A drone countermeasure terminal and charging control circuit

Abstract

This utility model discloses a drone countermeasure terminal and charging control circuit, including a charging management chip, a filtering circuit, and an interlocking circuit. The filtering circuit is disposed at the input terminal of the charging management chip and includes a common-mode inductor, a first filtering capacitor, and a second filtering capacitor. The common-mode inductor is connected in series with the input terminal of the charging management chip, and the first filtering capacitor is connected in parallel with the input and output terminals of the common-mode inductor. The interlocking circuit is connected to the input terminal of the charging management chip and is used to disconnect the input power supply of the charging management chip when the countermeasure unit is activated. Therefore, the interlocking circuit can automatically cut off battery charging when performing drone countermeasures, thereby protecting battery safety. Furthermore, the filtering circuit can effectively filter electromagnetic interference, further ensuring that the battery charging input is not affected by electromagnetic interference generated during countermeasures.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a UAV countermeasure terminal and charging control circuit. Background Technology

[0002] In the field of electronic device power supply, charging circuits are the core components that ensure battery life. Currently, general-purpose charging circuits mainly focus on managing parameters such as charging current and voltage, and use charging management chips and protective resistors to achieve current regulation and overcharge protection, ensuring basic charging safety.

[0003] However, existing general-purpose charging circuits have a key flaw: a lack of active charging status control. When the battery is fully charged or the device no longer needs charging, the charging circuit cannot be automatically disconnected, requiring manual disconnection of the power supply. While this has little impact on ordinary devices, it poses a serious threat to drone detection and countermeasure systems. When a drone detection and countermeasure system performs a countermeasure operation, it generates strong electromagnetic radiation to interfere with the drone. If the battery is still charging (the charging power supply is not disconnected), the existing charging circuit, lacking electromagnetic protection design, allows this strong electromagnetic radiation to intrude into the charging management circuit, interfering with the normal operation of the chip, causing abnormal charging and discharging, and even damaging semiconductor components, resulting in permanent circuit damage. This, in turn, affects system stability, shortens lifespan, and in extreme cases, may lead to the failure of the countermeasure mission. Utility Model Content

[0004] In view of the above problems, this application provides a drone countermeasure terminal and charging control circuit to solve the technical problem of needing to manually disconnect battery charging during countermeasures.

[0005] To achieve the above objectives, this application provides a charging control circuit for a drone countermeasure terminal. The drone countermeasure terminal includes a detection unit, a countermeasure unit, and a battery. The detection unit is used to detect drones, and the countermeasure unit is used to counter the drone, causing it to return to its home base or make an emergency landing. The battery is used to power the drone countermeasure terminal. The charging control circuit for the drone countermeasure terminal includes:

[0006] A charging management chip, connected to the input power supply and the battery, is used to control the charging current of the battery;

[0007] A filtering circuit is provided at the input terminal of the charging management chip, including a common-mode inductor, a first filtering capacitor, and a second filtering capacitor; the common-mode inductor is connected in series at the input terminal of the charging management chip, and the first filtering capacitor and the second filtering capacitor are connected in parallel at the input terminal and the output terminal of the common-mode inductor;

[0008] An interlock circuit, connected to the input terminal of the charging management chip, is used to disconnect the input power supply of the charging management chip when the countermeasure unit is activated.

[0009] Furthermore, it also includes a DC-DC circuit, the input terminal of which is connected to an input power supply, and the output terminal of which is connected to the interlock circuit, for supplying power to the interlock circuit.

[0010] Furthermore, the interlock circuit includes a first transistor, a second transistor, and a MOSFET;

[0011] The base of the second transistor is the interlock signal input terminal; the collector of the second transistor is connected to the base of the first transistor, the collector of the first transistor is connected to the gate of the MOS transistor, and the source and drain of the MOS transistor are connected in series to the input terminal of the filter circuit.

[0012] Furthermore, the interlock circuit also includes a current-limiting resistor, one end of which is connected to the control input terminal of the countermeasure unit, and the other end of which is connected to the base of the second transistor.

[0013] Furthermore, it also includes a manual switch, which is connected in series with the input terminal of the charging management chip and is used to manually disconnect the input terminal of the charging management chip.

[0014] To address the aforementioned technical problems, this application also provides another technical solution:

[0015] A drone countermeasure terminal includes a detection unit, a countermeasure unit, and a battery. The battery is connected to a charging control circuit, which is the drone countermeasure terminal charging control circuit described in any of the above technical solutions.

[0016] Unlike existing technologies, the above-mentioned UAV countermeasure terminal charging control circuit includes a charging management chip, a filtering circuit, and an interlocking circuit. The charging management chip controls the charging current of the battery. The filtering circuit is located at the input terminal of the charging management chip and includes a common-mode inductor, a first filtering capacitor, and a second filtering capacitor. The common-mode inductor is connected in series with the input terminal of the charging management chip, and the first filtering capacitor is connected in parallel with the input and output terminals of the common-mode inductor. The interlocking circuit is connected to the input terminal of the charging management chip and is used to disconnect the input power supply of the charging management chip when the countermeasure unit is activated. Therefore, the interlocking circuit can automatically cut off battery charging during UAV countermeasures, thereby protecting battery safety. Furthermore, the filtering circuit can effectively filter electromagnetic interference, further ensuring that the battery charging input is not affected by electromagnetic interference generated during countermeasures.

[0017] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0018] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0019] In the accompanying drawings of the instruction manual:

[0020] Figure 1 A circuit diagram of the drone countermeasure terminal charging control circuit described in a specific implementation method; Detailed Implementation

[0021] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0022] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0023] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0024] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0025] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0026] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0027] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0028] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0029] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0030] Please see Figure 1 This embodiment provides a charging control circuit for a drone countermeasure terminal. The drone countermeasure terminal includes a detection unit, a countermeasure unit, and a battery. The detection unit detects the drone, and the countermeasure unit emits a countermeasure signal to counter the drone, causing it to return to its home base or make a forced landing. The battery powers the drone countermeasure terminal. Both the detection unit and the countermeasure unit employ conventional techniques in the art, and this application does not modify the detection unit or the countermeasure unit.

[0031] like Figure 1 As shown, the drone countermeasure terminal charging control circuit includes: a charging management chip U1, a filtering circuit, and an interlocking circuit.

[0032] The charging management chip U1 is connected to the input power supply VIN and the battery, and is used to control the charging current of the battery. A filter circuit is located at the input terminal of the charging management chip U1, and the input power supply VIN flows into the charging management chip U1 after passing through the filter circuit. The charging management chip U1 includes a common-mode inductor L1, a first filter capacitor C3, and a second filter capacitor C4; the common-mode inductor L1 is connected in series at the input terminal of the charging management chip U1, and the first filter capacitor C3 and the second filter capacitor C4 are connected in parallel at the input and output terminals of the common-mode inductor.

[0033] An interlock circuit is connected to the input terminal of the charging management chip U1. The interlock circuit is used to disconnect the input power supply of the charging management chip when the countermeasure unit is activated. The interlock circuit includes a current-limiting resistor R6, a first transistor Q2, a second transistor Q3, and a MOSFET Q1. The base of the second transistor Q3 is the interlock signal input terminal. One end of the current-limiting resistor R6 is connected to the control input terminal of the countermeasure unit, i.e., to the PA.2 pin of the MCU, and the other end of the current-limiting resistor is connected to the base of the second transistor Q3. The collector of the second transistor Q3 is connected to the base of the first transistor Q2, and the collector of the first transistor is connected to the gate of the MOSFET Q1. The source and drain of the MOSFET Q1 are connected in series to the input terminal of the filter circuit.

[0034] In this embodiment, U2 is an MCU (i.e., a control chip). The PA.2 pin of the MCU is connected to the countermeasure unit and is used to control the countermeasure unit to be turned on or off. The PA.3 pin of the MCU is connected to the detection unit and is used to control the detection unit to be turned on or off.

[0035] When the drone countermeasure terminal charging control circuit is working normally, the MCU's PA.3 pin will output a high level, thereby turning on the detection unit to detect the drone signal. At this time, the MCU's PA.2 pin outputs a low level, which turns off the second transistor Q3 in the interlock circuit. The collector of the second transistor Q3 is at a high level, that is, the base of the first transistor Q2 is at a high level, and the first transistor Q2 is turned on. The collector of the first transistor Q2 is then at a low level. At this time, a voltage difference is formed between the gate and source of the MOSFET Q1, and Q1 is turned on. The input power supply VIN is then input to the input terminal of the charging management chip U1, and the charging management chip U1 charges the battery.

[0036] When the terminal detects an unauthorized intrusion of a drone, the PA.3 pin of the MCU outputs a low level to disable the detection unit. Simultaneously, the PA.2 pin outputs a high level to activate the countermeasure unit, enabling countermeasures against the drone, such as forcing it to land or driving it away. At this time, the base input of the second transistor Q3 is high, turning it on. This causes the collector of the second transistor Q3 to be low, meaning the base input of the first transistor Q2 is low, turning it off. The collector of the first transistor Q2 is high, causing the MOSFET Q1 to also be off. Therefore, the input of the charging management chip U1 has no voltage level, stopping battery charging. Thus, in this embodiment, an interlock circuit is added to the existing drone countermeasure terminal. Therefore, without changing the control software and steps, drone countermeasures and battery charging interlock can be achieved purely in hardware. During countermeasures, the interlock circuit automatically disconnects battery charging, preventing battery damage caused by forgetting to disconnect the power in the current manual power-off solution.

[0037] In addition, to ensure that the battery charging input is not affected by electromagnetic interference generated during countermeasures, a common-mode inductor and capacitor are added to the power input terminal of the battery charging management chip for filtering. Specifically, C3, C4, and L1 in the circuit form a filtering circuit, where L1 is a common-mode inductor.

[0038] like Figure 1 As shown, in this embodiment, the drone countermeasure terminal charging control circuit further includes a DC-DC circuit U3. The input terminal of the DC-DC circuit U3 is connected to the input power supply VIN, and the output terminal is connected to the interlock circuit and the MCU, for powering the interlock circuit and the MCU.

[0039] The VIN level is converted to the VCC level required by the MCU and interlock circuit through the DC-DC circuit U3.

[0040] In some embodiments, the charging control circuit of the UAV countermeasure terminal is further provided with a manual switch, which is connected in series with the input terminal of the charging management chip and is used to manually disconnect the input terminal of the charging management chip. That is, in this embodiment, the input terminal of the charging management chip is provided with two power-off schemes: a manual switch and an interlock circuit. The input terminal of the charging management chip can be manually disconnected by the manual switch, and the interlock circuit will also automatically disconnect the input terminal of the charging management chip when the countermeasure unit is activated, thereby achieving dual protection.

[0041] In another embodiment, a drone countermeasure terminal is provided, which includes a detection unit, a countermeasure unit, and a battery. The battery is connected to a charging control circuit, which is the drone countermeasure terminal charging control circuit described in the above embodiment.

[0042] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A drone countermeasure terminal charging control circuit, characterized by, The drone countermeasure terminal includes a detection unit, a countermeasure unit, and a battery. The detection unit is used to detect drones, the countermeasure unit is used to counter the drones, causing the drones to return to their home base or make an emergency landing, and the battery is used to power the drone countermeasure terminal. The drone countermeasure terminal charging control circuit includes: A charging management chip, connected to the input power supply and the battery, is used to control the charging current of the battery; A filtering circuit is provided at the input terminal of the charging management chip, including a common-mode inductor, a first filtering capacitor, and a second filtering capacitor; the common-mode inductor is connected in series at the input terminal of the charging management chip, and the first filtering capacitor and the second filtering capacitor are connected in parallel at the input terminal and the output terminal of the common-mode inductor; An interlock circuit, connected to the input terminal of the charging management chip, is used to disconnect the input power supply of the charging management chip when the countermeasure unit is activated.

2. The UAV countermeasure terminal charging control circuit of claim 1, wherein, It also includes a DC-DC circuit, the input of which is connected to an input power supply and the output of which is connected to the interlock circuit, for supplying power to the interlock circuit.

3. The UAV countermeasure terminal charging control circuit of claim 1, wherein, The interlock circuit includes a first transistor, a second transistor, and a MOSFET; The base of the second transistor is the interlock signal input terminal; the collector of the second transistor is connected to the base of the first transistor, the collector of the first transistor is connected to the gate of the MOS transistor, and the source and drain of the MOS transistor are connected in series to the input terminal of the filter circuit.

4. The UAV countermeasure terminal charging control circuit of claim 3, wherein, The interlock circuit also includes a current-limiting resistor, one end of which is connected to the control input terminal of the countermeasure unit, and the other end of which is connected to the base of the second transistor.

5. The drone countermeasure terminal charging control circuit of claim 1, wherein, It also includes a manual switch, which is connected in series with the input terminal of the charging management chip and is used to manually disconnect the input terminal of the charging management chip.

6. A UAV countermeasure terminal, comprising: It includes a detection unit, a countermeasure unit, and a battery, wherein the battery is connected to a charging control circuit, and the charging control circuit is the UAV countermeasure terminal charging control circuit as described in any one of claims 1-5.

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