CN112967483A - Bluetooth headset capable of timely reminding user of falling off in use process - Google Patents
Bluetooth headset capable of timely reminding user of falling off in use process Download PDFInfo
- Publication number
- CN112967483A CN112967483A CN202110114571.8A CN202110114571A CN112967483A CN 112967483 A CN112967483 A CN 112967483A CN 202110114571 A CN202110114571 A CN 202110114571A CN 112967483 A CN112967483 A CN 112967483A
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- bluetooth headset
- acceleration sensor
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 25
- 230000001133 acceleration Effects 0.000 claims abstract description 38
- 239000013078 crystal Substances 0.000 claims description 22
- 230000003139 buffering effect Effects 0.000 claims description 17
- 238000013016 damping Methods 0.000 claims description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 3
- 230000008859 change Effects 0.000 abstract description 4
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 description 7
- 239000012634 fragment Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to the technical field of digital electronics, and discloses a Bluetooth headset capable of timely reminding when falling in a using process, which comprises a shell, an earplug and an acceleration sensor, wherein the earplug is arranged on the left side of the shell, a buffer sleeve is coated on the periphery of the outer side of the shell, an element box is arranged in the shell, the acceleration sensor is arranged in the element box, a chip and a buzzer are arranged on the inner side wall of the element box, and the chip is electrically connected with the buzzer. The falling state signal acquisition is carried out through the acceleration sensor, the falling state is accurately judged according to the Newton kinematics second law, and the buzzer is used for giving an alarm; the novel earphone dropping device has the advantages that the complex structure caused by mechanical transmission is simplified, the posture of the earphone in the dropping process is not needed to be considered, the dropping state can be judged only by judging the change of the instantaneous stress size and direction of the acceleration sensor, an alarm can be timely and accurately sent out, and the novel earphone dropping device has good stability and reliability.
Description
Technical Field
The invention relates to the technical field of digital electronics, in particular to a Bluetooth headset which can drop in the using process and can remind people in time.
Background
With the large-scale popularization of digital electronic products, earphones with audio input and output functions become the main accessories of digital electronic products, and the demand is expanding. Among them, the demand for a bluetooth headset having a wireless transmission function is also high. However, although the bluetooth headset is convenient to use and fashionable to wear, most young people can wear the bluetooth headset during sports or walking, the bluetooth headset is easy to fall off due to the fact that the bluetooth headset is plugged into the ear hole through the earplug and is not fixed by the fixing device, and the bluetooth headset is not easy to find when falling off due to the fact that the bluetooth headset is small, property loss of a user is caused, and internal elements of the bluetooth headset are easy to damage due to the generated gravitational potential energy when falling off. The invention patent of Chinese patent publication No. CN112019964A discloses a Bluetooth headset capable of timely reminding when falling off in use, which comprises a shell, wherein buffer pads are uniformly distributed on the outer side of the shell, ejector rods are movably mounted in the buffer pads, the upper ends of the ejector rods are movably mounted in an alarm device, a pressing plate is movably mounted in the alarm device, the lower side of the pressing plate is fixedly mounted at the upper ends of the ejector rods, air bags are arranged on the upper side of the pressing plate, the buffer pads are compressed inwards through the action of gravity to push the ejector rods to move, the ejector rods push the pressing plate, in the process that the pressing plate moves inwards, racks in tooth sockets are driven to move inwards to synchronously rotate with gears meshed with the racks, and an L-shaped connecting rod is driven to move in the process of rotating the gears, so that an electric induction head arranged at the upper end of the L-, therefore, the effect of timely alarming and reminding when the earphone falls to the ground is achieved.
The prior art has the following defects: the structure is too complex, the alarm function is finally realized through the transmission of a plurality of micro mechanical structures, and in the modern life pursuing rapidness and portability, the larger volume brought by the plurality of mechanical structures is not easy to be accepted by the public; in addition, structural components are too complicated, each component needs to be matched with a secret to realize the alarm function, and the structure is easy to loosen or damage in the impact process, so that the alarm function cannot be realized; more importantly, the state of the earphone when falling needs to be considered, the structure can not be triggered and an alarm can be given out when the earphone falls, and the stability and the reliability are poor.
Disclosure of Invention
The invention aims to provide a Bluetooth headset which can drop in the using process and can remind in time, has the advantages of simple structure, small volume and stable and reliable performance, and solves the problems of complicated structure, large volume and unstable performance in the prior art.
The Bluetooth headset capable of timely reminding people of falling in the using process comprises a shell, earplugs and an acceleration sensor, wherein the earplugs are arranged on the left side of the shell, a sponge sleeve is arranged outside the earplugs, and a buffer sleeve is coated on the peripheral edge of the outer side of the shell;
an element box is arranged in the shell, a gap is formed between the element box and the shell, buffer springs are arranged in the gap between the element box and the shell, the number of the buffer springs is four, and the four buffer springs are respectively arranged at four top corners of the element box;
a groove is formed in the position, close to the lower end, inside the element box, an acceleration sensor is arranged in the groove, and a damping spring is arranged between the acceleration sensor and the element box;
the side wall of the inner side of the element box is provided with a chip and a buzzer, the buzzer is arranged above the chip, and the chip is electrically connected with the buzzer.
Further, the top end and the bottom end of the acceleration sensor are both provided with a clamping block, the upper end and the lower end inside the groove are both provided with a clamping groove, and the damping spring is arranged between the clamping block and the clamping groove.
Furthermore, the acceleration sensor comprises a prepressing elastic sheet, a mass block, a piezoelectric crystal piece and a base, wherein the prepressing elastic sheet, the mass block and the piezoelectric crystal piece are sequentially fixed at the upper end of the base from top to bottom.
Further, acceleration sensor upper portion is equipped with the casing, the casing sets up in the top of pre-compaction shell fragment, the bottom and the base lateral wall joint of casing, pre-compaction shell fragment upper end is equipped with fastening bolt, the fastening bolt top is provided with fastening nut, pre-compaction shell fragment, quality piece and piezoelectric crystal piece are fixed in the base upper end through fastening bolt and fastening nut.
Furthermore, a lead is arranged on the side edge of the piezoelectric crystal piece, the lead extends to the outside of the shell, and the acceleration sensor is electrically connected with the chip through the lead.
Further, the inside buffer column that is provided with of buffer sleeve, the buffer column sets up in the inside lateral wall of buffer sleeve.
Further, the buffer column comprises a spherical buffer column and a butterfly buffer column.
Furthermore, two pairwise opposite spherical buffer posts and two pairwise opposite butterfly buffer posts are arranged on two inner side walls of the buffer sleeve respectively, the spherical buffer posts are arranged on the inner side wall close to the outer side of the buffer sleeve, and the butterfly buffer posts are arranged on the inner side wall close to the inner side of the buffer sleeve.
Furthermore, a gap is arranged between the spherical buffer column and the butterfly buffer column.
Further, a control key is arranged on the front side surface of the shell.
Compared with the prior art, the invention has the beneficial effects that:
1. the falling state signal acquisition is carried out through the acceleration sensor, when an object falls, the mass block in the acceleration sensor can obtain acceleration, the earphone bounces again after impact and rises to a certain height, in the two processes, according to a Newton kinematics second law, pictures are generated at the moment of impact when the piezoelectric crystal piece receives the extrusion force of the mass block, the sudden change process can be received and judged through the chip, the falling state is accurately judged, and the buzzer is used for giving an alarm;
2. the motion state is accurately judged by adopting the sensitive element according to a kinematics law, the complex structure brought by mechanical transmission is greatly simplified, the kinetic energy in the falling process is counteracted through the elastic deformation of the buffer column in the buffer sleeve, and the buffer gap is arranged between the internal electric element and the shell, so that the internal structure can be better protected from being influenced by collision under the condition of reducing the overall volume of the earphone;
3. because the direction of the acceleration is vertical downwards all the time, the posture of the earphone in the dropping process does not need to be considered, the dropping state can be judged only by judging the change of the instantaneous stressed size and direction of the acceleration sensor, and the alarm can be timely and accurately sent out, so that the earphone dropping device has good stability and reliability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a bluetooth headset which can drop and remind in time in the using process;
FIG. 2 is an enlarged view of area A of FIG. 1 in accordance with the present invention;
fig. 3 is an enlarged view of the area B of fig. 1 according to the present invention.
In the figure: 1-shell, 2-earplug, 3-buffer sleeve, 4-element box, 5-buzzer, 6-chip, 7-sponge sleeve, 8-control key, 9-shell, 10-fastening bolt, 11-fastening nut, 12-pre-pressing spring sheet, 13-mass block, 14-piezoelectric crystal sheet, 15-base, 16-lead, 17-spherical buffer column, 18-butterfly buffer column, 19-fixture block, 20-clamp groove, 21-damping spring and 22-buffer spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-3, preferred embodiments of the present invention are shown.
The Bluetooth headset capable of timely reminding when falling off in the using process comprises a shell 1, earplugs 2 and an acceleration sensor, wherein the earplugs 2 are arranged on the left side of the shell 1, sponge sleeves 7 are arranged outside the earplugs 2, and the sponge sleeves 7 are used for protecting eardrums of a user from being stimulated by strong audio; in addition, when the earphone accidentally falls, a part of falling impact force can be counteracted, the earplugs 2 are protected from being damaged, and the buffer sleeves 3 are coated on the edges on the periphery of the outer side of the shell 1 and can counteract the impact force generated in the falling process of the earphone;
an element box 4 is arranged in the shell 1, a certain gap exists between the element box 4 and the shell 1, so that the kinetic energy can be prevented from being transmitted into the element box 4 during impact to damage elements in the element box 4, four buffer springs 22 are arranged in the gap between the element box 4 and the shell 1, and the four buffer springs 22 are respectively arranged at four top corners of the element box 4;
a groove is arranged in the element box 4 close to the lower end, an acceleration sensor is arranged in the groove, and a damping spring 21 is arranged between the acceleration sensor and the element box 4;
the chip 6 and the buzzer 5 are arranged on the inner side wall of the element box 4, the buzzer 5 is arranged above the chip 6, the chip 6 is electrically connected with the buzzer 5, and the chip 6 can control the buzzer 5 to give an alarm.
In this embodiment, the top end and the bottom end of the acceleration sensor are both provided with the fixture block 19, the upper end and the lower end inside the groove are both provided with the clamping groove 20, the damping spring 21 is arranged between the fixture block 19 and the clamping groove 20, a part of impact force falling during impact is offset, and the other part of impact force is transmitted into the element box 4 and is transmitted to the acceleration sensor through the damping spring 21, so that the acceleration sensor generates acceleration change.
In this embodiment, acceleration sensor includes pre-compaction shell fragment 12, quality piece 13, piezoelectric crystal piece 14 and base 15, pre-compaction shell fragment 12, quality piece 13 and piezoelectric crystal piece 14 top-down are fixed in the 15 upper ends of base in proper order, specifically pre-compaction shell fragment 12 sets up in quality piece 13 up end, and offset with it, quality piece 13 sets up in piezoelectric crystal piece 14's up end, and offset with it, contact well in order to guarantee the effective conduction of power between each part, acceleration sensor upper portion is equipped with casing 9, casing 9 sets up in the top of pre-compaction shell fragment 12, the bottom and the 15 lateral wall joint of base of casing 9, casing 9 protects each sensitive element of acceleration sensor, do not receive the influence of other inside parts of other earphones, stability and reliability when guaranteeing to use.
In this embodiment, a fastening bolt 10 is disposed at an upper end of the pre-pressed elastic sheet 12, a fastening nut 11 is disposed at a top end of the fastening bolt 10, the pre-pressed elastic sheet 12, the mass block 13 and the piezoelectric crystal piece 14 are fixed at an upper end of the base 15 through the fastening bolt 10 and the fastening nut 11, the pre-pressed elastic sheet 12, the mass block 13 and the piezoelectric crystal piece 14 are tightly fixed on the base 15 by the fastening bolt 10 and the fastening nut 11, and good contact among the parts is ensured to realize effective conduction of force.
In this embodiment, a lead 16 is disposed on a side of the piezoelectric crystal piece 14, the lead 16 extends to the outside of the housing 9, the acceleration sensor is electrically connected to the chip 6 through the lead 16, and a mechanical signal received by the piezoelectric crystal piece 14 is transmitted to the chip 6 through the lead 16, and is determined by the chip 6 to make a next command.
In this embodiment, the inside buffering post that is provided with of cushion collar 3, the buffering post sets up in the inside lateral wall of cushion collar 3, the buffering post includes spherical buffering post 17 and butterfly buffering post 18 two kinds, spherical buffering post 17 and butterfly buffering post 18 two liang of relative respectively set up in the inside both sides wall of cushion collar 3, spherical buffering post 17 sets up in the inside lateral wall that leans on the outside of cushion collar 3, butterfly buffering post 18 sets up in the inside lateral wall that leans on the inboard of cushion collar 3, be provided with the clearance between spherical buffering post 17 and the butterfly buffering post 18, the impact force that the collision produced is absorbed and offset through the deformation of spherical buffering post 17 and butterfly buffering post 18, the deformation energy that the two produced in the twinkling of an eye converts the kinetic energy that the earphone upwards bounced into, make the direction of stress produce instantaneous.
In this embodiment, the front side surface of the housing is provided with a control key 8, and the control key 8 can control the use of the bluetooth headset.
The working principle is as follows: when a user uses the Bluetooth headset, the headset unintentionally falls on the ground in walking or moving process, no matter what posture the headset falls, the acceleration direction of the headset is always vertical downwards, according to the Newton's law, when an acceleration sensor inside the headset moves along with the headset in a free-falling body manner, the mass block 13 generates inertial acting force which can be always decomposed into force vertically acting on the piezoelectric crystal piece 14 and force parallel to the piezoelectric crystal piece 14, the piezoelectric crystal piece 14 generates deformation proportional to the acting force in the vertical direction, due to the piezoelectric effect of the piezoelectric crystal piece 14, electric charge proportional to the deformation of the piezoelectric element is generated, the signal is led out by a lead 16 at the output end and is transmitted to the chip 6 for judgment, when the headset is in contact collision with the ground or other rigid objects, the buffer column in the buffer sleeve 3 outside the shell 1 can be extruded and deformed, potential energy formed in the falling process is converted into deformation energy of the buffer column through impact, and then is converted into initial kinetic energy of the earphone in a bouncing mode, in the process, the magnitude and the direction of acting force acting on the piezoelectric crystal piece 14 are suddenly changed, signals are collected and recognized by the chip 6, the chip 6 outputs electric signals to the buzzer 5, and the buzzer gives out an alarm to achieve the purpose of reminding a user.
In this embodiment, the whole operation process does not involve a complex mechanical structure, and signal transmission between the acceleration sensor and the chip 6 and between the acceleration sensor and the buzzer 5 can be performed by signal feedback through the sensor, so as to realize sequential steps, which are conventional knowledge of the current automatic control, and are not repeated in this embodiment.
The invention is not described in detail, but is well known to those skilled in the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Drop the bluetooth headset that can in time remind in the use, including shell, earplug and acceleration sensor, its characterized in that: the earplugs are arranged on the left side of the shell, sponge sleeves are arranged outside the earplugs, and the edges on the periphery of the outer side of the shell are wrapped with buffer sleeves;
an element box is arranged in the shell, a gap is formed between the element box and the shell, buffer springs are arranged in the gap between the element box and the shell, the number of the buffer springs is four, and the four buffer springs are respectively arranged at four top corners of the element box;
a groove is arranged in the element box close to the lower end, an acceleration sensor is arranged in the groove, and a damping spring is arranged between the acceleration sensor and the element box;
the side wall of the inner side of the element box is provided with a chip and a buzzer, the buzzer is arranged above the chip, and the chip is electrically connected with the buzzer.
2. The bluetooth headset that can drop in time and remind in use according to claim 1, characterized in that: the top end and the bottom end of the acceleration sensor are both provided with clamping blocks, the upper end and the lower end inside the groove are both provided with clamping grooves, and the damping spring is arranged between the clamping blocks and the clamping grooves.
3. The bluetooth headset that can drop in time and remind in use according to claim 2, characterized in that: the acceleration sensor comprises a prepressing elastic sheet, a mass block, a piezoelectric crystal piece and a base, wherein the prepressing elastic sheet, the mass block and the piezoelectric crystal piece are sequentially fixed at the upper end of the base from top to bottom.
4. The Bluetooth headset that can drop and remind in time in the using process of claim 3, wherein: the upper portion of the acceleration sensor is provided with a shell, the shell is arranged above the pre-pressed elastic piece, the bottom end of the shell is clamped with the side wall of the base, a fastening bolt is arranged at the upper end of the pre-pressed elastic piece, a fastening nut is arranged at the top end of the fastening bolt, and the pre-pressed elastic piece, the mass block and the piezoelectric crystal piece are fixed to the upper end of the base through the fastening bolt and the fastening nut.
5. The Bluetooth headset capable of timely reminding when falling down in the using process according to claim 4, characterized in that: the side of the piezoelectric crystal piece is provided with a lead wire, the lead wire extends to the outside of the shell, and the acceleration sensor is electrically connected with the chip through the lead wire.
6. The Bluetooth headset capable of timely reminding when falling off in the using process according to claim 5, characterized in that: the buffer sleeve is characterized in that a buffer column is arranged inside the buffer sleeve and arranged on the side wall inside the buffer sleeve.
7. The Bluetooth headset capable of timely reminding when falling down in the using process according to claim 6, characterized in that: the buffer column comprises a spherical buffer column and a butterfly buffer column.
8. The bluetooth headset that can drop in time and remind in use according to claim 7, characterized in that: spherical buffering post and butterfly buffering post pairwise are relative sets up respectively in the inside both sides wall of cushion collar, spherical buffering post sets up the inside lateral wall that leans on the outside in the cushion collar, the butterfly buffering post sets up the inside lateral wall that leans on the inboard in the cushion collar.
9. The bluetooth headset that can drop in time and remind in use according to claim 8, characterized in that: and a gap is arranged between the spherical buffer column and the butterfly buffer column.
10. The bluetooth headset that can drop in time and remind in use according to claim 9, characterized in that: the front side surface of the shell is provided with a control key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110114571.8A CN112967483A (en) | 2021-01-26 | 2021-01-26 | Bluetooth headset capable of timely reminding user of falling off in use process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110114571.8A CN112967483A (en) | 2021-01-26 | 2021-01-26 | Bluetooth headset capable of timely reminding user of falling off in use process |
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| Publication Number | Publication Date |
|---|---|
| CN112967483A true CN112967483A (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110114571.8A Pending CN112967483A (en) | 2021-01-26 | 2021-01-26 | Bluetooth headset capable of timely reminding user of falling off in use process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593203A (en) * | 2021-07-21 | 2021-11-02 | 惠州市欧凡实业有限公司 | Novel touch wireless Bluetooth earphone |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000165977A (en) * | 1998-11-26 | 2000-06-16 | Hiroshi Matsuzawa | Earphone |
| CN203561647U (en) * | 2013-11-27 | 2014-04-23 | 黑龙江科技大学 | Piezoelectric accelerometer |
| CN109756813A (en) * | 2019-03-19 | 2019-05-14 | 南昌科悦企业管理咨询有限公司 | A kind of bluetooth headset convenient for wearing Anti-fall |
| CN112019964A (en) * | 2020-08-31 | 2020-12-01 | 广州尚开科技有限公司 | Bluetooth headset that can in time remind drops in use |
| CN212278422U (en) * | 2020-07-29 | 2021-01-01 | 安徽信息工程学院 | Anti-falling microphone |
| CN112261530A (en) * | 2020-09-09 | 2021-01-22 | 深圳市奋达科技股份有限公司 | TWS earphone anti-lost method, TWS earphone and computer readable storage medium |
-
2021
- 2021-01-26 CN CN202110114571.8A patent/CN112967483A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000165977A (en) * | 1998-11-26 | 2000-06-16 | Hiroshi Matsuzawa | Earphone |
| CN203561647U (en) * | 2013-11-27 | 2014-04-23 | 黑龙江科技大学 | Piezoelectric accelerometer |
| CN109756813A (en) * | 2019-03-19 | 2019-05-14 | 南昌科悦企业管理咨询有限公司 | A kind of bluetooth headset convenient for wearing Anti-fall |
| CN212278422U (en) * | 2020-07-29 | 2021-01-01 | 安徽信息工程学院 | Anti-falling microphone |
| CN112019964A (en) * | 2020-08-31 | 2020-12-01 | 广州尚开科技有限公司 | Bluetooth headset that can in time remind drops in use |
| CN112261530A (en) * | 2020-09-09 | 2021-01-22 | 深圳市奋达科技股份有限公司 | TWS earphone anti-lost method, TWS earphone and computer readable storage medium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593203A (en) * | 2021-07-21 | 2021-11-02 | 惠州市欧凡实业有限公司 | Novel touch wireless Bluetooth earphone |
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Application publication date: 20210615 |
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