Dormancy control circuit and recording and broadcasting device

Abstract

The application provides a hibernation control circuit and a recording and broadcasting device. The hibernation control circuit comprises a detection module, a main control module and a power supply control module. The detection module comprises an audio acquisition unit and a signal conversion unit. An audio signal end of the audio acquisition unit is connected to an input end of the signal conversion unit. An output end of the signal conversion unit is connected to a first signal input end of the main control module. The power supply control module comprises a power supply enable chip and a power supply switch. A control end of the power supply enable chip is connected to a power supply control signal output end of the main control module. An enable signal output end of the power supply enable chip is connected to a control end of the power supply switch. The power supply switch is arranged between a power supply and a preset component. The hibernation control circuit can enable live audio to participate in a power supply control process in the form of a level signal, thereby providing real-time and accurate state information for subsequent hibernation control.

Description

Technical Field

[0001] This application relates to the field of smart terminal technology, and in particular to a sleep control circuit and recording equipment. Background Technology

[0002] Currently, smart classroom recording terminals generally use a always-on mode or a timed power-on / off mode for standby and sleep control.

[0003] However, timed on / off switching is ill-suited to the flexibility of actual teaching activities, such as adding extra classes or ending classes early. This can easily lead to equipment mistakenly going into sleep mode during teaching or continuing to run even when there is no teaching activity, resulting in recording interruptions, increased energy consumption, and wasted equipment resources. Furthermore, traditional solutions do not incorporate core characteristics of teaching activities (such as audio signals generated during lectures) into their status assessments, lacking real-time monitoring of the actual teaching status. The accuracy of equipment sleep mode detection is insufficient, still requiring manual intervention to avoid misjudgments, leading to management inconvenience and difficulty in effectively reducing energy consumption.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] Based on this, embodiments of this application provide a sleep control circuit and recording device, which enables on-site audio to participate in the power control process in the form of level signals, providing real-time and accurate status information for subsequent sleep control.

[0006] According to some embodiments, this application provides a sleep control circuit, including a detection module, a main control module and a power control module. The detection module includes an audio acquisition unit and a signal conversion unit. The audio signal terminal of the audio acquisition unit is connected to the input terminal of the signal conversion unit, and the output terminal of the signal conversion unit is connected to the first signal input terminal of the main control module. The power control module includes a power enable chip and a power switch. The control terminal of the power enable chip is connected to the power control signal output terminal of the main control module, and the enable signal output terminal of the power enable chip is connected to the control terminal of the power switch. The power switch is located between the power supply and the preset component. The audio acquisition unit acquires on-site audio signals and sends them to a signal conversion unit. The signal conversion unit converts the on-site audio signals into analog level signals and sends the analog level signals to the main control module. The main control module outputs a first control signal to the control terminal of the power enable chip based on the analog level signals. The first control signal is used to control the power switch to turn off.

[0007] In some embodiments, the sleep control circuit further includes a wake-up signal triggering unit, the output of which is connected to the second signal input of the main control module; The wake-up signal triggering unit sends a wake-up signal to the main control module. The main control module outputs a second control signal to the control terminal of the power enable chip according to the wake-up signal. The second control signal is used to control the power switch to be turned on.

[0008] In some embodiments, the main control module includes a microcontroller, which has a first signal input terminal, a second signal input terminal, and a power control signal output terminal.

[0009] In some embodiments, the power control signal output terminal includes a first power control signal output terminal and a second power control signal output terminal; The main control module includes: A first comparator, wherein the first input terminal of the first comparator corresponds to the first signal input terminal, the second input terminal of the first comparator receives the first reference signal, and the output terminal of the first comparator corresponds to the first control signal output terminal; The second comparator has a first output terminal corresponding to the second signal input terminal, a second reference signal input at its second input terminal, and an output terminal corresponding to the second control signal output terminal.

[0010] In some embodiments, the main control module further includes a first filtering circuit, the input of which is connected to the output of the wake-up signal triggering unit, and the output of which is connected to the second signal input of the main control module.

[0011] In some embodiments, the audio acquisition unit includes an audio acquisition chip and a second filtering circuit connected to the audio acquisition chip; The input terminal of the audio acquisition chip is connected to the microphone output interface, the output terminal of the audio acquisition chip is connected to the input terminal of the second filtering circuit, and the output terminal of the second filtering circuit is connected to the input terminal of the signal conversion unit.

[0012] In some embodiments, the audio acquisition chip includes a low-noise amplifier.

[0013] In some embodiments, the signal conversion unit includes a level conversion chip.

[0014] In some embodiments, the preset component includes at least one of a display, a USB interface, and a SATA interface.

[0015] According to some embodiments, this application also provides a recording and broadcasting device, which includes a preset component and a sleep control circuit provided in the foregoing embodiments. The sleep control circuit is connected to the preset component and is used to control the preset component to enter sleep mode or wake up the preset component.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application.

[0017] The embodiments of this application may have, or at least have, the following advantages: This embodiment of the application sets up a detection module and introduces a signal conversion unit within the detection module. This converts the ambient audio signal acquired by the audio acquisition unit into an analog level signal, which is then output to the main control module. This allows the main control module to directly output power control signals based on the analog level signal. In this way, the ambient audio signal participates in the subsequent power control process in the form of a level signal, enabling sound characteristics to serve as a basis for determining activity status. This provides real-time and accurate status information for subsequent sleep control, allowing the power enable chip and power switch to control the power supply status of preset components based on the analog level signal. For example, it can reduce unnecessary power supply and automatically enter sleep mode when there is no activity, thereby saving energy and extending the equipment's lifespan.

[0018] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of this application. The objectives and other advantages of this application can be realized and obtained through the following description. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of a sleep control circuit provided in an embodiment of this application; Figure 2 This is a schematic diagram of another sleep control circuit provided in an embodiment of this application; Figure 3 A circuit schematic diagram of a sleep control circuit provided in an embodiment of this application; Figure 4 A schematic diagram illustrating a sleep control circuit provided in this application for controlling a BUCK power chip U30; Figure 5A schematic diagram illustrating a sleep control circuit provided in this application for controlling a BUCK power chip U9617; Figure 6 A schematic diagram illustrating a sleep control circuit provided in this application for controlling a BUCK power chip U9616; Figure 7 This is a schematic diagram of a hibernation control circuit provided in an embodiment of this application for controlling a USB 3.0 HOST interface. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0023] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first filter circuit may be referred to as a second filter circuit, and similarly, a second filter circuit may be referred to as a first filter circuit. Both the first filter circuit and the second filter circuit are filter circuits, but they are not the same filter circuit.

[0024] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0025] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0026] Scheduled on / off methods are ill-suited to the flexibility of actual teaching activities, such as adding extra classes or ending classes early. This can easily lead to equipment mistakenly going into sleep mode during teaching or continuing to run even when there is no teaching activity, resulting in recording interruptions, increased energy consumption, and wasted equipment resources. Furthermore, traditional solutions do not incorporate the core characteristics of teaching activities (such as the audio signals generated by the teacher during lectures) into their status assessments. They lack real-time monitoring of the actual teaching status, and the accuracy of equipment sleep mode detection is insufficient, still requiring manual intervention to avoid misjudgments. This leads to management inconvenience and makes it difficult to effectively reduce energy consumption.

[0027] Based on this, this application aims to provide a solution that can automatically enter sleep mode or wake up according to the actual usage status of the environment, while effectively avoiding energy waste caused by preset components being in working state for a long time, thereby achieving the goals of energy saving, consumption reduction, extending equipment life, and intelligent management, and reducing manual intervention costs. Details will be elaborated in subsequent embodiments.

[0028] Please combine Figures 1 to 3 This application provides a sleep control circuit, including a detection module, a main control module, and a power control module. The detection module includes an audio acquisition unit and a signal conversion unit. The audio signal terminal of the audio acquisition unit is connected to the input terminal of the signal conversion unit, and the output terminal of the signal conversion unit is connected to the first signal input terminal of the main control module.

[0029] The power control module may specifically include a power enable chip and a power switch. The control terminal of the power enable chip is connected to the power control signal output terminal of the main control module, and the enable signal output terminal of the power enable chip is connected to the control terminal of the power switch. The power switch is located between the power supply and the preset component.

[0030] In the sleep control circuit provided in this application, the audio acquisition unit acquires the on-site audio signal and sends the on-site audio signal to the signal conversion unit. The signal conversion unit converts the on-site audio signal into an analog level signal and sends the analog level signal to the main control module. The main control module outputs a first control signal to the control terminal of the power enable chip according to the analog level signal. The first control signal is used to control the power switch to turn off.

[0031] This sleep control circuit incorporates a detection module with a signal conversion unit to convert the ambient audio signal acquired by the audio acquisition unit into an analog level signal, which is then output to the main control module. This allows the main control module to directly output power control signals based on the analog level signal. In this way, the ambient audio signal participates in the subsequent power control process as an analog level signal, enabling sound characteristics to serve as a basis for determining activity status. This provides real-time and accurate status information for subsequent sleep control, allowing the power enable chip and power switch to control the power supply status of preset components based on the analog level signal. For example, it can reduce unnecessary power supply and automatically enter sleep mode when there is no activity, thereby saving energy, reducing power consumption, and extending the equipment's lifespan.

[0032] For example, when the voltage of the analog level signal output by the signal conversion unit is within a preset sleep voltage range, the main control module can output a first control signal to the control terminal of the power enable chip. Subsequently, the enable signal output terminal of the power enable chip outputs a shutdown signal to the control terminal of the power switch.

[0033] The above is the core idea of ​​this application. The following will combine it with... Figures 1 to 7 The technical solutions in the embodiments of this application will be clearly and completely described.

[0034] It should be noted that, Figures 4 to 7 The diagram shows some components labeled with two or more model numbers in the same location. This labeling method is used to indicate the type of component used at that location and its possible implementations. Take a resistor as an example. Figures 4 to 7 The numbers marked on both ends of the resistor (such as "1", "2") represent the pin numbers of the resistor array. Each pin corresponds to an independent resistor unit on the resistor array, and the two or more marked pins indicate the available resistor units at the corresponding positions. Figures 4 to 7 In this document, the accuracy parameters (such as "5%)" represent the resistance accuracy of a single resistor unit, not a limitation on the entire resistor array. In practical applications, those skilled in the art can adapt the model and accuracy parameters of each component according to work requirements, or select components with the same function. All other embodiments obtained are within the scope of protection of this application.

[0035] Please continue reading. Figures 1 to 3 In some embodiments, the sleep control circuit may also include a wake-up signal triggering unit.

[0036] Specifically, the output of the wake-up signal triggering unit is connected to the second signal input of the main control module. The wake-up signal triggering unit sends a wake-up signal to the main control module. The main control module can output a second control signal to the control terminal of the power enable chip according to the wake-up signal. The second control signal is used to control the power switch to be turned on.

[0037] With the above structure, the power control module can wake up the preset components according to the wake-up signal, so that the preset components can restore power supply in time when needed, ensuring that the equipment can quickly return to normal working state when needed, without affecting the continuity of work tasks (such as teaching recording tasks).

[0038] In the above embodiment, the wake-up signal can be a high-level signal, which is output to the control terminal of the power enable chip to turn on the power switch.

[0039] For example, the wake-up signal triggering unit may include a timed wake-up unit and / or a manual wake-up unit. The timed wake-up unit, for example, is a timer, whose output terminal can output a wake-up signal when a preset time is reached, and send the wake-up signal to the second signal input terminal of the main control module.

[0040] The manual wake-up unit can be, for example, an external push-button switch, one end of which is connected to the second signal input terminal of the main control module. When the push-button switch is triggered, the second signal input terminal receives the corresponding wake-up signal.

[0041] When the main control module receives a wake-up signal through the second signal input terminal, the main control module outputs a second control signal to the control terminal of the power enable chip to turn on the power switch, thereby restoring power supply to the preset components.

[0042] Therefore, the wake-up signal triggering unit can support multiple wake-up signal generation methods, including timed wake-up and manual wake-up, to meet the wake-up needs of different application scenarios. The timed wake-up unit can output a wake-up signal at a preset time, enabling preset components to automatically resume operation when needed; while the manual wake-up unit can be triggered instantly in response to external wake-up commands (such as user operations), generating a wake-up signal so that preset components can quickly start in response to user operations, thereby ensuring the continuity of use of the recording and broadcasting equipment.

[0043] Figure 4 The diagram shows a BUCK power chip U30 that supplies power to a preset component. The enable pin EN of U30 is connected to the EXT_EN signal. As an example, when the power switch is on, EXT_EN is active, causing U30 to conduct and thus restoring power to the preset component.

[0044] In different embodiments of this application, the main control module can employ different circuit implementations to receive analog level signals and output a first control signal to the power control module. The implementation methods of the main control module will be described below with reference to specific embodiments.

[0045] For example, the main control module can be implemented using an integrated controller, such as a microcontroller. In some embodiments, the main control module may specifically include a microcontroller, which has a first signal input terminal, a second signal input terminal, and a power control signal output terminal.

[0046] It is understood that a microcontroller includes general-purpose input / output (GPIO) ports. The first control signal can be transmitted to the control terminal of the power enable chip through the GPIO port. In addition, the microcontroller can also communicate with the control terminal of the power enable chip through other communication interfaces, such as the Universal Asynchronous Receiver / Transmitter (UART) interface and the Inter-Integrated Circuit Communication (I2C) interface, etc., and this application embodiment does not specifically limit this.

[0047] Please see Figure 3 In some more specific embodiments, the microcontroller can be implemented using a microcontroller unit (MCU). In this case, the ambient audio signal can be transmitted to the MCU's analog-to-digital converter (ADC) pin. As an example, the MCU can sample the ambient audio signal at, for example, a sampling frequency of 1 Hz to reduce the additional power consumption caused by frequent sampling.

[0048] In the above embodiment, when the timer wake-up unit reaches the preset time, it can output a wake-up signal to the MCU, so that the MCU outputs a second control signal to the power enable chip to control the power switch to be turned on, thereby restarting the peripheral power supply, so that the recording and broadcasting equipment can automatically recover from the sleep state to the normal working state.

[0049] In the above embodiment, the manual wake-up unit (e.g., an external push-button switch) can be connected to the IO EN pin of the MCU, which serves as the second signal input terminal of the main control module. When the user presses the push-button switch, the IO EN pin receives a high-level signal. Upon receiving this high-level signal, the MCU immediately outputs a second control signal to the control terminal of the power enable chip to turn on the power switch, thereby restoring power supply to the preset components and achieving rapid wake-up of the recording and broadcasting equipment.

[0050] For example, the main control module can also be implemented using a control circuit composed of circuit devices, such as comparing analog level signals through a comparator circuit and outputting a first control signal based on the comparison result.

[0051] In some embodiments, the main control module includes a first comparator and a second comparator. The first input terminal of the first comparator serves as the first signal input terminal of the main control module, the second input terminal of the first comparator receives a first reference signal, and the output terminal of the first comparator serves as the first control signal output terminal of the main control module, used to output a first control signal. The first output terminal of the second comparator serves as the second signal input terminal of the main control module, the second input terminal of the second comparator receives a second reference signal, and the output terminal of the second comparator serves as the second control signal output terminal of the main control module, used to output a second control signal. The first power control signal output terminal and the second power control signal output terminal together constitute the power control signal output terminal of the main control module.

[0052] In the above embodiment, the detection module converts the on-site audio signal into an analog level signal and transmits it to the first comparator. The wake-up signal triggering unit transmits the wake-up signal to the second comparator. The first comparator and the second comparator compare the analog level signal and the wake-up signal based on the corresponding reference signals, and output the first control signal and the second control signal according to the comparison results.

[0053] In some embodiments, the main control module further includes a first filtering circuit, the input of which is connected to the output of the wake-up signal triggering unit, and the output of which is connected to the second signal input of the main control module.

[0054] In the above embodiment, the wake-up signal output by the wake-up signal triggering unit is de-jittered using the first filtering circuit, and the de-jittered wake-up signal is sent to the main control module.

[0055] As an example, such as Figure 4 As shown, the first filtering circuit can be specifically represented as an RC circuit consisting of resistor R9343 and capacitor C608. When the wake-up signal trigger unit outputs a wake-up signal, the wake-up signal first enters this RC circuit. The capacitor's charging and discharging process filters out rapidly changing signals, thus preventing false wake-ups caused by button bounce or accidental presses. For example, even if an external button switch is accidentally pressed once, the main control module will only successfully recognize it after the wake-up signal has remained stable for approximately 100ms. This effectively improves the reliability of the wake-up signal, especially helping to ensure the stability and accuracy of the sleep control circuit in manual wake-up scenarios.

[0056] In some embodiments, the audio acquisition unit of the detection module may specifically include an audio acquisition chip and a second filtering circuit connected to the audio acquisition chip.

[0057] The audio acquisition chip's input is connected to the microphone output interface, the audio acquisition chip's output is connected to the input of the second filtering circuit, and the second filtering circuit's output is connected to the input of the signal conversion unit.

[0058] In some embodiments, the audio acquisition chip may specifically include a low-noise amplifier (LNA). The low-noise amplifier is capable of amplifying weak ambient audio signals (e.g., approximately -40dBm to -20dBm) to a range of signals that can be processed by subsequent circuitry (also known as the "detectable range").

[0059] For example, the audio acquisition chip may include the PT5108E23E chip, but is not limited to this.

[0060] As an example, a microphone can be used to capture live audio signals, which are then transmitted to an audio acquisition chip via the microphone's output interface. The low-noise amplifier in the audio acquisition chip amplifies the live audio signal and sends the amplified signal to a second filtering circuit. The second filtering circuit acquires the amplified live audio signal, performs noise cancellation on it, and then sends the noise-cancelled live audio signal to a signal conversion unit.

[0061] In some embodiments, the signal conversion unit includes a level conversion chip.

[0062] For example, the level conversion chip may include the TMI3494 chip. The filtered ambient audio signal can be input to the TMI3494 chip, which converts the amplitude of the filtered ambient audio signal into an analog level signal in the range of 0V to 3.3V. For example, the volume in a teaching scenario may correspond to about 1.2V, while the mute state may correspond to about 0.1V.

[0063] Please continue reading. Figure 3 In some more specific embodiments, the power enable chip may include a SY8089 chip, and the power switch may include a TMI6240 chip. The main control module can output a low-level control signal as a first control signal. After receiving the first control signal, the SY8089 power enable chip turns off the enable terminal of the TMI6240 chip connected to it, thereby cutting off the power supply to the preset components, leaving only the detection module and the main control module to continue operating, so that the device enters a low-power sleep state.

[0064] Figure 5 The diagram shows a BUCK power chip U9617 that supplies power to a preset component. The enable pin EN of U9617 is connected to the SYSPWR_EN_H signal. As an example, when the TMI3494 chip outputs a low level, the main control module outputs a low level to the SY8089 chip. After receiving the first control signal, the SY8089 chip disables the enable pin of the TMI6240 chip connected to it, causing the SYSPWR_EN_H signal to switch to a low level. This shuts down U9617, thereby cutting off the power supply to the preset component.

[0065] The second filter circuit can be, for example, Figure 5 The circuit shown is an RC filter circuit composed of resistor R5348 and capacitor C1491. The amplified ambient audio signal can be filtered by the RC filter circuit composed of resistor R5348 and capacitor C1491 to reduce the influence of background noise such as air conditioner noise and footsteps.

[0066] The following description, using specific application scenarios, exemplifies the operation of the aforementioned sleep control circuit to help those skilled in the art understand its function in actual use. This description of the operation is not intended to limit the structure of the sleep control circuit itself, nor does it constitute a limitation on the scope of protection defined by the claims. Those skilled in the art can adjust or change the relevant operation process according to actual application needs without departing from the technical solution of this application.

[0067] As an example, the detection module acquires the ambient audio signal and sends it to the main control module after signal conversion. The main control module can compare the analog level signal corresponding to the ambient audio signal with a preset range to determine whether the conditions for entering sleep mode are met. When the comparison result indicates that the sleep conditions are met, the main control module controls the preset components to enter sleep mode through the power control module.

[0068] In the example above, the sleep control circuit can acquire ambient audio signals through a detection module to accurately identify the environmental activity status (e.g., the actual usage status of the classroom). The main control module then compares the ambient audio signals with a preset range to determine in real time whether the sleep conditions have been met, and automatically enters sleep mode based on the actual environmental usage status. This reduces unnecessary power supply, allowing the circuit to automatically enter sleep mode when there is no activity (e.g., no teaching activities), effectively avoiding energy waste caused by pre-installed components remaining in operation for extended periods. This achieves the goals of energy saving, extending equipment lifespan, and intelligent management.

[0069] Because the sleep control circuit can promptly shut down preset components when it detects no activity in the environment (such as no teaching activities), the recording and broadcasting equipment operates in a low-power state when idle, significantly reducing the heat and workload caused by prolonged power-on of its internal electronic components. This slows down the aging of internal components, thus helping to extend the lifespan of the recording and broadcasting equipment.

[0070] In some embodiments, the main control module can determine that the conditions for entering a sleep state are met if it detects that the ambient audio signal is below a preset threshold and remains so for a preset duration. For example, when the main control module detects that the audio level is below a preset threshold (e.g., about 0.5V) and remains so for a preset duration (e.g., about 5 minutes), it outputs a first control signal to the power control module.

[0071] For example, the preset components involved in this application can be non-core components in the recording and broadcasting equipment that can be turned off in the sleep state. Non-core components do not need to maintain continuous power supply when the equipment is inactive. By cutting off their power supply during sleep, overall energy consumption can be reduced and unnecessary device load can be reduced.

[0072] In some embodiments, the preset components include at least one of a display, a USB interface, and a SATA interface (used to connect peripheral storage devices such as hard disks or solid-state drives to the device for data storage and retrieval), but are not limited thereto. For example Figure 6 The circuit shown will accept a higher input voltage (such as...) Figure 6 The 24V marked in the middle is converted to a lower and more stable output voltage (such as...). Figure 6 The 5V marked in the figure is used to power the USB interface.

[0073] Specifically, Figure 6 The diagram shows a BUCK power chip U9616 that supplies power to a preset component, and a power switch U5103. The switching node SW of U9617 is connected to the power switch U5103. As an example, the on / off state of the power switch U5103 can be controlled by a control signal output from the main control module. After receiving the control signal from the main control module, the power switch U5103 controls the state of U9616, thereby switching the power supply state of the preset component.

[0074] For example, the USB interface may include a USB 3.0 HOST interface, which can be used to connect and control external devices such as USB flash drives and keyboards in the recording and broadcasting equipment. Figure 7 The diagrams show the power switch and control circuit schematics for some examples of USB 3.0 HOST interfaces. For example... Figure 7 As shown, U2501 is a device for load current limiting control of USB interface. The power supply enable of USB3.0 HOST interface can be controlled by MCU GPIO pins (e.g. USB_HOST_PWREN_H, corresponding to GPIO2_B6_d).

[0075] When the recording device enters sleep mode, the MCU can output a low level through the GPIO pin to turn off the power supply to the USB interface, so as to avoid the peripheral device from continuously consuming power when it is not in use.

[0076] In addition, in some embodiments, the preset components may also include a switch related to network connectivity for control, such as a USB wireless network module (USB WIFI module), to improve the rapid response capability of the recording and broadcasting equipment during sleep and wake-up processes.

[0077] For example, the reset signal of the USB wireless network module can be controlled by another GPIO pin of the MCU (e.g., GPIOD_C0_d). When the recording device is woken up from the sleep state, the MCU can use the GPIOD_C0_d pin to wake up the USB wireless network module to ensure that the device can quickly resume network connectivity after waking up.

[0078] As an example, the display may specifically include an OLED display. This OLED display can establish a communication connection with the MCU via an I2C bus and display the device's current operating mode and audio level information in real time according to the MCU's control instructions.

[0079] As an example, when the device enters sleep mode, the OLED display can show "Sleep Mode | Current Level: 0.1V" to indicate that the current environment is in a silent or low-activity state; after the device is woken up, the OLED display can show "Wake-up Mode | Current Level: 1.3V" so that maintenance personnel can intuitively understand the device's operating status and improve the efficiency of device maintenance.

[0080] In some more specific embodiments, the aforementioned timed wake-up unit can be configured through the interactive interface of the display so that the user can set the timed wake-up time, such as a preset time point like "wake up at 8:00 the next day".

[0081] It should be noted that the selection of various components (such as U9616, U5103, U9617, U2501, U30, etc.) is only illustrative and used to illustrate some specific implementation methods of the power supply circuit of the power control module and preset components. Their selection and pin definitions are not the focus of this application, and can be found in relevant technical understandings, so they will not be elaborated further here.

[0082] It is understood that the sleep control circuit of this application may also include other existing functional modules that support the operation of the sleep control circuit. The sleep control circuits shown in the accompanying drawings are merely examples and should not be construed as limiting the scope of the embodiments of this application.

[0083] Based on the same concept, this application also provides a recording and broadcasting device. This recording and broadcasting device includes preset components and the sleep control circuit provided in the foregoing embodiments. Therefore, the recording and broadcasting device can also achieve the technical effects that the aforementioned sleep control circuit can achieve, and will not be described in detail here.

[0084] Specifically, the sleep control circuit is connected to a preset component and is used to control the preset component to enter sleep mode or wake up the preset component. The sleep control circuit provided in the aforementioned embodiment has a simple overall structure, clear control logic, is easy to implement, and has a low cost, making it particularly suitable for widespread application in recording and broadcasting equipment in various smart classrooms.

[0085] In the description of this specification, references to terms such as "some embodiments," "as an example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sleep control circuit, characterized in that, It includes a detection module, a main control module, and a power control module. The detection module includes an audio acquisition unit and a signal conversion unit. The audio signal terminal of the audio acquisition unit is connected to the input terminal of the signal conversion unit, and the output terminal of the signal conversion unit is connected to the first signal input terminal of the main control module. The power control module includes a power enable chip and a power switch. The control terminal of the power enable chip is connected to the power control signal output terminal of the main control module, and the enable signal output terminal of the power enable chip is connected to the control terminal of the power switch. The power switch is located between the power supply and the preset component. The audio acquisition unit acquires on-site audio signals and sends them to the signal conversion unit. The signal conversion unit converts the on-site audio signals into analog level signals and sends the analog level signals to the main control module. The main control module outputs a first control signal to the control terminal of the power enable chip based on the analog level signals. The first control signal is used to control the power switch to turn off.

2. The sleep control circuit according to claim 1, characterized in that, The sleep control circuit also includes a wake-up signal triggering unit, the output of which is connected to the second signal input of the main control module. The wake-up signal triggering unit sends a wake-up signal to the main control module. The main control module outputs a second control signal to the control terminal of the power enable chip according to the wake-up signal. The second control signal is used to control the power switch to be turned on.

3. The sleep control circuit according to claim 2, characterized in that, The main control module includes a microcontroller, which has a first signal input terminal, a second signal input terminal, and a power control signal output terminal.

4. The sleep control circuit according to claim 2, characterized in that, The power control signal output terminal includes a first power control signal output terminal and a second power control signal output terminal. The main control module includes: A first comparator, wherein the first input terminal of the first comparator corresponds to the first signal input terminal, the second input terminal of the first comparator receives the first reference signal, and the output terminal of the first comparator corresponds to the first control signal output terminal; The second comparator has a first output terminal corresponding to the second signal input terminal, a second reference signal input at its second input terminal, and an output terminal corresponding to the second control signal output terminal.

5. The sleep control circuit according to claim 2, characterized in that, The main control module further includes a first filtering circuit, the input of which is connected to the output of the wake-up signal triggering unit, and the output of which is connected to the second signal input of the main control module.

6. The sleep control circuit according to claim 1, characterized in that, The audio acquisition unit includes an audio acquisition chip and a second filtering circuit connected to the audio acquisition chip; The input terminal of the audio acquisition chip is connected to the microphone output interface, the output terminal of the audio acquisition chip is connected to the input terminal of the second filtering circuit, and the output terminal of the second filtering circuit is connected to the input terminal of the signal conversion unit.

7. The sleep control circuit according to claim 6, characterized in that, The audio acquisition chip includes a low-noise amplifier.

8. The sleep control circuit according to claim 1, characterized in that, The signal conversion unit includes a level conversion chip.

9. The sleep control circuit according to any one of claims 1 to 8, characterized in that, The preset components include at least one of a display, a USB interface, and a SATA interface.

10. A recording and broadcasting device, characterized in that, The recording and broadcasting device includes a preset component and a sleep control circuit as described in any one of claims 1 to 9, wherein the sleep control circuit is connected to the preset component and is used to control the preset component to enter sleep mode or wake up the preset component.

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