CN202794426U - Tin connection testing device of plug connector pin - Google Patents
Tin connection testing device of plug connector pin Download PDFInfo
- Publication number
- CN202794426U CN202794426U CN 201220487152 CN201220487152U CN202794426U CN 202794426 U CN202794426 U CN 202794426U CN 201220487152 CN201220487152 CN 201220487152 CN 201220487152 U CN201220487152 U CN 201220487152U CN 202794426 U CN202794426 U CN 202794426U
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- China
- Prior art keywords
- plug connector
- wire
- efferent
- connector pin
- tin
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- Expired - Fee Related
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to the technical field of test devices and particularly relates to a tin connection testing device of a plug connector pin. The tin connection testing device comprises a product carrying plate and a control plate. The product carrying plate is provided with a plurality of testing points corresponding to the plug connector pin. The control plate comprises an input portion, an output portion, a control portion and a power supply. The input portion comprises a plurality of input portion wires connected with the testing points. The output portion comprises a plurality of output portion wires connected with the testing points. The control portion is respectively connected with the input portion wires and the output portion wires, and the power supply is connected with the control portion. A tin connection testing circuit of the plug connector pin and based on a single chip microcomputer is designed to overcome the shortcomings in the prior art and effectively improve tin connection testing coverage rate and effectiveness of a plug connector.
Description
Technical field
The utility model relates to the testing apparatus correlative technology field, particularly a kind of company's tin testing apparatus of plug connector pin.
Background technology
Element on printed circuit board (PCB) (printed circuit board, the PCB) plate is divided into surface mount elements and plug connector (or cry and insert vertical component), and each element and pcb board adopt scolding tin to weld.Yet, occur easily dry joint in the time of welding or connect the problem of welding.Although the so-called dry joint i.e. pin of the upper element in surface is welded on the pcb board by scolding tin, has the problems such as cavity owing to scolding tin is middle, causes the element pin not to be electrically connected with the copper face of pcb board, therefore causes dry joint.And connect weldering, and be between the adjacent pin on the finger element, welded soldering is received together, causes adjacent pin short-circuit conditions to occur.The method of the existing automatically company of detection tin dry joint is automatic on-line test (In Circuit Tester, ICT) and automatic functional testing (Automatic Test Equipment, ATE).The ATE test is the test for product function and discrete component electrical specification, can't cover the connector that has nothing to do with function on the pcb board.Although company's tin situation that ICT test can be tested connector, the drawback that exists is: because the existence of equipment stress, directly descend testing needle can cause the good pad of original welding the risk of tin to occur splitting to the pin of connector.
Company's tin situation test for the product connector in existing the production also has a kind of specialized equipment, and as shown in Figure 1, test philosophy is the corresponding different pilot lamp of connector pin (when the pin short circuit, corresponding pilot lamp can be bright).On the theory, all may there be the risk that connects tin in a pin and its all adjacent pin.For the connector more than two rows, the adjacent pin of a pin might be more than two, because this test philosophy requires testing needle 1, testing needle 3, testing needle N-1 must be connected to common port, so can't cover all adjacent pins of some pins (adjacent pin is more than two).The adjacent situation that in sum, can't cover all pins is weak points of this testing apparatus.
The weak point of comprehensive consideration existing equipment: the 1.ATE Test coverage less than with the irrelevant connector of function; 2.ICT there is the test risk in test; 3. special test equipment can't cover all adjacent situations of pin.
The utility model content
The utility model provides a kind of company's tin testing apparatus of plug connector pin, can't cover the technical matters of pin to solve prior art comprehensively.
The technical scheme that adopts is as follows:
A kind of company's tin testing apparatus of plug connector pin, described equipment comprises: product support plate and control panel, described product support plate is provided with some test points corresponding with the plug connector pin, described control panel comprises input part, efferent, control part and power supply, described input part comprises the input part wire that some and described test point is connected, described efferent comprises the efferent wire that some and described test point is connected, described control part is connected with the efferent wire with the input part wire respectively, and described power supply is connected with control part.
Further, described control part is single-chip microcomputer, and the input/output port of single-chip microcomputer is connected with the efferent wire with the input part wire respectively.
Further, each test point respectively with an input part wire with is connected an efferent wire and is connected.
Further, described efferent also is provided with pull-up resistor, and each efferent wire is connected with control part by pull-up resistor, and described power supply is connected with pull-up resistor.
Further, described equipment also comprises computer, and described control part communicates by serial ports and computer.
The utility model has designed a kind of SCM Based connector and has connected the tin test circuit, can remedy the deficiencies in the prior art, effectively improves coverage rate and validity that connector connects the tin test.
Description of drawings
Fig. 1 is that prior art is for a kind of testing apparatus schematic diagram of company's tin situation of connector.
Fig. 2 is the schematic diagram of the utility model embodiment.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
The utility model compared with prior art has following characteristics:
1. test point and contacting of connector are not subjected to the impact of equipment stress, have satisfied the necessary condition of product dry joint test, can not exist pin to split the risk of tin.
2. the test coverage that connector is connected the tin dry joint can reach 100%.
3. equipment interoperability is strong.Control panel is independent with placement product support plate, only need change support plate during product transformation.
Present embodiment is a kind of company's tin testing apparatus 100 of plug connector pin, comprise: product support plate 1, control panel 2 and PC 3, described product support plate 1 is a pcb board that is used for placement and fixed product, it is provided with some test points corresponding with the plug connector pin 11, the pin of product connector and one by one corresponding contact of the test point 11 that places end face.
Described control panel 2 is used for output and receives signal, and sends judged result to PC 3 by serial communication.Control panel 2 comprises input part 210, efferent 220, single-chip microcomputer 23 and power supply 24, described input part 210 comprises the input part wire 211 that some and described test point 11 is connected, described efferent 220 comprises the efferent wire 221 that some and described test point 11 is connected, wherein, each test point 11 respectively with an input part wire 211 with is connected an efferent wire 221 and is connected, the input/output port of single-chip microcomputer 23 (I/O mouth) then is connected with the efferent wire with input part wire 211 respectively and is connected, efferent 220 also is provided with pull-up resistor 222, each efferent wire 221 is connected with the I/O mouth of single-chip microcomputer by a pull-up resistor 222, pull-up resistor 222 is used for the driving force of control single chip computer output, the pull-up resistor of different resistances need to be set to reduce false failure rate in various degree company's tin dry joint situation.Power supply 24 is connected with each pull-up resistor 212 and single-chip microcomputer 23 respectively, and the active device on the control panel 2 is powered.Single-chip microcomputer 23 is used for loop output signal as the master control processing unit, calculates judged result and carries out real-time interconnected communication with host computer PC by serial communication according to input.
PC 3 oriented manipulation persons, inside is provided with a cover visual software interface, is used for informing situation and the record data of the current test products of operator.
Test philosophy: the mouth of OUT shown in Fig. 2 and IN mouth all are the standard I O mouths of single-chip microcomputer 23.The product connector has several pins that several groups of OUT mouths and IN mouth will be set, and every group of OUT mouth and IN mouth be corresponding unique test point 11 all, and the OUT mouth is connected with test point 11 by efferent wire 221, and the IN mouth passes through input part wire 211 and is connected with test point 11; The product connector has several pins, and single-chip microcomputer 23 will be exported several times signal in the cocycle of OUT mouth, and it is high level that the Signal coding of exporting each time can only make an OUT mouth, and all the other OUT mouths are low level.
The OUT output signal of single-chip microcomputer 23 arrives the test point 11 of product support plate 1 by efferent wire 221, and then pass to corresponding pin, the pin of connector receives behind the signal of single-chip microcomputer OUT mouth again by input part wire 211, gets back to the IN mouth of single-chip microcomputer 23.
Suppose that all pins exist without connecting the tin situation, single-chip microcomputer 23 output signal each time all should be identical with input signal, and this is the foundation of single-chip microcomputer internal processes judged result.Connect tin if certain pin exists, specifying information will be embodied on the input signal coding of certain circulation IN mouth.
For example the OUT-1 mouth sends high level, and then the input part wire 211 of same test point 11 correspondences can be returned to high level the IN-1 mouth of single-chip microcomputer 23.And if existence connects the situation of tin, then the input part wire 211 of other test point 11 correspondences can be returned to high level other IN mouths of single-chip microcomputer 23, then 23 pairs of all IN mouths of single-chip microcomputer carry out cycle signal coding and will occur unusually, and reflect it is that high level appears in which IN mouth by Signal coding.
Single-chip microcomputer 23 sends to PC 3 with the mode of the abnormal conditions in test result and the test process by serial communication, and PC 3 is presented at these information on the software interface, the whole test case of understanding that the operator just can be real-time.The operator simultaneously also can be by the configuration of software interface realization to control panel.
Claims (5)
1. company's tin testing apparatus of a plug connector pin, it is characterized in that, described equipment comprises: product support plate and control panel, described product support plate is provided with some test points corresponding with the plug connector pin, described control panel comprises input part, efferent, control part and power supply, described input part comprises the input part wire that some and described test point is connected, described efferent comprises the efferent wire that some and described test point is connected, described control part is connected with the efferent wire with the input part wire respectively, and described power supply is connected with control part.
2. company's tin testing apparatus of a kind of plug connector pin according to claim 1 is characterized in that, described control part is single-chip microcomputer, and the input/output port of single-chip microcomputer is connected with the efferent wire with the input part wire respectively.
3. company's tin testing apparatus of a kind of plug connector pin according to claim 1 is characterized in that, each test point respectively with an input part wire with is connected an efferent wire and is connected.
4. company's tin testing apparatus of a kind of plug connector pin according to claim 1 is characterized in that described efferent also is provided with pull-up resistor, and each efferent wire is connected with control part by pull-up resistor, and described power supply is connected with pull-up resistor.
5. company's tin testing apparatus of a kind of plug connector pin according to claim 1 is characterized in that described equipment also comprises computer, and described control part communicates by serial ports and computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487152 CN202794426U (en) | 2012-09-24 | 2012-09-24 | Tin connection testing device of plug connector pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487152 CN202794426U (en) | 2012-09-24 | 2012-09-24 | Tin connection testing device of plug connector pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794426U true CN202794426U (en) | 2013-03-13 |
Family
ID=47821668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220487152 Expired - Fee Related CN202794426U (en) | 2012-09-24 | 2012-09-24 | Tin connection testing device of plug connector pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202794426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568341A (en) * | 2019-08-30 | 2019-12-13 | 深圳三基同创电子有限公司 | System for automatically testing welding state of IO (input/output) interface function of PCBA (printed circuit board assembly) mainboard |
-
2012
- 2012-09-24 CN CN 201220487152 patent/CN202794426U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568341A (en) * | 2019-08-30 | 2019-12-13 | 深圳三基同创电子有限公司 | System for automatically testing welding state of IO (input/output) interface function of PCBA (printed circuit board assembly) mainboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20140924 |
|
| EXPY | Termination of patent right or utility model |