CN109151694B - Electronic system for detecting out-of-ear of earphone - Google Patents
Electronic system for detecting out-of-ear of earphone Download PDFInfo
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- CN109151694B CN109151694B CN201710451525.0A CN201710451525A CN109151694B CN 109151694 B CN109151694 B CN 109151694B CN 201710451525 A CN201710451525 A CN 201710451525A CN 109151694 B CN109151694 B CN 109151694B
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- 230000001133 acceleration Effects 0.000 claims abstract description 108
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- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 23
- 210000005069 ears Anatomy 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000004984 smart glass Substances 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
- Telephone Function (AREA)
Abstract
The application provides an electronic system for detecting that earphone goes out ear, include: the electronic device capable of playing audio and/or video, the processor and the two earphones are a left earphone and a right earphone respectively, an acceleration monitoring module is arranged in the left earphone and/or the right earphone, the processor processes data collected by the acceleration monitoring module and judges whether the relative acceleration between the left earphone and the right earphone changes or not, so that whether the earphone is out of the ear or not is detected.
Description
Technical Field
The present disclosure relates to the field of headphones, and in particular, to an electronic system for detecting an out-of-ear of a headphone.
Background
With the rapid development of technology, digital products such as mobile phones, MP3, VR devices, smart glasses, notebook computers, CD players and the like capable of playing audio and video are appeared, and most electronic devices capable of playing audio and video support to use headphones to listen to audio and/or video content in audio and video files. When a person uses the headset, one or two of the headset is often removed from the ear, possibly by listening to the speaker of the other person, or by listening to the headset.
For some security reasons, some special electronic devices do not want the headset to be removed from the ear by the user while the audio and/or video files are being played. Possible reasons such as that the audio and/or video files are encrypted, only the current user will be allowed to listen. For such devices, a detection method is needed to detect whether the earphone is removed from the ear, in order to stop playing the audio/video or in combination with other security measures, and such detection is not easily broken.
One existing detection method in the prior art is to use a light sensor for detection. This approach appears to be viable because the ear is dark and the external environment is bright. However, this method is easily spoofed or broken, for example by covering the light sensor with glue, so that the light sensor always detects darkness.
Another prior art detection method is to use biometric sensors such as temperature, resistance or heartbeat sensors. However, such sensors suffer from the problem of being easily broken, since the biological characteristics in the ear and other parts of the human body are not very different.
Disclosure of Invention
In order to solve the technical problem, the application provides an electronic system for detecting whether the earphone goes out of the ear, and whether this application judges whether the earphone goes out of the ear through detecting whether the relative distance between two earphones changes.
The application provides an electronic system for detecting that earphone goes out ear, include: the electronic device capable of playing audio and/or video, the processor and the two earphones are a left earphone and a right earphone respectively, an acceleration monitoring module is arranged in the left earphone and/or the right earphone, the processor processes data collected by the acceleration monitoring module and judges whether the relative acceleration between the left earphone and the right earphone changes or not, so that whether the earphone is out of the ear or not is detected.
According to one embodiment of the application, the left earphone is internally provided with a first acceleration sensor, the right earphone is internally provided with a second acceleration sensor, the first acceleration sensor and the second acceleration sensor generate acceleration data, the processor acquires the acceleration data and processes the acceleration data to judge whether the relative acceleration between the two earphones changes or not, so as to detect whether one or the two earphones are taken out from the inside of the ears.
The two acceleration sensors are installed in two headphones at substantially the same position and orientation, or the two acceleration sensors are installed in two headphones at positions and orientations symmetrical to each other. The direction of one axis of each acceleration sensor passes through or is opposite to the sound outlet of the earphone, and when the left earphone and the right earphone are placed in the ears, the axes of the two axes pointing to or opposite to the sound outlet of the earphone are basically on the same straight line and are opposite or the same.
When two axes pointing to or facing away from the earphone sound outlet are basically in a straight line and opposite in direction, the processor acquires and stores acceleration data of the axes of the first acceleration sensor and the second acceleration sensor pointing to the earphone sound outlet at fixed interval time T1, a detection algorithm in the processor detects once every fixed interval time T2, the data used for the detection algorithm are the last N stored historical acceleration data of each acceleration sensor, and the data are obtained by using { X } k，i I=l: N-1, k=0or1 } represents the last N pieces of history data of the kth acceleration sensor, and the motion difference of the two acceleration sensors is calculated as follows:
the detection algorithm then compares the Diff value to a pre-set threshold Thr to determine if the headset is removed,
if Diff > Thr
Earphone taken out = true;
otherwise
The earphone is taken out = false;
and (5) ending the judgment.
When the axes of the two sound outlets pointing or facing away from the earphone are substantially in a straight line and have the same direction, the processing is similar to the case of the opposite direction, but the plus sign is changed to the minus sign in the calculation formula of the movement difference, as follows:
further, if "earphone is taken out" is true, it indicates that one or more earphones are taken out, and the electronic device performs subsequent processing according to the detection result.
Further, the subsequent processing is to stop audio and/or video playback, and/or sound an alarm, and/or lock the electronic system from any operation.
Further, the electronic device is, for example, a mobile phone, an MP3, a VR device, a smart glasses, a notebook computer, a CD, etc.
Further, the first acceleration sensor and the second acceleration sensor perform data transmission with the processor in a wired or wireless mode.
Optionally, the first acceleration sensor performs data transmission with the processor through a data line, and the second acceleration sensor performs data transmission with the processor through a data line.
Optionally, the first acceleration sensor and the second acceleration sensor are transmitted in a wireless manner, for example, a wireless transceiver is used for transmission through bluetooth or a local area network.
Optionally, the first acceleration sensor and the second acceleration sensor are automatically started when the electronic device is started to play the audio and/or video file, or the acceleration sensors are started when the temperature sensors arranged in the left earphone and the right earphone detect that both earphones are worn on ears.
Further, the first and second acceleration sensors are 1-axis, 2-axis or 3-axis acceleration sensors.
Optionally, the first and second acceleration sensors are triaxial acceleration sensors, each acceleration sensor has X, Y, Z three axes, and a direction of one axis passes through the sound outlet of the earphone.
Further, the processor is disposed in the electronic device.
Further, the processor is disposed in the left earphone or the right earphone.
Further, the processor is disposed on the electronic device and other devices external to the headset.
According to the method, the principle that the relative acceleration of the two earphones is basically unchanged in the using process of the earphones is utilized, and whether the earphones are out of the ears or not is effectively and sensitively judged by detecting the change of the relative acceleration between the two earphones. Furthermore, the acceleration sensor is utilized to develop a novel earphone ear-out detection system, and the detection method of the system is not easy to crack, so that the requirements of certain special safety aspects can be met.
Drawings
FIG. 1 is a perspective view of an electronic system for detecting the presence of an ear of a headset according to one embodiment of the invention;
fig. 2 is a schematic view of the electronic system for detecting the out-of-ear of the earphone shown in fig. 1 in use.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully, and it is apparent that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1 and 2, fig. 1 is a perspective view illustrating an electronic system for detecting an ear of a headset according to an embodiment of the present invention, and fig. 2 is a schematic view illustrating a use state of the electronic system for detecting an ear of a headset shown in fig. 1.
Referring to fig. 1, an electronic system for detecting the ear-out of an earphone includes an electronic device 1 capable of playing audio and/or video, such as a mobile phone, an MP3, a VR device, a smart glasses, a notebook computer, a CD, etc., where the electronic device 1 includes a processor 2, and two earphones, namely a left earphone 10 and a right earphone 11, respectively, where an acceleration sensor 20 is built in the left earphone 10, and an acceleration sensor 21 is built in the right earphone 11, where the acceleration sensor 20 is in data transmission with the processor 2 through a data line 30, and where the acceleration sensor 21 is in data transmission with the processor 2 through a data line 31.
The following describes the principle of detecting the out-of-ear of the earphone by implementing this embodiment with reference to fig. 1 and 2.
After the left and right earphones 10, 11 are respectively worn on the respective ears, the acceleration sensors 20, 21 are automatically or manually activated to generate acceleration data. The acceleration sensor may be automatically activated by activating the electronic device 1 to play audio and/or video files, or may be automatically activated by detecting that both headphones are worn on the ears by a detection element such as a temperature sensor provided in the headphones. The processor 2 acquires and processes these acceleration data and determines whether the relative acceleration between the two headphones has changed, thereby detecting whether one or both headphones have been removed from the ear.
The detection method of the present embodiment utilizes the motion consistency of the acceleration sensor. After the left and right earphones are placed in the ears, if not moved by an external force, the relative positions of the two sensors are fixed, so that the direction difference of the movement is also a fixed value. Even if the user shakes the head in any direction, the difference in movement direction of the sensor does not change as long as the earphone is not moved by an external force. In this state, the data generated by the acceleration sensor will also have some fixed correlation, which correlates to the difference in the direction of movement of the two sensors. This fixed association represents the consistency of the motion of the acceleration sensor, which is used to detect whether the earphone is removed.
In a specific embodiment, the two acceleration sensors are mounted in the following manner: are mounted in two headphones in substantially the same position and orientation, with one axis of each acceleration sensor passing through the sound outlet of the headphones in a direction such that when placed in the ear, the two axes of the two axes pointing toward the sound outlet of the headphones are substantially in a straight line and are in opposite directions.
In the embodiments of fig. 1 and 2, three-axis acceleration sensors are used, each having three axes X, Y, Z, and the three-axis acceleration sensors can generate acceleration data in each coordinate axis direction. After the two acceleration sensors are respectively installed in the two earphones, one corresponding axis of each acceleration sensor, for example, the direction of the X axis, passes through the sound outlet of the earphone, and when the two acceleration sensors are placed in the ears, the two X axes are basically aligned and opposite in direction, as shown in fig. 2.
An algorithm employed by the processor to process the acceleration data is described below.
The processor 2 acquires and stores acceleration data of the acceleration sensors 20, 21 at regular intervals T1. In this embodiment, only the data of the X axis is processed. The detection algorithm detects once every fixed interval time T2, and the data used for the detection algorithm are the latest N stored historical acceleration data of each acceleration sensor.
By { X } k，i I=1: n-1, k=0or 1} represents the last N pieces of history data of the kth acceleration sensor. The motion difference of the two acceleration sensors is calculated as follows:
the plus sign is used here because the data of the X-axis of the two acceleration sensors are substantially opposite.
The algorithm then compares the Diff value to a pre-set threshold Thr to determine if the headset is removed.
If Diff > Thr
Earphone taken out = true;
otherwise
The earphone is taken out = false;
and (5) ending the judgment.
Those skilled in the art will appreciate that when two axes directed toward the earphone sound outlet are substantially aligned and have the same direction, i.e., one axis of one acceleration is directed toward the earphone sound outlet and one axis of the other acceleration is directed away from the earphone sound outlet, the processing is similar to the case where the directions are opposite, but the plus sign is changed to the minus sign in the calculation formula of the movement difference, as follows:
if "earphone taken out" is true, it indicates that one or more earphones are taken out. The electronic device 1 may perform subsequent processing according to the detection result. Such as stopping audio and/or video playback, and/or sounding an alarm, and/or locking the electronic system from any operation.
Those skilled in the art will appreciate that the Y-axis or the Z-axis may be used instead of the X-axis.
In addition, since only the acceleration data of the X axis is used in this embodiment, the 3-axis acceleration sensor may be replaced with a 1-axis or 2-axis acceleration sensor.
It will be appreciated by those skilled in the art that the acceleration sensors 20, 21 may also be in data communication with the processor 2 by wireless means, such as by bluetooth, local area network using wireless transceiver devices.
In the embodiment of fig. 1 and 2, the processor 2 is disposed in an electronic device, and those skilled in the art will readily understand that the processor 2 may be disposed in the main body of the earphone, for example, in the left earphone or the right earphone, and when the electronic system is connected to any electronic device for playing audio and/or video, the ear detection may be implemented, thereby improving the utilization rate. In a further embodiment, the processor 2 is not provided in the electronic device, nor in the headset, but is provided on the external device, and the acceleration data is sent to the external device for processing.
Other processing algorithms may be used for the data processing algorithm, as long as it can determine whether the relative acceleration between two headphones changes (the change is greater than a threshold value).
It should be noted that although in-ear headphones are shown in fig. 1-2, other types of headphones, headsets, earplugs, ear-hanging, rear-hanging, etc. may be used in the electronic system of the present application as well. In this application "out of the ear" means away from the ear.
The detection accuracy and the detection sensitivity of the electronic system for detecting the earphone ear are higher, and the electronic system for detecting the earphone ear is not easy to crack compared with the existing electronic system for detecting the earphone ear. And an acceleration sensor is adopted, so that the processing is convenient, the cost is low, and the requirement of safe playing of audio and/or video can be met.
The foregoing disclosure is only illustrative of the preferred embodiments of the present application and is not intended to limit the scope of the claims herein, as the equivalent of the claims herein shall be construed to fall within the scope of the claims herein.
Claims (9)
1. An electronic system for detecting an out-of-ear of a headset, comprising: the device comprises an electronic device capable of playing audio and/or video, a processor and two earphones, wherein the two earphones are a left earphone and a right earphone respectively, acceleration monitoring modules are arranged in the left earphone and the right earphone, the processor processes data acquired by the acceleration monitoring modules and judges whether the relative acceleration between the left earphone and the right earphone changes or not, so that whether the earphone is out of the ear or not is detected;
the left earphone is internally provided with a first acceleration sensor, the right earphone is internally provided with a second acceleration sensor, the first acceleration sensor and the second acceleration sensor generate acceleration data, the processor acquires the acceleration data and processes the acceleration data, and whether the relative acceleration between the two earphones changes or not is judged, so that whether one or two earphones are taken out from the ears or not is detected;
the two acceleration sensors are installed in two earphones at substantially the same position and direction, or the two acceleration sensors are installed in two earphones at positions and directions symmetrical to each other;
the direction of one axis of each acceleration sensor passes through the sound outlet hole of the earphone, or the direction of one axis of each acceleration sensor is opposite to the sound outlet hole of the earphone, when the left earphone and the right earphone are placed in the ears, the two axes pointing to or opposite to the sound outlet hole of the earphone are basically on the same straight line and have opposite directions;
one axis of one acceleration sensor passes through the sound outlet of the earphone, and the other axis of the other acceleration sensor is opposite to the sound outlet of the earphone, when the left earphone and the right earphone are placed in the ears, the axes of the two sound outlets of the two microphones are basically on the same straight line and have the same direction;
the first acceleration sensor and the second acceleration sensor are 1-axis, 2-axis or 3-axis acceleration sensors;
the processor acquires and stores acceleration data of axes of the first acceleration sensor and the second acceleration sensor pointing to or facing away from the sound outlet of the earphone at fixed interval time T1, a detection algorithm in the processor detects every fixed interval time T2, the data used for the detection algorithm are the latest N stored historical acceleration data of each acceleration sensor, and { X } k，i I=1: n-1, k=0or1 } represents the last N pieces of history data of the kth acceleration sensor, and the motion difference of the two acceleration sensors is calculated according to one of the following two formulas:
the detection algorithm then compares the Diff value to a pre-set threshold Thr to determine if the headset is removed,
if Diff > Thr
Earphone taken out = true;
otherwise
The earphone is taken out = false;
and (5) ending the judgment.
2. The electronic system for detecting the presence of an ear of a headset of claim 1, wherein the electronic device performs a subsequent process based on the detection result when "the headset is removed" is true.
3. The electronic system for detecting an out-of-ear of a headset of claim 2, the subsequent processing being: stopping audio and/or video playback, and/or sounding an alarm, and/or locking the electronic system from any operation.
4. The electronic system for detecting the ear-out of the earphone according to claim 1, wherein the first acceleration sensor and the second acceleration sensor are in data transmission with the processor in a wired or wireless manner.
5. The electronic system for detecting the presence of an ear of a headset of claim 4, wherein the first and second acceleration sensors have an axis that extends through the sound outlet of the headset.
6. The electronic system for detecting an out-of-ear of a headset of claim 1, the processor disposed in the electronic device.
7. The electronic system for detecting an out-of-ear of a headset of claim 1, the processor disposed in either a left headset or a right headset.
8. The electronic system for detecting the presence of an ear of a headset of claim 1, the processor being disposed on the electronic device and other devices external to the headset.
9. The electronic system for detecting an out-of-ear of a headset of claim 1, wherein the electronic device is a cell phone, MP3, VR device, smart glasses, notebook computer, or CD.
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| CN201710451525.0A CN109151694B (en) | 2017-06-15 | 2017-06-15 | Electronic system for detecting out-of-ear of earphone |
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| CN201710451525.0A CN109151694B (en) | 2017-06-15 | 2017-06-15 | Electronic system for detecting out-of-ear of earphone |
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| CN114513722A (en) * | 2022-03-30 | 2022-05-17 | 歌尔股份有限公司 | Wearing detection method and device for earphone, earphone equipment and storage medium |
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