Intelligent earphone and safe power supply method
By incorporating proximity and temperature sensors into smart earphones, the power supply method is controlled based on wearing status and ambient temperature, thus solving the high-temperature problem during charging and improving wearing comfort and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DOLEJIA CO LTD
- Filing Date
- 2026-01-23
- Publication Date
- 2026-04-17
AI Technical Summary
Existing smart headphones are prone to overheating during charging, which can cause user discomfort or even thermal runaway, and their battery life is often insufficient to meet user needs.
By setting up proximity and temperature sensors on smart earphones, the power supply method is controlled according to the wearing status and ambient temperature to avoid the accumulation of heat generated during charging and use, and different charging speeds and power controls are adopted.
This effectively avoids the high temperature problem of smart headphones when worn, improves wearing comfort and safety, and ensures user safety.
Smart Images
Figure CN121888154A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of smart wearable device technology, and in particular to a smart headset and a safe power supply method. Background Technology
[0002] The more functions a smart wearable device has, the higher its power consumption and the greater the heat it generates. The heavier these devices are, the less comfortable they are to wear. Therefore, these devices cannot increase battery life by incorporating large-capacity batteries, even though battery energy density is already nearing saturation. Higher energy density increases the risk of thermal runaway. Electronic products generate significant heat during charging; if charged while in use, the heat generated by the device's operation combined with the heat from charging can lead to high surface temperatures, also posing a risk of thermal runaway. Since smart wearable devices are in close contact with the body, charging while in use can cause discomfort and even low-temperature burns. Furthermore, thermal runaway can cause severe damage. However, the battery life of these devices is often insufficient, making external power supply unavoidable. Therefore, existing smart wearable devices pose a risk of user discomfort and even low-temperature burns, as well as thermal runaway, when charged while in use, leading to safety concerns.
[0003] Application content The main purpose of this application is to propose a smart earphone and a safe power supply method, which aims to solve the problem that existing smart earphones easily generate high temperatures when charging.
[0004] To achieve the above objectives, the smart earphone proposed in this application includes a sound-emitting part, an ear hook, a control part, a connection part, and a charging port; the sound-emitting part and the control part are located at both ends of the ear hook, and the connection part is connected to the control part; the control part contains a battery and a control circuit board; a first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body; the first distance sensor and the second distance sensor are electrically connected to the control circuit board; when worn, the smart earphone has a first wearing state and a second wearing state. In the first wearing state, the ear hook is held on the ear, and the distance from the first distance sensor to the human body is less than the distance from the second distance sensor to the human body; in the second wearing state, the connection part is held on the back of the neck, and the distance from the first distance sensor to the human body is greater than the distance from the second distance sensor to the human body; the control circuit board is used to determine the wearing state based on the first distance sensor and the second distance sensor; when the smart earphone is connected to an external power source and is in the first wearing state, the control circuit board is used to control the external power source not to charge the battery; when the smart earphone is connected to an external power source and is in the second wearing state, the control circuit board is used to control the external power source to charge the battery.
[0005] Preferably, a status indicator light is also provided on the outside of the charging port to indicate when the battery power is low or to indicate different power supply states.
[0006] Preferably, one sound-emitting part, one ear hook part, and one control part are each arranged on the left and right sides. Each sound-emitting part is provided with a first distance sensor, and each control part is provided with a second distance sensor. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors and the two second distance sensors.
[0007] Preferably, the first distance sensor is located at the front end of the sound-emitting part, and the second distance sensor is located at the rear end of the control part.
[0008] Preferably, the first distance sensor is configured as an infrared sensor, a through hole is provided on the inner side of the sound-emitting part, the through hole is covered by a light-transmitting sheet, and the first distance sensor is located on the inner side of the light-transmitting sheet.
[0009] Preferably, the control unit is further provided with a temperature sensor. When the smart earphone is connected to an external power source and is in a second wearing state, the control circuit board is used to control the charging speed of the external power source to the battery based on the temperature signal monitored by the temperature sensor.
[0010] This application also proposes another type of smart earphone, comprising: a sound-emitting part, an ear hook, a control part, a connecting part, and a charging port; the sound-emitting part and the control part are located at both ends of the ear hook, and the connecting part is connected to the control part; the control part contains a battery and a control circuit board; a first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body; the first distance sensor and the second distance sensor are electrically connected to the control circuit board; when worn, the smart earphone has a first wearing state and a second wearing state. In the first wearing state, the ear hook is held on the ear, and the distance from the first distance sensor to the human body is less than the distance from the second distance sensor to the human body; in the second wearing state, the connecting part is held on the back of the neck, and the distance from the first distance sensor to the human body is greater than the distance from the second distance sensor to the human body; the control circuit board is used to determine the wearing state based on the first distance sensor and the second distance sensor, and when connected to an external power source, it is used to control the charging speed of the battery based on the wearing state.
[0011] Preferably, one sound-emitting part, one ear hook part, and one control part are each arranged on the left and right sides. Each sound-emitting part is provided with a first distance sensor, and each control part is provided with a second distance sensor. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors and the two second distance sensors.
[0012] Preferably, the first distance sensor is located at the front end of the sound-emitting part, and the second distance sensor is located at the rear end of the control part.
[0013] Preferably, the first distance sensor is configured as an infrared sensor, a through hole is provided on the inner side of the sound-emitting part, the through hole is covered by a light-transmitting sheet, and the first distance sensor is located on the inner side of the light-transmitting sheet.
[0014] This application also proposes another type of smart earphone, comprising: a sound-emitting part, an ear hook, a control part, a connecting part, and a charging port; the sound-emitting part and the control part are located at both ends of the ear hook, and the connecting part is connected to the control part; the control part contains a battery and a control circuit board; a first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body; the first distance sensor and the second distance sensor are electrically connected to the control circuit board; when worn, the smart earphone has a first wearing state and a second wearing state. In the first wearing state, the ear hook is attached to the ear, and the distance from the first distance sensor to the human body is less than the distance from the second distance sensor to the human body; in the second wearing state, the connecting part is attached to the back of the neck, and the distance from the first distance sensor to the human body is greater than the distance from the second distance sensor to the human body; the control part is also provided with a temperature sensor, and the control circuit board is used to determine the wearing state based on the first distance sensor and the second distance sensor, and when connected to an external power source, it is used to control the charging speed of the battery based on the wearing state and the temperature signal monitored by the temperature sensor.
[0015] Preferably, one sound-emitting part, one ear hook part, and one control part are each arranged on the left and right sides. Each sound-emitting part is provided with a first distance sensor, and each control part is provided with a second distance sensor. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors and the two second distance sensors.
[0016] Preferably, the first distance sensor is located at the front end of the sound-emitting part, and the second distance sensor is located at the rear end of the control part.
[0017] Preferably, the first distance sensor is configured as an infrared sensor, a through hole is provided on the inner side of the sound-emitting part, the through hole is covered by a light-transmitting sheet, and the first distance sensor is located on the inner side of the light-transmitting sheet.
[0018] This application also proposes a safe power supply method for powering smart headphones. The smart headphones include: a sound-emitting part, an ear hook, a control part, a connecting part, and a charging port. The sound-emitting part and the control part are located at both ends of the ear hook, and the connecting part is connected to the control part. The control part contains a battery and a control circuit board. A first distance sensor is provided on the side of the sound-emitting part closest to the human body, and the first distance sensor is electrically connected to the control circuit board. When an external power source is connected to the charging port, the control circuit board acquires the distance signal detected by the first distance sensor and controls the power supply of the external power source according to the distance signal. When the distance from the human body detected by the first distance sensor is less than a first threshold, the control circuit board controls the external power source to only power the smart headphones as a whole and not charge the battery.
[0019] Preferably, a second distance sensor is provided on the side of the control unit closer to the human body; the second distance sensor is electrically connected to the control circuit board, and when the charging port is connected to an external power source, the control circuit board acquires the distance signal monitored by the second distance sensor; when the distance from the human body monitored by the second distance sensor is less than a second threshold, the control circuit board controls the external power source to supply power to the smart earphone as a whole, while also charging the battery.
[0020] Preferably, when the distance to the human body detected by the first distance sensor is not less than a first threshold and the distance to the human body detected by the second distance sensor is not less than a second threshold, the control circuit board controls the external power supply to charge the battery but not to supply power to the smart earphone as a whole.
[0021] Preferably, when the distance to the human body detected by the first distance sensor is not less than a first threshold and the distance to the human body detected by the second distance sensor is not less than a second threshold, the control circuit board controls the battery not to supply power to the smart earphone as a whole.
[0022] This application also proposes another safe power supply method for powering smart headphones. The smart headphones include: a sound-emitting part, an ear hook, a control part, a connection part, and a charging port. The sound-emitting part and the control part are located at both ends of the ear hook, and the connection part is connected to the control part. The control part contains a battery and a control circuit board. A first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body. The first distance sensor and the second distance sensor are electrically connected to the control circuit board. When an external power source is connected to the charging port, the control circuit board acquires signals from the first distance sensor and the second distance sensor, and controls the power supply of the external power source based on the distance signals. When the distance to the human body detected by the first distance sensor is less than a first threshold, the control circuit board controls the power of the external power source charging the battery to be no greater than a first preset value. When the distance to the human body detected by the first distance sensor is not less than the first threshold and the distance to the human body detected by the second distance sensor is less than a second threshold, the control circuit board controls the power of the external power source charging the battery to be no greater than a second preset value. The second preset value is greater than the first preset value.
[0023] Preferably, when the distance to the human body detected by the first distance sensor is not less than a first threshold and the distance to the human body detected by the second distance sensor is not less than a second threshold, the control circuit board does not limit the power of the external power supply to charge the battery.
[0024] This application also proposes another safe power supply method for powering smart headphones. The smart headphones include: a sound-emitting part, an ear hook, a control part, a connection part, and a charging port. The sound-emitting part and the control part are located at both ends of the ear hook, and the connection part is connected to the control part. The control part contains a battery and a control circuit board. A first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body. The control part also contains a temperature sensor. The first distance sensor, the second distance sensor, and the temperature sensor are all electrically connected to the control circuit board. When an external power source is connected to the charging port, the control circuit board acquires signals from the first distance sensor, the second distance sensor, and the temperature sensor, and controls the power supply of the external power source based on the distance and temperature signals. When the distance to the human body detected by the first distance sensor is less than a first threshold, and the temperature detected by the temperature sensor is not greater than a third threshold, the control circuit board controls the power of the external power source to charge the battery to not exceed a first preset value.
[0025] Preferably, when the distance to the human body detected by the first distance sensor is less than a first threshold and the temperature detected by the temperature sensor is greater than a third threshold, the control circuit board controls the external power supply not to charge the battery.
[0026] Preferably, when the distance to the human body detected by the first distance sensor is not less than a first threshold, the distance to the human body detected by the second distance sensor is less than a second threshold, and the temperature detected by the temperature sensor is not greater than a fourth threshold, the control circuit board controls the power of the external power supply to charge the battery to not exceed a second preset value.
[0027] Preferably, when the distance to the human body detected by the first distance sensor is not less than a first threshold, the distance to the human body detected by the second distance sensor is less than a second threshold, and the temperature detected by the temperature sensor is greater than a fourth threshold, the control circuit board controls the external power supply not to charge the battery.
[0028] The technical solution of this application solves the problem that smart headphones are prone to overheating during charging, causing user discomfort or even thermal runaway risk, by setting a distance sensor to monitor the wearing status and controlling the power supply method according to the wearing status. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of the smart earphones proposed in this application in a second wearing state; Figure 2 and Figure 3 This is a schematic diagram of the structure of the smart earphone proposed in this application.
[0031] Explanation of icon numbers:
[0032] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0034] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0035] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0036] Please refer to Figures 1 to 3This application proposes a smart earphone. In one specific embodiment, the smart earphone includes a sound-emitting part 100, an ear hook part 200, a control part 300, a connection part 400, and a charging port 500. The sound-emitting part 100 and the control part 300 are located at both ends of the ear hook part 200, and the connection part 400 is connected to the control part 300. The control part 300 contains a battery and a control circuit board. A first distance sensor 101 is provided on the side of the sound-emitting part 100 closest to the human body, and a second distance sensor 301 is provided on the side of the control part 300 closest to the human body. The first distance sensor 101 and the second distance sensor 301 are electrically connected to the control circuit board. When worn, the smart earphone has a first wearing state and a second wearing state. In the first wearing state, the ear hook part 200 is held on the ear, the sound-emitting part 100 is in contact with the human body, and the control part 400 is connected to the human body. The earphone may be partially or completely fitted to the human body (this may vary depending on the user's head shape). In the first wearing state, the distance from the first distance sensor 101 to the human body is less than the distance from the second distance sensor 301 to the human body. In the second wearing state, the connecting part 400 is held at the back of the neck, with the sound-emitting part 100 located in front of the user's neck and the control part 300 fitting against both sides of the neck. The distance from the first distance sensor 101 to the human body is greater than the distance from the second distance sensor 301 to the human body. The control circuit board is used to determine the wearing state based on the first distance sensor 101 and the second distance sensor 301. When the smart earphone is connected to an external power source and is in the first wearing state, the control circuit board is used to prevent the external power source from charging the battery. When the smart earphone is connected to an external power source and is in the second wearing state, the control circuit board is used to control the external power source to charge the battery. The charging port in this application is interpreted broadly, not just referring to a wired charging socket, but also including magnetic contact charging areas, magnetic wireless charging areas, and other interfaces or areas that can power the smart earphone.
[0037] This application sets distance sensors at different locations on the smart earphones, determines the wearing status based on the data fed back by the distance sensors, and then controls the power supply mode when connecting to an external power source under different wearing statuses through a control circuit board. This avoids charging the battery and powering all working components when plugging in an external power source during normal wear and use, thereby avoiding the superposition of heat generated by charging and heat generated during normal use, and preventing overall high temperature, thus achieving the purpose of not affecting wearing comfort and improving wearing safety.
[0038] In this embodiment, a status indicator light 501 is also provided on the outside of the charging port 500, used to prompt when the battery power is low or to indicate different power supply states. The smart earphone is worn in an ear-hook manner, and one each of the sound-emitting part 100, the ear-hook part 200, and the control part 300 are provided on the left and right sides, connected into a whole by the connecting part 400. Each of the sound-emitting parts is provided with a first distance sensor 101, and each of the control parts 300 is provided with a second distance sensor 301. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors 101 and the two second distance sensors 301. By comprehensively judging the wearing status through the data of two sets of sensors on both sides of the head, the accuracy of the wearing status monitoring can be significantly improved. The first distance sensor 101 is located at the front end of the sound-emitting part 100, and the second distance sensor 301 is located at the rear end of the control part 300. The first distance sensor 101 and the second distance sensor 301 can be set as infrared sensors, which determine the distance to the human body through infrared signals, thereby determining the wearing status. The inner sides of the sound-emitting part 100 and the control part 300 are provided with through holes, and the through holes are covered with light-transmitting sheets. The first distance sensor 101 is located inside the light-transmitting sheet. By placing the sensor at the end, the internal space can be fully utilized, resulting in high internal space utilization. The overall volume of the product will not increase significantly due to the addition of the distance sensor.
[0039] To further improve charging safety, in this embodiment, the control unit 300 is also equipped with a temperature sensor. When the smart earphone is connected to an external power source and is in a second wearing state, the control circuit board controls the charging speed of the external power source to the battery based on the temperature signal monitored by the temperature sensor. The battery temperature is affected not only by charging and discharging but also by the ambient temperature; the higher the ambient temperature, the higher the battery temperature under the same operating conditions. The control circuit board controls the charging speed based on the temperature signal. Those skilled in the art will understand that at higher temperatures, a slower charging speed results in less heat generated during charging, making it less likely for the battery to thermally runaway, thus increasing safety.
[0040] This application also proposes another embodiment of a smart earphone, including a sound-emitting part 100, an ear hook part 200, a control part 300, a connection part 400, and a charging port 500; the sound-emitting part 100 and the control part 300 are located at both ends of the ear hook part 200, and the connection part 400 is connected to the control part 300; the control part 300 is provided with a battery and a control circuit board; a first distance sensor 101 is provided on the side of the sound-emitting part 100 closest to the human body, and a second distance sensor 301 is provided on the side of the control part 300 closest to the human body; the first distance sensor 101 and the second distance sensor 301 are electrically connected to the control circuit board; When worn, the smart earphone has a first wearing state and a second wearing state. In the first wearing state, the ear hook 200 is attached to the ear, and the distance from the first distance sensor 101 to the human body is less than the distance from the second distance sensor 301 to the human body. In the second wearing state, the connecting part 400 is attached to the back of the neck, and the distance from the first distance sensor 101 to the human body is greater than the distance from the second distance sensor 301 to the human body. The control circuit board is used to determine the wearing state based on the first distance sensor 101 and the second distance sensor 301, and when connected to an external power source, it is used to control the charging speed of the battery based on the wearing state.
[0041] Charging speed has a significant impact on heat generation. In this embodiment, the charging speed is controlled according to the wearing status. In the first wearing status of normal use, the control circuit board makes the battery charge slowly to avoid the battery from generating high temperature. In the second wearing status of non-use, the control circuit board makes the battery charge faster to complete charging quickly. Similar to the previous embodiments, in this embodiment, one sound-emitting part 100, one ear hook part 200, and one control part 300 are each provided on the left and right sides. Each sound-emitting part is provided with a first distance sensor 101, and each control part 300 is provided with a second distance sensor 301. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors 101 and the two second distance sensors 301. The first distance sensor 101 is located at the front end of the sound-emitting part 100, and the second distance sensor 301 is located at the rear end of the control part 300. The first distance sensor 101 is an infrared sensor. A through hole is provided inside the sound-emitting part 100, and the through hole is covered with a light-transmitting sheet. The first distance sensor 101 is located inside the light-transmitting sheet.
[0042] This application also proposes another embodiment of a smart earphone, including a sound-emitting part 100, an ear hook part 200, a control part 300, a connecting part 400, and a charging port 500; the sound-emitting part 100 and the control part 300 are located at both ends of the ear hook part 200, and the connecting part 400 is connected to the control part 300; a battery and a control circuit board are disposed inside the control part 300; a first distance sensor 101 is disposed on the side of the sound-emitting part 100 closest to the human body, and a second distance sensor 301 is disposed on the side of the control part 300 closest to the human body; the first distance sensor 101 and the second distance sensor 301 are electrically connected to the control circuit board; when worn, the smart earphone has a first wearing function. The system has two wearing states: a first wearing state, in which the ear hook 200 is attached to the ear and the distance from the first distance sensor 101 to the human body is less than the distance from the second distance sensor 301 to the human body; and a second wearing state, in which the connecting part 400 is attached to the back of the neck and the distance from the first distance sensor 101 to the human body is greater than the distance from the second distance sensor 301 to the human body. The control part 300 is also equipped with a temperature sensor. The control circuit board is used to determine the wearing state based on the first distance sensor 101 and the second distance sensor 301, and when connected to an external power source, it is used to control the charging speed of the battery based on the wearing state and the temperature signal monitored by the temperature sensor.
[0043] In this embodiment, the charging speed is jointly controlled by monitoring data from temperature and distance sensors. Under normal wearing conditions, a higher charging speed can be used if the temperature is low, and a lower charging speed can be used if the temperature is high. By adjusting the charging speed and providing timely temperature feedback, charging can be performed more efficiently while ensuring safety and comfort.
[0044] Similar to the previous embodiment, in this embodiment, one sound-emitting part 100, one ear-hook part 200, and one control part 300 are each arranged on the left and right sides. Each sound-emitting part is equipped with a first distance sensor 101, and each control part 300 is equipped with a second distance sensor 301. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors 101 and the two second distance sensors 301. The first distance sensor 101 is located at the front end of the sound-emitting part 100, and the second distance sensor 301 is located at the rear end of the control part 300. The first distance sensor 101 is an infrared sensor. A through hole is provided on the inner side of the sound-emitting part 100, and the through hole is covered with a light-transmitting sheet. The first distance sensor 101 is located inside the light-transmitting sheet.
[0045] This application also proposes an embodiment of a safe power supply method for use during the charging process of the smart earphones in the aforementioned embodiment. The smart earphones include: a sound-emitting part 100, an ear hook part 200, a control part 300, a connecting part 400, and a charging port 500. The sound-emitting part 100 and the control part 300 are located at both ends of the ear hook part 200, and the connecting part 400 is connected to the control part 300. A battery and a control circuit board are disposed inside the control part 300. A first distance sensor 101 is disposed on the side of the sound-emitting part 100 closest to the human body. The first distance sensor 101 is electrically connected to the control circuit board. When the charging port 500 is connected to an external power source, the control circuit board acquires the distance signal monitored by the first distance sensor 101 and controls the power supply of the external power source according to the distance signal. When the distance from the human body monitored by the first distance sensor 101 is less than a first threshold, the control circuit board controls the external power source to only supply power to the smart earphones as a whole and not to charge the battery.
[0046] The first threshold is a distance threshold used to determine whether the smart earphones are in a normal wearing state. When the first distance sensor 101 detects that the distance between the sound-emitting part 100 and the human body is less than the first threshold, the control circuit board determines that the sound-emitting part 100 is in contact with the human body and is in a normal wearing state. When the distance is greater than the first threshold, it means that the distance between the sound-emitting part 100 and the human body does not conform to the normal distance in the wearing state, and the control circuit board determines that the sound-emitting part 100 is not in contact with the human body. As long as the distance to the human body detected by the first distance sensor 101 is less than the first threshold when connected to an external power source, the control circuit board controls the external power source not to charge the battery, but only to power the smart earphones for normal operation. This avoids the heat generated by the smart earphones during normal operation and the heat generated by the battery charging, which could lead to a high overall temperature of the smart earphones, causing user discomfort or even potentially triggering battery thermal runaway. Based on this, the specific value of the threshold is adjusted according to the sensitivity of the sensor, and the two are matched.
[0047] In addition to its normal wearing state, the smart earphones can also be temporarily hung around the neck. In this case, the earphones typically do not need to operate continuously and can be in standby mode or turned off. This application can further determine whether the smart earphones are in a neck-hanging state based on the distance between the control unit 300 and the human body, and further adjust the external power supply mode when in this state. Specifically, a second distance sensor 301 is provided on the side of the control unit 300 closest to the human body. The second distance sensor 301 is electrically connected to the control circuit board. When the charging port 500 is connected to an external power source, the control circuit board acquires the distance signal detected by the second distance sensor 301. When the distance detected by the second distance sensor 301 is less than a second threshold, the control circuit board controls the external power source to supply power to the smart earphones as a whole, while also charging the battery.
[0048] The neckband state is not a normal usage state. In this state, the smart earphones are not working or are in standby or other low-power operation, and the heat generation is negligible. However, even in standby mode, normal power supply is required. To prevent power outages when the earphones need power, the control circuit board, when detecting that the smart earphones are in the neckband state, controls the external power supply to charge the battery while also supplying power to the smart earphones as a whole. This avoids affecting the use of the smart earphones under abnormal wearing conditions without increasing discomfort or the risk of battery thermal runaway.
[0049] When not worn normally or around the neck, such as when placed in a storage case or on a table, the smart earphones should no longer be in working mode. In this case, when connected to an external power source, the control circuit board will control the external power source to charge the battery but not to supply power to the smart earphones as a whole. Specifically, the smart earphones are determined to be in an idle or stored state by monitoring the distances from the first distance sensor 101 to the human body and the second distance sensor 301 to the human body. When the distance detected by the first distance sensor 101 to the human body is not less than a first threshold and the distance detected by the second distance sensor 301 to the human body is not less than a second threshold, it is identified as a stored or idle state. In this case, the smart earphones should no longer work, and the control circuit board will control the external power source to charge the battery but not to supply power to the smart earphones as a whole.
[0050] Furthermore, when the distance to the human body detected by the first distance sensor 101 is not less than a first threshold and the distance to the human body detected by the second distance sensor 301 is not less than a second threshold, the control circuit board controls the battery not to supply power to the smart earphone as a whole, regardless of whether an external power source is connected. In the stored or idle state, when the user is not using the smart earphone, to prevent the smart earphone from being used for purposes that may infringe on privacy rights, such as secretly filming or recording, and to prevent the smart earphone from becoming a tool for other software or users to infringe on privacy when not in use, this embodiment achieves the purpose of protecting privacy by cutting off the power supply from the battery to the smart earphone as a whole, thus preventing the smart earphone from working in this situation.
[0051] This application also proposes another implementation of a safe power supply method for powering smart headphones. Specifically, the smart headphones include: a sound-emitting part 100, an ear hook part 200, a control part 300, a connecting part 400, and a charging port 500; the sound-emitting part 100 and the control part 300 are located at both ends of the ear hook part 200, and the connecting part 400 is connected to the control part 300; the control part 300 contains a battery and a control circuit board; a first distance sensor 101 is provided on the side of the sound-emitting part 100 closest to the human body, and a second distance sensor 301 is provided on the side of the control part 300 closest to the human body; the first distance sensor 101 and the second distance sensor 301 are electrically connected to the control circuit board; the charging port 500... When an external power supply is connected to port 500, the control circuit board acquires signals from the first distance sensor 101 and the second distance sensor 301, and controls the power supply of the external power supply according to the distance signals. When the distance to the human body detected by the first distance sensor 101 is less than a first threshold, the control circuit board controls the power of the external power supply to charge the battery to no more than a first preset value. When the distance to the human body detected by the first distance sensor 101 is not less than the first threshold and the distance to the human body detected by the second distance sensor 301 is less than a second threshold, the control circuit board controls the power of the external power supply to charge the battery to no more than a second preset value; the second preset value is greater than the first preset value. When the distance to the human body detected by the first distance sensor 101 is not less than the first threshold and the distance to the human body detected by the second distance sensor 301 is not less than the second threshold, the control circuit board does not limit the power of the external power supply to charge the battery.
[0052] In this embodiment, instead of cutting off power supply based on different wearing states, different charging power is controlled according to the wearing state. Higher charging power results in greater battery heat generation, making it easier for the overall temperature of the smart headphones to rise to an unbearable level for the user. Therefore, during normal use, the charging speed is controlled at a slower range; the first preset value is the upper limit of the charging power at this time. During low-power use in neckband standby mode, the overall heat generation of the smart headphones is small, so the charging speed to the battery is controlled at a higher rate. The heat generated by the headphones during operation combined with the heat generated during charging is not too high. However, since the headphones are still worn around the neck, the charging speed still needs to be appropriately controlled to ensure safety and comfort; the second preset value is the upper limit of the charging power at this time. When the distance between the first distance sensor 101 and the human body is greater than the first threshold and the distance between the second distance sensor 301 and the human body is greater than the second threshold, i.e., when the smart headphones are in an idle or stored state without being worn, the control circuit board no longer actively limits the battery charging power to achieve fast charging under the premise of safety and comfort. The first and second preset values can be set comprehensively based on factors such as the specific structure of the smart earphone, battery capacity, operating power, and heat dissipation speed, so as to meet the design purpose. Different smart earphones have different first and second preset values, and the differences may be significant. It is not practical to give specific numerical examples in this method, so specific numerical examples will not be given in this embodiment.
[0053] This application also proposes another embodiment of a safe power supply method for powering smart headphones. The smart headphones include: a sound-emitting part 100, an ear hook part 200, a control part 300, a connecting part 400, and a charging port 500. The sound-emitting part 100 and the control part 300 are located at opposite ends of the ear hook part 200, and the connecting part 400 is connected to the control part 300. The control part 300 contains a battery and a control circuit board. A first distance sensor 101 is provided on the side of the sound-emitting part 100 closest to the human body, and a second distance sensor 301 is provided on the side of the control part 300 closest to the human body. The control part 300 also includes a temperature sensor. The first distance sensor 101, the second distance sensor 301, and the temperature sensor are all electrically connected to the control circuit board. When an external power source is connected to the charging port 500, the control circuit board acquires signals from the first distance sensor 101, the second distance sensor 301, and the temperature sensor, and controls the power supply of the external power source based on the distance and temperature signals. When the distance to the human body detected by the first distance sensor 101 is less than a first threshold, and the temperature detected by the temperature sensor is not greater than a third threshold, the control circuit board controls the power of the external power source to charge the battery to not exceed a first preset value. When the distance to the human body detected by the first distance sensor 101 is not less than the first threshold, and the distance to the human body detected by the second distance sensor 301 is less than a second threshold, and the temperature... When the temperature detected by the sensor is not greater than the fourth threshold, the control circuit board controls the power of the external power supply to charge the battery to not exceed the second preset value; when the distance to the human body detected by the first distance sensor 101 is less than the first threshold, and the temperature detected by the temperature sensor is greater than the third threshold, the control circuit board controls the external power supply not to charge the battery; when the distance to the human body detected by the first distance sensor 101 is not less than the first threshold, and the distance to the human body detected by the second distance sensor 301 is less than the second threshold, and the temperature detected by the temperature sensor is greater than the fourth threshold, the control circuit board controls the external power supply not to charge the battery.
[0054] This embodiment adds an additional temperature sensor to control the charging power according to different wearing conditions and temperature ranges, thereby improving charging efficiency while ensuring safety and comfort, and achieving a balance between safety, comfort and efficient charging.
[0055] If the distance detected by the first distance sensor 101 is less than a first threshold, indicating normal wear and use, and the temperature detected by the temperature sensor is not greater than a third threshold, the control circuit board controls the external power supply to charge the battery, but the charging power cannot exceed a first preset value. The third threshold is a temperature range that ensures human comfort. Charging and power supply can only occur simultaneously within this range, but the charging power cannot exceed the first preset value. The first preset value is the charging power for safe, slow charging, where heat generation is minimal, ensuring user comfort and safety. If the temperature detected by the temperature sensor is greater than the third threshold, the control circuit board controls the external power supply to stop charging the battery to ensure user comfort and safety.
[0056] When the distance to the human body detected by the first distance sensor 101 is not less than a first threshold and the distance to the human body detected by the second distance sensor 301 is less than a second threshold, indicating a neckband-style wearing state, the smart earphones do not need to operate normally; they only need to be in low-power standby or turned off. If the temperature detected by the temperature sensor is not greater than a fourth threshold, the control circuit board controls the power of the external power supply to charge the battery to not exceed a second preset value. The fourth threshold is the temperature range that does not affect user comfort and safety at this time, and the second preset value is the charging speed that ensures user comfort and safety at this time. Due to different wearing states and different parts of the body they fit, the second preset value and the first preset value are relatively independent. If the temperature detected by the temperature sensor is greater than the fourth threshold, the control circuit board controls the external power supply not to charge the battery to ensure user comfort and safety.
[0057] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. A smart earphone, characterized in that, include: The sound-emitting part, ear hooks, control unit, connection part, and charging port; The sound-generating part and the control part are located at both ends of the ear hook part, and the connecting part is connected to the control part; the control part is provided with a battery and a control circuit board; A first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body; the first distance sensor and the second distance sensor are electrically connected to the control circuit board; When worn, the smart earphone has a first wearing state and a second wearing state. In the first wearing state, the ear hook is held on the ear, and the distance from the first distance sensor to the human body is less than the distance from the second distance sensor to the human body. In the second wearing state, the connecting part is held on the back of the neck, and the distance from the first distance sensor to the human body is greater than the distance from the second distance sensor to the human body. The control circuit board is used to determine the wearing status based on the first distance sensor and the second distance sensor; When the smart earphone is connected to an external power source and is in a first wearing state, the control circuit board is used to prevent the external power source from charging the battery; when the smart earphone is connected to an external power source and is in a second wearing state, the control circuit board is used to control the external power source to charge the battery.
2. The smart earphone as described in claim 1, characterized in that, The charging port is also equipped with a status indicator light, which is used to prompt when the battery power is low or to indicate different power supply states.
3. The smart earphone as described in claim 1, characterized in that, The sound-emitting part, the ear hook part, and the control part are each arranged on the left and right sides. Each sound-emitting part is equipped with a first distance sensor, and each control part is equipped with a second distance sensor. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors and the two second distance sensors.
4. The smart earphone as described in claim 1, characterized in that, The first distance sensor is located at the front end of the sound-emitting part, and the second distance sensor is located at the rear end of the control part.
5. The smart earphone as described in claim 1, characterized in that, The first distance sensor is set as an infrared sensor, and a through hole is provided on the inner side of the sound-emitting part. The through hole is covered with a light-transmitting sheet, and the first distance sensor is located on the inner side of the light-transmitting sheet.
6. The smart earphone as described in claim 1, characterized in that, The control unit is also equipped with a temperature sensor. When the smart earphone is connected to an external power source and is in the second wearing state, the control circuit board is used to control the charging speed of the external power source to the battery based on the temperature signal monitored by the temperature sensor.
7. A smart earphone, characterized in that, include: The sound-emitting part, ear hooks, control unit, connection part, and charging port; The sound-generating part and the control part are located at both ends of the ear hook part, and the connecting part is connected to the control part; the control part is provided with a battery and a control circuit board; A first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body; the first distance sensor and the second distance sensor are electrically connected to the control circuit board; When worn, the smart earphone has a first wearing state and a second wearing state. In the first wearing state, the ear hook is held on the ear, and the distance from the first distance sensor to the human body is less than the distance from the second distance sensor to the human body. In the second wearing state, the connecting part is held on the back of the neck, and the distance from the first distance sensor to the human body is greater than the distance from the second distance sensor to the human body. The control circuit board is used to determine the wearing status based on the first distance sensor and the second distance sensor, and to control the charging speed of the battery based on the wearing status when connected to an external power source.
8. The smart earphone as described in claim 7, characterized in that, The sound-emitting part, the ear hook part, and the control part are each arranged on the left and right sides. Each sound-emitting part is equipped with a first distance sensor, and each control part is equipped with a second distance sensor. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors and the two second distance sensors.
9. The smart earphone as described in claim 7, characterized in that, The first distance sensor is located at the front end of the sound-emitting part, and the second distance sensor is located at the rear end of the control part.
10. The smart earphone as described in claim 7, characterized in that, The first distance sensor is set as an infrared sensor, and a through hole is provided on the inner side of the sound-emitting part. The through hole is covered with a light-transmitting sheet, and the first distance sensor is located on the inner side of the light-transmitting sheet.
11. A smart earphone, characterized in that, include: The sound-emitting part, ear hooks, control unit, connection part, and charging port; The sound-generating part and the control part are located at both ends of the ear hook part, and the connecting part is connected to the control part; the control part is provided with a battery and a control circuit board; A first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body; the first distance sensor and the second distance sensor are electrically connected to the control circuit board; When worn, the smart earphone has a first wearing state and a second wearing state. In the first wearing state, the ear hook is held on the ear, and the distance from the first distance sensor to the human body is less than the distance from the second distance sensor to the human body. In the second wearing state, the connecting part is held on the back of the neck, and the distance from the first distance sensor to the human body is greater than the distance from the second distance sensor to the human body. The control unit is also equipped with a temperature sensor. The control circuit board is used to determine the wearing status based on the first distance sensor and the second distance sensor, and when connected to an external power source, it is used to control the charging speed of the battery based on the wearing status and the temperature signal monitored by the temperature sensor.
12. The smart earphone as described in claim 11, characterized in that, The sound-emitting part, the ear hook part, and the control part are each arranged on the left and right sides. Each sound-emitting part is equipped with a first distance sensor, and each control part is equipped with a second distance sensor. The control circuit board is used to determine the wearing status of the smart earphone based on the monitoring signals of the two first distance sensors and the two second distance sensors.
13. The smart earphone as described in claim 11, characterized in that, The first distance sensor is located at the front end of the sound-emitting part, and the second distance sensor is located at the rear end of the control part.
14. The smart earphone as described in claim 11, characterized in that, The first distance sensor is set as an infrared sensor, and a through hole is provided on the inner side of the sound-emitting part. The through hole is covered with a light-transmitting sheet, and the first distance sensor is located on the inner side of the light-transmitting sheet.
15. A safe power supply method for powering a smart headset, the smart headset comprising: The device includes a sound-emitting part, an ear hook, a control part, a connecting part, and a charging port; the sound-emitting part and the control part are located at both ends of the ear hook, and the connecting part is connected to the control part; the control part contains a battery and a control circuit board; a first distance sensor is provided on the side of the sound-emitting part closest to the human body, and the first distance sensor is electrically connected to the control circuit board; The feature is that when the charging port is connected to an external power source, the control circuit board acquires the distance signal monitored by the first distance sensor and controls the power supply of the external power source according to the distance signal; When the distance to the human body detected by the first distance sensor is less than a first threshold, the control circuit board controls the external power supply to only power the smart earphone as a whole and not to charge the battery.
16. The safe power supply method as described in claim 15, characterized in that, A second distance sensor is provided on the side of the control unit closest to the human body; the second distance sensor is electrically connected to the control circuit board, and when the charging port is connected to an external power source, the control circuit board acquires the distance signal monitored by the second distance sensor; When the distance to the human body detected by the second distance sensor is less than the second threshold, the control circuit board controls the external power supply to provide power to the smart earphone as a whole, and also charges the battery.
17. The safe power supply method as described in claim 15, characterized in that, When the distance to the human body detected by the first distance sensor is not less than a first threshold and the distance to the human body detected by the second distance sensor is not less than a second threshold, the control circuit board controls the external power supply to charge the battery but not to supply power to the smart earphone as a whole.
18. The safe power supply method as described in claim 15 or 17, characterized in that, When the distance to the human body detected by the first distance sensor is not less than a first threshold and the distance to the human body detected by the second distance sensor is not less than a second threshold, the control circuit board controls the battery not to supply power to the smart earphone as a whole.
19. A safe power supply method for powering a smart headset, the smart headset comprising: The device comprises a sound-emitting part, an ear hook, a control part, a connecting part, and a charging port; the sound-emitting part and the control part are located at both ends of the ear hook, and the connecting part is connected to the control part; the control part contains a battery and a control circuit board; a first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body; the first distance sensor and the second distance sensor are electrically connected to the control circuit board; The feature is that when the charging port is connected to an external power source, the control circuit board acquires the signals from the first distance sensor and the second distance sensor, and controls the power supply of the external power source according to the distance signal; When the distance to the human body detected by the first distance sensor is less than a first threshold, the control circuit board controls the power of the external power supply to charge the battery to be no greater than a first preset value. When the distance to the human body detected by the first distance sensor is not less than a first threshold and the distance to the human body detected by the second distance sensor is less than a second threshold, the control circuit board controls the power of the external power supply to charge the battery to not exceed a second preset value. The second preset value is greater than the first preset value.
20. The safe power supply method as described in claim 19, characterized in that, When the distance to the human body detected by the first distance sensor is not less than a first threshold and the distance to the human body detected by the second distance sensor is not less than a second threshold, the control circuit board does not limit the power of the external power supply to charge the battery.
21. A safe power supply method for powering a smart headset, the smart headset comprising: The device comprises a sound-emitting part, an ear hook, a control part, a connecting part, and a charging port; the sound-emitting part and the control part are located at both ends of the ear hook, and the connecting part is connected to the control part; the control part contains a battery and a control circuit board; a first distance sensor is provided on the side of the sound-emitting part closest to the human body, and a second distance sensor is provided on the side of the control part closest to the human body; the control part also contains a temperature sensor; the first distance sensor, the second distance sensor, and the temperature sensor are all electrically connected to the control circuit board; The feature is that when the charging port is connected to an external power source, the control circuit board acquires signals from the first distance sensor, the second distance sensor, and the temperature sensor, and controls the power supply of the external power source based on the distance signal and the temperature signal; When the distance to the human body detected by the first distance sensor is less than a first threshold, and the temperature detected by the temperature sensor is not greater than a third threshold, the control circuit board controls the power of the external power supply to charge the battery to not exceed a first preset value.
22. The safe power supply method as described in claim 21, characterized in that, When the distance to the human body detected by the first distance sensor is less than a first threshold, and the temperature detected by the temperature sensor is greater than a third threshold, the control circuit board controls the external power supply not to charge the battery.
23. The safe power supply method as described in claim 21, characterized in that, When the distance to the human body detected by the first distance sensor is not less than a first threshold, the distance to the human body detected by the second distance sensor is less than a second threshold, and the temperature detected by the temperature sensor is not greater than a fourth threshold, the control circuit board controls the power of the external power supply to charge the battery to not exceed a second preset value.
24. The safe power supply method as described in claim 21, characterized in that, When the distance to the human body detected by the first distance sensor is not less than a first threshold, the distance to the human body detected by the second distance sensor is less than a second threshold, and the temperature detected by the temperature sensor is greater than a fourth threshold, the control circuit board controls the external power supply not to charge the battery.