ECU controller circuit

Abstract

The utility model discloses an ECU (Electronic Control Unit) controller circuit, which comprises a signal input / output connector, an RS485 communication connector, a 5V voltage conversion circuit, a 3.3 V voltage conversion circuit, a data storage circuit, a 3.3 V level signal conversion circuit, a voltage signal conversion circuit, an RS485 communication circuit and a microcontroller, one end of the 3.3 V level signal conversion circuit and one end of the voltage signal conversion circuit are connected with the microcontroller, the other end of the 3.3 V level signal conversion circuit and the other end of the voltage signal conversion circuit are connected with the signal input and output connector, the 24V power supply is connected with the 5V voltage conversion circuit, the 5V voltage conversion circuit is connected with the 3.3 V voltage conversion circuit, the 3.3 V voltage conversion circuit is connected with the microcontroller, and the signal input and output connector is connected with the microcontroller. And the microcontroller is connected with the data storage circuit. The sensor and the actuator input data signals from the connector interface, the data signals are converted and transmitted to the microcontroller to be judged and processed, and finally execution data are transmitted back through the communication circuit, so that the function of automatic control is achieved.

Description

Technical Field

[0001] The utility model relates to an ECU controller circuit. Background Art

[0002] ECUs play a vital role in industrial automation. They control a wide range of equipment, including machine tools, conveyor belts, hydraulic and pneumatic systems, and industrial robots. Equipped with appropriate sensors and actuators, ECUs monitor the status and performance of these devices in real time and precisely control them based on pre-defined algorithms and control logic.

[0003] With the continuous development of the automation industry, the number and complexity of ECUs are also increasing, requiring the redesign and optimization of ECU controller circuits. Summary of the Invention

[0004] In order to solve the problem of stable voltage and signal output, the utility model needs to provide an ECU controller circuit to convert the acquired digital signal into an analog signal.

[0005] The utility model provides the following technical solutions:

[0006] An ECU controller circuit includes a signal input / output connector, an RS485 communication connector, a 5V voltage conversion circuit, a 3.3V voltage conversion circuit, a data storage circuit, a 3.3V level signal conversion circuit, a voltage signal conversion circuit, an RS485 communication circuit, and a microcontroller. The RS485 communication connector is connected to the microcontroller via the RS485 communication circuit. One end of the 3.3V level signal conversion circuit and the voltage signal conversion circuit are connected to the microcontroller. The other ends of the 3.3V level signal conversion circuit and the voltage signal conversion circuit are connected to the signal input / output connector. The 24V power supply is connected to the 5V voltage conversion circuit. The 5V voltage conversion circuit is further connected to the 3.3V voltage conversion circuit. The 3.3V voltage conversion circuit is connected to the microcontroller. The microcontroller is connected to the data storage circuit.

[0007] Furthermore, the signal input and output connector uses terminal J3, ECUEN and ZS on terminal J3 are input signals; ECUERR and ECUBC are output signals; I1, I2, I3, I4, and I5 are 5-way transmitter input signals.

[0008] Furthermore, the RS485 communication connector adopts terminal J2, and the terminal J2 is a 6-way RS485 communication interface.

[0009] Furthermore, the 5V voltage conversion circuit includes a power module, a port J1 and a fuse F1. The Vin end of the power module is connected to pin 1 of the port J1 through the fuse F1, the GND of the power module is connected to a 24V power supply, and the +Vo end of the power module outputs 5V through a capacitor circuit.

[0010] Furthermore, the 3.3V voltage conversion circuit includes a voltage regulator, which is used to reduce the voltage of the 5V power supply to 3.3V.

[0011] Furthermore, the data storage circuit includes a memory chip U7, and the model of the memory chip U7 is 24C02.

[0012] Furthermore, the 3.3V level signal conversion circuit includes an optocoupler IC1 and an optocoupler IC2, the third pin of the optocoupler IC1 is connected to the third pin of the optocoupler IC2, and the 1st and 2nd pins of the optocoupler IC1 and the optocoupler IC2 are connected to the RS485 communication circuit, and the optocoupler IC1 and the optocoupler IC2 are used to convert the DI signal of the external digital input into a 3.3V level signal.

[0013] Furthermore, the voltage signal conversion circuit uses a TExxxxN series active isolation module to collect current signals and convert them into voltage signals for sampling by the ADC of the microcontroller MCU.

[0014] Furthermore, the RS485 communication circuit uses an isolation transceiver TD301M485 for data acquisition.

[0015] Furthermore, the microcontroller adopts the STM32F407ZET6 model.

[0016] Compared with the existing technology, the beneficial effects of the present invention are: redesign and optimization of the ECU controller circuit, including signal input and output connectors, RS485 communication connectors, 5V voltage conversion circuits, 3.3V voltage conversion circuits, data storage circuits, 3.3V level signal conversion circuits, voltage signal conversion circuits, RS485 communication circuits and microcontrollers. The configured sensors and actuators input data signals from the connector interface, undergo signal conversion, and transmit them to the microcontroller for judgment and processing. Finally, the execution data is returned through the communication circuit, thereby achieving the function of automatic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram of the signal input and output connector of this utility model.

[0018] Figure 2 This is a diagram of the RS485 communication connector of this utility model.

[0019] Figure 3 This is the 5V voltage conversion circuit diagram of the utility model.

[0020] Figure 4 This is the 3.3V voltage conversion circuit diagram of the utility model.

[0021] Figure 5 This is a data storage circuit diagram of the utility model.

[0022] Figure 6 This is the 3.3V level signal conversion circuit diagram of the utility model.

[0023] Figure 7 This is the voltage signal conversion circuit diagram of the utility model.

[0024] Figure 8 This is the RS485 communication circuit diagram of this utility model.

[0025] Figure 9 This is a workflow diagram of the present utility model.

[0026] Figure 10 This is the circuit diagram of the microcontroller of this utility model.

[0027] 1. RS485 communication connector, 2. RS485 communication circuit, 3. Signal input and output connector, 4. 3.3V level signal conversion circuit, 5. Voltage signal conversion circuit, 6. Microcontroller, 7. 3.3V voltage conversion circuit, 8. 5V voltage conversion circuit, 9. 24V power supply, 10. Data storage circuit. Implementation Method

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 9An ECU controller circuit of the present invention includes a signal input and output connector 3, an RS485 communication connector 1, a 5V voltage conversion circuit 8, a 3.3V voltage conversion circuit 7, a data storage circuit 10, a 3.3V level signal conversion circuit 4, a voltage signal conversion circuit 5, an RS485 communication circuit 2 and a microcontroller 6. The RS485 communication connector 1 is connected to the microcontroller 6 through the RS485 communication circuit 2, one end of the 3.3V level signal conversion circuit 4 and the voltage signal conversion circuit 5 is connected to the microcontroller 6, and the other end of the 3.3V level signal conversion circuit 4 and the voltage signal conversion circuit 5 is connected to the signal input and output connector 3, a 24V power supply is connected to the 5V voltage conversion circuit 8, the 5V voltage conversion circuit 8 is further connected to the 3.3V voltage conversion circuit 7, the 3.3V voltage conversion circuit 7 is connected to the microcontroller 6, and the microcontroller 6 is connected to the data storage circuit 10.

[0030] The configured sensors and actuators input data signals from the connector interface, which are then converted and transmitted to the microcontroller for judgment and processing. Finally, the execution data is sent back through the communication circuit, thereby achieving the function of automatic control.

[0031] Figure 1 This is the signal input and output connector diagram. Figure 1 ECUEN and ZS on terminal J3 are input signals; ECUERR and ECUBC are output signals; I1, I2, I3, I4, and I5 are 5-way transmitter input signals.

[0032] Figure 2 This is the RS485 communication connector diagram. Figure 2 Terminal J2 is a 6-way RS485 communication interface. Many sensors and actuators need to transmit data through the RS485 communication interface.

[0033] Figure 3 This is a 5V voltage conversion circuit diagram. The 5V voltage conversion circuit includes a power module, port J1 and fuse F1. The Vin end of the power module is connected to pin 1 of port J1 through fuse F1. The GND end of the power module is connected to a 24V power supply. The +Vo end of the power module outputs 5V through a capacitor circuit.

[0034] Figure 3 Pin 2 of the middle port J1 is connected to the 24V power input, and pin 1 of the port J1 is protected by an F12A fuse. A power module (model: URB_YMD-6WR3) is used to step down the 24V to 5V.

[0035] The URB_YMD-6WR3 power module has a wide operating temperature range, from -40°C to +85°C. It can also cut off power or adjust output in a timely manner if any equipment anomalies occur.

[0036] Figure 4 In the 3.3V voltage conversion circuit, a voltage regulator (model: LM1805) is used to step down the 5V power supply to 3.3V.

[0037] The LM1805 electronic component is used to convert the isolated DC power supply to 3.3V as the system's operating power supply. This conversion process ensures that the system can obtain a stable and qualified voltage input, thereby improving the stability and reliability of the entire system.

[0038] Figure 5 It is a data storage circuit. Figure 5 Use the memory chip U7 (model: 24C02) and the 24C02 EEPROM memory chip to store data, save configuration information, etc.

[0039] The 24C02 EEPROM memory chip is non-volatile, meaning the data stored in it will not be lost even if the device is powered off. It also has the advantages of large capacity, low power consumption, and high reliability.

[0040] Figure 6 This is a 3.3V level signal conversion circuit diagram, including optocoupler IC1 and optocoupler IC2. Pin 3 of optocoupler IC1 is connected to pin 3 of optocoupler IC2, and pins 1 and 2 of optocoupler IC1 and IC2 are connected to the RS485 communication circuit.

[0041] Figure 6 In the circuit, the optical coupler PC817 is used to convert the external digital input DI signal into a 3.3V level signal (a signal that can be used by the microcontroller MCU).

[0042] Figure 7 In the voltage signal conversion circuit diagram, the TexxxxN series active isolation module is used to collect current signals and convert them into voltage signals for sampling by the microcontroller ADC. (This design circuit uses multiple active isolation modules to achieve signal conversion.)

[0043] The TexxxxN series active isolation module features a front-end voltage / current signal input and a back-end voltage signal output. Embedded within the module is a high-efficiency micropower supply that simultaneously supplies power to the internal signal processing circuitry and outputs isolated power to peripheral circuits. Due to its internal electromagnetic isolation technology, it exhibits superior temperature drift characteristics and linearity compared to optocoupler isolation.

[0044] Figure 8 This is the RS485 communication circuit diagram. Figure 8In the test, the isolated transceiver TD301M485 (RS485 isolated transceiver module) is used for data acquisition, mainly to realize the communication function.

[0045] Using TD301M485 (RS-485 isolation transceiver module), it also has a wide operating temperature range and high integration, realizing power isolation, signal isolation, RS-485 communication and bus protection in one.

[0046] Figure 10 As shown, the microcontroller (model: STM32F407ZET6) is used. This microcontroller has an ADC function and a built-in 19-channel ADC module. It also integrates a variety of peripheral interfaces, such as USB, CAN, SPI, I2C, and USART, covering nearly all communication protocols commonly used in embedded system development. It can easily connect to various external devices to achieve data transmission and interaction.

[0047] The configured sensors and actuators input data signals from the connector interface, which are then converted and transmitted to the microcontroller for judgment and processing. Finally, the execution data is sent back through the communication circuit, thereby achieving the function of automatic control.

[0048] The utility model can be used in industrial automation. By equipping corresponding sensors and actuators, such as temperature sensors and solenoid valves, the ECU can monitor the status and performance of the solenoid valves in real time and accurately control the solenoid valves based on the collection and measurement of sensor data according to preset algorithms and control logic.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ECU controller circuit, characterized in that: The invention comprises a signal input / output connector (3), an RS485 communication connector (1), a 5V voltage conversion circuit (8), a 3.3V voltage conversion circuit (7), a data storage circuit (10), a 3.3V level signal conversion circuit (4), a voltage signal conversion circuit (5), an RS485 communication circuit (2) and a microcontroller (6), wherein the RS485 communication connector (1) is connected to the microcontroller (6) via the RS485 communication circuit (2), one end of the 3.3V level signal conversion circuit (4) and the voltage signal conversion circuit (5) are connected to the microcontroller (6), the other end of the 3.3V level signal conversion circuit (4) and the voltage signal conversion circuit (5) are connected to the signal input / output connector (3), a 24V power supply is connected to the 5V voltage conversion circuit (8), the 5V voltage conversion circuit (8) is further connected to the 3.3V voltage conversion circuit (7), the 3.3V voltage conversion circuit (7) is connected to the microcontroller (6), and the microcontroller (6) is connected to the data storage circuit (10).

2. The ECU controller circuit according to claim 1, characterized in that: The signal input and output connector uses terminal J3, ECUEN and ZS on terminal J3 are input signals; ECUERR and ECUBC are output signals; I1, I2, I3, I4, and I5 are 5-way transmitter input signals.

3. The ECU controller circuit according to claim 1, characterized in that: The RS485 communication connector uses terminal J2, and the terminal J2 is a 6-way RS485 communication interface.

4. The ECU controller circuit according to claim 1, characterized in that: The 5V voltage conversion circuit includes a power module, a port J1 and a fuse F1. The Vin terminal of the power module is connected to pin 1 of the port J1 through the fuse F1. The GND terminal of the power module is connected to a 24V power supply. The +Vo terminal of the power module outputs 5V through a capacitor circuit.

5. The ECU controller circuit according to claim 1, characterized in that: The 3.3V voltage conversion circuit includes a voltage regulator, which is used to reduce the voltage of a 5V power supply to 3.3V.

6. The ECU controller circuit according to claim 1, characterized in that: The data storage circuit includes a memory chip U7, and the model of the memory chip U7 is 24C02.

7. The ECU controller circuit according to claim 1, characterized in that: The 3.3V level signal conversion circuit includes an optocoupler IC1 and an optocoupler IC2. The third pin of the optocoupler IC1 is connected to the third pin of the optocoupler IC2. The 1st and 2nd pins of the optocoupler IC1 and the optocoupler IC2 are connected to the RS485 communication circuit. The optocoupler IC1 and the optocoupler IC2 are used to convert the DI signal of the external digital input into a 3.3V level signal.

8. The ECU controller circuit according to claim 1, characterized in that: The voltage signal conversion circuit uses the TExxxxN series active isolation module to collect current signals and convert them into voltage signals for sampling by the ADC of the microcontroller MCU.

9. The ECU controller circuit according to claim 1, characterized in that: The RS485 communication circuit uses the isolation transceiver TD301M485 for data acquisition.

10. The ECU controller circuit according to claim 1, characterized in that: The microcontroller adopts the STM32F407ZET6 model.

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