CN107886936A - Musical instrument uses duration monitoring device and method - Google Patents
Musical instrument uses duration monitoring device and method Download PDFInfo
- Publication number
- CN107886936A CN107886936A CN201711006865.9A CN201711006865A CN107886936A CN 107886936 A CN107886936 A CN 107886936A CN 201711006865 A CN201711006865 A CN 201711006865A CN 107886936 A CN107886936 A CN 107886936A
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- Prior art keywords
- musical instrument
- duration
- vibration
- data
- control module
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/32—Constructional details
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
- G10H2240/171—Transmission of musical instrument data, control or status information; Transmission, remote access or control of music data for electrophonic musical instruments
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
- G10H2240/171—Transmission of musical instrument data, control or status information; Transmission, remote access or control of music data for electrophonic musical instruments
- G10H2240/181—Billing, i.e. purchasing of data contents for use with electrophonic musical instruments; Protocols therefor; Management of transmission or connection time therefor
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
Present disclose provides a kind of musical instrument to use duration monitoring device, including：SCM system, including：Vibrating sensor, discharge circuit, comparison circuit are sequentially connected, for detecting whether musical instrument is played by obtaining vibration data；Control module, it is connected with the vibration sensor signal, for performing following control logic：The vibration data that vibrating sensor obtains is received, judges whether musical instrument strikes up, and obtains duration data that musical instrument plays every time and overall uses duration data.The disclosure utilizes the data such as use duration of the vibrating sensor to obtain musical instrument, allow one to carry out more comprehensively monitoring and evaluation to the use state of musical instrument, available for second-hand musical instrument market to musical instrument use state carry out quantitative assessment, and can aid musical instruments teaching etc. field.
Description
Technical field
The present invention relates to the monitoring method and device that a kind of musical instrument uses duration, belongs to musical instrument monitoring field.Particularly relate to
And a kind of SCM system using modules such as vibrating sensor, discharge circuit, comparison circuits, musical instrument is carried out using duration
Record and assessment.
Background technology
Musical instrument is often referred to that musical sound can be sent in a variety of ways, and can carry out the utensil of act of music creation.Traditional people
Race's musical instrument is divided into four classes：Body crying musical instrument, film crying musical instrument, aerophone and chord crying musical instrument；And western musical instrument is then generally available philharmonic
Musical instrument, stringed musical instrument, keyboard instrument and percussion instrument are played to distinguish.No matter which kind of above-mentioned musical instrument, the sound sent is all by object
Vibration produces, and by Medium Propagation and a kind of wave phenomenon for being perceived by human or animal hearing organ.
With science and technology, the development of society, people impart knowledge to studentss to intelligentized musical instrument, play and the continuous depth of monitoring system research
Enter, people using pressure sensor record piano by the position of piano key and dynamics tapped, so as to assess the progress of piano study,
The song played, in addition, the pulling force being also subject to using pulling force sensor detection string, to musical instrument progress tuning, but for
Initial time, duration and the overall statistics using duration etc. that musical instrument is played every time are not recorded but well.
On the other hand, vibrating sensor can be used for catching the vibration at instruments sound position, so as to judge whether tone color is complete
U.S., in addition, most importantly it can be used to perceive the use state of musical instrument, when people beat a drum or play the musical instrument, vibrating sensor
The generation of vibration can be caught, therefore, it is necessary to utilize the data such as use duration of the vibrating sensor to obtain musical instrument so that Ren Menneng
Enough use states to musical instrument carry out more comprehensively monitoring and evaluation, and musical instrument use state is entered available for second-hand musical instrument market
Row quantitative assessment, and can aid musical instruments teaching etc. field.
Disclosure
(1) technical problems to be solved
It is set forth above at least partly to solve present disclose provides the monitoring method and device that a kind of musical instrument uses duration
Technical problem.
(2) technical scheme
According to an aspect of this disclosure, there is provided a kind of musical instrument uses duration monitoring device, including：SCM system,
Including：Vibrating sensor, discharge circuit, comparison circuit are sequentially connected, for detecting whether musical instrument enters by obtaining vibration data
Row is played；Control module, it is connected with the vibration sensor signal, for performing following control logic：Receive vibrating sensor
The vibration data of acquisition, judges whether musical instrument strikes up, and obtains duration data that musical instrument plays every time and overall when using
Long data.
In the disclosure some embodiments, described comparison circuit is connected to control module, for by the vibration letter of collection
Number compared with predetermined threshold value, judge whether to play；The comparison circuit is using the external comparison circuit of control module
Module is realized using control module.
In the disclosure some embodiments, controller clock signal is integrated with the control module piece, passes through to vibrate and passes
Sensor gathers vibration data, and duration data are played to obtain by the real-time clock timing inside vibration signal trigger control module.
In the disclosure some embodiments, the vibrating sensor is arranged on musical instrument conduct vibrations region, described vibration
Conductive area includes piano inwall, frame drum side, Chinese zither side wall；The type of described vibrating sensor is vibrated including electrodynamic type
Sensor, piezoelectric vibration pickup, condenser type vibrating sensor, induction type vibration sensor.
In the disclosure some embodiments, described musical instrument uses duration monitoring device, in addition to：
Memory module, control module is connected to, for storing duration data；And/or
Power module, it is connected to control module, including power management module and battery；Power management module, which has, overcharges guarantor
Shield, Cross prevention, charging instruction, fully charged instruction, low battery prompting function；And/or
Transport module, control module is connected to, for realizing the data transmit-receive of control module；The transport module will control
The duration data of playing that module obtains are uploaded to terminal device, realize and monitoring result is shown and analyzed.
In the disclosure some embodiments, described memory module type include SD card, TF card, NorFlash,
NandFlash；And/or the type of described battery includes dry cell, chargeable lithium battery, button cell；And/or the transmission mould
Block is wireless transport module, and its transmission means includes bluetooth, WIFI, Zigbee, eMTC, NB-IoT, LoRa；Described terminal is set
Standby type includes smart mobile phone, computer, flat board.
In the disclosure some embodiments, the musical instrument that described musical instrument is applicable using duration monitoring device includes piano, frame
Sub- drum, Chinese zither.
According to another aspect of the disclosure, there is provided a kind of musical instrument uses duration monitoring method, comprises the following steps：It is real
When monitoring vibration signal, when vibration does not occur or electric signal caused by vibrating is after discharge circuit amplifies, sentence through comparison circuit
Disconnected, when signal is not up to threshold value, system keeps holding state；When the vibration signal size detected exceedes threshold value, system
Wake up；Duration data are played in the duration of real-time clock start recording vibration inside control module, generation；By collection when playing
Long number factually when be saved in memory module, and above-mentioned data are uploaded to terminal device.
In the disclosure some embodiments, the when progress one of the real-time clock start recording vibration inside the control module
Step includes, and the duration packet of playing of generation starts containing vibration, that is, plays exact date, the moment of starting, and bullet now
Play duration, add up to use duration data to totality this moment, when vibration signal disappears or during less than threshold value, terminate timing.
In the disclosure some embodiments, in addition to step：Under identical environment, tapped and found pleasure in using different size of dynamics
The sounding position of device, sent by test and be arranged on the multiplication factor of discharge circuit properly on the basis of the size of acoustical vibration
Value.
(3) beneficial effect
It can be seen from the above technical proposal that disclosure musical instrument using duration monitoring method and device at least have it is following
One of beneficial effect：
(1) caused vibration when due to detecting instruments sound using vibrating sensor, such as：When drum surface is tapped
Vibration, vibration sent when string is stirred etc., and using vibrated under the real-time clock log inside single-chip microcomputer it is lasting when
Between, i.e. musical instrument uses duration, thus it is apparent that initial time that musical instrument uses every time, uses duration, overall uses duration
Situations such as, available for the periodic maintenance work for reminding musical instrument, and the assessment that can be worth for second-hand musical instrument provides the ginseng of a quantization
Examine；
(2) by recording each use duration of musical instrument, totally using data such as durations, moreover it can be used to assess devices for learning musical instruments
The study schedule of personnel, it is easy to reasonable arrangement study schedule, formulates study plan.
Brief description of the drawings
Fig. 1 is structural representation of the embodiment of the present disclosure musical instrument using the monitoring device of duration.
Fig. 2 is flow chart of the embodiment of the present disclosure musical instrument using the monitoring method of duration.
【Embodiment of the present disclosure main element symbol description in accompanying drawing】
1st, SCM system；2nd, musical instrument
3rd, vibrating sensor；4th, discharge circuit
5th, comparison circuit；6th, memory module
7th, transport module；8th, power module
9th, control module；10th, terminal device
Embodiment
Present disclose provides a kind of musical instrument to use duration monitoring device and method, can with it is detailed, record in real time it is not happy together
The totality of device uses duration, every time using information such as duration, frequency of use, and feed back to terminal device by transport module, institute
Stating monitoring device has the characteristics of simple in construction, applied widely.
For the purpose, technical scheme and advantage of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the disclosure is further described.
The some embodiments of the disclosure will be done with reference to appended accompanying drawing in rear and more comprehensively describe to property, some of but not complete
The embodiment in portion will be illustrated.In fact, the various embodiments of the disclosure can be realized in many different forms, and should not be construed
To be limited to this several illustrated embodiment；Relatively, there is provided these embodiments cause the disclosure to meet applicable legal requirement.
In first exemplary embodiment of the disclosure, there is provided musical instrument uses duration monitoring device.Fig. 1 is the disclosure
First embodiment musical instrument uses the structural representation of the monitoring device of duration.As shown in figure 1, disclosure musical instrument is monitored using duration
Device includes：SCM system 1 and terminal device 10.
The present embodiment musical instrument is described in detail using each part of duration monitoring device individually below.
The SCM system 1 includes：Control module 9, vibrating sensor 3, discharge circuit 4, comparison circuit 5, storage mould
Block 6, transport module 7 and power module 8, wherein：
Microprocessor, memory, analog-digital converter, controller clock signal etc. are integrated with control module 9.For leading to
The vibration data collected is crossed, realizes the monitoring using duration situation for including playing every time to musical instrument, and by being wirelessly transferred
Module feedback realizes the remote intelligent management to musical instrument to terminal device.
Vibrating sensor 3 is used to detect whether musical instrument starts to play acquisition vibration data, and further obtains playing duration
Data；By vibrating sensor 3 gather vibration data, by the real-time clock timing inside vibration signal trigger control module 9 Lai
Duration data are played in acquisition.On the premise of musical instrument normal work is not influenceed, the vibrating sensor 3 is arranged on musical instrument vibration and passed
Region is led, and is sequentially connected discharge circuit 4, comparison circuit 5, the I/O interfaces of control module 9.Described vibrating sensor can be with
It is electrodynamic type vibrating sensor, piezoelectric vibration pickup, condenser type vibrating sensor, induction type vibration sensor etc..It is preferred that
Ground, using piezoelectric ceramics as vibrating sensor 3, piezoelectric ceramics is a kind of function ceramics with piezo-electric effect, piezo-electric effect
Refer to be stressed a kind of phenomenon for inducing electric field or causing strain by electric field, therefore pressure ceramic can turn mechanical oscillation
Turn to electric signal.Described musical instrument can be piano, frame drum, Chinese zither etc.；Described conduct vibrations region can be in piano
Wall, frame drum side, Chinese zither side wall etc..
In one embodiment, described comparison circuit 5 is used to compare the vibration signal of collection with predetermined threshold value,
In the embodiment of the disclosure one, its function can realize that the comparison is electric by the external special comparison circuit module of control circuit 9
Road module is connected to the I/O interfaces of control module 9, realizes vibrating data collection；In different embodiments, the comparison circuit
Function can also be realized by control module 9.
Memory module 6 is connected to the SPI interface of control module 9, for storing the duration data played.Described storage mould
Block can be SD card, TF card, NorFlash, NandFlash etc..Preferably, the memory module 6 is SD card.
Transport module 7 is connected to the USART interfaces of control module 9, is responsible for the transmitting-receiving work of data.The transport module 7
The duration data of playing that the vibrating sensor 3 that control module 9 obtains is obtained are uploaded to terminal device 10.Preferably, the biography
Defeated module 7 is wireless transport module, and its transmission means can be bluetooth, WiFi, Zigbee, eMTC, NB-IoT, LoRa etc..Institute
The terminal device 10 stated can be smart mobile phone, computer, flat board etc..
Power module 8 is connected to the I of control module 92C interface, including power management module and battery.Power management module
With overcharge protection, Cross prevention, charging instruction, it is fully charged instruction, low battery remind etc. function, the power management module energy
It is enough that red light prompting is sent in not enough power supply.Described battery can be dry cell, chargeable lithium battery, button cell etc..
So far, first embodiment of the present disclosure musical instrument is finished using duration monitoring device introduction.
In second exemplary embodiment of the disclosure, there is provided a kind of musical instrument uses duration monitoring method.Fig. 2 is this
Open second embodiment musical instrument uses the flow chart of duration monitoring method.As shown in Fig. 2 it the described method comprises the following steps：
Step S1, power-on, activation system, now system be in holding state, real-time monitoring vibration signal, work as vibration
Do not occur or electric signal judges after discharge circuit amplifies, then through comparison circuit caused by vibrating, when signal is not up to threshold value
When, system will keep holding state；When the vibration signal size detected exceedes threshold value, it is judged as starting to play, system
Wake up, go to step S2；
Step S2, the real-time clock start recording musical instrument inside control module start the time played and play duration；
In the step S2 inside control module real-time clock start recording vibration duration further comprise, generation
Packet starts containing vibration, that is, plays the moment at exact date of starting, corresponding specific duration, adds up to totality this moment
Use the data such as duration；When vibration signal disappears or during less than threshold value, timing is completed.
Step S3, the duration data of playing of collection are saved in memory module, and above-mentioned data are uploaded to terminal device.
Preferably, the memory module is SD card, and above-mentioned data, which by bluetooth or WIFI etc. are wirelessly transferred form and are uploaded to terminal, to be set
It is standby.
The musical instrument uses duration monitoring method, also includes step before step S1：
Step S0, under identical environment, using the sounding position of different size of dynamics percussion instrument, test sends sound
The size of vibration, the multiplication factor of discharge circuit is arranged on suitable value as benchmark, can so exclude some by
The triggering caused by trickle disturbance or false touch.
The data now generated are stored in SD card in real time with TXT text formattings, are available for people to take at any time and are checked, this
Outside, the system also supports the wireless transmission means such as wifi, can send data message to intelligent terminals such as computer, mobile phones,
Long-range monitoring is realized, is convenient for people to check the behaviour in service of musical instrument at any time；In fields such as musical instrument teaching, additionally it is possible to learned for assessing
Habit progress, in second-hand musical instrument trade market, the assessment that can be worth for second-hand musical instrument provides the reference of a quantization.The system architecture
It is simple and convenient to operate, there is broad prospect of application.
In order to reach the purpose of brief description, in above-described embodiment 1, any technical characteristic narration for making same application is all
And in this, without repeating identical narration.
So far, second embodiment of the present disclosure musical instrument is finished using duration monitoring method introduction.
So far, the embodiment of the present disclosure is described in detail combined accompanying drawing.It should be noted that in accompanying drawing or say
In bright book text, the implementation that does not illustrate or describe is form known to a person of ordinary skill in the art in art, and
It is not described in detail.In addition, the above-mentioned definition to each element and method be not limited in mentioning in embodiment it is various specific
Structure, shape or mode, those of ordinary skill in the art simply can be changed or replaced to it.
Furthermore word "comprising" does not exclude the presence of element or step not listed in the claims.Before element
Word "a" or "an" does not exclude the presence of multiple such elements.
Specification and the word of ordinal number such as " first ", " second ", " the 3rd " etc. used in claim, with modification
Corresponding element, itself is not meant to that the element has any ordinal number, does not also represent the suitable of a certain element and another element
Order in sequence or manufacture method, the use of those ordinal numbers are only used for enabling the element with certain name and another tool
The element for having identical name can make clear differentiation.
In addition, unless specifically described or the step of must sequentially occur, the order of above-mentioned steps, which has no, is limited to above institute
Row, and can change or rearrange according to required design.And above-described embodiment can based on design and reliability consideration, that
This mix and match uses using or with other embodiment mix and match, i.e., the technical characteristic in different embodiments can be with independent assortment
Form more embodiments.
The disclosure can be by means of including the hardware of some different elements and by means of properly programmed computer
Realize.The all parts embodiment of the disclosure can realize with hardware, or to be run on one or more processor
Software module is realized, or is realized with combinations thereof.It will be understood by those of skill in the art that can be in practice using micro-
Processor or digital signal processor (DSP) are some or all in the relevant device according to the embodiment of the present disclosure to realize
The some or all functions of part.The disclosure be also implemented as a part for performing method as described herein or
Whole equipment or program of device (for example, computer program and computer program product).Such journey for realizing the disclosure
Sequence can store on a computer-readable medium, or can have the form of one or more signal.Such signal can
Obtained with being downloaded from internet website, either provide on carrier signal or provided in the form of any other.
Those skilled in the art, which are appreciated that, to be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Member or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, it can use any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit requires, summary and accompanying drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
Replace.Also, in if the unit claim of equipment for drying is listed, several in these devices can be by same hard
Part item embodies.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description to the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The disclosure of shield requires features more more than the feature being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments all as the disclosure.
Particular embodiments described above, the purpose, technical scheme and beneficial effect of the disclosure are carried out further in detail
Describe in detail bright, should be understood that the specific embodiment that the foregoing is only the disclosure, be not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution and improvements done etc., the guarantor of the disclosure should be included in
Within the scope of shield.
Claims (10)
1. a kind of musical instrument uses duration monitoring device, including：
SCM system (1), including：
Vibrating sensor (3), discharge circuit (4), comparison circuit (5) are sequentially connected, for by obtaining vibration data detection pleasure
Whether device is played；
Control module (9), it is connected with the vibrating sensor (3) signal, for performing following control logic：
The vibration data that vibrating sensor (3) obtains is received, judges whether musical instrument strikes up, and obtain what musical instrument was played every time
Duration data and totality use duration data.
2. musical instrument according to claim 1 uses duration monitoring device, described comparison circuit (5) is connected to control module
(9), for the vibration signal of collection to be compared with predetermined threshold value, judge whether to play；The comparison circuit (5) is adopted
Realized with the external comparison circuit module of control module (9) or using control module (9).
3. musical instrument according to claim 2 uses duration monitoring device, clock letter is integrated with control module (9) piece
Number controller, vibration data is gathered by vibrating sensor (3), during by internal real-time of vibration signal trigger control module (9)
Clock timing plays duration data to obtain.
4. musical instrument according to claim 3 uses duration monitoring device, the vibrating sensor (3) is vibrated installed in musical instrument
Conductive area, described conduct vibrations region include piano inwall, frame drum side, Chinese zither side wall；Described vibrating sensor
Type include electrodynamic type vibrating sensor, piezoelectric vibration pickup, condenser type vibrating sensor, inductance type vibrating sensing
Device.
5. musical instrument according to claim 1 uses duration monitoring device, in addition to：
Memory module (6), control module (9) is connected to, for storing duration data；And/or
Power module (8), it is connected to control module (9), including power management module and battery；Power management module, which has, to be overcharged
Protection, Cross prevention, charging instruction, fully charged instruction, low battery prompting function；And/or
Transport module (7), control module (9) is connected to, for realizing the data transmit-receive of control module (9)；The transport module
(7) by control module (9) obtain duration data of playing be uploaded to terminal device (10), realize to monitoring result carry out display and
Analysis.
6. musical instrument according to claim 5 uses duration monitoring device, wherein,
Described memory module (6) type includes SD card, TF card, NorFlash, NandFlash；And/or
The type of described battery includes dry cell, chargeable lithium battery, button cell；And/or
The transport module (7) is wireless transport module, its transmission means include bluetooth, WIFI, Zigbee, eMTC, NB-IoT,
LoRa；The type of described terminal device (10) includes smart mobile phone, computer, flat board.
7. musical instrument according to claim 1 uses duration monitoring device, its applicable musical instrument includes piano, frame drum, Gu
Zither.
8. a kind of musical instrument uses duration monitoring method, monitored using the musical instrument as described in claim any one of 1-7 using duration
Device, comprise the following steps：
Real-time monitoring vibration signal, when vibration does not occur or electric signal caused by vibrating is after discharge circuit amplifies, through comparing
Circuit judges, when signal is not up to threshold value, system keeps holding state；When the vibration signal size detected exceedes threshold value
When, system wake-up；
Duration data are played in the duration of real-time clock start recording vibration inside control module, generation；
The duration data of playing of collection are saved in memory module in real time, and above-mentioned data are uploaded to terminal device.
9. musical instrument according to claim 8 uses duration monitoring method, the real-time clock inside the control module starts
The duration vibrated is recorded to further comprise,
Generation duration packet of playing start containing vibration, that is, play exact date, the moment of starting, and now when playing
It is long, add up use duration data to totality this moment, when vibration signal disappears or during less than threshold value, end timing.
10. musical instrument according to claim 9 uses duration monitoring method, in addition to step：
Under identical environment, using the sounding position of different size of dynamics percussion instrument, acoustical vibration is sent by test
The multiplication factor of discharge circuit is arranged on suitable value on the basis of size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711006865.9A CN107886936A (en) | 2017-10-25 | 2017-10-25 | Musical instrument uses duration monitoring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711006865.9A CN107886936A (en) | 2017-10-25 | 2017-10-25 | Musical instrument uses duration monitoring device and method |
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| Publication Number | Publication Date |
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| CN107886936A true CN107886936A (en) | 2018-04-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711006865.9A Pending CN107886936A (en) | 2017-10-25 | 2017-10-25 | Musical instrument uses duration monitoring device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220043401A1 (en) * | 2020-06-10 | 2022-02-10 | Daniel Walklin | Multi-factor verification timing and displaying system |
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|---|---|---|---|---|
| CN104575450A (en) * | 2015-02-06 | 2015-04-29 | 北京邮电大学 | Measurement method for sinking load of piano keys |
| CN204808564U (en) * | 2015-07-28 | 2015-11-25 | 陈文震 | A wireless Intelligence device and musical instrument wireless monitoring system for musical instrument |
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2017
- 2017-10-25 CN CN201711006865.9A patent/CN107886936A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575450A (en) * | 2015-02-06 | 2015-04-29 | 北京邮电大学 | Measurement method for sinking load of piano keys |
| CN204808564U (en) * | 2015-07-28 | 2015-11-25 | 陈文震 | A wireless Intelligence device and musical instrument wireless monitoring system for musical instrument |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220043401A1 (en) * | 2020-06-10 | 2022-02-10 | Daniel Walklin | Multi-factor verification timing and displaying system |
| US11940762B2 (en) * | 2020-06-10 | 2024-03-26 | Daniel Walklin | Multi-factor verification timing and displaying system |
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