Multifunctional and compact servo PCB control board

Abstract

The utility model discloses a multifunctional and compact servo PCB control board which comprises a master control module, a communication interface, an isolation module, a power supply module, a control module, a wireless communication module, a data storage module and a positioning module. The communication interface is connected with the main control module through the isolation module; the isolation module, the power supply module, the control module, the wireless communication module, the data storage module and the positioning module are respectively connected with the main control module. According to the utility model, a plurality of interfaces are integrated, so that a user can flexibly select a suitable communication mode, and the compatibility and adaptability of the system are improved.

Description

Technical Field

[0001] The utility model relates to the field of control, in particular to a multifunctional and compact servo PCB control board. Background Art

[0002] In modern industrial control systems, servo control systems are widely used in automated production lines, radar, robotics, and other fields. However, existing servo control system boards typically have limited functionality and a limited range of interfaces, making them difficult to meet diverse needs. This issue can lead to extended R&D cycles and hinder product project progress. To address this issue, developing a multifunctional, compact servo PCB control board is crucial. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a multifunctional and compact servo PCB control board, including a main control module, a communication interface, an isolation module, a power module, a control module, a wireless communication module, a data storage module and a positioning module;

[0004] The communication interface is connected to the main control module through the isolation module; the isolation module, power module, control module, wireless communication module, data storage module and positioning module are respectively connected to the main control module.

[0005] Preferably, the communication interface includes a serial communication interface, an IO interface, a CAN interface and an encoder communication interface;

[0006] The serial communication interface, IO interface, CAN interface and encoder communication interface are respectively connected to the isolation module.

[0007] Preferably, the serial communication interface includes 2-way RS422 interfaces, 2-way RS232 interfaces, 1-way TTL interface, and 2-way RS485 interfaces;

[0008] The two RS422 interfaces, the two RS232 interfaces, the one TTL interface, and the two RS485 interfaces are connected to the isolation module respectively.

[0009] Preferably, the IO interface includes 3-way PNP input interface and 2-way IO output interface;

[0010] The three-way PNP input interface and the two-way IO output interface are respectively connected to the isolation module.

[0011] Preferably, the CAN interface includes two CAN interfaces, and the two CAN interfaces are respectively connected to the isolation modules.

[0012] Preferably, the encoder communication interface includes two SPI interfaces, and the two SPI interfaces are respectively connected to the isolation modules.

[0013] Preferably, the control module includes a relay controller, and the relay controller is connected to the main control module.

[0014] Preferably, the power supply module includes a power supply interface, a protection module, and a power supply management module; the power supply interface is connected to the protection module, the protection module is connected to the power supply management module, and the power supply management module is connected to the main control module.

[0015] Preferably, the main control module adopts STM32F407VGT6.

[0016] The beneficial effects of the present invention are: by integrating multiple interfaces, users can flexibly select a suitable communication method, thereby improving the compatibility and adaptability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the principle of a multifunctional and compact servo PCB control board;

[0018] Figure 2 This is a schematic diagram of the serial communication interface circuit;

[0019] Figure 3 This is a schematic diagram of the 2-way RS232 interface circuit;

[0020] Figure 4 This is a schematic diagram of the 2-way RS485 interface circuit;

[0021] Figure 5 This is a schematic diagram of a 2-way CAN interface circuit;

[0022] Figure 6 This is a schematic diagram of a 2-way SPI interface circuit;

[0023] Figure 7 This is a schematic diagram of the magnetic bead circuit;

[0024] Figure 8 This is a schematic diagram of the isolation chip circuit. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0026] The features and performance of the present invention are further described in detail below with reference to the embodiments.

[0027] like Figure 1As shown, a multifunctional, compact servo PCB control board includes a main control module, a communication interface, an isolation module, a power module, a control module, a wireless communication module, a data storage module and a positioning module;

[0028] The communication interface is connected to the main control module through the isolation module; the isolation module, power module, control module, wireless communication module, data storage module and positioning module are respectively connected to the main control module.

[0029] The communication interface includes a serial communication interface, an IO interface, a CAN interface and an encoder communication interface;

[0030] The serial communication interface, IO interface, CAN interface and encoder communication interface are respectively connected to the isolation module.

[0031] The serial communication interface includes 2-way RS422 interface, 2-way RS232 interface, 1-way TTL interface, and 2-way RS485 interface;

[0032] The two RS422 interfaces, the two RS232 interfaces, the one TTL interface, and the two RS485 interfaces are connected to the isolation module respectively.

[0033] The IO interface includes 3-way PNP input interface and 2-way IO output interface;

[0034] The three-way PNP input interface and the two-way IO output interface are respectively connected to the isolation module.

[0035] The CAN interface includes two CAN interfaces, and the two CAN interfaces are respectively connected to the isolation modules.

[0036] The encoder communication interface includes two SPI interfaces, and the two SPI interfaces are respectively connected to the isolation modules.

[0037] The control module includes a relay controller, and the relay controller is connected to the main control module.

[0038] The power supply module includes a power supply interface, a protection module, and a power supply management module; the power supply interface is connected to the protection module, the protection module is connected to the power supply management module, and the power supply management module is connected to the main control module.

[0039] The main control module adopts STM32F407VGT6.

[0040] Specifically, the PCB control board in this solution measures 100 x 80 mm and uses the STM32F407VGT6 as the main control chip. Its competitive price and internal Flash storage meet most application requirements. This chip features a high-performance ARM Cortex-M4 core, supports floating-point operations and a DSP instruction set, making it suitable for complex control algorithms and data processing. Furthermore, the STM32F407VGT6 offers a rich set of peripheral interfaces and powerful processing capabilities, meeting the needs of a wide range of application scenarios.

[0041] Specific hardware circuit design

[0042] Serial communication interface:

[0043] 2-way RS422 interface: RS422 is mainly used for long-distance communication and supports high-speed data transmission. It is suitable for industrial automation and remote monitoring systems. The RS422 interface has strong anti-interference ability and can work stably in harsh industrial environments. The servo control board uses the MAX490EESA chip, with a communication rate of up to 2.5Mbps. Combined with the static and surge protection chip TVS tube (TPD2E009DRTR-TP), it can protect the communication chip from static damage. Circuit Figure 2 shown.

[0044] 2-way RS232 interface: used for short-distance communication, commonly used to connect computers and external devices, supporting standard serial communication protocols. RS232 interface is widely used for debugging and data transmission of various devices and has high compatibility. The main communication chip uses MAX232ID, with a maximum data rate of up to 120Kbit / s. Combined with the static and surge protection chip TVS tube (TPD2E009DRTR-TP), the communication chip can be protected from static damage. Circuit diagram Figure 3 shown.

[0045] One TTL interface: Used for low-voltage signal transmission, suitable for communication with microcontrollers, featuring low power consumption and high speed. TTL interfaces are commonly used to connect to sensors and other low-voltage devices, ensuring stable signal transmission. This interface signal is derived from the STM32F407 chip pins and is not present in other devices.

[0046] 2-way RS485 interface: used for multi-point communication, supports data transmission over long distances and in high-noise environments, and is suitable for industrial fieldbus systems. The RS485 interface supports bus connections of up to 32 nodes, suitable for complex industrial control networks. The main communication chip uses the MAX13487EESA, with a communication data rate of up to 500Kbps. Combined with the static and surge protection chip TVS tube (TPD2E009DRTR-TP), the communication chip can be protected from static damage, such as Figure 4 shown.

[0047] IO interface:

[0048] 3-way PNP input interface: used to receive external sensor signals, with high sensitivity and stability, suitable for the connection of various sensors. The PNP input interface can effectively detect the status changes of external devices and provide reliable input signals.

[0049] 2-way IO output interface: used to control external signals to realize the control of devices such as servo brake release, sound and light alarm lights, and external signal lights.

[0050] CAN port:

[0051] 2-way CAN interface: can be used for data communication in industrial automation and servo systems, supports real-time control and high reliability, and is suitable for distributed control systems. The CAN interface has a high communication rate and strong anti-interference ability, and is widely used in the servo and industrial control fields. The main communication chip uses TJA1050T to support CAN bus communication rates up to 1Mbps. Combined with the static and surge protection chip TVS tube (TPD2E009DRTR-TP), it can protect the communication chip from static damage, such as Figure 5 shown.

[0052] Encoder communication interface

[0053] 2-way SPI interface: Currently, encoders with SSI communication are widely used in the servo industry, but the STM32F407 chip does not have an SSI interface. In hardware design, SPI simulation of SSI is required to achieve normal communication between the main control chip and the encoder. The 422 communication chip MAX490EESA is selected as the main communication chip, and the electrostatic and surge protection chip TVS tube (TPD2E009DRTR-TP) is used to protect the communication chip from electrostatic damage. The circuit is as follows Figure 6 shown.

[0054] Control functions:

[0055] Relay Control Interface: Two relay control interfaces are provided for electromagnetic lock and brake release control, supporting high-current load switching. The relay interface enables direct control of external devices and is suitable for various switch control scenarios.

[0056] Supply voltage: Wide voltage range of 18-75V, adaptable to different power supply environments, supporting industrial standard power input. The wide voltage design ensures that the control board can operate stably under different power supply conditions, enhancing the adaptability of the system.

[0057] Signal Isolation: Magnetic beads and the low-cost ISO7221C isolation chip serve as signal isolation devices to isolate signals, reducing costs while improving performance. This ensures electrical isolation between interfaces and enhances the system's anti-interference capabilities. The magnetic bead isolation design effectively prevents interference between power and ground signals, improving system reliability. The low-cost isolation chip electrically isolates the STM32F407 chip from the communication chips.

[0058] Magnetic bead circuit such as Figure 7 As shown; ISO7221C isolation chip circuit is as follows Figure 8 shown.

Claims

1. A multifunctional, compact servo PCB control board, characterized in that: It includes a main control module, a communication interface, an isolation module, a power module, a control module, a wireless communication module, a data storage module and a positioning module; The communication interface is connected to the main control module through the isolation module; the isolation module, power module, control module, wireless communication module, data storage module and positioning module are respectively connected to the main control module.

2. A multifunctional, compact servo PCB control board according to claim 1, characterized in that: The communication interface includes a serial communication interface, an IO interface, a CAN interface and an encoder communication interface; The serial communication interface, IO interface, CAN interface and encoder communication interface are respectively connected to the isolation module.

3. A multifunctional, compact servo PCB control board according to claim 2, characterized in that: The serial communication interface includes 2-way RS422 interface, 2-way RS232 interface, 1-way TTL interface, and 2-way RS485 interface; The two RS422 interfaces, the two RS232 interfaces, the one TTL interface, and the two RS485 interfaces are connected to the isolation module respectively.

4. A multifunctional, compact servo PCB control board according to claim 2, characterized in that: The IO interface includes 3-way PNP input interface and 2-way IO output interface; The three-way PNP input interface and the two-way IO output interface are respectively connected to the isolation module.

5. The multifunctional and compact servo PCB control board according to claim 2, characterized in that: The CAN interface includes two CAN interfaces, and the two CAN interfaces are respectively connected to the isolation modules.

6. The multifunctional and compact servo PCB control board according to claim 2, characterized in that: The encoder communication interface includes two SPI interfaces, and the two SPI interfaces are respectively connected to the isolation modules.

7. The multifunctional and compact servo PCB control board according to claim 1, characterized in that: The control module includes a relay controller, and the relay controller is connected to the main control module.

8. The multifunctional and compact servo PCB control board according to claim 1, characterized in that: The power supply module includes a power supply interface, a protection module, and a power supply management module; the power supply interface is connected to the protection module, the protection module is connected to the power supply management module, and the power supply management module is connected to the main control module.

9. The multifunctional and compact servo PCB control board according to claim 1, characterized in that: The main control module adopts STM32F407VGT6.

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