CN111006588A - Test fixture and detection method for detecting PCBA (printed circuit board assembly) board by using laser sensor - Google Patents
Test fixture and detection method for detecting PCBA (printed circuit board assembly) board by using laser sensor Download PDFInfo
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- CN111006588A CN111006588A CN201911358197.5A CN201911358197A CN111006588A CN 111006588 A CN111006588 A CN 111006588A CN 201911358197 A CN201911358197 A CN 201911358197A CN 111006588 A CN111006588 A CN 111006588A
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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Abstract
The invention relates to a test fixture and a test method for detecting a PCBA board by using a laser sensor, which comprises the following steps: the laser emission control module inputs an emission instruction to the laser emission source and then emits a laser signal to the laser emission source; the laser signal passes through a through hole on a PCBA board to be tested, which is placed on the lower module; after the laser signal receiving device which is arranged in alignment with the laser emission source and is positioned below the laser emission source receives the laser signal, a linear voltage signal is immediately sent to the voltage signal processing module; if the voltage signal processing module receives a voltage signal meeting the preset standard, the PCBA to be tested is judged to be placed in place, and if the voltage signal received by the voltage signal processing module does not meet the preset standard or the voltage signal is not received, the PCBA to be tested is judged not to be placed in place. The invention has simple structure, saves labor, improves the working efficiency, has accurate test result and convenient and simple installation and erection.
Description
Technical Field
The invention relates to the field of automatic testing, in particular to a testing jig and a testing method for detecting a PCBA board by using a laser sensor.
Background
In traditional manufacturing, whether test PCBA board is placed in place is a necessary process, and at this in-process, in order to use manpower sparingly, time or hardware resources, improve efficiency of software testing, the notion of automated test has just been introduced, however whether traditional test PCBA board is put positive test fixture needs to use mechanical type switch in place, and the cost is very high, and it is inconvenient to use, and because traditional equipment structure is complicated, lead to setting up inconveniently, and the installation procedure is very loaded down with trivial details, need a large amount of manual works, it is very inconvenient.
The existing solution has the following disadvantages:
1. the use is inconvenient, and a mechanical on-site switch is needed, so that the use is inconvenient;
2. the volume is large, and valuable space is wasted in test equipment with high requirements on the volume;
3. the installation and erection are inconvenient, the structure is complex, the installation steps are very complicated, and the labor cost is high.
Disclosure of Invention
The invention aims to solve the technical problems of inconvenient installation and erection, complex structure, complex installation steps, large occupied space and high labor cost of the traditional equipment in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a laser emission source and a laser signal receiving device are mounted on a die, and a corresponding voltage signal is output through the received laser signal and whether the voltage signal meets the standard is judged, so that whether the PCBA to be tested is placed in place is judged, the function of testing whether the PCBA is placed right is achieved, the operation is simple, the labor is saved, the working efficiency is improved, and the test result is accurate.
The invention relates to a test fixture for detecting a PCBA board by using a laser sensor, which comprises: the device comprises a test die main body, a laser emission source, a laser signal receiving device, a voltage signal processing module and a laser emission control module;
a test gap is formed in the middle of the test die main body, and the PCBA to be tested is placed in the test gap;
the laser emission source and the laser emission control module are both arranged in the testing die main body and are connected;
the laser signal receiving device and the voltage signal processing module are both arranged in the test die main body and are connected with each other;
the upper end of the test die main body is provided with a first mounting hole, and the laser emission source is mounted in the first mounting hole;
the lower end of the test die main body is provided with a second mounting hole, and the laser signal receiving device is mounted in the second mounting hole.
In a test fixture for detecting a PCBA board using a laser sensor according to the present invention, a test fixture main body includes: go up module and lower module, first mounting hole is seted up on last module.
In the test fixture for detecting the PCBA by using the laser sensor, the second mounting hole is formed in the lower module, and the first mounting hole and the second mounting hole are arranged in an aligned mode.
In the test fixture for detecting the PCBA by using the laser sensor, the test gap is arranged between the upper module and the lower module.
In the test fixture for detecting the PCBA by using the laser sensor, the laser emission control module is arranged in the upper module, and the voltage signal processing module is arranged in the lower module.
In the test fixture for detecting the PCBA by using the laser sensor, the upper surface of the lower module is provided with a PCBA placing area, and the PCBA to be tested is arranged on the PCBA placing area;
a gap is reserved between the PCBA to be tested and the lower surface of the upper module.
In the detection method for detecting the PCBA by using the laser sensor, the method comprises the following steps:
s1, inputting a transmitting instruction to the laser transmitting source by the laser transmitting control module, and transmitting a laser signal by the laser transmitting source;
s2 the laser signal passes through the through hole on the PCBA board to be tested which is placed on the lower module;
s3, after receiving the laser signal, the laser signal receiving device is arranged in alignment with the laser emission source and below the laser emission source, and then sends a linear voltage signal to the voltage signal processing module;
s4, if the voltage signal processing module receives a voltage signal meeting the preset standard, the PCBA to be tested is judged to be put in place, and if the voltage signal received by the voltage signal processing module does not meet the preset standard or the voltage signal is not received, the PCBA to be tested is judged not to be put in place.
In the detection method for detecting the PCBA by using the laser sensor, the laser emission source does not emit a laser signal when the laser emission control module does not emit an emission instruction.
In the detection method for detecting the PCBA by using the laser sensor, the voltage signal processing module outputs the judgment result to the display terminal.
In the detection method for detecting the PCBA by using the laser sensor, when the laser signal emitted by the laser emission source is partially shielded by the PCBA to be detected, the laser signal part penetrates through the through hole in the PCBA to be detected, and the voltage signal sent to the voltage signal processing module by the laser signal receiving device is the voltage signal which does not meet the preset standard.
The invention according to the scheme has the advantages that the test fixture and the test method for detecting the PCBA board by using the laser sensor are provided, the laser emission source and the laser signal receiving device are arranged on the die, the corresponding voltage signal is output through the received laser signal, whether the voltage signal meets the standard is judged, whether the PCBA board to be tested is placed in place is judged, the function of testing whether the PCBA board is placed right is realized, the operation is simple, the labor is saved, the working efficiency is improved, and the test result is accurate.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a structural diagram of a test fixture for detecting PCBA board by using a laser sensor according to the present invention.
In the figure, 1, an upper module; 2. a PCBA board to be tested; 3. a laser emission source; 4. a through hole; 5. a lower module; 6. laser signal receiving arrangement.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. 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, a test fixture for detecting a PCBA board by using a laser sensor includes: the device comprises a test die main body, a laser emission source 3, a laser signal receiving device 6, a voltage signal processing module and a laser emission control module;
the middle part of the testing die main body is provided with a testing gap, and the PCBA board 2 to be tested is placed in the testing gap;
the laser emission source 3 and the laser emission control module are both arranged in the testing die main body, and the laser emission source 3 is connected with the laser emission control module;
the laser signal receiving device 6 and the voltage signal processing module are both arranged in the test die main body, and the laser signal receiving device 6 is connected with the voltage signal processing module;
the upper end of the test die main body is provided with a first mounting hole, and the laser emission source 3 is mounted in the first mounting hole;
the lower end of the test die main body is provided with a second mounting hole, and the laser signal receiving device 6 is mounted in the second mounting hole.
Further, the test mold body includes: go up module 1 and lower module 5, first mounting hole opens and sets up on last module 1.
Further, the laser emission sources 3 are provided one at each of two diagonal positions of the upper module 1.
Further, the second mounting hole is opened on the lower module 5, and the first mounting hole and the second mounting hole are arranged in an alignment manner.
Further, a test gap is provided between the upper module 1 and the lower module 5.
Further, a laser emission control module is built in the upper module 1, and a voltage signal processing module is built in the lower module 5.
Further, the upper surface of the lower module 5 is provided with a PCBA board placing area, and the PCBA board to be tested 2 is arranged on the PCBA board placing area;
a gap is left between the PCBA board to be tested 2 and the lower surface of the upper module 1.
A detection method for detecting PCBA by using a laser sensor comprises the following steps:
s1, inputting a transmitting instruction to the laser emission source 3 by the laser transmitting control module, and transmitting a laser signal by the laser emission source 3;
s2 laser signals pass through the through holes 4 on the PCBA board to be tested 2 placed on the lower module 5;
s3, after receiving the laser signal, the laser signal receiving device 6 is arranged in alignment with the laser emission source 3 and below the laser emission source, and then sends a linear voltage signal to the voltage signal processing module;
s4, if the voltage signal processing module receives a voltage signal meeting the preset standard, it is determined that the PCBA board 2 to be tested is placed in place, and if the voltage signal received by the voltage signal processing module does not meet the preset standard or does not receive the voltage signal, it is determined that the PCBA board 2 to be tested is not placed in place.
Further, when the laser emission control module does not send an emission instruction, the laser emission source 3 does not emit a laser signal.
Further, the voltage signal processing module outputs the judgment result to the display terminal.
Furthermore, when the laser signal emitted by the laser emission source 3 is partially shielded by the PCBA board to be tested 2, the laser signal part passes through the through hole 4 on the PCBA board to be tested 2, and the voltage signal sent by the laser signal receiving device 6 to the voltage signal processing module is a voltage signal which does not meet the preset standard;
when the laser signal emitted by the laser emission source 3 is completely shielded by the PCBA board 2 to be tested, the laser signal receiving device 6 cannot receive the laser signal, and at the moment, no voltage signal is output by the laser signal receiving device 6.
Furthermore, the invention has accurate test result, simple operation and sensor cost saving, provides valuable space for the test equipment with high requirement on volume due to simple structure, and is convenient and simple to install and erect.
The invention provides a test fixture and a test method for detecting a PCBA board by using a laser sensor.
Although the present invention has been described with reference to the above embodiments, the scope of the present invention is not limited thereto, and modifications, substitutions and the like of the above members are intended to fall within the scope of the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides an utilize laser sensor to detect test fixture of PCBA board which characterized in that includes: the device comprises a test die main body, a laser emission source, a laser signal receiving device, a voltage signal processing module and a laser emission control module;
a test gap is formed in the middle of the test die main body, and a PCBA to be tested is placed in the test gap;
the laser emission source and the laser emission control module are both arranged in the test die main body and are connected;
the laser signal receiving device and the voltage signal processing module are both arranged in the test die main body, and the laser signal receiving device is connected with the voltage signal processing module;
the upper end of the test die main body is provided with a first mounting hole, and the laser emission source is mounted in the first mounting hole;
and a second mounting hole is formed in the lower end of the test die main body, and the laser signal receiving device is mounted in the second mounting hole.
2. The test fixture for detecting PCBA with the laser sensor as recited in claim 1, wherein the test fixture comprises: the first mounting hole is formed in the upper module.
3. The test fixture for detecting the PCBA board by using the laser sensor as recited in claim 2, wherein the second mounting hole is opened on the lower module, and the first mounting hole and the second mounting hole are aligned.
4. The test fixture for inspecting PCBA as recited in claim 2, wherein the test gap is disposed between the upper module and the lower module.
5. The test fixture for detecting PCBA with laser sensors as recited in claim 2, wherein said laser emission control module is embedded in said upper module, and said voltage signal processing module is embedded in said lower module.
6. The test fixture for detecting the PCBA by using the laser sensor as recited in claim 4, wherein the upper surface of the lower module is provided with a PCBA board placing area, and the PCBA to be tested is arranged on the PCBA board placing area;
a gap is reserved between the PCBA to be tested and the lower surface of the upper module.
7. A detection method for detecting PCBA by using a laser sensor is characterized by comprising the following steps:
s1, inputting a transmitting instruction to a laser transmitting source by a laser transmitting control module, and transmitting a laser signal by the laser transmitting source;
s2 the laser signal passes through a through hole on a PCBA board to be tested which is placed on the lower module;
s3, after receiving the laser signal, the laser signal receiving device which is arranged in an alignment way with the laser emission source and is positioned below the laser emission source immediately sends a linear voltage signal to the voltage signal processing module;
and S4, if the voltage signal processing module receives a voltage signal meeting the preset standard, the PCBA to be tested is judged to be placed in place, and if the voltage signal received by the voltage signal processing module does not meet the preset standard or the voltage signal is not received, the PCBA to be tested is judged not to be placed in place.
8. The method as claimed in claim 7, wherein the laser emission source does not emit the laser signal when the laser emission control module does not emit the emission command.
9. The method as claimed in claim 7, wherein the voltage signal processing module outputs the determination result to a display terminal.
10. The method as claimed in claim 7, wherein when the laser signal emitted from the laser emitter is partially blocked by the PCBA to be tested, so that the laser signal partially passes through the through hole of the PCBA to be tested, the voltage signal transmitted from the laser signal receiver to the voltage signal processing module is a voltage signal that does not meet a predetermined standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358197.5A CN111006588A (en) | 2019-12-25 | 2019-12-25 | Test fixture and detection method for detecting PCBA (printed circuit board assembly) board by using laser sensor |
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| CN201911358197.5A CN111006588A (en) | 2019-12-25 | 2019-12-25 | Test fixture and detection method for detecting PCBA (printed circuit board assembly) board by using laser sensor |
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| CN111006588A true CN111006588A (en) | 2020-04-14 |
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| CN201911358197.5A Pending CN111006588A (en) | 2019-12-25 | 2019-12-25 | Test fixture and detection method for detecting PCBA (printed circuit board assembly) board by using laser sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111521116A (en) * | 2020-05-25 | 2020-08-11 | 广州冠粤路桥检测有限公司 | Laser projection detection device and detection method for alternate installation |
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Address after: 518000 the first floor, second floor, third floor, fourth floor and fifth floor of 16 workshops in antuoshan high tech Industrial Park, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Mingxin testing equipment Co., Ltd Address before: Baoan District manhole Street Xinsha road Shenzhen city Guangdong province 518000 security supporting mountain High-tech Industrial Park 16 Applicant before: SHENZHEN MASON TEST EQUIPMENT Co.,Ltd. |
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