一种基于stm32F4系列的工控板卡
By improving the design of the I/O, power supply, and communication modules of the STM32F4 series industrial control boards, the problems of insufficient processing power, single communication interface, and poor stability have been solved, achieving efficient industrial control and multi-protocol support, and improving the stability and scalability of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU ZERO START AUTOMATION CONTROL TECH CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-07-17
AI Technical Summary
The existing STM32F4 series industrial control boards have limited processing capabilities, which cannot meet the needs of complex control algorithms and large data processing. They also have a single communication interface, which cannot adapt to diverse industrial communication environments. Furthermore, they have poor stability and reliability, making it difficult to operate stably in harsh industrial environments.
It adopts a combined design of I/O module, power supply module and communication module. The I/O module includes opto-isolation module and filtering device, the power supply module includes DC/DC module and RC filter module, and the communication module supports CAN, RS422, RS485 and RS232 communication protocols, enhances anti-interference capability and wide temperature operation characteristics, and provides flexible function expansion interface.
It improves the processing power and response speed of industrial control boards, enriches communication interfaces, enhances the scalability and compatibility of the system, ensures stable operation in harsh environments, and reduces failure rate and maintenance costs.
Smart Images
Figure CN224519253U_ABST
Abstract
Claims
1. An industrial control board based on stm32F4 series, characterized in that, It includes an I / O module, a power supply module, and a communication module. The I / O module includes a combination of opto-isolation modules and filtering devices. The input and output of the I / O module are both composed of high-power optocouplers. The power supply module includes a DC / DC module and an RC filter module. The power supply module is equipped with a power conversion circuit. The communication module is equipped with multiple communication channels, including CAN communication circuit, RS422 communication circuit, RS485 communication circuit, and RS232 communication circuit.
2. The industrial control board card based on the stm32F4 series according to claim 1, characterized in that, The I / O module is configured with input / output I / O circuits, including a first optocoupler, a second optocoupler, a third optocoupler, a fourth optocoupler, a fifth optocoupler, a first resistor to an eighteenth resistor, a first capacitor, a second capacitor, and a third capacitor; One end of the first resistor is connected to a switch, and the other end is connected to the input terminal of the first optocoupler and the second resistor respectively. The other end of the second resistor is grounded, and the output terminal of the first optocoupler is connected to the third resistor. One end of the fourth resistor is connected to a switch, and the other end is connected to the input terminal of the second optocoupler and the fifth resistor respectively. The other end of the fifth resistor is grounded, and the output terminal of the second optocoupler is connected to the sixth resistor. The seventh and tenth resistors are connected to the input terminals of the third optocoupler. The tenth resistor is grounded through the fourth capacitor. The output terminal of the third optocoupler is connected to the first capacitor and the eighth resistor. The eighth resistor is connected to the ninth resistor, and the ninth resistor is connected to the first diode. The eleventh and fourteenth resistors are connected to the input terminal of the fourth optocoupler. The fourteenth resistor is grounded through the fifth capacitor. The output terminal of the fourth optocoupler is connected to the second capacitor and the twelfth resistor. The twelfth resistor is connected to the thirteenth resistor, and the thirteenth resistor is connected to the second diode. The fifteenth and eighteenth resistors are connected to the input terminals of the fifth optocoupler. The eighteenth resistor is grounded through the sixth capacitor. The output terminal of the fifth optocoupler is connected to the third capacitor and the sixteenth resistor. The sixteenth resistor is connected to the seventeenth resistor, and the seventeenth resistor is connected to the third diode. 3.The industrial control board card based on stm32F4 series according to claim 2, characterized in that, The power conversion circuit includes a fuse, a voltage regulator, capacitors seven through fourteen, a nineteenth resistor, a twentieth resistor, a power supply unit, a fourth diode, a fifth diode, and a sixth diode; The fuse is connected to a 24V power supply, the sixth diode is connected to a 24V power supply, the sixth diode, the eleventh capacitor and the twelfth capacitor are connected in parallel and then connected to the GND port and VIN port of the power supply unit respectively. The VO- port and VO+ port of the power supply unit are connected to the thirteenth capacitor and the fourteenth capacitor connected in parallel respectively. One end of the twelfth capacitor is connected to the VIN port of the power supply unit and then connected to the twentieth resistor. The twentieth resistor is grounded through the fifth diode. The seventh and eighth capacitors are connected in parallel, with one end connected to the 5V voltage input terminal and the VIN port of the regulator, and the other end grounded. The VOUT port and TAP port of the regulator are connected to the ninth and tenth capacitors, and the ninth and tenth capacitors are grounded. The nineteenth resistor is connected to the 3V voltage input terminal, and the other end is grounded through the fourth diode.
4. The industrial control board card based on stm32F4 series according to claim 1, characterized in that, The CAN communication circuit includes a second chip, a third chip, resistors twenty-first to twenty-fifth, a sixth diode, and a seventh diode; The twenty-first and twenty-second resistors are connected to the OUTA and INB ports of the second chip, respectively. The CANH port and CANL port of the third chip are connected to the twenty-third and twenty-fourth resistors respectively, and the twenty-third and twenty-fourth resistors are connected to the twenty-fifth resistor.
5. An industrial control board based on the STM32F4 series according to claim 1, characterized in that, The RS422 communication circuit includes resistors 26 to 35, diodes 8 to 11, a fourth chip, a fifth chip, and capacitors 15 to 18. The twenty-sixth and twenty-seventh resistors are connected to the OUTA and INB ports of the fourth chip, respectively. The INA and OUTB ports of the fourth chip are connected to the designated ports of the fifth chip, respectively. The two ends of the series connection of the 28th, 29th and 36th resistors are respectively connected to the two ports of the fifth chip, and the 30th and 31st resistors are connected to the two ports of the fifth chip. The seventeenth and eighteenth capacitors are connected to the thirtieth and thirty-first resistors, respectively; Resistors 32 through 35 are connected to diodes 8 through 11, respectively.
6. The industrial control board card based on stm32F4 series according to claim 1, characterized in that, The RS485 communication circuit includes a sixth chip, a seventh chip, resistors thirty-six to forty-second, a twelfth diode, and a thirteenth diode; The 36th and 37th resistors are connected to the OUTA and INB ports of the 6th chip, respectively. The 38th and 39th resistors are connected to the DEA and RO ports of the 7th chip, respectively. The A and B ports of the 7th chip are connected to the 40th and 41st resistors, respectively. The 40th and 41st resistors are both connected to the 42nd resistor. One end of the 12th and 13th diodes is grounded, and the other end is connected to the signal output terminals of Molex RSA485 A1 and Molex RSA485 B1.
7. The industrial control board card based on stm32F4 series according to claim 1, characterized in that, The RS232 communication circuit includes an eighth chip, a ninth chip, a forty-third resistor, a forty-fourth resistor, nineteenth to twenty-second capacitors, a fourteenth diode, and a fifteenth diode; Resistors 43 and 44 are connected to the OUTA and INB ports of chip 8, respectively. The two ends of capacitor 19 are connected to the C1+ and C1- ports of chip 9, respectively. Capacitor 20 is connected to the V+ port of chip 9. Capacitor 21 is connected to the C2+ and C2- ports of chip 9, respectively. Capacitor 22 is connected to the V- port of chip 9. Diodes 14 and 15 are connected to the TX and RX signal terminals of Molex Uart4, respectively.