Multi-sensor control panel based on STM32F429 chip

Abstract

The utility model discloses a multi-sensor control panel based on an STM32F429 chip, which relates to the field of data acquisition and transmission and comprises a power supply module, a serial port communication module, a signal isolation module, a CPU (central processing unit) processing module, a network communication module and a network transformer module. The signal output end of the serial port communication module is electrically connected with the signal input end of a signal isolation module, the signal output end of the signal isolation module is electrically connected with the signal input end of a CPU processing module, and the signal output end of the CPU processing module is electrically connected with a network communication module. And the network communication module is electrically connected with the network transformer module. According to the utility model, data interaction is carried out with an equipment sensor through six RS422 serial ports and two RS232 serial ports, the data transmission efficiency and stability are improved, information transmission is carried out with an external comprehensive control system through one 100M network, the reliability of network communication is improved, and the stability and safety of power supply are ensured through power supply of the dual-power supply module.

Description

Technical Field

[0001] The utility model relates to the field of data acquisition and transmission, and in particular to a multi-sensor control board based on an STM32F429 chip. Background Art

[0002] The multi-sensor control board can be widely installed in various pointers, control boxes and other equipment with compact space and limited external interfaces. It can also adapt to a variety of complex working environments, including but not limited to platforms (sea surface and air) with large temperature differences between day and night and frequent and large vibrations. It is mainly used to collect data from the equipment's own encoders, televisions, infrared, lasers, gyroscopes, and other data, and to control the equipment's attitude. It can also communicate with external integrated control systems or host computers to ensure accurate and fast interaction of various information within the equipment.

[0003] Currently, the majority of multi-sensor control boards commonly used in the market are designed based on an FPGA+DSP architecture. However, due to its high cost and bulk, this architecture has limitations in cost-sensitive applications and demanding installation environments. Furthermore, this architecture is difficult to develop and lacks flexibility in adapting to different projects. Utility Model Content

[0004] In order to solve the above technical problems, a multi-sensor control board based on the STM32F429 chip is provided. This technical solution solves the problems of the architecture proposed in the above background technology, such as high cost and large size, and limitations in cost-sensitive and harsh installation environments. At the same time, this architecture also has the defects of being difficult to develop and having poor flexibility in adapting to different projects in the later stage.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A multi-sensor control board based on an STM32F429 chip, comprising a power module, a serial communication module, a signal isolation module, a CPU processing module, a network communication module, and a network transformer module, wherein the signal output end of the serial communication module is electrically connected to the signal input end of the signal isolation module, the signal output end of the signal isolation module is electrically connected to the signal input end of the CPU processing module, the signal output end of the CPU processing module is electrically connected to the network communication module, and the network communication module is electrically connected to the network transformer module;

[0007] The power supply module is a dual power supply module that supplies power to the chip and communication interface in the multi-sensor control board;

[0008] The power module, serial communication module, signal isolation module, CPU processing module, network communication module and network transformer module are all fixedly installed inside the sealed cavity of the sports equipment. The sealed cavity is airtight to prevent the internal components from being corroded by external water vapor.

[0009] The sealed cavity is designed with a sealed socket for outputting processed data and inputting power supply.

[0010] Preferably, the serial communication module includes 6 RS422 serial port circuits and 2 RS232 serial port circuits. The multi-sensor control board interacts with data through 6 RS422 serial port circuits and 2 RS232 serial port circuits, and transmits control instructions and equipment status information with the external integrated control system through 1 100M network.

[0011] Preferably, the DC12V of the power module is electrically connected to pins 1 and 2 of the J1 chip through the fuse F2, and pins 3 and 4 of the chip J1 are electrically connected and grounded. The power module is powered by a dual power module, integrating a U13 chip and a U16 chip. Pins 1 and 7 of the U13 chip are grounded, and pin 4 of the U13 chip is electrically connected to a DC12V voltage. Pin 5 of the U13 chip is used for a DC5V voltage. Pins 1 and 7 of the U16 chip are grounded, and pin 4 of the U16 chip is electrically connected to a DC12V voltage input. Pin 5 of the U16 chip is used to output a DC5V voltage.

[0012] Preferably, the CPU processing module includes a U1 chip, which includes 8 synchronous asynchronous transceivers and 1 100M MAC. The U1 chip converts the TTL level into a serial port of different standard protocols through a level conversion chip. The level conversion chip includes a U9 chip, a U10 chip, a U11 chip, a U12 chip, a U14 chip, a U15 chip, a U18 chip, a U19 chip, a U20 chip and a U21 chip.

[0013] Preferably, the network communication module includes a U3 chip, the 2nd and 3rd pins of the U3 chip are respectively connected in series with resistor R28 and resistor R27, and the common end of the 2nd and 3rd pins of the U3 chip is grounded, the 4th and 5th pins of the U3 chip are connected in series with capacitor C21 and capacitor C22 and grounded, the 4th and 5th pins of the U3 chip are connected in parallel with resistor R30 and capacitor Y2, the 6th pin of the U3 chip is electrically connected to capacitor C17 and grounded, and the 20th, 21st, 22nd and 23rd pins of the U3 chip are pulled up to 3.3V through resistors R22, R21, R25 and R23.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model proposes a multi-sensor control board based on the STM32F429 chip. The board interacts with a variety of sensors inside and outside the device through 6 RS422 serial ports and 2 RS232 serial ports, thereby improving data transmission efficiency and stability. The board transmits control instructions and device status information with an external integrated control system through a 100M network, thereby improving network communication reliability. The electrical interface is isolated and dual power modules are used for power supply, with one channel supplying power to the chip inside the board and the other supplying power to the communication interface, thereby ensuring the stability and safety of the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural block diagram of a multi-sensor control board based on the STM32F429 chip proposed in this utility model;

[0017] Figure 2 This is the circuit diagram of the power module in this utility model;

[0018] Figure 3 This is a circuit diagram of the serial port circuit of chip U14 in the serial port communication module of the present utility model;

[0019] Figure 4 This is the circuit diagram of the network communication module in this utility model. DETAILED DESCRIPTION

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0021] Reference Figure 1 As shown, a multi-sensor control board based on the STM32F429 chip in an embodiment of the present invention includes a power module, a serial communication module, a signal isolation module, a CPU processing module, a network communication module and a network transformer module, the signal output end of the serial communication module is electrically connected to the signal input end of the signal isolation module, the signal output end of the signal isolation module is electrically connected to the signal input end of the CPU processing module, the signal output end of the CPU processing module is electrically connected to the network communication module, and the network communication module is electrically connected to the network transformer module;

[0022] The power module supplies power to the dual power module, which is used to power the chips and communication interfaces in the multi-sensor control board;

[0023] The power module, serial communication module, signal isolation module, CPU processing module, network communication module, and network transformer module are all fixedly installed inside the sealed cavity of the sports equipment. The sealed cavity is designed to be airtight to prevent the internal components from being corroded by external moisture intrusion.

[0024] The sealed cavity is designed with a sealed socket for processed data output and power supply input;

[0025] The serial communication module includes 6-channel RS422 serial port circuits and 2-channel RS232 serial port circuits. The multi-sensor control board exchanges data through the 6-channel RS422 serial port circuits and the 2-channel RS232 serial port circuits, and transmits control instructions and equipment status information with the external integrated control system through a 100M network;

[0026] Reference Figure 2 As shown, the multi-sensor control board interacts with the outside world through serial lines and network cables for data. To ensure the electrical safety of the entire system, all electrical interfaces are isolated during design. A dual power supply module is used for power supply, one for the chip inside the board and the other for the communication interface. In this solution, the DC12V of the power module is electrically connected to the 1st and 2nd pins of the J1 chip through the fuse F2, and the 3rd and 4th pins of the chip J1 are electrically connected and grounded. The power module is powered by a dual power module and integrates the U13 chip and the U16 chip. The 1st and 7th pins of the U13 chip are grounded, and the 4th pin of the U13 chip is electrically connected to the DC12V voltage. The 5th pin of the U13 chip is used for the DC5V voltage. The 1st and 7th pins of the U16 chip are grounded, and the 4th pin of the U16 chip is electrically connected to the DC12V voltage input. The 5th pin of the U16 chip is used to output the DC5V voltage.

[0027] The CPU processing module includes the U1 chip, which includes 8 synchronous asynchronous transceivers and a 100M MAC. The U1 chip converts the TTL level into serial ports with different standard protocols through the level conversion chip. The level conversion chips include the U9 chip, U10 chip, U11 chip, U12 chip, U14 chip, U15 chip, U18 chip, U19 chip, U20 chip and U21 chip.

[0028] It can be understood that in this embodiment, the CPU processing module is integrated with the chip STM32F429IGT6. The chip STM32F429IGT6 is a mid-to-high-end chip of STMicroelectronics. The chip main frequency can reach 180Mhz, and it has 8 synchronous asynchronous receivers and transmitters (USART) and 1 100M network MAC. The serial port only needs an external level conversion chip to convert the TTL level into a serial port with different standard protocols. The network can be connected to the external PHY chip and network transformer through RGMII for network communication. In order to meet the diversity and reliability of the serial port with external communication, this design adopts the combination of ADUM1402+MAX488 chips to realize 6-way isolated RS422 communication, and the baud rate can reach 0.25Mbps. ADUM1402+MAX232 realizes 2-way isolated RS232 communication, and the baud rate can reach 0.12Mbps. Taking the serial port circuit of the U14 chip as an example, refer to Figure 3 As shown in the figure, by converting the TTL level into serial ports of different standard protocols, the feasibility of connecting the multi-sensor control board with different types of external communications is realized;

[0029] Reference Figure 4 As shown, the network communication module includes a U3 chip, the 2nd and 3rd pins of the U3 chip are respectively connected in series with resistors R28 and R27, and the common ends of the 2nd and 3rd pins of the U3 chip are grounded, the 4th and 5th pins of the U3 chip are connected in series with capacitors C21 and C22 and are grounded, the 4th and 5th pins of the U3 chip are connected in parallel with resistor R30 and capacitor Y2, the 6th pin of the U3 chip is electrically connected to capacitor C17 and is grounded, and the 20th, 21st, 22nd and 23rd pins of the U3 chip are pulled up to 3.3V through resistors R22, R21, R25 and R23.

[0030] It can be understood that the U3 chip in this embodiment is specifically the LAN8720A. The chip LAN8720A is a low-power 10 / 100M Ethernet PHY layer chip. The I / O pin voltage complies with the IEEE802.3-2005 standard, supports communication with the Ethernet MAC layer through the RMII interface, and has a built-in 10-BASE-T / 100BASE-TX full-duplex transmission module that supports 10Mbps and 100Mbps.

[0031] The LAN8720A chip can automatically negotiate the best connection mode (speed and duplex mode) with the destination host, supports HP Auto-MDIX automatic flipping function, and can change the connection to direct or cross connection without changing the network cable, and transmit network data through LWIP on the software.

[0032] To sum up, the advantages of the present invention are: data interaction with various sensors inside and outside the device is carried out through 6 RS422 serial ports + 2 RS232 serial ports, thereby improving data transmission efficiency and stability; control instructions and equipment status information are transmitted with an external integrated control system through 1 100M network, thereby improving network communication reliability; by isolating the electrical interface and adopting a dual power supply module, one channel supplies power to the chip on the board and the other supplies power to the communication interface, thereby ensuring the stability and safety of the power supply.

[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-sensor control board based on STM32F429 chip, characterized in that: It includes a power supply module, a serial communication module, a signal isolation module, a CPU processing module, a network communication module and a network transformer module, wherein the signal output end of the serial communication module is electrically connected to the signal input end of the signal isolation module, the signal output end of the signal isolation module is electrically connected to the signal input end of the CPU processing module, the signal output end of the CPU processing module is electrically connected to the network communication module, and the network communication module is electrically connected to the network transformer module; The power supply module is a dual power supply module that supplies power to the chip and communication interface in the multi-sensor control board; The power module, serial communication module, signal isolation module, CPU processing module, network communication module and network transformer module are all fixedly installed inside the sealed cavity of the sports equipment. The sealed cavity is airtight to prevent the internal components from being corroded by external water vapor. The sealed cavity is designed with a sealed socket for outputting processed data and inputting power supply.

2. A multi-sensor control board based on STM32F429 chip according to claim 1, characterized in that, The serial communication module includes 6 RS422 serial port circuits and 2 RS232 serial port circuits. The multi-sensor control board exchanges data through the 6 RS422 serial port circuits and the 2 RS232 serial port circuits, and transmits control instructions and equipment status information with the external integrated control system through a 100M network.

3. A multi-sensor control board based on STM32F429 chip according to claim 1, characterized in that, The DC12V of the power module is electrically connected to pins 1 and 2 of the J1 chip through fuse F2, and pins 3 and 4 of the chip J1 are electrically connected and grounded. The power module is powered by a dual power module and integrates a U13 chip and a U16 chip. Pins 1 and 7 of the U13 chip are grounded, and pin 4 of the U13 chip is electrically connected to a DC12V voltage. Pin 5 of the U13 chip is used for a DC5V voltage. Pins 1 and 7 of the U16 chip are grounded, and pin 4 of the U16 chip is electrically connected to a DC12V voltage input. Pin 5 of the U16 chip is used to output a DC5V voltage.

4. A multi-sensor control board based on STM32F429 chip according to claim 1, characterized in that, The CPU processing module includes a U1 chip, which includes 8 synchronous asynchronous transceivers and 1 100M network MAC. The U1 chip converts the TTL level into a serial port with different standard protocols through a level conversion chip. The level conversion chip includes a U9 chip, a U10 chip, a U11 chip, a U12 chip, a U14 chip, a U15 chip, a U18 chip, a U19 chip, a U20 chip and a U21 chip.

5. A multi-sensor control board based on STM32F429 chip according to claim 1, characterized in that, The network communication module includes a U3 chip, the 2nd and 3rd pins of the U3 chip are respectively connected in series with resistors R28 and R27, and the common end of the 2nd and 3rd pins of the U3 chip is grounded, the 4th and 5th pins of the U3 chip are connected in series with capacitors C21 and C22 and grounded, the 4th and 5th pins of the U3 chip are connected in parallel with resistor R30 and capacitor Y2, the 6th pin of the U3 chip is electrically connected to capacitor C17 and grounded, and the 20th, 21st, 22nd and 23rd pins of the U3 chip are pulled up to 3.3V through resistors R22, R21, R25 and R23.

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