Earphone with rest reminding function and circuit thereof

Abstract

The utility model provides an earphone with a rest reminding function and a circuit thereof, the earphone circuit comprises a real-time timing module, a main control module, an audio control module and an audio output module, and the audio control module comprises a volume control unit and a switch unit. The real-time timing module is used for carrying out song listening timing, and when a preset time threshold value is reached, time information is sent to the main control module; and the main control module generates control information according to the time information, sends the control information to the audio control module, controls the output volume of the audio output module through the volume control unit, and controls the on-off of the switch unit. According to the invention, the earphone can be correspondingly controlled when the use time of the user exceeds the preset time threshold value, so that the hearing of the user is protected, and hearing damage caused by long-time use of the earphone of the user is avoided.

Description

Technical Field

[0001] This application relates to the field of headphone technology, and in particular to a headphone with a rest reminder function and its circuit. Background Technology

[0002] Headphones are devices that convert electrical signals into sound signals. They are widely used in personal audio devices such as mobile phones, music players, and computers to achieve a personalized audio experience. Using headphones in public places (such as libraries and offices) allows you to focus on your task without disturbing those around you. Some headphones with noise cancellation can also reduce external noise interference and enhance immersion.

[0003] However, using headphones can indeed affect hearing, especially if used at high volume for extended periods. Users often forget the time and need to rest while using headphones, which can lead to hearing damage over time. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application proposes a pair of headphones and its circuitry with a rest reminder function, aiming to solve the problem of users forgetting to rest after using headphones for too long.

[0005] To achieve the above objectives, the first aspect of this application provides a headphone circuit with hearing protection function. The headphone circuit includes: a real-time timing module, a main control module, an audio control module, and an audio output module. The audio control module includes a volume control unit and a switch unit.

[0006] The main control module is connected to the real-time timing module and the audio control module respectively;

[0007] The volume control unit is used to adjust the volume, and the switch unit is used to control the headphone switch; the real-time timing module is used to time music playback, and when a preset time threshold is reached, it sends time information to the main control module; the time threshold includes a first time threshold and a second time threshold, the first time threshold being less than the second time threshold, and the time information includes first time information corresponding to the first time threshold and second time information corresponding to the second time threshold;

[0008] The audio control module is connected to the audio output module;

[0009] The main control module is used to generate control information based on the time information and send the control information to the audio control module. The control information includes first control information and second control information. The first control information is generated based on the first time information, and the second control information is generated based on the second time information. The volume control unit controls the output volume of the audio output module based on the first control information, and the switch unit performs on / off control based on the second control information.

[0010] According to embodiments of this application, some headphone circuits with hearing protection functions are provided, and the headphone circuits further include:

[0011] The reminder module is connected to the real-time timing module;

[0012] The reminder module is used to receive first time information and second time information sent by the real-time timing module, and to broadcast a first reminder based on the first time information and a second reminder based on the second time information.

[0013] According to embodiments of this application, some headphone circuits with hearing protection functions include a real-time timing module comprising:

[0014] The RTC chip unit is used for real-time timing and generating and outputting time information when the preset time threshold is reached. The signal output pin of the RTC chip is connected to the main control module.

[0015] A power control unit, comprising a power management IC, wherein the power output pin of the power management IC is connected to the power input pin of the RTC chip unit, and the power input pin of the power management IC is connected to a power source.

[0016] According to some headphone circuits with hearing protection function provided in the embodiments of this application, the power control unit further includes a first pull-up resistor, a second pull-up resistor, and a power filter capacitor;

[0017] One end of the first pull-up resistor is connected to the power supply, and the other end is connected to the power input pin of the RTC chip unit and the power output pin of the power management IC.

[0018] One end of the second pull-up resistor is connected to the power supply, and the other end is connected to the power input pin of the RTC chip unit and the power output pin of the power management IC.

[0019] One end of the power filter capacitor is connected to the power input pin of the power management IC, and the other end is connected to the reference ground.

[0020] According to embodiments of this application, some headphone circuits with hearing protection functions are provided. The switching unit includes a transistor switch, the source of which is connected to a power supply, the drain of which is connected to the audio output module, and the gate of which is connected to the main control module for receiving second control information.

[0021] According to some headphone circuits with hearing protection function provided in the embodiments of this application, the switching unit further includes a first switching filter capacitor, a second switching filter capacitor, a switching protection resistor, and a third pull-up resistor;

[0022] One end of the first switch filter capacitor is connected to the source of the transistor switch, and the other end is connected to the reference ground; one end of the second switch filter capacitor is connected to the drain of the transistor switch, and the other end is connected to the reference ground; the source of the transistor switch is connected to the power supply through the switch protection resistor; the gate of the transistor switch is connected to the main control module through the third pull-up resistor.

[0023] According to embodiments of this application, some headphone circuits with hearing protection functions are provided. The volume control unit includes a volume control chip. The input pin of the volume control chip is connected to the main control module. The first control information is input through the input pin of the volume control chip, and the output pin of the volume control chip is connected to the audio output module.

[0024] According to some headphone circuits with hearing protection function provided in the embodiments of this application, the volume control unit further includes a path selection chip, which is used to select different audio signal paths, and the output pin of the path selection chip is connected to the audio output module.

[0025] According to some headphone circuits with hearing protection functions provided in embodiments of this application, the volume control unit further includes:

[0026] The filtering module includes a volume filtering resistor and a volume filtering capacitor; one end of the volume filtering resistor is connected to the power supply, and the other end is connected to the power input pin of the volume control chip; one end of the volume filtering capacitor is connected to the power supply, and the other end is connected to the reference ground.

[0027] Secondly, embodiments of this application provide an earphone, which includes an earphone circuit with hearing protection function as described in the first aspect above.

[0028] This application provides an earphone and its circuit with a rest reminder function. The earphone circuit includes: a real-time timing module, a main control module, an audio control module, and an audio output module. The audio control module includes a volume control unit and a switch unit. The real-time timing module is used to time music playback. When a preset time threshold is reached, it sends time information to the main control module. The time threshold includes a first time threshold and a second time threshold, where the first time threshold is less than the second time threshold. The time information includes first time information corresponding to the first time threshold and second time information corresponding to the second time threshold. The main control module generates control information based on the time information and sends the control information to the audio control module. The control information includes first control information and second control information, where the first control information is generated based on the first time information and the second control information is generated based on the second time information. The volume control unit controls the output volume of the audio output module based on the first control information, and the switch unit controls the on / off state based on the second control information. This allows for corresponding control of the earphone when the user's usage time exceeds the preset time threshold, thereby protecting the user's hearing and preventing hearing damage caused by prolonged earphone use. Attached Figure Description

[0029] Figure 1 This application provides a schematic diagram of the structure of an earphone circuit with hearing protection function.

[0030] Figure 2 A circuit diagram of a real-time timing module provided in an embodiment of this application;

[0031] Figure 3 A circuit diagram of a volume control unit provided in an embodiment of this application;

[0032] Figure 4 This is a circuit diagram of a switching unit provided in an embodiment of this application. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0034] It should be noted that, 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 embodiments of this application only and is not intended to limit this application.

[0035] Headphones are devices that convert electrical signals into sound signals. They are widely used in personal audio devices such as mobile phones, music players, and computers to achieve a personalized audio experience. Using headphones in public places (such as libraries and offices) allows you to focus on your task without disturbing those around you. Some headphones with noise cancellation can also reduce external noise interference and enhance immersion.

[0036] Currently, headphones are mainly divided into in-ear headphones and over-ear headphones. In-ear headphones are inserted directly into the user's ear canal, so they are also called earbud headphones. Because they fit snugly in the ear canal, in-ear headphones usually provide better sound isolation, reducing interference from external noise. These headphones are small and easy to carry. Over-ear headphones cover the entire ear or fit on the outside of the ear. Due to their larger sound units, over-ear headphones often provide a more natural and richer sound quality experience and are usually designed to be more comfortable, suitable for wearing for a long time. Closed-back over-ear headphones have a good sound isolation effect, while open-back over-ear headphones allow ambient sound to seep in, making them suitable for home use. Compared to in-ear headphones, over-ear headphones are larger and less portable, but some products are designed to be foldable for easy carrying.

[0037] However, using headphones can indeed affect hearing, especially when users use them at high volumes for extended periods. Because users easily lose track of time and neglect necessary rest breaks when enjoying music, watching videos, or engaging in other entertainment activities, this is a very common occurrence in daily life. Prolonged exposure to this environment can lead to hearing damage. High volume is one of the main causes of hearing loss; using headphones continuously for too long without giving the ears adequate rest increases the risk of hearing damage. Even temporary exposure to high-intensity sound environments can damage the hair cells in the cochlea, thus affecting hearing.

[0038] Currently, in related technologies, headphones are only used for audio playback. Considering users' hearing health, there is an urgent need for headphones that can provide rest reminders.

[0039] Based on this, this application provides an earphone and its circuit with a rest reminder function, which can keep track of time in real time and control the earphone when the user uses it for a long time to avoid causing hearing damage to the user.

[0040] Please refer to Figure 1 This is a schematic diagram of a headphone circuit with hearing protection function provided in an embodiment of this application. Figure 1As shown in the embodiments of this application, the provided headphone circuit 100 with hearing protection function may include, but is not limited to: a real-time timing module 110, a main control module 120, an audio control module 130, and an audio output module 140, wherein the audio control module includes a volume control unit 131 and a switch unit 132.

[0041] The main control module 120 is connected to the real-time timing module 110 and the audio control module 130 respectively;

[0042] The volume control unit 131 is used to adjust the volume, and the switch unit 132 is used to control the headphone switch; the real-time timing module 110 is used to time the music playback, and when the preset time threshold is reached, it sends the time information to the main control module 120; the preset time threshold includes a first time threshold and a second time threshold, the first time threshold is less than the second time threshold, and the time information includes the first time information corresponding to the first time threshold and the second time information corresponding to the second time threshold.

[0043] It is understood that in this embodiment of the application, the audio control module 130 is connected to the audio output module 140; the audio control module 130 controls the audio output module 140.

[0044] It should be noted that in this embodiment of the application, a preset time threshold is set for headphone control. The preset time threshold is divided into a first time threshold and a second time threshold according to the appropriate usage time, and the first time threshold is less than the second time threshold.

[0045] When the first time threshold is reached, it means that the user's usage time may cause hearing damage, but there is still a certain amount of time before the mandatory rest time is required. At this time, simply reduce the headphone volume so that the user will not suffer damage due to prolonged use of high headphone volume.

[0046] When the second time threshold is reached, the user has already used the headphones for a period of time that requires mandatory rest. If the user continues to use the headphones, it will likely cause hearing damage, and a rest is necessary.

[0047] When the real-time timing module 110 reaches the corresponding preset time threshold, it will send the corresponding time information to the main control module 120, thereby enabling the main control module 120 to perform the corresponding control operation.

[0048] For example, in a feasible embodiment of this application, the second time threshold is set to 60 minutes, and the first time threshold is set to half of the second time threshold, i.e., 30 minutes. The real-time timing module 110 starts timing from when the headphone is powered on. When the usage time reaches the first time threshold, the real-time timing module 110 sends the first time information to the main control module 120. When the usage time reaches the second time threshold, the real-time timing module 110 sends the second time information to the main control module 120.

[0049] It should be noted that in this embodiment, the first time threshold can be further subdivided. Since the first time information corresponding to the first time threshold is used to instruct the main control module 120 to control the volume control unit 131, the first time information can be generated according to the subdivided first time threshold. Each time the first time information is output, the main control module 120 is instructed to reduce the headphone playback volume once through the volume control unit 131.

[0050] In this embodiment, the real-time timing module 110 monitors the time and performs a timing function. When the user uses the headphones, the usage time is accurately calculated. When the first time threshold and the second time threshold are reached, the time information is sent to the main control module to achieve corresponding control to protect the user's hearing.

[0051] The main control module 120 is used to generate control information based on time information and send the control information to the audio control module 130. The control information includes first control information and second control information. The first control information is generated based on the first time information and the second control information is generated based on the second time information. The volume control unit 131 controls the output volume of the audio output module 140 based on the first control information, and the switch unit 132 performs on / off control based on the second control information.

[0052] For example, in this embodiment of the application, when the main control module 120 receives the first time information, it generates the first control information and sends it to the audio control module 130. Since the first time information is the time information sent by the real-time timing module 110 when the timing reaches the first time threshold, the user's use of the headphones has not yet reached the time when a forced rest is required. Therefore, the volume control unit 131 in the audio control module 130 controls the audio output module to reduce the volume according to the first control information, so that the volume output by the user's headphones is in a safe state.

[0053] In another embodiment of this application, multiple first time thresholds are set, and the first time information corresponds to the first time threshold. That is, when the timer starts at 30 minutes, a first time threshold is set every 10 minutes. That is, when the timer reaches 30 minutes, the real-time timing module 110 sends a first time information to the main control module 120 every 10 minutes. After receiving the first time information, the main control module 120 generates first control information and sends it to the audio control module 130. When the volume control unit in the audio control module 130 receives the first control information, it controls the audio output module to reduce the volume accordingly.

[0054] Understandably, when multiple first time thresholds are set, the volume control unit 131 can be configured to quantitatively reduce the volume of the audio output module according to the first control information. For example, each time the first time threshold is reached, after the main control module 120 receives the first time information, it generates the first control information and sends it to the audio control module 130. Then, the volume control unit 131 controls the audio output module 140 to reduce the output volume by 10% according to the first control information, thereby achieving the effect of protecting the user's hearing.

[0055] In another embodiment of this application, after the main control module 120 receives the second time information, it generates second control information and sends it to the audio control module 130. The second time information is the time information sent by the real-time timing module 110 when the timing reaches the second time threshold. At this time, the user's use of the headphones has reached the time when a forced rest is required. Therefore, the switch unit 132 in the audio control module 130 disconnects the power supply of the audio output module 140 according to the second control information and turns off the headphones, thereby reminding the user to take off the headphones and rest.

[0056] In this embodiment, the real-time timing unit 110 times the duration of the user's use of the headphones, sets a first time threshold and a second time threshold, and when the duration of the user's use of the headphones exceeds the corresponding preset time threshold, the real-time timing unit 110 sends time information to the main control module 120, the main control module 120 generates corresponding control information and sends it to the audio control module 130, and the audio control module 130 controls the audio output module 140, thereby realizing the function of protecting the user's hearing and avoiding hearing damage caused by prolonged use of headphones.

[0057] It should be noted that, in this embodiment of the application, the headphone circuit further includes:

[0058] Reminder module 150, which is connected to real-time timing module 110;

[0059] The reminder module 150 is used to receive the first time information and the second time information sent by the real-time timing module 110, and to broadcast the first reminder based on the first time information and the second reminder based on the second time information.

[0060] It is understood that in this embodiment of the application, the first time information corresponds to the first time threshold. When the reminder module 150 receives the first time information, the reminder module 150 broadcasts the first reminder, reminding the user of the duration of use and the control operation that the audio control module will perform next. When the reminder module 150 receives the second time information, it reminds the user that the use has been relatively long, and reminds the user to turn off the headphones and take a break.

[0061] Specifically, in one embodiment of this application, after receiving the first time information sent by the real-time timing module 110, the reminder module 150 reminds the user: "The headphones have been used for 30 minutes and will automatically reduce the volume by 10% soon," to remind the user that the headphones have been used for a long time and the headphones will automatically reduce the volume to protect hearing; when the reminder module 150 receives the second time information sent by the real-time timing module 110, it reminds the user: "The usage time is long, please take a break and turn off the headphones," to remind the user to take off the headphones and rest.

[0062] In this embodiment, the reminder module 150 reminds the user to take a break and indicates the operation performed by the headphones, so as to avoid misleading the user into thinking that the headphones are damaged when the headphones automatically control themselves.

[0063] Please refer to Figure 2 The image shows a circuit diagram of a real-time timing module provided in an embodiment of this application. Figure 2 As shown in the embodiment of this application, the circuit of the real-time timing module 110 includes an RTC chip unit and a power control unit:

[0064] The RTC chip unit is U10, which is used for real-time timing and generating and outputting time information when a preset time threshold is reached. The signal output pin of the RTC chip is connected to the main control module 120. The signal output pin is the / INT pin, which outputs time information to the main control module 120.

[0065] The power control unit includes a power management IC. The power output pin of the power management IC is connected to the power input pin of the RTC chip unit, and the power input pin of the power management IC is connected to the power supply.

[0066] The power management IC is U12, with power output pins B1 and B2. Pin B1 is connected to the SDA pin of U10, and pin B2 is connected to the SCL pin of U10. U12 outputs stable power to U10 through pins B1 and B2, enabling U10 to receive a stable voltage for operation. The power input pin of the power management IC is VCCB. Through VCCB, the power supply is connected, and the power management IC can convert the power supply into a stable voltage.

[0067] Real-time timing functionality is achieved through a real-time timing module.

[0068] It should be noted that, as Figure 2 As shown in the embodiment of this application, the power control unit further includes a first pull-up resistor R41, a second pull-up resistor R42, and a power filter capacitor C58.

[0069] One end of the first pull-up resistor R41 is connected to the power supply, and the other end is connected to the power input pin of the RTC chip unit and the power output pin of the power management IC.

[0070] One end of the second pull-up resistor R42 is connected to the power supply, and the other end is connected to the power input pin of the RTC chip unit and the power output pin of the power management IC.

[0071] One end of the power filter capacitor C58 is connected to the power input pin of the power management IC, and the other end is connected to the reference ground.

[0072] The first pull-up resistor R41 and the second pull-up point group R42 are used to maintain the RTC chip in a high-level state when idle, ensuring that the line is not in an uncertain state, thereby improving the reliability and stability of communication; the power supply filter capacitor C58 is used to filter out noise on the power line, ensuring the stable operation of the RTC chip unit and the power management IC.

[0073] Please refer to Figure 3 This is a circuit diagram of a volume control unit provided in an embodiment of this application, as shown below. Figure 3 As shown in the embodiment of this application, the volume control unit includes a volume control chip U2. The input pins SCL and SDA of the volume control chip U2 are connected to the main control module. The first control information is input through the input pins SCL and SDA of the volume control chip. The output pins VCA1 and VCA2 of the volume control chip U2 are connected to the audio output module.

[0074] When the volume control chip U2 receives the first control information sent by the main control module, it can perform volume adjustment operations and control the audio output module to reduce the output volume through the output pin, thereby protecting the user's hearing.

[0075] It should be noted that, in this embodiment, the volume control unit further includes a path selection chip U11, which is used to select different audio signal paths, such as... Figure 3 As shown, the output pins L and R of the path selection chip U11 are connected to the audio output module.

[0076] Understandably, the path selection chip allows the audio signal output path to be selected, enabling the selection of the left and right channels of the headphones.

[0077] It should be noted that, in this embodiment of the application, the volume control unit further includes:

[0078] The filtering module includes a volume filtering resistor R26 and a volume filtering capacitor C53. One end of the volume filtering resistor R26 is connected to the power supply, and the other end is connected to the power input pin VBAT of the volume control chip U2. One end of the volume filtering capacitor C53 is connected to the power supply, and the other end is connected to the reference ground.

[0079] The voltage of the input volume control chip U2 is kept stable by using the volume filter resistor R26 and the volume filter capacitor C53.

[0080] Please refer to Figure 4 The image shows a circuit diagram of a switching unit provided in an embodiment of this application. Figure 3 As shown, in this embodiment of the application, the switching unit 132 may include, but is not limited to:

[0081] Transistor switch Q1 has its source (S) connected to the power supply, its drain (D) connected to the audio output module 140, and its gate (G) connected to the main control module 120 to receive second control information.

[0082] In this embodiment, when the user's headphone usage time does not reach the second time threshold, the main control module 120 outputs a high level to the gate G of the transistor switch Q1, causing the transistor switch Q1 to be in the conducting state, and the current can be delivered to the audio output module 140 through the transistor switch Q1; when the headphone usage time reaches the second time threshold, the main control module 120 outputs a low level as a second control signal to control the transistor switch Q1 to be turned off, thereby controlling the audio output module 140 to be turned off.

[0083] It should be noted that, in the embodiments of this application, the switching unit further includes a first switching filter capacitor C42, a second switching filter capacitor C51, a switching protection resistor R32, and a third pull-up resistor R34;

[0084] like Figure 4 As shown, one end of the first switch filter capacitor C42 is connected to the source S of the transistor switch Q1, and the other end is connected to the reference ground; one end of the second switch filter capacitor C51 is connected to the drain D of the transistor switch Q1, and the other end is connected to the reference ground; the source G of the transistor switch is connected to the power supply through the switch protection resistor R32; the gate of the transistor switch Q1 is connected to the main control module through the third pull-up resistor R34.

[0085] It is understood that in this embodiment, the filtering function is achieved through the first switch filter capacitor C42 and the second switch filter capacitor C51. The first switch filter capacitor C42 reduces the noise and voltage fluctuation of the voltage entering the transistor switch Q1, and the second switch filter capacitor C52 reduces the voltage fluctuation of the output of the transistor switch Q1. The current flowing through the transistor switch Q1 is controlled by the switch protection resistor R32 to protect the transistor switch Q1 from damage by excessive current. The third pull-up resistor R34 ensures that the transistor switch Q1 is in the off state when it is not activated.

[0086] It is understandable that the power supply used in this application embodiment can be the internal power supply of the headphones or an external power supply. The power supply setting can be selected according to the actual situation, and this application does not impose too many restrictions on the power supply setting.

[0087] This application also provides an earphone, which includes the earphone circuit with hearing protection function proposed in any embodiment of this application.

[0088] 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 in 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.

[0089] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, the simultaneous existence of A and B, or the existence of B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c can represent: the existence of a alone, the existence of b alone, the existence of c alone, the simultaneous existence of a and b, the simultaneous existence of a and c, the simultaneous existence of b and c, or the simultaneous existence of a, b, and c, where a, b, and c can be single or multiple.

[0090] In the embodiments of this application, "instruction" can include direct and indirect instructions, as well as explicit and implicit instructions. The information indicated by a certain piece of information is called the information to be instructed. In the specific implementation process, there can be many ways to instruct the information to be instructed, such as, but not limited to, directly instructing the information to be instructed, such as instructing the information to be instructed itself or its index. It can also indirectly instruct the information to be instructed by instructing other information, where there is a relationship between the other information and the information to be instructed. It can also instruct only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing the instruction overhead to some extent.

[0091] In the embodiments of this application, the terms and English abbreviations are exemplary examples given for ease of description and should not be construed as limiting the application in any way. This application does not preclude the possibility of defining other terms that can achieve the same or similar functions in existing or future agreements.

[0092] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0093] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this 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 modifications and improvements all fall within the protection scope of this application.

Claims

1. A headphone circuit with hearing protection function, characterized in that, The headphone circuit includes: a real-time timing module, a main control module, an audio control module, and an audio output module. The audio control module includes a volume control unit and a switch unit. The main control module is connected to the real-time timing module and the audio control module respectively; The volume control unit is used to adjust the volume, and the switch unit is used to control the headphone switch; the real-time timing module is used to time the usage duration, and when the usage duration reaches a preset time threshold, it sends time information to the main control module; the preset time threshold includes a first time threshold and a second time threshold, the first time threshold is less than the second time threshold, and the time information includes first time information corresponding to the first time threshold and second time information corresponding to the second time threshold; The audio control module is connected to the audio output module; The main control module is used to generate control information based on the time information and send the control information to the audio control module. The control information includes first control information and second control information. The first control information is generated based on the first time information, and the second control information is generated based on the second time information. The volume control unit controls the output volume of the audio output module based on the first control information, and the switch unit performs on / off control based on the second control information.

2. The headphone circuit with hearing protection function according to claim 1, characterized in that, The headphone circuit also includes: The reminder module is connected to the real-time timing module; The reminder module is used to receive first time information and second time information sent by the real-time timing module, and to broadcast a first reminder based on the first time information and a second reminder based on the second time information.

3. The headphone circuit with hearing protection function according to claim 1, characterized in that, The real-time timing module includes: The RTC chip unit is used for real-time timing and generating and outputting time information when the preset time threshold is reached. The signal output pin of the RTC chip is connected to the main control module. A power control unit, comprising a power management IC, wherein the power output pin of the power management IC is connected to the power input pin of the RTC chip unit, and the power input pin of the power management IC is connected to a power source.

4. The headphone circuit with hearing protection function according to claim 3, characterized in that, The power control unit also includes a first pull-up resistor, a second pull-up resistor, and a power filter capacitor; One end of the first pull-up resistor is connected to the power supply, and the other end is connected to the power input pin of the RTC chip unit and the power output pin of the power management IC. One end of the second pull-up resistor is connected to the power supply, and the other end is connected to the power input pin of the RTC chip unit and the power output pin of the power management IC. One end of the power filter capacitor is connected to the power input pin of the power management IC, and the other end is connected to the reference ground.

5. The headphone circuit with hearing protection function according to claim 1, characterized in that, The switching unit includes a transistor switch, the source of which is connected to the power supply, the drain of which is connected to the audio output module, and the gate of which is connected to the main control module for receiving second control information.

6. The headphone circuit with hearing protection function according to claim 5, characterized in that, The switching unit also includes a first switching filter capacitor, a second switching filter capacitor, a switching protection resistor, and a third pull-up resistor; One end of the first switch filter capacitor is connected to the source of the transistor switch, and the other end is connected to the reference ground; One end of the second switch filter capacitor is connected to the drain of the transistor switch, and the other end is connected to the reference ground; the source of the transistor switch is connected to the power supply through the switch protection resistor; the gate of the transistor switch is connected to the main control module through the third pull-up resistor.

7. The headphone circuit with hearing protection function according to claim 1, characterized in that, The volume control unit includes a volume control chip. The input pin of the volume control chip is connected to the main control module. The first control information is input through the input pin of the volume control chip, and the output pin of the volume control chip is connected to the audio output module.

8. The headphone circuit with hearing protection function according to claim 7, characterized in that, The volume control unit also includes a path selection chip, which is used to select different audio signal paths. The output pin of the path selection chip is connected to the audio output module.

9. The headphone circuit with hearing protection function according to claim 8, characterized in that, The volume control unit also includes: The filtering module includes a volume filtering resistor and a volume filtering capacitor; one end of the volume filtering resistor is connected to the power supply, and the other end is connected to the power input pin of the volume control chip; one end of the volume filtering capacitor is connected to the power supply, and the other end is connected to the reference ground.

10. An earphone, characterized in that, The headphones include a headphone circuit with hearing protection function as described in any one of claims 1-9.

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