CN107741539A - A kind of keyboard tester - Google Patents
A kind of keyboard tester Download PDFInfo
- Publication number
- CN107741539A CN107741539A CN201710902049.XA CN201710902049A CN107741539A CN 107741539 A CN107741539 A CN 107741539A CN 201710902049 A CN201710902049 A CN 201710902049A CN 107741539 A CN107741539 A CN 107741539A
- Authority
- CN
- China
- Prior art keywords
- workbench
- electric cylinder
- keyboard
- rotating disk
- compressor
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The present invention provides a kind of keyboard tester,Including rotating disk,Alarm,Workbench one,Noise transducer,Signal lamp,Workbench two,Pressure sensor,Hairbrush,Support bar,Electric cylinder three,Workbench three,Compressor,Alarm is arranged on the upper surface of workbench one,Noise transducer is arranged on the left side of workbench one,The design solves user of service during using keyboard in fact,The problem of producing noise pollution,Alarm is installed in the upper surface of workbench two,Pressure sensor is arranged on the front side of workbench two,The design solves the problems, such as keyboard crushing resistance deficiency in process of production,Compressor is installed in the upper surface of workbench three with electric cylinder three,Hairbrush is arranged on the right side of electric cylinder three,The design is solved in detection,Dust in keyboard can cause testing result the problem of error to be present,Testing efficiency of the present invention is high,It is easy to operation,Economize on resources,It is practical.
Description
Technical field
The present invention relates to technical field of measurement and test, specially a kind of keyboard tester.
Background technology
With science and technology progress, electronic product it is more and more extensive be applied to family and office, especially electricity
The electronic products such as brain, essential instrument, computer are needed to its each side before dispatching from the factory in even more being lived as people
Performance is tested, such as its keypad function is tested, and keyboard is the most frequently used and most important input equipment, passes through key
English alphabet, numeral, punctuation mark etc. can be input in computer by disk, so as to send order, input data to computer
Deng.Originally this kind of keyboard is used for brand name computer, and such as HP, association's brand name computer all take the lead in employing this kind of keyboard, by extensive
Favorable comment, and once once it had been considered as the characteristic of brand name computer.Over time, in the market gradually also occur it is independent have it is each
The product of kind shortcut function is individually sold, and with special driving and setting software, personalization can be also realized on compatible
Operation.Keyboard tester is to carry out comprehensive automatic test to the crushing resistance and sound of keyboard.
In the prior art, each key is typically pressed by tester to reach the triggering to each button on keyboard, it is artificial to touch
There is waste of manpower in the test mode of hair, artificial test error is big, the testing time is long, the low problem of testing efficiency, and existing
The detection device not detection to keyboard crushing resistance, the problem of causing keyboard crushing resistance deficiency in process of production, and it is existing
Detection device does not detect to keyboard sound, causes user of service during using keyboard, what keyboard was sent
Sound is excessive, the problem of producing noise pollution, and the mechanism that existing detection device is not cleared up the keyboard before detection,
Cause in detection, the dust in keyboard can cause testing result the problem of error to be present, and in summary, existing equipment is not
The needs of people can be met, be now badly in need of a kind of new keyboard tester to solve the above problems.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the present invention to provide a kind of keyboard tester, to solve the above-mentioned back of the body
The problem of being proposed in scape technology, the present invention is easy to use, simple to operate, and systematicness is high, practical.
To achieve the above object, the present invention provides following technical scheme:A kind of keyboard tester, including apparatus main body,
Noise measuring mechanism, resistance to compression testing agency and cleaning mechanism, described device main body include electric power output component, mounting table, turned
Disk and printed circuit board, the electric power output component are arranged on rotating disk inner ring, and the mounting table is arranged on disk upper surface, described
Digital analog converter, single-chip microcomputer and analog-digital converter are welded with printed circuit board, the noise measuring mechanism lifts including arch
Bar one, electric cylinder one, alarm, workbench one, noise transducer and printed circuit board, the workbench one are arranged on the rotating disk right side
Side, the electric cylinder one are installed in the upper surface of workbench one, the right side lower surface of arch elevating lever one installation with alarm
In the upper surface of electric cylinder one, the left side lower surface of arch elevating lever one is provided with noise transducer, and the noise transducer leads to
Cross data wire with analog-digital converter to be connected, the digital analog converter is connected by data wire with alarm, the resistance to compression inspection
Surveying mechanism includes arch elevating lever two, electric cylinder two, signal lamp, workbench two, pressure sensor and printed circuit board, the work
Make platform two to be arranged on the upside of rotating disk, the electric cylinder two is arranged on the upper surface of workbench two, the arch elevating lever with signal lamp
Two rear side lower surfaces are assemblied in the upper surface of electric cylinder two, and the front side lower surface of arch elevating lever two is provided with pressure sensor,
The pressure sensor is connected by data wire with analog-digital converter, and the digital analog converter passes through data wire and signal lamp phase
Connection, the cleaning mechanism includes hairbrush, support bar, electric cylinder three, workbench three, compressor, air jet pipe and puff prot, described
Workbench three is arranged on the left of rotating disk, and the compressor is installed in the upper surface of workbench three, the electric cylinder with electric cylinder three
Three are assemblied in compressor rear end face, and the hairbrush is arranged on lower surface on the right side of support bar, and the support bar left side is arranged on electricity
Dynamic three right surface of cylinder, the air jet pipe are arranged on the right side of compressor, and the puff prot is arranged on the right side of air jet pipe.
Further, the analog-digital converter is connected by data wire with single-chip microcomputer, and the single-chip microcomputer passes through data wire
It is connected with digital analog converter.
Further, the electric cylinder one, electric cylinder two, electric cylinder three, compressor, alarm and signal lamp pass through
Wire is connected with electric power output component.
Further, the puff prot is connected by air jet pipe with compressor.
Further, the mounting table is provided with four, and four mounting table symmetry arrangements are in rotating disk upper surface.
Further, the hairbrush is arranged to sided configuration.
Further, the rotating disk is fixedly connected with the output end of motor.
Compared with prior art, the beneficial effects of the invention are as follows:Because the present invention with the addition of arch elevating lever one, electric cylinder
First, alarm, workbench one, noise transducer and printed circuit board one, the design achieves the present invention to keyboard sound
Sound is detected, and solves original detection device and keyboard sound is not detected, cause user of service using
During keyboard, the sound that keyboard is sent is excessive, produce noise pollution the problem of;Because the present invention with the addition of arch elevating lever
2nd, electric cylinder two, signal lamp, workbench two, pressure sensor and printed circuit board two, the design achieves the present invention to key
Disk crushing resistance is detected, and is solved detection of original detection device not to keyboard crushing resistance, is caused in process of production
The problem of keyboard crushing resistance deficiency;Because the present invention with the addition of hairbrush, support bar, electric cylinder three, workbench three, compressor, jet
Pipe and puff prot, the design achieves the present invention to clear up the keyboard before detection, solves original detection and sets
The standby mechanism not cleared up the keyboard before detection, cause in detection, the dust in keyboard can cause testing result to deposit
The error the problem of.
Brief description of the drawings
Fig. 1 is a kind of structural representation of keyboard tester of the present invention;
Fig. 2 is the structural representation of cleaning mechanism in a kind of keyboard tester of the present invention;
Fig. 3 is the structural representation of noise measuring mechanism in a kind of keyboard tester of the present invention;
Fig. 4 is noise transducer operation principle block diagram in a kind of keyboard tester of the present invention;
Fig. 5 is the structural representation of resistance to compression testing agency in a kind of keyboard tester of the present invention;
Fig. 6 is pressure sensor operation principle block diagram in a kind of keyboard tester of the present invention.
In reference:1. electric power output component;2. mounting table;3. rotating disk;4. noise monitoring mechanism;5. resistance to compression detection machine
Structure;6. cleaning mechanism;41. arch elevating lever one;42. electric cylinder one;43. alarm;44. workbench one;45. noise senses
Device;51. arch elevating lever two;52. electric cylinder two;53. signal lamp;54. workbench two;55. pressure sensor;61. hairbrush;
62. support bar;63. electric cylinder three;64. workbench three;65. compressor;66. air jet pipe;67. puff prot.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1-6 are referred to, the present invention provides a kind of technical scheme:A kind of keyboard tester, including apparatus main body, noise
Testing agency, resistance to compression testing agency 5 and cleaning mechanism 6, apparatus main body include electric power output component 1, mounting table 2, the and of rotating disk 3
Printed circuit board, electric power output component 1 are arranged on the inner ring of rotating disk 3, and mounting table 2 is arranged on the upper surface of rotating disk 3, on printed circuit board
It is welded with digital analog converter, single-chip microcomputer and analog-digital converter.
Noise measuring mechanism includes arch elevating lever 1, electric cylinder 1, alarm 43, workbench 1 and noise and passed
Sensor 45, workbench 1 are arranged on the right side of rotating disk 3, and electric cylinder 1 is installed in the upper end of workbench 1 with alarm 43
Face, the right side lower surface of arch elevating lever 1 are arranged on the upper surface of electric cylinder 1, the left side lower surface of arch elevating lever 1 peace
Equipped with noise transducer 45, noise transducer 45 is connected by data wire with analog-digital converter, and digital analog converter passes through data
Line is connected with alarm 43.
Resistance to compression testing agency 5 includes arch elevating lever 2 51, electric cylinder 2 52, signal lamp 53, workbench 2 54 and pressure
Sensor 55, workbench 2 54 are arranged on the upside of rotating disk 3, and electric cylinder 2 52 is arranged on the upper end of workbench 2 54 with signal lamp 53
Face, the rear side lower surface of arch elevating lever 2 51 are assemblied in the upper surface of electric cylinder 2 52, the front side lower surface of arch elevating lever 2 51 peace
Equipped with pressure sensor 55, pressure sensor 55 is connected by data wire with analog-digital converter, and digital analog converter passes through data
Line is connected with signal lamp 53.
Cleaning mechanism 6 includes hairbrush 61, support bar 62, electric cylinder 3 63, workbench 3 64, compressor 65, air jet pipe 66
With puff prot 67, workbench 3 64 is arranged on the left side of rotating disk 3, and compressor 65 is installed on workbench 3 64 with electric cylinder 3 63
End face, electric cylinder 3 63 are assemblied in the rear end face of compressor 65, and hairbrush 61 is arranged on the right side lower surface of support bar 62, and support bar 62 is left
End face is arranged on 3 63 right surface of electric cylinder, and air jet pipe 66 is arranged on the right side of compressor 65, and puff prot 67 is arranged on air jet pipe 66
Right side.
Analog-digital converter is connected by data wire with single-chip microcomputer, and single-chip microcomputer is connected by data wire with digital analog converter
Connect, electric cylinder 1, electric cylinder 2 52, electric cylinder 3 63, compressor 65, alarm 43 and signal lamp 53 by wire with
Electric power output component 1 is connected, and puff prot 67 is connected by air jet pipe 66 with compressor 65, and mounting table 2 is provided with four, and four
For the individual symmetry arrangement of mounting table 2 in the upper surface of rotating disk 3, hairbrush 61 is arranged to sided configuration, and the output end of rotating disk 3 and motor is consolidated
Fixed connection.
The present invention is at work:Keyboard is placed on the upper surface of mounting table 2 by user of service, by electric power output component 1 with it is external
Power supply connects, and external power supply sends electric energy to electric power output component 1, and electric power output component 1 sends electric energy by wire to
Motor, motor convert electric energy to mechanical energy, and drive rotating disk 3 to rotate clockwise, and rotating disk 3 is driven using frictional force
Mounting table 2 rotates.
When mounting table 2 turns to 61 lower end of hairbrush, electric energy is sent to electric cylinder three by electric power output component 1 by wire
63 and compressor 65, electric cylinder 3 63 drives support frame 62 to move backward, and support frame 62 moves backward with electric brush 61, hairbrush 61
The keyboard of lower section is cleared up, while compressor 65 converts electric energy to mechanical energy, and conveyed air by air jet pipe 66
To puff prot 67, puff prot 67 sprays air, and when air passes through keyboard, due to the effect of power, air can be to the ash on keyboard
Dirt is cleared up, and the design achieves the present invention to clear up the keyboard before detection, solves original detection device
The mechanism not cleared up the keyboard before detection, cause in detection, the dust in keyboard can cause testing result to exist
The problem of error.
When mounting table 2 turns to 55 lower end of pressure sensor, while user of service inputs critical value to single-chip microcomputer 2 57,
Electric energy is sent to electric cylinder 2 52 by electric power output component 1, and electric cylinder 2 52 drives arch elevating lever 2 51 to move downward, arch
Elevating lever 2 51 drives pressure sensor 55 to move downward, and pressure sensor 55 is pressed keyboard, and pressure sensor 55 is examined
Pressure measurement force value, and measured value is sent to analog-digital converter using data wire, analog-digital converter converts analog signals into numeral
Signal, and data signal is sent to by single-chip microcomputer by data wire, single-chip microcomputer data signal is compared with critical value with dividing
Analysis, when data signal is higher than critical value, the instruction of single-chip microcomputer output control, and digital analog converter is sent to by data wire, number
Weighted-voltage D/A converter converts digital signals into analog signal, and is sent to signal lamp 53 by data wire, and signal lamp 53 is bright, illustrates quilt
Keyboard crushing resistance deficiency is detected, keyboard crushing resistance is detected the design achieves the present invention, original detection is solved and sets
The standby not detection to keyboard crushing resistance, the problem of causing keyboard crushing resistance deficiency in process of production.
When mounting table 2 turns to 45 lower end of noise transducer, while user of service inputs critical value to single-chip microcomputer 1,
Electric energy is sent to electric cylinder 1 by electric power output component 1 by wire, and electric cylinder 1 drives arch elevating lever about one 41
Motion, arch elevating lever 1 drive noise transducer 45 to move up and down, and when pressing button on keyboard, button sends sound, makes an uproar
Sonic transducer 45 detects volume value, and measured value is sent into analog-digital converter using data wire, and analog-digital converter, which will simulate, to be believed
Number be converted into data signal, and single-chip microcomputer be sent to by data wire, single-chip microcomputer data signal and critical value are carried out analysis with
Compare, when data signal is higher than critical value, single-chip microcomputer sends control instruction and is sent to digital analog converter by data wire, number
Weighted-voltage D/A converter data signal is converted into analog signal, and is sent to alarm 43 by data wire, while alarm 43 is reported
It is alert, illustrate to make a noise during keyboard use, keyboard sound is detected the design achieves the present invention, solve
Original detection device does not detect to keyboard sound, causes user of service during using keyboard, key
The sound that disk is sent is excessive, produce noise pollution the problem of.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above, for this area skill
For art personnel, it is clear that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing substantially from the present invention spirit or
In the case of essential characteristic, the present invention can be realized in other specific forms.Which point therefore, no matter from the point of view of, all should incite somebody to action
Embodiment regards exemplary as, and be it is nonrestrictive, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that all changes fallen in the implication and scope of the equivalency of claim are included in the present invention
It is interior.Any reference in claim should not be considered as to the involved claim of limitation.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of keyboard tester, including apparatus main body, noise measuring mechanism, resistance to compression testing agency(5)And cleaning mechanism
(6), it is characterised in that:Described device main body includes electric power output component(1), mounting table(2), rotating disk(3)And printed circuit board,
The electric power output component(1)Installed in rotating disk(3)Inner ring, the mounting table(2)Installed in rotating disk(3)Upper surface, the print
Digital analog converter, single-chip microcomputer and analog-digital converter are welded with circuit board processed;
The noise measuring mechanism includes arch elevating lever one(41), electric cylinder one(42), alarm(43), workbench one(44)
And noise transducer(45), the workbench one(44)It is arranged on rotating disk(3)Right side, the electric cylinder one(42)With alarm
(43)It is installed in workbench one(44)Upper surface, the arch elevating lever one(41)Right side lower surface is arranged on electric cylinder one
(42)Upper surface, the arch elevating lever one(41)Left side lower surface is provided with noise transducer(45), the noise transducer
(45)It is connected by data wire with analog-digital converter, the digital analog converter passes through data wire and alarm(43)It is connected;
The resistance to compression testing agency(5)Including arch elevating lever two(51), electric cylinder two(52), signal lamp(53), workbench two
(54)And pressure sensor(55), the workbench two(54)It is arranged on rotating disk(3)Upside, the electric cylinder two(52)With signal
Lamp(53)Installed in workbench two(54)Upper surface, the arch elevating lever two(51)Rear side lower surface is assemblied in electric cylinder two
(52)Upper surface, the arch elevating lever two(51)Front side lower surface is provided with pressure sensor(55), the pressure sensor
(55)It is connected by data wire with analog-digital converter, the digital analog converter passes through data wire and signal lamp(53)It is connected;
The cleaning mechanism(6)Including hairbrush(61), support bar(62), electric cylinder three(63), workbench three(64), compressor
(65), air jet pipe(66)And puff prot(67), the workbench three(64)It is arranged on rotating disk(3)Left side, the compressor(65)
With electric cylinder three(63)It is installed in workbench three(64)Upper surface, the electric cylinder three(63)It is assemblied in compressor(65)Rear end
Face, the hairbrush(61)It is arranged on support bar(62)Right side lower surface, the support bar(62)Left side is arranged on electric cylinder three
(63)Right surface, the air jet pipe(66)It is arranged on compressor(65)Right side, the puff prot(67)It is arranged on air jet pipe(66)
Right side.
A kind of 2. keyboard tester according to claim 1, it is characterised in that:The analog-digital converter passes through data wire
It is connected with single-chip microcomputer, the single-chip microcomputer is connected by data wire with digital analog converter.
A kind of 3. keyboard tester according to claim 1, it is characterised in that:The electric cylinder one(42), electric cylinder
Two(52), electric cylinder three(63), compressor(65), alarm(43)And signal lamp(53)Pass through wire and electric power output structure
Part(1)It is connected.
A kind of 4. keyboard tester according to claim 1, it is characterised in that:The puff prot(67)Pass through air jet pipe
(66)With compressor(65)It is connected.
A kind of 5. keyboard tester according to claim 1, it is characterised in that:The mounting table(2)Four are provided with,
Four mounting tables(2)Symmetry arrangement is in rotating disk(3)Upper surface.
A kind of 6. keyboard tester according to claim 1, it is characterised in that:The hairbrush(61)It is arranged to bilateral knot
Structure.
A kind of 7. keyboard tester according to claim 1, it is characterised in that:The rotating disk(3)With motor
Output end is fixedly connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710902049.XA CN107741539A (en) | 2017-09-29 | 2017-09-29 | A kind of keyboard tester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710902049.XA CN107741539A (en) | 2017-09-29 | 2017-09-29 | A kind of keyboard tester |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107741539A true CN107741539A (en) | 2018-02-27 |
Family
ID=61236330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710902049.XA Withdrawn CN107741539A (en) | 2017-09-29 | 2017-09-29 | A kind of keyboard tester |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107741539A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109557190A (en) * | 2018-12-07 | 2019-04-02 | 南京大学 | The method and apparatus of analog signal drive electromagnet simulation finger tapping keyboard |
CN113145476A (en) * | 2021-05-18 | 2021-07-23 | 江苏力德尔电子信息技术有限公司 | Keyboard quality detection device |
US20220404315A1 (en) * | 2021-06-21 | 2022-12-22 | Primax Electronics Ltd. | Resonance detection system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106895967A (en) * | 2017-02-27 | 2017-06-27 | 中山市捷信科技服务有限公司 | A kind of disc type automated test device |
-
2017
- 2017-09-29 CN CN201710902049.XA patent/CN107741539A/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106895967A (en) * | 2017-02-27 | 2017-06-27 | 中山市捷信科技服务有限公司 | A kind of disc type automated test device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109557190A (en) * | 2018-12-07 | 2019-04-02 | 南京大学 | The method and apparatus of analog signal drive electromagnet simulation finger tapping keyboard |
CN113145476A (en) * | 2021-05-18 | 2021-07-23 | 江苏力德尔电子信息技术有限公司 | Keyboard quality detection device |
US20220404315A1 (en) * | 2021-06-21 | 2022-12-22 | Primax Electronics Ltd. | Resonance detection system |
US11598751B2 (en) * | 2021-06-21 | 2023-03-07 | Primax Electronics Ltd. | Resonance detection system for peripheral interface device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107741539A (en) | A kind of keyboard tester | |
CN110514427A (en) | A kind of elastic property detection device of spring production and processing | |
CN106895967B (en) | A kind of disc type automated test device | |
CN201716378U (en) | Portable comprehensive tester | |
CN211406077U (en) | Interactive touch screen button testing arrangement | |
CN106680642A (en) | Power-on test stand system for switch cabinets | |
CN109883638B (en) | Masonry structure anti-seismic toughness detection device and detection method | |
CN206470240U (en) | A kind of inner-walls of duct the cannot-harm-detection device | |
CN101201378A (en) | Intermittent disconnection testing system for electric contact piece | |
CN207301981U (en) | Pressure touch keyboard based on optical sensor | |
CN211927150U (en) | Computer connector connects and pulls out power of inserting accredited testing organization | |
CN201130226Y (en) | Test system for intermittent disconnection of electric contact piece | |
CN101556504A (en) | Flexible keyboard with mouse | |
CN209884127U (en) | Fatigue test device for electronic sphygmomanometer | |
CN214793796U (en) | New energy automobile bearing early failure stethoscope | |
CN207908599U (en) | A kind of potentiometer device for detecting performance | |
CN106027812A (en) | Line inspection device for 110 type voice distribution frame | |
CN207557406U (en) | A kind of GIS flashover positioning devices | |
CN215005131U (en) | Miniature portable instrument of scanning | |
CN211856870U (en) | Detection apparatus for appearance is put in cubical switchboard ultrasonic wave office | |
CN206975063U (en) | A kind of staircase or the velocity measuring device on pavement | |
CN111579950A (en) | Ultrasonic partial discharge diagnostic system | |
CN206594651U (en) | A kind of computer software testing device | |
CN206410951U (en) | Product design strength of materials test device | |
CN206039499U (en) | Novel multi -functional computer hardware's integrated test bench |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180227 |
|
WW01 | Invention patent application withdrawn after publication |