TWM650153U - Circuit board electrical test editing system - Google Patents

Abstract

A circuit board electrical test editing system is used to solve the conventional problems of confusing electrical test of circuit boards and difficulty in editing and sorting. The system includes: an imaging module, which captures a circuit diagram of a circuit board under test; and an editing module, which is coupled to the imaging module. The editing module selects several test points in the circuit diagram, and in each The test point is marked with a test code. The editing module determines the electrical status of each test point. The editing module outputs an electrical setting table. The electrical setting table includes the test codes of the several test points and electrical state.

Description

Circuit board electrical test editing system

This creation is about a circuit board process improvement technology, especially a circuit board electrical test editing system that can quickly determine the position and electrical status of test points on the circuit board.

There are a large number of metal wires with different functions distributed on the circuit board. For example, they are used to electrically connect two or more electronic components, solder chip pins, fill blank areas, etc. After the circuit board is manufactured, the above-mentioned metal wires will be electrically The test is also called an Open/Short Test, for example: testing the continuity and insulation of each metal wire to determine whether the metal wires that are not connected to the circuit board circuit are insulated from other lines. It is an open circuit, and it is judged whether the electrically connected metal wire is conductive and it is a short circuit, to detect whether the circuit board used to carry electronic components can operate the electrical function normally. In addition, the electrical testing method of the circuit board can be full contact probe testing or flying probe testing, which uses two to four movable probes to go back and forth between several test points on the circuit board. Move, touch, measure, and repeat several times to complete the test of a circuit board. Although circuit boards with various circuit patterns can be tested, the test process is slow and time-consuming; or you can use a dedicated fixture (Dedicated Fixture) to test, by By placing several probes on the fixture and connecting the test lines, and making the probes correspond to all the test point positions of the circuit board product one by one, the entire circuit board can be tested through the fixture at one time, but special fixtures must be manufactured for different products. .

However, with the miniaturization and improvement of functions of electronic products, the circuits and contacts on the circuit board are complex and dense, resulting in confusing distribution of the locations and characteristics (open circuit/short circuit) of each test point on the circuit board, making it difficult to identify. Therefore, in Before performing the above conventional circuit board electrical testing method, it must be confirmed Identify the types of tests accepted by each test point to avoid misjudgments caused by incorrect test results, which may lead to the scrapping of normal circuit boards or the shipment of defective circuit boards.

In view of this, there is still a need to improve conventional circuit board electrical testing.

In order to solve the above problems, the purpose of this creation is to provide a circuit board electrical testing and editing system, which can save manpower and time in determining the electrical properties of circuit boards.

The secondary purpose of this creation is to provide a circuit board electrical test editing system that can improve the efficiency of the test process.

Another purpose of this invention is to provide a circuit board electrical testing and editing system that can detect the circuit function and installation quality of the circuit board.

Directionality or similar terms used throughout this article, such as "left", "right", "top (top)", "bottom (bottom)", "inside", "side", etc., are mainly referred to the attached drawings The direction, directionality or similar terms are only used to assist in explaining and understanding the embodiments of the present invention, but are not intended to limit the present invention.

The use of the quantifier "a" or "one" in the components and components recorded in the entire text of this creation is only for convenience of use and to provide the usual meaning of the scope of this creation; in this creation, it should be interpreted as including one or at least one, and single The concept of also includes the plural unless it is obvious that something else is meant.

The "system" and "module" mentioned in the full text of this article may each include at least one "processor". The processor refers to a processor that has specific functions and is implemented by hardware or hardware and software. Various data processing devices are used to process analysis information or generate corresponding control information, such as electronic controllers, servers, cloud platforms, virtual machines, desktop computers, notebook computers, tablet computers or smart phones, etc. The creation can be understood by those with ordinary knowledge in the technical field to which the creation belongs. The systems and modules described in this creation may also include corresponding data receiving or transmitting units to receive or transmit the required data. The systems and modules described in this creation may also include corresponding databases or storage units to store required data. In particular, the processor may be a collection of multiple processors based on a distributed system architecture, and is used for the process, mechanism and result of information streaming processing between multiple processors.

The circuit board electrical test and editing system of this invention includes: an image module that captures a circuit diagram of a circuit board to be tested; and an editing module that is coupled to the image module, and the editing module is connected to the circuit board Select several test points and mark a test code on each test point. The editing module determines the electrical status of each test point. The editing module outputs an electrical setting table. The electrical setting table is Contains the test codes and electrical status of the several test points.

According to this, the circuit board electrical test editing system of this invention can determine the test point position and electrical status of the circuit board by generating the circuit diagram and electrical setting table of the circuit board to be tested. In this way, on the circuit board During the test process, referring to the circuit diagram and the electrical setting table can quickly identify the position of the test point that the test probe is to contact, and determine whether the test result is normal. This has the effect of saving testing work manpower and shortening the testing process time.

Wherein, the circuit diagram is composed of several lines arranged and distributed, and the several lines surround an installation area. In this way, through the distribution of the circuit diagram, it can be identified that the several circuits form conductive loops or fill blank areas, which has the effect of allowing the system to determine the electrical properties of the circuits.

The test points are the end points of the lines distributed on opposite sides of the circuit diagram. In this way, the position of the several test points allows the test probe to be easily moved to the position, which has the effect of improving the test efficiency.

Each line has at least one test point. In this way, the plurality of circuits can be tested separately through the plurality of test points, which has the effect of detecting the quality of the circuit board.

One of the test points is located on the same line as at least one other test point, and the electrical state of the test point is a short circuit state. In this way, detecting the short circuit status can confirm Whether the electrical connection function of the line is normal has the function of checking the loop function of the circuit board.

Wherein, one of the test points and at least one other test point are located on the same line, and the line overlaps within the range of the installation area. The electrical state of the test point is an installation short circuit state. In this way, detecting the short-circuit status of the installation can also confirm the usage status of the installed electronic components, which has the effect of confirming the installation quality and the normality of the components.

Among them, the line where one of the test points is located is not connected to other test points, and the electrical state of the test point is an open circuit state. In this way, the blank area on the circuit board is filled with non-conductive support lines. By detecting the open circuit state, it can be confirmed that the support lines are not conductive and will not affect the circuit. This has the effect of avoiding short circuits caused by the support lines.

Among them, if the line where one of the test points is located is not connected to other test points, and the line overlaps within the range of the installation area, the electrical state of the test point is an installation open circuit state. In this way, detecting the open circuit status of the installation can confirm that the pins of the electronic components do not contact other circuits, which has the effect of confirming the normal operation of the components.

Among them, the editing module modifies the circuit diagram based on the electrical status determination results of the several test points, and converts the lines where the test points of various electrical statuses are located into frame lines of different colors, thicknesses, or dotted lines. In this way, the function and distribution of each line can be quickly identified through the modified line diagram, which has the effect of saving manual interpretation time and improving detection efficiency.

A1:Image module

A2: Edit module

G:Road map

E: Electrical setting table

C: Line

F:Installation area

T: test point

M: Test encoding

S1: short circuit status

S2: Installation short circuit status

O1: open circuit status

O2: Installation open circuit status

[Figure 1] System block diagram of a preferred embodiment of this invention.

[Figure 2] The unedited wiring pattern of the circuit board to be tested according to a preferred embodiment of this invention.

[Figure 3] A diagram of a preferred embodiment of this invention capturing a circuit diagram image of a circuit board under test.

[Figure 4] A diagram showing the selection of test points and marking of test codes in a preferred embodiment of this invention.

[Figure 5] A diagram showing the situation of determining the electrical status of a test point according to a preferred embodiment of this invention.

In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following is a preferred embodiment of the present invention and a detailed description with accompanying drawings; in addition, the same symbols are marked in different drawings. are considered to be the same and their description will be omitted.

Please refer to Figure 1, which is a preferred embodiment of the circuit board electrical test editing system of the present invention. It includes an image module A1 and an editing module A2. The editing module A2 is coupled to the image module. A1, the imaging module A1 reads a circuit diagram G of the circuit board, and the editing module A2 processes the circuit diagram G and outputs an electrical setting table E.

Please refer to Figures 1 and 2. The imaging module A1 can include a photographic lens, which is used to directly capture the circuit layer of a circuit board semi-finished product or the film of the circuit board circuit produced by exposure and development to obtain The circuit diagram G is composed of several circuits C arranged and distributed, and the several circuits C surround an installation area F. The installation area F is an area reserved for installing electronic components, in which several circuits C C extends into the installation area F. The direction in which the lines are arranged can be horizontal, vertical or diagonal according to the installation requirements of electronic components. This invention is not limited to this.

Please refer to Figures 3 to 5 again. After the editing module A2 obtains the circuit diagram G through the image module A1, the pattern on the circuit diagram G can include the several circuits C and the installation area F. Convert to frame line form, so that the editing module A2 can identify, mark, classify and other editing processes on the converted circuit diagram G. As shown in Figure 3, each circuit C and the installation area F are formed respectively. The frame line is closed, and the inside of the frame line is preferably not filled. Several of the lines C overlap the installation area F and enter the frame line range of the installation area F.

In addition, the editing module A2 can identify the several lines C in the geometric pattern composed of multiple frame lines, as shown in Figure 4. In this embodiment, the editing module A2 can be The pattern selection starts from the left side of the lower row of the circuit diagram G and goes to the right, and then from the right to the left of the upper row, all the lines C and their test points T have been selected. However, the selection direction and order of this creation are not based on this. limit. Specifically, the endpoints of each line C are distributed on opposite sides of the line diagram G as test points T. Each line C can have several test points T, and the several test points T can be distributed on the line. The upper and lower sides of the diagram G can also be the left and right sides, and several test points T located on the same line C can be arranged on both sides of the line diagram G, or they can be located on the same side. This creation Not limited to this. The editing module A2 can also mark several test codes M at the positions of the test points T according to the selection order. The test codes M can be a sequence from small to large given in the order of selection, for example In this embodiment, it is 1, 2, 3, ..., 18.

Next, the editing module A2 determines and classifies the electrical status of the test points T based on the corresponding relationship between each test point T and other test points T, each line C, and the installation area F, such as No. 5 As shown in the figure, the system may include a short circuit state S1, an installation short circuit state S2, an open circuit state O1 and an installation open circuit state O2, wherein the test point T of the short circuit state S1 and the installation short circuit state S2 is connected to at least one other The test point T is located on the same line C. The line C where the test point T of the short-circuit state S1 is located is used to conduct electricity in the circuit board circuit; and the line C where the test point T of the installation short-circuit state S2 is located overlaps with this Within the frame line of the installation area F, it can also be used to electrically connect electronic components; the line C where the test point T of the open circuit state O1 and the installation open circuit state O2 is located is not connected to other test points T, and the test point of the open circuit state O1 The line C where T is located is used to support the blank area of the circuit board wiring and is not electrically connected to other circuits; and the line C where the test point T of the installation open circuit state O2 is located overlaps within the frame line of the installation area F, and is only used For electrically connecting electronic components. Based on the results of judgment and classification, the editing module A2 can also convert the line C where the test point T of various electrical states is located into a frame line of different colors, thicknesses or dotted lines, which can be used to quickly identify the line C. The expected results of the connection function and electrical tests.

Finally, the editing module A2 can edit each test point T according to its electrical properties. state, and fill in the table according to the order of the test codes M to generate the electrical setting table E. In this way, before and after a circuit board is tested, by checking the circuit diagram G of the circuit board and comparing it with the electrical setting table E, the positions of the test points T to be contacted by the test probes can be quickly identified, and Determining whether the test results of each test point T are normal has the effect of saving manual judgment and test operation time. For example, before the electronic components are installed in the installation area F, a circuit board test is performed. For the short-circuit state S1 and the installation short-circuit state S2, the resistance value measured at each test point T is tested if it can be less than the conduction threshold. Normal, and for the resistance value measured at each test point T of the open circuit state O1 and the installation open circuit state O2, if it can be greater than the insulation resistance, the test is normal; also, after the electronic components are installed in the installation area F, in the Each test point T in the installation short-circuit state S2 and the installation open-circuit state O2 can also test the electrical properties of the electronic component. It can be compared with the functional characteristics of the electronic component to determine whether there are defects in the welding of the circuit board or the function of the electronic component. Is it normal?

Please refer to Figures 4 and 5, which are a preferred embodiment of the editing results of the circuit board electrical test editing system. In this embodiment, several circuits are selected in the lower row of the circuit diagram G. The end of C is a number of test points T, and several test codes M from 1 to 10 are marked from left to right. Then select a few of the line C in the upper row of the line diagram G. The end of C is a number of test points T, and marked by Several test codes M marked from 11 to 18 from right to left; judgment is made based on the relative positions of the several test points T. Among them, the three test points T with the test codes M 1, 2, and 18 are located on the same line C. above, so the three test points T are in the short-circuit state S1. Similarly, the test points T with the test codes M of 3, 11, 12, and 17 are also in the short-circuit state S1; and the test codes M are 5, 12, and 17. The six test points T of 7, 9, 10, 14, and 15 are not only short-circuited but also connected to the installation area F. Therefore, the six test points T are in the installation short-circuit state S2; the test codes M are 4, 6, and 16. The three test points T are located on different lines C, so the three test points T are in the open circuit state O1; in addition, the two test points T with the test codes M 8 and 13 are connected to the installation area in addition to short circuit F, so the two test points T are in the open circuit state O2 of the installation. Please refer to Table 1, which is the above classification result of this embodiment. The electrical setting table E generated as a table is output.

To sum up, the circuit board electrical test editing system of this invention can determine the test point position and electrical status of the circuit board by generating the circuit diagram and electrical setting table of the circuit board to be tested. In this way, During the circuit board testing process, referring to the circuit diagram and the electrical setting table can quickly identify the position of the test point that the test probe is to contact, and determine whether the test result is normal. This can save testing work manpower and shorten the testing process time. effect.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make various changes and modifications relative to the above-described embodiments without departing from the spirit and scope of the invention. The technical scope protected by the creation, therefore, the protection scope of the creation shall include all changes within the literal and equivalent scope recorded in the appended patent application scope.

A1:Image module

A2: Edit module

G:Road map

F: Electrical setting table

Claims (9)

A circuit board electrical testing and editing system includes: an image module that captures a circuit diagram of a circuit board to be tested; and an editing module that is coupled to the image module, and the editing module selects from the circuit diagram Several test points, and a test code is marked on each test point. The editing module determines the electrical status of each test point. The editing module outputs an electrical setting table, and the electrical setting table contains the Test codes and electrical status of several test points. For example, the circuit board electrical testing and editing system of claim 1, wherein the circuit diagram is composed of several lines arranged and distributed, and the several lines surround an installation area. For example, the circuit board electrical test editing system of claim 2, wherein the test points are the end points of the circuits distributed on opposite sides of the circuit diagram. The circuit board electrical test editing system of claim 3, wherein each circuit has at least one test point. For example, the circuit board electrical test editing system of claim 4, wherein one of the test points and at least one other test point are located on the same line, and the electrical state of the test point is a short circuit state. For example, the circuit board electrical test editing system of claim 4, wherein one of the test points and at least one other test point are located on the same line, and the line overlaps within the range of the installation area, the electrical status of the test point It is an installation short circuit state. For example, the circuit board electrical test editing system of claim 4, wherein the line where the test point is located is not connected to other test points, and the electrical state of the test point is an open circuit state. For example, the circuit board electrical test editing system of request item 4, wherein the line where the test point is located is not connected to other test points, and the line overlaps within the range of the installation area, the electrical status of the test point is an installation open circuit status. Such as the circuit board electrical test editing system of claim 4, wherein the editing module converts the lines where the test points of various electrical states are located into different colors, thicknesses or Dashed border.