WO2019019498A1

WO2019019498A1 - Pcb line acquisition method, acquisition system and maintenance method

Info

Publication number: WO2019019498A1
Application number: PCT/CN2017/113049
Authority: WO
Inventors: 魏延福
Original assignee: 深圳砾盈科技发展有限责任公司
Priority date: 2017-07-25
Filing date: 2017-11-27
Publication date: 2019-01-31
Also published as: CN107392903A

Abstract

Disclosed are a PCB line acquisition method, acquisition system and maintenance method. The acquisition system comprises a data acquisition unit, a data calibration unit, a position determination unit, a data storage unit and a display unit, wherein the data acquisition unit acquires a line map and a physical map of a PCB circuit board and acquires parameter information about various elements on the line map; the position determination unit determines a pad corresponding to a working instruction, so as to perform query and locating, and analyse adjacent lines communicated with the pad; the display unit displays the adjacent lines communicated with the pad and the current state, such that maintenance personnel can quickly query the PCB line map and find a site of the pad to be maintained, and the display unit simultaneously displays the other pads communicated with the pad, clearly showing a communication path, and performing accurate maintenance. In particular, for a PCB board that does not have an existing line map or of which a line map is difficult to acquire, a circuit board is automatically generated by means of scanning and automatic detection, such that the problems of a difficulty in line maintenance and a slow speed are effectively overcome.

Description

PCB circuit acquisition method, system and maintenance method

Technical field

The invention relates to the technical field of PCB circuit boards, in particular to a PCB circuit acquisition method, system and maintenance method.

Background technique

PCB design software, when designing the circuit board, the circuit needs manual layout, the relationship between the pad point and the trace can be reflected, but because the PCB is a multi-layer structure, the design software operation is complicated, even if the professional designer has accidentally changed the PCB. The direction of the connection of the pad points.

technical problem

With the PCB design software, when viewing the circuit board point position, the original document of the electronic product circuit board design must be available. For the maintenance, the test personnel can not obtain the design and manufacturing engineering documents of the product manufacturer. Because the product manufacturers are highly technically confidential in order to prevent the products from being copied, it is impossible to open the PCB production documents of the circuit board casually. Therefore, it is almost impossible for the engineers who are in need of maintenance and testing to use the PCB design software to query the line direction.

Problem solution

Technical solution

In view of the deficiencies in the above technology, the present invention provides a PCB line acquisition method, system and method, which can automatically acquire a circuit diagram of a PCB circuit board and automatically acquire component parameters, thereby facilitating maintenance personnel to accurately determine the solder joints for maintenance. For quick repairs.

In order to achieve the above object, a PCB circuit acquisition method of the present invention includes:

The data acquisition unit acquires a circuit diagram of the PCB circuit board and a physical map scan file;

Obtain parameter information of each component on the circuit diagram, and match the circuit diagram with the physical map;

Match the picture and position of the physical map on the circuit diagram, and input the corresponding component model and parameters;

Manually select and connect the components that are connected to them; connect the components connected to each component in series, and save them;

Match the PCB on the data storage unit through the data calibration unit according to the direction of each component of the circuit diagram Circuit diagram and physical map, parameters of each component, connection relationship with each other, remarks pin pad repair notes;

Store matching line maps, physical maps, and name them, save them;

Recalling the PCB circuit diagram of the PCB to be inspected, detecting whether there is a click command on the transferred PCB circuit diagram, determining the connected pad corresponding to the clicked component pad by the position determining unit, and analyzing the phase of the connected pad Neighboring line

The display unit displays the position of the adjacent component to which the pad is connected and the corresponding remark information.

Wherein, the open circuit of the resistor and capacitor inductive component on the PCB circuit board is measured by the digital bridge on the data acquisition unit, the actual parameters of the original such as the resistor, capacitor and inductor, and the information of the line conduction are obtained, and the parameter is stored in the data storage unit. .

The acquisition of the route map is connected to the remote server through the communication unit, and obtains the route map information published by the manufacturer, or the locally uploaded route map and related parameters, and the relevant parameters on the route map are obtained by manual customization.

Wherein, the circuit diagram is obtained through layer-by-layer analysis of the PCB, and the obtaining steps include:

The circuit board components are removed, and the front and back surfaces are scanned by a scanning device;

Grind a layer with sandpaper, scan the device to generate a picture, and then grind one layer and then scan until all layers of the board are scanned; according to the line in the picture, through holes or laser blinds between the layers Buried hole connection

Manually determine the direction of the line and manually enter the parameters of the component.

The invention also discloses a PCB line acquisition system, comprising:

The data acquisition unit: acquires a pad line, defines a function of each pad, acquires parameter information of each component on the line, and acquires a physical map file of the corresponding pad line;

Data calibration unit: analyzes the selected PCB circuit board traces and parameters of each component, analyzes the position information of each pad point, and stores it in the data storage unit; analyzes the corresponding conduction of the pad on the selected PCB line a line; matching the corresponding physical map file according to the conduction line and the component parameters;

Position determining unit: obtaining position information of each pad line and component through a data calibration unit, and determining an address of the selected pad and component;

Data storage unit: a circuit diagram for storing a PCB circuit board, line parameter information, and a physical map file;

Display unit: Display the corresponding PCB line and the corresponding physical map through the MDI dual window, and display the conduction line corresponding to the pad.

Wherein, the data acquisition unit comprises a digital bridge, the digital bridge measures the parameters of the component, and the data calibration unit stores the parameters to the data storage unit.

The data acquisition unit includes a scanning device and an automatic identification device. The scanning device acquires a picture of a PCB circuit board, and the automatic identification device automatically determines line information on the PCB circuit board image, and automatically extracts the line information to generate a PCB. The wiring diagram is passed to the data storage unit for storage.

There is further included a communication unit that is connected to the remote server and reads data of the remote server.

The invention discloses a PCB line maintenance method, a PCB line maintenance method performed by the above-mentioned PCB line acquisition method and a PCB line acquisition system, and the following steps are included:

According to the model of the PCB to be repaired, select the PCB layout diagram of the corresponding model on the MDI dual window interface of the display unit;

According to the function of each component on the PCB circuit diagram or the pin pad maintenance note, according to the failure of the PCB to be repaired, find a corresponding component on the interface of the corresponding PCB circuit diagram of the display unit;

Clicking on the component, all corresponding components in communication with the component are illuminated and connected in series; the unconnected component and the empty pad display a different color than the connected component;

Click on the corresponding component to view the physical map, component model, and parameters of the component;

Find the corresponding repair location according to the display interface.

The display unit is further provided with a plurality of function keys, and the function keys include:

Refresh: restores the red color of the lighting pad to the original color; enlarges: enlarges the board component and pad size; reduces: reduces the display board component and pad size; fits the screen (F4): enlarges the board Displayed in window size, suitable for window size; fast zoom: can enlarge the board directly to the maximum or reduce to the minimum or specify the zoom size; display / hidden foot (N): display all the empty feet, display the empty feet in blue Pad; display/hidden frame (F): display the border of all components; display/implicit note (B): display and edit custom components, pads, network notes information; display / hidden component picture: display component board Component physical map or a single window physical map in small window; display / hidden bit number: display component name number, pad pin number; display / hidden network: display Indicates the network name, the trace between the network points, the network oscilloscope picture; the internal network trace: display the surface trace or other internal layer traces; color scheme: configure the color display and magnification of each element of the circuit board and color preset Program.

Advantageous effects of the invention

Beneficial effect

Compared with the prior art, the present invention discloses a PCB circuit acquisition method, system and method, which acquires a circuit diagram and a physical map of a PCB circuit board through a data acquisition unit, and obtains parameter information of each component on the circuit diagram, and the line is obtained. The figure is matched with the physical map and stored. When the PCB board to be tested is scanned and analyzed, the parameters and physical maps on the PCB board are matched by the data calibration unit, and the position corresponding to the work instruction is judged by the position determining unit. The adjacent lines connected to the pad are analyzed; the display unit displays the adjacent line and current state of the pad connection. Based on the above system, the maintenance personnel can quickly query the PCB circuit diagram to conveniently find the position of the pad component to be repaired. And accurate maintenance, especially for PCB boards that do not have ready-made circuit diagrams, or difficult to obtain the circuit diagram, through scanning, automatic detection, automatic generation of circuit boards, effectively overcome the problem of difficult line maintenance and slow speed.

Brief description of the drawing

DRAWINGS

1 is a PCB line acquisition system according to an embodiment of the present invention;

2 is a PCB line acquisition method according to an embodiment of the present invention;

3 is a schematic diagram of drawing a PCB circuit diagram according to an embodiment of the present invention;

4 is a method of repairing a PCB line according to an embodiment of the present invention;

5 is a front and back interface diagram of a PCB circuit diagram according to an embodiment of the present invention;

6 is a connection diagram of a display interface conducting component according to an embodiment of the present invention;

Figure 7 is a functional diagram of an embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

In order to more clearly illustrate the invention, the invention is further described below in conjunction with the drawings.

Referring to FIG. 1 , the present invention discloses a PCB line acquisition method, a PCB line acquisition system, and a PCB line. Maintenance method,

The method includes: a data acquisition unit, a position determination unit, a data transmission unit, a data calibration unit, and a display unit,

Data acquisition unit: acquires the pad line, defines the function of each pad, acquires the parameter information of each component on the line; acquires the physical map file of the corresponding pad line; the data acquisition unit includes the digital bridge, the digital bridge measurement line The parameters of the components on the graph, the data calibration unit stores the parameters to the data storage unit. In this embodiment, the data acquisition unit includes a scanning device and an automatic identification device. The scanning device acquires a picture of the PCB circuit board, and the automatic identification device automatically determines the line information on the PCB circuit board picture, and automatically extracts the line information to generate a PCB. The wiring diagram is passed to the data storage unit for storage. However, the general method of data acquisition preferentially selects the circuit diagram of the PCB already stored in the storage unit, the route diagram of the already stored storage map obtained by the system and the remote server, or the route map file obtained through local uploading. In this embodiment, the communication mode between the system and the remote server is wired communication or wireless communication, and only one communication module needs to be set inside the system.

Data calibration unit: analyze the selected PCB circuit board traces and the parameters of each component, analyze the position information of each pad point, and match the picture and position of the physical map on the circuit diagram, and input the corresponding component model. , parameters; manually select the components connected to the conduction; connect the components connected to each component in series, and save; according to the direction of the components of the circuit diagram, note the pin pad maintenance notes; at the same time, the analysis a corresponding conductive line of the pad on the selected PCB line; matching the corresponding physical map file according to the conduction line and the component parameter; and storing to the data storage unit;

The data acquisition unit comprises a scanning device and an automatic identification device. The scanning device acquires a picture of the PCB circuit board, and the automatic identification device automatically determines the line information on the PCB circuit board picture, and automatically extracts the line information, generates a PCB circuit diagram, and transmits the data to the data. Storage in the storage unit,

In this embodiment, a communication unit is further included, the communication unit is connected to the remote server, and the remote service is read. Server data. The external PCB data can be imported into the PCB line acquisition system through the communication unit, and the communication unit can be a wired communication unit or a wireless communication unit.

In this embodiment, the PCB line acquisition method is as follows: Please refer to FIG. 2,

Manually match the picture and position of the physical map on the circuit diagram, and input the corresponding component model, capacitance and other parameters;

Remark the pin pad maintenance note according to the direction of each component of the circuit diagram;

Storing matching circuit diagrams, physical maps, and parameters of various components on the circuit diagram, and the connection relationship between them, and naming and saving;

Clicking on the component corresponding to the PCB circuit board to be detected, the position determining unit determines the pad corresponding to the work instruction, and analyzes the adjacent line connected by the pad;

The display unit displays the adjacent line and the current state of the pad connection. When the instruction to switch the physical map is detected, the physical object switching operation is performed, and when the parameter viewing instruction is detected, the parameter information is displayed.

In this embodiment, the open circuit of the resistor and capacitor inductive component on the PCB circuit board is measured by the digital bridge on the data acquisition unit, and the actual parameters of the original such as the resistor, capacitor, and inductor, and the information of the line conduction are obtained, and the parameter is stored. To the data storage unit.

In this embodiment, the acquisition of the circuit diagram is connected to the remote server through the communication unit to obtain the route map information published by the manufacturer, or the local upload route map and related parameters, and the relevant parameters on the route map are obtained by manual customization.

In this embodiment, when the PCB circuit diagram of the relevant model cannot be obtained through the communication unit, the PCB circuit diagram needs to be drawn by itself, and the PCB circuit diagram is drawn through the PCB layer by layer analysis. Referring to FIG. 3, the obtaining steps include:

The invention also discloses a method for repairing a PCB line. Referring to FIG. 4, a PCB line maintenance method performed by the PCB line acquisition method and the PCB line acquisition system described above includes the following steps:

According to the model of the PCB to be repaired, select the front and back sides of the PCB pattern of the corresponding model on the MDI dual window interface of the display unit, see FIG. 5;

Clicking on the component, all corresponding components connected to the component are illuminated and connected in series; the unconnected component and the empty pad display a different color than the connected component; see FIG. 6;

Find the corresponding repair location according to the display interface.

The display unit is further provided with a plurality of function keys. Please refer to FIG. 7 , which is a partial function of the present invention. The specific related function keys include:

Refresh: restores the red color of the lighting pad to the original color; enlarges: enlarges the board component and pad size; reduces: reduces the display board component and pad size; fits the screen (F4): enlarges the board Displayed in window size, suitable for window size; fast zoom: can enlarge the board directly to the maximum or reduce to the minimum or specify the zoom size; display / hidden foot (N): display all the empty feet, display the empty feet in blue Pad; display/hidden frame (F): display the border of all components; display/implicit note (B): display and edit custom components, pads, network notes information; display / hidden component picture: display component board Component physical map or a single window physical map in small window; display / hidden bit number: display component name number, pad pin number; display / hidden network: display network name, network point between the trace, network display Wave picture; internal network trace: display surface trace or other internal layer trace; color scheme: configure the color display and magnification of each element of the circuit board and color preset scheme.

Industrial applicability

The invention has the following effects:

1. The system is easy to operate, only need to click on a pin on the corresponding PCB circuit diagram to display all the components connected to it, to assist with maintenance;

2. By clicking on the component, you can also view the corresponding physical map, which is more convenient for judging the position of the component to be repaired;

3. The system interface is simple and clear, and it is convenient for maintenance personnel to quickly inquire the PCB circuit diagram, quickly find the position of the pad components that need to be repaired, and perform accurate maintenance;

4. For PCB boards that do not have ready-made circuit diagrams or circuit diagrams, scan the PCB layout diagram and generate PCB circuit diagrams, which effectively overcomes the problem of difficult line maintenance and slow speed.

Sequence table free content

Those skilled in the art will appreciate that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs, unless otherwise defined. It should also be understood that terms such as those defined in a general dictionary should be understood to have meaning consistent with the meaning in the context of the prior art, and will not be idealized or excessive unless specifically defined as here. The formal meaning is explained.

The above is only a part of the embodiments of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. These improvements and retouchings should also be considered. It is the scope of protection of the present invention.

Claims

A method for acquiring a PCB line, comprising:

The data acquisition unit acquires a circuit diagram of the PCB circuit board and a physical map scan file;

Obtain parameter information of each component on the circuit diagram, and match the circuit diagram with the physical map;

Match the picture and position of the physical map on the circuit diagram, and input the corresponding component model and parameters;

Manually select and connect the components that are connected to them; connect the components connected to each component in series, and save them;

According to the direction of each component of the circuit diagram, the data calibration unit is matched with the PCB circuit diagram and the physical map on the data storage unit, the parameters of each component, the connection relationship between each other, and the note pad repair note;

Store matching line maps, physical maps, and name them, save them;

Recalling the PCB circuit diagram of the PCB to be inspected, detecting whether there is a click command on the transferred PCB circuit diagram, determining the connected pad corresponding to the clicked component pad by the position determining unit, and analyzing the phase of the connected pad Neighboring line

The display unit displays the position of the adjacent component to which the pad is connected and the corresponding remark information.
The method for acquiring a PCB line according to claim 1, wherein the resistor and the capacitor component on the PCB circuit board are open-circuited by a digital bridge on the data acquisition unit, and actual parameters of the original such as the resistor, capacitor, and inductor are obtained, and The line turns on the information and stores the parameters to the data storage unit.
The method for automatically acquiring a PCB line according to claim 1, wherein the acquisition of the circuit diagram is connected to the remote server through the communication unit, and obtains the route map information published by the manufacturer, or the locally uploaded circuit diagram and related parameters, on the circuit diagram. Related parameters are obtained by manual customization.
The method for automatically acquiring a PCB line according to claim 1, wherein the circuit diagram is obtained by layer-by-layer analysis of the PCB, and the obtaining step comprises:

The circuit board components are removed, and the front and back surfaces are scanned by a scanning device;

Grind a layer with sandpaper, scan the device to generate a picture, and then grind one layer and then scan until all layers of the board are scanned; according to the line in the picture, through holes or laser blinds between the layers Buried hole connection

Manually determine the direction of the line and manually enter the parameters of the component.
A PCB line acquisition system, comprising:

The data acquisition unit: acquires a pad line, defines a function of each pad, acquires parameter information of each component on the line, and acquires a physical map file of the corresponding pad line;

Data calibration unit: analyzes the selected PCB circuit board traces and parameters of each component, analyzes the position information of each pad point, and stores it in the data storage unit; analyzes the corresponding conduction of the pad on the selected PCB line a line; matching the corresponding physical map file according to the conduction line and the component parameters;

Position determining unit: obtaining position information of each pad line and component through a data calibration unit, and determining an address of the selected pad and component;

Data storage unit: a circuit diagram for storing a PCB circuit board, line parameter information, and a physical map file;

Display unit: Display the corresponding PCB line and the corresponding physical map through the MDI dual window, and display the conduction line corresponding to the pad.
A PCB line acquisition system according to claim 1, wherein said data acquisition unit comprises a digital bridge, the digital bridge measures parameters of said component, and the data calibration unit stores parameters to the data storage unit.
The PCB line acquisition system according to claim 1, wherein the data acquisition unit comprises a scanning device and an automatic identification device, the scanning device acquires a picture of a PCB circuit board, and the automatic identification device automatically determines the picture on the PCB circuit board. The line information is automatically extracted and the circuit information is automatically generated, and the PCB circuit diagram is generated and transmitted to the data storage unit for storage.
The PCB line acquisition system according to claim 1, further comprising a communication unit that is connected to the remote server and reads data of the remote server.
A method for repairing a PCB line, characterized by the method for acquiring a PCB line according to any one of claims 1 to 4, and the method for repairing a PCB line by the PCB line acquisition system according to claims 5-8, Includes the following steps:

According to the model of the PCB to be repaired, select the PCB layout diagram of the corresponding model on the MDI dual window interface of the display unit;

According to the function of each component on the PCB circuit diagram or the pin pad maintenance note, according to the failure of the PCB to be repaired, find a corresponding component on the interface of the corresponding PCB circuit diagram of the display unit;

Clicking on the component, all corresponding components in communication with the component are illuminated and connected in series; the unconnected component and the empty pad display a different color than the connected component;

Click the corresponding component to view the physical map, component model, and parameters of the component; find the corresponding repair location according to the display interface.
The method of repairing a PCB line according to claim 9, wherein the display unit is further provided with a plurality of function keys, the function keys comprising:

Refresh: restores the red color of the lighting pad to the original color; enlarges: enlarges the board component and pad size; reduces: reduces the display board component and pad size; fits the screen (F4): enlarges the board Displayed in window size, suitable for window size; fast zoom: can enlarge the board directly to the maximum or reduce to the minimum or specify the zoom size; display / hidden foot (N): display all the empty feet, display the empty feet in blue Pad; display/hidden frame (F): display the border of all components; display/implicit note (B): display and edit custom components, pads, network notes information; display / hidden component picture: display component board Component physical map or a single window physical map in small window; display / hidden bit number: display component name number, pad pin number; display / hidden network: display network name, network point between the trace, network display Wave picture; internal network trace: display surface trace or other internal layer trace; color scheme: configure the color display and magnification of each element of the circuit board and color preset scheme.