Light source control system suitable for automatic production line
By introducing industrial bus communication interfaces and processors into the automated production lines, the structure and control process of the light source control system are simplified, the problem of light source control complexity in the existing technology is solved, and more efficient light source parameter adjustment and control is achieved.
Patent Information
- Application Number
- CN202421119612.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The light source control structure in the existing automated production lines has problems such as complex hardware structure and cumbersome control process.
A system including a light source control master station and a plurality of light source control slave stations is designed. The light source control slave station adjusts the light source parameters through an industrial bus communication interface, a processor and a light source driving circuit.
The simultaneous configuration and debugging process of multiple light sources is simplified, the work efficiency is improved, and the demand for additional conversion modules is reduced, and the light source control structure is simplified.
Smart Images
Figure CN222441910U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of light source control, and in particular to a light source control system suitable for an automated production line. Background Art
[0002] With the continuous improvement of various computer technologies and communication technologies, industrial automatic production has further replaced the traditional production model, effectively improving production efficiency and optimizing production quality.
[0003] In the process of industrial automation, light source control technology occupies an important position. A complete automated production line is generally composed of multiple interrelated stations, and various light sources are required in each station to realize the automated process. For example, at the process station, multiple point light sources are required in the sealed cavity to illuminate the chamber to assist the visual sensor in obtaining the operation status of the corresponding mechanical components. For example, at the inspection station, a ring light source or a surface light source is required to perform visual imaging of the product surface to assist image recognition technology in defect detection. And the parameters of each light source need to be set specifically for different product types, as well as the different flow and residence time of the product at each station.
[0004] However, in the prior art, the control method for the numerous and various light sources in an automated production line still adopts a one-to-one point control method, that is, one light source corresponds to one controller. At the same time, the interface of the corresponding light source control system is mostly an IO port or a network port, so when the light source control system is connected to the corresponding automated production line, a corresponding conversion module needs to be added. All these lead to the technical defects of complex hardware structure and cumbersome control process in the light source control of the automated production line. Utility Model Content
[0005] The utility model aims to provide a light source control system suitable for an automated production line to improve the technical problems of complex hardware structure and cumbersome control process existing in the light source control structure of the current automated production line.
[0006] In order to achieve the above purpose, the utility model proposes the following technical solutions:
[0007] In a first aspect, the technical solution provides a light source control system suitable for an automated production line, comprising: a light source control master station, and a plurality of light source control slave stations communicatively connected to the light source control master station; wherein any of the light source control slave stations is a light source controller;
[0008] Any of the light source control slave stations includes an industrial bus communication interface, a processor and a light source driving circuit that are communicatively connected in sequence; wherein the industrial bus communication interface includes a hardware interface, a transformer and a protocol chip that are communicatively connected in sequence, and the hardware interface is communicatively connected to the light source control master station; the light source driving circuit includes a constant voltage light source driving circuit and a constant current light source driving circuit that are arranged in parallel.
[0009] Furthermore, it includes a digital quantity input circuit and a digital quantity output circuit, and the digital quantity input circuit, the processor and the digital quantity output circuit are communicatively connected in sequence.
[0010] Furthermore, it includes a first high-speed isolation circuit and a second high-speed isolation circuit, wherein the input end of the first high-speed isolation circuit is communicatively connected to the digital quantity input circuit, and the output end is communicatively connected to the processor; the input end of the second high-speed isolation circuit is communicatively connected to the processor, and the output end is communicatively connected to the digital quantity output circuit.
[0011] Furthermore, the light source control master station is: a PLC controller, an industrial control panel or a host computer.
[0012] Furthermore, the communication protocols supported by the protocol chip are: EtherCAT communication protocol, ProfiNet communication protocol, CANPEN communication protocol, LonWorks communication protocol, Modbus communication protocol, or CANopen communication protocol.
[0013] Furthermore, the hardware interface is an RJ-45 interface.
[0014] Furthermore, it comprises a third high-speed isolation circuit, wherein the input end of the third high-speed isolation circuit is communicatively connected to the processor, and the output end of the third high-speed isolation circuit is communicatively connected to the light source driving circuit.
[0015] Furthermore, the constant voltage light source driving circuit includes a MOS tube, and an aluminum heat sink and thermal conductive silicone are fixedly provided on the MOS tube.
[0016] Furthermore, the constant current light source driving circuit includes heat dissipation copper disposed on a printed circuit board.
[0017] In a second aspect, the technical solution provides an automated production line, including the light source control system.
[0018] Beneficial effects:
[0019] The present technical solution provides a light source control system to improve some defects existing in the light source control structure in the current automated production line.
[0020] The light source control system includes: a light source control master station, and several light source control slave stations that are connected to the light source control master station in communication. Any of the light source control slave stations includes an industrial bus communication interface, a processor and a light source drive circuit that are connected in sequence; wherein the industrial bus communication interface includes a hardware interface, a transformer and a protocol chip that are connected in sequence in communication, and the hardware interface is connected to the light source control master station in communication; the light source drive circuit includes a constant voltage light source drive circuit and a constant current light source drive circuit that are arranged in parallel. It can be seen that the technical solution introduces the industrial bus into the light source control structure of the automated production line. At this time, during the light source control process, the control signal sent by the light source control master station is forwarded to the processor via the industrial bus control interface, and then transferred to the corresponding light source drive circuit after modulation and processing by the processor to achieve the adjustment of the light source parameters. In this process, due to the participation of the industrial bus, on the one hand, only one light source control master station is needed to realize one-key configuration and debugging of multiple light source control slave stations, which simplifies the complexity of simultaneous configuration and debugging of multiple light sources; on the other hand, the corresponding industrial bus communication interface here is consistent with the interface type of the automated industrial site, and no additional conversion module is required, which further simplifies the light source control structure.
[0021] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.
[0022] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the teachings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:
[0024] Figure 1 This is a schematic diagram of the structure of a light source control system suitable for an automated production line according to this embodiment;
[0025] Figure 2 It is a schematic diagram of the structure of any light source control slave station in the light source control system suitable for an automated production line described in this embodiment. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with general skills in the field to which the utility model belongs.
[0027] The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form of "a", "an" or "the" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0028] Light source control technology is an important part of automated production lines. Specifically, it has a significant impact on the image quality and application effect of the corresponding machine vision system in the automated production line. In a complete automated production line, several, dozens or even hundreds of different types of light source equipment are required, and each light source requires different parameters such as brightness, on time, and off time to be adjusted. Therefore, how to embed the light source control system into the automated production line in a simple and efficient way is a technical difficulty. Based on this, this embodiment aims to propose a light source control system suitable for automated production lines to overcome this technical difficulty.
[0029] The light source control system applicable to an automated production line disclosed in the present utility model will be further specifically introduced below in conjunction with the embodiments shown in the accompanying drawings.
[0030] like Figure 1-2 As shown, it includes: a light source control master station, and a plurality of light source control slave stations that are communicatively connected to the light source control master station. In the implementation process, the light source control master station can be a PLC controller, an industrial control screen or a host computer. In this embodiment, the light source control master station is specifically a PLC controller.
[0031] In the specific communication process, any of the light source control slave stations includes an industrial bus communication interface, a processor and a light source drive circuit that are sequentially connected. Among them, the industrial bus communication interface includes a hardware interface, a transformer and a protocol chip that are sequentially connected, and the hardware interface is connected to the light source control master station; the light source drive circuit includes a constant voltage light source drive circuit and a constant current light source drive circuit that are arranged in parallel. In the specific implementation, the processor includes a main chip, and a clock circuit, a reset circuit and a SWD debugging interface that cooperate with the main chip. For the protocol chip, the communication protocols it supports include: any one of the EtherCAT communication protocol, the ProfiNet communication protocol, the CANPEN communication protocol, the LonWorks communication protocol, the Modbus communication protocol, and the CANopen communication protocol. The communication protocol used in this embodiment is specifically the EtherCAT communication protocol; correspondingly, the model of the protocol chip is: Lan9253. The model of the transformer is: TS8121CMHF. . Further, the hardware interface is specifically an RJ-45 interface.
[0032] During the light source control process, the RJ45 interface receives the control signal (including brightness, intensity, chromaticity and switching time, etc.) configured and issued by the light source control master station (i.e., PLC controller), and the control signal is transmitted to the processor via the RJ-45 interface, the transformer and the protocol chip, and the control signal is processed by the corresponding main chip, reset circuit, clock circuit and SWD debugging interface. Specifically, the model of the main chip in the processor is: GD32F305VET6. At this time, the control signal will be converted into a specific light source control signal after being processed by the processor, and according to the specific light source control type, the constant voltage light source drive circuit or the constant current light source drive circuit will turn on or off the light source at the set time point, and adjust the corresponding parameters to the target parameter value.
[0033] At this time, since the present embodiment introduces the industrial bus into the light source control structure of the automated production line. Therefore, in the light source control process, the control signal sent by the light source control master station is forwarded to the processor via the industrial bus control interface, and then transferred to the corresponding light source drive circuit after modulation and processing by the processor to achieve the adjustment of the light source parameters. In this process, due to the participation of the industrial bus, on the one hand, only one light source control master station is needed to realize one-key configuration and debugging of multiple light source control slave stations, which simplifies the complexity of simultaneous configuration and debugging of multiple light sources; compared with the traditional one-to-one light source control system configuration and control, the work efficiency is greatly improved. On the other hand, the corresponding industrial bus communication interface here is consistent with the interface type of the automated industrial site, and there is no need to add an additional conversion module. Compared with the network port / IO port / serial port of the traditional light source control system, it is easier to embed in the automated control system, that is, it further simplifies the light source control structure.
[0034] As a preferred implementation, this embodiment further provides a corresponding digital communication interface to expand the application mode and application scenario of the light source control system (for example, to implement external triggering signals to control and adjust the light source, and the specific control and adjustment content includes: turning the light source on and off at a set time point). Based on this, specifically, the light source control system also includes a digital quantity input circuit and a digital quantity output circuit, and the digital quantity input circuit, the processor, and the digital quantity output circuit are sequentially connected in communication.
[0035] In specific implementation, when the light source controller is configured to the internal trigger mode, the processor controls the constant voltage light source drive circuit or the constant current light source drive circuit to turn on or off the light source at a set time point according to the configuration information sent by the light source control master station; at the same time, the control signal is output to the digital quantity output circuit at the set time point to trigger the industrial camera to take pictures or control other devices. When the light source controller is configured to the external trigger mode, the digital quantity input circuit receives the external trigger signal, and after the external trigger signal is processed by the corresponding main chip, reset circuit, clock circuit and SWD debugging interface of the processor, according to the specific light source control type, the constant voltage light source drive circuit or the constant current light source drive circuit turns on or off the light source at a set time point; at the same time, the control signal is output to the digital quantity output circuit at the set time point to trigger the industrial camera to take pictures or control other devices.
[0036] As a further implementation, in order to improve the corresponding speed of the above-mentioned corresponding digital quantity circuit, specifically, the light source control system also includes a high-speed isolation circuit. Specifically, the light source control system includes a first high-speed isolation circuit and a second high-speed isolation circuit, the input end of the first high-speed isolation circuit is communicatively connected with the digital quantity input circuit, and the output end is communicatively connected with the processor; the input end of the second high-speed isolation circuit is communicatively connected with the processor, and the output end is communicatively connected with the digital quantity output circuit. At this time, on the one hand, the light source control signal will be sent to the light source driving circuit through the digital quantity input circuit, the first high-speed isolation circuit, and the processor in sequence; on the other hand, it will be transferred to the digital quantity output circuit through the digital quantity input circuit, the first high-speed isolation circuit, the processor, and the second high-speed isolation circuit in sequence.
[0037] Similarly, the light source control system further includes a third high-speed isolation circuit. Specifically, the input end of the third high-speed isolation circuit is communicatively connected to the processor, and the output end is communicatively connected to the light source driving circuit. At this time, the processed light source control signal will first enter the third high-speed isolation circuit, and then control the corresponding light source through the constant current light source driving circuit or the constant voltage light source driving circuit.
[0038] In order to improve the safety of the entire light source control system, the light source control system also includes corresponding heat dissipation components. Specifically, the constant voltage light source driving circuit includes a MOS tube, on which an aluminum heat sink and thermal conductive silicone are fixed. The constant current light source driving circuit includes heat dissipation copper deployed on a printed circuit board. At the same time, the digital input circuit, digital output circuit, constant current light source driving circuit, and constant voltage light source driving circuit are all isolated from the processor using a high-speed isolation chip to further improve the safety of the light source control system.
[0039] Based on the above-mentioned light source control system, this embodiment also provides an automated production line. Specifically, the production line includes the light source control system. In specific implementation, since the automated production line includes the light source control system, it also has the technical advantages of simple hardware structure and convenient control process of the corresponding light source control structure. That is, it simplifies the steps when multiple light source controllers (i.e., multiple light source control slave stations) need to be configured and controlled at the same time, which greatly improves the work efficiency compared with the traditional one-to-one configuration and control of light source controllers. It is easier to embed in the automated control system than the network port / IO port / serial port of the traditional light source controller.
[0040] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.
Claims
1. A light source control system suitable for an automated production line, characterized in that: include: A light source control master station, and a plurality of light source control slave stations communicatively connected to the light source control master station; wherein any of the light source control slave stations is a light source controller; Any of the light source control slave stations includes an industrial bus communication interface, a processor and a light source driving circuit that are communicatively connected in sequence; wherein the industrial bus communication interface includes a hardware interface, a transformer and a protocol chip that are communicatively connected in sequence, and the hardware interface is communicatively connected to the light source control master station; the light source driving circuit includes a constant voltage light source driving circuit and a constant current light source driving circuit that are arranged in parallel.
2. The light source control system suitable for an automated production line according to claim 1, characterized in that: It comprises a digital quantity input circuit and a digital quantity output circuit, wherein the digital quantity input circuit, the processor and the digital quantity output circuit are communicatively connected in sequence.
3. The light source control system suitable for an automated production line according to claim 2, characterized in that: It includes a first high-speed isolation circuit and a second high-speed isolation circuit, wherein the input end of the first high-speed isolation circuit is communicatively connected to the digital quantity input circuit, and the output end is communicatively connected to the processor; the input end of the second high-speed isolation circuit is communicatively connected to the processor, and the output end is communicatively connected to the digital quantity output circuit.
4. The light source control system suitable for an automated production line according to claim 1, characterized in that: The light source control master station is: a PLC controller, an industrial control panel or a host computer.
5. The light source control system suitable for an automated production line according to claim 1, characterized in that: The communication protocols supported by the protocol chip are: EtherCAT communication protocol, ProfiNet communication protocol, CANPEN communication protocol, LonWorks communication protocol, Modbus communication protocol, or CANopen communication protocol.
6. The light source control system suitable for an automated production line according to claim 1, characterized in that: The hardware interface is an RJ-45 interface.
7. The light source control system suitable for an automated production line according to claim 1, characterized in that: A third high-speed isolation circuit is included, wherein the input end of the third high-speed isolation circuit is communicatively connected to the processor, and the output end of the third high-speed isolation circuit is communicatively connected to the light source driving circuit.
8. The light source control system suitable for an automated production line according to claim 1, characterized in that: The constant voltage light source driving circuit comprises a MOS tube, on which an aluminum heat sink and thermal conductive silica gel are fixedly arranged.
9. The light source control system suitable for an automated production line according to claim 1, characterized in that: The constant current light source driving circuit includes heat dissipation copper disposed on a printed circuit board.
10. An automated production line, characterized in that: The light source control system comprises the light source control system according to any one of claims 1 to 9.