CN107341298A - Analogue system and method based on circuit diagram image recognition under PC terminals - Google Patents

Abstract

The invention belongs to the field of circuit diagram recognition simulation, and specifically provides a simulation system and method based on PC terminal circuit diagram image recognition. The system includes a mobile terminal and a PC terminal. The mobile terminal includes an image acquisition module, a circuit diagram image recognition module and a transmission module. The acquisition module is used to take pictures and collect the circuit diagram to be simulated, the circuit diagram image recognition module is used to identify the collected circuit diagram and generate the circuit diagram node information network table document according to the relationship between the nodes of the circuit diagram, and the transmission module is used to transfer the circuit diagram node information network table document Transmission to the PC terminal; the PC terminal is used to restore the circuit diagram node information network table document into a simulation circuit diagram, and perform corresponding simulation. The invention simplifies the cumbersome hand-drawn circuit diagram simulation to only need to use a mobile terminal to take pictures, greatly saves time and shortens circuit diagram simulation steps, and is especially suitable for auxiliary teaching in circuit classrooms.

Description

Simulation system and method for circuit diagram image recognition based on PC terminal

technical field

The invention belongs to the field of circuit diagram identification and simulation, and in particular relates to a method for identifying and simulating a circuit diagram on textbook paper and performing simulation under a PC terminal, which involves image recognition, circuit diagram netlist information generation and circuit diagram simulation technology.

Background technique

Circuit diagram simulation plays an important role in many fields such as student teaching, PCB board making, and electrical equipment research and design. However, the current existing circuit diagram simulation system requires users to use circuit diagram simulation software such as Multisim and other software, and drag it in the toolbox of the auxiliary software. Out of the components, and manually draw the connection, and then simulate. The whole process requires user operation; especially the process of finding components in the component library of the auxiliary simulation software, setting device parameters, and connecting lines is time-consuming and laborious, and is not suitable for classroom auxiliary teaching. For this reason, teaching teachers have to advance Be prepared to simulate circuits, and students also specialize in circuit simulation techniques.

Contents of the invention

The purpose of the present invention is to address the deficiencies of the above technologies, and propose a simulation system and method based on circuit diagram image recognition under a PC terminal; compared with the time-consuming and labor-intensive shortcomings of current manual drawing, the present invention can more conveniently and quickly update the existing The circuit diagram is simulated.

To achieve the above object, the technical solution adopted in the present invention is:

A simulation system based on circuit diagram image recognition under a PC terminal, including a mobile terminal and a PC terminal, wherein the mobile terminal includes an image acquisition module, a circuit diagram image recognition module and a transmission module, and the image acquisition module is used to take pictures of the circuit diagram to be simulated, and the circuit diagram The image recognition module is used to identify the collected circuit diagram and generate the circuit diagram node information network table document according to the relationship between the nodes of the circuit diagram, and the transmission module is used to transmit the circuit diagram node information network table file to the PC terminal; the PC terminal is used for The circuit diagram node information network table document is restored to the simulation circuit diagram, and the corresponding simulation is performed.

Further, the network table file of node information in the circuit diagram includes the type of each circuit component, the parameter value of the circuit component, and the connection relationship between each circuit component, wherein the connection relationship is represented by node information.

The simulation method of the above-mentioned simulation system based on the circuit diagram image recognition under the PC terminal comprises the following steps:

Step 1. Use the mobile terminal to collect the image of the circuit diagram to be simulated, and preprocess and segment the collected circuit diagram image, respectively identify the type of each circuit component in the circuit diagram, the parameter value of the circuit component and the connection relationship between each circuit component, according to The relationship between each node in the circuit diagram generates a network table document of the node information in the circuit diagram, and transmits it to the PC terminal;

Step 2. Use the PC terminal to decompile and decode the received circuit diagram node information network table document. The specific process of decompilation and decoding is: according to the connection relationship between each circuit component and the type of each circuit component in the circuit diagram node information network table document , Circuit component parameter value information, select the corresponding components in the simulation platform, and automatically connect to generate the simulated circuit diagram; then use the simulation software to perform simulation verification and view the simulation results.

The beneficial effects of the present invention are:

The invention provides a simulation system and method based on circuit diagram image recognition under a PC terminal, which is used to convert a printed circuit diagram into a simulation under a PC terminal; the system collects and recognizes circuit diagrams through a mobile terminal, and the PC terminal restores and automatically Simulation; simplifies the tedious hand-drawn circuit diagram simulation to only need to use a mobile terminal (such as a mobile phone or a tablet) to take pictures, which greatly saves the user's time and shortens the circuit diagram simulation steps, saving the user from being tedious. It is liberated from the drawing process, improves work efficiency and improves user experience, and is especially suitable for auxiliary teaching in circuit classrooms.

Description of drawings

FIG. 1 is a block diagram of a simulation system based on circuit diagram image recognition under a PC terminal in an embodiment.

Fig. 2 is a schematic flowchart of a method for recognizing a circuit diagram image based on a PC terminal in an embodiment.

Fig. 3 is a schematic flow diagram of decompiling the circuit diagram node information network table document into a simulated circuit diagram in the embodiment.

detailed description

The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings.

This embodiment provides a simulation system based on circuit diagram image recognition under the PC terminal, which solves the current cumbersome process of purely manual copying and drawing of electrical diagrams, and proposes a simple, convenient, and fast intelligent process of copying and drawing electrical diagrams. Or self-set simulation algorithm for simulation, which greatly saves manpower and material resources. While saving time and improving efficiency, it also improves user experience.

In order to enable those skilled in the art to better understand the system solution of the present invention, this embodiment further supplements the present invention with reference to the accompanying drawings:

As shown in Figure 1 is the system block diagram of the present embodiment, is made up of two parts, namely mobile terminal 1, 2, 3 etc. and PC processing terminal 4; Circuit diagram node information documents, etc., and upload the generated circuit diagram node information documents to the PC processing terminal; after receiving the circuit diagram node information documents uploaded by the mobile terminal, the processing terminal generates corresponding circuit diagrams according to the conversion of the given node information parameters, and calls the first Three-party or self-set simulation algorithm for simulation.

As shown in Figure 2, it is a schematic flow chart of this embodiment, and the specific implementation steps are as follows:

Step S21, the mobile terminal collects and uses its own camera to take pictures of the existing circuit diagrams and collect pictures;

Step S22, after the mobile terminal collects the circuit, use image processing to process the collected circuit diagram, and identify basic information such as parameters, symbols, values and circuit node relationships of each component in the circuit diagram;

Step S23, the mobile terminal generates a circuit diagram parameter node information file from the identified information in the circuit diagram;

Step S24, the mobile terminal uses its own transmission function to upload the circuit diagram parameter node information document to the processing terminal, and the uploading methods include but are not limited to WiFi, Bluetooth, third-party document transmission software and chat tools, etc.;

Step S25, processing the PC terminal receiving the circuit diagram node information transmitted from the mobile terminal;

Step S26, the processing PC terminal converts the received circuit diagram node information into the original circuit topology, and supports the simulation function;

Step S27 , the simulation software under the processing PC terminal invokes a third-party circuit simulation algorithm installed by itself or selects a self-set algorithm, and simulates the above-mentioned converted circuit.

As shown in Figure 3, it is a schematic diagram of the decompilation of the circuit diagram node information network table document into a simulation circuit diagram. In an RLC circuit diagram, it is composed of a power supply Vcc, a capacitor C, an inductor L, and a resistor R. The specific connection methods and components The parameter values are shown in the figure; according to the above flow chart process, the specific process of this example is as follows:

1) The mobile terminal (mobile phone, computer) captures the printed circuit diagram, and uses the image processing method to segment and process the collected circuit diagram, and finally recognizes each component, component parameter and connection relationship between components. The relationship is represented by node information;

2) After the above steps, the node information file is generated according to the relative position of each component. In this example, node 1 and node 2 are inductors L, so the generated node information file is shown in Figure 3; The resistor R between node 2 and node 3, the power supply Vcc between node 3 and node 4, and the capacitor C between node 4 and node 1 can be obtained, thus forming a node information file;

3) After the node information document is generated, the mobile terminal transmits the node information document to the PC terminal using WiFi, Bluetooth or other transmission methods;

4) According to the relationship between the components and nodes in the received circuit diagram node information document on the PC side, for example, there is an inductor between node 1 and node 2 in this implementation example, and its attribute value is 0.1mH, so it is in the element of the simulation platform Select an inductor with a value of 0.1mH in the device library and put it into the simulation interface. Similarly, there is a resistor with a value of 10kΩ between node 2 and node 3. Then select the corresponding component from the component library of the simulation platform and Make the attribute values of the components consistent with the attribute values in the circuit diagram node information document;

5) After the simulation circuit diagram is generated according to the node information document, the user can simulate the circuit diagram in the simulation platform to view the simulation results; at the same time, the user can also manually delete or add components in the generated circuit diagram, and the user can modify the corresponding device The attribute value and the positional relationship of each device, etc.

To sum up, the present invention provides a circuit diagram image recognition simulation system. The circuit diagram image recognition simulation system described in the present invention can be applied to the basic circuit teaching of students and companies that often copy and draw circuit diagrams, especially those that need to frequently conduct circuit diagrams. A simulated electrical equipment manufacturing company, as well as a home appliance and mobile phone manufacturing company. Without changing the structure of the original circuit diagram, the present invention can effectively save the user's time for drawing the circuit diagram, greatly save manpower and material resources, improve work efficiency, and improve user experience.

The above is only a specific embodiment of the present invention. Any feature disclosed in this specification, unless specifically stated, can be replaced by other equivalent or alternative features with similar purposes; all the disclosed features, or All method or process steps may be combined in any way, except for mutually exclusive features and/or steps.

Claims (3)

1. based on the analogue system of circuit diagram image recognition under PC terminals, including mobile terminal and PC terminals, wherein, mobile terminal Including image capture module, circuit diagram picture recognition module and transport module, image capture module is used to treat artificial circuit figure Carry out collection of taking pictures, circuit diagram picture recognition module be used for gather circuit diagram is identified and closed according to each node of circuit diagram It is generative circuit node of graph information network table document, transport module is used for the circuit diagram nodal information net list document transmission To PC terminals；The PC terminals are used to circuit diagram nodal information net list document being restored to artificial circuit figure, and are emulated Checking.

2. the analogue system based on circuit diagram image recognition under PC terminals as described in claim 1, it is characterised in that the circuit Node of graph information network table document is included between the type of each circuit components, circuit components parameter value and each circuit components Annexation, wherein annexation are represented with nodal information.

3. the emulation mode based on the analogue system of circuit diagram image recognition under PC terminals as described in claim 1, including it is following Step：

Step 1. treats artificial circuit figure image using mobile terminal collection, and to gather circuit diagram image is pre-processed and divided Cut, connected respectively in identification circuit figure between the type of each circuit components, circuit components parameter value and each circuit components Relation, according to each node relationships generative circuit node of graph information network table document of circuit diagram, and transmit to PC terminals；

Step 2. will receive circuit diagram nodal information net list document using PC terminals and carry out decompiling decoding, decompiling decoding Detailed process be：According to annexation, each circuit elements device between each circuit components in circuit diagram nodal information net list document Type, the circuit components parameter information of part, corresponding component is chosen in emulation platform, and automatic connecting generation is imitated True circuit diagram；Then simulating, verifying is carried out by simulation software, checks simulation result.