30W video feeder

Abstract

The utility model belongs to the technical field of electronic control, and relates to a 30W video feeder which comprises an audio and video processing chip, and a direct current motor, a power amplifier circuit, a DC-DC step-down circuit, a low-dropout linear voltage stabilizing circuit, a camera, a battery sampling circuit, a feeding detection circuit, an antenna, a microphone and a key circuit which are electrically connected with the audio and video processing chip, the audio and video processing chip is used for processing video signals from the camera and audio signals from the microphone and controlling the direct current motor and the power amplifier circuit, the direct current motor is used for driving the feeding detection circuit to achieve the automatic feeding function, and the power amplifier circuit is used for amplifying the audio signals. By integrating components such as an audio and video processing chip and a direct current motor, various functions such as automatic feeding, remote monitoring and voice communication are realized; the components cooperate with one another and work together, and convenient and intelligent pet care experience is provided for a pet owner.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic control, and more specifically, to a 30W video feeder. Background Art

[0002] The video feeder, as an automatic feeder with integrated video monitoring function, is designed for pet families, especially for those scenarios where it is necessary to remotely monitor the health status and dietary needs of pets.

[0003] Video feeders are mainly used in the following situations: First, in working families, where the owner cannot go home on time to feed the pet due to busy work, the video feeder can ensure that the pet eats on time; second, in families with elderly pets, for pet owners with limited mobility or poor eyesight, the video feeder provides a convenient way to monitor and feed the pet; third, in families with multiple pets, the video feeder can clearly distinguish the eating status of each pet to avoid competition for food.

[0004] While video feeders offer numerous advantages for pet owners, existing technologies still have some drawbacks. First, the camera quality of some video feeders is not clear enough to provide high-quality monitoring footage, hindering pet owners' ability to accurately assess their pets' condition. Second, the feeding systems of some products are unstable, prone to freezing or missed feedings, which can affect pets' normal feeding. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a 30W video feeder, comprising:

[0006] An audio and video processing chip, a DC motor, a power amplifier circuit, a DC-DC step-down circuit, a low-voltage dropout linear regulator circuit, a camera, a battery sampling circuit, a feeding detection circuit, an antenna, a microphone, and a key circuit electrically connected to the audio and video processing chip. The audio and video processing chip is used to process the video signal from the camera and the audio signal from the microphone, and to control the DC motor and the power amplifier circuit. The DC motor is used to drive the feeding detection circuit to achieve an automatic feeding function. The power amplifier circuit is used to amplify the audio signal. The DC-DC step-down circuit is used to convert a high-voltage DC power supply into a low-voltage DC power supply. The low-voltage dropout linear regulator circuit is used to provide a stable DC voltage output. The camera is used to capture the pet's activities in real time and transmit them to a remote device. The battery sampling circuit is used to monitor the voltage and current parameters of the battery inside the feeder in real time to evaluate the remaining battery charge and usage status. The feeding detection circuit is used to detect whether the feeding mechanism is working as expected and whether food has been successfully delivered to the discharge port. The antenna is used to receive and transmit wireless signals to achieve communication and data transmission with a remote device.

[0007] Preferably, the audio and video processing chip includes BK7256-QFN80.

[0008] Preferably, the power amplifier circuit includes: pin 1 of the audio power amplifier chip U4 is respectively connected to one end of the resistor R14 and one end of the resistor R16, pin 2 of the audio power amplifier chip U4 is respectively connected to one end of the capacitor C33 and one end of the resistor R17, the other end of the resistor R17 is respectively connected to pin 3 of the audio power amplifier chip U4 and one end of the resistor R18, the other end of the resistor R18 is connected to one end of the capacitor C36, pin 4 of the audio power amplifier chip U4 is respectively connected to one end of the resistor R19 and one end of the resistor R20, the other end of the resistor R19 is connected to one end of the capacitor C37, the other end of the resistor R20 is respectively connected to pin 5 of the audio power amplifier chip U4 and one end of the inductor L6, the other end of the inductor L6 is connected to one end of the diode D4, pin 6 of the audio power amplifier chip U4 is respectively connected to one end of the capacitor C38 and one end of the capacitor C39, and pin 8 of the audio power amplifier chip U4 is connected to one end of the inductor L5.

[0009] Preferably, the DC-DC step-down circuit includes: pin 4 of the monolithic step-down switching regulator chip U5 is respectively connected to one end of capacitor C40 and one end of capacitor C41, pin 5 of the monolithic step-down switching regulator chip U5 is respectively connected to one end of capacitor C42, one end of resistor R26, and one end of resistor R31, pin 3 of the monolithic step-down switching regulator chip U5 is connected to one end of inductor L7, the other end of inductor L7 is respectively connected to the other end of capacitor C42, the other end of resistor R26, one end of capacitor C43, and one end of capacitor C44, and the other end of capacitor C40, the other end of capacitor C41, the other end of resistor R31, the other end of capacitor C43, and the other end of capacitor C44 are all grounded.

[0010] Preferably, the low-voltage difference linear voltage regulator circuit includes: pin 1 of the low-voltage difference linear voltage regulator chip U3 is respectively connected to one end of capacitor C26 and one end of capacitor C27, pin 3 of the low-voltage difference linear voltage regulator chip U3 is connected to one end of resistor R7, pin 5 of the low-voltage difference linear voltage regulator chip U3 is respectively connected to one end of capacitor C28 and one end of capacitor C29, and the other end of capacitor C26, the other end of capacitor C27, the other end of capacitor C28, and the other end of capacitor C29 are all grounded.

[0011] Preferably, the battery sampling circuit includes: a source of the transistor Q2 is grounded, a gate of the transistor Q2 is connected to one end of a resistor R30 and one end of a resistor R24 ​​respectively, the other end of the resistor R30 is grounded, and a drain of the transistor Q2 is connected to the anode of the diode D8.

[0012] Preferably, the feeding detection circuit includes: the motor horn interface pin 7 is respectively connected to the positive electrode of the diode D6 and one end of the resistor R28, the motor horn interface pin 8 is respectively connected to one end of the diode D10, one end of the resistor R27, one end of the resistor R22, and the positive electrode of the diode D9, the cathode of the diode D6 is connected to the positive electrode of the diode D7, the cathode of the diode D7 is connected to the source of the transistor Q1, the gate of the transistor Q1 is respectively connected to the other end of the diode R22 and one end of the diode R23, the cathode of the diode D9 is connected to the positive electrode of the capacitor C45, the other end of the resistor R28 is respectively connected to one end of the capacitor C46 and one end of the resistor R33, and the other end of the resistor R27 is connected to one end of the resistor R32.

[0013] Preferably, the key circuit includes: one end of the key S1 is grounded, the other end of the key S1 is respectively connected to one end of the resistor R8 and one end of the capacitor C30, and the other end of the capacitor C30 is grounded.

[0014] Preferably, the 30W video feeder of the present invention also includes an RGB indication circuit, which is connected to the audio and video processing chip. The RGB indication circuit includes: the anode of the diode G is connected to the anode of the diode R and the anode of the diode B respectively, the cathode of the diode G is connected to one end of the resistor R11, the cathode of the diode R is connected to one end of the resistor R12, and the cathode of the diode B is connected to one end of the resistor R13.

[0015] Preferably, the 30W video feeder of the present invention further includes a reset circuit, which is connected to the audio and video processing chip. The reset circuit includes: one end of the resistor R2 is connected to one end of the capacitor C22, and the other end of the capacitor C22 is grounded.

[0016] The implementation of the 30W video feeder of the utility model has the following beneficial effects: by integrating components such as an audio and video processing chip, a DC motor, a power amplifier circuit, a DC-DC step-down circuit, a low-voltage difference linear voltage regulator circuit, a camera, a battery sampling circuit, a feeding detection circuit and an antenna, it realizes multiple functions such as automatic feeding, remote monitoring, and voice communication; these components cooperate and work together to provide pet owners with a convenient and intelligent pet care experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative work. The following will further illustrate the present invention in conjunction with the drawings and embodiments. In the drawings:

[0018] Figure 1 This is a block diagram of the 30W video feeder of the utility model;

[0019] Figure 2 This is the circuit diagram of the power amplifier circuit in the 30W video feeder of the utility model;

[0020] Figure 3 This is the circuit diagram of the DC-DC step-down circuit in the 30W video feeder of the utility model;

[0021] Figure 4 This is the circuit diagram of the low voltage difference linear voltage regulator circuit in the 30W video feeder of the utility model;

[0022] Figure 5 This is the circuit diagram of the battery sampling circuit in the 30W video feeder of this utility model;

[0023] Figure 6 This is the circuit diagram of the feeding detection circuit in the 30W video feeder of the utility model;

[0024] Figure 7 This is the circuit diagram of the key circuit in the 30W video feeder of the utility model;

[0025] Figure 8 This is the circuit diagram of the RGB indicator circuit in the 30W video feeder of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] See also Figure 1 , is a block diagram of the 30W video feeder of the utility model. Figure 1 As shown, the 30W video feeder provided in the first embodiment of the present invention includes at least an audio and video processing chip, a DC motor electrically connected to the audio and video processing chip, a power amplifier circuit, a DC-DC step-down circuit, a low-voltage dropout linear voltage regulator circuit, a camera, a battery sampling circuit, a feeding detection circuit, an antenna, a microphone, and a key circuit. The audio and video processing chip is used to process the video signal from the camera and the audio signal from the microphone, and to control the DC motor and the power amplifier circuit. The DC motor is used to drive the feeding detection circuit to realize the automatic feeding function. The power amplifier circuit is used to amplify the audio signal. The DC-DC step-down circuit is used to convert the high-voltage DC power supply into a low-voltage DC power supply. The low-voltage dropout linear voltage regulator circuit is used to provide a stable DC voltage output. The camera is used to capture the pet's activity in real time and transmit it to a remote device. The battery sampling circuit is used to monitor the voltage and current parameters of the battery inside the feeder in real time to evaluate the remaining battery power and usage status. The feeding detection circuit is used to detect whether the feeding mechanism is working as expected and whether the food is successfully delivered to the discharge port. The antenna is used to receive and transmit wireless signals to realize communication and data transmission with the remote device.

[0030] The audio and video processing chip is the core control unit of the video feeder, responsible for processing video signals from the camera and audio signals from the microphone, as well as controlling other hardware components such as DC motors and power amplifier circuits. It integrates functions such as audio and video codecs, digital signal processors (DSPs), and microcontrollers (MCUs), capable of real-time processing of audio and video data, achieving high-quality video recording, compression, and transmission, as well as audio recording and playback.

[0031] The audio and video processing chip uses a built-in codec to digitize the raw video signals captured by the camera and the raw audio signals collected by the microphone, converting them into digital signals. The DSP then compresses and encodes the audio and video data to reduce the bandwidth required for data transmission. Meanwhile, the MCU is responsible for controlling the operation of the entire system, including the synchronization of audio and video data and communication with remote terminals. Finally, the processed audio and video data is transmitted via a wireless module (such as Wi-Fi or Bluetooth) to a remote device such as a smartphone or computer for the pet owner to view and monitor.

[0032] In specific implementation, the audio and video processing chip includes but is not limited to BK7256-QFN80. In this embodiment, BK7256-QFN80 is selected.

[0033] The DC motor drive unit controls the rotary dial for feeding. The DC motor is a key actuator in the video feeder, driving the feeding mechanism and enabling automatic feeding. It controls the opening and closing of the food dispensing port and adjusts the dispensing speed based on instructions from the audio and video processing chip.

[0034] The operating principle of a DC motor is based on electromagnetic induction and electromagnetic force. When the motor is energized, current flowing through the stator coil generates a magnetic field, which interacts with the permanent magnets in the rotor, generating electromagnetic force to rotate the rotor. The audio and video processing chip controls the DC motor's drive circuit via PWM (pulse width modulation) signals, adjusting the motor's speed and direction. When feeding is required, the drive circuit sends a forward signal to the motor, which drives the feeding mechanism to push food to the dispensing port. When feeding is complete, a reverse or stop signal is sent, causing the motor to stop or reverse back to its initial position.

[0035] Figure 2 This is the circuit diagram of the power amplifier circuit in the 30W video feeder of this utility model. Figure 2As shown, the power amplifier circuit includes: pin 1 of the audio power amplifier chip U4 is respectively connected to one end of the resistor R14 and one end of the resistor R16, pin 2 of the audio power amplifier chip U4 is respectively connected to one end of the capacitor C33 and one end of the resistor R17, the other end of the resistor R17 is respectively connected to pin 3 of the audio power amplifier chip U4 and one end of the resistor R18, the other end of the resistor R18 is connected to one end of the capacitor C36, pin 4 of the audio power amplifier chip U4 is respectively connected to one end of the resistor R19 and one end of the resistor R20, the other end of the resistor R19 is connected to one end of the capacitor C37, the other end of the resistor R20 is respectively connected to pin 5 of the audio power amplifier chip U4 and one end of the inductor L6, the other end of the inductor L6 is connected to one end of the diode D4, pin 6 of the audio power amplifier chip U4 is respectively connected to one end of the capacitor C38 and one end of the capacitor C39, and pin 8 of the audio power amplifier chip U4 is connected to one end of the inductor L5.

[0036] The power amplifier circuit is mainly used to amplify the audio signal so that it can drive the speaker to produce a loud enough sound. In the video feeder, the power amplifier circuit is connected to the audio and video processing chip and the speaker to play the owner's pre-recorded voice or the sound of a real-time call.

[0037] The working principle of a power amplifier circuit is based on the principle of electronic amplification. The audio signal first passes through a preamplifier for preliminary amplification before being sent to a power amplifier for high-power amplification. A power amplifier typically uses transistors or integrated circuits as amplification components, amplifying the voltage and current of the audio signal to a level sufficient to drive a speaker. In a video feeder, the power amplifier circuit receives the audio signal through an audio and video processing chip, amplifies it, and drives the speaker to produce sound, enabling voice communication with the pet.

[0038] Figure 3 This is the circuit diagram of the DC-DC step-down circuit in the 30W video feeder of this utility model. Figure 3 As shown, the DC-DC step-down circuit includes: pin 4 of the monolithic step-down switching regulator chip U5 is respectively connected to one end of the capacitor C40 and one end of the capacitor C41, pin 5 of the monolithic step-down switching regulator chip U5 is respectively connected to one end of the capacitor C42, one end of the resistor R26, and one end of the resistor R31, pin 3 of the monolithic step-down switching regulator chip U5 is connected to one end of the inductor L7, the other end of the inductor L7 is respectively connected to the other end of the capacitor C42, the other end of the resistor R26, one end of the capacitor C43, and one end of the capacitor C44, the other end of the capacitor C40, the other end of the capacitor C41, the other end of the resistor R31, the other end of the capacitor C43, and the other end of the capacitor C44 are all grounded.

[0039] In a specific implementation, the monolithic step-down switching regulator chip U5 can be, but is not limited to, a JW5250A. In this embodiment, the JW5250A is selected. Based on constant on-time control, the JW5250A features high efficiency, compact packaging, multiple protection mechanisms, and stability and reliability.

[0040] The DC-DC step-down circuit converts the high-voltage DC power supply inside the video feeder into a low-voltage DC power supply to meet the power supply needs of various electronic components, such as the audio and video processing chip BK7256. For example, it converts the input 12V DC power supply into a low-voltage power supply such as 5V or 3.3V to supply components such as the audio and video processing chip and the camera.

[0041] Figure 4 This is the circuit diagram of the low voltage difference linear voltage regulator circuit in the 30W video feeder of this utility model. Figure 4 As shown, the low voltage difference linear voltage regulator circuit includes: pin 1 of the low voltage difference linear voltage regulator chip U3 is respectively connected to one end of the capacitor C26 and one end of the capacitor C27, pin 3 of the low voltage difference linear voltage regulator chip U3 is connected to one end of the resistor R7, pin 5 of the low voltage difference linear voltage regulator chip U3 is respectively connected to one end of the capacitor C28 and one end of the capacitor C29, and the other end of the capacitor C26, the other end of the capacitor C27, the other end of the capacitor C28, and the other end of the capacitor C29 are all grounded.

[0042] The low voltage dropout linear regulator circuit is also used to power the camera.

[0043] A low-dropout (LDO) voltage regulator features a constant current output voltage, and is used to provide a stable DC voltage output when the input-output voltage difference is small. In video feeders, LDOs are used to provide clean power to components sensitive to power supply noise, such as audio and video processing chips.

[0044] The LDO operates based on the principle of negative feedback regulation. When the input voltage fluctuates or the load changes, the low-dropout linear regulator (LDO) chip U3 detects the difference between the output voltage and the reference voltage and generates a corresponding control signal to adjust the conduction level of the regulator transistor, thereby maintaining a stable output voltage. Because the LDO's input-output voltage difference is small (typically less than 1V), it offers low power consumption and high efficiency.

[0045] The camera is a crucial component of any video feeder, capturing your pet's movements in real time and transmitting them to a remote device. Choose a camera with high-definition image quality, a wide-angle field of view, and night vision capabilities to ensure clear capture of your pet's movements in any environment.

[0046] The operating principle of a camera is based on photoelectric conversion. When light strikes the camera's photosensitive element (such as a CMOS or CCD sensor), it converts the light signal into an electrical signal. This electrical signal then undergoes processing steps such as pre-amplification and analog-to-digital conversion (ADC) before being converted into a digital signal and transmitted to an audio and video processing chip for further processing. In a video feed, the camera is typically connected to the audio and video processing chip via a serial interface (such as I2C or SPI) to enable data transmission and control.

[0047] Figure 5 This is the circuit diagram of the battery sampling circuit in the 30W video feeder of this utility model. Figure 5 As shown, the battery sampling circuit includes: the source of the transistor Q2 is grounded, the gate of the transistor Q2 is connected to one end of the resistor R30 and one end of the resistor R24 ​​respectively, the other end of the resistor R30 is grounded, and the drain of the transistor Q2 is connected to the anode of the diode D8.

[0048] The battery sampling circuit is used to monitor the voltage and current of the battery inside the video feeder in real time to evaluate the remaining battery power and usage status. This is important for ensuring that the video feeder can still work normally in the event of a power outage.

[0049] The battery sampling circuit typically converts the battery voltage and current into a measurable low-voltage signal through a voltage divider or current sampling resistor. This signal is then fed into an audio and video processing chip or a dedicated battery charge detection chip for processing. The chip calculates the remaining battery charge and battery life based on the sampled voltage and current values ​​and transmits this information to the pet owner via a display or wirelessly.

[0050] Figure 6 This is the circuit diagram of the feeding detection circuit in the 30W video feeder of this utility model. Figure 6 As shown, the feeding detection circuit includes: the motor horn interface pin 7 is respectively connected to the positive electrode of the diode D6 and one end of the resistor R28, the motor horn interface pin 8 is respectively connected to one end of the diode D10, one end of the resistor R27, one end of the resistor R22, and the positive electrode of the diode D9, the cathode of the diode D6 is connected to the positive electrode of the diode D7, the cathode of the diode D7 is connected to the source of the transistor Q1, the gate of the transistor Q1 is respectively connected to the other end of the diode R22 and one end of the diode R23, the cathode of the diode D9 is connected to the positive electrode of the capacitor C45, the other end of the resistor R28 is respectively connected to one end of the capacitor C46 and one end of the resistor R33, and the other end of the resistor R27 is connected to one end of the resistor R32.

[0051] The feeding detection circuit is used to detect whether the feeding mechanism is working as expected and whether the food is successfully delivered to the discharge port. This is crucial to ensure the accuracy and reliability of automatic feeding.

[0052] The antenna is one of the important components for the video feeder to communicate wirelessly with the outside world. It is responsible for receiving and transmitting wireless signals (such as Wi-Fi signals, Bluetooth signals, etc.) to achieve communication and data transmission with remote devices (such as smartphones, computers, etc.).

[0053] Antennas operate based on the propagation and reception of electromagnetic waves. When wireless signals (such as Wi-Fi signals) propagate through the air, antennas, through their specialized structure and materials, convert electromagnetic wave energy into electrical signals (or vice versa), thereby enabling signal reception and transmission. In video feeds, antennas are typically connected to the wireless module within the audio and video processing chip, enabling communication with remote devices and data transmission via the wireless module.

[0054] Figure 7 This is the circuit diagram of the key circuit in the 30W video feeder of this utility model. Figure 7 As shown, the key circuit includes: one end of the key S1 is grounded, the other end of the key S1 is connected to one end of the resistor R8 and one end of the capacitor C30 respectively, and the other end of the capacitor C30 is grounded.

[0055] The key circuit is used to detect different command information.

[0056] Figure 8 This is the circuit diagram of the RGB indicator circuit in the 30W video feeder of the utility model. Figure 8 As shown, in a specific implementation, the 30W video feeder of the present invention also includes an RGB indication circuit, which is connected to the audio and video processing chip. The RGB indication circuit includes: the anode of the diode G is respectively connected to the anode of the diode R and the anode of the diode B, the cathode of the diode G is connected to one end of the resistor R11, the cathode of the diode R is connected to one end of the resistor R12, and the cathode of the diode B is connected to one end of the resistor R13.

[0057] The RGB indication circuit is used to indicate the working status of the 30W video feeder of the utility model.

[0058] In specific implementation, the 30W video feeder of the present invention also includes a reset circuit, which is connected to the audio and video processing chip. The reset circuit includes: one end of the resistor R2 is connected to one end of the capacitor C22, and the other end of the capacitor C22 is grounded.

[0059] During specific implementation, the 30W video feeder of the present invention can also be equipped with an external Flash for storing firmware and prompt tone information.

[0060] In specific implementation, the 30W video feeder of the present invention can also be provided with a USB detection circuit for identifying whether it is powered by USB, and the MCU enters different working modes according to different working states of the USB.

[0061] The working principle of the 30W video feeder of the present invention is as follows: an audio and video processing chip such as BK7256 sends and reports videos and prompt sounds through a wireless network, collects and records voice through a local microphone, broadcasts it through a power amplifier to control the speaker, and then performs feeding operations by controlling the motor.

[0062] Through the design of the above embodiments, the beneficial effects of the present invention are as follows: by integrating components such as an audio and video processing chip, a DC motor, a power amplifier circuit, a DC-DC step-down circuit, a low-voltage difference linear voltage regulator circuit, a camera, a battery sampling circuit, a feeding detection circuit and an antenna, multiple functions such as automatic feeding, remote monitoring, and voice communication are realized; these components cooperate and work together to provide pet owners with a convenient and intelligent pet care experience.

[0063] While the present invention has been described with reference to specific embodiments, those skilled in the art will appreciate that various modifications and equivalents may be made without departing from the scope of the present invention. Furthermore, numerous modifications may be made to adapt the present invention to specific applications without departing from its scope. Therefore, the present invention is not limited to the specific embodiments disclosed herein but encompasses all embodiments falling within the scope of the claims.

Claims

1. A 30W video feeder, characterized in that, include: An audio and video processing chip, a DC motor, a power amplifier circuit, a DC-DC step-down circuit, a low-voltage dropout linear regulator circuit, a camera, a battery sampling circuit, a feeding detection circuit, an antenna, a microphone, and a key circuit electrically connected to the audio and video processing chip. The audio and video processing chip is used to process the video signal from the camera and the audio signal from the microphone, and to control the DC motor and the power amplifier circuit. The DC motor is used to drive the feeding detection circuit to achieve an automatic feeding function. The power amplifier circuit is used to amplify the audio signal. The DC-DC step-down circuit is used to convert a high-voltage DC power supply into a low-voltage DC power supply. The low-voltage dropout linear regulator circuit is used to provide a stable DC voltage output. The camera is used to capture the pet's activities in real time and transmit them to a remote device. The battery sampling circuit is used to monitor the voltage and current parameters of the battery inside the feeder in real time to evaluate the remaining battery charge and usage status. The feeding detection circuit is used to detect whether the feeding mechanism is working as expected and whether food has been successfully delivered to the discharge port. The antenna is used to receive and transmit wireless signals to achieve communication and data transmission with a remote device.

2. The 30W video feeder according to claim 1, characterized in that, The audio and video processing chip includes BK7256-QFN80.

3. The 30W video feeder according to claim 1, characterized in that, The power amplifier circuit includes: pin 1 of the audio power amplifier chip U4 is respectively connected to one end of the resistor R14 and one end of the resistor R16, pin 2 of the audio power amplifier chip U4 is respectively connected to one end of the capacitor C33 and one end of the resistor R17, the other end of the resistor R17 is respectively connected to pin 3 of the audio power amplifier chip U4 and one end of the resistor R18, the other end of the resistor R18 is connected to one end of the capacitor C36, pin 4 of the audio power amplifier chip U4 is respectively connected to one end of the resistor R19 and one end of the resistor R20, the other end of the resistor R19 is connected to one end of the capacitor C37, the other end of the resistor R20 is respectively connected to pin 5 of the audio power amplifier chip U4 and one end of the inductor L6, the other end of the inductor L6 is connected to one end of the diode D4, pin 6 of the audio power amplifier chip U4 is respectively connected to one end of the capacitor C38 and one end of the capacitor C39, and pin 8 of the audio power amplifier chip U4 is connected to one end of the inductor L5.

4. The 30W video feeder according to claim 1, characterized in that, The DC-DC step-down circuit includes: pin 4 of the monolithic step-down switching regulator chip U5 is respectively connected to one end of capacitor C40 and one end of capacitor C41, pin 5 of the monolithic step-down switching regulator chip U5 is respectively connected to one end of capacitor C42, one end of resistor R26, and one end of resistor R31, pin 3 of the monolithic step-down switching regulator chip U5 is connected to one end of inductor L7, the other end of inductor L7 is respectively connected to the other end of capacitor C42, the other end of resistor R26, one end of capacitor C43, and one end of capacitor C44, the other end of capacitor C40, the other end of capacitor C41, the other end of resistor R31, the other end of capacitor C43, and the other end of capacitor C44 are all grounded.

5. The 30W video feeder according to claim 1, characterized in that, The low-voltage difference linear voltage regulator circuit includes: pin 1 of the low-voltage difference linear voltage regulator chip U3 is respectively connected to one end of capacitor C26 and one end of capacitor C27, pin 3 of the low-voltage difference linear voltage regulator chip U3 is connected to one end of resistor R7, pin 5 of the low-voltage difference linear voltage regulator chip U3 is respectively connected to one end of capacitor C28 and one end of capacitor C29, and the other end of capacitor C26, the other end of capacitor C27, the other end of capacitor C28, and the other end of capacitor C29 are all grounded.

6. The 30W video feeder according to claim 1, characterized in that, The battery sampling circuit includes: a source of the transistor Q2 is grounded, a gate of the transistor Q2 is connected to one end of a resistor R30 and one end of a resistor R24 ​​respectively, the other end of the resistor R30 is grounded, and a drain of the transistor Q2 is connected to the anode of the diode D8.

7. The 30W video feeder according to claim 1, characterized in that, The feeding detection circuit includes: the motor horn interface pin 7 is respectively connected to the positive electrode of the diode D6 and one end of the resistor R28, the motor horn interface pin 8 is respectively connected to one end of the diode D10, one end of the resistor R27, one end of the resistor R22, and the positive electrode of the diode D9, the cathode of the diode D6 is connected to the positive electrode of the diode D7, the cathode of the diode D7 is connected to the source of the transistor Q1, the gate of the transistor Q1 is respectively connected to the other end of the diode R22 and one end of the diode R23, the cathode of the diode D9 is connected to the positive electrode of the capacitor C45, the other end of the resistor R28 is respectively connected to one end of the capacitor C46 and one end of the resistor R33, and the other end of the resistor R27 is connected to one end of the resistor R32.

8. The 30W video feeder according to claim 1, characterized in that, The key circuit includes: one end of a key S1 is grounded, the other end of the key S1 is respectively connected to one end of a resistor R8 and one end of a capacitor C30, and the other end of the capacitor C30 is grounded.

9. The 30W video feeder according to claim 1, characterized in that It also includes an RGB indication circuit, which is connected to the audio and video processing chip. The RGB indication circuit includes: the anode of the diode G is connected to the anode of the diode R and the anode of the diode B respectively, the cathode of the diode G is connected to one end of the resistor R11, the cathode of the diode R is connected to one end of the resistor R12, and the cathode of the diode B is connected to one end of the resistor R13.

10. The 30W video feeder according to any one of claims 1 to 9, characterized in that: It also includes a reset circuit, which is connected to the audio and video processing chip. The reset circuit includes: one end of the resistor R2 is connected to one end of the capacitor C22, and the other end of the capacitor C22 is grounded.

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