CN109637501A - Radiator in-situ measurement mechanism - Google Patents
Radiator in-situ measurement mechanism Download PDFInfo
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- CN109637501A CN109637501A CN201811569344.9A CN201811569344A CN109637501A CN 109637501 A CN109637501 A CN 109637501A CN 201811569344 A CN201811569344 A CN 201811569344A CN 109637501 A CN109637501 A CN 109637501A
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C1/00—General design of pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards
- G10C1/06—General design of pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards of harpsichords spinets or similar stringed musical instruments
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C9/00—Methods, tools or materials specially adapted for the manufacture or maintenance of musical instruments covered by this subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Image Processing (AREA)
Abstract
The present invention relates to a kind of radiator in-situ measurement mechanisms, comprising: tension measuring device, setting are connect, for measuring the tension on string, to obtain and export corresponding real-time strain numerical value near tuning nail with string；Signal analysis equipment issues tension alarm signal for receiving real-time strain numerical value, and when real-time strain numerical value is not within the scope of default dynamics；CF storage chip, connect with signal analysis equipment, and for storing default dynamics range, default dynamics range is made of dynamics upper limit threshold and dynamics lower threshold；Signal analysis equipment is also used to issue tension when real-time strain numerical value is within the scope of default dynamics and close mark signal；Request triggering equipment, connect with radiator identification equipment, for when receiving the first control command, issuing position correction request, is also used to when receiving the second control command, issues position and keep request.By means of the invention it is possible to improve the self-protection ability of piano.
Description
Technical field
The present invention relates to upright piano field more particularly to a kind of radiator in-situ measurement mechanisms.
Background technique
Upright piano range is broad, and volume is grand, and tone color variation is abundant, can express a variety of different music moods, or
It is rigid or soft, it is by fits and starts can be just right；High pitch is clear and melodious, and middle pitch is plentiful, and bass is rich, can imitate entire symphony orchestra
Effect.The central pedal of upright piano is the muffler pedal for reducing overall loudness when necessary, will have felt gear in string after stepping on
Before reduce volume.Soundboard is box inside qin body, therefore some total droning feelings.
Summary of the invention
In order to which quality is easy the technical issues of being affected when solving that upright piano is excessively close apart from radiator in the prior art,
The present invention provides a kind of radiator in-situ measurement mechanisms, and the traversal based on preset shape curve is executed in image to be processed,
Each image-region for traversing preset shape curve is based on each target treatment region as each target treatment
Each uniform interference strength in domain determines the uniform interference strength of representativeness of the image to be processed, and described representative equal
When even interference strength transfinites, introduces midpoint filter apparatus progress specific aim and interference is gone to operate；In above-mentioned targetedly image procossing
On the basis of, when upright piano perimeter detection is to radiator and excessively close radiator, timely trigger position amendment request, to avoid
The quality of upright piano is influenced by radiator baking.
According to an aspect of the present invention, a kind of radiator in-situ measurement mechanism is provided, the mechanism includes:
Tension measuring device, setting is connect near tuning nail with string, for measuring the tension on the string,
To obtain and export corresponding real-time strain numerical value.
More specifically, in radiator in-situ measurement mechanism, further includes:
Signal analysis equipment, setting are connect, for receiving the reality near tuning nail with the tension measuring device
When tension values issue tension alarm signal and when the real-time strain numerical value is not within the scope of default dynamics.
More specifically, in radiator in-situ measurement mechanism, further includes:
CF storage chip is connect with the signal analysis equipment, for storing the default dynamics range, the pre set force
Degree range is made of dynamics upper limit threshold and dynamics lower threshold.
More specifically, in radiator in-situ measurement mechanism: the signal analysis equipment is also used to described real-time
When tension values are within the scope of the default dynamics, issue tension and close mark signal.
More specifically, in radiator in-situ measurement mechanism, further includes:
Request triggering equipment, connect with radiator identification equipment, for issuing position when receiving the first control command
Amendment request, is also used to when receiving the second control command, issues position and keeps request；Network captures equipment, and setting is being pushed up
It covers, for carrying out video capture movement to top cover surrounding scene, to obtain and export corresponding top cover circumferential images；Signal is cut
Subset is captured equipment with the network and is connect, for identification the quantity of the object in the top cover circumferential images, based on described
The quantity of object executes the uniform formula region segmentation to the top cover circumferential images, to obtain multiple images region, wherein described
The quantity of object is more, and the quantity of pixel occupied by each image-region of acquisition is fewer；Curve traverses equipment, with institute
The connection of signal cutting equipment is stated, for receiving described multiple images region, is executed in the top cover circumferential images based on default
The traversal of pattern curve, each image-region for traversing preset shape curve is as each target treatment；It is dry
Identification equipment is disturbed, is connect with curve traversal equipment, for receiving each target treatment, and to each target
Processing region executes uniform interference strength identification operation, to obtain the uniform interference strength of each target treatment, and base
The uniform interference strength of representativeness of the top cover circumferential images is determined in the uniform interference strength of each target treatment；Institute
It states in disturbance ecology equipment, the representative of the top cover circumferential images is determined based on the uniform interference strength of each target treatment
The uniform interference strength of property includes: the uniform interference that frequency of occurrence is most frequent in the uniform interference strength by each target treatment
Representativeness uniform interference strength of the intensity as the top cover circumferential images；Midpoint filter apparatus, respectively with the signal cutting
Equipment is connected with the disturbance ecology equipment, for receiving the uniform interference strength of representativeness, and described representative uniform
Interference strength executes midpoint filtering processing to the top cover circumferential images, to obtain more than or equal to when presetting uniform interference strength
Corresponding midpoint filtering image, be also used to the representative uniformly interference strength be less than it is described preset uniform interference strength when,
It is exported the top cover circumferential images as midpoint filtering image；Radiator identifies equipment, connect with the midpoint filter apparatus,
For the midpoint filtering image and default radiator reference pattern to be carried out similarity analysis, and in the midpoint filter apparatus
The middle area that there is the region and the region transfinited with the similarity of the default radiator reference pattern is more than or equal to default
When area threshold, the first control command is issued, the second control command is otherwise issued.
Specific embodiment
The embodiment of radiator in-situ measurement mechanism of the invention will be described in detail below.
Since grand piano compares occupied space, people just want grand piano to be erected use.There have been morning for this
The upright piano of phase.So grand piano is more much earlier than upright piano.Upright piano is cheap, occupies little space, and becomes
The purchase object of fan.Upright piano uses a kind of staggered design scheme of string, has effectively saved height and thickness.?
Upright piano height before this is up to 2.4 meters.Present is only 1-2 meters high.Upright piano is by string column, soundboard, bracket, keyboard
System includes black and white key and strike note mallet, pedal machines include mandril and pedal and shell totally six most of composition.
The string column of upright piano are high, middle pitch string is made of steel wire；Bass string is made of steel wire plus red copper wrapping.
Soundboard is wooden structures.Timber requires soft, flexible, easy conduction vibration, is best with kahikatea or Chinese parasol tree.Bracket includes
Cast iron bracket and timbering two parts.Keyboard system black and white key is mainly wooden or ivory, bakelite are made；The common wood of sound Chui
System.Pedal machines use metal structure.Shell is paint decorations boarding.
In order to overcome above-mentioned deficiency, the present invention has built a kind of radiator in-situ measurement mechanism, can effectively solve the problem that corresponding
The technical issues of.
The radiator in-situ measurement mechanism shown according to an embodiment of the present invention includes:
Tension measuring device, setting is connect near tuning nail with string, for measuring the tension on the string,
To obtain and export corresponding real-time strain numerical value.
Then, continue that the specific structure of radiator in-situ measurement mechanism of the invention is further detailed.
In radiator in-situ measurement mechanism, further includes:
Signal analysis equipment, setting are connect, for receiving the reality near tuning nail with the tension measuring device
When tension values issue tension alarm signal and when the real-time strain numerical value is not within the scope of default dynamics.
In radiator in-situ measurement mechanism, further includes:
CF storage chip is connect with the signal analysis equipment, for storing the default dynamics range, the pre set force
Degree range is made of dynamics upper limit threshold and dynamics lower threshold.
In radiator in-situ measurement mechanism: the signal analysis equipment is also used to exist in the real-time strain numerical value
When within the scope of the default dynamics, issues tension and close mark signal.
In radiator in-situ measurement mechanism, further includes:
Request triggering equipment, connect with radiator identification equipment, for issuing position when receiving the first control command
Amendment request, is also used to when receiving the second control command, issues position and keeps request；
Network captures equipment, is arranged on top cover, for carrying out video capture movement to top cover surrounding scene, to obtain simultaneously
Export corresponding top cover circumferential images；
Signal cutting equipment is captured equipment with the network and is connect, for identification the object in the top cover circumferential images
Quantity, quantity based on the object executes the uniform formula region segmentation to the top cover circumferential images, to obtain multiple figures
As region, wherein the quantity of the object is more, and the quantity of pixel occupied by each image-region of acquisition is fewer；
Curve traverses equipment, connect with the signal cutting equipment, for receiving described multiple images region, on the top
The traversal based on preset shape curve, each image-region for traversing preset shape curve are executed in lid circumferential images
As each target treatment；
Disturbance ecology equipment is connect with curve traversal equipment, for receiving each target treatment, and it is right
Each target treatment executes uniform interference strength identification operation, to obtain the uniform interference of each target treatment
Intensity, and determine that the representativeness of the top cover circumferential images is uniformly interfered based on the uniform interference strength of each target treatment
Intensity；
In the disturbance ecology equipment, the top cover four is determined based on the uniform interference strength of each target treatment
Uniformly interference strength includes: frequency of occurrence most frequency in the uniform interference strength by each target treatment to the representativeness of all images
Representativeness uniform interference strength of numerous uniform interference strength as the top cover circumferential images；
Midpoint filter apparatus is connect, for receiving respectively with the signal cutting equipment and the disturbance ecology equipment
Representative uniform interference strength is stated, and when the representative uniformly interference strength is more than or equal to and presets uniform interference strength, it is right
The top cover circumferential images execute midpoint filtering processing, to obtain corresponding midpoint filtering image, are also used in the representativeness
Uniform interference strength be less than it is described when presetting uniform interference strength, the top cover circumferential images are defeated as midpoint filtering image
Out；
Radiator identifies equipment, connect with the midpoint filter apparatus, for dissipating the midpoint filtering image with default
Hot device reference pattern carries out similarity analysis, and exists and the default radiator reference pattern in the midpoint filter apparatus
The area in region and the region that transfinites of similarity when being more than or equal to preset area threshold value, issue the first control command, it is no
Then issue the second control command.
In radiator in-situ measurement mechanism: being arranged between the disturbance ecology equipment and the midpoint filter apparatus
There are one 16 data to keep in chip；
Wherein, the SOC chip that different model is respectively adopted in the disturbance ecology equipment and the midpoint filter apparatus is come real
It is existing.
In radiator in-situ measurement mechanism, further includes:
Parameter extraction equipment and follow processing equipment, be located at the midpoint filter apparatus and radiator identification equipment it
Between.
In radiator in-situ measurement mechanism: the parameter extraction equipment is connect with the midpoint filter apparatus, is used
In receiving the midpoint filtering image, the signal-to-noise ratio of each of midpoint filtering image subject area is determined, and be based on midpoint
The signal-to-noise ratio in each object region determines the current signal of entire midpoint filtering image in filtering image.
In radiator in-situ measurement mechanism: it is described follow processing equipment respectively with the radiator identify equipment and
The parameter extraction equipment connection, for being based on receiving when the current signal received is more than or equal to preset ratio threshold value
To current signal to the midpoint filtering image execute respective intensities Wiener filtering processing with obtain and export wiener filter
Wave image, also based on the current signal received to the Wiener Filtering execute respective intensities homomorphic filtering processing with
Acquisition follows processing image, and follows the processing image replacement midpoint filtering image to be sent to the radiator identification for described
Equipment.
In radiator in-situ measurement mechanism: described that processing equipment is followed to be also used in the current signal received
When less than preset ratio threshold value, the Wiener filtering processing and second of the first fixing intensity is successively executed to the midpoint filtering image
The homomorphic filtering of fixing intensity, which is handled, follows processing image to obtain, and follows processing image to replace the midpoint filtering for described
Image is sent to the radiator identification equipment.
In addition, System on Chip, abbreviation SOC namely system on chip.It is said from narrow sense angle, he is information system core
The integrated chip of the heart is that system core component is integrated on one chip；It is said from broadest scope, SOC is a microminiature system
System, if central processing unit (CPU) is brain, then SOC is exactly the system for including brain, heart, eyes and hand.Both at home and abroad
Academia, which is generally inclined to, is defined as SOC by microprocessor, Analog IP core, (or the piece external storage control of digital IP kernel and memory
Interface) it integrates on a single chip, he is usually customization, or the standardized product towards special-purpose.What SOC was defined
Basic content is mainly both ways: one is his composition, the second is his forming process.The composition of system level chip, which can be, is
Irrespective of size chip controls logic module, microprocessor/microcontroller CPU core module, digital signal processor DSP module, insertion
Memory module and the external interface module communicated, the analog front-end module containing ADC/DAC, power supply provides and function
Consume management module, SOC wireless for one there are also RF front-end module, user define logic (he can by FPGA or ASIC reality
It is existing) and microelectron-mechanical module, it is often more important that a SOC chip be embedded with basic software (RDOS or COS and other answer
With software) module or the user software that can be loaded into etc..
Using radiator in-situ measurement mechanism of the invention, when excessively close apart from radiator for upright piano in the prior art
Quality is easy the technical issues of being affected, and by executing the traversal based on preset shape curve in image to be processed, is used for
Each image-region that preset shape curve is traversed is as each target treatment, based on each target treatment
Each uniform interference strength determines the uniform interference strength of representativeness of the image to be processed, and described representative uniformly dry
When disturbing intensity transfinites, introduces midpoint filter apparatus progress specific aim and interference is gone to operate；In the base of above-mentioned targetedly image procossing
On plinth, when upright piano perimeter detection is to radiator and excessively close radiator, timely trigger position amendment request, to avoid vertical
The quality of piano is influenced by radiator baking.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention are right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (10)
1. a kind of radiator in-situ measurement mechanism, the mechanism include:
Tension measuring device, setting are connect, for measuring the tension on the string, to obtain near tuning nail with string
It obtains and exports corresponding real-time strain numerical value.
2. radiator in-situ measurement as described in claim 1 mechanism, which is characterized in that the mechanism further include:
Signal analysis equipment, setting are connect near tuning nail with the tension measuring device, for receiving described real-time
Power numerical value, and when the real-time strain numerical value is not within the scope of default dynamics, issue tension alarm signal.
3. radiator in-situ measurement as claimed in claim 2 mechanism, which is characterized in that the mechanism further include:
CF storage chip is connect with the signal analysis equipment, for storing the default dynamics range, the default dynamics model
It encloses and is made of dynamics upper limit threshold and dynamics lower threshold.
4. radiator in-situ measurement as claimed in claim 3 mechanism, it is characterised in that:
The signal analysis equipment is also used to when the real-time strain numerical value is within the scope of the default dynamics, is issued tension and is closed
Mark signal.
5. radiator in-situ measurement as claimed in claim 4 mechanism, which is characterized in that the mechanism further include:
Request triggering equipment, connect with radiator identification equipment, for issuing position correction when receiving the first control command
Request, is also used to when receiving the second control command, issues position and keeps request；
Network captures equipment, is arranged on top cover, for carrying out video capture movement to top cover surrounding scene, to obtain and export
Corresponding top cover circumferential images；
Signal cutting equipment is captured equipment with the network and is connect, for identification the number of the object in the top cover circumferential images
Amount, the quantity based on the object executes the uniform formula region segmentation to the top cover circumferential images, to obtain multiple images area
Domain, wherein the quantity of the object is more, and the quantity of pixel occupied by each image-region of acquisition is fewer；
Curve traverses equipment, connect with the signal cutting equipment, for receiving described multiple images region, in the top cover four
The traversal based on preset shape curve is executed in all images, each image-region for traversing preset shape curve as
Each target treatment；
Disturbance ecology equipment is connect, for receiving each target treatment, and to each with curve traversal equipment
A target treatment executes uniform interference strength identification operation, strong with the uniform interference for obtaining each target treatment
Degree, and determine that the representativeness of the top cover circumferential images is uniformly interfered by force based on the uniform interference strength of each target treatment
Degree；
In the disturbance ecology equipment, the top cover surrounding figure is determined based on the uniform interference strength of each target treatment
Picture representativeness uniformly interference strength include: in the uniform interference strength by each target treatment frequency of occurrence it is most frequent
Representativeness uniform interference strength of the uniform interference strength as the top cover circumferential images；
Midpoint filter apparatus is connect, for receiving the generation respectively with the signal cutting equipment and the disturbance ecology equipment
The uniform interference strength of table, and when the representative uniformly interference strength is more than or equal to and presets uniform interference strength, to described
Top cover circumferential images execute midpoint filtering processing, to obtain corresponding midpoint filtering image, are also used to described representative uniform
Interference strength be less than it is described when presetting uniform interference strength, using the top cover circumferential images as the output of midpoint filtering image；
Radiator identifies equipment, connect with the midpoint filter apparatus, is used for the midpoint filtering image and default radiator
Reference pattern carries out similarity analysis, and there is the phase with the default radiator reference pattern in the midpoint filter apparatus
When being more than or equal to preset area threshold value like the area for spending the region and the region transfinited, the first control command is issued, is otherwise sent out
Second control command out.
6. radiator in-situ measurement as claimed in claim 5 mechanism, it is characterised in that:
It is provided with one 16 data between the disturbance ecology equipment and the midpoint filter apparatus and keeps in chip；
Wherein, the SOC chip of different model is respectively adopted to realize in the disturbance ecology equipment and the midpoint filter apparatus.
7. radiator in-situ measurement as claimed in claim 6 mechanism, which is characterized in that the mechanism further include:
Parameter extraction equipment and processing equipment is followed, is located between the midpoint filter apparatus and radiator identification equipment.
8. radiator in-situ measurement as claimed in claim 7 mechanism, it is characterised in that:
The parameter extraction equipment is connect with the midpoint filter apparatus, for receiving the midpoint filtering image, determines midpoint
The signal-to-noise ratio of each of filtering image subject area, and the signal-to-noise ratio based on each object region in the filtering image of midpoint is true
The current signal of fixed entire midpoint filtering image.
9. radiator in-situ measurement as claimed in claim 8 mechanism, it is characterised in that:
It is described that processing equipment is followed to identify that equipment and the parameter extraction equipment are connect with the radiator respectively, for receiving
When the current signal arrived is more than or equal to preset ratio threshold value, based on the current signal received to the midpoint filtering image
The Wiener filtering for executing respective intensities is handled to obtain and export Wiener Filtering, also based on the current signal pair received
The homomorphic filtering that the Wiener Filtering executes respective intensities, which is handled, follows processing image to obtain, and follows processing for described
Image replaces the midpoint filtering image and is sent to the radiator identification equipment.
10. radiator in-situ measurement as claimed in claim 9 mechanism, it is characterised in that:
It is described that processing equipment is followed to be also used to filter the midpoint when the current signal received is less than preset ratio threshold value
Wave image successively execute the first fixing intensity Wiener filtering processing and the second fixing intensity homomorphic filtering processing with obtain with
The processing image replacement midpoint filtering image is followed to be sent to the radiator identification equipment with processing image, and by described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811569344.9A CN109637501B (en) | 2018-12-21 | 2018-12-21 | Piano radiator detection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811569344.9A CN109637501B (en) | 2018-12-21 | 2018-12-21 | Piano radiator detection mechanism |
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| CN109637501A true CN109637501A (en) | 2019-04-16 |
| CN109637501B CN109637501B (en) | 2020-11-24 |
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| CN201811569344.9A Active CN109637501B (en) | 2018-12-21 | 2018-12-21 | Piano radiator detection mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186510A (en) * | 2019-08-30 | 2020-05-22 | 高雪亚 | Voice alarm platform, method and storage medium based on field detection |
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| US20020035912A1 (en) * | 1999-01-28 | 2002-03-28 | Barney Jonathan A. | Vibratory string for musical instrument |
| CN103808414A (en) * | 2013-10-25 | 2014-05-21 | 陕西晟辉投资有限公司 | Ultra-long distance heat source detector |
| CN208060064U (en) * | 2018-01-25 | 2018-11-06 | 常州市新创智能科技有限公司 | Yarn tension detection apparatus |
| CN208091076U (en) * | 2018-04-18 | 2018-11-13 | 贵州师范学院 | A kind of piano damp-proof device |
| CN108986774A (en) * | 2018-09-13 | 2018-12-11 | 金丘科技（深圳）有限公司 | Fixator and stringed musical instrument |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020035912A1 (en) * | 1999-01-28 | 2002-03-28 | Barney Jonathan A. | Vibratory string for musical instrument |
| CN103808414A (en) * | 2013-10-25 | 2014-05-21 | 陕西晟辉投资有限公司 | Ultra-long distance heat source detector |
| CN208060064U (en) * | 2018-01-25 | 2018-11-06 | 常州市新创智能科技有限公司 | Yarn tension detection apparatus |
| CN208091076U (en) * | 2018-04-18 | 2018-11-13 | 贵州师范学院 | A kind of piano damp-proof device |
| CN108986774A (en) * | 2018-09-13 | 2018-12-11 | 金丘科技（深圳）有限公司 | Fixator and stringed musical instrument |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186510A (en) * | 2019-08-30 | 2020-05-22 | 高雪亚 | Voice alarm platform, method and storage medium based on field detection |
| CN111186510B (en) * | 2019-08-30 | 2020-11-17 | 杨丽 | Voice alarm platform, method and storage medium based on field detection |
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| Publication number | Publication date |
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| CN109637501B (en) | 2020-11-24 |
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Denomination of invention: Piano radiator detection mechanism Effective date of registration: 20210706 Granted publication date: 20201124 Pledgee: Zhejiang Luqiao Taizhou rural commercial bank Limited by Share Ltd. Pledgor: Taizhou Yikai Packaging Co.,Ltd. Registration number: Y2021330000812 |
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