CN108828635A - A kind of device quickly positioned for small article - Google Patents
A kind of device quickly positioned for small article Download PDFInfo
- Publication number
- CN108828635A CN108828635A CN201810628669.3A CN201810628669A CN108828635A CN 108828635 A CN108828635 A CN 108828635A CN 201810628669 A CN201810628669 A CN 201810628669A CN 108828635 A CN108828635 A CN 108828635A
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- China
- Prior art keywords
- feet
- integrated circuit
- resistance
- connects
- microphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/33—Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Electronic Switches (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The invention discloses a kind of devices quickly positioned for small article, including shell, low-frequency oscillatory network, detection amplifying circuit, microphone M1, loudspeaker SW and Light-emitting diode LED 1, microphone M1, loudspeaker SW and Light-emitting diode LED 1 are embedded in surface of shell, and low-frequency oscillatory network and detection amplifying circuit are in shell；User issues whistle after forgetting small article, microphone M1 of the invention at this time successively passes through operational amplifier IC1, whistle switch chip IC2 and NOR gate circuit IC3 after acquiring the audio, loudspeaker SW and Light-emitting diode LED 1 is finally set to work, issue acousto-optic hint, and it continues for some time, user can determine in time the location of small article by acousto-optic hint at this time, eventually find small article；Therefore structure of the invention is small and exquisite, easy to use, it is only necessary to which user issues whistle, can make present invention feedback acousto-optic hint, so that user can determine the location of small article in time.
Description
Technical field
The present invention relates to a kind of positioning device, specifically a kind of device quickly positioned for small article.
Background technique
There are many small objects, such as various small-sized tools at home due to existing, sometimes one of people in family
After being taken out use, it can forget these objects being placed back into situ, then it may arbitrarily be placed on by other people
Elsewhere, such time it is longer after, if it is desired to when reusing, since the object is not in initial position, and due to
These object volume very littles are not easily thing to find it.Therefore one kind is needed to use this compared with small articles
In journey after forgetting its position, user can be to the device that it is quickly positioned.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of device quickly positioned for small article,
Compact structure, it is easy to use, can be after forgetting small article present position, it, can be according to the sound of feedback by issuing whistle
Light prompt determines the location of small article in time.
To achieve the goals above, the technical solution adopted by the present invention is that：A kind of dress quickly positioned for small article
It sets, including shell, low-frequency oscillatory network, detection amplifying circuit, microphone M1, loudspeaker SW and Light-emitting diode LED 1, microphone M1,
Loudspeaker SW and Light-emitting diode LED 1 are embedded in surface of shell, and low-frequency oscillatory network and detection amplifying circuit are in shell；
The detection amplifying circuit includes resistance R1, R2, R3, R4, R5, R6, R7, R8, capacitor C1, C3, C4, electrolytic capacitor
C2, Integrated circuit IC 1, IC2, power supply E；Wherein resistance R1 and microphone M1 series connection is followed by between the anode and ground of power supply E；Resistance
R2 connects between the anode of power supply E and 3 feet of Integrated circuit IC 1；Resistance R3 connects between 3 feet and ground of Integrated circuit IC 1；Electricity
After hindering R4 and capacitor C1 series connection, the common point of one terminating resistor R1 and microphone M1,2 feet of another termination Integrated circuit IC 1；Electricity
Resistance R5 connects between 1 foot and 2 feet of Integrated circuit IC 1；Resistance R6 and capacitor C3 series connection is followed by 1 foot of Integrated circuit IC 1 and 6
Between foot；Resistance R7 connects between 6 feet and 7 feet of Integrated circuit IC 1；Resistance R8 connect 2 feet of Integrated circuit IC 2 and 3 feet it
Between；The anode of electrolytic capacitor C2 connects 3 feet of Integrated circuit IC 1, and cathode connects 4 feet of Integrated circuit IC 1；Capacitor C4 connects in integrated electricity
Between 7 feet of road IC1 and 1 foot of Integrated circuit IC 2；4 feet of Integrated circuit IC 1 are grounded, and 5 feet and 3 feet are connected, and 8 feet meet power supply E
Anode；6 feet of Integrated circuit IC 2 connect the anode of power supply E, 7 feet ground connection, and 8 feet connect 1 foot of Integrated circuit IC 3；
The low-frequency oscillatory network includes resistance R9, R10, R11, electrolytic capacitor C5, capacitor C6 and Integrated circuit IC 3；Its
Middle resistance R9 connects between 1 foot and 2 feet of Integrated circuit IC 3；Resistance R10 and resistance R11 series connection is followed by Integrated circuit IC 3
Between 4 feet and 6 feet of Integrated circuit IC 3；The anode of electrolytic capacitor C5 connects 1 foot of Integrated circuit IC 3, cathode ground connection；Capacitor C6
The common point of one terminating resistor R10 and R11,10 feet of another termination Integrated circuit IC 3；3 feet, 5 feet and 9 of Integrated circuit IC 3
Foot is connected, and 4 feet and 8 feet are connected, and 7 feet, 12 feet and 13 feet ground connection, 14 feet connect the anode of power supply E；The cathode of power supply E is grounded, and is shone
The anode of diode (LED) 1 connects 10 feet of Integrated circuit IC 3, and cathode connects 8 feet of Integrated circuit IC 3；Loudspeaker SW is connected in parallel on luminous
The both ends of diode (LED) 1.
Further, the model TLC27L2 of the Integrated circuit IC 1, the model UM3673 of Integrated circuit IC 2, microphone
M1 is Electret condenser microphone.
Further, the power supply E is button cell.
Further, the model CD4070 of the Integrated circuit IC 3.
Compared with prior art, the present invention using low-frequency oscillatory network, detection amplifying circuit, microphone M1, loudspeaker SW and
Light-emitting diode LED 1 combines mode, and user issues whistle after forgetting small article, and microphone M1 acquires the sound at this time
Successively pass through operational amplifier IC1, whistle switch chip IC2 and NOR gate circuit IC3 after frequency, finally makes loudspeaker SW and hair
Optical diode LED1 work, issues acousto-optic hint, and continue for some time, user can be determined in time by acousto-optic hint at this time
The location of small article eventually finds small article；Therefore structure of the invention is small and exquisite, easy to use, it is only necessary to user's hair
Whistle out can make present invention feedback acousto-optic hint, so that user can determine the location of small article in time.
Detailed description of the invention
Fig. 1 is surface structure schematic diagram of the invention；
Fig. 2 is circuit diagram of the invention.
Specific embodiment
The invention will be further described below.
As depicted in figs. 1 and 2, the present invention includes shell, low-frequency oscillatory network, detection amplifying circuit, microphone M1, loudspeaker
SW and Light-emitting diode LED 1, microphone M1, loudspeaker SW and Light-emitting diode LED 1 are embedded in surface of shell, low-frequency oscillatory network
It is in shell with detection amplifying circuit；
The detection amplifying circuit includes resistance R1, R2, R3, R4, R5, R6, R7, R8, capacitor C1, C3, C4, electrolytic capacitor
C2, Integrated circuit IC 1, IC2, power supply E；Wherein resistance R1 and microphone M1 series connection is followed by between the anode and ground of power supply E；Resistance
R2 connects between the anode of power supply E and 3 feet of Integrated circuit IC 1；Resistance R3 connects between 3 feet and ground of Integrated circuit IC 1；Electricity
After hindering R4 and capacitor C1 series connection, the common point of one terminating resistor R1 and microphone M1,2 feet of another termination Integrated circuit IC 1；Electricity
Resistance R5 connects between 1 foot and 2 feet of Integrated circuit IC 1；Resistance R6 and capacitor C3 series connection is followed by 1 foot of Integrated circuit IC 1 and 6
Between foot；Resistance R7 connects between 6 feet and 7 feet of Integrated circuit IC 1；Resistance R8 connect 2 feet of Integrated circuit IC 2 and 3 feet it
Between；The anode of electrolytic capacitor C2 connects 3 feet of Integrated circuit IC 1, and cathode connects 4 feet of Integrated circuit IC 1；Capacitor C4 connects in integrated electricity
Between 7 feet of road IC1 and 1 foot of Integrated circuit IC 2；4 feet of Integrated circuit IC 1 are grounded, and 5 feet and 3 feet are connected, and 8 feet meet power supply E
Anode；6 feet of Integrated circuit IC 2 connect the anode of power supply E, 7 feet ground connection, and 8 feet connect 1 foot of Integrated circuit IC 3；
The low-frequency oscillatory network includes resistance R9, R10, R11, electrolytic capacitor C5, capacitor C6 and Integrated circuit IC 3；Its
Middle resistance R9 connects between 1 foot and 2 feet of Integrated circuit IC 3；Resistance R10 and resistance R11 series connection is followed by Integrated circuit IC 3
Between 4 feet and 6 feet of Integrated circuit IC 3；The anode of electrolytic capacitor C5 connects 1 foot of Integrated circuit IC 3, cathode ground connection；Capacitor C6
The common point of one terminating resistor R10 and R11,10 feet of another termination Integrated circuit IC 3；3 feet, 5 feet and 9 of Integrated circuit IC 3
Foot is connected, and 4 feet and 8 feet are connected, and 7 feet, 12 feet and 13 feet ground connection, 14 feet connect the anode of power supply E；The cathode of power supply E is grounded, and is shone
The anode of diode (LED) 1 connects 10 feet of Integrated circuit IC 3, and cathode connects 8 feet of Integrated circuit IC 3；Loudspeaker SW is connected in parallel on luminous
The both ends of diode (LED) 1.
Further, the model TLC27L2 of the Integrated circuit IC 1, the model UM3673 of Integrated circuit IC 2, microphone
M1 is Electret condenser microphone.Integrated circuit IC 2 uses whistle switch chip UM3763, whenever microphone M1 detects whistle sound
Afterwards, the output state of the switch can be overturn once, i.e., a sound whistle is to close the switch, and another sound whistle is that switch disconnects, so
It moves in circles；Microphone M1 uses Electret condenser microphone rather than conventional piezoelectric formula microphone, is because the former is more small in size than the latter
Very much, it is very suitable on small articles.
Further, the power supply E is button cell.
Further, the model CD4070 of the Integrated circuit IC 3.
Work process of the invention is as follows：First the present invention is fixed on small article (such as before using small article
Pass through double-sided adhesive), then begin to use small article, do not forget after completing use, the present invention is taken from small article
Under, and small article is placed into its initial position, if after forgetting small article and when can not find, user passes through sending
Whistle is found, due to lose small articles hiding position be it is diversified, some in wardrobe, some sofa sit
Under pad, the channel for receiving whistle may be subjected to obstruction, it is therefore desirable in the input terminal (i.e. 1 of whistle switch chip IC2
Foot) before increase amplifying circuit faint whistle is amplified, detection amplifying circuit in, resistance R1 as microphone M1 amplification
Load, the current signal that will test is converted into voltage signal, send through capacitor C1 to 2 feet of operation amplifier chip IC 1 and 3 feet, 1
It is sent again after foot output to 5 feet of operation amplifier chip IC 1 and 6 feet and carries out two-stage amplification, finally send voltage amplification to 2V or so
To the input terminal of whistle switch chip IC2.Here operational amplifier uses TLC27L2 without serial using traditional 741,
The considerations of being to reduce electric current, because each amplifier in TLC27L2 only consumes 10uA electric current.Adjust whistle switch core
2 feet of piece IC2 and the outer connecting resistance R8 of 3 feet keep the receiving sensitivity of whistle switch chip IC2 maximum, every reception at this time
To a whistle, the state of output circuit will be overturn once, i.e. 1 foot of whistle switch chip IC2 can receive primary height
Level, so that 8 feet of whistle switch chip IC2 be made to export high level, 1 foot of NOR gate circuit IC3 receives high level, different
3 feet of OR circuit IC3 export high level, and NOR gate circuit IC3 can be made to become low-frequency oscillator at this time, work as NOR gate circuit
When 5 feet and 9 feet of IC3 are high level, the NOR gate circuit of IC3 is phase inverter, and 10 feet can export rugged voltage, this
When will push loudspeaker SW and issue too sound, while Light-emitting diode LED 1 can flash, and work as the 5 of NOR gate circuit IC3
When foot and 9 feet are low level, the NOR gate circuit of IC3 is with phase device, and oscillator does not work, loudspeaker SW not sounding, shines two
Pole pipe LED1 does not flash.Due to blow a whistle can only change whistle switch chip IC2 8 foot voltages it is primary, that is to say, that
Blowing a whistle can only allow loudspeaker SW sounding primary.It can make loudspeaker SW and light emitting diode to make often to blow a whistle
LED1 has one section of working time, therefore delay circuit is arranged, since 8 feet of whistle switch chip IC2 connect NOR gate circuit
1 foot and 2 feet of IC3 is filled when 8 feet of whistle switch chip IC2 export a high level for electrolytic capacitor C5
Electricity, at this time whistle switch chip IC2 8 feet restore low level, and electrolytic capacitor C5 be charge after high level start to carry out
Discharge process, when the voltage of electrolytic capacitor C5 is high level, 3 feet of NOR gate circuit IC3 export high level, to guarantee
5 feet and 9 feet of IC3 be high level, make NOR gate circuit IC3 formed low-frequency oscillator work, and then loudspeaker SW and shine
Diode (LED) 1 persistently works, and after electrolytic capacitor C5 discharge off, 3 feet of NOR gate circuit IC3 export low level, IC3
5 feet and 9 feet be low level, NOR gate circuit IC3 formed low-frequency oscillator stop working, delay time can be by electrolytic capacitor
The capacitance size of C5 determines.
In addition the present invention connects loudspeaker SW and Light-emitting diode LED 1 between 10 feet and 8 feet of NOR gate circuit IC3,
I.e. low-frequency oscillator stops oscillation the time, and 9 feet of XOR gate electricity IC3 are low level, 8 feet and 10 feet of NOR gate circuit IC3
Voltage is identical, and sounding, Light-emitting diode LED 1 do not flash loudspeaker SW.
Claims (4)
1. a kind of device quickly positioned for small article, which is characterized in that put including shell, low-frequency oscillatory network, detection
Big circuit, microphone M1, loudspeaker SW and Light-emitting diode LED 1, microphone M1, loudspeaker SW and Light-emitting diode LED 1 are embedded in
Surface of shell, low-frequency oscillatory network and detection amplifying circuit are in shell；
The detection amplifying circuit includes resistance R1, R2, R3, R4, R5, R6, R7, R8, capacitor C1, C3, C4, electrolytic capacitor C2,
Integrated circuit IC 1, IC2, power supply E；Wherein resistance R1 and microphone M1 series connection is followed by between the anode and ground of power supply E；Resistance R2
It connects between the anode of power supply E and 3 feet of Integrated circuit IC 1；Resistance R3 connects between 3 feet and ground of Integrated circuit IC 1；Resistance
After R4 and capacitor C1 series connection, the common point of one terminating resistor R1 and microphone M1,2 feet of another termination Integrated circuit IC 1；Resistance
R5 connects between 1 foot and 2 feet of Integrated circuit IC 1；Resistance R6 and capacitor C3 series connection is followed by 1 foot and 6 feet in Integrated circuit IC 1
Between；Resistance R7 connects between 6 feet and 7 feet of Integrated circuit IC 1；Resistance R8 connects between 2 feet and 3 feet of Integrated circuit IC 2；
The anode of electrolytic capacitor C2 connects 3 feet of Integrated circuit IC 1, and cathode connects 4 feet of Integrated circuit IC 1；Capacitor C4 connects in integrated circuit
Between 7 feet of IC1 and 1 foot of Integrated circuit IC 2；4 feet of Integrated circuit IC 1 are grounded, and 5 feet and 3 feet are connected, and 8 feet connect power supply E's
Anode；6 feet of Integrated circuit IC 2 connect the anode of power supply E, 7 feet ground connection, and 8 feet connect 1 foot of Integrated circuit IC 3；
The low-frequency oscillatory network includes resistance R9, R10, R11, electrolytic capacitor C5, capacitor C6 and Integrated circuit IC 3；It is wherein electric
Resistance R9 connects between 1 foot and 2 feet of Integrated circuit IC 3；Resistance R10 and resistance R11 series connection is followed by 4 feet in Integrated circuit IC 3
Between 6 feet of Integrated circuit IC 3；The anode of electrolytic capacitor C5 connects 1 foot of Integrated circuit IC 3, cathode ground connection；The one end capacitor C6
The common point of connecting resistance R10 and R11,10 feet of another termination Integrated circuit IC 3；3 feet, 5 feet and the 9 foot phases of Integrated circuit IC 3
Even, 4 feet and 8 feet are connected, and 7 feet, 12 feet and 13 feet ground connection, 14 feet connect the anode of power supply E；The cathode of power supply E is grounded, light-emitting diodes
The anode of pipe LED1 connects 10 feet of Integrated circuit IC 3, and cathode connects 8 feet of Integrated circuit IC 3；Loudspeaker SW is connected in parallel on light-emitting diodes
The both ends of pipe LED1.
2. a kind of device quickly positioned for small article according to claim 1, which is characterized in that the integrated electricity
The model TLC27L2 of road IC1, the model UM3673 of Integrated circuit IC 2, microphone M1 are Electret condenser microphone.
3. a kind of device quickly positioned for small article according to claim 1, which is characterized in that the power supply E
For button cell.
4. a kind of device quickly positioned for small article according to claim 1, which is characterized in that the integrated electricity
The model CD4070 of road IC3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628669.3A CN108828635B (en) | 2018-06-19 | 2018-06-19 | Device for quickly positioning small-sized object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628669.3A CN108828635B (en) | 2018-06-19 | 2018-06-19 | Device for quickly positioning small-sized object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108828635A true CN108828635A (en) | 2018-11-16 |
| CN108828635B CN108828635B (en) | 2022-02-18 |
Family
ID=64142494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810628669.3A Active CN108828635B (en) | 2018-06-19 | 2018-06-19 | Device for quickly positioning small-sized object |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108828635B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152252Y (en) * | 1993-01-19 | 1994-01-05 | 钱卫东 | Electronic article-finding and defending device |
| CN201698564U (en) * | 2010-06-21 | 2011-01-05 | 李景魁 | Anti-lost device |
| CN201876977U (en) * | 2010-05-14 | 2011-06-22 | 刘治鋆 | Remote control object finder |
| CN103052974A (en) * | 2010-07-23 | 2013-04-17 | 林成珪 | Method and device for prevention loss of item and prompt search thereof |
| CN103426276A (en) * | 2013-08-23 | 2013-12-04 | 爱漫科技（北京）有限公司 | Voice article-seeking system and seeking method thereof |
| CN203616855U (en) * | 2013-11-18 | 2014-05-28 | 袁见见 | Object-searching voice device |
| CN204143606U (en) * | 2014-09-22 | 2015-02-04 | 河南师范大学 | A kind of pendant device with whistle positioning function |
| CN104574857A (en) * | 2013-10-11 | 2015-04-29 | 深圳富泰宏精密工业有限公司 | Portable electronic device with lose reminding function and use method of portable electronic device |
| CN205211131U (en) * | 2015-11-09 | 2016-05-04 | 深圳市广和通无线股份有限公司 | Acoustic control device of looking for something |
| CN205405839U (en) * | 2016-03-08 | 2016-07-27 | 广州城建职业学院 | USB flash disk ware of looking for something |
| CN205486698U (en) * | 2016-04-13 | 2016-08-17 | 河北工业大学 | Voice recognition object searching system based on single chip microcomputer control |
-
2018
- 2018-06-19 CN CN201810628669.3A patent/CN108828635B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152252Y (en) * | 1993-01-19 | 1994-01-05 | 钱卫东 | Electronic article-finding and defending device |
| CN201876977U (en) * | 2010-05-14 | 2011-06-22 | 刘治鋆 | Remote control object finder |
| CN201698564U (en) * | 2010-06-21 | 2011-01-05 | 李景魁 | Anti-lost device |
| CN103052974A (en) * | 2010-07-23 | 2013-04-17 | 林成珪 | Method and device for prevention loss of item and prompt search thereof |
| US20130120145A1 (en) * | 2010-07-23 | 2013-05-16 | Seong-Kyu Lim | Method and device for prevention loss of item and prompt search thereof |
| CN103426276A (en) * | 2013-08-23 | 2013-12-04 | 爱漫科技（北京）有限公司 | Voice article-seeking system and seeking method thereof |
| CN104574857A (en) * | 2013-10-11 | 2015-04-29 | 深圳富泰宏精密工业有限公司 | Portable electronic device with lose reminding function and use method of portable electronic device |
| CN203616855U (en) * | 2013-11-18 | 2014-05-28 | 袁见见 | Object-searching voice device |
| CN204143606U (en) * | 2014-09-22 | 2015-02-04 | 河南师范大学 | A kind of pendant device with whistle positioning function |
| CN205211131U (en) * | 2015-11-09 | 2016-05-04 | 深圳市广和通无线股份有限公司 | Acoustic control device of looking for something |
| CN205405839U (en) * | 2016-03-08 | 2016-07-27 | 广州城建职业学院 | USB flash disk ware of looking for something |
| CN205486698U (en) * | 2016-04-13 | 2016-08-17 | 河北工业大学 | Voice recognition object searching system based on single chip microcomputer control |
Non-Patent Citations (3)
| Title |
|---|
| 王伟等: "无线语音寻物***的设计", 《传感器世界》 * |
| 王韦舒等: "基于单片机的小件物品无线寻找***", 《中国新通信》 * |
| 邓雅琪等: "一种便携式语音提示器的设计", 《沈阳化工大学学报》 * |
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| Publication number | Publication date |
|---|---|
| CN108828635B (en) | 2022-02-18 |
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