CN107656316A - A kind of test PAD for detecting screw missing locking - Google Patents
A kind of test PAD for detecting screw missing locking Download PDFInfo
- Publication number
- CN107656316A CN107656316A CN201710811623.0A CN201710811623A CN107656316A CN 107656316 A CN107656316 A CN 107656316A CN 201710811623 A CN201710811623 A CN 201710811623A CN 107656316 A CN107656316 A CN 107656316A
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- Prior art keywords
- screw
- pad
- detecting
- missing locking
- test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Logic Circuits (AREA)
Abstract
The invention discloses a kind of test PAD and method of testing for detecting screw missing locking, method is that the screw hole periphery P AD subregions that will be detected are the tests of the first test PAD and second PAD, and low and high level is assigned respectively, the detection circuit of screw missing locking is formed using screw as switch, the conduction status of PAD by stages is detected with programmable chip.Compared to the prior art a kind of test PAD of detection screw missing locking of the present invention, can quickly judge screw missing locking situation, and when screw hole has multiple, not only can decide whether screw missing locking, and can be accurately positioned the position of several screw missing lockings and leakage lock screw；It is simple to operate, accuracy rate is high, substantially increase operating efficiency.
Description
Technical field
The present invention relates to board PAD design fields, specifically a kind of test PAD for detecting screw missing locking.
Background technology
At present, it is fitted in order to which electron plate is clamped on the fixed support of equipment, typically can be designed with spiral shell on electronics board
Silk locks hole；During assembling, by factory line worker using electric screw driver by electron plate clamping lock screw to fixed support.However, by
In factory there is unstability in line operation, it may appear that the phenomenon of the screw missing locking of board.
All it is to pass through assembling operation in producing line assembling process now without the design that lock whether is leaked for screw above board
Guiding book and artificial visual are detected to ensure that screw does not leak lock, certain fault rate be present, as fruit product has been completed
Or reach client and find there is the problems such as loose contact, with queueing problem, it can only be taken by the way that product is all dismantled to check
Effort.
The content of the invention
The technical assignment of the present invention is to be directed to above weak point, there is provided a kind of test PAD for detecting screw missing locking.
The technical solution adopted for the present invention to solve the technical problems is：A kind of test PAD for detecting screw missing locking, including
First PAD units and the 2nd PAD units, the first described PAD units and the configuration of the 2nd PAD units are in board surface, the first PAD
Between screw and board, the first PAD units and the 2nd PAD units are not in contact with each other for unit and the 2nd PAD units.
Further, preferable structure is：
The first described PAD units include the first test PAD and the first line being connected with the first test PAD；
The 2nd described PAD units include the second test PAD and the second circuit being connected with the second test PAD；
Described first line is used as switch by screw with the second circuit and is connected, and forms the detection circuit of screw missing locking.
Further, preferable structure is：
It is screw hole between described the first test PAD and the second test PAD.
Further, preferable structure is：
Described first test PAD's and the second test PAD is shaped as fan-like pattern.
Present invention additionally comprises a kind of method for detecting screw missing locking, method is the screw hole periphery P AD subregions that will be detected
It is that the first test PAD and second test PAD, and assigns low and high level respectively, the inspection of screw missing locking is formed using screw as switch
Slowdown monitoring circuit, the conduction status of PAD by stages is detected with programmable chip.
Further, preferable method is：
Described programmable chip is CPLD or FPGA.
Further, preferable method is：
When described screw hole is multiple, the detection circuit of respective numbers is formed.
Further, preferable method is：
It will be connected between multiple detection circuits, the signal by detecting programmable chip, which inputs, can decide whether screw missing
Lock.
Further, preferable method is：
Will be in parallel between multiple detection circuits, the signal by detecting programmable chip, which inputs, can decide whether screw missing
Lock, and the position of several screw missing lockings and leakage lock screw can be accurately positioned.
Compared to the prior art a kind of test PAD of detection screw missing locking of the present invention, has the beneficial effect that：
1st, by screw hole periphery P AD subregions, and low and high level is assigned respectively, can with CPLD or FPGA etc. using screw as switch
Chip is programmed to detect the conduction status of PAD by stages, i.e. screwed lock and unlocked situation；
2nd, when screw hole has it is multiple when, it can be determined that whether have screw missing locking, and can be accurately positioned several screw missing lockings and leakage lock
The position of screw；
3rd, it is simple to operate, accuracy rate is high, substantially increase operating efficiency.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Accompanying drawing 1 is a kind of PAD of prior art structural representation；
Accompanying drawing 2 is a kind of test PAD structural representations for detecting screw missing locking；
Accompanying drawing 3 is a kind of test PAD structure scheme of installations for detecting screw missing locking；
Accompanying drawing 4 is the single circuit diagram for detecting circuit；
Accompanying drawing 5 is multiple circuit diagrams one for detecting circuits；
Accompanying drawing 6 is multiple circuit diagrams two for detecting circuits；
Wherein：
1st, the PAD of prior art；2nd, the first test PAD；3rd, the second test PAD；4th, screw hole；5th, screw；6th, board；7th, it is fixed
Bottom plate.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The present invention is a kind of test PAD for detecting screw missing locking, and board 6 is fixed on fixed bottom plate 7 by screw 5；It is existing
Some PAD1 are located at the periphery of screw hole 4, the function of no detection screw missing locking.
Embodiment 1：
A kind of test PAD for detecting screw missing locking, including the first PAD units and the 2nd PAD units, the first described PAD units
Being configured with the 2nd PAD units on the surface of board 6, the first PAD units and the 2nd PAD units are between screw 5 and board 6, and the
One PAD units and the 2nd PAD units are not in contact with each other.
The first described PAD units include the first test PAD2 and the first line being connected with the first test PAD2；
The 2nd described PAD units include the second test PAD3 and the second circuit being connected with the second test PAD3；
Described first line is used as switch by screw 5 with the second circuit and is connected, and forms the detection circuit of screw missing locking.
It is screw hole between described the first test PAD2 and the second test PA3.The first described test PAD2 and second
Test PAD3's is shaped as fan-like pattern.
Such as accompanying drawing 4, present invention additionally comprises a kind of method for detecting screw missing locking, method is the screw hole that will be detected 4 weeks
Side PAD subregions are the first test PAD2 and the second test PAD3, and assign low and high level respectively, are formed using screw 5 as switch
The detection circuit of screw missing locking, the conduction status of PAD by stages is detected with programmable chip.When screw 5 is unlocked, switch is beaten
Open（That is PAD2 parts and PAD3 parts do not turn on）, CPLD Detect signals input is high level；After screw 5 is locked, open
Close and close（That is PAD2 parts and PAD3 are partially ON）, CPLD Detect signals input is low level.As long as so detection
CPLD signal input may know that whether screw 5 leaks lock.
Described programmable chip is CPLD or FPGA.
When described screw hole is multiple, the detection circuit of respective numbers is formed.
It will be connected between multiple detection circuits, the signal by detecting programmable chip, which inputs, can decide whether screw
Leakage lock.
All screw hole PAD to be detected are connected, when any one or several screws are unlocked（I.e. any switch is beaten
Open）, circuit 2 is obstructed, and CPLD Detect signals input is high level；After all screw lockings, i.e., all switch closures,
CPLD Detect signals input is low level.So as long as detection CPLD signal input can know whether screw missing
Lock.
Will be in parallel between multiple detection circuits, the signal by detecting programmable chip, which inputs, can decide whether screw
Leakage lock, and the position of several screw missing lockings and leakage lock screw can be accurately positioned.
All screw hole PAD to be detected are in parallel, all Detect signals are detected by CPLD, signal is high level
The unlocked screw of screw hole of pin connection, signal are that the screw hole screw of low level pin connection has been locked, and this method can
For detecting whether there is screw missing locking, and the position of several screw missing lockings and leakage lock screw can be accurately positioned.
By embodiment above, the those skilled in the art can readily realize the present invention.But should
Work as understanding, the present invention is not limited to above-mentioned several embodiments.On the basis of disclosed embodiment, the technology
The technical staff in field can be combined different technical characteristics, so as to realize different technical schemes.
Claims (9)
1. a kind of test PAD for detecting screw missing locking, it is characterised in that described including the first PAD units and the 2nd PAD units
The first PAD units and the 2nd PAD units configure and in board surface, the first PAD units and the 2nd PAD units be located at screw and plate
Between card, the first PAD units and the 2nd PAD units are not in contact with each other.
A kind of 2. test PAD for detecting screw missing locking according to claim 1, it is characterised in that
The first described PAD units include the first test PAD and the first line being connected with the first test PAD；
The 2nd described PAD units include the second test PAD and the second circuit being connected with the second test PAD；
Described first line is used as switch by screw with the second circuit and is connected, and forms the detection circuit of screw missing locking.
A kind of 3. test PAD for detecting screw missing locking according to claim 2, it is characterised in that the first described test
It is screw hole between the tests of PAD and second PAD.
A kind of 4. test PAD for detecting screw missing locking according to claim 2, it is characterised in that the first described test
The tests of PAD and second PAD's is shaped as fan-like pattern.
A kind of 5. method for detecting screw missing locking, it is characterised in that method is that the screw hole periphery P AD subregions that will be detected are
First test PAD and the second test PAD, and low and high level is assigned respectively, the detection of screw missing locking is formed using screw as switch
Circuit, the conduction status of PAD by stages is detected with programmable chip.
A kind of 6. method for detecting screw missing locking according to claim 6, it is characterised in that described programmable chip
For CPLD or FPGA.
7. a kind of method for detecting screw missing locking according to claim 5, it is characterised in that described screw hole is multiple
When, form the detection circuits of respective numbers.
8. a kind of method for detecting screw missing locking according to claim 7, it is characterised in that by between multiple detection circuits
Series connection, the signal by detecting programmable chip, which inputs, can decide whether screw missing locking.
9. a kind of method for detecting screw missing locking according to claim 7, it is characterised in that by between multiple detection circuits
Parallel connection, the signal by detecting programmable chip, which inputs, can decide whether screw missing locking, and can be accurately positioned several screws
The position of leakage lock and leakage lock screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710811623.0A CN107656316A (en) | 2017-09-11 | 2017-09-11 | A kind of test PAD for detecting screw missing locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710811623.0A CN107656316A (en) | 2017-09-11 | 2017-09-11 | A kind of test PAD for detecting screw missing locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107656316A true CN107656316A (en) | 2018-02-02 |
Family
ID=61129244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710811623.0A Pending CN107656316A (en) | 2017-09-11 | 2017-09-11 | A kind of test PAD for detecting screw missing locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107656316A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111025403A (en) * | 2019-12-13 | 2020-04-17 | 苏州浪潮智能科技有限公司 | Method and device for detecting screws in PCB in situ |
Citations (5)
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|---|---|---|---|---|
| US7319638B2 (en) * | 2005-09-06 | 2008-01-15 | Collette Herman D | Hydraulic oscillator for use in a transmitter valve |
| CN204287516U (en) * | 2014-12-05 | 2015-04-22 | 上海斐讯数据通信技术有限公司 | A kind of screw no marking checkout equipment |
| CN104806617A (en) * | 2015-04-29 | 2015-07-29 | 无锡市崇安区科技创业服务中心 | Intelligent inductive screw |
| CN204790017U (en) * | 2015-06-10 | 2015-11-18 | 东莞技研新阳电子有限公司 | Screw quantity detection device |
| CN106413247A (en) * | 2016-11-28 | 2017-02-15 | 上海传英信息技术有限公司 | Novel screw hole structure of intelligent terminal |
-
2017
- 2017-09-11 CN CN201710811623.0A patent/CN107656316A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7319638B2 (en) * | 2005-09-06 | 2008-01-15 | Collette Herman D | Hydraulic oscillator for use in a transmitter valve |
| CN204287516U (en) * | 2014-12-05 | 2015-04-22 | 上海斐讯数据通信技术有限公司 | A kind of screw no marking checkout equipment |
| CN104806617A (en) * | 2015-04-29 | 2015-07-29 | 无锡市崇安区科技创业服务中心 | Intelligent inductive screw |
| CN204790017U (en) * | 2015-06-10 | 2015-11-18 | 东莞技研新阳电子有限公司 | Screw quantity detection device |
| CN106413247A (en) * | 2016-11-28 | 2017-02-15 | 上海传英信息技术有限公司 | Novel screw hole structure of intelligent terminal |
Non-Patent Citations (1)
| Title |
|---|
| 江伟，等: "螺钉自动装配系统的设计与应用", 《粮食与食品工业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111025403A (en) * | 2019-12-13 | 2020-04-17 | 苏州浪潮智能科技有限公司 | Method and device for detecting screws in PCB in situ |
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Application publication date: 20180202 |