CN104122446B - Circuit board test system - Google Patents
Circuit board test system Download PDFInfo
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- CN104122446B CN104122446B CN201310149301.6A CN201310149301A CN104122446B CN 104122446 B CN104122446 B CN 104122446B CN 201310149301 A CN201310149301 A CN 201310149301A CN 104122446 B CN104122446 B CN 104122446B
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Abstract
The invention relates to a circuit board test system used for testing yield of a circuit board. The circuit board test system contains a platform, a circuit detection module, a heating-up box and a detection host. The heating-up box has a box and a heater. The heater is used for heating a circuit board inside the heater box. The detection host contains a processing unit, a display unit and a temperature control device. The processing unit stores a standard impedance value. The temperature control device is used for controlling temperature of hot air flow provided by the heater. The circuit detection module detects an impedance change value of impedance of at least an electric through hole with the change of temperature. The processing unit compares the impedance change value with the standard impedance value so as to judge whether the electric through hole is abnormal, and a comparison result is displayed on a display unit. Thus, test programs of the circuit board can be simplified, and accuracy of the test result also can be improved.
Description
【Technical field】
The present invention relates to a kind of test system, the electrical perforation of particularly a kind of detection whether abnormal circuit board testing system
System.
【Background technology】
Printed circuit board (PCB) (PRINTING CIRCUIT BOARD, PCB) is electronic components common at present, its characteristic
It is, not by external entity electric wire, the circuit designed on circuit board to be passed through by being inserted in the electronic building brick of circuit board
(layout) other electronic building bricks are electrically connected at, in addition to the setting of reduction entity circuit is with save space, printed circuit board (PCB)
And can carry out circuit and patrol before making according to the function to be implemented of species and electronic installation of each electronic building brick in electronic installation
Design and circuit layout are collected, then printed circuit board (PCB) is made according to design result, therefore can be by the surface area of printed circuit board (PCB) full
Minimum is tapered under the functional requirement of sufficient customer demand, to meet the trend that current electronic product volume is miniaturized increasingly.
Additionally, the substantial amounts of production of printed circuit board (PCB) can be made by printing process, so as to reduce cost of manufacture, electricity is more conformed to
The economic benefit of sub- industry.Due to possessing above-mentioned advantage, printed circuit board (PCB) has become not in current electronic correlation industry
The necessary electronic components that can or lack, its application is also extended to the mainboard and various expansion of computer installation and running gear
The computer fittings such as card, adapter, based on These characteristics, and then make the industry demand amount of printed circuit board (PCB) very big.
However, the electrical perforation of part printed circuit board (PCB) occurs normally or cannot have the phenomenon of loose contact often,
And then cause overall printing board failure or part component thus cannot normal operation situation, include electricity the reason for its is possible
Property the perforation metal layer thickness plated not enough or metal level rupture, come off, or be other factors, no matter which kind of reason,
All may make circuit board cannot normal operation, cause the puzzlement of consumer, the after-sale service of manufacturer is also made indirectly and is keeped in repair into
This hurriedly increases.
In order to be prevented effectively from the problem that circuit board breaks down, general printed circuit board (PCB) in process of production, manufactures commercial city
A series of testing procedure must be performed for above-mentioned defect that may be present, to guarantee that product does not have flaw, to ensure
Shipment in the case of product quality, safeguards the prestige of consumer rights and company, while can also efficiently reduce product send what is repaiied
Chance, is greatly reduced after-sale service and the maintenance cost of manufacturer.Even if additionally, circuit board after peddling because of various reasons without
When method normal operation and sending is repaiied, testing staff also has to carry out a series of detection program, the reason for find out failure, to enter
The follow-up process such as row maintenance, replacing, failture evacuation.
However, described in brought forward, the circuit board testing mode that current industry is adopted all has to carry out many testing procedures, with
Just differentiate cause circuit board cannot normal operation the reason for, wherein again particularly complicated with the method for testing of electrical perforation.Current pin
The method of testing of electrical perforation is typically carried out all by the way of manually detecting, its step first lies in circuit board
On electrostatic table, testing staff with two electrical contacts being electrically connected with electrical perforation on avometer one by one measurement circuit plate whether
Normally, judging whether each electrical perforation electrically conducts.Due to various the step of above-mentioned test, cause this method of testing not only spacious
Day is time-consuming, and its accuracy is it is also clear that deficiency, causes testing staff directly to judge according to testing result, to be keeped in repair, more
Change, the subsequent processing steps such as failture evacuation, and must again carry out extra detecting step just can complete, and this measure causes maintenance cost
It is high.
Meanwhile, also effectively feedback testing result and reason to production division, to improve processing procedure, product cannot be increased good
Rate, therefore help still be extremely limited.
Therefore, how effectively to detect whether the electrical perforation on circuit board normally electrically conducts, and improve testing result
Accuracy, the actually very urgent problem to be solved of manufacturer.
【The content of the invention】
In view of the above problems, the invention reside in provide it is a kind of by the electrical perforation of circuit for detecting plate under different temperatures
Change in impedance value, to detect circuit board testing system of the electrical perforation with the presence or absence of defect, so as to solve to commonly use with artificial side
Formula detects manually the mode of the electrical perforation of circuit board, and not only spacious day is time-consuming and the problems such as not enough accuracy.
Therefore, the present invention provides a kind of circuit board testing system, for testing the yield of a circuit board, wherein circuit board tool
There are multiple electrical perforations.Circuit board testing system includes a platform, an electric circuit inspection module, a warming box and a detecting master
Machine, wherein electric circuit inspection module are arranged on platform, and electric circuit inspection module has multiple probes, and when circuit board is arranged at electricity
On the detection module of road, electrical perforation correspondence is contacted with probe.Warming box has a casing and a heater, and casing is arranged at flat
On platform, and electric circuit inspection module is covered, heater is connected to casing, to supply a thermal current, this thermal current is in casing
Heater circuit plate is to an initial detection temperature and a final detection temperature.Detecting host shows single comprising a processing unit, one
Unit and an attemperating unit, processing unit is electrically connected at electric circuit inspection module and display unit, and stores electrical perforation
A normal impedance value, attemperating unit is electrically connected at heater, to the temperature for controlling thermal current, wherein, electric circuit inspection mould
Block detects electrical perforation in an impedance variation value of initial detection temperature to final detection temperature, and processing unit compares impedance variation
Value and normal impedance value, to judge that electrical perforation is whether abnormal, and are presented a comparison result on display unit.
In a preferred embodiment, the heater of aforementioned circuit Board Test System has an air outlet, and casing has one to enter
QI KOU and a gas outlet, air outlet is communicated in air inlet, and thermal current is entered in casing by air inlet, and is discharged by gas outlet
To outside casing.
In a preferred embodiment, aforesaid circuit board testing system also includes an at least fan, is arranged on casing, and
And corresponding to air inlet or gas outlet, fan drives thermal current to flow in casing.
In a preferred embodiment, a pair of fixtures, interval setting are provided with the platform of aforesaid circuit board testing system
In platform surface, and when circuit board is positioned on platform, two fixture clippings are in the relative dual side-edge of circuit board.
In a preferred embodiment, aforesaid circuit board testing system also includes a fixation kit, with a power source
And a supporting member, power source is connected with supporting member, and power source is driven and drives supporting member relative to platform shift reciprocately, is supported
Head part compresses circuit board under test and contacts with electric circuit inspection module.
In a preferred embodiment, the supporting member of aforementioned circuit Board Test System also has multiple locating dowels, circuit board tool
There are multiple location holes, when circuit board is arranged at electric circuit inspection module, locating dowel wears respectively location hole.
In a preferred embodiment, the power source of aforementioned circuit Board Test System is air pump, motor or motor.
Effect of the present invention is, by the thermal current produced by the heater of circuit board testing system of the present invention and intensification
Covering for case, can effectively lift the temperature of circuit board, and distinguish circuit for detecting by multiple probes of electric circuit inspection module
The electrical perforation of plate is heated to the impedance variation value of final detection temperature in initial detection temperature, to the process with detecting host
The built-in normal impedance value of unit is compared, and in order to judge whether each electrical perforation can normally electrically conduct, so detects people
Member can whether there is flaw by each electrical perforation intuitively with succinct mode decision circuitry plate, efficiently reduce survey
The step of examination, and then reduce the cost of test, while can also lift the accuracy of test.
Additionally, by the processing unit of detecting host of the present invention according to each electrical perforation of circuit for detecting plate in starting detection
Temperature is heated to the impedance variation of final detection temperature, allows testing staff no matter to be in production phase or after-sales service stage, all
Directly can be keeped in repair, be changed according to judged result, the subsequent processing steps such as failture evacuation, without carrying out extra detection step
Suddenly, test and the cost for keeping in repair can be so effectively reduced.
What is more, by the judgment mechanism of aforementioned processing unit, manufacturer being capable of effectively feedback testing result and reason
To production division, so that production division improves processing procedure, to increase the product yield of circuit board, contribute to improving product quality and
Goodwill, relatively reduces the following chance that may be broken down, and potential after-sale service and maintenance cost is greatly reduced.
【Description of the drawings】
Fig. 1 is the circuit board that the figure of circuit board testing system the 1st of first embodiment of the invention is first embodiment of the invention
The schematic perspective view of test system.
Fig. 2 is the first of the platform of the first embodiment of the invention schematic perspective view for implementing aspect.
Fig. 3 is the second of the platform of the first embodiment of the invention schematic perspective view for implementing aspect.
Fig. 4 is the component block chart of the circuit board testing system of first embodiment of the invention.
Fig. 5 is the schematic perspective view of the circuit board testing system of first embodiment of the invention.
Fig. 6 is the schematic side view of the circuit board testing system of first embodiment of the invention.
Fig. 7 is the schematic perspective view of the circuit board testing system of second embodiment of the invention.
Fig. 8 is the first of the circuit board testing system of the second embodiment of the invention schematic side view for implementing aspect.
Fig. 9 is the second of the circuit board testing system of the second embodiment of the invention schematic side view for implementing aspect.
Figure 10 is the schematic perspective view of the circuit board testing system of third embodiment of the invention.
Figure 11 is the schematic side view of the circuit board testing system of third embodiment of the invention.
Figure 12 is the use state schematic diagram of the circuit board testing system of third embodiment of the invention.
Figure 13 is the schematic perspective view of the circuit board testing system of fourth embodiment of the invention.
Primary clustering symbol description：
The platform of 10 circuit board testing system 100
The warming box of 1001 fixture 200
The air inlet of 201 casing 2011
The fan of 2012 gas outlet 2013
The air outlet of 202 heater 2021
The probe of 300 electric circuit inspection module 301
The processing unit of 400 detecting host 401
The attemperating unit of 402 display unit 403
The electrical perforation of 50 circuit board 501
The fixation kit of 502 location hole 900
The supporting member of 901 power source 902
903 locating dowel W1 thermal currents
【Specific embodiment】
Feature for the present invention, implementation and effect, hereby coordinate accompanying drawing to make most preferred embodiment detailed description as follows.
Circuit board testing system provided by the present invention includes three kinds of different embodiments, illustrates individually below.
As shown in Figures 1 to 4, first embodiment of the invention provides a kind of circuit board testing system 10, electric for test one
The yield of road plate 50, circuit board 50 described herein includes but is not limited to mainboard, display adapter, network card, adapter etc. no
The circuit board of same type, circuit board 50 has at least one or more electrical perforation 501, and its quantity and position are according to circuit board 50
Species and line configuring demand and have difference, be not limited with each kenel provided by the present invention.
Described in brought forward, the circuit board testing system 10 of the present embodiment includes a platform 100, a warming box 200, a circuit
The detecting host 400 of detection module 300 and.To bearer circuit plate 50, electric circuit inspection module 300 can be set to platform 100
It is placed on platform 100 or is integrated into an entirety with detecting host 400, electric circuit inspection module 300 has multiple probes 301,
In the present embodiment, the quantity of probe 301 and position are quantity and the positions of the electrical perforation 501 of difference corresponding circuits plate 50,
Therefore, when circuit board 50 is arranged in electric circuit inspection module 300, each electrical perforation 501 is that correspondence is contacted with probe 301, so as to
Detect the resistance value of each electrical perforation 501.
It should be noted that the platform 100 of the present embodiment includes two kinds of different enforcement aspects, wherein, such as Fig. 2 institutes
Show, the first platform 100 for implementing aspect is flat, is as described previously by circuit when circuit board 50 is positioned over platform 100
The probe 301 of detection module 300 is contacted with each electrical perforation 501 of circuit board 50, with fixing circuit board 50；Additionally, such as Fig. 3 institutes
Show, the second platform 100 for implementing aspect has a pair of fixtures 1001, the surface of platform 100 is arranged at, to fixing circuit board 50
With respect to dual side-edge, slid in the top offset of platform 100 or from platform 100 with avoiding circuit board 50.Therefore, when circuit board 50
When being positioned over platform 100, except each electrical perforation 501 for passing through circuit board 50 contacts with the probe 301 of electric circuit inspection module 300
Outward, more by the clamping of fixture 1001, to reach the effect of fixing circuit board 50, the set location and fixed form of fixture 1001
Not with being limited that Fig. 3 is provided, this area person can be according to use demand using the platform 100 of arbitrary enforcement aspect and from folder
The different fixed forms and set location of tool 1001, are not limited thereto.
Described in brought forward, the warming box 200 of the present embodiment has a casing 201 and a heater 202, and casing 201 is arranged
On platform 100, casing 201 can cover whole platform 100, or at least cover electric circuit inspection module 300.Heating
Device 202 is connected to casing 201, and it can be but be not limited to hot-air blower, and as shown in fig. 6, heater 202 has an air-out
Mouth 2021, casing 201 has an air inlet 2011 and a gas outlet 2012, and air outlet 2021 is communicated in air inlet 2011.Therefore,
Heater 202 plus thermogenetic thermal current W1 can be entered in casing 201 by air inlet 2011, and are added by thermal convection current mode
Heater circuit plate 50, is then expelled to outside casing 201 by gas outlet 2012 again, to reach good convection effects.It is worth explanation
, the heater 202 of the present embodiment by above-mentioned thermal convection current mode, by circuit board 50 be heated to an initial detection temperature with
And a final detection temperature.
Significantly, since the effect of aforementioned air inlet 2011 is to guide thermal current and be positioned on platform 100
Circuit board 50 contact, and then lift the efficiency of heater circuit plate 50, therefore on the premise of avoiding circuit board 50 from dropping, enter
, not with being limited shown in Fig. 6, this area person can voluntarily change, and here is not repeated for the size of QI KOU 2011, quantity and kenel.
Described in brought forward, detecting host 400 includes a processing unit 401, a display unit 402 and an attemperating unit 403,
Processing unit 401 is electrically connected at electric circuit inspection module 300 and display unit, and stores each electrical perforation of circuit board 50
501 in a normal impedance value and impedance variation value of initial detecting temperature to final detection temperature, processing unit 401 be to
The each electrical perforation 501 of the passback of record electric circuit inspection module 300 becomes in an impedance of initial detection temperature to final detection temperature
Change value, and impedance variation value and normal impedance value are compared, to judge whether electrical perforation 501 is abnormal.Display unit 402 is logical
The control of processing unit 401 is crossed, to the resistance for showing the temperature of heater 202, the temperature of circuit board 50, each electrical perforation 501
The relevant information such as anti-changing value and comparison result.Attemperating unit 403 is electrically connected at heater 202, to control heater 202
Produce the temperature of thermal current.
Therefore, when testing staff is intended to the detection program of the execution circuit plate 50 of aforesaid circuit board testing system 10, inspection
Survey personnel arrange first circuit board 50 on the platform 100 of circuit board testing system 10, its setting the step of as in the previous paragraph, will
The electrical perforation 501 of circuit board 50 contacts with the probe 301 of electric circuit inspection module 300, and here is not repeated its detailed content.
Secondly, electric circuit inspection module 300 optionally advance circuit for detecting plate 50 electrical perforation 501 at room temperature
The resistance value of (as a example by 25 DEG C), so that used as the follow-up control for measuring, then, the temperature control module 403 of detecting host 400 is controlled
Heater 202 produces thermal current and circuit board 50 is heated, and progressively heightens the temperature of thermal current, and based on air pair
The principle of stream, thermal current W1 can be gradually increasing, and be contacted with circuit board 50 by air inlet 2011, with heater circuit plate 50,
The temperature for making circuit board 50 rises to a final detection temperature from initial detecting temperature.Then, thermal current W1 is re-directed towards air outlet
2021 flow and are discharged outside to environment.
Wherein, initial detecting temperature and final detection temperature system are according to the different of the material of circuit board 50 and the demands pair of test
Should adjust and change, illustrate, implement in aspect one, the temperature of thermal current is supply and temperature by heater 202
The regulation of control device 403, is heightened to 260 DEG C by 120 DEG C, therefore, electricity when initial detecting temperature is 120 DEG C for the temperature of thermal current
The temperature of road plate 50, the temperature of circuit board 50 when final detection temperature is 260 DEG C for the temperature of thermal current, yet with part heat
The heat of air-flow can dissipate in conductive process, it is impossible to which completely circuit board 50 is absorbed, therefore either initial detecting temperature
Or final detection temperature can all be slightly below the temperature value of thermal current at that time.Additionally, in order to allow circuit board 50 in the shape being heated evenly
Detected under state, in temperature-rise period, a scheduled time can be stopped in each specified temp, temperature is then progressively heightened again
Degree, such as to enter the regulation of trip temperature per 10 seconds, in the way of heightening 10 DEG C or 20 DEG C in 20 seconds or 60 seconds.
Meanwhile, in above-mentioned heating process, the probe 301 of electric circuit inspection module 300 distinguishes the electrical of circuit for detecting plate 50
Resistance value of the perforation 501 under different temperatures, and and then obtain electrical perforation 501 with the impedance variation value of temperature change, and
Transmit the processing unit 401 of above-mentioned impedance variation value to detecting host 400.
Further below with actual detecting data as an example, table 1 and table 2 be refer to：
Resistance value of the normal electrical perforation of the circuit board of table 1 under different temperatures
Resistance value of the electrical perforation of exception of the circuit board of table 2 under different temperatures
Tables 1 and 2 is to heighten the resistance value for carrying out measured by heating schedule in the way of in the of 20 DEG C per 10 seconds.As shown in Table 1,
The detecting of impedance is carried out for the electrical perforation FBA_D25 of circuit board N670OC-2GD, when room temperature, electrical perforation FBA_D25
Resistance value be 15 Ω.Measurement is proceeded by when the temperature of heater 103 is promoted to 120 DEG C, now the temperature of circuit board 50 is big
About 96 DEG C, that is to say, that initial detecting temperature is 96 DEG C, and Jing is measured, the resistance value of electrical perforation FBA_D25 is 15 Ω, and is worked as
Temperature is constantly promoted to 260 DEG C, that is, during 238 DEG C of final detection temperature, Jing is measured, the resistance value of electrical perforation FBA_D25
Also it is for about 15 Ω to maintain, that is, the impedance factor of normal electrically perforation will not be lifted with temperature and significantly changed, and normally
Electrical perforation be normally maintained at the state of electrically conducting.
On the contrary, in table 2, the detecting of impedance is carried out for the electrical perforation FBB_D09 of circuit board N670OC-2GD, in
During room temperature, the resistance value of electrical perforation FBB_D09 is 15 Ω, when the temperature of heater 202 is promoted to 120 DEG C of amounts of proceeding by
Survey, at that time about 98 DEG C of the temperature of circuit board 50, that is to say, that initial detecting temperature is 98 DEG C, and Jing is measured, electrical perforation FBB_
It is 89 Ω that the resistance value of D09 increases, and so when temperature is constantly lifted, the resistance value of electrical perforation FBB_D09 is also corresponded to and lifted, directly
260 DEG C are promoted to the temperature when heater 202, that is, during 258 DEG C of final detection temperature, Jing is measured, electrical perforation FBB_D09
Resistance value increase be 434 Ω, level off to open circuit state.
After resistance value of the electrical perforation 501 of circuit board 50 under different temperatures is obtained by above-mentioned steps, detecting master
The impedance variation value that the corresponding record electric circuit inspection module 300 of processing unit 401 of machine 400 is detected, additionally, processing unit 401
And impedance variation value and normal impedance value are compared, whether to judge impedance variation value more than standards change value, if wherein impedance becomes
Change value is more than standards change value, represents that electrical perforation 501 is abnormal, that is to say, that if electrically the resistance value of perforation 501 significantly with
Temperature to rise and be significantly increased, then the correspondence of processing unit 401 judges the existing defects of electrical perforation 501, and this defect is because electricity
Property perforation 501 in metal level rupture, cause the volume of metal level as temperature rises and expand, and then slight crack increased, added
It is deep, resistance value abruptly increase therewith will be made naturally；If on the contrary, impedance variation value be not more than or level off to standards change value or
Significantly it is significantly increased not as temperature is raised, then the correspondence of processing unit 401 judges that electrical perforation 21 is normal.
Therefore, by the circuit board testing system 10 of the present embodiment, testing staff must only place circuit board 50 in platform 100
On, circuit board testing system 10 can be according to the control of the attemperating unit 403 of detecting host 400, corresponding heater circuit plate 50, and
Carry out associated impedances measurement and record step.Additionally, the circuit board testing system 10 of the present embodiment can also pass through detecting host 400
The automatic comparison impedance variation value of processing unit 401 not and standards change value, correspondence judges electrical perforation 501 with the presence or absence of scarce
Fall into, and comparison result is shown by display unit 402, therefore testing staff need not be dependent on tested and relied on human brain manually
Row judges and calculates, it is only necessary to which the comparison result presented according to display unit 402 does simple and intuitively judges, therefore significantly carries
Rise the efficiency and accuracy of test.
Additionally, the electrical perforation 501 that processing unit 401 is measured by electric circuit inspection module 300 is under different temperatures
Impedance variation value, compares with standards change value, and when judging that electrical perforation 501 there may be defect, processing unit 401 enters
One step judges the reason for electrical perforation 501 is abnormal according to electrical perforation 501 in the resistance value of different temperatures section, illustrates
It is bright, definite value is usually due to being plated on the coefficient of expansion of metal level of electrical perforation 501, if therefore discovery impedance variation value and standard
Changing value difference when, then it represents that be plated on the metal level of electrical perforation 501 because of uneven thickness, or be have come off,
The phenomenon of fracture, causes impedance variation value at different temperatures to coincide with standards change value, is processed as unit 401 i.e.
Can automatic sorting and decision circuitry plate 50 cannot normal operation the reason for.
Therefore, the circuit board detection system 10 of the present embodiment, not only allows the testing staff being capable of rapidly test circuit plate 50
Whether cause quality bad outer because of the existing defects of electrical perforation 501, also can lead to when electrical 501 existing defects of perforation are judged
Comparing for impedance variation value and standards change value is crossed, the reason for generation defect is found out automatically, follow-up process is taken with profit.
As shown in Figure 7 to 9, the provided circuit board testing system of the enforcement of the present invention second and first embodiment substantially phase
Similar, its difference is that the circuit board testing system 10 that second embodiment of the invention is provided also includes an at least fan 2013,
It is arranged on casing 201, and is optionally arranged at the side of correspondence air inlet 2011 or gas outlet 2012, in this enforcement
The gas outlet 2012 for being covered in casing 201 is corresponded to as an example with fan 2013 in example, but is not limited thereto.Fan
2013 mainly drive the flow rate of thermal current Uniform Flow and control thermal current in casing 201, and then lift steam
The convection effects of stream, to reach the effect of uniform heater circuit plate 50.
It should be noted that the quantity and set location of fan 2013 are to correspond to air inlet as previously mentioned in the present embodiment
2011 or gas outlet 2012, therefore this area person is without departing from the spirit of the present invention, may be selected change fan 2013 quantity,
Set location and specification, to reach the effect for promoting thermal convection current, following inventor is only carried out with two kinds of different enforcement aspects
Illustrate, but be not limited thereto.
As shown in figure 8, in the circuit board testing system 10 that the present embodiment first implements aspect, fan 2013 is to set respectively
Gas outlet 2012 is placed in, and is electrically connected at detecting host 400, therefore when heater 202 produces thermal current W1, by detecing
The rotation that main frame 400 drives fan 2013 is surveyed, thermal current W1 can be promoted to rise, to reach the effect of rapid heating circuit plate 50；
Additionally, as shown in figure 9, in the circuit board testing system 10 that the present embodiment second implements aspect, fan 2013 is to be respectively provided with
In casing 201 adjacent to air inlet 2011 opposite sides, therefore when heater 202 produce thermal current W1 when, by fan 2013
Brush, thermal current W1 can be promoted to concentrate and circulate in around circuit board 50 to circuit board 50, be equally reached acceleration electricity
The effect that road plate 50 heats up.
Therefore, by the setting of fan 2013 in the different circuit board testing systems 10 for implementing aspect of the present embodiment, can
The effect of the heater circuit plate 50 of heater 202 is effectively lifted, is promoted to by initial detecting temperature in order to shorten circuit board 50
The time of final detection temperature, further improve the detection efficiency of circuit board testing system 10.
As shown in Figure 10 to Figure 12, third embodiment of the invention is provided circuit board testing system 10 and first embodiment
Similar, precisely because difference is, the circuit board testing system 10 of the present embodiment also includes a fixation kit 900, dynamic with one
The supporting member 902 of power source 901 and, power source 901 includes but is not limited to air pump, motor or motor etc. with converting electrical energy, heat energy
For the Power Component of kinetic energy, power source 901 is connected with supporting member 902, therefore when power source 901 is activated, power source 901
Supporting member 902 is driven by driving relative to the shift reciprocately of platform 100, meanwhile, supporting member 902 also has multiple locating dowels 903,
Because circuit board 50 has multiple location holes 502, and the locating dowel 903 of supporting member 902 is corresponding to aforesaid location hole 502.
Brought forward, therefore when circuit board 50 is arranged at electric circuit inspection module 300, the locating dowel 903 of supporting member 902 is to compress
On circuit board 50, circuit board 50 is set to contact with electric circuit inspection module 300, and locating dowel 903 wears respectively location hole 502,
With fixing circuit board 50 on platform 100, and make the electrical perforation 501 of circuit board 50 and the probe 301 of electric circuit inspection module 300
It is in close contact, to avoid probe 301 and the loose contact of electrical perforation 501 aforementioned detection program cannot be normally performed.
As shown in figure 13, the circuit board testing system 10 that fourth embodiment of the invention is provided is to combine first three embodiment
Technical characteristic, that is, the circuit board testing system 10 of fourth embodiment of the invention is except the platform 100, warming box of first embodiment
200th, outside electric circuit inspection module 300 and detecting host 400, it is further equipped with the enforcement of fan 2013 and the 3rd of second embodiment
The fixation kit 900 of example.Therefore, the circuit board testing system 10 of the present embodiment is when aforementioned detection is carried out, by fixation kit
900 pushing and pressing, can be such that the electrical perforation of circuit board is in close contact with the probe 301 of electric circuit inspection module 300, be examined with profit
Survey, while forcing to drive, guiding brushing or dispatch direction and flow velocity for thermal current by fan 2013, contribute to lifting circuit board
50 heating and even temperature effect, contribute to shortening the detection time of circuit board, before its detailed effect and content description refer to
Three embodiments, not here repeat.
The circuit board testing system of the invention described above, by the casing of warming box circuit board is covered, and heater is carried
For thermal current in casing, the temperature of circuit board can be effectively lifted；Also, by multiple probes of electric circuit inspection module point
The electrical perforation of other circuit for detecting plate is heated to the change in impedance value value of final detection temperature in initial detection temperature, then by detecing
The processing unit for surveying main frame is compared with built-in normal impedance value, and judges that the state of electrically conducting of each electrical perforation is
It is no normal；Then again by display unit correspondence presentation comparison result, thus, testing staff is without carrying out in a manual manner complexity
Testing process, detecting host can compare and determining program automatically, allow testing staff only need be according to display unit
Existing comparison result, it is possible to which simple and intuitive way learns that each electrical perforation of circuit board whether there is flaw, effectively
The step of reducing test and time, and then reduce the cost of test, while can also lift the accuracy of test result.
Meanwhile, no matter in production phase or after-sales service stage, testing staff all can be keeped in repair according to judged result,
The subsequent processing steps such as replacing, failture evacuation, without being additionally carried out extra detecting step, can so be effectively reduced test
And the cost of maintenance.What is more, by the record and judgment mechanism of aforementioned processing unit, manufacturer being capable of effectively feedback detection
As a result and reason is to production division, so that production division improves processing procedure, to increase the product yield of circuit board, contribute to being lifted and produce
The quality and goodwill of product, relatively reduces the following chance that may be broken down, and potential after-sale service and maintenance is greatly reduced
Cost.
Additionally, in different embodiments of the invention, by fan and or fixation kit collocation, the circuit of the present invention
Board Test System can reach lifting detection efficiency and avoid because loose contact affects the different characteristics such as testing result, this area tool
There is usual those skilled in the art according to actual demand collocation can be selected to use, here is not repeated.
Although embodiments of the invention are provided as described above, be so not limited to the present invention, any to be familiar with correlation technique
Personnel, without departing from the spirit and scope of the present invention, such as according to the shape described in the claims in the present invention, construction, feature and
Quantity is worked as can do a little change, therefore scope of the presently claimed invention must regard this specification appending claims institute circle
The person of determining is defined.
Claims (7)
1. a kind of circuit board testing system, for testing the yield of a circuit board, the circuit board has multiple electrical perforations, institute
State circuit board testing system to include：
One platform；
One electric circuit inspection module, is arranged on the platform, and the electric circuit inspection module has multiple probes, when the circuit board
It is arranged in the electric circuit inspection module, the electrical perforation correspondence is contacted with the probe；
Characterized in that, the circuit board testing system also includes：
One warming box, with a casing and a heater, the casing is arranged on the platform, and covers the circuit
Detection module, the heater is connected to the casing, and to supply a thermal current, the thermal current is heated in the casing
The circuit board is to an initial detection temperature and a final detection temperature；And
One detecting host, comprising a processing unit, a display unit and an attemperating unit, the processing unit is electrically connected at
The electric circuit inspection module and the display unit, and store a normal impedance value of the electrical perforation, the temperature control
Device is electrically connected at the heater, to the temperature for controlling the thermal current；
Wherein, the electric circuit inspection module detects the electrical perforation in the initial detection temperature to the final detection temperature
An impedance variation value, the processing unit compares the impedance variation value and the normal impedance value, with judge it is described electrically
Whether perforation is abnormal, and a comparison result is presented on the display unit.
2. circuit board testing system as claimed in claim 1, it is characterised in that wherein described heater has an air outlet,
The casing has an air inlet and a gas outlet, and the air outlet is communicated in the air inlet, and the thermal current is by described
Air inlet is entered in the casing, and is expelled to outside the casing by the gas outlet.
3. circuit board testing system as claimed in claim 2, it is characterised in that the circuit board testing system is also included at least
One fan, the fan is arranged on the casing, and corresponding to the air inlet or the gas outlet, the fan drives
The thermal current flows in the casing.
4. circuit board testing system as claimed in claim 1, it is characterised in that a pair of fixtures are provided with the platform,
Every being arranged at the platform surface, and when the circuit board is positioned on the platform, it is described to fixture clipping in the electricity
The relative dual side-edge of road plate.
5. circuit board testing system as claimed in claim 1, it is characterised in that the circuit board testing system also includes
Fixation kit, with a power source and a supporting member, the power source is connected with the supporting member, and the power source is driven
And driving the supporting member relative to the platform shift reciprocately, the supporting member compresses the circuit board with the electric circuit inspection
Module contacts.
6. circuit board testing system as claimed in claim 5, it is characterised in that wherein described supporting member also has multiple positioning
Post, the circuit board has multiple location holes, when the circuit board is arranged at the electric circuit inspection module, the locating dowel difference
Wear the location hole.
7. circuit board testing system as claimed in claim 5, it is characterised in that wherein described power source be air pump, motor or
Motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310149301.6A CN104122446B (en) | 2013-04-26 | 2013-04-26 | Circuit board test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310149301.6A CN104122446B (en) | 2013-04-26 | 2013-04-26 | Circuit board test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104122446A CN104122446A (en) | 2014-10-29 |
| CN104122446B true CN104122446B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310149301.6A Active CN104122446B (en) | 2013-04-26 | 2013-04-26 | Circuit board test system |
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| CN (1) | CN104122446B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707138A (en) * | 2016-12-29 | 2017-05-24 | 广东长虹电子有限公司 | Test device applied to circuit board test |
| CN107132470A (en) * | 2017-05-31 | 2017-09-05 | 格科微电子（上海）有限公司 | Suitable for the tool of wafer-level test |
| CN109887454A (en) * | 2019-04-09 | 2019-06-14 | 苏州精濑光电有限公司 | A kind of impedance detection equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007407A1 (en) * | 1995-08-17 | 1997-02-27 | Jae Woo Nam | Probe card having vertical type needles and the method thereof |
| JP2004309441A (en) * | 2003-02-18 | 2004-11-04 | Yamaha Corp | Probe head, its assembling method, and probe card |
| JP2005274303A (en) * | 2004-03-24 | 2005-10-06 | Taiko Denki Co Ltd | Characteristic impedance measuring tool |
| CN201436588U (en) * | 2009-02-06 | 2010-04-07 | 深圳市博敏电子有限公司 | PCB distribution parameter impedance testing cable and matched impedance testing stripe |
| CN202018494U (en) * | 2011-03-18 | 2011-10-26 | 东莞市连威电子有限公司 | Four-wire printed circuit board (PCB) test jig |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200813450A (en) * | 2006-09-05 | 2008-03-16 | Inventec Appliances Corp | PC board inspection device |
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2013
- 2013-04-26 CN CN201310149301.6A patent/CN104122446B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007407A1 (en) * | 1995-08-17 | 1997-02-27 | Jae Woo Nam | Probe card having vertical type needles and the method thereof |
| JP2004309441A (en) * | 2003-02-18 | 2004-11-04 | Yamaha Corp | Probe head, its assembling method, and probe card |
| JP2005274303A (en) * | 2004-03-24 | 2005-10-06 | Taiko Denki Co Ltd | Characteristic impedance measuring tool |
| CN201436588U (en) * | 2009-02-06 | 2010-04-07 | 深圳市博敏电子有限公司 | PCB distribution parameter impedance testing cable and matched impedance testing stripe |
| CN202018494U (en) * | 2011-03-18 | 2011-10-26 | 东莞市连威电子有限公司 | Four-wire printed circuit board (PCB) test jig |
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| Publication number | Publication date |
|---|---|
| CN104122446A (en) | 2014-10-29 |
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