An animal repelling device

Abstract

The present invention discloses a harmful animal repelling device, belonging to the technical field of electric power, which includes a control host and several playback extenders. All the playback extenders are connected to the control host through a three-wire data bus, solving the technical problem of using one host to control several playback extenders to play repelling audio. The present invention uses a three-wire bus to drive several extenders, with simple wiring and reduced installation costs. The present invention adopts a structure of using one control host to control several playback extenders. The main devices for playing audio are arranged in the control host, and only components such as amplifiers and speakers are arranged in the playback extenders, greatly reducing the cost of the playback extenders and simplifying maintenance. The present invention can place the control host indoors and only place the playback extenders with low cost outdoors, which can well extend the service life of the control host and reduce the maintenance cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power and relates to a harmful animal repelling device. Background Art

[0002] Small animals pose great harm to substations. Especially, birds will build nests and perch on antenna towers, often leading to faults such as a decline in the insulation performance of insulators, grounding, short - circuit, and flashover. In severe cases, it will endanger the safe operation of power equipment, cause power line faults and power outages. This not only causes significant losses to the operation and maintenance units in terms of manpower and material resources, but more importantly, seriously threatens the safe operation of the power grid.

[0003] Using sound and light to repel small animals is an effective method. Currently, each small animal repelling device needs to be placed at a certain interval. However, since it is an independent device, each device needs to be individually powered, resulting in high installation costs and manufacturing costs. Moreover, since all small animal repelling devices are installed outdoors, it cannot be guaranteed that they will work properly for a long time, and they need to be replaced as a whole during maintenance. Summary of the Invention

[0004] The purpose of the present invention is to provide a harmful animal repelling device, which solves the technical problem of using one main controller to control several playback extenders to play repelling audio.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A harmful animal repelling device includes a control host and several playback extenders. All playback extenders are connected to the control host through a three - wire data bus. The control host includes a voice storage chip, a main controller, and a three - wire power amplifier circuit. The voice storage chip communicates with the main controller through a group of IO ports. The three - wire power amplifier circuit is connected to the main controller, and the voice storage chip is also connected to the three - wire power amplifier circuit.

[0007] Preferably, the main controller is a single - chip microcomputer, and the model is HC32L17_L19.

[0008] Preferably, the voice storage chip is a voice chip IC3. The 13th pin of the voice chip IC3 is connected to a potentiometer W1 through a capacitor C15. The center tap of the potentiometer W1 is connected to the 3rd pin of an amplifier IC4. The 5th pin of the amplifier IC4 outputs an audio signal MUSIC2 through a capacitor C16, and the audio signal MUSIC2 is input to the three - wire power amplifier circuit.

[0009] Preferably, the model of the voice storage chip is ISD4004, and the model of the amplifier IC4 is LM386.

[0010] Preferably, the three-wire power amplification circuit includes a bias voltage circuit, a power amplifier circuit, and a three-wire bus unit. The bias voltage circuit includes diode D1, capacitor C2, capacitor C3, DC-DC module U3, capacitor C5, capacitor C4, capacitor C6, capacitor C7, relay J7, diode D3, and resistor R6. The positive electrode of diode D1 is connected to an external 12VDC power supply, and the negative electrode is connected to the positive input terminal IN+ of DC-DC module U3. The negative input terminal IN- of DC-DC module U3 is connected to the ground wire. Capacitors C2 and C3 are filtering capacitors for the positive input terminal IN+ of DC-DC module U3;

[0011] The positive output terminal OUT+ of DC-DC module U3 is connected to the positive electrode of diode D3 through relay J7. The negative electrode of diode D3 outputs a 12V power supply. The coil terminal of relay J7 is controlled by the IO port of the main controller. The negative output terminal OUT- of DC-DC module U3 is connected to the ground wire. Capacitors C5, C4, C6, and C7 are filtering capacitors for the positive output terminal OUT+ of DC-DC module U3;

[0012] The three-wire bus unit includes transformer T2, capacitor C28, capacitor C29, and interface J1. One end of the secondary side of transformer T2 is connected to the negative electrode of diode D3 through resistor R6, and the other end is connected to pin 2 of interface J1. Pin 3 of interface J1 is connected to the ground wire, and pin 1 is connected to a 12V power supply. Capacitors C28 and C29 are filtering capacitors for pin 2 of interface J1;

[0013] The power amplifier circuit includes power amplifier IC10, capacitor C10, capacitor C40, capacitor C41, capacitor C43, capacitor C44, capacitor C76, capacitor C75, resistor R32, resistor R33, resistor R34, and capacitor C77. Pin 1 of power amplifier IC10 is connected to the audio signal MUSIC2 through capacitor C10. Pin 2 of power amplifier IC10 is connected to one end of resistor R32 through capacitor C75. The other end of resistor R32 is connected to pin 4 of power amplifier IC10. Pin 4 of power amplifier IC10 is also connected to the ground wire through the series-connected resistors R32 and R33. Pin 5 of power amplifier IC10 is connected to a 12V power supply. Capacitors C40, C41, C43, and C44 form a filtering network for pin 5 of power amplifier IC10. Pin 4 of power amplifier IC10 is connected to the positive electrode of capacitor C76. The negative electrode of capacitor C76 outputs the audio signal YINPIN1. The negative electrode of capacitor C76 is also connected to the ground wire through the series-connected resistor R43 and capacitor C77;

[0014] The audio signal YINPIN1 is connected to one end of the primary side of transformer T2, and the other end of the primary side of transformer T2 is connected to the ground wire.

[0015] Preferably, the playback extension includes a three-wire interface J2, a transformer T3, a capacitor C1, a resistor R1, an amplifier U4, a capacitor C8, a resistor R2, a capacitor C9, a speaker SPK, a voltage regulator U1, a capacitor C22, a capacitor C28, a capacitor C29, a resistor R3, an LED D2, and an interface J11. The interface J2 is connected to the interface J1. The 1st, 2nd, and 3rd pins of the interface J1 are respectively connected to the 3rd, 2nd, and 1st pins of the interface J2. The 3rd pin of the interface J2 is respectively connected to the 6th pin of the amplifier U4 and the 1st pin of the voltage regulator U1. The 2nd pin of the interface J2 is connected to one end of the primary side of the transformer T3. The other end of the primary side of the transformer T3 is connected to the ground wire. The 1st pin of the interface J2 is connected to the ground wire;

[0016] One end of the secondary side of the transformer T3 is connected to the positive electrode of the capacitor C1, and the other end is connected to the ground wire. The negative electrode of the capacitor C1 is connected to the 3rd pin of the amplifier U4 through the potentiometer R1. The 2nd, 4th, and 7th pins of the amplifier U4 are connected to the ground wire. The 5th pin of the amplifier U4 is connected to the positive input terminal of the speaker SPK through the capacitor C9. The negative input terminal of the speaker SPK is connected to the ground wire. The 5th pin of the amplifier U4 is also connected to the ground wire through the capacitor C8 and the resistor R2 connected in series;

[0017] The capacitor C22 is a filter capacitor at the input terminal of the voltage regulator U1. The output terminal of the voltage regulator U1 outputs a 5V power supply. The output terminal of the voltage regulator U1 is connected to the 1st pin of the interface J11. The positive electrode of the diode D2 is connected to the output terminal of the voltage regulator U1 through the resistor R3, and the negative electrode is connected to the ground wire. The capacitors C29 and C28 are filter capacitors at the output terminal of the voltage regulator U1. The 2nd pin of the interface J11 is connected to the 3rd pin of the interface J2, and the 3rd pin is connected to the ground wire.

[0018] Preferably, the model of the voltage regulator U1 is LM7805, the model of the amplifier U4 is LM386, the model of the power amplifier IC10 is TDA2003, and the DC-DC module U3 is a 12V DC-DC module.

[0019] Advantages of the present invention:

[0020] The harmful animal repelling device described in the present invention solves the technical problem of using one host to control several playback extensions to play repelling audio. The present invention uses a three-wire bus to drive several extensions, with simple wiring, reducing the installation cost. The present invention adopts a structure of one control host controlling several playback extensions, with the main devices for playing audio set in the control host, and only components such as amplifiers and speakers set in the playback extensions, greatly reducing the cost of the playback extensions and simplifying the maintenance. The present invention can place the control host indoors and only place the low-cost playback extensions outdoors, which can well extend the service life of the control host and reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the schematic block diagram of the present invention;

[0022] Figure 2 This is the circuit diagram of the bias voltage circuit of the present invention;

[0023] Figure 3 This is the circuit diagram of the power amplifier circuit of the present invention;

[0024] Figure 4 This is the circuit diagram of the voice storage chip of the present invention;

[0025] Figure 5 This is the circuit diagram of the playback extension of the present invention. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figures 1 - 5 shown, a harmful animal repelling device includes a control host and several playback extensions. All the playback extensions are connected to the control host through a three-wire data bus. The control host includes a voice storage chip, a main controller, and a three-wire power amplifier circuit. The voice storage chip communicates with the main controller through a group of IO ports. The three-wire power amplifier circuit is connected to the main controller, and the voice storage chip is also connected to the three-wire power amplifier circuit.

[0028] Preferably, the main controller is a single-chip microcomputer, and the model is HC32L17_L19.

[0029] Preferably, the voice storage chip is a voice chip IC3. The 13th pin of the voice chip IC3 is connected to the potentiometer W1 through the capacitor C15. The center tap of the potentiometer W1 is connected to the 3rd pin of the amplifier IC4. The 5th pin of the amplifier IC4 outputs an audio signal MUSIC2 through the capacitor C16. The audio signal MUSIC2 is input to the three-wire power amplifier circuit.

[0030] Preferably, the model of the voice storage chip is ISD4004, and the model of the amplifier IC4 is LM386.

[0031] The present invention uses a voice storage chip as a recording chip. Users can perform recording settings by themselves to make the played sound customizable, which greatly improves the flexibility of the voice. And during the use process, the audio can be replaced to prevent small animals from being difficult to repel because they are used to a certain audio.

[0032] Preferably, the three-wire power amplification circuit includes a bias voltage circuit, a power amplifier circuit, and a three-wire bus unit. The bias voltage circuit includes diode D1, capacitor C2, capacitor C3, DC-DC module U3, capacitor C5, capacitor C4, capacitor C6, capacitor C7, relay J7, diode D3, and resistor R6. The positive electrode of diode D1 is connected to an external 12VDC power supply, and the negative electrode is connected to the positive input terminal IN+ of DC-DC module U3. The negative input terminal IN- of DC-DC module U3 is connected to the ground wire. Capacitors C2 and C3 are filtering capacitors for the positive input terminal IN+ of DC-DC module U3.

[0033] The positive output terminal OUT+ of DC-DC module U3 is connected to the positive electrode of diode D3 through relay J7. The negative electrode of diode D3 outputs a 12V power supply. The coil terminal of relay J7 is controlled by the IO port of the main controller. The negative output terminal OUT- of DC-DC module U3 is connected to the ground wire. Capacitors C5, C4, C6, and C7 are filtering capacitors for the positive output terminal OUT+ of DC-DC module U3.

[0034] The three-wire bus unit includes transformer T2, capacitor C28, capacitor C29, and interface J1. One end of the secondary side of transformer T2 is connected to the negative electrode of diode D3 through resistor R6, and the other end is connected to pin 2 of interface J1. Pin 3 of interface J1 is connected to the ground wire, and pin 1 is connected to a 12V power supply. Capacitors C28 and C29 are filtering capacitors for pin 2 of interface J1.

[0035] The power amplifier circuit includes power amplifier IC10, capacitor C10, capacitor C40, capacitor C41, capacitor C43, capacitor C44, capacitor C76, capacitor C75, resistor R32, resistor R33, resistor R34, and capacitor C77. Pin 1 of power amplifier IC10 is connected to the audio signal MUSIC2 through capacitor C10. Pin 2 of power amplifier IC10 is connected to one end of resistor R32 through capacitor C75. The other end of resistor R32 is connected to pin 4 of power amplifier IC10. Pin 4 of power amplifier IC10 is also connected to the ground wire through the series-connected resistors R32 and R33. Pin 5 of power amplifier IC10 is connected to a 12V power supply. Capacitors C40, C41, C43, and C44 form a filtering network for pin 5 of power amplifier IC10. Pin 4 of power amplifier IC10 is connected to the positive electrode of capacitor C76. The negative electrode of capacitor C76 outputs the audio signal YINPIN1. The negative electrode of capacitor C76 is also connected to the ground wire through the series-connected resistor R43 and capacitor C77.

[0036] The audio signal YINPIN1 is connected to one end of the primary side of transformer T2, and the other end of the primary side of transformer T2 is connected to the ground wire.

[0037] In the present invention, a transformer T2 is adopted in the control host for audio output, and a transformer T3 is adopted in the playback extension for audio conversion, which well isolates the three-wire bus and protects the playback extension and the control host.

[0038] In the present invention, a low-frequency filter circuit composed of a resistor R43 and a capacitor C77 is added at the output end of the power amplifier IC10, improving the audio quality.

[0039] In this embodiment, the capacitors C43, C44, C6 and C7 are all 22P capacitors, which are used for filtering high-frequency signals to prevent high-frequency crosstalk noise.

[0040] Preferably, the playback extension includes a three-wire interface J2, a transformer T3, a capacitor C1, a resistor R1, an amplifier U4, a capacitor C8, a resistor R2, a capacitor C9, a speaker SPK, a voltage regulator U1, capacitors C22, C28, C29, a resistor R3, an LED D2 and an interface J11. The interface J2 is connected to the interface J1. The 1st, 2nd and 3rd pins of the interface J1 are respectively connected to the 3rd, 2nd and 1st pins of the interface J2. The 3rd pin of the interface J2 is respectively connected to the 6th pin of the amplifier U4 and the 1st pin of the voltage regulator U1. The 2nd pin of the interface J2 is connected to one end of the primary side of the transformer T3. The other end of the primary side of the transformer T3 is connected to the ground wire. The 1st pin of the interface J2 is connected to the ground wire;

[0041] One end of the secondary side of the transformer T3 is connected to the positive electrode of the capacitor C1, and the other end is connected to the ground wire. The negative electrode of the capacitor C1 is connected to the 3rd pin of the amplifier U4 through the potentiometer R1. The 2nd, 4th and 7th pins of the amplifier U4 are connected to the ground wire. The 5th pin of the amplifier U4 is connected to the positive input terminal of the speaker SPK through the capacitor C9. The negative input terminal of the speaker SPK is connected to the ground wire. The 5th pin of the amplifier U4 is also connected to the ground wire through the capacitor C8 and the resistor R2 connected in series;

[0042] The capacitor C22 is a filter capacitor at the input end of the voltage regulator U1. The output end of the voltage regulator U1 outputs a 5V power supply. The output end of the voltage regulator U1 is connected to the 1st pin of the interface J11. The positive electrode of the diode D2 is connected to the output end of the voltage regulator U1 through the resistor R3, and the negative electrode is connected to the ground wire. The capacitors C29 and C28 are filter capacitors at the output end of the voltage regulator U1. The 2nd pin of the interface J11 is connected to the 3rd pin of the interface J2, and the 3rd pin is connected to the ground wire.

[0043] In this application, a drive circuit is provided inside the extension, which is composed of a voltage regulator U1 and a diode D2. The voltage regulator U1 can output a 5V power supply externally, and the interface J11 is also connected to a 12V power supply, which can output a 5V power supply and a 12V power supply simultaneously to drive external optical alarm devices, such as LED lights. The diode D2 is used to indicate the working state of U1.

[0044] In use, the main controller of this application controls the relay J7 through the IO port, thereby controlling whether the 12V power supply is loaded onto the interface J1, that is, whether it is loaded onto the three-wire bus. The diodes D3 and D1 are used to prevent reverse connection.

[0045] The resistor R1 is used to adjust the sound volume of the playback extension.

[0046] Preferably, the model of the voltage regulator U1 is LM7805, the model of the amplifier U4 is LM386, the model of the power amplifier IC10 is TDA2003, and the DC-DC module U3 is a 12V DC-DC module.

[0047] The 17th and 16th pins of the voice chip IC3 are the recording input terminals, and the recording content in the voice chip IC3 can be modified by inserting an external MIC.

[0048] This invention only needs to supply power to the control host, and the playback extensions are all powered by the three-wire bus.

[0049] The beneficial effects of this invention:

[0050] The animal repelling device described in this invention solves the technical problem of using one host to control several playback extensions to play repelling audio. This invention uses a three-wire bus to drive several extensions, with simple wiring and reduced installation costs. This invention adopts a structure of one control host controlling several playback extensions, sets the main devices for playing audio in the control host, and only sets components such as amplifiers and speakers in the playback extensions, greatly reducing the cost of the playback extensions and simplifying maintenance. This invention can place the control host indoors and only place the low-cost playback extensions outdoors, which can well extend the service life of the control host and reduce the maintenance cost.

[0051] Any process or method description described in this invention can be understood as representing a module, segment, or part of code including one or more executable instructions for implementing a custom logic function or process. The scope of the preferred embodiments of this invention includes additional implementations, where the functions can be executed in a manner that is not shown or discussed in sequence, including in a substantially simultaneous manner or in the reverse order according to the functions involved, which should be understood by those skilled in the technical field to which the embodiments of this invention belong.

[0052] The logic and / or steps described in this invention, for example, can be regarded as a defined sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or used in combination with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by an instruction execution system, apparatus, or device or in combination with these instruction execution systems, apparatus, or devices. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other appropriate processing as necessary, and then stored in a computer memory.

[0053] It should be understood that various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits with logic gate circuits for implementing logical functions for data modules, application-specific integrated circuits with suitable combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0054] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by a program instructing relevant hardware, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0055] In addition, each functional unit in various embodiments of the present invention may be integrated into one processing module, may exist physically alone for each unit, or two or more units may be integrated into one module. The above integrated module may be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations to the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for repelling harmful animals, characterized by: It includes a control host and several playback extensions, all of which are connected to the control host via a three-wire data bus. The control host includes a voice storage chip, a main controller and a three-wire power amplifier circuit. The voice storage chip communicates with the main controller via a set of IO ports. The three-wire power amplifier circuit is connected to the main controller. The voice storage chip is also connected to the three-wire power amplifier circuit. The voice storage chip is a voice chip IC3, and the 13th pin of the voice chip IC3 is connected to the potentiometer W1 through the capacitor C15. The center tap of the potentiometer W1 is connected to the 3rd pin of the amplifier IC4. The 5th pin of the amplifier IC4 outputs the audio signal MUSIC2 through the capacitor C16. The audio signal MUSIC2 is input to the three-wire power amplifier circuit; The three-wire power amplifier circuit includes a bias voltage circuit, a power amplifier circuit and a three-wire bus unit. The bias voltage circuit includes a diode D1, a capacitor C2, a capacitor C3, a DC-DC module U3, a capacitor C5, a capacitor C4, a capacitor C6, a capacitor C7, a relay J7, a diode D3 and a resistor R6. The positive electrode of the diode D1 is connected to an external 12VDC power supply, and the negative electrode is connected to the positive input terminal IN+ of the DC-DC module U3. The negative input terminal IN- of the DC-DC module U3 is connected to the ground wire. The capacitors C2 and C3 are filter capacitors for the positive input terminal IN+ of the DC-DC module U3. The positive output terminal OUT+ of the DC-DC module U3 is connected to the positive electrode of the diode D3 through the relay J7, and the negative electrode of the diode D3 outputs a 12V power supply. The coil end of the relay J7 is controlled by the IO port of the main controller. The negative output terminal OUT- of the DC-DC module U3 is connected to the ground wire. Capacitors C5, C4, C6 and C7 are filter capacitors for the positive output terminal OUT+ of the DC-DC module U3; The three-wire bus unit includes a transformer T2, a capacitor C28, a capacitor C29 and an interface J1. One end of the secondary side of the transformer T2 is connected to the cathode of the diode D3 through a resistor R6, and the other end is connected to pin 2 of the interface J1. Pin 3 of the interface J1 is connected to the ground wire, and pin 1 is connected to the 12V power supply. Capacitors C28 and C29 are filter capacitors for pin 2 of the interface J1. The power amplifier circuit includes a power amplifier IC10, a capacitor C10, a capacitor C40, a capacitor C41, a capacitor C43, a capacitor C44, a capacitor C76, a capacitor C75, a resistor R32, a resistor R33, a resistor R34 and a capacitor C77. Pin 1 of the power amplifier IC10 is connected to the audio signal MUSIC2 through the capacitor C10, and pin 2 is connected to one end of the resistor R32 through the capacitor C75. The other end of the resistor R32 is connected to pin 4 of the power amplifier IC10. Pin 4 is also connected to the ground wire through resistors R32 and R33 connected in series. Pin 5 of the power amplifier IC10 is connected to a 12V power supply. Capacitors C40, C41, C43, and C44 form a filter network for pin 5 of the power amplifier IC10. Pin 4 of the power amplifier IC10 is connected to the positive electrode of capacitor C76. The negative electrode of capacitor C76 outputs the audio signal YINPIN1. The negative electrode of capacitor C76 is also connected to the ground wire through resistor R43 and capacitor C77 connected in series. The audio signal YINPIN1 is connected to one end of the primary side of the transformer T2, and the other end of the primary side of the transformer T2 is connected to the ground line.

2. The device for repelling harmful animals according to claim 1, wherein: The main controller is a single chip microcomputer, model HC32L17_L19.

3. The device for repelling harmful animals according to claim 2, wherein: The model of the voice storage chip is ISD4004, and the model of the amplifier IC4 is LM386.

4. The device for repelling harmful animals according to claim 1, wherein: The playback extension includes a three-wire interface J2, a transformer T3, a capacitor C1, a resistor R1, an amplifier U4, a capacitor C8, a resistor R2, a capacitor C9, a speaker SPK, a voltage regulator U1, a capacitor C22, a capacitor C28, a capacitor C29, a resistor R3, an LED lamp D2 and an interface J11. The interface J2 is connected to the interface J1, and pins 1, 2 and 3 of the interface J1 are respectively connected to pins 3, 2 and 1 of the interface J2. Pin 3 of the interface J2 is respectively connected to pin 6 of the amplifier U4 and pin 1 of the voltage regulator U1. Pin 2 of the interface J2 is connected to one end of the primary side of the transformer T3, the other end of the primary side of the transformer T3 is connected to the ground wire, and pin 1 of the interface J2 is connected to the ground wire. One end of the secondary side of the transformer T3 is connected to the positive electrode of the capacitor C1, and the other end is connected to the ground wire. The negative electrode of the capacitor C1 is connected to the 3rd pin of the amplifier U4 through the potentiometer R1. The 2nd, 4th and 7th pins of the amplifier U4 are connected to the ground wire. The 5th pin of the amplifier U4 is connected to the positive input terminal of the speaker SPK through the capacitor C9. The negative input terminal of the speaker SPK is connected to the ground wire. The 5th pin of the amplifier U4 is also connected to the ground wire through the capacitor C8 and the resistor R2 connected in series. Capacitor C22 is the filter capacitor at the input end of the voltage regulator U1. The output end of the voltage regulator U1 outputs a 5V power supply. The output end of the voltage regulator U1 is connected to pin 1 of the interface J11. The positive electrode of the diode D2 is connected to the output end of the voltage regulator U1 through the resistor R3, and the negative electrode is connected to the ground. Capacitors C29 and C28 are the filter capacitors at the output end of the voltage regulator U1. Pin 2 of the interface J11 is connected to pin 3 of the interface J2, and pin 3 is connected to the ground.

5. The device for repelling harmful animals according to claim 4, characterized in that: The model of the voltage regulator U1 is LM7805, the model of the amplifier U4 is LM386, the model of the power amplifier IC10 is TDA2003, and the DC-DC module U3 is a 12VDC-DC module.

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