CN108196476A - Handheld multimeter test method - Google Patents
Handheld multimeter test method Download PDFInfo
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- CN108196476A CN108196476A CN201711297866.3A CN201711297866A CN108196476A CN 108196476 A CN108196476 A CN 108196476A CN 201711297866 A CN201711297866 A CN 201711297866A CN 108196476 A CN108196476 A CN 108196476A
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- robot
- multimeter
- main control
- control computer
- visual apparatus
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/12—Circuits for multi-testers, i.e. multimeters, e.g. for measuring voltage, current, or impedance at will
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
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Abstract
The present invention provides a kind of handheld multimeter test methods, and multimeter is fixed by using tooling, prevent robot multimeter when stirring multimeter from moving；5520A, output source parameter are controlled by gpib bus by main control computer, 5520A is connected to switch, then by switch outconnector to multimeter by testing connecting line；Main control computer controls robot and visual apparatus by TCP/IP, the gear on multimeter is stirred by robot to be switched with range, and the control switching of the switch, realize that parameter measurement is automatically switched, acquisition of the visual apparatus to test data on the multimeter, the test data come is acquired in main control computer view-based access control model equipment and is judged that Generate Certificate report, can realize handheld multimeter automatic test.
Description
Technical field
The present invention relates to a kind of handheld multimeter test methods.
Background technology
1) in recent years, the digitized degree of instrument and meter is higher and higher, using radio, electricity as representative each quasi-instrument
Through having the technical conditions of increasingly automated metering.In radio profession, the partial parameters such as microwave, signal source have been carried out
Automatic test.From the point of view of automated software is using front and rear comparison, after automation, metrological personnel reduces the duplication of labour,
The form of original record and report on credentials can be stablized constant, and the two consistency is to be fully ensured, and lower level error is reduced.
2) metrological operation is performed in a manner of manually and constrains the efficiency of gage work and the further developing in market, is adopted
The production capacity of release metering in an automated fashion, compacting measurement technology ability are extremely urgent.
3) since metrology and measurement is related to a large amount of data record, using automated software, be conducive to improve gage work
Quality, avoid due to be manually entered/output data, record data, processing data introduce low level mistake, so as to establish metering
Customer satisfaction is continuously improved in brand；
4) since 11th Five-Year, each parameter of measurement centre has carried out the exploitation of automated software successively, but total due to lacking
Body is planned, and the Software Development Platform of different parameters is varied, and data processing, original record, report on credentials do not have consistent mould
Plate, automated software are not connect with information system, and the important informations such as instrument and equipment information, user information fail to obtain fully
It utilizes；
5) measurement centre introduces a large amount of well-educated people in recent years, these talents have the ability of making software mostly, warp
Working practice in a few years, there has also been deep understanding to gage work by these talents, are conducive to carry out metering automation software
Development.
Invention content
The purpose of the present invention is to provide a kind of handheld multimeter test methods, can realize that handheld multimeter is automatic
Change test.
To solve the above problems, the present invention provides a kind of handheld multimeter test method, including：
Multimeter is fixed with tooling, prevents robot multimeter when stirring multimeter from moving；
5520A, output source parameter are controlled by gpib bus by main control computer, 5520A is connected to by testing connecting line
Switch, then by switch outconnector to multimeter；
Main control computer controls robot and visual apparatus by TCP/IP, robot the gear on multimeter is stirred with
Range switches and the control of switch switching, realizes that parameter measurement is automatically switched, visual apparatus on the multimeter to surveying
The acquisition of data is tried, the test data come is acquired in main control computer view-based access control model equipment and is judged that Generate Certificate report.
Further, in the above-mentioned methods, main control computer controls robot and visual apparatus, robot by TCP/IP
Gear on multimeter is stirred and is switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched, depending on
Feel acquisition of the equipment to test data on the multimeter, acquired in main control computer view-based access control model equipment the test data come into
Row judgement, Generate Certificate report, including：
11) multimeter gear is pushed DC voltage shelves by robot；
12) PLC is switched to voltage line by robot；
13) robot setting source output voltage, and open；
14) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
15) robot clicks span push buttons, repeats 14 steps；
16) main control computer record data, repeat 13-15 steps；
17) robot closes source output.
Further, in the above-mentioned methods, main control computer controls robot and visual apparatus, robot by TCP/IP
Gear on multimeter is stirred and is switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched, depending on
Feel acquisition of the equipment to test data on the multimeter, acquired in main control computer view-based access control model equipment the test data come into
Row judgement, Generate Certificate report, including：
21) multimeter gear is pushed alternating voltage shelves by robot；
22) PLC is switched to voltage line by robot；
23) robot setting source output voltage, frequency, and open；
24) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
25) robot clicks span push buttons, repeats 24 steps；
26) data are recorded, repeat 23-25 steps；
27) robot closes source output.
Further, in the above-mentioned methods, main control computer controls robot and visual apparatus, robot by TCP/IP
Gear on multimeter is stirred and is switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched, depending on
Feel acquisition of the equipment to test data on the multimeter, acquired in main control computer view-based access control model equipment the test data come into
Row judgement, Generate Certificate report, including：
31) multimeter gear is pushed resistance grade by robot；
32) PLC is switched to resistance line by robot；
33) robot setting source output resistance, and open；
34) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
35) robot clicks span push buttons, repeats 34 steps；
36) main control computer record data, repeat 33-35 steps；
37) robot closes source output.
Further, in the above-mentioned methods, main control computer controls robot and visual apparatus, robot by TCP/IP
Gear on multimeter is stirred and is switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched, depending on
Feel acquisition of the equipment to test data on the multimeter, acquired in main control computer view-based access control model equipment the test data come into
Row judgement, Generate Certificate report, including：
41) multimeter gear is pushed DC current shelves by robot；
42) PLC is switched to electric current line by robot；
43) robot setting source output current, and open；
44) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)；
45) robot clicks span push buttons, repeats 44 steps；
46) main control computer record data, repeat 43-45 steps；
46) robot closes source output.
Further, in the above-mentioned methods, main control computer controls robot and visual apparatus, robot by TCP/IP
Gear on multimeter is stirred and is switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched, depending on
Feel acquisition of the equipment to test data on the multimeter, acquired in main control computer view-based access control model equipment the test data come into
Row judgement, Generate Certificate report, including：
51) multimeter gear is pushed DC current shelves by robot；
52) PLC is switched to high current line by robot；
53) robot setting source output current, and open；
54) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
55) robot clicks span push buttons, repeats 54 steps；
56) main control computer record data, repeat 53-55 steps；
57) robot closes source output.
Further, in the above-mentioned methods, main control computer controls robot and visual apparatus, robot by TCP/IP
Gear on multimeter is stirred and is switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched, depending on
Feel acquisition of the equipment to test data on the multimeter, acquired in main control computer view-based access control model equipment the test data come into
Row judgement, Generate Certificate report, including：
61) multimeter gear is pushed alternating current shelves by robot；
62) PLC is switched to electric current line by robot；
63) robot setting source output current, frequency, and open；
64) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
65) robot clicks span push buttons, repeats 64 steps；
66) main control computer record data, repeat 63-65 steps；
67) robot closes source output.
Further, in the above-mentioned methods, main control computer controls robot and visual apparatus, robot by TCP/IP
Gear on multimeter is stirred and is switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched, depending on
Feel acquisition of the equipment to test data on the multimeter, acquired in main control computer view-based access control model equipment the test data come into
Row judgement, Generate Certificate report, including：
71) multimeter gear is pushed alternating current shelves by robot；
72) PLC is switched to high current line by robot；
73) robot setting source output current, frequency, and open；
74) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
75) robot clicks span push buttons, repeats 74 steps；
76) main control computer record data, repeat 73-75 steps；
77) robot closes source output.
Compared with prior art, the present invention fixes multimeter by using tooling, prevents robot when stirring multimeter ten thousand
It is moved with table；5520A, output source parameter are controlled by gpib bus by main control computer, 5520A is connected to by testing connecting line
Switch, then by switch outconnector to multimeter；Main control computer controls robot and visual apparatus, machine by TCP/IP
People stirs the gear on multimeter to be switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched,
Acquisition of the visual apparatus to test data on the multimeter acquires the test data come in main control computer view-based access control model equipment
Judged, Generate Certificate report, can realize handheld multimeter automatic test.
Description of the drawings
Fig. 1 is the measuring system hardware connection figure of one embodiment of the invention；
Fig. 2 is the source of one embodiment of the invention, switch, multimeter line graph；
Fig. 3 is that the fixture of one embodiment of the invention fixes multimeter schematic diagram；
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
As illustrated in fig. 1 and 2, the present invention provides a kind of handheld multimeter test method, including：
Multimeter is fixed with tooling, prevents robot multimeter when stirring multimeter from moving；
5520A, output source parameter are controlled by gpib bus by main control computer, 5520A is connected to by testing connecting line
It switchs (pressure-resistant resistant to flow component), then by switch outconnector to multimeter；
Main control computer controls robot and visual apparatus by TCP/IP, robot the gear on multimeter is stirred with
Range switches and the control of switch switching, realizes that parameter measurement is automatically switched；
Acquisition of the visual apparatus to test data on the multimeter；
The test data come is acquired in main control computer view-based access control model equipment and is judged that Generate Certificate report.
Specifically, before measurement starts, 5520A half an hour is preheated, checks whether multimeter is intact, and multimeter is fixed on work
In dress (tooling position and mechanical arm, camera are fixed), DC voltage shelves, visual apparatus such as camera pair are then pushed
Quasi- multimeter, robot are placed in suitable position, and the wiring of 5520A, switch and multimeter is connected, and connect DC voltage
Shelves.
Software measurement starts, and report information is first inputted on interface, clicks and measures button main control computer from database
Gear information and end mark are read, if end mark, then it represents that measurement finishes.Gear-shifting information is read from database (to measure
Points), computer control 5520A output valves, PC reads instruction control machinery arm, camera acquisition multimeter from database
Data on liquid crystal display, are transferred to main control computer, are recorded in excel.
In one embodiment of handheld multimeter test method of the present invention, as shown in figure 3, by taking FLUKE 15B as an example, it will
Multimeter is fixed with fixture, and using the upper left corner as positioning dot, Z axis is outside for vertical paper, as shown in Fig. 3 coordinate systems：O (0,
0,0), the initial position of robot mechanical arm clamping pushes OFF, the center P (x0, y0, z0) of driving lever, Range for gear
Key position R (x1, y1, z1), alternating current-direct current switching push button C (x2, y2, z2), alternating voltage~V are 22.5 ° relative to OFF, directly
Galvanic electricity stream is 135 ° relative to OFF, similar that all gears to be measured are quantified as angle.Use Microsoft Office
The parameter of quantization is inserted database, using each model as unique database, reading database by access as database
In field information, be sent to robot as control command.
6.1 driving source
Using 5520A, as output source, the substitute products of said function can also be used in this project.It is controlled using Labview
Voltage needed for source output processed, electric current, resistance.
6.2 data acquire
Use the visual apparatus of DALSA companies, model GENIE NANO M2020.Carried out data transmission using TCP/IP,
Receiving terminal is write using Labview platforms, and transmitting terminal is provided by external coordination, using following communication protocol,
| Ht808:R:OK|FAIL |
| Ht808:T:xxx |
Using new line symbol as order end mark.Xxx is collected data, is sent by transmitting terminal, receiving terminal success
Data, return instruction OK are received, failure then returns to FAIL.It is then retransmitted when receiving data failure.
6.3 switching switch
Switching switch is designed and developed by external coordination side, is barricaded as on pcb board using component, is controlled break-make with instruction, is used
TCP/IP transport protocols.
6.4 report generation
Report in acquisition by the way of being written, and embedded VB carries out Report Operations in labview, data validity
Judgement is directly completed in excel.
6.5 testing process
Whether hand inspection multimeter damages before measurement starts, and if whether driver plate can be stirred, can liquid crystal display normally show,
Whether fuse fuses, and whether push button function is intact.
It is below measuring process using FLUKE 15B as test sample：
DC voltage shelves
11) multimeter gear is pushed DC voltage shelves by robot；
12) PLC is switched to voltage line by robot；
13) robot setting source output voltage, and open；
14) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)；
15) robot clicks span push buttons (Range), repeats 14 steps (meet required precision and skip over 15)；
16) main control computer record data, repeat 13-15 steps；
17) robot closes source output.
Alternating voltage shelves
21) multimeter gear is pushed alternating voltage shelves by robot；
22) PLC is switched to voltage line by robot；
23) robot setting source output voltage, frequency, and open；
24) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)
25) robot clicks span push buttons (Range), repeats 24 steps；
26) data are recorded, repeat 23-25 steps；
27) robot closes source output.
Resistance
31) multimeter gear is pushed resistance grade by robot；
32) PLC is switched to voltage (resistance) line by robot；
33) robot setting source output resistance, and open；
34) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)；
35) robot clicks span push buttons (Range), repeats 34 steps；
36) main control computer record data, repeat 33-35 steps；
37) robot closes source output.
DC current shelves (small-range)
41) multimeter gear is pushed DC current shelves by robot；
42) PLC is switched to electric current line by robot；
43) robot setting source output current, and open；
44) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)；
45) robot clicks span push buttons (Range), repeats 44 steps；
46) main control computer record data, repeat 43-45 steps；
46) robot closes source output.
DC current shelves (wide range)
51) multimeter gear is pushed DC current shelves by robot；
52) PLC is switched to high current line by robot；
53) robot setting source output current, and open；
54) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)；
55) robot clicks span push buttons (Range), repeats 54 steps；
56) main control computer record data, repeat 53-55 steps；
57) robot closes source output.
Alternating current shelves (small-range)
61) multimeter gear is pushed alternating current shelves by robot；
62) PLC is switched to electric current line by robot；
63) robot setting source output current, frequency, and open；
64) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)；
65) robot clicks span push buttons (Range), repeats 64 steps；
66) main control computer record data, repeat 63-65 steps；
67) robot closes source output.
Alternating current shelves (wide range)
71) multimeter gear is pushed alternating current shelves by robot；
72) PLC is switched to high current line by robot；
73) robot setting source output current, frequency, and open；
74) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)；
75) robot clicks span push buttons (Range), repeats 74 steps；
76) main control computer record data, repeat 73-75 steps；
77) robot closes source output.
Report is generated after being measured.
In conclusion the present invention fixes multimeter by using tooling, prevent robot multimeter when stirring multimeter from moving
It is dynamic；5520A, output source parameter are controlled by gpib bus by main control computer, 5520A is connected to switch by testing connecting line,
Again by switch outconnector to multimeter；Main control computer controls robot and visual apparatus, robot pair by TCP/IP
Gear on multimeter is stirred to be switched with range switching and the control of the switch, realizes that parameter measurement is automatically switched, vision
Acquisition of the equipment to test data on the multimeter acquires the test data come in main control computer view-based access control model equipment and carries out
Judgement, Generate Certificate report, can realize handheld multimeter automatic test.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
Professional further appreciates that, with reference to each exemplary unit of the embodiments described herein description
And algorithm steps, can be realized with the combination of electronic hardware, computer software or the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is performed actually with hardware or software mode, specific application and design constraint depending on technical solution.Profession
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think beyond the scope of this invention.
Obviously, those skilled in the art can carry out invention spirit of the various modification and variations without departing from the present invention
And range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range it
Interior, then the present invention is also intended to including these modification and variations.
Claims (8)
1. a kind of handheld multimeter test method, which is characterized in that including：
Multimeter is fixed with tooling, prevents robot multimeter when stirring multimeter from moving；
5520A, output source parameter are controlled by gpib bus by main control computer, 5520A is connected to switch by testing connecting line,
Again by switch outconnector to multimeter；
Main control computer controls robot and visual apparatus by TCP/IP, and the gear on multimeter is stirred for robot and range
Switching and the control of switch switching, realize that parameter measurement is automatically switched, visual apparatus on the multimeter to testing number
According to acquisition, the test data come is acquired in main control computer view-based access control model equipment and is judged that Generate Certificate report.
2. handheld multimeter test method as described in claim 1, which is characterized in that main control computer is controlled by TCP/IP
Robot processed and visual apparatus, the gear on multimeter is stirred by robot to be cut with range switching and the control of the switch
It changes, realizes that parameter measurement is automatically switched, acquisition of the visual apparatus to test data on the multimeter, main control computer is based on regarding
Feel that the test data for acquiring to come in equipment is judged that Generate Certificate report, including：
11) multimeter gear is pushed DC voltage shelves by robot；
12) PLC is switched to voltage line by robot；
13) robot setting source output voltage, and open；
14) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
15) robot clicks span push buttons, repeats 14 steps；
16) main control computer record data, repeat 13-15 steps；
17) robot closes source output.
3. handheld multimeter test method as described in claim 1, which is characterized in that main control computer is controlled by TCP/IP
Robot processed and visual apparatus, the gear on multimeter is stirred by robot to be cut with range switching and the control of the switch
It changes, realizes that parameter measurement is automatically switched, acquisition of the visual apparatus to test data on the multimeter, main control computer is based on regarding
Feel that the test data for acquiring to come in equipment is judged that Generate Certificate report, including：
21) multimeter gear is pushed alternating voltage shelves by robot；
22) PLC is switched to voltage line by robot；
23) robot setting source output voltage, frequency, and open；
24) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
25) robot clicks span push buttons, repeats 24 steps；
26) data are recorded, repeat 23-25 steps；
27) robot closes source output.
4. handheld multimeter test method as described in claim 1, which is characterized in that main control computer is controlled by TCP/IP
Robot processed and visual apparatus, the gear on multimeter is stirred by robot to be cut with range switching and the control of the switch
It changes, realizes that parameter measurement is automatically switched, acquisition of the visual apparatus to test data on the multimeter, main control computer is based on regarding
Feel that the test data for acquiring to come in equipment is judged that Generate Certificate report, including：
31) multimeter gear is pushed resistance grade by robot；
32) PLC is switched to resistance line by robot；
33) robot setting source output resistance, and open；
34) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
35) robot clicks span push buttons, repeats 34 steps；
36) main control computer record data, repeat 33-35 steps；
37) robot closes source output.
5. handheld multimeter test method as described in claim 1, which is characterized in that main control computer is controlled by TCP/IP
Robot processed and visual apparatus, the gear on multimeter is stirred by robot to be cut with range switching and the control of the switch
It changes, realizes that parameter measurement is automatically switched, acquisition of the visual apparatus to test data on the multimeter, main control computer is based on regarding
Feel that the test data for acquiring to come in equipment is judged that Generate Certificate report, including：
41) multimeter gear is pushed DC current shelves by robot；
42) PLC is switched to electric current line by robot；
43) robot setting source output current, and open；
44) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading (precision digit)；
45) robot clicks span push buttons, repeats 44 steps；
46) main control computer record data, repeat 43-45 steps；
46) robot closes source output.
6. handheld multimeter test method as described in claim 1, which is characterized in that main control computer is controlled by TCP/IP
Robot processed and visual apparatus, the gear on multimeter is stirred by robot to be cut with range switching and the control of the switch
It changes, realizes that parameter measurement is automatically switched, acquisition of the visual apparatus to test data on the multimeter, main control computer is based on regarding
Feel that the test data for acquiring to come in equipment is judged that Generate Certificate report, including：
51) multimeter gear is pushed DC current shelves by robot；
52) PLC is switched to high current line by robot；
53) robot setting source output current, and open；
54) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
55) robot clicks span push buttons, repeats 54 steps；
56) main control computer record data, repeat 53-55 steps；
57) robot closes source output.
7. handheld multimeter test method as described in claim 1, which is characterized in that main control computer is controlled by TCP/IP
Robot processed and visual apparatus, the gear on multimeter is stirred by robot to be cut with range switching and the control of the switch
It changes, realizes that parameter measurement is automatically switched, acquisition of the visual apparatus to test data on the multimeter, main control computer is based on regarding
Feel that the test data for acquiring to come in equipment is judged that Generate Certificate report, including：
61) multimeter gear is pushed alternating current shelves by robot；
62) PLC is switched to electric current line by robot；
63) robot setting source output current, frequency, and open；
64) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
65) robot clicks span push buttons, repeats 64 steps；
66) main control computer record data, repeat 63-65 steps；
67) robot closes source output.
8. handheld multimeter test method as described in claim 1, which is characterized in that main control computer is controlled by TCP/IP
Robot processed and visual apparatus, the gear on multimeter is stirred by robot to be cut with range switching and the control of the switch
It changes, realizes that parameter measurement is automatically switched, acquisition of the visual apparatus to test data on the multimeter, main control computer is based on regarding
Feel that the test data for acquiring to come in equipment is judged that Generate Certificate report, including：
71) multimeter gear is pushed alternating current shelves by robot；
72) PLC is switched to high current line by robot；
73) robot setting source output current, frequency, and open；
74) visual apparatus reads multimeter indicating value, and main control computer determines whether valid reading；
75) robot clicks span push buttons, repeats 74 steps；
76) main control computer record data, repeat 73-75 steps；
77) robot closes source output.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415455A (en) * | 2019-08-20 | 2021-02-26 | 北京振兴计量测试研究所 | Automatic calibrating device of digital multimeter |
| CN115480199A (en) * | 2022-10-12 | 2022-12-16 | 广东瓦力科技有限公司 | Automatic flow control system for automatic detection workstation robot of universal meter |
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| CN204631239U (en) * | 2015-04-14 | 2015-09-09 | 云南省计量测试技术研究院 | Electricity three shows the measuring system of automatic Verification |
| CN106597353A (en) * | 2016-11-23 | 2017-04-26 | 中国计量大学 | Machine vision-based automatic verification system for multipath hand-held digital multimeters |
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