CN107329077A - A kind of PCB soft boards drain current test method and device - Google Patents
A kind of PCB soft boards drain current test method and device Download PDFInfo
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- CN107329077A CN107329077A CN201710699464.XA CN201710699464A CN107329077A CN 107329077 A CN107329077 A CN 107329077A CN 201710699464 A CN201710699464 A CN 201710699464A CN 107329077 A CN107329077 A CN 107329077A
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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]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
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- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A kind of PCB soft boards drain current test method and device provided in an embodiment of the present invention, belong to detection of electrical leakage technical field.This method carries out electric leakage current test with full sheet test mode by elder generation to the whole M pieces PCB soft boards for needing to test, and then causes when PCB soft board quantity to be tested is more, can disposably be tested, without all PCB soft boards are tested one by one.When M piece PCB soft boards not by leak electricity current test when, again with multi-disc test mode, electric leakage current test is carried out to the N group PCB soft boards being divided into by M piece PCB soft boards, tested by being grouped, testing efficiency and accuracy rate can be further improved on the premise of without testing one by one.Finally when any one group be grouped in test is not over electric leakage current test, monolithic test mode is carried out, electric leakage current test is carried out to every a piece of PCB soft boards in packet one by one, so as to rapidly obtain in every group not by the PCB soft boards for the current test that leaks electricity.
Description
Technical field
The present invention relates to detection of electrical leakage technical field, in particular to a kind of PCB soft boards drain current test method and dress
Put.
Background technology
Because PC, mobile phone or homogeneous communications interiors of products PCB soft boards need to carry out electric leakage current test, but existing test
Instrument is manual test instrument, can only one by one be tested by manually when test, so that, there is test in the prior art
The technical problem that precision is low and efficiency is low.
The content of the invention
The present invention provides a kind of PCB soft boards drain current test method and device, it is intended to improve above-mentioned technical problem.
A kind of PCB soft boards drain current test method that the present invention is provided, applied to MCU, methods described includes：Surveyed with full sheet
Whether the whole M pieces PCB soft boards for needing to test are carried out electric leakage current test by examination mode, determine the M pieces PCB soft boards by leakage
Testing current；For it is no when, with multi-disc test mode, leakage current is carried out to the N group PCB soft boards being divided into by the M pieces PCB soft boards
Whether test, determine the M pieces PCB soft boards by the current test that leaks electricity, N is bag in the integer more than or equal to 1, every group of PCB soft board
Include at least two panels PCB soft boards；For it is no when, the P group PCB soft boards not by test are determined from the N groups PCB soft boards, with
Monolithic test mode, carries out electric leakage current test to every PCB soft board in the P groups PCB soft boards, determines the P groups PCB soft boards
Whether by the current test that leaks electricity, P is the integer less than N and more than 0.
Preferably, it is described with full sheet test mode, electric leakage current test is carried out to the whole M pieces PCB soft boards for needing to test, really
Whether the M pieces PCB soft boards are determined by the current test that leaks electricity, including：With full sheet test mode, the of whole M piece PCB soft boards is obtained
One leakage current value, M is the integer more than or equal to 2；Determine whether first leakage current value is less than the first permissible value, to determine
M piece PCB soft boards are stated whether by the current test that leaks electricity.
Preferably, it is described for it is no when, with multi-disc test mode, to the N group PCB soft boards being divided into by the M pieces PCB soft boards
Electric leakage current test is carried out, whether the M pieces PCB soft boards are determined by the current test that leaks electricity, including：Obtain by the M pieces PCB soft boards
The leakage current value of every group of PCB soft board in the N groups PCB soft boards being divided into, N is the integer more than or equal to 1, every group of PCB soft board
Include at least two panels PCB soft boards；Judge whether the leakage current value of every group of PCB soft board is less than the second permissible value；If so, then
Every group of PCB soft board is determined by the current test that leaks electricity, and every group of PCB soft board is marked, and is recorded by electric leakage
The group number of current test.
Preferably, whether the leakage current value for judging every group of PCB soft board is less than after the second permissible value, the side
Method also includes：If not, it is determined that every group of PCB soft board is entered rower by every group of PCB soft board not by the current test that leaks electricity
Note, and group number not by the current test that leaks electricity is recorded, to determine P groups PCB not by test from the N groups PCB soft boards
Soft board.
Preferably, it is described with monolithic test mode, leakage current survey is carried out to every PCB soft board in the P groups PCB soft boards
Whether examination, determine the P groups PCB soft boards by the current test that leaks electricity, P is the integer less than N and more than 0, including：
With monolithic test mode, every leakage current value of every PCB soft board in the P groups PCB soft boards is obtained, P is small
In N and more than 0 integer；Judge whether the every leakage current value is less than the 3rd permissible value；If so, the every PCB is soft
Plate is marked, and records the quantity of the PCB soft boards by leakage testses；Based on the quantity of the PCB soft boards by leakage testses,
Judge the P groups PCB soft boards whether by the current test that leaks electricity.
A kind of PCB soft boards leakage current test device that the present invention is provided, including：MCU, switchboard and LED display board, it is described
LED display board and the switchboard are coupled with the MCU；The switchboard is used for the switch for controlling M piece PCB soft boards, so that
The MCU with full sheet test mode when carrying out leakage testses, and all switches on the switchboard are opened and work as described
MCU with multi-disc test mode when carrying out leakage testses, and the partial switch on the switchboard is opened and as the MCU
When carrying out leakage testses with monolithic test mode, one on the switchboard is opened；The LED display board is used
In display testing result；The MCU is used for full sheet test mode, and leakage current is carried out to the whole M pieces PCB soft boards for needing to test
Whether test, determine the M pieces PCB soft boards by the current test that leaks electricity；The MCU be used for be additionally operable to for it is no when, surveyed with multi-disc
Examination mode, carries out electric leakage current test to the N group PCB soft boards being divided into by the M pieces PCB soft boards, determines that the M pieces PCB soft boards are
No N is the integer more than or equal to 1 by the current test that leaks electricity, and every group of PCB soft board includes at least two panels PCB soft boards；And it is described
MCU be used for be additionally operable to for it is no when, the P group PCB soft boards not by test are determined from the N groups PCB soft boards, are surveyed with monolithic
Examination mode, carries out electric leakage current test to every PCB soft board in the P groups PCB soft boards, determines whether the P groups PCB soft boards lead to
Electric leakage current test is crossed, P is the integer less than N and more than 0.
Preferably, the switchboard is provided with multiple switch, and each switch passes through signal relay and the MCU couplings
Close, the quantity of the switch is equal to the M.
Preferably, the LED display board is provided with multiple LED, and each LED is coupled with the MCU.
Preferably, in addition to condition indication circuit, the condition indication circuit include red status light, green state lamp and
Yellow state lamp, the red status light, the green state lamp and the yellow state lamp are coupled with the MCU.
Preferably, in addition to button sensing input circuit, the button sensing input circuit includes reset signal button, opened
Dynamic signal button, emergent stop signal button and sensor signal button, the reset signal button, the enabling signal button, institute
State emergent stop signal button and the sensor signal button is coupled with the MCU.
A kind of PCB soft boards drain current test method and device that the invention described above is provided, by elder generation with full sheet test mode
Electric leakage current test is carried out to the whole M pieces PCB soft boards for needing to test, and then caused when PCB soft board quantity to be tested is more,
It can disposably be tested, without all PCB soft boards are tested one by one, and then improve testing efficiency.When the M pieces
PCB soft boards not by leak electricity current test when, then with multi-disc test mode, to the N group PCB soft boards being divided into by the M pieces PCB soft boards
Carry out electric leakage current test, by be grouped test, can without one by one test on the premise of, further improve testing efficiency and
Accuracy rate.Finally when any one group be grouped in test is not over electric leakage current test, monolithic test mode is carried out, one by one
Electric leakage current test is carried out to every a piece of PCB soft boards in packet, so as to rapidly obtain in every group not by the current test that leaks electricity
PCB soft boards.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the schematic diagram that user terminal provided in an embodiment of the present invention is interacted with server；
A kind of flow chart for PCB soft boards drain current test method that Fig. 2 provides for first embodiment of the invention；
A kind of high-level schematic functional block diagram for PCB soft boards leakage current test device that Fig. 3 provides for second embodiment of the invention；
Fig. 4 is the partial function module diagram in a kind of PCB soft boards leakage current test device shown in Fig. 3.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Therefore,
The detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit the model of claimed invention below
Enclose, but be merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of creative work, belong to the scope of protection of the invention.
As shown in figure 1, being the schematic diagram that server and user terminal that present pre-ferred embodiments are provided are interacted.Institute
State server 100 to be communicatively coupled with one or more user terminals 200 by network, to enter row data communication or interaction.
The server 100 can be the webserver, database server etc..The user terminal 200 can be PC
(personal computer, PC), tablet personal computer, smart mobile phone, personal digital assistant (personal digital
Assistant, PDA) etc..
Referring to Fig. 2, be a kind of flow chart for PCB soft boards drain current test method that first embodiment of the invention is provided,
Methods described is applied to MCU.The idiographic flow shown in Fig. 2 will be described in detail below.
The whole M pieces PCB soft boards for needing to test, with full sheet test mode, are carried out electric leakage current test by step S301, it is determined that
Whether the M pieces PCB soft boards pass through the current test that leaks electricity.
It is described to refer to disposably test all whole M pieces PCB soft boards to be tested with full sheet test mode.Its
In, the M is the integer more than or equal to 2.
The electric leakage current test refers to detect whether whole M pieces PCB soft boards have electric leakage.Judge the M pieces PCB soft boards
Whether can judge whether the leakage current value is less than pre- according to the leakage current value for obtaining M piece PCB soft boards by the current test that leaks electricity
If permissible value.If being less than, the M pieces PCB soft boards are judged by the current test that leaks electricity, conversely, then no.Wherein, permissible value is preset
For the fiducial value pre-set.The selection of the default permissible value can be selected according to specific implementation, here, not making
It is specific to limit.
As a kind of embodiment, with full sheet test mode, the first leakage current value of whole M piece PCB soft boards is obtained；It is determined that
Whether whether first leakage current value is less than the first permissible value, to determine the M pieces PCB soft boards by the current test that leaks electricity.Its
In, the first leakage current value is the leakage current value of whole M piece PCB soft boards, and first permissible value is numerical value set in advance.Work as institute
The first leakage current value is stated less than the first permissible value, the M pieces PCB soft boards are judged by the current test that leaks electricity, conversely, not passing through then.
Step S302, for it is no when, with multi-disc test mode, the N group PCB soft boards being divided into by the M pieces PCB soft boards are entered
Whether row electric leakage current test, determine the M pieces PCB soft boards by the current test that leaks electricity, N is the integer more than or equal to 1, every group of PCB
Soft board includes at least two panels PCB soft boards.
Wherein, it is described for it is no when refer to when the M pieces PCB soft boards not by leak electricity current test when.
It is described to refer to that the PCB soft boards of the selected part quantity from whole M pieces carry out packet survey with multi-disc test mode
Examination, has been tested until by whole M pieces PCB soft boards.Wherein, the partial amt is at least 2, i.e., wrapped in every group PCB soft board
Include at least two panels PCB soft boards.For example, when the M is equal to 40, when N is equal to 5, i.e., 40 PCB soft boards are divided into 5 groups, every group 8
Piece is tested.
As a kind of embodiment, every group of PCB in the N groups PCB soft boards being divided into by the M pieces PCB soft boards is obtained
The leakage current value of soft board, N is the integer more than or equal to 1, and every group of PCB soft board includes at least two panels PCB soft boards；Judge described every
Whether the leakage current value of group PCB soft boards is less than the second permissible value；If the leakage current value of every group of PCB soft board is less than second and allowed
It is worth, it is determined that every group of PCB soft board is marked by the current test that leaks electricity, and by every group of PCB soft board, and record passes through
The group number of electric leakage current test.If the leakage current value of every group of PCB soft board is more than or equal to the second permissible value, it is determined that described every
Every group of PCB soft board is marked not by the current test that leaks electricity for group PCB soft boards, and record does not pass through the current test that leaks electricity
Group number, to determine P group PCB soft boards not by test from the N groups PCB soft boards.Preferably, when detecting the N
Group PCB soft boards in any one group not by leakage testses when, in the group all PCB soft boards carry out monolithic test, i.e., to changing
Every a piece of PCB soft boards in group carry out electric leakage current test, to obtain in the group not by the PCB soft boards of leakage testses.
Wherein, P is the integer less than N and more than 0.The numerical value of second permissible value is less than the first permissible value.Described
The setting of two permissible values can be chosen according to the quantity for the PCB soft boards tested, here, being not especially limited.
Step S303, for it is no when, the P group PCB soft boards not by test are determined from the N groups PCB soft boards, with list
Built-in testing mode, carries out electric leakage current test to every PCB soft board in the P groups PCB soft boards, determines that the P groups PCB soft boards are
It is no by the current test that leaks electricity, P is the integer less than N and more than 0.
Wherein, it is described for it is no when refer to have in the N groups PCB soft boards and at least one set of electric leakage current test occur and do not pass through
When.
It is described to be referred to monolithic test mode to soft not by all PCB in each group in the P group PCB soft boards of test
Plate is individually tested, i.e., carry out electric leakage current test to every a piece of PCB soft boards in each group, so as to obtain out not by electric leakage
The PCB soft boards of current test.
As a kind of embodiment, with monolithic test mode, the every of every PCB soft board in the P groups PCB soft boards is obtained
Piece leakage current value, P is the integer less than N and more than 0；Judge whether the every leakage current value is less than the 3rd permissible value；If so,
The every PCB soft boards are marked, and record the quantity of the PCB soft boards by leakage testses；Based on passing through leakage testses
PCB soft boards quantity, judge the P groups PCB soft boards whether by the current test that leaks electricity.
Wherein, the 3rd permissible value is less than second permissible value, and the setting of the 3rd permissible value can be according to reality
Border is chosen when testing, here, being not especially limited.
Fig. 3 and Fig. 4 are referred to, is a kind of work(for PCB soft boards leakage current test device that second embodiment of the invention is provided
Can module diagram.The PCB soft boards leakage current test device 500 includes MCU (Microcontroller Unit, microcontroller
Device) 510, switchboard 520, LED display board 530, condition indication circuit 540, button sensing circuit 550, upper monitoring serial ports
560th, DEBUG interfaces 580 and power circuit 570.
The MCU510 is electric with the switchboard 520, LED display board 530, condition indication circuit 540, button sensing respectively
Road 550, upper monitoring serial ports 560, DEBUG interfaces 580 and power circuit 570 are coupled.Specifically, the MCU510 passes through IO ends
Mouth is gone here and there with the switchboard 520, LED display board 530, condition indication circuit 540, button sensing circuit 550, upper monitoring respectively
560 and DEBUG of mouth interfaces 580 are coupled.
The MCU510 is realized by I/O port and communicated with the switchboard 520 and the I2C of the LED display board 530.Its
In, per road I2C, communication is according to geocoding at most expansible 64 I/O ports；To increase piezoelectricity respectively to the switchboard 520
Shown with for LED display board 530.
In the present embodiment, the MCU510's can be the serial processors of STM32F103 or MSP430 systems
The processor of row.Here, being not especially limited.
In the present embodiment, the switchboard 520 is used for the switch for controlling M piece PCB soft boards, so that the MCU is with complete
When built-in testing mode carries out leakage testses, all switches on the switchboard are opened and when the MCU is surveyed with multi-disc
When examination mode carries out leakage testses, the partial switch on the switchboard is opened and when the MCU is tested with monolithic
When mode carries out leakage testses, one on the switchboard is opened.
Wherein, the switchboard 520 is provided with multiple switch, each switch by signal relay with it is described
MCU510 is coupled, and the quantity of the switch is equal to the M.As a kind of embodiment, the switchboard 520 can be by multiple
On-off circuit is integrated in what is formed on pcb board.Each on and off switched for controlling a PCB soft board to be tested.
In the present embodiment, the LED display board 530 is used to show testing result.Wherein, in the LED display board 530
Provided with multiple LED, each LED is coupled with the MCU510.As a kind of embodiment, the LED display board 530 can
Formed with being integrated in by multiple LED on pcb board.
In the present embodiment, the quantity of the LED and the switch all with the quantity of the PCB soft boards to be tested one by one
Correspondence.
In the present embodiment, the condition indication circuit 540 includes red status light 541, green state lamp 542 and yellow
Status lamp 543.The red status light 541, the green state lamp 542 and the yellow state lamp 543 with it is described
MCU510 is coupled.Specifically, the red status light 541, the green state lamp 542 and the yellow state lamp 543 with
The I/O port coupling of the MCU510.
In the present embodiment, the red status light 541, the green state lamp 542 and the yellow state lamp 543
Rated voltage can be 12 volts or 24 volts.Here, being not especially limited.Wherein, the red status light 541,
The green state lamp 542 and the yellow state lamp 543 can choose LED light.One such as can be connected on by common anode
Rise, also can be using I2C drivings, or the IO drive connections directly with MCU510.
In the present embodiment, button sensing circuit 550 includes reset signal button 551, enabling signal button 552, jerk
Signal button 553 and sensor signal button 554.The reset signal button 551, enabling signal button 552, emergent stop signal are pressed
Key 553 and sensor signal button 554 are coupled with the MCU510.
Wherein, the reset signal button 551 is coupled with the I/O port of the MCU510.The reset signal button 551
For when machine is in running, because subjective reason needs the mode that machine stops.
The enabling signal button 552 is coupled with the I/O port of the MCU510.The enabling signal button 552 is used to lead to
Cross the enabling signal button 552 and trigger the open signal for running machine.
The emergent stop signal button 553 is coupled with the I/O port of the MCU510.The emergent stop signal button 553 is used for
Emergent stop signal is inputted by the emergent stop signal button 553 when machine stops at once the need for odjective cause causes.
The sensor signal button 554 is coupled with the I/O port of the MCU510.The sensor signal button 554 is used
After enabling signal button 552 is pressed in machine and machine enter running status before send reset signal,
In the present embodiment, institute's rheme monitoring serial ports 560 is used for for MCU510 by using RS232 PORT COMs with real-time
The test process and test result of monitoring and test machine.And it is also used as HMI (human-computer interaction device).
In the present embodiment, the power circuit 570 is coupled with the VCC ports of the MCU510.The power circuit 570
Power supply is provided for Switching Power Supply and does basic filtering voltage regulation ESD (Electro-Static discharge) processing.
In summary, the present invention provides a kind of PCB soft boards drain current test method and device, by elder generation with full sheet test side
Formula carries out electric leakage current test to the whole M pieces PCB soft boards for needing to test, and then causes when PCB soft board quantity to be tested is more
When, it can disposably be tested, without all PCB soft boards are tested one by one, and then improve testing efficiency.When described
M piece PCB soft boards not by leak electricity current test when, then with multi-disc test mode, to the N groups PCB being divided into by the M pieces PCB soft boards
Soft board carries out electric leakage current test, is tested by being grouped, and can further improve testing efficiency on the premise of without testing one by one
And accuracy rate.Finally when any one group be grouped in test is not over electric leakage current test, monolithic test mode is carried out,
Electric leakage current test is carried out to every a piece of PCB soft boards in packet one by one, not surveyed so as to rapidly obtain in every group by leakage current
The PCB soft boards of examination.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can also pass through
Other modes are realized.Device embodiment described above is only schematical, for example, flow chart and block diagram in accompanying drawing
Show according to the device of multiple embodiments of the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.At this point, each square frame in flow chart or block diagram can represent the one of a module, program segment or code
Part a, part for the module, program segment or code is used to realize holding for defined logic function comprising one or more
Row instruction.It should also be noted that in some implementations as replacement, the function of being marked in square frame can also with different from
The order marked in accompanying drawing occurs.For example, two continuous square frames can essentially be performed substantially in parallel, they are sometimes
It can perform in the opposite order, this is depending on involved function.It is also noted that every in block diagram and/or flow chart
The combination of individual square frame and block diagram and/or the square frame in flow chart, can use the special base for performing defined function or action
Realize, or can be realized with the combination of specialized hardware and computer instruction in the system of hardware.
In addition, each functional module in each embodiment of the invention can integrate to form an independent portion
Point or modules individualism, can also two or more modules be integrated to form an independent part.
If the function is realized using in the form of software function module and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are to cause a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each of the invention embodiment methods described.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access
Memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.Need
It is noted that herein, such as first and second or the like relational terms are used merely to an entity or operation
Made a distinction with another entity or operation, and not necessarily require or imply these entities or exist between operating any this
Actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to nonexcludability
Comprising so that process, method, article or equipment including a series of key elements are not only including those key elements, but also wrap
Include other key elements being not expressly set out, or also include for this process, method, article or equipment intrinsic want
Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described
Also there is other identical element in process, method, article or the equipment of element.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, is then not required in subsequent accompanying drawing
It is further defined and explained.
Claims (10)
1. a kind of PCB soft boards drain current test method, applied to MCU, it is characterised in that including：
With full sheet test mode, electric leakage current test is carried out to the whole M pieces PCB soft boards for needing to test, determines that the M pieces PCB is soft
Whether plate passes through the current test that leaks electricity；
For it is no when, with multi-disc test mode, electric leakage current test is carried out to the N group PCB soft boards being divided into by the M pieces PCB soft boards,
The M pieces PCB soft boards are determined whether by the current test that leaks electricity, N is the integer more than or equal to 1, and every group of PCB soft board is included at least
Two panels PCB soft boards；
For it is no when, the P group PCB soft boards not by test are determined from the N groups PCB soft boards, it is right with monolithic test mode
Whether every PCB soft board in the P groups PCB soft boards carries out electric leakage current test, determine the P groups PCB soft boards by leakage current
Test, P is the integer less than N and more than 0.
2. according to the method described in claim 1, it is characterised in that described with full sheet test mode, to the whole M for needing to test
Piece PCB soft boards carry out electric leakage current test, whether determine the M pieces PCB soft boards by the current test that leaks electricity, including：
With full sheet test mode, the first leakage current value of whole M piece PCB soft boards is obtained, M is the integer more than or equal to 2；
Determine whether first leakage current value is less than the first permissible value, to determine the M pieces PCB soft boards whether by leakage current
Test.
3. method according to claim 2, it is characterised in that it is described for it is no when, with multi-disc test mode, to by described
The N group PCB soft boards that M piece PCB soft boards are divided into carry out electric leakage current test, determine whether the M pieces PCB soft boards are surveyed by leakage current
Examination, including：
Obtain the leakage current value of every group of PCB soft board in the N groups PCB soft boards that are divided into by the M pieces PCB soft boards, N for more than
Integer equal to 1, every group of PCB soft board includes at least two panels PCB soft boards；
Judge whether the leakage current value of every group of PCB soft board is less than the second permissible value；
If, it is determined that every group of PCB soft board is marked by the current test that leaks electricity, and by every group of PCB soft board, and remembers
Record the group number by the current test that leaks electricity.
4. method according to claim 3, it is characterised in that the leakage current value of judgement every group of PCB soft board is
No to be less than after the second permissible value, methods described also includes：
If not, it is determined that every group of PCB soft board is marked not by the current test that leaks electricity for every group of PCB soft board, and
Record is not by the group number for the current test that leaks electricity, to determine P group PCB soft boards not by test, P from the N groups PCB soft boards
For the integer less than N and more than 0.
5. method according to claim 4, it is characterised in that described with monolithic test mode, to the P groups PCB soft boards
In every PCB soft board carry out electric leakage current test, whether determine the P groups PCB soft boards by the current test that leaks electricity, P for less than N and
Integer more than 0, including：
With monolithic test mode, obtain every leakage current value of every PCB soft board in the P groups PCB soft boards, P for less than N and
Integer more than 0；
Judge whether the every leakage current value is less than the 3rd permissible value；
If so, the every PCB soft boards are marked, and record the quantity of the PCB soft boards by leakage testses；
Based on the quantity of the PCB soft boards by leakage testses, judge the P groups PCB soft boards whether by the current test that leaks electricity.
6. a kind of PCB soft boards leakage current test device, it is characterised in that including：MCU, switchboard and LED display board, the LED
Display board and the switchboard are coupled with the MCU；
The switchboard is used for the switch for controlling M piece PCB soft boards, so that the MCU is carrying out electric leakage survey with full sheet test mode
During examination, all switches on the switchboard are opened and when the MCU is carrying out leakage testses with multi-disc test mode,
Partial switch on the switchboard is opened and when the MCU is carrying out leakage testses with monolithic test mode, institute
One stated on switchboard is opened；
The LED display board is used to show testing result；
The MCU is used for full sheet test mode, carries out electric leakage current test to the whole M pieces PCB soft boards for needing to test, determines institute
M piece PCB soft boards are stated whether by the current test that leaks electricity；
The MCU be used to being additionally operable to for it is no when, it is soft to the N groups PCB that is divided into by the M pieces PCB soft boards with multi-disc test mode
Plate carries out electric leakage current test, whether determines the M pieces PCB soft boards by the current test that leaks electricity, N is the integer more than or equal to 1, every group
PCB soft boards include at least two panels PCB soft boards；
And the MCU be used for be additionally operable to for it is no when, the P groups PCB not by test is determined from the N groups PCB soft boards
Soft board, with monolithic test mode, carries out electric leakage current test to every PCB soft board in the P groups PCB soft boards, determines the P groups
Whether PCB soft boards are by the current test that leaks electricity, and P is the integer less than N and more than 0.
7. device according to claim 6, it is characterised in that the switchboard is provided with multiple switch, each described to open
Pass is coupled by signal relay with the MCU, and the quantity of the switch is equal to the M.
8. device according to claim 6, it is characterised in that the LED display board is provided with multiple LED, each described
LED is coupled with the MCU.
9. device according to claim 6, it is characterised in that also including condition indication circuit, the condition indication circuit
Including red status light, green state lamp and yellow state lamp, the red status light, the green state lamp and the yellow
Status lamp is coupled with the MCU.
10. device according to claim 6, it is characterised in that also including button sensing input circuit, the button sensing
Input circuit includes reset signal button, enabling signal button, emergent stop signal button and sensor signal button, the reset letter
Number button, the enabling signal button, the emergent stop signal button and the sensor signal button are coupled with the MCU.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710699464.XA CN107329077A (en) | 2017-08-16 | 2017-08-16 | A kind of PCB soft boards drain current test method and device |
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| CN201710699464.XA CN107329077A (en) | 2017-08-16 | 2017-08-16 | A kind of PCB soft boards drain current test method and device |
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| CN107329077A true CN107329077A (en) | 2017-11-07 |
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| CN201710699464.XA Pending CN107329077A (en) | 2017-08-16 | 2017-08-16 | A kind of PCB soft boards drain current test method and device |
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Application publication date: 20171107 |