CN108983074A - Circuit board detection method and device - Google Patents
Circuit board detection method and device Download PDFInfo
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- CN108983074A CN108983074A CN201810904554.2A CN201810904554A CN108983074A CN 108983074 A CN108983074 A CN 108983074A CN 201810904554 A CN201810904554 A CN 201810904554A CN 108983074 A CN108983074 A CN 108983074A
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- 238000001514 detection method Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 claims abstract description 44
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- 230000005611 electricity Effects 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000004590 computer program Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
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- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 230000001052 transient effect Effects 0.000 description 4
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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
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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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- Tests Of Electronic Circuits (AREA)
Abstract
The application discloses a detection method and device of a circuit board. The method comprises the following steps: acquiring the waveform of a target signal in the process of carrying out online detection on a circuit board to be detected, wherein the target signal is the signal to be detected output by the circuit board to be detected; comparing the waveform of the target signal with a standard waveform to obtain a comparison result, wherein the standard waveform is the waveform of the signal output by the qualified circuit board, and the type of the signal corresponding to the standard waveform is the same as that of the signal to be detected; and determining the qualification condition of the circuit board to be detected according to the comparison result. Through the method and the device, the problems that only the final result of the signal to be detected can be obtained and the detection result is inaccurate when the circuit board is detected on line in the related technology are solved.
Description
Technical field
This application involves online measuring technique fields, in particular to the detection method and device of a kind of circuit board.
Background technique
When carrying out function and performance detection to circuit board using On-line funchon detection device at present, mainly using traditional
Artificial detection is tested using easily-testing jig, specifically, contacts circuit board, realization pair by the probe of test fixture
The detection of the signals such as voltage, the electric current of echo signal of PCBA board (circuit board) to be detected is judged according to the testing result of signal
The performance of circuit board knows the qualified or not situation of circuit board.But this method is primarily directed to the letter of some particular moment
Number detected, push away circuit board corresponding performance test results, due to the transient state of the voltage, electric current that are difficult to know in circuit
Variation, performance detection error is larger, and is difficult to analyze the stability of circuit, it is difficult to which which kind of reason analyzes signal and is abnormal is
It is caused.
When for carrying out on-line checking to circuit board in the related technology, the final result of signal to be detected can only obtain, examining
The problem of result inaccuracy is surveyed, currently no effective solution has been proposed.
Summary of the invention
The application provides the detection method and device of a kind of circuit board, online to solve in the related technology to carry out circuit board
When detection, the final result of signal to be detected, the problem of testing result inaccuracy can only obtain.
According to the one aspect of the application, a kind of detection method of circuit board is provided.This method comprises: to be detected
During circuit board carries out on-line checking, the waveform of echo signal is acquired, wherein echo signal is circuit board to be detected output
Signal to be detected；The waveform of echo signal is compared with reference waveform, obtains comparison result, wherein reference waveform is
The waveform of the signal of qualified circuit board output, the type of the corresponding signal of reference waveform are identical as the type of signal to be detected；Root
The Qualification of circuit board to be detected is determined according to comparison result.
Further, the waveform of echo signal is compared with reference waveform, obtaining comparison result includes: to believe in target
Number waveform range value average value be less than reference waveform range value when, determine comparison result be echo signal occur it is different
Often；Or, determining that comparison result is mesh when the maximum value of the range value of the waveform of echo signal is less than the range value of reference waveform
Mark signal is abnormal.
Further, according to comparison result determine circuit board to be detected Qualification include: comparison result be target
In the case that signal is abnormal, determine that circuit board to be detected is unqualified.
Further, after the Qualification for determining circuit board to be detected according to comparison result, this method further include: root
The case where being abnormal according to echo signal determines the element being abnormal in circuit board to be detected.
Further, echo signal powers on voltage signal for circuit board to be detected, by the waveform and standard of echo signal
Waveform is compared, obtain comparison result include: circuit board to be detected the corresponding amplitude of waveform for powering on voltage signal with
When difference in standard between the corresponding amplitude of the waveform of piezoelectric voltage is within the scope of preset voltage value, determine that comparison result is to be checked
Slowdown monitoring circuit plate to power on voltage signal normal；In the corresponding amplitude of waveform for powering on voltage signal and standard of circuit board to be detected
When difference between the corresponding amplitude of the waveform of upper piezoelectric voltage is greater than maximum preset voltage value, determine that comparison result is electricity to be detected
Road plate powers on overshoot, wherein maximum preset voltage value is the maximum value in preset voltage value range；In the upper of circuit board to be detected
Difference between the corresponding amplitude of the waveform of piezoelectric voltage signal amplitude corresponding with the waveform of piezoelectric voltage in standard is less than minimum pre-
If when voltage value, determining that comparison result is that circuit board to be detected powers on undershoot, wherein minimum preset voltage value is preset voltage value
Minimum value in range.
Further, determine that the Qualification of circuit board to be detected includes: on circuit board to be detected according to comparison result
In the case that electricity overshoots or powers on undershoot, determine that the power supply of circuit board to be detected is unqualified.
Further, after the Qualification for determining circuit board to be detected according to comparison result, this method further include: stop
It only powers for circuit board to be detected, and circuit board to be detected is reported and submitted the case where powering on overshoot or the case where powering on undershoot to upper
Position machine, wherein the on-line checking of PC control circuit board to be detected.
According to the another aspect of the application, a kind of detection device of circuit board is provided.The device includes: acquisition unit,
For treat detection circuit board carry out on-line checking during, acquire the waveform of echo signal, wherein echo signal be to
The signal to be detected of detection circuit board output；Comparing unit is obtained for the waveform of echo signal to be compared with reference waveform
To comparison result, wherein reference waveform is the waveform of the signal of qualified circuit board output, the type of the corresponding signal of reference waveform
It is identical as the type of signal to be detected；First determination unit, for determining the qualified feelings of circuit board to be detected according to comparison result
Condition.
To achieve the goals above, according to the another aspect of the application, a kind of storage medium is provided, storage medium includes
The program of storage, wherein program executes the detection method of any one of the above circuit board.
To achieve the goals above, according to the another aspect of the application, a kind of processor is provided, processor is for running
Program, wherein program executes the detection method of any one of the above circuit board when running.
By the application, using following steps: during treating detection circuit board progress on-line checking, acquiring target
The waveform of signal, wherein echo signal is the signal to be detected of circuit board to be detected output；By the waveform and standard of echo signal
Waveform is compared, and obtains comparison result, wherein reference waveform is the waveform of the signal of qualified circuit board output, reference waveform
The type of corresponding signal is identical as the type of signal to be detected；The qualified feelings of circuit board to be detected are determined according to comparison result
Condition can only obtain the final result of signal to be detected, detection knot when solving in the related technology to circuit board progress on-line checking
The problem of fruit inaccuracy.By acquiring the waveform of the echo signal of circuit board to be detected, it is compared with reference waveform, Jin Erda
To the transient changing for knowing echo signal, the effect of Detection accuracy is improved.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present application, the schematic reality of the application
Example and its explanation are applied for explaining the application, is not constituted an undue limitation on the present application.In the accompanying drawings:
Fig. 1 is the flow chart according to the detection method of circuit board provided by the embodiments of the present application；And
Fig. 2 is the schematic diagram according to the detection device of circuit board provided by the embodiments of the present application.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application a part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of the application protection
It encloses.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to embodiments herein described herein.In addition, term " includes " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or circuit board those of are not necessarily limited to be clearly listed step or unit, but may include not having
Other step or units being clearly listed or intrinsic for these process, methods, product or circuit board.
According to an embodiment of the present application, a kind of detection method of circuit board is provided.
Fig. 1 is the flow chart according to the detection method of the circuit board of the embodiment of the present application.As shown in Figure 1, this method includes
Following steps:
Step S101 acquires the waveform of echo signal during treating detection circuit board progress on-line checking,
In, echo signal is the signal to be detected of circuit board to be detected output.
For example, circuit board to be detected is connect with online detection instrument, the board of online detection instrument can be to be detected
The detection of circuit board is powered or power-off, and the model of the master chip of the board of online detection instrument can be STM32F105VET6, should
The chip speed of service of model is fast, maximum frequency of operation 72Mhz, is transmitted the echo signal of circuit board to be detected using probe
To the interface of the ADC acquisition chip of the master chip of board, the model of ADC acquisition chip can be AD9220, the acquisition of the model
The acquisition speed of chip is fast, and maximum acquisition speed is 10MSPS, 12Bit, and echo signal can be voice signal, and on-line checking is set
Standby board is after circuit board to be detected is powered, and ADC acquisition chip acquires the sound signal data of circuit board output to be detected, and
It is communicated by serial ports or USB interface with the master chip of board.
The waveform of echo signal is compared with reference waveform, obtains comparison result by step S102, wherein standard wave
Shape is the waveform of the signal of qualified circuit board output, the type and the type phase of signal to be detected of the corresponding signal of reference waveform
Together.
For example, sound signal data is uploaded to host computer, host computer memory by the master chip of the board of online detection instrument
The corresponding waveform of standard voice signal is contained, standard voice signal is qualified circuit board identical with circuit board model to be detected
Voice signal, host computer can with the waveform of the waveform of the voice signal of real time contrast's circuit board to be detected and standard voice signal,
And be shown on the oscillograph of online detection instrument, for manually being checked.
Optionally, in the detection method of circuit board provided by the embodiments of the present application, by the waveform and standard of echo signal
Waveform is compared, and obtaining comparison result includes: to be less than reference waveform in the average value of the range value of the waveform of echo signal
When range value, determine that comparison result is abnormal for echo signal；Or, the maximum value in the range value of the waveform of echo signal is small
When the range value of reference waveform, determine that comparison result is abnormal for echo signal.
For example, acquiring the voice signal of circuit board output to be detected, acquisition time is 3 seconds, collected voice signal pair
The waveform answered is square wave, calculates the averaged amplitude value of collected square wave, and the rectangular range value with standard voice signal carries out
Compare, in the case that the averaged amplitude value of collected square wave is less than the range value of standard square, illustrates being averaged for signal volume
Value is less than the volume of standard voice signal, determines that exception has occurred in voice signal.For another example acquiring circuit board output to be detected
3 seconds voice signals, the corresponding waveform of collected voice signal is square wave, calculates the maximum amplitude value of collected square wave,
It is compared with the rectangular range value of standard voice signal, the maximum amplitude value of collected square wave is less than the width of standard square
In the case where angle value, illustrates that the max volume of signal volume is less than the volume of standard voice signal, determine that voice signal has occurred
It is abnormal.Through this embodiment, the signal volume for only acquiring a time point and the accordingly vocal function of decision circuitry plate are avoided
When, the problem of being easy to happen erroneous judgement.
Step S103 determines the Qualification of circuit board to be detected according to comparison result.
Optionally, it in the detection method of circuit board provided by the embodiments of the present application, is determined according to comparison result to be detected
The Qualification of circuit board includes: to determine circuit board to be detected not in the case where comparison result is that echo signal is abnormal
It is qualified.
For example, voice signal is issued by the buzzer of circuit board to be detected, voice signal is abnormal, and illustrates electricity to be detected
The buzzer circuit of road plate is abnormal, and the voice signal issued is caused not to be able to satisfy the requirement of circuit board, circuit board to be detected
It is unqualified, it is overhauled.
Optionally, to be checked being determined according to comparison result in the detection method of circuit board provided by the embodiments of the present application
After the Qualification of slowdown monitoring circuit plate, this method further include: the case where being abnormal according to echo signal determines slowdown monitoring circuit to be checked
The element being abnormal in plate.
For example, needing triode of the instantaneous large-current in buzzer circuit since buzzer operating current is unbalanced
It is fully on that instantaneous large-current can not be also provided for buzzer in lower-powered situation, thus, in detecting circuit board
The voice signal that buzzer issues is abnormal, and in the lesser situation of volume, primarily determines that triode is the element being abnormal,
To the smaller replacement of triode, or buzzer shunt capacitor is given, to solve the sound that the buzzer of circuit board to be detected issues
The problem of abnormal signal.
Due to power supply performance being affected to other performances of circuit board of circuit board, optionally, implement in the application
In the detection method for the circuit board that example provides, echo signal powers on voltage signal for circuit board to be detected, by echo signal
Waveform is compared with reference waveform, and obtaining comparison result includes: the waveform pair for powering on voltage signal in circuit board to be detected
When difference between the amplitude answered amplitude corresponding with the waveform of piezoelectric voltage in standard is within the scope of preset voltage value, determines and compare
As a result for circuit board to be detected to power on voltage signal normal；It is corresponding in the waveform for powering on voltage signal of circuit board to be detected
When difference between amplitude amplitude corresponding with the waveform of piezoelectric voltage in standard is greater than maximum preset voltage value, comparison result is determined
Overshoot is powered on for circuit board to be detected, wherein maximum preset voltage value is the maximum value in preset voltage value range；To be detected
Difference between the corresponding amplitude of the waveform amplitude corresponding with the waveform of piezoelectric voltage in standard for powering on voltage signal of circuit board
When less than minimum preset voltage value, determine that comparison result is that circuit board to be detected powers on undershoot, wherein minimum preset voltage value is
Minimum value in preset voltage value range.
For example, ADC acquisition chip powers on voltage signal data for collected after being powered for circuit board to be detected
It is transferred to the master chip of board, the master chip of board will power on voltage signal data and be transferred to host computer, while host computer stores
Have a waveform of piezoelectric voltage in standard, host computer analysis powers on the waveform variation of voltage signal, with the waveform of piezoelectric voltage in standard into
Row compares, and due to treating after detection circuit board is powered, powering on voltage value can increase and stablize in a voltage value, if powering on
Voltage value after voltage stabilization is excessively high, then has occurred and power on overshoot phenomenon, if it is too low to power on the voltage value after voltage stabilization, sends out
It has given birth to and has powered on undershoot.
For example, it is 3V that standard, which powers on the corresponding range value of waveform after voltage stabilization, preset voltage value range is positive and negative
Between 0.1V, the corresponding amplitude of waveform after voltage signal is stablized that powers on of circuit board to be detected is 3.05V, powers on electricity with standard
The difference between the corresponding amplitude of waveform after pressure is stable is 0.05V, when within the scope of preset voltage value, circuit board to be detected
It is normal to power on voltage signal；For another example the corresponding amplitude of waveform after voltage signal is stablized that powers on of circuit board to be detected is
3.2V, the difference between the corresponding range value of waveform after powering on voltage stabilization with standard is+0.2V, is greater than maximum preset voltage
Value 0.1V, circuit board to be detected power on overshoot；Circuit board to be detected powers on the corresponding amplitude of waveform after voltage signal is stablized
For 2.8V, the difference between the corresponding range value of waveform after powering on voltage stabilization with standard is -0.2V, is less than minimum default electricity
Pressure value -0.1V, circuit board to be detected power on undershoot.
Optionally, it in the detection method of circuit board provided by the embodiments of the present application, is determined according to comparison result to be detected
The Qualification of circuit board includes: to determine slowdown monitoring circuit to be checked in the case where circuit board to be detected powers on overshoot or powers on undershoot
The power supply of plate is unqualified.
For example, in the case where circuit board to be detected powers on overshoot or powers on undershoot, after illustrating that voltage value is stablized
Voltage value, which is above standard, powers on the range that the error of voltage value allows, and is unable to satisfy the normal work of circuit board, slowdown monitoring circuit to be checked
The power supply of plate is unqualified.
For the power supply performance of preferably detection circuit board, optionally, in the inspection of circuit board provided by the embodiments of the present application
In survey method, after the Qualification for determining circuit board to be detected according to comparison result, this method further include: stop being to be checked
The power supply of slowdown monitoring circuit plate, and circuit board to be detected is reported and submitted the case where powering on overshoot or the case where powering on undershoot to host computer,
In, the on-line checking of PC control circuit board to be detected.
For example, making circuit board work in improper electricity in the case where circuit board to be detected powers on overshoot or powers on undershoot
Pressure, the element being easy in damaged circuit plate stop power supply at this time, and the result after comparison are reported and submitted to host computer, host computer
Storage powers on overshoot or powers on the concrete condition of undershoot, overhauls convenient for the subsequent power module to circuit board.
The detection method of circuit board provided by the embodiments of the present application, by treating detection circuit board progress on-line checking
In the process, the waveform of echo signal is acquired, wherein echo signal is the signal to be detected of circuit board to be detected output；By target
The waveform of signal is compared with reference waveform, obtains comparison result, wherein reference waveform is the signal of qualified circuit board output
Waveform, the type of the corresponding signal of reference waveform is identical as the type of signal to be detected；It is determined according to comparison result to be detected
The Qualification of circuit board can only obtain signal to be detected when solving in the related technology to circuit board progress on-line checking
Final result, the problem of testing result inaccuracy.By acquire the echo signal of circuit board to be detected waveform and with standard wave
Shape is compared, and then has reached the transient changing for knowing echo signal, improves the effect of Detection accuracy.
It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
It is executed in computer system, although also, logical order is shown in flow charts, and it in some cases, can be with not
The sequence being same as herein executes shown or described step.
The embodiment of the present application also provides a kind of detection devices of circuit board, it should be noted that the embodiment of the present application
The detection device of circuit board can be used for executing the detection method that circuit board is used for provided by the embodiment of the present application.Below to this
The detection device for the circuit board that application embodiment provides is introduced.
Fig. 2 is the schematic diagram according to the detection device of the circuit board of the embodiment of the present application.As shown in Fig. 2, the device includes:
Acquisition unit 10, comparing unit 20 and the first determination unit 30.
Specifically, acquisition unit 10, for during treating detection circuit board progress on-line checking, acquisition target to be believed
Number waveform, wherein echo signal be circuit board to be detected output signal to be detected；
Comparing unit 20 obtains comparison result for the waveform of echo signal to be compared with reference waveform, wherein
Reference waveform is the waveform of the signal of qualified circuit board output, the type of the corresponding signal of reference waveform and the class of signal to be detected
Type is identical；
First determination unit 30, for determining the Qualification of circuit board to be detected according to comparison result.
Optionally, in the detection device of circuit board provided by the embodiments of the present application, comparing unit 20 includes: first to compare
Module determines comparison result when the average value of the range value for the waveform in echo signal is less than the range value of reference waveform
It is abnormal for echo signal；The maximum value of second comparison module, the range value for the waveform in echo signal is less than standard
When the range value of waveform, determine that comparison result is abnormal for echo signal.
Optionally, in the detection device of circuit board provided by the embodiments of the present application, the first determination unit 30 includes: first
Determining module, for determining that circuit board to be detected is unqualified in the case where comparison result is that echo signal is abnormal.
Optionally, in the detection device of circuit board provided by the embodiments of the present application, the device further include: second determines list
Member, the feelings for being abnormal according to echo signal after the Qualification for determining circuit board to be detected according to comparison result
Condition determines the element being abnormal in circuit board to be detected.
Optionally, in the detection device of circuit board provided by the embodiments of the present application, echo signal is circuit board to be detected
Power on voltage signal, comparing unit 20 includes: third comparison module, for the voltage signal that powers in circuit board to be detected
When difference between the corresponding amplitude of waveform amplitude corresponding with the waveform of piezoelectric voltage in standard is within the scope of preset voltage value, really
Determine comparison result be circuit board to be detected to power on voltage signal normal；4th comparison module, in circuit board to be detected
The difference powered between the corresponding amplitude of the waveform amplitude corresponding with the waveform of piezoelectric voltage in standard of voltage signal is greater than maximum
When preset voltage value, determine that comparison result is that circuit board to be detected powers on overshoot, wherein maximum preset voltage value is predeterminated voltage
The maximum value being worth in range；5th comparison module, for the corresponding width of waveform for powering on voltage signal in circuit board to be detected
When being worth the difference between amplitude corresponding with the waveform of piezoelectric voltage in standard less than minimum preset voltage value, determine that comparison result is
Circuit board to be detected powers on undershoot, wherein minimum preset voltage value is the minimum value in preset voltage value range.
Optionally, in the detection device of circuit board provided by the embodiments of the present application, the first determination unit 30 further include: the
Two determining modules, for determining the electricity of circuit board to be detected in the case where circuit board to be detected powers on overshoot or powers on undershoot
Source is unqualified.
Optionally, in the detection device of circuit board provided by the embodiments of the present application, the device further include: control unit,
For after the Qualification for determining circuit board to be detected according to comparison result, stopping powering for circuit board to be detected, and will
Circuit board to be detected is reported and submitted the case where powering on overshoot or the case where powering on undershoot to host computer, wherein PC control is to be checked
The on-line checking of slowdown monitoring circuit plate.
The detection device of circuit board provided by the embodiments of the present application is treating detection circuit board progress by acquisition unit 10
During on-line checking, the waveform of echo signal is acquired, wherein echo signal is the letter to be detected of circuit board to be detected output
Number；The waveform of echo signal is compared by comparing unit 20 with reference waveform, obtains comparison result, wherein reference waveform is
The waveform of the signal of qualified circuit board output, the type of the corresponding signal of reference waveform are identical as the type of signal to be detected；The
One determination unit 30 determines the Qualification of circuit board to be detected according to comparison result, solve in the related technology to circuit board into
When row on-line checking, the final result of signal to be detected can only obtain, the problem of testing result inaccuracy is to be detected by acquiring
The waveform of the echo signal of circuit board is simultaneously compared with reference waveform, and then has reached the transient changing for knowing echo signal,
Improve the effect of Detection accuracy.
The detection device of the circuit board includes processor and memory, above-mentioned acquisition unit 10, comparing unit 20 and
One determination units 30 etc. store in memory as program unit, execute above-mentioned journey stored in memory by processor
Sequence unit realizes corresponding function.
Include kernel in processor, is gone in memory to transfer corresponding program unit by kernel.Kernel can be set one
Or more, by adjusting kernel parameter come solve in the related technology circuit board carry out on-line checking when, can only obtain letter to be detected
Number final result, the problem of testing result inaccuracy.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, if read-only memory (ROM) or flash memory (flash RAM), memory include that at least one is deposited
Store up chip.
The embodiment of the invention provides a kind of storage mediums, are stored thereon with program, real when which is executed by processor
The detection method of the existing circuit board.
The embodiment of the invention provides a kind of processor, the processor is for running program, wherein described program operation
The detection method of circuit board described in Shi Zhihang.
The embodiment of the invention provides a kind of circuit board, circuit board includes processor, memory and stores on a memory
And the program that can be run on a processor, processor execute program when perform the steps of treat detection circuit board carry out exist
During line detects, the waveform of echo signal is acquired, wherein echo signal is the letter to be detected of circuit board to be detected output
Number；The waveform of echo signal is compared with reference waveform, obtains comparison result, wherein reference waveform is qualified circuit board
The type of the waveform of the signal of output, the corresponding signal of reference waveform is identical as the type of signal to be detected；According to comparison result
Determine the Qualification of circuit board to be detected.
Further, the waveform of echo signal is compared with reference waveform, obtaining comparison result includes: to believe in target
Number waveform range value average value be less than reference waveform range value when, determine comparison result be echo signal occur it is different
Often；Or, determining that comparison result is mesh when the maximum value of the range value of the waveform of echo signal is less than the range value of reference waveform
Mark signal is abnormal.
Further, according to comparison result determine circuit board to be detected Qualification include: comparison result be target
In the case that signal is abnormal, determine that circuit board to be detected is unqualified.
Further, after the Qualification for determining circuit board to be detected according to comparison result, this method further include: root
The case where being abnormal according to echo signal determines the element being abnormal in circuit board to be detected.
Further, echo signal powers on voltage signal for circuit board to be detected, by the waveform and standard of echo signal
Waveform is compared, obtain comparison result include: circuit board to be detected the corresponding amplitude of waveform for powering on voltage signal with
When difference in standard between the corresponding amplitude of the waveform of piezoelectric voltage is within the scope of preset voltage value, determine that comparison result is to be checked
Slowdown monitoring circuit plate to power on voltage signal normal；In the corresponding amplitude of waveform for powering on voltage signal and standard of circuit board to be detected
When difference between the corresponding amplitude of the waveform of upper piezoelectric voltage is greater than maximum preset voltage value, determine that comparison result is electricity to be detected
Road plate powers on overshoot, wherein maximum preset voltage value is the maximum value in preset voltage value range；In the upper of circuit board to be detected
Difference between the corresponding amplitude of the waveform of piezoelectric voltage signal amplitude corresponding with the waveform of piezoelectric voltage in standard is less than minimum pre-
If when voltage value, determining that comparison result is that circuit board to be detected powers on undershoot, wherein minimum preset voltage value is preset voltage value
Minimum value in range.
Further, determine that the Qualification of circuit board to be detected includes: on circuit board to be detected according to comparison result
In the case that electricity overshoots or powers on undershoot, determine that the power supply of circuit board to be detected is unqualified.
Further, after the Qualification for determining circuit board to be detected according to comparison result, this method further include: stop
It only powers for circuit board to be detected, and circuit board to be detected is reported and submitted the case where powering on overshoot or the case where powering on undershoot to upper
Position machine, wherein the on-line checking of PC control circuit board to be detected.Circuit board herein can be server, PC, PAD,
Mobile phone etc..
Present invention also provides a kind of computer program products to be adapted for carrying out when executing on data processing circuit plate
The program of initialization there are as below methods step: during treating detection circuit board and carrying out on-line checking, echo signal is acquired
Waveform, wherein echo signal be circuit board to be detected output signal to be detected；By the waveform and reference waveform of echo signal
It is compared, obtains comparison result, wherein reference waveform is the waveform of the signal of qualified circuit board output, and reference waveform is corresponding
Signal type it is identical as the type of signal to be detected；The Qualification of circuit board to be detected is determined according to comparison result.
Further, the waveform of echo signal is compared with reference waveform, obtaining comparison result includes: to believe in target
Number waveform range value average value be less than reference waveform range value when, determine comparison result be echo signal occur it is different
Often；Or, determining that comparison result is mesh when the maximum value of the range value of the waveform of echo signal is less than the range value of reference waveform
Mark signal is abnormal.
Further, according to comparison result determine circuit board to be detected Qualification include: comparison result be target
In the case that signal is abnormal, determine that circuit board to be detected is unqualified.
Further, after the Qualification for determining circuit board to be detected according to comparison result, this method further include: root
The case where being abnormal according to echo signal determines the element being abnormal in circuit board to be detected.
Further, echo signal powers on voltage signal for circuit board to be detected, by the waveform and standard of echo signal
Waveform is compared, obtain comparison result include: circuit board to be detected the corresponding amplitude of waveform for powering on voltage signal with
When difference in standard between the corresponding amplitude of the waveform of piezoelectric voltage is within the scope of preset voltage value, determine that comparison result is to be checked
Slowdown monitoring circuit plate to power on voltage signal normal；In the corresponding amplitude of waveform for powering on voltage signal and standard of circuit board to be detected
When difference between the corresponding amplitude of the waveform of upper piezoelectric voltage is greater than maximum preset voltage value, determine that comparison result is electricity to be detected
Road plate powers on overshoot, wherein maximum preset voltage value is the maximum value in preset voltage value range；In the upper of circuit board to be detected
Difference between the corresponding amplitude of the waveform of piezoelectric voltage signal amplitude corresponding with the waveform of piezoelectric voltage in standard is less than minimum pre-
If when voltage value, determining that comparison result is that circuit board to be detected powers on undershoot, wherein minimum preset voltage value is preset voltage value
Minimum value in range.
Further, determine that the Qualification of circuit board to be detected includes: on circuit board to be detected according to comparison result
In the case that electricity overshoots or powers on undershoot, determine that the power supply of circuit board to be detected is unqualified.
Further, after the Qualification for determining circuit board to be detected according to comparison result, this method further include: stop
It only powers for circuit board to be detected, and circuit board to be detected is reported and submitted the case where powering on overshoot or the case where powering on undershoot to upper
Position machine, wherein the on-line checking of PC control circuit board to be detected.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is reference according to the method for the embodiment of the present application, the stream of circuit board (system) and computer program product
Journey figure and/or block diagram describe.It should be understood that can be realized by computer program instructions each in flowchart and/or the block diagram
The combination of process and/or box in process and/or box and flowchart and/or the block diagram.It can provide these computer journeys
Sequence instructs the processor to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing circuit plates
To generate a machine, so that being generated by the instruction that the processor of computer or other programmable data processing circuit plates executes
For realizing the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram
Device.
These computer program instructions may also be stored in be able to guide computer or other programmable data processing circuit plates with
In the computer-readable memory of ad hoc fashion work, so that instruction stored in the computer readable memory generation includes
The manufacture of command device, the command device are realized in one box of one or more flows of the flowchart and/or block diagram
Or the function of being specified in multiple boxes.
These computer program instructions can also be loaded on computer or other programmable data processing circuit plates, so that
Series of operation steps are executed on computer or other programmable circuit plates to generate computer implemented processing, thus calculating
The instruction executed on machine or other programmable circuit plates is provided for realizing in one or more flows of the flowchart and/or side
The step of function of being specified in block diagram one box or multiple boxes.
In a typical configuration, computing board include one or more processors (CPU), input/output interface,
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage circuits
Plate or any other non-transmission medium can be used for storing the information that can be accessed by computing board.As defined in this article,
Computer-readable medium does not include temporary computer readable media (transitory media), the data-signal and load of such as modulation
Wave.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include, so that the process, method, commodity or the circuit board that include a series of elements not only include those elements, but also
Including other elements that are not explicitly listed, or further include for this process, method, commodity or circuit board it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including element
Process, method, there is also other identical elements in commodity or circuit board.
It will be understood by those skilled in the art that embodiments herein can provide as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The above is only embodiments herein, are not intended to limit this application.To those skilled in the art,
Various changes and changes are possible in this application.It is all within the spirit and principles of the present application made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of the claims of this application.
Claims (10)
1. a kind of detection method of circuit board characterized by comprising
During treating detection circuit board progress on-line checking, the waveform of echo signal is acquired, wherein the echo signal
For the signal to be detected of the circuit board output to be detected；
The waveform of the echo signal is compared with reference waveform, obtains comparison result, wherein the reference waveform is to close
The waveform of the signal of lattice circuit board output, the type and the type phase of the signal to be detected of the corresponding signal of the reference waveform
Together；
The Qualification of the circuit board to be detected is determined according to the comparison result.
2. the method according to claim 1, wherein the waveform of the echo signal is compared with reference waveform
Compared with obtaining comparison result includes:
When the average value of the range value of the waveform of the echo signal is less than the range value of the reference waveform, the ratio is determined
Relatively result is that the echo signal is abnormal；
Or, determining institute when the maximum value of the range value of the waveform of the echo signal is less than the range value of the reference waveform
Stating comparison result is that the echo signal is abnormal.
3. according to the method described in claim 2, it is characterized in that, determining the circuit board to be detected according to the comparison result
Qualification include:
In the case where the comparison result is that the echo signal is abnormal, determine that the circuit board to be detected is unqualified.
4. according to the method described in claim 3, it is characterized in that, determining the slowdown monitoring circuit to be checked according to the comparison result
After the Qualification of plate, the method also includes:
The case where being abnormal according to the echo signal determines the element being abnormal in the circuit board to be detected.
5. the method according to claim 1, wherein the echo signal is powering on for the circuit board to be detected
The waveform of the echo signal is compared by voltage signal with reference waveform, is obtained comparison result and is included:
It is corresponding with the waveform of piezoelectric voltage in standard in the corresponding amplitude of waveform for powering on voltage signal of the circuit board to be detected
Amplitude between difference within the scope of preset voltage value when, determine that the comparison result is that the circuit board to be detected powering on
Voltage signal is normal；
The waveform of piezoelectric voltage in the corresponding amplitude of waveform for powering on voltage signal and the standard of the circuit board to be detected
When difference between corresponding amplitude is greater than maximum preset voltage value, determine that the comparison result is on the circuit board to be detected
Electricity overshoot, wherein the maximum preset voltage value is the maximum value in the preset voltage value range；
The waveform of piezoelectric voltage in the corresponding amplitude of waveform for powering on voltage signal and the standard of the circuit board to be detected
When difference between corresponding amplitude is less than minimum preset voltage value, determine that the comparison result is on the circuit board to be detected
Electric undershoot, wherein the minimum preset voltage value is the minimum value in the preset voltage value range.
6. according to the method described in claim 5, it is characterized in that, determining the circuit board to be detected according to the comparison result
Qualification include:
In the case where the circuit board to be detected powers on overshoot or powers on undershoot, the power supply of the circuit board to be detected is determined not
It is qualified.
7. according to the method described in claim 5, it is characterized in that, determining the slowdown monitoring circuit to be checked according to the comparison result
After the Qualification of plate, the method also includes:
Stop being the circuit board to be detected power supply, and the circuit board to be detected the case where powering on overshoot or is powered on into undershoot
The case where report and submit to host computer, wherein the on-line checking of circuit board to be detected described in the PC control.
8. a kind of detection device of circuit board characterized by comprising
Acquisition unit, for acquiring the waveform of echo signal during treating detection circuit board progress on-line checking,
In, the echo signal is the signal to be detected of the circuit board output to be detected；
Comparing unit obtains comparison result for the waveform of the echo signal to be compared with reference waveform, wherein institute
State the waveform for the signal that reference waveform is qualified circuit board output, the type of the corresponding signal of the reference waveform with it is described to be checked
The type for surveying signal is identical；
First determination unit, for determining the Qualification of the circuit board to be detected according to the comparison result.
9. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein described program right of execution
Benefit require any one of 1 to 7 described in circuit board detection method.
10. a kind of processor, which is characterized in that the processor is for running program, wherein right of execution when described program is run
Benefit require any one of 1 to 7 described in circuit board detection method.
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|---|---|---|---|
| CN201810904554.2A CN108983074A (en) | 2018-08-09 | 2018-08-09 | Circuit board detection method and device |
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|---|---|---|---|
| CN201810904554.2A CN108983074A (en) | 2018-08-09 | 2018-08-09 | Circuit board detection method and device |
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| CN108983074A true CN108983074A (en) | 2018-12-11 |
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| CN201810904554.2A Pending CN108983074A (en) | 2018-08-09 | 2018-08-09 | Circuit board detection method and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456257A (en) * | 2019-09-09 | 2019-11-15 | 合肥悦芯半导体科技有限公司 | Testing system for integrated circuit chip and method |
| CN110514949A (en) * | 2019-09-09 | 2019-11-29 | 珠海格力智能装备有限公司 | Detection method and device for printed circuit board assembly, storage medium and processor |
| CN111999639A (en) * | 2020-08-27 | 2020-11-27 | 皇晶科技股份有限公司 | Analysis method and system capable of simultaneously detecting multiple groups of mixed signals |
| CN112698182A (en) * | 2020-12-10 | 2021-04-23 | Oppo广东移动通信有限公司 | Method, device, equipment, storage medium and system for monitoring power-on time sequence of jig |
| CN113552471A (en) * | 2021-09-17 | 2021-10-26 | 北京星河泰视特科技有限公司 | Method, device, equipment and medium for detecting inductance parallel PN junction circuit |
| CN114089154A (en) * | 2021-10-28 | 2022-02-25 | 西门子电力自动化有限公司 | Test method and test device for relay protection device |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509431A (en) * | 2001-05-15 | 2004-06-30 | Ħ��������˾ | Method and apparatus for controlling current demand in ingegrated circuit |
| CN1959946A (en) * | 2005-11-04 | 2007-05-09 | 松下电器产业株式会社 | Method of designing package for semiconductor device, method of manufacturing the same, and layout design tool |
| CN202229841U (en) * | 2011-09-19 | 2012-05-23 | 基康仪器(北京)有限公司 | Equal-precision frequency measuring device for single-coil vibrating wire instrument |
| CN102523052A (en) * | 2011-12-01 | 2012-06-27 | 无锡中星微电子有限公司 | Testing method and testing device |
| CN102594149A (en) * | 2011-01-07 | 2012-07-18 | 艾沃特有限公司 | Switching power converter having optimal dynamic load response with ultra-low no load power consumption |
| CN103207295A (en) * | 2012-01-16 | 2013-07-17 | 北京普源精电科技有限公司 | Convenient method for detecting abnormal waveform |
| CN103488840A (en) * | 2013-09-27 | 2014-01-01 | 中国东方电气集团有限公司 | System and method for modeling printed circuit board level conducted electromagnetic interference |
| CN104515589A (en) * | 2013-09-27 | 2015-04-15 | 珠海格力电器股份有限公司 | method and system for testing air conditioner electric device |
| CN104914845A (en) * | 2014-03-14 | 2015-09-16 | 深圳市赛格导航科技股份有限公司 | Vehicle body controller fault test method and system based on industrial personal computer |
| CN105203708A (en) * | 2015-09-22 | 2015-12-30 | 伟创力电子技术(苏州)有限公司 | BGA welding detection instrument and method |
| CN105242218A (en) * | 2015-09-24 | 2016-01-13 | 浪潮电子信息产业股份有限公司 | Automatic test system of DC power supply full coverage |
| CN105488998A (en) * | 2015-03-20 | 2016-04-13 | 蒋海兵 | Automatic testing apparatus and method for manual operator |
-
2018
- 2018-08-09 CN CN201810904554.2A patent/CN108983074A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509431A (en) * | 2001-05-15 | 2004-06-30 | Ħ��������˾ | Method and apparatus for controlling current demand in ingegrated circuit |
| CN1959946A (en) * | 2005-11-04 | 2007-05-09 | 松下电器产业株式会社 | Method of designing package for semiconductor device, method of manufacturing the same, and layout design tool |
| CN102594149A (en) * | 2011-01-07 | 2012-07-18 | 艾沃特有限公司 | Switching power converter having optimal dynamic load response with ultra-low no load power consumption |
| CN202229841U (en) * | 2011-09-19 | 2012-05-23 | 基康仪器(北京)有限公司 | Equal-precision frequency measuring device for single-coil vibrating wire instrument |
| CN102523052A (en) * | 2011-12-01 | 2012-06-27 | 无锡中星微电子有限公司 | Testing method and testing device |
| CN103207295A (en) * | 2012-01-16 | 2013-07-17 | 北京普源精电科技有限公司 | Convenient method for detecting abnormal waveform |
| CN103488840A (en) * | 2013-09-27 | 2014-01-01 | 中国东方电气集团有限公司 | System and method for modeling printed circuit board level conducted electromagnetic interference |
| CN104515589A (en) * | 2013-09-27 | 2015-04-15 | 珠海格力电器股份有限公司 | method and system for testing air conditioner electric device |
| CN104914845A (en) * | 2014-03-14 | 2015-09-16 | 深圳市赛格导航科技股份有限公司 | Vehicle body controller fault test method and system based on industrial personal computer |
| CN105488998A (en) * | 2015-03-20 | 2016-04-13 | 蒋海兵 | Automatic testing apparatus and method for manual operator |
| CN105203708A (en) * | 2015-09-22 | 2015-12-30 | 伟创力电子技术(苏州)有限公司 | BGA welding detection instrument and method |
| CN105242218A (en) * | 2015-09-24 | 2016-01-13 | 浪潮电子信息产业股份有限公司 | Automatic test system of DC power supply full coverage |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456257A (en) * | 2019-09-09 | 2019-11-15 | 合肥悦芯半导体科技有限公司 | Testing system for integrated circuit chip and method |
| CN110514949A (en) * | 2019-09-09 | 2019-11-29 | 珠海格力智能装备有限公司 | Detection method and device for printed circuit board assembly, storage medium and processor |
| CN111999639A (en) * | 2020-08-27 | 2020-11-27 | 皇晶科技股份有限公司 | Analysis method and system capable of simultaneously detecting multiple groups of mixed signals |
| CN112698182A (en) * | 2020-12-10 | 2021-04-23 | Oppo广东移动通信有限公司 | Method, device, equipment, storage medium and system for monitoring power-on time sequence of jig |
| CN113552471A (en) * | 2021-09-17 | 2021-10-26 | 北京星河泰视特科技有限公司 | Method, device, equipment and medium for detecting inductance parallel PN junction circuit |
| CN114089154A (en) * | 2021-10-28 | 2022-02-25 | 西门子电力自动化有限公司 | Test method and test device for relay protection device |
| CN114280496A (en) * | 2021-12-09 | 2022-04-05 | 深圳市汇川技术股份有限公司 | Diagnostic device and diagnostic method |
| CN114966377A (en) * | 2022-06-24 | 2022-08-30 | 影石创新科技股份有限公司 | Circuit board detection device, method, computer equipment and storage medium |
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Application publication date: 20181211 |