CN111043952A - Automatic detection method for perpendicularity of PCB interface pin header - Google Patents
Automatic detection method for perpendicularity of PCB interface pin header Download PDFInfo
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- CN111043952A CN111043952A CN201911328340.6A CN201911328340A CN111043952A CN 111043952 A CN111043952 A CN 111043952A CN 201911328340 A CN201911328340 A CN 201911328340A CN 111043952 A CN111043952 A CN 111043952A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
- G01B7/305—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes for testing perpendicularity
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a method for automatically detecting the verticality of a PCB interface pin header, which comprises the following steps: the code scanning device scans the two-dimensional code on the PCB and sends the content of the two-dimensional code to the background control system through the USB serial port; the background control system identifies the two-dimension code information and judges whether the PCB meets the test conditions or not; the background control system sends the test command to the conduction test equipment; the conduction test equipment identifies the pin number to be tested in the test command and executes the test command; and the conduction test equipment uploads the test data to the background control system, and the background control system judges and displays the test result. According to the invention, the conduction test equipment is adopted to test the verticality of the pin header on the PCB, and the background control system assists in automatically completing the test, so that full-automatic detection is realized, manual detection is not needed, the misjudgment rate is greatly reduced, and the cost is low; and the code scanning device can be used for checking the historical test data of the PCB in the server again, so that repeated detection is avoided.
Description
Technical Field
The invention relates to the technical field of PCB pin arrangement perpendicularity detection, in particular to an automatic detection method for PCB interface pin arrangement perpendicularity.
Background
A Printed Circuit Board (PCB), which is also called a Printed Circuit Board (PCB), is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. PCB boards have evolved from single-layer to double-sided, multi-layer, and flexible, and still maintain their respective trends. Due to the continuous development towards high precision, high density and high reliability, the volume is continuously reduced, the cost is reduced, and the performance is improved, so that the printed board still keeps strong vitality in the development engineering of future electronic equipment.
The pin header is a link between a circuit board and other matching equipment and is mainly used for signal connection after multi-module assembly, and the perpendicularity of the pin header cannot be effectively tested on the PCB by using conventional testing equipment, so that the production efficiency of the PCB in the mass production process is greatly influenced; and at present, the traditional perpendicularity test of the pin arrangement on the PCB mainly depends on manual test by using related tools, the pin arrangement is observed by naked eyes and manually recorded, then the pin arrangement is compared with the standard one by one, and then the pin arrangement is manually input and filed.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention provides an automatic detection method for perpendicularity of pins of a PCB interface, and aims to solve the problems that the perpendicularity detection of the pins on the existing PCB needs to depend on manual operation, so that the production efficiency of the PCB is low, the cost is high, and the rate of defective product misjudgment is high.
The technical scheme of the invention is as follows:
a perpendicularity automatic detection method for a PCB interface pin header comprises the following steps:
step a: the code scanning device scans the two-dimensional code on the PCB and sends the content of the two-dimensional code to the background control system through the USB serial port;
step b: the background control system identifies the two-dimension code information and judges whether the PCB meets the test conditions or not;
step c: if the PCB meets the test conditions, the background control system sends a test command to the conduction test equipment;
step d: the conduction test equipment identifies the pin number to be tested in the test command and executes the test command;
step e: and the conduction test equipment uploads the test data to the background control system, and the background control system judges and displays the test result.
The automatic detection method for the verticality of the pin of the PCB interface comprises the following steps of: and the conduction test equipment measures the resistance value between every two pins of the pin header and judges whether a short circuit exists between the two pins.
The automatic detection method for the verticality of the pin of the PCB interface comprises the following steps of: the conduction test equipment measures the voltage of every two pins of the pin header to the ground and judges whether a short circuit exists between the two pins.
The method for automatically detecting the verticality of the pin header of the PCB interface comprises the following steps of: and the background control system stores the two-dimension code content and the test result in a matching manner to the MES server.
The automatic detection method for the verticality of the pin arrangement of the PCB interface comprises the following steps of:
the code scanning device scans the two-dimensional code on the PCB which is tested, and the content of the two-dimensional code is sent to the background control system through the USB serial port;
and the background control system identifies the content of the two-dimensional code, reads historical test data and results from the MES server and displays the historical test data and results.
According to the automatic detection method for the verticality of the pin arrangement of the PCB interface, a background control system sends a test result to an MES server through a local area network.
The method for automatically detecting the verticality of the pin of the PCB interface comprises the following steps of identifying the pin number to be tested in the test command by the conduction test equipment and executing the test command: when the verticality of the interface pin header of the PCB is larger than a set range, the buzzer sounds for a long time, and the status light is normally on.
The automatic detection method for the perpendicularity of the PCB interface pin header comprises the following steps that a PCB is horizontally fixed through a PCB installation jig, and a metal high-precision measuring device is arranged in the jig and used for providing a setting range of the perpendicularity.
According to the automatic detection method for the perpendicularity of the pins of the PCB interface, the conduction test equipment sends a test command to the conduction test equipment in a communication mode of RS-232, SUB or LAN ports.
The invention can realize the following beneficial effects: the PCB interface pin arrangement verticality automatic detection method provided by the invention comprises the steps of firstly adopting a code scanning device to carry out identity verification on a PCB, then identifying two-dimensional code information through a background control system, sending a test command to a conduction test device, testing the pin arrangement verticality on the PCB by virtue of the conduction test device, judging whether the pin arrangement verticality on the PCB is qualified or not by virtue of a background system, realizing full-automatic detection of the pin arrangement verticality, needing no manual detection, greatly reducing the misjudgment rate and having low cost; the PCB is horizontally fixed by utilizing a PCB mounting jig, a high-precision measuring device for providing a verticality measuring range is arranged on the jig, and when the verticality of the pin header on the PCB is unqualified, a sound-light warning can be given to screen a good product by combining a buzzer and a status lamp; in addition, the background control system can store the test result and the two-dimension code content in the server in a matching manner, and after the detection is finished, the code scanning device can be used for checking the historical test data of the PCB again, so that repeated detection is avoided.
Drawings
Fig. 1 is a flowchart of an automatic detection method for perpendicularity of a PCB interface pin header provided by the present invention.
Fig. 2 is a structural block diagram of an automatic detection device for perpendicularity of a PCB interface pin header of the present invention.
Fig. 3 is a schematic structural diagram of an automatic detection device for verticality of a PCB interface pin header of the present invention.
Fig. 4 is a schematic side view of a PCB mounting jig of the automatic detection device for verticality of PCB interface pins of the present invention.
Description of reference numerals: 10. a code scanning device; 20. a PCB mounting jig; 21. a PCB pressing plate; 22. pressing a plate and pulling a valve; 23. a PCB positioning column; 24. a base plate; 25. a support; 26. arranging needles; 30. conducting test equipment; 40. a background control system; 50. a status light; 60. a buzzer.
Detailed Description
The invention provides an automatic detection method for perpendicularity of a PCB interface pin header, which is further detailed in the following in order to make the purpose, technical scheme and effect of the invention clearer and more clear and definite. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the invention provides an automatic verticality detection device for a PCB interface pin header,
a perpendicularity automatic detection method for a PCB interface pin header comprises the following steps:
step 100: the code scanning device scans the two-dimensional code on the PCB and sends the content of the two-dimensional code to the background control system through the USB serial port;
step 200: the background control system identifies the two-dimension code information and judges whether the PCB meets the test conditions or not;
step 300: if the PCB meets the test conditions, the background control system sends the test command to the conduction test equipment through RS-232;
step 400: the conduction test equipment identifies the pin number to be tested in the test command and executes the test command;
step 500: and the conduction test equipment uploads the test data to the background control system, and the background control system judges and displays the test result.
In practical application, as shown in fig. 2 and 3, the device used in combination with the method for automatically detecting the verticality of the pin header of the PCB interface of the present invention comprises a code scanning device 10, a PCB installation jig 20, a conduction testing device 30, a background control system 40, an MES server, a buzzer 60 and a status light 50; sweep a yard device 10, turn on test equipment 30 and MES server and be connected with backstage control system 40 respectively, buzzer 60 and status light 50 are equallyd divide and are connected with PCB installation tool 20 and turn on test equipment 30 respectively, just PCB installation tool 20 still with sweep a yard device 10 and turn on test equipment 30 and be connected.
Specifically, the code scanning device 10 is generally a code scanning gun for scanning a two-dimensional code on a PCB. The PCB mounting jig 20 is used for fixing a PCB, and specifically, as shown in fig. 4, the PCB mounting jig 20 includes a bottom box 24, a bracket 25, a press plate pull valve 22, a PCB press plate 21, a PCB positioning column 23, and a high-precision measuring device; the support 25 is fixed on the bottom box body 24, the press plate pull valve 22 is fixed at the upper end of the PCB positioning column 23, the lower end of the PCB positioning column 23 is connected with the PCB press plate 21, the PCB press plate 21 is connected with the support 25 in a sliding mode, and the PCB press plate 21 is pushed to vertically move up and down along the support 25 through the press plate pull valve 22; and high accuracy measuring device sets up in bottom box 24, high accuracy measuring device is provided with a row of pin sockets, row pin socket sets up the top surface of bottom box 24 and in PCB clamp plate 21 below, and high accuracy measuring device is connected with conduction testing equipment 30.
In practical application, the automatic detection method for the verticality of the pin header of the PCB interface comprises the following steps of firstly putting a PCB into a jig for fixing, pulling down a press plate pull valve 22, moving down a PCB positioning column 23 and a PCB press plate 21, fixing the PCB between the PCB press plate 21 and a bottom box body 24 to enable the PCB to be nearly completely horizontal, and connecting the pin header 26 on the PCB through a pin header socket on the top surface of the bottom box body 24 so as to conduct a test device 30 to test the pin header 26; then, the two-dimensional code on the PCB is scanned by using the code scanning device 10, and the content of the two-dimensional code is transmitted to the background control system 40 through the USB serial port. In practical application, the code scanning gun can send the content of the two-dimension code to the PC end of the background control system 40 through the Internet of things and/or a wireless network, the background control system 40 reads the information of the two-dimension code, such as length and data content, according to the rule of the two-dimension code, judges whether the PCB meets the test condition, after the PCB passes the identity verification, the background control system 40 sends a test starting command to the conduction test equipment 30 in a communication mode of RS-232, SUB or LAN port, the conduction test equipment 30 receives the test command and then identifies the pin number of the PCB to be tested in the command and executes the pin number, and further the conduction test equipment 30 can detect the conduction and the passage of the multi-pin header, specifically, the conduction test equipment 30 measures the resistance value between every two pins of the pin header or the grounding voltage of the two pins, thereby judging whether the two pins have a short circuit. After the test is completed, the conduction test equipment 30 sends the test data to the background control system 40, the background control system 40 judges whether the verticality of the pins on the PCB is qualified, and the test result is displayed on the PC end of the PCB. In practical application, in the automatic detection method for the verticality of the pin header of the PCB interface, the arranged high-precision measuring device is used for testing the physical angle between the pin header 26 and the PCB, the measuring range of the verticality is limited, if the verticality of the pin header is larger than the range set by the high-precision measuring device in the testing process, the buzzer 60 can sound long, and the status lamp 50 is long and bright to prompt that the verticality of the pin header on the PCB exceeds the range, so that a good product is screened. Further, after the testing of the automatic detection device for the verticality of the pin header of the PCB interface is completed, the method comprises the following steps of 600: the background control system 40 stores the test result to the MES server through the lan, and stores the two-dimensional code content on the PCB board to the MES server in a matching manner with the test result. When the code scanning device 10 scans the two-dimensional code on the PCB again, the background control system 40 reads the historical test data from the server and displays the data on the display screen. In practical applications, the background control system 40 may be one of a computer, a smart phone, and a communication tablet.
The PCB interface pin arrangement verticality automatic detection method provided by the invention comprises the steps of firstly adopting a code scanning device to carry out identity verification on a PCB, then identifying two-dimensional code information through a background control system, sending a test command to a conduction test device, testing the pin arrangement verticality on the PCB by virtue of the conduction test device, judging whether the pin arrangement verticality on the PCB is qualified or not by virtue of the background control system, realizing full-automatic detection of the pin arrangement verticality, needing no manual detection, greatly reducing the misjudgment rate and having low cost; the PCB is horizontally fixed by utilizing a PCB mounting jig, a high-precision measuring device for providing a verticality measuring range is arranged on the jig, and when the verticality of the pin header on the PCB is unqualified, a sound-light warning can be given to screen a good product by combining a buzzer and a status lamp; in addition, the background control system can store the test result and the two-dimension code content in the server in a matching manner, and after the detection is finished, the code scanning device can be used for checking the historical test data of the PCB again, so that repeated detection is avoided.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for automatically detecting the verticality of a PCB interface pin header is characterized by comprising the following steps:
step a: the code scanning device scans the two-dimensional code on the PCB and sends the content of the two-dimensional code to the background control system through the USB serial port;
step b: the background control system identifies the two-dimension code information and judges whether the PCB meets the test conditions or not;
step c: if the PCB meets the test conditions, the background control system sends a test command to the conduction test equipment;
step d: the conduction test equipment identifies the pin number to be tested in the test command and executes the test command;
step e: and the conduction test equipment uploads the test data to the background control system, and the background system judges and displays the test result.
2. The method for automatically detecting the verticality of the pin of the PCB interface of claim 1, wherein the step of the conduction test equipment identifying the number of pins to be tested in the test command and executing the test command comprises: and the conduction test equipment measures the resistance value between every two pins of the pin header and judges whether a short circuit exists between the two pins.
3. The method for automatically detecting the verticality of the pin of the PCB interface of claim 1, wherein the step of the conduction test equipment identifying the number of pins to be tested in the test command and executing the test command comprises: the conduction test equipment measures the voltage of every two pins of the pin header to the ground and judges whether a short circuit exists between the two pins.
4. The method for automatically detecting the verticality of the pin header of the PCB interface of claim 1, wherein the conducting test equipment uploads the test data to the background control system, and the step of the background control system determining and displaying the test result further comprises: and the background control system stores the two-dimension code content and the test result in a matching manner to the MES server.
5. The method for automatically detecting the verticality of the pin header of the PCB interface as claimed in claim 4, wherein the step of the background control system storing the two-dimensional code content and the test result in a matching manner to the MES server further comprises the following steps:
the code scanning device scans the two-dimensional code on the PCB which is tested, and the content of the two-dimensional code is sent to the background control system through the USB serial port;
and the background control system identifies the content of the two-dimensional code, reads historical test data and results from the MES server and displays the historical test data and results.
6. The method for automatically detecting the verticality of the pin header of the PCB interface of claim 4, wherein the background control system sends the test result to the MES server through the local area network.
7. The method for automatically detecting the verticality of the pin of the PCB interface of claim 1, wherein the step of the conduction test equipment identifying the number of pins to be tested in the test command and executing the test command further comprises: when the verticality of the interface pin header of the PCB is larger than a set range, the buzzer sounds for a long time, and the status light is normally on.
8. The method according to claim 7, wherein the PCB is horizontally fixed by a PCB mounting jig, and the jig is provided with a metal high-precision measuring device for providing a setting range of verticality.
9. The method as claimed in claim 1, wherein the conduction test apparatus sends the test command to the conduction test apparatus through one of RS-232, SUB or LAN interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911328340.6A CN111043952A (en) | 2019-12-20 | 2019-12-20 | Automatic detection method for perpendicularity of PCB interface pin header |
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| CN201911328340.6A CN111043952A (en) | 2019-12-20 | 2019-12-20 | Automatic detection method for perpendicularity of PCB interface pin header |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115348135A (en) * | 2022-06-27 | 2022-11-15 | 西门子工业自动化产品(成都)有限公司 | Data processing device based on industrial Internet of things gateway |
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Application publication date: 20200421 |