control system of the unmanned aerial vehicle 4 flight control end (not shown in the figure); the data receiving unit can receive the speed data of multiple lifting motors 41 of the unmanned aerial vehicle, the forward and backward flight data of the unmanned aerial vehicle, and the unmanned aerial vehicle transmitted wirelessly by the data transmission circuit Ascending and descending data, landing support frame 42 of the UAV touching the ground data, structural damage data of landing support frame 42 and support arm 43 of the UAV, and the data is transmitted to the data analysis unit after preliminary processing; the data analysis unit reads the data in the database unit based on artificial intelligence, and analyzes the various data input by the data receiving unit, combined with the wireless command data issued by the UAV flight control end operator through the wireless remote control mechanism. When the UAV has abnormal speed of the lifting motor 41, abnormal forward and backward flight, abnormal ascent and descent, abnormal landing support frame 42 touching the ground, and structural damage of the support arm 43 and the landing support frame 42, the data security judgment unit will alarm and prompt the flight control end operator. The speed detection mechanism has four channels and the same number as the lifting motor 41 of the UAV. The speed detection mechanism is a small AC generator M. The magnets of the four-channel generator M are fixedly installed on the outer side of the upper end of the rotating shaft of the four lifting motors 41, and the coils of the four-channel generator M are fixedly installed on the outer side of the upper middle part of the shell of the four lifting motors 41.The forward and backward flight detection mechanism is an axial flow wind DC generator F, which is fixedly mounted on the front side of the lower end of the UAV 4, and the blades are facing the front side; the landing detection mechanism is a pressure sensor A3, the upper end of the pressure sensor A3 is fixedly mounted on the lower end of the column of one of the landing support frames 42 of the UAV, and the lower end of the pressure sensor A3 is fixedly mounted on the upper end of the lower frame 421 of the landing support frame. The lower ends of the lower frames 421 of the two landing support frames of the UAV are at the same height; the rising and falling detection mechanism includes a "["-shaped support seat 51, a movable plate 52, and pressure resistors RT1 and RT2. The left end of the movable plate 52 is rotatably mounted in the middle of the left inner end of the support seat 51 A buffer rubber pad 53 is glued to the upper and lower sides of the left end of the movable plate 52 respectively, and two pressure resistors RT1 and RT2 are fixedly installed at the upper and lower ends of the right side of the support seat 51 respectively, and the lower end of the support seat 51 is installed outside the upper end of the UAV 4; the strength detection circuit has six channels, and the total number is consistent with the landing support frame 42 and the support arm 43 of the UAV. Each strength detection circuit is equipped with a ring enameled wire X, and the six enameled wires X (folded in half) are straightened and hot-melt welded to the outer ends of the landing support frame 42 and the support arm 43 (located on the surface of the landing support frame and the support arm); the detection circuit 1, the data transmission circuit 3, and the strength detection circuit 2 are installed on the circuit board in the component box of the UAV.

[0023] Figure 1 , 2As shown in , 3, 4, 5, and 6, the data analysis unit can also analyze the flight speed, flight altitude, meteorological data, and video data collected by the drone. When the flight speed and flight altitude are obviously too high or too low, the flight area meteorological data deviates too much from the flight area meteorological data on the network, and the flight area terrain data deviates too much from the flight area terrain data on the network, the data security judgment unit will alarm the flight control end operator, indicating that the drone itself or the sensors it carries are faulty, and the drone has yaw, etc. The database unit stores the highest and lowest working speed data of multiple lifting motors of the drone, the signal voltage data output by the pressure sensor A3 after the drone lands, the lowest and maximum voltage data output by the DC generator F when the drone flies forward and backward, and the lowest and maximum voltage data output by the detection circuit when the drone rises and falls. The data security judgment unit prompts the flight control end operator in the form of screen display and alarm sound. The magnet of the generator M is located in the inner circle of the coil, and the outer side of the magnet and the inner side of the coil are separated by a certain distance (2 mm). The force-bearing surface of the upper pressure resistor RT1 at the upper and lower ends of the right side of the support seat is located at the lower side, the force-bearing surface of the lower pressure resistor RT2 is located at the upper side, and the upper side of the upper rubber pad 53 and the lower side of the lower rubber pad 53 are in contact with the force-bearing surfaces of the upper pressure resistor RT1 and the lower pressure resistor RT2 respectively. The detection circuit includes two resistors R4 and R5 connected by circuit board wiring, and connected to the two pressure resistors RT1 and RT2 by wires, one end of the two pressure resistors RT1 and RT2 is connected, and the other ends of the two pressure resistors RT1 and RT2 are connected to one end of the two resistors R4 and R5 respectively. Each strength detection circuit includes transistors Q1 and Q2, resistors R6 and R7 connected via circuit board wiring, and are connected to the enameled wire X via a wire. One end of the first resistor R6 is connected to one end of the second resistor R7 and the emitter of the first transistor Q2. The other end of the first resistor R6 is connected to the base of the second transistor Q1 and the head end of the enameled wire X. The end of the enameled wire X is connected to the emitter of the second transistor Q1. The collector of the second transistor Q2 is connected to the other end of the second resistor R7 and the base of the first transistor Q2. The data transmission circuit includes a single-chip computer module A1, a 4G data transmission module A2, resistors R1 (there are four resistors R1), R2, R3, R9, R8 (there are six resistors R8), and diodes VD1, VD2, and VD3 (there are four diodes VD3); the power input terminals 1 and 2 of the single-chip computer module A1 and the 4G data transmission module A2 are respectively connected through wires, the four resistors R1 and the resistors R2, R3, and R9 are respectively connected to one end of the six resistors R8 and thirteen signal input terminals 12, 15, 16, 17, 13, 14, 9, 3, 4, 5, 6, 7, and 8 of the single-chip computer module through wires, and the other ends of three resistors R1, R2, and R3 are connected to the negative electrodes of three diodes VD3, VD1, and VD2 (one end of the four resistors R1 is connected to the negative electrodes of the four diodes VD3, respectively). Figure 6 Among them, the resistance values ​​of resistors R1, R2, R3, R4, R5, R8, and R9 are 10K; the resistance values ​​of resistors R6 and R7 are 330K and 47K respectively; the model of transistor Q1 is 9013 (NPN); the model of transistor Q2 is 9012 (PNP); the model of diodes VD1, VD2, and VD3 is 1N4007; the generator M is a small AC 5V generator; the generator F is an axial flow 5V DC generator; the pressure resistors RT1 and RT2 are high-precision resistance strain gauges of model BF350-3AA; the pressure sensor A3 is a resistance strain pressure sensor of model HZC-H1; the model of the main control chip of the microcontroller module A1 is STM32F103C8T6; the model of the 4G data transmission module A2 is DX-CT511.

[0024] Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, the positive power output end of the battery G1 of the drone and the other end of the pressure resistors RT1 and RT2 of the ascending and descending detection mechanisms are connected via wires, and the positive and negative power output ends of the battery G1 and the power input ends 1 and 2 of the landing detection mechanism A3, the power input ends 1 and 2 of the single-chip module A1 of the data transmission circuit, and the power input ends of the transistor Q2 emitter and the transistor Q1 emitter of the six-way strength detection circuit are connected via wires. The negative power output end of the battery G1 of the drone and the other end of the resistors R4 and R5 are connected via wires. The positive power output end of the generator F (the negative power output end is connected to the negative pole of the battery G1) of the signal output end of the four-way speed detection mechanism and the positive poles of the four diodes VD3 are connected via wires, and the two power output ends of the generator F of the signal output end of the forward and backward flight detection mechanisms and the positive poles of the diodes VD1 and VD2 are connected via wires. The signal output end 3 of the landing detection mechanism A3 and the other end of the resistor R9 are connected via wires. One end of the resistors R4 and R5 is connected to the fourteenth signal input terminal 10 pin and the fifteenth signal input terminal 11 pin of the single chip computer module A1 via wires respectively.

[0025] The six transistor Q2 collectors and the other ends of the six resistors R8 at the signal output end of the strength detection circuit are connected via wires. The following content is representatively described by the working principle of one speed detection mechanism, the strength detection circuit and the data transmission circuit.

[0026] Figure 1 , 2As shown in , 3, 4, 5, and 6, after the power output by the battery G1 enters the power input end of the rising and falling detection mechanism, the landing detection mechanism A3, the data transmission circuit, and the six-way strength detection circuit, the above-mentioned mechanisms and circuits are powered on and work. When the four lifting motors 41 of the drone are powered on and work, the rotating shaft of the lifting motor 41 will drive the magnet of the AC generator M to rotate, and the coils of the four-way AC generator M will generate induced AC power. The AC power generated by the coils of the four-way AC generator M is converted into DC power through the half-wave rectification of the diode VD3, and then enters the 12, 15, 16, and 17 pins of the single-chip module A1 through the four resistors R1 for voltage reduction and current limiting. The higher the speed of the lifting motor, the higher the signal voltage entering the 12, 15, 16, and 17 pins of the single-chip module A1, and vice versa. The single-chip module A1 converts the input four-way analog voltage signal into a digital signal and outputs it to the 4G data transmission module A2, and the 4G data transmission module A2 transmits the data wirelessly. After the ascending and descending detection mechanism is powered on, when the flight control end issues a landing or ascending command for the drone, and the drone descends or ascends, due to the inertial effect and the action of the movable plate 52 on the airflow from bottom to top and from top to bottom, the movable plate 52 will move upward or downward, and then the upper or lower part of the left end of the movable plate 52 will compress the force-bearing surface of the force-sensitive resistor RT1 or RT2 respectively, and the resistance value of the force-sensitive resistor RT1 or RT2 becomes smaller. The power output by the battery G1 enters the 10th or 11th pin of the single-chip module A1 through the voltage division of the force-sensitive resistor RT1 and the resistor R4 or the voltage division of the force-sensitive resistor RT2 and the resistor R5. The faster the descent or ascent speed enters the 10th and 11th pins of the single-chip module A1, the higher the signal voltage is, and vice versa. The single-chip module A1 converts the two-way analog voltage signal into a digital signal and outputs it to the 4G data sending module A2, and the 4G data sending module A2 transmits the data wirelessly. After the forward and backward flight detection mechanisms work, when the flight control end issues a forward flight command for the drone and the drone flies forward, the blades of the DC generator F rotate clockwise, and the DC wind motor F outputs positive and negative power through a diode VD1 that is unidirectionally conducted and a resistor R2 that reduces the voltage and limits the current, and enters the 13th pin of the single-chip module A1; when the flight control end issues a backward flight command for the drone and the drone flies backward, the blades of the DC generator F rotate counterclockwise, and the DC wind motor F outputs negative and positive power through a diode VD2 that is unidirectionally conducted and a resistor R3 that reduces the voltage and limits the current, and enters the 14th pin of the single-chip module A1; the faster the flight speed, the higher the signal voltage entering the 13th or 14th pin of the single-chip module A2, and vice versa; the single-chip module A1 converts the two-way analog voltage signals into digital signals and outputs them to the 4G data transmission module A2, and the 4G data transmission module A2 transmits the data wirelessly.After the landing detection mechanism A3 is powered, when the UAV has not landed, the pressure on the force surface of the pressure sensor A3 is relatively low, and the voltage signal output from its 3rd pin is relatively low through the resistor R9 for voltage reduction and current limiting, and enters the 9th pin of the single-chip module A1; when the flight control end issues a landing command for the UAV and the UAV lands, the pressure on the force surface of the pressure sensor A3 is relatively large, and the voltage signal output from its 3rd pin is relatively high through the resistor R9 for voltage reduction and current limiting, and enters the 9th pin of the single-chip module A1; the single-chip module A1 converts the input analog voltage signal into a digital signal and outputs it to the 4G data sending module A2, and the 4G data sending module A2 transmits the data wirelessly. After the strength detection circuit is powered, when there is no support arm 43 or the landing gear 42 is cracked, the emitter and base of the transistor Q1 are short-circuited by the enameled wire X, so that the transistor Q1 is in the cut-off state, the transistor Q2 will not be turned on, and the 3rd or 4th, 5th, 6th, 7th, 8th pins of the single-chip module A1 will not input a high-level signal; when there is a support arm or a landing gear cracked, a corresponding straightened enameled wire X will be disconnected, so that the base and emitter of the transistor Q1 are no longer short-circuited, the transistor Q1 is turned on, the collector outputs a low level and enters the base of the transistor Q2, the transistor Q2 is turned on, the collector outputs a high level and enters the 3rd or 4th, 5th, 6th, 7th, 8th pins of the single-chip module A1 through the resistor R8 for voltage reduction and current limiting, the single-chip module A1 converts the input analog voltage signal into a digital signal and outputs it to the 4G data sending module A2, and the 4G data sending module A2 transmits the data wirelessly.

[0027] Figure 1 , 2, 3, 4, 5, and 6, the 4G data sending module A2 transmits a variety of data remotely, and after the data receiving unit receives the speed data of the four lifting motors 41 of the drone, the forward and backward flight data of the drone, the ascending and descending data of the drone, the landing support frame touching the ground data, and the structural damage data of the landing support frame 42 or the support arm 43 of the drone, the above data is initially processed and transmitted to the data analysis unit. The data analysis unit retrieves the data in the database unit based on artificial intelligence, analyzes the various data input by the data receiving unit, and analyzes the wireless command data issued by the operator of the drone flight control end through the wireless remote control mechanism. When the drone has abnormal speed of the lifting motor 41 (for example, the speed is too low) and forward flight (for example, there is no forward flight action or the flight speed is too slow or too fast) and backward flight (for example, there is no forward flight action or the flight speed is too slow or too fast), the data analysis unit will analyze the data in the database unit based on artificial intelligence, and analyze the various data input by the data receiving unit. When there are flight abnormalities (such as no backward flight action or too slow or too fast flight speed), ascent (such as no ascent action or too slow or too fast ascent speed) and descent (such as no descent action or too slow or too fast descent speed) abnormalities, abnormal ground contact of the landing support frame 42 (such as no ground contact action or too slow or too fast contact speed), or structural damage to the support arm 43 and the landing support frame, the relevant software unit of the flight control end will intelligently analyze a variety of data. When there are abnormalities in the data including the drone itself and the sensor data, the data security judgment unit can promptly display the text on the flight control display screen and issue an alarm sound to prompt the flight control end personnel to take corresponding measures (such as timely controlling the faulty drone to return or land on the ground, etc.), which provides strong technical support for the safe flight of the drone.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0029] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flight data safety monitoring system for an unmanned aerial vehicle, characterized in that: The invention comprises a data receiving unit, a database unit, a data analysis unit, a data safety judgment unit, a speed detection mechanism, an ascending and descending detection mechanism, a forward and backward flight detection mechanism, a landing detection mechanism, a detection circuit, a strength detection circuit, and a data transmission circuit; the data receiving unit, the database unit, the data analysis unit, and the data safety judgment unit are application software installed in the control system of the UAV flight control end; the data receiving unit can receive the speed data of multiple lifting motors of the UAV, forward and backward flight data, ascending and descending data, landing support frame touching the ground data, landing support frame and support wirelessly transmitted by the data transmission circuit The data of structural damage to the support arm is detected, and the data is transmitted to the data analysis unit after preliminary processing; the data analysis unit retrieves the data in the database unit based on artificial intelligence, analyzes the various data input by the data receiving unit, and combines the wireless command data issued by the UAV flight control operator through the wireless remote control mechanism. When the UAV has abnormal lifting motor speed, forward and backward flight, ascent and descent, landing support frame touching the ground, and structural damage to the support arm and landing support frame, the data security judgment unit can alarm and prompt the flight control operator; there are multiple sets of speed detection mechanisms, and the speed detection mechanism is an AC Generator, the magnet of the generator is fixedly mounted on the outside of the rotating shaft of the lifting motor, and the coil of the generator is fixedly mounted on the outside of the upper shell of the lifting motor; the forward and backward flight detection mechanism is a DC generator, which is fixedly mounted on the lower end of the UAV; the landing detection mechanism is a pressure sensor, the upper end of the pressure sensor is fixedly mounted on the lower end of the column of one of the landing support frames of the UAV, and the lower end of the pressure sensor is fixedly mounted on the upper end of the lower frame of the landing support frame; the rising and falling detection mechanism includes a support seat, a movable plate, and a pressure resistor, one side of the movable plate is rotatably mounted on one side of the support seat, and the other side of the movable plate is rotatably mounted on one side of the support seat Buffer pads are fixedly installed on the upper and lower sides of the end, two pressure resistors are fixedly installed on the upper and lower ends of the other side of the support seat, and the lower end of the support seat is installed outside the upper end of the UAV; there are multiple sets of strength detection circuits, each strength detection circuit is equipped with a detection line, and multiple detection lines are straightened and installed on the outer ends of the landing support frame and the support arm of the UAV; the detection circuit, data transmission circuit, and strength detection circuit are installed in the UAV electronic control box, and the speed detection mechanism, forward flight and backward flight detection mechanism, landing detection mechanism, detection circuit, signal output end of the strength detection circuit and the multi-channel signal input end of the data transmission circuit are electrically connected respectively.

2. The flight data safety monitoring system for an unmanned aerial vehicle according to claim 1, characterized in that: The data analysis unit can analyze the flight speed, flight altitude, meteorological data, and video data collected by the drone itself. When the flight speed or flight altitude is too high or too low, the meteorological data of the flight area deviates from the meteorological data of the flight area on the network, or the terrain data of the flight area deviates from the terrain data of the flight area on the network, the data security judgment unit can alarm to remind the flight control operator, the drone itself or the sensors it carries, and the drone is yawed.

3. The flight data safety monitoring system for an unmanned aerial vehicle according to claim 1, characterized in that: The database unit stores the maximum and minimum operating speed data of multiple lifting motors of the drone, the signal voltage data output by the pressure sensor after the drone lands, the minimum and maximum voltage data output by the DC generator when the drone flies forward and backward, and the minimum and maximum voltage data output by the detection circuit when the drone rises and descends.

4. The flight data safety monitoring system for an unmanned aerial vehicle according to claim 1, characterized in that: The data security judgment unit prompts the flight control end operator in the form of screen display and alarm sound.

5. The flight data safety monitoring system for an unmanned aerial vehicle according to claim 1, characterized in that: The magnet of the generator is located inside the inner circle of the coil, and the outer side of the magnet is spaced a distance from the inner side of the coil.

6. The flight data safety monitoring system for an unmanned aerial vehicle according to claim 1, characterized in that: The upper side of the upper buffer pad and the lower side of the lower buffer pad in the support seat are in contact with the force-bearing surfaces of the upper and lower pressure resistors respectively.

7. The flight data safety monitoring system for an unmanned aerial vehicle according to claim 1, characterized in that: The detection circuit includes two electrically connected resistors and is connected to the two pressure resistors. One ends of the two pressure resistors are connected, and the other ends of the two pressure resistors are respectively connected to one ends of the two resistors.

8. The flight data safety monitoring system for an unmanned aerial vehicle according to claim 1, characterized in that: The strength detection circuit includes an electrically connected transistor and a resistor, and is connected to a detection line. One end of the first resistor is connected to one end of the second resistor and the emitter of the first transistor, the other end of the first resistor is connected to the base of the second transistor and the beginning of the detection line, the end of the detection line is connected to the emitter of the second transistor, and the collector of the second transistor is connected to the other end of the second resistor and the base of the first transistor.

9. The flight data safety monitoring system for an unmanned aerial vehicle according to claim 1, characterized in that: The data transmission circuit includes an electrically connected single-chip microcomputer module, a 4G data transmission module, a resistor, and a diode. The power input terminals of the single-chip microcomputer module and the 4G data transmission module are connected, thirteen resistors are respectively connected to thirteen signal input terminals 1 of the single-chip microcomputer module, and the other ends of three of the resistors are connected to the negative electrodes of three diodes.

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