Unmanned aerial vehicle servo system detection device with alternating current and direct current switching power supply function

Abstract

The embodiment of the utility model relates to the technical field of servo detection, and discloses an unmanned aerial vehicle servo system detection device with an alternating current and direct current switching power supply function, which comprises an alternating current and direct current conversion module, a direct current power supply conversion module, an alternating current filtering protection circuit, a direct current filtering protection circuit and a digital control center, the output end of the alternating current filtering protection circuit is connected with the input end of the alternating current-direct current conversion module, the output end of the alternating current-direct current conversion module is connected with the first input end of the three-state switch, the output end of the direct current filtering protection circuit is connected with the second input end of the three-state switch, and the input end of the direct current power supply conversion module is connected with the output end of the three-state switch. The output end of the direct-current power supply conversion module is connected with the digital control center; the three-state switch is added, alternating-current and direct-current power supplies can be connected at the same time, equipment cannot be burnt out, and the problem that an original unmanned aerial vehicle servo system detection device cannot detect the whole servo system, that is, laboratory use and external field use cannot be considered at the same time is solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of servo detection technology, and in particular to a drone servo system detection device with AC / DC switching power supply function. Background Art

[0002] There are many types of UAV servo equipment, including wing servos, damper regulators, airway regulators, door drives, front lift and retraction devices, skid retraction actuators, front wheel steering servos, etc. However, the mature UAV servo detection devices are designed for a single device and cannot be applied to the entire servo system, and cannot detect different types of servo equipment.

[0003] The power supply methods of the UAV servo detection device are divided into DC power supply and AC power supply. The DC power supply device is used for laboratory desktop experiments, and the AC power supply device is used for field ground experiments. The UAV servo system detection device that has been maturely used in the industry cannot be used in the laboratory and the field at the same time. Utility Model Content

[0004] The purpose of the embodiment of this application is to provide a UAV servo system detection device with AC-DC switching power supply function, aiming to solve the technical problem that the industry's servo detection device cannot detect the entire servo system and cannot take into account both the laboratory and the field use. This application integrates multiple device interfaces and communication interfaces, and sets a three-state switch. Through switching of the adapter cable, the entire servo system can be detected, and the laboratory and field use can be taken into account both the laboratory and field use.

[0005] To solve the above technical problems, the embodiment of the present application provides a UAV servo system detection device with AC-DC switching power supply function, including: a power supply filter protection conversion circuit, a three-state switch and a digital control center; the power supply filter protection conversion circuit includes an AC-DC conversion module, a DC-DC power conversion module, an AC-DC filter protection circuit and a DC-DC filter protection circuit; the output end of the AC-DC filter protection circuit is connected to the input end of the AC-DC conversion module, the output end of the AC-DC conversion module is connected to the first input end of the three-state switch, the output end of the DC-DC filter protection circuit is connected to the second input end of the three-state switch, the input end of the DC-DC power conversion module is connected to the output end of the three-state switch, the input end of the DC-DC power conversion module is connected to the output end of the three-state switch, and the The output end of the DC power conversion module is connected to the digital control center; the AC filter protection circuit is used to filter out interference and burrs of AC signals, the AC DC conversion module is used to convert the AC signal into a DC signal, the DC filter protection circuit is used to filter out interference and burrs of DC signals, the three-state switch is used to switch the DC signal connected to the DC signal outputted by the AC DC conversion module or the DC signal outputted by the DC filter protection circuit, and the DC power conversion module converts the DC signal outputted by the three-state switch into the voltage signal required by the UAV servo system detection device; the digital control center is used to detect the UAV servo system based on the voltage signal required by the UAV servo system detection device.

[0006] The embodiment of this application provides a drone servo system detection device with AC-DC switching power supply function. Adding a three-state switch can simultaneously connect to AC-DC power supply without burning the equipment. At the same time, using a three-state switch can flexibly switch the power required for the drone servo system detection device; among them, the DC voltage-regulating power supply generally has current-limited protection, which can prevent personal injury caused by accidental short circuit and overcurrent. However, the DC voltage-regulating power supply is generally inconvenient to carry due to its own weight and is only suitable for use in a laboratory. When used in an external field, the power outlet is generally far away from the onboard equipment, so an AC cable of appropriate length can be used to easily power the equipment. Since this application integrates multiple device interfaces and communication interfaces, the entire servo system can be detected by switching the adapter cable. This application overcomes the problem that the original UAV servo system detection device cannot detect the entire servo system, that is, it cannot take into account both laboratory and field use.

[0007] In some alternative embodiments, the device further comprises an analog quantity generation circuit, which consists of a high-speed operation amplifier, several resistors, and several capacitors; the input end of the analog quantity generation circuit is connected to the digital control center through a DA interface of the peripheral device of the digital control center; the analog quantity generation circuit is used to adjust the amplitude of the signal output by the digital control center.

[0008] In some alternative embodiments, the device further comprises an analog quantity receiving circuit, which consists of a height AD conversion chip, several resistors and several capacitors; the output end of the analog quantity receiving circuit is connected to the digital control center through a first SPI interface of the peripheral of the digital control center; the analog quantity receiving circuit is used to receive a feedback signal and send the feedback signal to the digital control center.

[0009] In some alternative embodiments, the device further comprises a CAN transceiver circuit, the CAN transceiver circuit consisting of a high-speed CAN interface chip, several resistors, several capacitors and transient suppression diodes, the CAN transceiver circuit is connected to the digital control center through a CAN interface of the peripheral device of the digital control center; the CAN transceiver circuit is used to send bus control instructions and receive bus feedback data, and the transient suppression diode is used to prevent abnormal input of the digital control center from destroying the drone servo system detection device.

[0010] In some alternative embodiments, the device further includes a current detection circuit, the current detection circuit includes a precision Hall current sensor and a precision rail-to-rail operational amplifier; the output end of the current detection circuit is connected to the digital control center through an AD interface of the peripheral AD interface of the digital control center; the precision Hall current sensor is used to isolate the current detection circuit and the measured circuit; the precision rail-to-rail operational amplifier is used to condition and isolate the signal measured by the current detection circuit to transmit to the digital control center.

[0011] In some optional embodiments, the device also includes a digital display module, which includes an OLED display screen and a peripheral control circuit board; the input end of the digital display module is connected to the digital control center through a second SPI interface of the peripheral of the digital control center; the digital display module is used to display the detection equipment, equipment status, control signal type and control results.

[0012] In some optional embodiments, the device also includes a keyboard input module, which includes a number of membrane switch buttons; the output end of the keyboard input module is connected to the digital control center through the IO interface of the peripheral of the digital control center; the keyboard input module is used to provide control input for the servo system of the drone being detected.

[0013] In some optional embodiments, the digital control center is composed of an ARM chip and peripheral circuits, and is provided with an AD interface, a DA interface, a CAN interface, an SPI interface, and an IO interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] One or more embodiments are exemplarily described by the pictures in the corresponding drawings, and these exemplary descriptions do not constitute limitations on the embodiments.

[0015] Figure 1 It is a structural block diagram of a UAV servo system detection device with AC / DC switching power supply function provided by an embodiment of the utility model;

[0016] In the figure: 1. Power supply filter protection conversion circuit; 2. Three-state switch; 3. Digital control center; 4. Analog generation circuit; 5. Analog reception circuit; 6. CAN transceiver circuit; 7. Current detection circuit; 8. Digital display module; 9. Keyboard input module; AC, AC current; DC, DC current; F1. AC filter protection circuit; F2. DC filter protection circuit; AC / DC, AC / DC conversion module; DC / DC, DC power conversion module; S, three-state switch; I / V, precision Hall current sensor; A1. Precision rail-to-rail operation amplifier; A2. High-speed operation amplifier; V FB , feedback signal; ADC, high-speed AD conversion circuit; CANTR, high-speed CAN interface chip; KB, keyboard input module; P, OLED display; V c , control signal; CPU, ARM chip. DETAILED DESCRIPTION

[0017] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not be construed as any limitation, and the various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0018] The structural block diagram of a UAV servo system detection device with AC / DC switching power supply function in this embodiment can be shown as follows Figure 1It is shown, including: power supply filter protection conversion circuit 1, three-state switch 2, digital control center 3, analog quantity generation circuit 4, analog quantity reception circuit 5, CAN transceiver circuit 6, current detection circuit 7, digital display module 8 and keyboard input module 9; the power supply filter protection conversion circuit 1 includes an AC-DC conversion module, a DC power conversion module, an AC filter protection circuit and a DC filter protection circuit; the digital control center 3 is composed of an ARM chip and a peripheral circuit, and is equipped with an AD interface, a DA interface, a CAN interface, a SPI interface, and an IO interface; the analog quantity generation circuit 4 It consists of a high-speed operational amplifier, several resistors and several capacitors; the analog reception circuit 5 is composed of a high-AD conversion chip, several resistors and several capacitors; the CAN transceiver circuit 6 is composed of a high-speed CAN interface chip, several resistors, several capacitors and transient suppression diode; the current detection circuit 7 includes an op amp conditioning circuit, the op amp conditioning circuit includes a precision Hall current sensor and a precision rail-to-rail operational amplifier; the digital display module 8 includes an OLED display screen and a peripheral control circuit board; the keyboard input module 9 includes a number of thin-film switch buttons.

[0019] The output end of the AC filter protection circuit is connected to the input end of the AC-DC conversion module, the output end of the AC-DC conversion module is connected to the first input end of the three-state switch 2, the output end of the DC filter protection circuit is connected to the second input end of the three-state switch 2, the input end of the DC power conversion module is connected to the output end of the three-state switch 2, and the output end of the DC power conversion module is connected to the digital control center 3; wherein the AC filter protection circuit is used to filter out interference and burrs of AC signals, and the AC-DC conversion module is It is used to convert an AC signal into a DC signal. The DC filter protection circuit is used to filter out interference and burrs of the DC signal. The three-state switch 2 is used to switch the DC signal output by the AC-DC conversion module or the DC signal output by the DC filter protection circuit. The DC power conversion module converts the DC signal output by the three-state switch 2 into the voltage signal required by the drone servo system detection device; the digital control center 3 is used to detect the drone servo system based on the voltage signal required by the drone servo system detection device.

[0020] It should be noted that the power supply filtering protection conversion circuit 1 also includes a plurality of capacitors, a plurality of resistors, a plurality of inductors, a transient suppression diode and a self-resetting fuse.

[0021] In one example, the input end of the analog quantity generating circuit 4 is connected to the digital control center via a DA interface of a peripheral device of the digital control center; the analog quantity generating circuit 4 is used to adjust the amplitude of the signal output by the digital control center.

[0022] It should be noted that since the DA interface of the peripheral device of the digital control center 3 can convert the digital signal into an analog signal, but the amplitude of the converted analog signal is limited and cannot meet the control needs. In addition, the embodiment of this application sets an analog quantity generation circuit 4 to adjust the amplitude of the analog signal, and at the same time isolate the output signal from the internal circuit of the drone servo system detection device to prevent abnormal input from occurring at the output end, thereby causing damage to the drone servo system detection device.

[0023] In one example, the output end of the analog quantity receiving circuit 5 is connected to the digital control center via the first SPI interface of the peripheral of the digital control center; the analog quantity receiving circuit 5 is used to receive the feedback signal and send the feedback signal to the digital control center.

[0024] It should be noted that since the AD interface of the peripheral device of the digital control center 3 can convert analog signals into digital signals, the conversion accuracy and conversion speed of the AD interface of the peripheral device of the digital control center 3 are low, and the amplitude of the acquisition of the analog signal is limited. In the embodiment of the present application, the analog value is set to a high-speed AD conversion chip in the analog value receives feedback signals, and after acquisition, the feedback signal is transmitted to the digital control center 3 through the first SPI interface of the peripheral device of the digital control center 3.

[0025] In one example, the CAN transceiver circuit 6 is connected to the digital control center through the CAN interface of the peripheral of the digital control center; the CAN transceiver circuit is used to send bus control instructions and receive bus feedback data, and the transient suppression diode is used to prevent abnormal input of the digital control center from damaging the drone servo system detection device.

[0026] It should be noted that the high-speed CAN interface chip used in the embodiment of the present application is a high-speed CAN interface chip with input and output isolation, so as to prevent disturbances at the input end from affecting the reliability of the drone servo system detection device.

[0027] In one example, the output end of the current detection circuit 7 is connected to the digital control center through the AD interface of the peripheral AD interface of the digital control center; the precision Hall current sensor in the current detection circuit is used for current voltage conversion, and isolates the current detection circuit and the circuit to be measured; the precision rail-to-rail operation amplifier is used to condition and isolate the signal measured by the current detection circuit and then transmit it to the digital control center.

[0028] It should be noted that the circuit under test refers to the circuit of the drone servo system under test. The precision Hall current sensor isolates the current detection circuit from the circuit under test to avoid interference of the circuit under test on the current detection circuit.

[0029] In one example, the input end of the digital display module 8 is connected to the digital control center 3 via the second SPI interface of the peripheral of the digital control center 3; the digital display module 8 is used to display the detection device, device status, control signal type and control result.

[0030] It should be noted that, since the implementer needs to monitor the detection equipment, equipment status, control signal type and control results when testing the drone servo system, and then set the digital display module 8, the digital display module 8 can ensure that the displayed data is stable, effective and not interfered with, and at the same time avoid electromagnetic radiation to the drone servo system being tested, causing errors in the test results.

[0031] In one example, the output end of the keyboard input module 9 is connected to the digital control center 3 via an IO interface of a peripheral device of the digital control center 3; the keyboard input module 9 is used to provide control input for the servo system of the detected drone.

[0032] It should be noted that, in the embodiment of the present application, the signal input from the keyboard input module to the digital control center is a low open signal.

[0033] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A drone servo system detection device with AC / DC switching power supply function, characterized in that: The device comprises: a power supply filtering protection conversion circuit, a three-state switch and a digital control center; The power supply filtering protection conversion circuit comprises an AC-DC conversion module, a DC power supply conversion module, an AC filtering protection circuit and a DC filtering protection circuit; The output end of the AC filter protection circuit is connected to the input end of the AC-DC conversion module, the output end of the AC-DC conversion module is connected to the first input end of the three-state switch, the output end of the DC filter protection circuit is connected to the second input end of the three-state switch, the input end of the DC power conversion module is connected to the output end of the three-state switch, and the output end of the DC power conversion module is connected to the digital control center; The AC filter protection circuit is used to filter out interference and burrs of the AC signal, the AC-DC conversion module is used to convert the AC signal into a DC signal, the DC filter protection circuit is used to filter out interference and burrs of the DC signal, the three-state switch is used to switch the DC signal output by the AC-DC conversion module or the DC signal output by the DC filter protection circuit, and the DC power conversion module converts the DC signal output by the three-state switch into a voltage signal required by the drone servo system detection device; The digital control center is used to detect the drone servo system based on the voltage signal required by the drone servo system detection device.

2. The unmanned aerial vehicle servo system detection device with AC / DC switching power supply function according to claim 1, characterized in that: The device also includes an analog quantity generating circuit, which is composed of a high-speed operational amplifier, a plurality of resistors and a plurality of capacitors; the input end of the analog quantity generating circuit is connected to the digital control center through a DA interface of a peripheral of the digital control center; the analog quantity generating circuit is used to adjust the amplitude of the signal output by the digital control center.

3. The unmanned aerial vehicle servo system detection device with AC / DC switching power supply function according to claim 1, characterized in that: The device also includes an analog quantity receiving circuit, which is composed of a high-resolution AD conversion chip, a plurality of resistors and a plurality of capacitors; the output end of the analog quantity receiving circuit is connected to the digital control center through the first SPI interface of the peripheral of the digital control center; the analog quantity receiving circuit is used to receive a feedback signal and send the feedback signal to the digital control center.

4. The drone servo system detection device with AC / DC switching power supply function according to claim 1, characterized in that: The device also includes a CAN transceiver circuit, which is composed of a high-speed CAN interface chip, a plurality of resistors, a plurality of capacitors and a transient suppression diode. The CAN transceiver circuit is connected to the digital control center through the CAN interface of the peripheral of the digital control center; the CAN transceiver circuit is used to send bus control instructions and receive bus feedback data, and the transient suppression diode is used to prevent abnormal input of the digital control center from damaging the drone servo system detection device.

5. The unmanned aerial vehicle servo system detection device with AC / DC switching power supply function according to claim 1, characterized in that: The device also includes a current detection circuit, which includes a precision Hall current sensor and a precision rail-to-rail operational amplifier; the output end of the current detection circuit is connected to the digital control center through an AD interface of the peripheral of the digital control center; the precision Hall current sensor is used to isolate the current detection circuit and the circuit under test; the precision rail-to-rail operational amplifier is used to condition and isolate the signal measured by the current detection circuit and transmit it to the digital control center.

6. The unmanned aerial vehicle servo system detection device with AC / DC switching power supply function according to claim 1, characterized in that: The device also includes a digital display module, which includes an OLED display screen and a peripheral control circuit board; the input end of the digital display module is connected to the digital control center through the second SPI interface of the peripheral of the digital control center; the digital display module is used to display the detection equipment, equipment status, control signal type and control results.

7. The drone servo system detection device with AC / DC switching power supply function according to claim 1, characterized in that: The device also includes a keyboard input module, which includes a plurality of membrane switch buttons; the output end of the keyboard input module is connected to the digital control center through the IO interface of the peripheral of the digital control center; the keyboard input module is used to provide control input for the servo system of the drone being detected.

8. A drone servo system detection device with AC / DC switching power supply function according to any one of claims 1 to 7, characterized in that: The digital control center is composed of an ARM chip and peripheral circuits, and is externally provided with an AD interface, a DA interface, a CAN interface, a first SPI interface, a second SPI interface and an IO interface.

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