CN106199378A - A kind of circuit board netlist rapid extracting method - Google Patents
A kind of circuit board netlist rapid extracting method Download PDFInfo
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- CN106199378A CN106199378A CN201610487934.1A CN201610487934A CN106199378A CN 106199378 A CN106199378 A CN 106199378A CN 201610487934 A CN201610487934 A CN 201610487934A CN 106199378 A CN106199378 A CN 106199378A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 230
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 230000004044 response Effects 0.000 claims description 39
- 239000000523 sample Substances 0.000 claims description 38
- 238000013507 mapping Methods 0.000 claims description 22
- 210000002683 foot Anatomy 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000010304 firing Methods 0.000 claims 1
- 239000000284 extract Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 229910000679 solder Inorganic materials 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
- G01R31/2815—Functional tests, e.g. boundary scans, using the normal I/O contacts
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- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
- G01R31/2812—Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance
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- Computer Hardware Design (AREA)
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- Tests Of Electronic Circuits (AREA)
Abstract
A kind of method that the present invention relates to circuit board netlist information rapid extraction, comprises the steps: 1, determines test point on circuit-under-test plate, obtain test point label and coordinate information；2, utilize network node analytic process that all test points on circuit-under-test plate are roughly divided into multiple network；3, respectively each network build-in test point is carried out continuity testing；4, comparison test point label, extracts Board Under Test netlist information.The present invention extracts circuit board connection relation information by contact circuit board surface solder joint, will not damage circuit-under-test plate.Meanwhile, after netlist information extracting program has been write, utilizing flying needle In-circiut tester can be automatically performed test point network and divide and the connectivity test of each network, automaticity is high, thus overcomes deficiency of the prior art.
Description
Technical field
The present invention relates to robot dynamical system technical field, a kind of circuit board netlist rapid extraction side
Method.
Background technology
On-board circuitry plate is the critical piece of electronic product on various machine, and the quality of its performance affects the matter of electronic product
Amount.Circuit board netlist information is the important evidence of circuit board repair, owing to being limited by property right protection etc., and partial circuit expanded metals table
Loss of learning, causes obstacle to electronic product guarantee on machine.At present, " flight software " is the main of circuit board Netlist Extraction field
Realization rate.
" flight software " carries out the method for Netlist Extraction: under the auxiliary of " flight " software, pass through image processing techniques
Circuit board trace image is processed, then in kind as reference with circuit board, extract circuit board netlist information.But the method needs
Circuit board will carry out grinding process to obtain PCB trace image clearly by some destructive means, this is just to circuit
Plate causes expendable destruction.It addition, the method all of circuit board netlist information is required for by artificial with reference to bruting process
The PCB trace image of middle acquisition extracts, and automaticity is the highest.
Flying needle In-circiut tester mainly uses Technology of In-circuit Test, and this technology is that the computer of a kind of circuit board is automatic
Measuring technology, it utilizes probe to contact with node to be measured, then by programming Control, constitutes test circuit in internal system,
Then measure.Flying needle In-circiut tester is utilized to be possible not only to detect the break-make of line, it is also possible to single on circuit board
Components and parts carry out a series of measurement.At present, flying needle In-circiut tester is mainly used in the detection of circuit board, is importing Board Under Test
On the premise of netlist information, to verify that Board Under Test is tested by the form of netlist, but this equipment is not yet applied to circuit
The extraction of expanded metals table information.
Summary of the invention
For the defect of above-mentioned technology, the present invention proposes a kind of circuit board netlist rapid extracting method.
A kind of circuit board netlist rapid extracting method, comprises the following steps:
(1) coating is removed: use sand blowing machine the three-proofing coating of circuit board surface to be polished and remove；If being provided with on circuit board
Bga device, also needs to take off bga device, and tin plating on the pad of bga device；
(2) determine test point: be fixed on by Board Under Test on the test section guide rail of flying needle In-circiut tester, utilize flying needle online
Circuit-under-test plate material object is taken pictures by the photographic head that tester positive and negative are fixed on traveling probe, obtains circuit-under-test plate
Positive and negative image information；
(3) test point label is set: name each test point successively, for convenience of the extraction of last netlist information, name
Principle according to " device label/pin number "；
(4) test point coordinate is obtained: in the circuit board image of positive and negative, obtain each test point successively relative to Board Under Test
Coordinate information (xn, yn)；Board Under Test is chosen two test points, via or the mechanical hole on diagonal as a reference point,
Obtain reference point relative to the coordinate (xref, yref) of Board Under Test and the coordinate relative to flying needle In-circiut tester test section
After (Xref, Yref), test points all in Board Under Test are converted to the coordinate (Xn, Yn) relative to test section, wherein Xn=xn+
Xref-xref, Yn=yn+Yref-yref；Observe the components and parts on circuit-under-test plate, select the collection of a known pin definition
Become chip, test point corresponding for the GND foot of this integrated chip is elected as GND point；It is available for two what flying needle In-circiut tester provided
In the application software of secondary exploitation, record the title of each test point and believe relative to the coordinate of flying needle In-circiut tester test section
Breath, and the test point of above-mentioned selection is labeled as GND point；
(5) all test points are divided into multiple network: be available for answering of secondary development what flying needle In-circiut tester provided
With in software, arrange and between test point and GND point, apply signal source excitation by two probes；The spy of flying needle In-circiut tester
The crown, according to the coordinate information of each test point, automatically travels through all test points, and applies pumping signal, and probe can be adopted back and be somebody's turn to do simultaneously
The response signal of test point；Application software can be set up a test point and the mapping table of corresponding response signal thereof, the most each
The response signal of test point, gives identical network number by the test point with same response signal in the mapping table；Tested
All test points of circuit board are chosen a test point, this point coordinates position recorded by step (4), a probe is moved
Moving this test point, another root probe moves to step (4) and is chosen to be the test point of GND；Utilize sending out of flying needle In-circiut tester
Send semiotic function, between test point and GND point, apply ac voltage signal；Utilize the collection signal merit of flying needle In-circiut tester
Can, the response signal of this point of probe back production by being placed in selected test point, i.e. the current signal of this path, and at flying needle
In In-circiut tester, set up the synopsis of test point label and this some response signal；Then, choose next test point, will visit
Pin moves at this test point, and the probe being placed on GND point is motionless；Repeat the above-mentioned test job of flying needle In-circiut tester,
Repeat the response signal of back production probe place test point, and add the corresponding relation of test point label with response signal to foundation
Synopsis in, until last test point of circuit-under-test plate, obtain including in circuit-under-test plate all test point labels with
The synopsis of the contrast relationship of its response signal；By the named Net1 of network number of in synopsis first test point；Read the
The response signal of two test points, compares the response signal of this signal and first test point, if identical, by second survey
The same named Net1 of network number of pilot, if difference, by newly-built for the network number of second test point for Net2；By same sample prescription
Method, reads the response signal of the 3rd test point, compares with the first two test point, if with the response signal phase of first test point
With, then by the named Net1 of network number of the 3rd test point, in like manner, if identical with second test point, the most named Net2,
If being different from, the most newly-built entitled Net3；By that analogy, press that induction signal is the most identical to be named all test points in synopsis aloud
For different network names, and record in synopsis；
(6) the connectivity test of identical network build-in test point: the synopsis obtained according to step (5), surveys online by flying needle
The probe of examination instrument moves to be had in the test point of identical network number；The connectivity utilizing flying needle In-circiut tester is tested, it is judged that
Whether two test points that probe is contacted are connected: if being connected, then maintain legacy network name constant；If differing, then mapping
One of them test point is renamed a new network number by table；Probe is according to each in test point coordinate information and mapping table
The network number of test point, after the method tested according to above-mentioned connectivity travels through all test points, examines and obtains in step (5)
Mapping table is the most correct, and modifies at mistake；
(7) network information is extracted: will be stored in the mapping table in flying needle In-circiut tester secondary development software derives；According to
To the retrieval of network number in mapping table, draw the test point with identical network number, the component's feet being i.e. connected, record at symbol
Close and net in tabular document；After all-network arrangement is completed, draw and include all component's feets on circuit-under-test plate
The document of annexation；Utilize the basic function of flying needle In-circiut tester, i.e. circuit board detecting function, on circuit-under-test plate
The parameter value of the basic devices such as resistance, electric capacity, inductance measures, and is added to parameter value corresponding relation by components and parts label
In document；Integrated chip on circuit-under-test plate, adds to components and parts label and device model corresponding relation in document；This article
Shelves are the netlist information that circuit-under-test plate is complete.
The invention has the beneficial effects as follows:
(1) use contact surface solder joint mapping circuit plate connection relation information, circuit-under-test plate will not be caused damage；
(2) network node analytic process and connectivity test is utilized to combine, it is not necessary to all on all circuit-under-test plates
Component's feet carries out connectivity test two-by-two, shortens netlist time of withdrawing information；
(3) expand flying needle In-circiut tester function, PCB Online testing technology is applied to circuit board netlist information
Extract；
(4) utilize the characteristic that automatically can travel through by the coordinate position set of flying needle Online Transaction Processing, improve automatically
Change degree.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the operating procedure flow chart of the present invention.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below right
The present invention is expanded on further.
As it is shown in figure 1, a kind of circuit board netlist rapid extracting method, comprise the following steps:
(1) coating is removed: use sand blowing machine the three-proofing coating of circuit board surface to be polished and remove；If being provided with on circuit board
Bga device, also needs to take off bga device, and tin plating on the pad of bga device；
(2) determine test point: be fixed on by Board Under Test on the test section guide rail of flying needle In-circiut tester, utilize flying needle online
Circuit-under-test plate material object is taken pictures by the photographic head that tester positive and negative are fixed on traveling probe, obtains circuit-under-test plate
Positive and negative image information；
(3) test point label is set: name each test point successively, former according to " device label/pin number " of name
Then；
(4) test point coordinate is obtained: in the circuit board image of positive and negative, obtain each test point successively relative to Board Under Test
Coordinate information (xn, yn)；Board Under Test is chosen two test points, via or the mechanical hole on diagonal as a reference point,
Obtain reference point relative to the coordinate (xref, yref) of Board Under Test and the coordinate relative to flying needle In-circiut tester test section
After (Xref, Yref), test points all in Board Under Test are converted to the coordinate (Xn, Yn) relative to test section, wherein Xn=xn+
Xref-xref, Yn=yn+Yref-yref；Observe the components and parts on circuit-under-test plate, select the collection of a known pin definition
Become chip, test point corresponding for the GND foot of this integrated chip is elected as GND point；It is available for two what flying needle In-circiut tester provided
In the application software of secondary exploitation, record the title of each test point and believe relative to the coordinate of flying needle In-circiut tester test section
Breath, and the test point of above-mentioned selection is labeled as GND point；
(5) all test points are divided into multiple network: be available for answering of secondary development what flying needle In-circiut tester provided
With in software, arrange and between test point and GND point, apply signal source excitation by two probes；The spy of flying needle In-circiut tester
The crown, according to the coordinate information of each test point, automatically travels through all test points, and applies pumping signal, and probe can be adopted back and be somebody's turn to do simultaneously
The response signal of test point；Application software can be set up a test point and the mapping table of corresponding response signal thereof, the most each
The response signal of test point, gives identical network number by the test point with same response signal in the mapping table；Tested
All test points of circuit board are chosen a test point, this point coordinates position recorded by step (4), a probe is moved
Moving this test point, another root probe moves to step (4) and is chosen to be the test point of GND；Utilize sending out of flying needle In-circiut tester
Send semiotic function, between test point and GND point, apply ac voltage signal；Utilize the collection signal merit of flying needle In-circiut tester
Can, the response signal of this point of probe back production by being placed in selected test point, i.e. the current signal of this path, and at flying needle
In In-circiut tester, set up the synopsis of test point label and this some response signal；Then, choose next test point, will visit
Pin moves at this test point, and the probe being placed on GND point is motionless；Repeat the above-mentioned test job of flying needle In-circiut tester,
Repeat the response signal of back production probe place test point, and add the corresponding relation of test point label with response signal to foundation
Synopsis in, until last test point of circuit-under-test plate, obtain including in circuit-under-test plate all test point labels with
The synopsis of the contrast relationship of its response signal；By the named Net1 of network number of in synopsis first test point；Read the
The response signal of two test points, compares the response signal of this signal and first test point, if identical, by second survey
The same named Net1 of network number of pilot, if difference, by newly-built for the network number of second test point for Net2；By same sample prescription
Method, reads the response signal of the 3rd test point, compares with the first two test point, if with the response signal phase of first test point
With, then by the named Net1 of network number of the 3rd test point, in like manner, if identical with second test point, the most named Net2,
If being different from, the most newly-built entitled Net3；By that analogy, press that induction signal is the most identical to be named all test points in synopsis aloud
For different network names, and record in synopsis；
(6) the connectivity test of identical network build-in test point: the synopsis obtained according to step (5), surveys online by flying needle
The probe of examination instrument moves to be had in the test point of identical network number；The connectivity utilizing flying needle In-circiut tester is tested, it is judged that
Whether two test points that probe is contacted are connected: if being connected, then maintain legacy network name constant；If differing, then mapping
One of them test point is renamed a new network number by table；Probe is according to each in test point coordinate information and mapping table
The network number of test point, after the method tested according to above-mentioned connectivity travels through all test points, examines and obtains in step (5)
Mapping table is the most correct, and modifies at mistake；
(7) network information is extracted: will be stored in the mapping table in flying needle In-circiut tester secondary development software derives；According to
To the retrieval of network number in mapping table, draw the test point with identical network number, the component's feet being i.e. connected, record at symbol
Close and net in tabular document；After all-network arrangement is completed, draw and include all component's feets on circuit-under-test plate
The document of annexation；Utilize the basic function of flying needle In-circiut tester, i.e. circuit board detecting function, on circuit-under-test plate
The parameter value of the basic devices such as resistance, electric capacity, inductance measures, and is added to parameter value corresponding relation by components and parts label
In document；Integrated chip on circuit-under-test plate, adds to components and parts label and device model corresponding relation in document；This article
Shelves are the netlist information that circuit-under-test plate is complete.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The technology of the industry
The personnel simply present invention it should be appreciated that the present invention is not restricted to the described embodiments, described in above-described embodiment and description
Principle, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these change and
Improvement both falls within claimed invention.Claimed scope is by appending claims and equivalent circle thereof
Fixed.
Claims (2)
1. a circuit board netlist rapid extracting method, it is characterised in that: comprise the following steps:
(1) coating is removed: use sand blowing machine the three-proofing coating of circuit board surface to be polished and remove；If being provided with BGA envelope on circuit board
Dress device, also needs to take off bga device, and tin plating on the pad of bga device；
(2) determine test point: be fixed on by Board Under Test on the test section guide rail of flying needle In-circiut tester, utilize flying needle on-line testing
Circuit-under-test plate material object is taken pictures by the photographic head that instrument positive and negative are fixed on traveling probe, obtain circuit-under-test plate just,
Verso images information；
(3) test point label is set: name each test point successively；
(4) test point coordinate is obtained: in the circuit board image of positive and negative, obtain each test point seat relative to Board Under Test successively
Mark information (xn, yn)；Board Under Test is chosen two test points, via or the mechanical hole on diagonal as a reference point, obtain
The reference point coordinate (xref, yref) relative to Board Under Test and the coordinate relative to flying needle In-circiut tester test section (Xref,
Yref), after, test points all in Board Under Test are converted to the coordinate (Xn, Yn) relative to test section, wherein Xn=xn+Xref-
Xref, Yn=yn+Yref-yref；Observe the components and parts on circuit-under-test plate, select the integrated core of a known pin definition
Sheet, elects GND point as by test point corresponding for the GND foot of this integrated chip；The secondary that is available for provided at flying needle In-circiut tester is opened
In the application software sent out, record the title of each test point and relative to the coordinate information of flying needle In-circiut tester test section,
And the test point of above-mentioned selection is labeled as GND point；
(5) all test points are divided into multiple network: the application being available for secondary development provided at flying needle In-circiut tester is soft
In part, arrange and between test point and GND point, apply signal source excitation by two probes；The probe root of flying needle In-circiut tester
According to the coordinate information of each test point, automatically traveling through all test points, and apply pumping signal, probe can adopt back this test simultaneously
The response signal of point；Application software can be set up a test point and the mapping table of corresponding response signal, relatively each test
The response signal of point, gives identical network number by the test point with same response signal in the mapping table；At circuit-under-test
All test points of plate are chosen a test point, this point coordinates position recorded by step (4), a probe is moved to
This test point, another root probe moves to step (4) and is chosen to be the test point of GND；The transmission utilizing flying needle In-circiut tester is believed
Number function, applies ac voltage signal between test point and GND point；Utilize the collection semiotic function of flying needle In-circiut tester,
The response signal of this point of probe back production by being placed in selected test point, i.e. the current signal of this path, and exist at flying needle
In line tester, set up the synopsis of test point label and this some response signal；Then, next test point is chosen, by probe
Moving at this test point, the probe being placed on GND point is motionless；Repeat the above-mentioned test job of flying needle In-circiut tester, weight
The response signal of multiple back production probe place test point, and add the corresponding relation of test point label with response signal to foundation
In synopsis, until last test point of circuit-under-test plate, obtain including in circuit-under-test plate all test point labels and its
The synopsis of the contrast relationship of response signal；By the named Net1 of network number of in synopsis first test point；Read second
The response signal of individual test point, compares the response signal of this signal and first test point, if identical, by second test
The same named Net1 of network number of point, if difference, by newly-built for the network number of second test point for Net2；By same method,
Read the response signal of the 3rd test point, compare with the first two test point, if identical with the response signal of first test point,
Then by the named Net1 of network number of the 3rd test point, in like manner, if identical with second test point, the most named Net2, if
It is different from, the most newly-built entitled Net3；By that analogy, induction signal is pressed aloud the most identical by named for test points all in synopsis
Different network names, and record in synopsis；
(6) the connectivity test of identical network build-in test point: the synopsis obtained according to step (5), by flying needle In-circiut tester
Probe move to have in the test point of identical network number；The connectivity utilizing flying needle In-circiut tester is tested, it is judged that probe
Whether two test points contacted are connected: if being connected, then maintain legacy network name constant；If differing, the most in the mapping table
One of them test point is renamed a new network number；Probe is respectively tested according in test point coordinate information and mapping table
The network number of point, after the method tested according to above-mentioned connectivity travels through all test points, examines the mapping obtained in step (5)
Table is the most correct, and modifies at mistake；
(7) network information is extracted: will be stored in the mapping table in flying needle In-circiut tester secondary development software derives；According to mapping
The retrieval of network number in firing table, draws the test point with identical network number, the component's feet being i.e. connected, and record is meeting net
In tabular document；After all-network arrangement is completed, draw and include that on circuit-under-test plate, all component's feets connect
The document of relation；Utilize the basic function of flying needle In-circiut tester, i.e. circuit board detecting function, to the electricity on circuit-under-test plate
The parameter value of the basic devices such as resistance, electric capacity, inductance measures, and adds components and parts label and parameter value corresponding relation to literary composition
In Dang；Integrated chip on circuit-under-test plate, adds to components and parts label and device model corresponding relation in document；The document
It is the netlist information that circuit-under-test plate is complete.
A kind of circuit board netlist rapid extracting method the most according to claim 1, it is characterised in that: in step (3), for
Facilitate the extraction of last netlist information, name the principle according to " device label/pin number ".
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| CN201610487934.1A CN106199378B (en) | 2016-06-28 | 2016-06-28 | A kind of circuit board netlist rapid extracting method |
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| CN201610487934.1A CN106199378B (en) | 2016-06-28 | 2016-06-28 | A kind of circuit board netlist rapid extracting method |
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| CN106199378B CN106199378B (en) | 2018-12-11 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707142A (en) * | 2017-03-07 | 2017-05-24 | 济南浪潮高新科技投资发展有限公司 | Method for inspecting electrical connection information of PIN devices in PCB (Printed Circuit Board) |
| CN109255161A (en) * | 2018-08-17 | 2019-01-22 | 国营芜湖机械厂 | A kind of method that NET net meter file generates NOD net meter file |
| CN111141954A (en) * | 2020-01-02 | 2020-05-12 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Test file generation method and device of resistor network and electronic equipment |
| CN111220830A (en) * | 2020-01-02 | 2020-06-02 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Electrical index testing method and device for multiple elements and electronic equipment |
| CN111638443A (en) * | 2020-07-03 | 2020-09-08 | 淮安杰鼎唐科技有限公司 | Flexible circuit board testing device and testing method thereof |
| CN112578263A (en) * | 2020-11-25 | 2021-03-30 | 海鹰企业集团有限责任公司 | Inspection method for circuit board starting hardware improvement |
| CN114858830A (en) * | 2022-03-17 | 2022-08-05 | 国营芜湖机械厂 | BGA multilayer circuit network table extraction method and spiral scanning auxiliary device |
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| CN109255161B (en) * | 2018-08-17 | 2023-01-31 | 国营芜湖机械厂 | Method for generating NOD netlist file from NET netlist file |
| CN111141954A (en) * | 2020-01-02 | 2020-05-12 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Test file generation method and device of resistor network and electronic equipment |
| CN111220830A (en) * | 2020-01-02 | 2020-06-02 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Electrical index testing method and device for multiple elements and electronic equipment |
| CN111638443A (en) * | 2020-07-03 | 2020-09-08 | 淮安杰鼎唐科技有限公司 | Flexible circuit board testing device and testing method thereof |
| CN112578263A (en) * | 2020-11-25 | 2021-03-30 | 海鹰企业集团有限责任公司 | Inspection method for circuit board starting hardware improvement |
| CN114858830A (en) * | 2022-03-17 | 2022-08-05 | 国营芜湖机械厂 | BGA multilayer circuit network table extraction method and spiral scanning auxiliary device |
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