WO2023019928A1

WO2023019928A1 - Printed circuit board test method and apparatus

Info

Publication number: WO2023019928A1
Application number: PCT/CN2022/080746
Authority: WO
Inventors: 谢剑; 汪济欢
Original assignee: 中兴通讯股份有限公司
Priority date: 2021-08-17
Filing date: 2022-03-14
Publication date: 2023-02-23
Also published as: CN113391194A

Abstract

A printed circuit board test method and apparatus. The apparatus comprises a bottom plate (601), a supporting mechanism (202), and a controller. The bottom plate (601) is provided with a tray (301) and a first driving member (401). The supporting mechanism (202) is provided with a detection member (501), a correction member (101), and a second driving member (201). The controller is connected to the detection member (501), the correction member (101), the first driving member (401), and the second driving member (201). The method comprises: acquiring first data collected by a correction member (101) and comprising a positional relationship between the correction member (101) and a printed circuit board; acquiring second data comprising a positional relationship between the correction member (101) and a detection member (501); controlling, according to the first data and the second data, a first driving member (401) to drive a tray (301) to move so as to be aligned with the detection member (501); and controlling a second driving member (201) to drive the detection member (501) to test the printed circuit board, so as to obtain an insertion loss value of the printed circuit board.

Description

Printed circuit board testing method and device

Cross References to Related Applications

This application is based on a Chinese patent application with application number 202110944457.8 and a filing date of August 17, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present application relates to the technical field of electronic circuits, in particular to a method and device for testing a printed circuit board.

Background technique

With the current development of 5G (The 5th generation, fifth-generation mobile communication), the rate of high-speed serial signals is gradually increasing. As the serial signal rate increases, so does the requirement for link loss. Among them, the line insertion loss value on the PCB (Printed Circuit Board, printed circuit board) is one of the key factors to evaluate the link loss. The insertion loss value is the insertion loss, which refers to the signal loss generated by the signal transmission device. In the printed circuit board test in the related technical solutions, the printed circuit board is usually tested by manually detecting one by one, which is inefficient.

Contents of the invention

The following is an overview of the topics described in detail in this article. This summary is not intended to limit the scope of the claims.

The main purpose of the embodiments of the present application is to provide a method and device for testing a printed circuit board.

In a first aspect, an embodiment of the present application provides a printed circuit board testing device, the device comprising: a bottom plate, a tray and a first driver are arranged on the bottom plate, the tray is used to place a printed circuit board, The first driver is used to drive the tray to move in the horizontal direction on the bottom plate; the support mechanism is provided with a detection piece, a proofreading piece and a second drive piece, and the detection piece is used for checking The printed circuit board is tested, the proofreading part is used to correct the position of the tray, and the second driving part is used to drive the detection part to move in the vertical direction; the controller is respectively connected with the detection part, The proofreading part, the first driving part and the second driving part are connected, and the controller is used to control the first driving part to drive the tray according to the proofreading part, and control the second driving part Driving the detection part to test the printed circuit board, so that the controller obtains the insertion loss value of the printed circuit board through the detection part.

In the second aspect, the embodiment of the present application provides a printed circuit board testing method, which is applied to a printed circuit board testing device. The printed circuit board testing device includes a base plate, a supporting mechanism and a controller, and the base plate is provided There is a tray and a first driving part, and a detection part, a proofreading part and a second driving part are arranged on the support mechanism, and the controller is respectively connected with the detection part, the proofreading part, the first driving part and the The second driving part is connected; the method includes: acquiring the first data collected by the proofreading part, the first data including the positional relationship between the proofreading part and the printed circuit board; acquiring the second data, The second data includes the positional relationship between the proofreading part and the detection part; according to the first data and the second data, the first driving part is controlled to drive the tray to move to align with the detection part and controlling the second driving part to drive the detection part to test the printed circuit board, so as to obtain the insertion loss value of the printed circuit board through the detection part.

In the third aspect, the embodiment of the present application provides a detection device, including a memory, a processor, a program stored on the memory and operable on the processor, and a program for realizing the detection of the processor and the memory. A data bus for connection and communication between them, and when the program is executed by the processor, the printed circuit board testing method as described in the second aspect above is implemented.

In a fourth aspect, the present application provides a computer-readable storage medium, where one or more programs are stored in the computer-readable storage medium, and the one or more programs can be executed by one or more processors to realize The printed circuit board testing method described in the second aspect above.

Additional features and advantages of the application will be set forth in the description which follows, and, in part, will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

1 is a front view of a printed circuit board testing device provided by an embodiment of the present application;

Fig. 2 is a side view of a printed circuit board testing device provided by an embodiment of the present application;

Fig. 3 is a top view of a printed circuit board testing device provided by an embodiment of the present application;

Fig. 4 is the flowchart of the printed circuit board testing method provided by an embodiment of the present application;

Fig. 5 is another flow chart of the printed circuit board testing method provided by an embodiment of the present application;

Fig. 6 is another flow chart of the printed circuit board testing method provided by an embodiment of the present application;

Fig. 7 is another flow chart of the printed circuit board testing method provided by an embodiment of the present application;

Fig. 8 is another flow chart of the printed circuit board testing method provided by an embodiment of the present application;

FIG. 9 is another flow chart of a printed circuit board testing method provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

It should be noted that although the functional modules are divided in the schematic diagram of the system architecture and the logical order is shown in the flow chart, in some cases, the division of modules in the device or the order in the flow chart may be different. Perform the steps shown or described.

The application provides a printed circuit board testing method and its device. The printed circuit board testing device includes a base plate, a support mechanism and a controller. The base plate is provided with a tray and a first driving part, and the support mechanism is provided with a detection part, For the proofreading part and the second driving part, the controller is respectively connected with the detecting part, the proofreading part, the first driving part and the second driving part. Adjusting the position of the tray according to the first data and the second data by acquiring first data indicating the positional relationship between the proofreading part and the printed circuit board and second data indicating the positional relationship between the proofreading part and the testing part, Therefore, the printed circuit board on the tray is aligned with the detection part, and then the detection part is driven to test the printed circuit board. Therefore, by using the above-mentioned printed circuit board testing device and printed circuit board testing method to detect the printed circuit board, the automatic test of the printed circuit board is realized, and the printed circuit board can still be automatically measured without manual operation. The insertion loss value of the circuit board improves work efficiency and reduces test costs. The automatic detection method eliminates the trouble of manually testing the printed circuit boards one by one, and during the test process, the data can be sent to the controller for processing through the connection line with zero delay, so that the controller can respond in time. According to the data collected by the proofreading part, the controller automatically controls the first drive part, the second drive part, and the detection part to operate, and finally obtains the insertion loss value of the printed circuit board, which embodies artificial intelligence and conforms to artificial intelligence development trend.

The embodiments of the present application will be further described below in conjunction with the accompanying drawings.

As shown in Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is a front view of a printed circuit board testing device provided by an embodiment of the present application, and Fig. 2 is a side view of a printed circuit board testing device provided by an embodiment of the present application Views, FIG. 3 is a top view of a printed circuit board testing device provided by an embodiment of the present application. It can be understood that the printed circuit board testing device includes a bottom plate 601 , a supporting mechanism 202 and a controller. The bottom plate 601 is provided with a tray 301 and a first driver 401 , wherein the tray 301 is used to place the printed circuit board, and the first driver 401 is used to drive the tray 301 to move horizontally on the bottom plate 601 . The support mechanism 202 is provided with a detection part 501, a proofreading part 101 and a second drive part 201, wherein the detection part 501 is used to test the printed circuit board, the proofreading part 101 is used to correct the position of the tray 301, and the second drive part 201 is used to drive the detection part 501 to move in the vertical direction. The controller is respectively connected to the detection part 501, the proofreading part 101, the first driving part 401 and the second driving part 201, and the controller is used to control the first driving part 401 to drive the tray 301 according to the proofreading part 101, and to control the second driving part 201 The detection part 501 is driven to test the printed circuit board, so that the controller obtains the insertion loss value of the printed circuit board through the detection part 501 . The printed circuit board testing device can realize automatic testing of printed circuit boards, avoid the problem of low efficiency caused by manual root-by-root testing, and improve testing efficiency. At the same time, the printed circuit board testing device proposed in this application can test the printed circuit boards 24 hours a day, and one operator can be in charge of multiple printed circuit board testing devices at the same time, which greatly reduces the testing cost.

It can be understood that, firstly, the proofreading part 101 obtains the positional relationship between the proofreading part 101 and the printed circuit board on the tray 301, and the controller controls the first driving part according to the positional relationship between the proofreading part 101 and the printed circuit board on the tray 301. 401 drives the tray 301 to move in the horizontal direction, so that the printed circuit board can move to the bottom of the proofreading member 101 . Since the proofreading piece 101 and the detection piece 501 are installed on the support mechanism 202, the positional relationship between the proofreading piece 101 and the detection piece 501 in the horizontal direction is fixed, and the controller can Control the first driver 401 to drive the tray 301, so that the printed circuit board arranged on the tray 301 moves to the bottom of the detection part 501, so that the printed circuit board is tested by controlling the second drive part 201 to drive the detection part 501, So that the controller obtains the insertion loss value of the printed circuit board through the detection part 501 . The controller can automatically control the first driving part, the second driving part, and the detection parts to operate according to the received data, and finally obtain the insertion loss value of the printed circuit board, which embodies artificial intelligence and conforms to artificial intelligence. development trend.

It should be noted that, taking coordinate axes including X-axis, Y-axis, and Z-axis in three-dimensional space as an example, the movement of the tray 301 in the horizontal direction on the bottom plate 601 mentioned in this application refers to the movement of the tray 301 on the X-axis. and the horizontal plane where the Y axis is located, where the movement along the horizontal direction can be the movement in the direction of the X axis, or the movement in the direction of the Y axis, or the tray 301 can be moved along the X axis on the bottom plate 601 respectively. direction and the superposition result of multiple movements in the Y-axis direction, the tray 301 can also be directly moved from the initial position to the target position in a straight line, as long as the position adjustment of the tray 301 can be realized, this application does not make specific reference to this limited.

It should be noted that, the proofreading part 101 can be used including but not limited to a camera, as long as the position of the tray 301 can be corrected; the testing part 501 can be used including but not limited to a test probe, as long as the performance of the printed circuit board can Parameter detection is sufficient; this application does not specifically limit the selection of materials for the proofreading part 101 and the testing part 501 .

It should be noted that, the first driving member 401 may be a chain motor, as long as it can drive the tray 301 to move in the horizontal direction; the second driving member 201 may be a cylinder, as long as it can drive The detection part 501 only needs to move in the vertical direction; this application does not specifically limit the material selection of the first driving part 401 and the second driving part 201 .

It should be noted that the calibration component 101 realizes the positioning of the printed circuit board through the optical positioning points on the printed circuit board. A plurality of printed circuit boards to be detected are placed on the tray 301, and the tray 301 is driven to move to a preset position by the first driving member 401, and the proofreading member 101 captures the optical positioning point on the first printed circuit board, and the controller according to The positional relationship between the proofreading part 101 and the optical positioning point is that the first driving part 401 drives the tray 301 to move, so that the distance between the optical positioning point and the proofreading part 101 reaches a preset distance value. Since both the proofreading part 101 and the detection part 501 are arranged on the support mechanism 202, the positional relationship between the proofreading part 101 and the detection part 501 in the horizontal direction is fixed. Therefore, it is possible to drive the tray 301 to move by controlling the first driving member 401, thereby moving the tray 301 to the alignment detection member 501, and aligning the printed circuit board with the detection member 501, and then driving the detection member 501 through the second drive member 201 Test the printed circuit board to obtain the insertion loss value of the printed circuit board.

It should be noted that when the controller controls the first driving member 401 to drive the tray 301 to move, so that the proofreading part 101 is aligned with the optical positioning point on the printed circuit board, the proofreading part 101 will also check the encoded information on the printed circuit board. Collect and send the coded information to the controller, so that after the controller tests the printed circuit board through the detection part 501 and obtains the insertion loss value, it can establish a mapping relationship between the insertion loss value and the corresponding printed circuit board. It should be noted that the coded information mentioned in this embodiment includes, but is not limited to, the serial number of the printed circuit board or the two-dimensional code information.

It should be noted that the controller can include but not limited to a network analyzer and a computer, as long as it can control the first driving part 401 to drive the tray 301 according to the proofreading part 101, and control the second driving part 201 to drive the detection part 501 to The printed circuit board is tested so that the controller can obtain the insertion loss value of the printed circuit board through the detection part 501 .

It can be understood that mounting pieces are provided at both ends of the supporting mechanism 202, and the two mounting pieces extend from both sides of the supporting mechanism 202 to the bottom plate 601. One end of the mounting piece is connected to the supporting mechanism 202, and the other end is fixed on the bottom plate 601. superior. A passage for the tray 301 to move is provided between the mounting parts on both sides. When the movement of the tray 301 is controlled by the first driving member 401 , it can move in the passage below the supporting mechanism 202 to adjust the position of the tray 301 so that the testing member 501 can test the printed circuit board.

It should be noted that the support mechanism 202 can be connected to the bottom plate 601 by means of mounting parts, or other fixing structures can be arranged above the support mechanism 202 to fix the support mechanism 202, for example, a suspension method is adopted. It is only necessary to fix the positional relationship between the support mechanism 202 and the bottom plate 601 , and the present application does not specifically limit the connection relationship between the support mechanism 202 and the bottom plate 601 . Therefore, the embodiments shown in FIG. 1 , FIG. 2 and FIG. 3 do not show the connection relationship between the supporting mechanism 202 and the bottom plate 601 .

It should be noted that the detection part 501 is disposed at the bottom of the support mechanism 202 , and the detection part 501 and the proofreading part 101 both face the bottom plate 601 . When the tray 301 is driven by the first driving member 401 to move below the support mechanism 202, the proofreading member 101 can directly obtain the positional relationship between the printed circuit board on the tray 301 and the proofreading member 101, so that the controller can obtain the positional relationship between the printed circuit board and the proofreading member 101 according to the printed circuit board. The positional relationship between the plate and the proofreading member 101 is used to control the first driving member 401 to drive the tray 301, and adjust the tray 301 to a proper position for testing.

It should be noted that there are one or more detection elements 501 provided on the support mechanism 202 . When there is only one measured point on the printed circuit board, the printed circuit board can be tested only once by using the detection part 501; when there are multiple measured points on the printed circuit board, the first driving part can 401 drives the tray 301 to move, so that a single detection part 501 can detect multiple measured points in turn, or use multiple detection parts 501 to detect multiple measured points on the printed circuit board at the same time. The number of 501 is specifically limited.

It can be understood that, at least one pressure sensor is further provided on the support mechanism 202, and the pressure sensor is used to detect the pressure between the detection part 501 and the printed circuit board. When the tray 301 moves to the alignment detection part 501, and the detection part 501 has been aligned with the printed circuit board to be tested, the controller drives the detection part 501 to move in the vertical direction through the second driving part 201, thereby the printed circuit board is test. Specifically, the detection part 501 can collect the performance parameters of the printed circuit board through the way that the detection part 501 is in contact with the printed circuit board. Since during the abutment process between the detection part 501 and the printed circuit board, too much or too little pressure between the two will affect the test result, so a pressure sensor needs to be set to measure the pressure between the detection part 501 and the printed circuit board. pressure value. The detection part 501 is driven by the second drive part 201 to move in the vertical direction, so that the pressure value between the detection part 501 and the printed circuit board reaches a preset pressure value, so that the printed circuit board is tested, and the detection part is avoided. The test error caused by too tight or not pressed in place between 501 and the printed circuit board.

It can be understood that two second driving parts 201 are provided in the printed circuit board testing device, and the two second driving parts 201 respectively drive the two sides of the detection part 501 to move in the vertical direction. The mutual cooperation of 201 can average the pressure exerted on the detection part 501, so that the detection part 501 is in complete contact with the printed circuit board, reducing test errors.

It should be noted that a plurality of pressure sensors are uniformly arranged around the detection member 501 . A plurality of pressure sensors are evenly arranged around the detection part 501, and when measuring the pressure value between the detection part 501 and the printed circuit board, the pressure value between different positions of the detection part 501 and the printed circuit board can be detected more accurately , so as to more reasonably control the second driving member 201 to drive the movement of the detecting member 501 , so that the controller can obtain a more accurate insertion loss value of the printed circuit board through the detecting member 501 .

It should be noted that the pressure sensor may include but not limited to a spring pressure sensor, which only needs to measure the pressure value between the detection part 501 and the printed circuit board, such as a capacitive pressure sensor. This application does not specifically limit the selection of the pressure sensor.

It can be understood that the tray 301 is provided with a plurality of limiting parts for fixing the printed circuit board. A plurality of printed circuit boards can be embedded on the tray 301 through the limiting member, so that the printed circuit boards can be tested. The limiting member may include but not limited to positioning pins, as long as the printed circuit board can be fixed.

As shown in FIG. 4 , FIG. 4 is a flowchart of a method for testing a printed circuit board provided by an embodiment of the present application. It can be understood that this application proposes a printed circuit board testing method, which is applied to a printed circuit board testing device. The printed circuit board testing device includes a base plate, a support mechanism and a controller. The base plate is provided with a tray and a first The driving part is provided with a detecting part, a proofreading part and a second driving part on the support mechanism, and the controller is respectively connected with the detecting part, the proofreading part, the first driving part and the second driving part. The printed circuit board testing method includes but not limited to step S100, step S200, step S300 and step S400.

Step S100, acquiring the first data collected by the proofreading piece, the first data including the positional relationship between the proofreading piece and the printed circuit board.

It can be understood that the proofreading part will continuously acquire the positional relationship between itself and the printed circuit board on the tray. When the tray has not moved into the detection field of view of the proofreading piece, the proofreading piece will feed back the information that the printed circuit board is not detected to the controller, and the controller will drive the tray to continue moving through the first driving piece until the proofreading piece is detected on the tray printed circuit board. After that, the proofreading element realizes the positioning of the printed circuit board through the optical positioning points on the printed circuit board. A plurality of printed circuit boards to be detected are placed on the tray, and the tray is driven to move to a preset position by the first driving member, that is, the tray is driven to move to a position where the proofreading part can detect the printed circuit board, and the proofreading part captures the first For the optical positioning point on the printed circuit board, the controller drives the tray to move through the first driving part according to the positional relationship between the proofreading part and the optical positioning point, so that the distance between the optical positioning point and the proofreading part reaches a preset distance value.

It should be noted that the proofreading tool may include but not limited to a camera and the like. It is sufficient that the proofreading part can calibrate the position of the printed circuit board, and this application does not impose specific restrictions on the selection of the proofreading part.

Step S200, acquiring second data, the second data including the positional relationship between the proofreading part and the testing part.

It can be understood that since both the calibration piece and the detection piece are installed on the support mechanism, the positional relationship between the calibration piece and the detection piece in the horizontal direction is determined. Therefore, the controller needs to obtain the second data, and according to the positional relationship between the proofreading piece and the testing piece, drive the tray to move through the first driving piece, so that the printed circuit board is aligned with the testing piece, so that the testing piece can align with the printed circuit board. circuit board for testing.

It should be noted that the detection part may include but not limited to test probes and the like. The detection part can realize the test of the printed circuit board, so that the controller can obtain the insertion loss value of the printed circuit board. This application does not specifically limit the selection of the detection part.

Step S300, controlling the first driving member to drive the tray to the alignment detection member according to the first data and the second data.

It can be understood that the first data includes the positional relationship between the proofreading part and the printed circuit board, and the second data includes the positional relationship between the proofreading part and the testing part. The proofreading piece will continuously obtain the current first data and feed back the first data to the controller, and the controller will drive the tray to move through the first driving piece according to the positional relationship between the proofreading piece and the printed circuit board until the position on the tray The printed circuit board appears within the detection field of view of the proofreading kit. The proofreading part captures the optical positioning point on the printed circuit board, and the controller drives the tray through the first driving part according to the positional relationship between the proofreading part and the optical positioning point on the printed circuit board, and continuously adjusts the position of the tray , so that the actual distance value between the calibration piece and the optical positioning point reaches the preset distance value. After that, since the positional relationship between the detection part and the proofreading part in the horizontal direction is fixed, the controller can directly acquire the second data, and control the first driving part to drive the pallet to move according to the second data until the detection part can To prepare the printed circuit board, that is, to move the printed circuit board on the tray to align with the test piece, so that the test piece can test the printed circuit board.

Step S400, controlling the second driving part to drive the detection part to test the printed circuit board, so as to obtain the insertion loss value of the printed circuit board through the detection part.

It can be understood that after the detection part is aligned with the printed circuit board, the controller drives the detection part to test the printed circuit board through the second driving part, so as to obtain the insertion loss value of the printed circuit board through the detection part. Using the method, automatic testing is carried out on printed circuit boards, which solves the problem of low efficiency caused by manual testing in related technical solutions, improves testing efficiency, and reduces testing costs. The automatic detection method eliminates the trouble of manually testing the printed circuit boards one by one, and during the test process, the data can be sent to the controller for processing through the connection line with zero delay, so that the controller can respond in time.

It should be noted that the detection part is arranged at the bottom of the support mechanism, and both the detection part and the proofreading part face the bottom plate. When the tray is driven by the first driver to move below the supporting mechanism, the proofreading piece can directly obtain the positional relationship between the printed circuit board and the proofreading piece on the tray, so that the controller can The positional relationship is used to control the first driver to drive the tray, and the tray is adjusted to a proper position for testing. The controller can automatically control the first driving part, the second driving part, and the detection parts to operate according to the received data, and finally obtain the insertion loss value of the printed circuit board, which embodies artificial intelligence and conforms to artificial intelligence. development trend.

It should be noted that there are one or more measured points on the printed circuit board, and one or more detection parts are set on the supporting mechanism. When there is only one measured point on the printed circuit board, the printed circuit board can be tested only once by using the detection part; when there are multiple measured points on the printed circuit board, it can be driven by the first driving part The pallet is moved so that a single test piece can detect multiple measured points in turn, or use multiple test pieces to test multiple test points on the printed circuit board at the same time. This application does not specifically limit the number of test pieces .

As shown in FIG. 5 , FIG. 5 is another flowchart of a printed circuit board testing method provided by an embodiment of the present application. It can be understood that step S300 in the embodiment shown in FIG. 4 includes but not limited to step S310 and step S320.

Step S310, according to the first data, control the first driving member to drive the tray to move under the proofreading member.

Step S320, controlling the first driving member to drive the tray to move to the alignment detection member according to the second data.

It can be understood that, after the controller obtains the first data and the second data, it will control the first driving part to drive the pallet to move according to the first data and the second data, so that the detection part can detect the printed circuit board on the pallet. test. Firstly, the controller will control the first driving part to drive the tray according to the first data, and move the tray under the proofreading part. Specifically, the proofreading part captures the optical positioning point on the printed circuit board, and the controller drives the tray through the first driving part according to the positional relationship between the proofreading part and the optical positioning point on the printed circuit board, and continuously adjusts the The position of the tray, so that the actual distance value between the proofreading piece and the optical positioning point reaches the preset distance value. Afterwards, the controller controls the first driving part to drive the tray according to the second data, and moves the tray to the alignment detection part, that is, enables the detection part to align with the printed circuit board on the tray, thereby aligning the printed circuit board with the detection part. circuit board for testing. The method realizes automatic testing of the printed circuit board, solves the problem of low efficiency caused by manual testing in related technical solutions, improves testing efficiency, and reduces testing cost. The controller can automatically control the first driving part, the second driving part, and the detection parts to operate according to the received data, and finally obtain the insertion loss value of the printed circuit board, which embodies artificial intelligence and conforms to artificial intelligence. development trend.

As shown in FIG. 6 , FIG. 6 is another flowchart of a printed circuit board testing method provided by an embodiment of the present application. It can be understood that, after step S310 in the embodiment shown in FIG. 5 , step S330 is also included but not limited to.

Step S330, obtaining the coding information of the printed circuit board through the proofreading material.

It can be understood that when the controller controls the first driving part to drive the tray to move under the proofreading part so that the proofreading part is aligned with the optical positioning point on the printed circuit board, the proofreading part will also correct the encoded information on the printed circuit board Collect and send the coded information to the controller, so that after the controller tests the printed circuit board through the test piece and obtains the insertion loss value, it can establish a mapping relationship between the insertion loss value and the corresponding printed circuit board, thereby improving Manage well.

As shown in FIG. 7 , FIG. 7 is another flowchart of a printed circuit board testing method provided by an embodiment of the present application. It can be understood that step S400 in the embodiment shown in FIG. 4 may specifically include but not limited to step S410.

Step S410, controlling the second driving member to drive the supporting mechanism to move down until the detecting member contacts the printed circuit board, so as to obtain the insertion loss value of the printed circuit board through the detecting member.

It can be understood that the testing part tests the printed circuit board by abutting against the tested point on the printed circuit board. When the detection part touches the measured point on the printed circuit board, the detection part can detect the performance parameters of the printed circuit board and feed back the performance parameters to the controller. Insertion loss value.

As shown in FIG. 8 , FIG. 8 is another flowchart of a printed circuit board testing method provided by an embodiment of the present application. It can be understood that step S410 in the embodiment shown in FIG. 8 includes but not limited to step S411 , step S412 , step S413 and step S414 .

Step S411, acquiring the pressure value collected by the pressure sensor.

Step S412, controlling the support mechanism to move in the vertical direction according to the pressure value.

Step S413, when the pressure value reaches the preset threshold, the performance parameters of the printed circuit board currently detected by the detection part are acquired.

Step S414, determining the insertion loss value of the printed circuit board according to the performance parameters.

It can be understood that at least one pressure sensor is further arranged on the support mechanism, and the pressure sensor is used to detect the pressure between the detection element and the printed circuit board. When the tray is moved to align with the detection part, and the detection part has been aligned with the printed circuit board to be tested, the controller drives the detection part to move vertically through the second driving part, so as to test the printed circuit board. Specifically, the detection part can collect the performance parameters of the printed circuit board through the abutting method of the detection part and the printed circuit board, and then obtain the insertion loss value of the printed circuit board. During the abutment process between the test piece and the printed circuit board, too much or too little pressure between the two will affect the test results, so it is necessary to set up a pressure sensor to continuously measure the pressure between the test piece and the printed circuit board. Pressure value. Therefore, first perform step S411 to obtain the pressure value collected by the pressure sensor, then perform step S412, drive the detection part to move in the vertical direction through the second driving part according to the pressure value, and then perform step S413, when the detection part and the printed circuit board After the pressure value between reaches the preset threshold value, control the detection part to test the printed circuit board, that is, measure the performance parameters of the printed circuit board through the detection part, and then perform step S414, the controller obtains the printed circuit board according to the performance parameters The insertion loss value avoids the test error caused by too tight or not pressed in place between the test piece and the printed circuit board.

It can be understood that two second driving parts are provided in the printed circuit board testing device, and the two second driving parts respectively drive the two sides of the detection part to move in the vertical direction, and through the mutual cooperation of the two second driving parts , can average the pressure exerted on the test piece, so that the test piece is in complete contact with the printed circuit board, reducing test errors.

It should be noted that a plurality of pressure sensors are uniformly arranged around the detection piece. A plurality of pressure sensors are evenly arranged around the detection piece, and when measuring the pressure value between the detection piece and the printed circuit board, the pressure value between different positions of the detection piece and the printed circuit board can be detected more accurately, so that the The movement of the detection part driven by the second driving part is reasonably controlled, so that the controller can obtain a more accurate insertion loss value of the printed circuit board through the detection part.

As shown in FIG. 9 , FIG. 9 is another flowchart of a printed circuit board testing method provided by an embodiment of the present application. It can be understood that the embodiment shown in FIG. 9 includes but is not limited to step S510, step S520, step S530, step S540, step S550, step S560 and step S570.

Step S510, drive the tray to a preset position through the first driving element, and obtain first data through the proofreading element.

Step S520, controlling the first driving member to drive the pallet to move according to the first data until the distance between the calibration member and the optical positioning point on the printed circuit board reaches a preset distance value.

Step S530, acquiring the coding information of the printed circuit board collected by the proofreading tool.

Step S540, acquiring second data, and controlling the first driving member to drive the tray to move under the detecting member according to the second data.

Step S550, controlling the second driving member to drive the detection member to move in the vertical direction, and at the same time obtain the pressure value from the pressure sensor.

Step S560, when the pressure value reaches the preset threshold, obtain the performance parameter measured by the current detection part.

Step S570, determining the insertion loss value of the printed circuit board according to the performance parameters.

It can be understood that, after the printed circuit board is placed on the tray, step S510 is first performed to drive the tray to a preset position through the first driving element, and obtain first data through the proofreading element, the first data includes the proofreading element and the printed circuit board. The positional relationship of the circuit board. Then execute step S520, control the first driver to drive the tray to move according to the first data, and move the tray until the distance between the proofreading element and the optical positioning point on the printed circuit board reaches a preset distance value, and then execute step S530, Obtain the coding information of the printed circuit board collected by the proofreading part, so that after the controller tests the printed circuit board through the test part and obtains the insertion loss value, it can establish a mapping relationship between the insertion loss value and the corresponding printed circuit board . Next, step S540 is executed to obtain the second data, and control the first driving part to drive the tray to move under the detection part according to the second data. Wherein, the second data includes the positional relationship between the proofreading part and the testing part. After the detection part is aligned with the printed circuit board, step S550 is executed to control the second driving part to drive the detection part to move in the vertical direction, and obtain the pressure value from the pressure sensor at the same time. The position of the detection part is constantly adjusted through the second driving part to adjust the pressure value between the detection part and the printed circuit board. When the pressure value reaches the preset threshold, step S560 is executed to obtain the performance parameters measured by the current detection part, and finally step S570 is executed to determine the insertion loss value of the printed circuit board according to the performance parameters. The method realizes the automatic test of the printed circuit board, and can still automatically measure the insertion loss value of the printed circuit board without manual operation, thereby improving work efficiency and reducing test cost. The controller can automatically control the first driving part, the second driving part, and the detection parts to operate according to the received data, and finally obtain the insertion loss value of the printed circuit board, which embodies artificial intelligence and conforms to artificial intelligence. development trend.

It can be understood that there may be multiple measured points on the same printed circuit board, and the distances between adjacent measured points are equal. After detecting the current measured point, drive the detection part to move up through the second drive part, and then drive the tray to move through the first drive part, so that the next point to be measured is aligned with the detection part, so that the printed circuit board can be aligned with the detection part. All the points to be tested are tested.

It should be noted that, after the test of the current printed circuit board is completed, if there are untested printed circuit boards placed on the tray, repeat steps S510 to S570 until all the printed circuit boards on the tray are tested . After all the printed circuit boards on the tray have been tested, the first driver drives the tray to move out from under the test piece, and at the same time sends a prompt message that the test is completed, so that the operator can replace the printed circuit boards on the tray, and then start a new test. round of testing.

It should be noted that after the test of the printed circuit board is completed, the controller will send the measured insertion loss value and other data to the processing terminal, and the processing terminal will analyze the received data, perform de-embedding processing at the same time, and save Analyze programs and data. The automatic detection method eliminates the need to manually test the printed circuit boards one by one, and after the test is completed, the data can be sent to the processing terminal through the connection line with zero delay for processing and analysis, which is convenient and fast.

In addition, another embodiment of the present application also provides a detection device, which includes: a memory, a processor, and a computer program stored in the memory and operable on the processor.

The processor and memory can be connected by a data bus or otherwise.

As a non-transitory computer-readable storage medium, memory can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory may include memory located remotely from the processor, which remote memory may be connected to the processor through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The non-transitory software programs and instructions required to realize the printed circuit board testing method of the above-mentioned embodiment are stored in the memory, and when executed by the processor, the printed circuit board testing method in the above-mentioned embodiment is executed, for example, the above Described method steps S100 to S400 in FIG. 4 , method steps S310 to S320 in FIG. 5 , method steps S310 and step S330 in FIG. 6 , method steps S410 in FIG. 7 , method steps S411 to S414 in FIG. 8 And the method steps S510 to S570 in FIG. 9 .

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, an embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by a processor or a controller, for example, by the above-mentioned Execution by a processor in the embodiment of the detection device can cause the above-mentioned processor to execute the printed circuit board testing method in the above-mentioned embodiment, for example, execute the method steps S100 to S400 in FIG. 4 described above, and the method in FIG. 5 Steps S310 to S320 , method steps S310 and S330 in FIG. 6 , method steps S410 in FIG. 7 , method steps S411 to S414 in FIG. 8 , and method steps S510 to S570 in FIG. 9 .

The embodiment of the present application includes: the printed circuit board testing method is applied to the printed circuit board testing device, the printed circuit board testing device includes a base plate, a support mechanism and a controller, a tray and a first driving member are arranged on the base plate, and the support mechanism A detecting part, a proofreading part and a second driving part are provided, and the controller is respectively connected with the detecting part, the proofreading part, the first driving part and the second driving part. First, the controller acquires the second data and the first data collected by the proofreading piece, wherein the first data includes the positional relationship between the proofreading piece and the printed circuit board, and the second data includes the positional relationship between the proofreading piece and the testing piece. The controller controls the first driving part to drive the tray according to the first data and the second data, so that the tray moves to the bottom of the testing part, and then controls the second driving part to drive the testing part to test the printed circuit board to pass the testing part Get the insertion loss value of the printed circuit board. Based on this, the position detection of the printed circuit board on the tray can be automatically performed, so as to obtain the insertion loss value of the printed circuit board. Compared with the existing testing method, this application uses the calibration piece to check the position of the tray, and drives the tray to move to a suitable position through the first driving piece, and then drives the detection piece to check the printed circuit on the tray through the second driving piece. The board is inspected, which avoids the increase of the test cost caused by manual inspection one by one. Using the method, automatic testing is carried out on printed circuit boards, which solves the problem of low efficiency caused by manual testing in related technical solutions, improves testing efficiency, and reduces testing costs.

Those skilled in the art can understand that all or some of the steps in the methods disclosed above or the functional modules/units in the devices can be implemented as software, firmware, hardware and an appropriate combination thereof.

In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit . Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

Some embodiments of the present application have been described above with reference to the accompanying drawings, and the scope of rights of the present application is not limited thereto. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the present application shall fall within the scope of rights of the present application.

Claims

A printed circuit board testing device, comprising:

a bottom plate, the bottom plate is provided with a tray and a first driver, the tray is used to place a printed circuit board, and the first driver is used to drive the tray to move horizontally on the bottom plate;

a supporting mechanism, the supporting mechanism is provided with a detection piece, a proofreading piece and a second driving piece, the detection piece is used to test the printed circuit board, and the proofreading piece is used to correct the position of the tray, The second driving part is used to drive the detection part to move in the vertical direction;

A controller is respectively connected to the detection part, the proofreading part, the first driving part and the second driving part, and the controller is used to control the first driving part to drive the The tray, and controlling the second driving part to drive the detection part to test the printed circuit board, so that the controller can obtain the insertion loss value of the printed circuit board through the detection part.
The printed circuit board testing device according to claim 1, wherein both ends of the supporting mechanism are provided with mounting pieces, and the mounting pieces extend from both sides of the supporting mechanism to the bottom plate, the The mounting parts are fixed on the bottom plate, and a channel for the tray to pass is provided between the mounting parts on both sides.
The printed circuit board testing device according to claim 2, wherein the detection part is arranged at the bottom of the supporting mechanism, and both the detection part and the proofreading part face the bottom plate.
The printed circuit board testing device according to claim 1, wherein at least one pressure sensor is further provided on the support mechanism, and the pressure sensor is used to detect the pressure between the detection part and the printed circuit board. pressure.
The printed circuit board testing device according to claim 1, wherein a plurality of limiting members are arranged on the tray, and the limiting members are used to fix a plurality of the printed circuit boards.
A printed circuit board testing method, applied to a printed circuit board testing device, the printed circuit board testing device includes a base plate, a support mechanism and a controller, a tray and a first driver are arranged on the base plate, the The supporting mechanism is provided with a detection part, a proofreading part and a second driving part, and the controller is respectively connected with the detection part, the proofreading part, the first driving part and the second driving part;

The methods include:

Acquiring the first data collected by the proofreading piece, the first data including the positional relationship between the proofreading piece and the printed circuit board;

Acquiring second data, the second data including the positional relationship between the proofreading part and the detection part;

controlling the first driving member to drive the tray to move to align with the detection member according to the first data and the second data;

The second driving part is controlled to drive the detection part to test the printed circuit board, so as to obtain the insertion loss value of the printed circuit board through the detection part.
The printed circuit board testing method according to claim 6, wherein the first driving member is controlled according to the first data and the second data to drive the tray to move to align with the detection member, include:

controlling the first driving member to drive the tray to move under the proofreading member according to the first data;

The first driving member is controlled according to the second data to drive the tray to move to align with the detecting member.
The printed circuit board testing method according to claim 7, wherein, after controlling the first driving member to drive the tray to move below the proofreading member according to the first data, further comprising:

The coding information of the printed circuit board is obtained through the proofreading piece.
The printed circuit board testing method according to claim 6, wherein the said second driving part is controlled to drive the detection part to test the printed circuit board, so as to obtain the printed circuit board through the detection part. Control the insertion loss value of the circuit board, including:

The second driving part is controlled to drive the support mechanism to move down until the detection part contacts the printed circuit board, so as to obtain the insertion loss value of the printed circuit board through the detection part.
The printed circuit board testing method according to claim 9, wherein a pressure sensor is further provided on the support mechanism, and the pressure sensor is used to detect the pressure between the detection part and the printed circuit board, The control of the second driving member to drive the supporting mechanism to move down until the detecting member abuts against the printed circuit board, so as to obtain the insertion loss value of the printed circuit board through the detecting member, includes :

Acquiring the pressure value collected by the pressure sensor;

controlling the support mechanism to move vertically according to the pressure value;

When the pressure value reaches a preset threshold, acquire the performance parameters of the printed circuit board currently detected by the detection member;

The insertion loss value of the printed circuit board is determined according to the performance parameter.
A detection device, comprising a memory, a processor, a program stored on the memory and operable on the processor, and a data bus for realizing connection and communication between the processor and the memory, wherein , when the program is executed by the processor, the steps of the printed circuit board testing method according to any one of claims 6 to 10 are realized.
A computer-readable storage medium storing a computer-executable program, wherein the computer-executable program is used to make a computer execute the printed circuit board testing method according to any one of claims 6-10.