Intelligent regulator based on CAN communication

Abstract

The invention discloses an intelligent regulator based on CAN communication, which comprises a rotating speed module, a power module, a power supply module, a CAN communication module and an MCU chip, and is characterized in that the MCU chip is a main control chip, and the model of the MCU chip is MCUFS32K; the rotating speed module is provided with an IC2, and the model of the rotating speed module is LM2904; the power module is provided with an IC3, and the model of the power module is AD8397; the power supply module is provided with an IC5, and the model of the IC5 is ADP7; the CAN communication module is provided with an IC1, and the model of the IC1 is SN65; the MCU chip is connected with the rotating speed module, the power module, the power supply module and the CAN communication module. The invention has the following beneficial effects: 1, the scheme of discrete devices is used, the function is reliable, and the withstand voltage level of the product can be adjusted according to the demand of the whole vehicle; 2, a double-line structure is adopted, and communication among a plurality of nodes is supported; 3, the communication rate is high, a plurality of nodes are allowed to serve as a host, and the method is suitable for an engine system needing high performance and complex communication.

Description

Technical Field

[0001] The invention relates to the technical field of automobile regulators, in particular to an intelligent regulator based on CAN communication. Background Art

[0002] The function of the generator is to provide power to the electrical equipment of the vehicle. The automotive generator regulator is an important part of the automotive AC generator. The quality of the regulator is related to the power supply quality of the vehicle power system. The regulator has two main functions: one is to make the generator generate electricity; the other is to stabilize the voltage of the generator.

[0003] Existing intelligent voltage regulators are mainly based on LIN control. LIN is a one-master-multiple-slave structure and cannot achieve communication between multiple nodes. Therefore, regulators based on LIN control have the following disadvantages:

[0004] 1. The whole vehicle is based on the CAN bus, and some car companies are unwilling to add a LIN communication module;

[0005] 2. LIN is a single-line structure, the communication is not stable enough and is easily interfered by the outside world;

[0006] 3. LIN communication transmission rate is low;

[0007] 4. Can only be used to complete relatively simple control tasks;

[0008] 5. Single chip solution, low voltage resistance.

[0009] Therefore, an intelligent regulator based on CAN communication is proposed. Summary of the invention

[0010] The purpose of the present invention is to provide an intelligent regulator based on CAN communication, which uses a discrete component solution, retains the flexibility of product hardware design, and can meet the needs of different car companies for the functions of intelligent regulators based on CAN communication, and solves the disadvantages of the existing LIN communication single-line structure and unstable communication. At the same time, it has the advantages of high transmission rate and communication between multiple nodes, and adopts a discrete component solution, which can adjust the product's withstand voltage level according to the needs of the whole vehicle.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] A CAN communication-based intelligent regulator, comprising a speed module, a power module, a power supply module, a CAN communication module and an MCU chip, wherein the MCU chip is a main control chip, and its model is MCUFS32K;

[0013] The speed module is provided with IC2, whose model is LM2904;

[0014] The power module is provided with IC3, whose model is AD8397;

[0015] The power module is provided with IC5, whose model is ADP7;

[0016] The CAN communication module is provided with IC1, whose model is SN65;

[0017] The MCU chip is respectively connected to the speed module, the power module, the power supply module and the CAN communication module.

[0018] Further, the speed module includes resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, capacitor C2, capacitor C6, resistor R9, capacitor C11, capacitor C6 of pin 5 of IC2, capacitor C6 is connected to capacitor C11 and resistor R9, and resistor R9 is connected to resistor R12 and MCU chip;

[0019] Pin 7 of the IC2 is connected to a resistor R5, the resistor R5 is connected to resistors R3 and R6, and the resistor R3 is connected to a capacitor C4 and an MCU chip;

[0020] Pin 1 of the IC2 is connected to a resistor R1, and the resistor R1 is connected to a capacitor C2 and an MCU chip.

[0021] Furthermore, the resistor R9, the capacitor C6 and the capacitor C11 form a high- and low-pass circuit for filtering the noise at the phase end of the generator.

[0022] Further, the power module includes a resistor R13, a resistor R15, a resistor R16, a resistor R18, a resistor R19, a capacitor C8, a capacitor C9, a capacitor C10, a MOS tube Q1, an effect tube Q2, a diode D1, a diode D2, and a voltage regulator diode ZD2;

[0023] Pin 18 of the IC3 is connected to capacitor C14, the capacitor C14 is connected to resistor R18, the resistor R18 is connected to diode D2, MCU chip, and MOS tube Q1, the MOS tube Q1 is connected to diode D1, voltage-stabilizing diode ZD2, capacitor C10, and capacitor C9, the diode D1 is connected to resistor R13, the resistor R13 is connected to capacitor C12 and effect tube Q2, the effect tube Q2 is connected to resistor R19 and capacitor C15, and the capacitor C15 is connected to resistor R15 and resistor R16.

[0024] Furthermore, the capacitors C8, C9 and C10 are filter capacitors for avoiding abnormal pulses on the power line of the vehicle.

[0025] Further, the power supply module includes a diode D3, a resistor R26, a capacitor C24, a capacitor C23, and a capacitor C26;

[0026] Pin 3 of the IC5 is connected to pin 4, pins 1 and 4 of the IC5 are connected to capacitor C24, the capacitor C24 is connected to resistor R26, the resistor R26 is connected to diode D3, and the diode D3 is connected to the MCU chip;

[0027] Pins 5 and 6 of the IC5 are connected to capacitor C23, and pins 5 and 8 of the IC are connected to capacitor C26, and capacitor C26 is connected to VCC_5V.

[0028] Furthermore, the IC1 is a CAN transceiver, pin 3 of the IC1 is connected to VCC_5V and capacitor C1, pins 6 and 7 of the IC1 are connected to pins 1 and 4 of the live wire L1, and pins 2 and 3 of the live wire L1 are connected to pins 1 and 2 of the jumper.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The solution using discrete devices is reliable and can adjust the product's voltage resistance level according to the needs of the vehicle;

[0031] 2. Adopting dual-line structure, it supports communication between multiple nodes;

[0032] 3. Fast communication rate, allowing multiple nodes to act as hosts, suitable for engine systems that require high performance and complex communications. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of a speed module of the present invention;

[0034] Figure 2 is a schematic diagram of a power module of the present invention;

[0035] Figure 3 It is a schematic diagram of a power module of the present invention;

[0036] Figure 4 It is a schematic diagram of the CAN communication module of the present invention;

[0037] Figure 5 It is a schematic diagram of MCU of the present invention;

[0038] Figure 6 This is a peripheral application block diagram of the voltage regulator of the present invention. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0040] Embodiment 1:

[0041] See also Figure 1-5 , the present invention provides a technical solution:

[0042] The invention discloses an intelligent regulator based on CAN communication, comprising a speed module, a power module, a power supply module, a CAN communication module and an MCU chip. The MCU chip is a main control chip, whose model is MCUFS32K. The speed module is provided with an IC2, whose model is LM2904. The power module is provided with an IC3, whose model is AD8397. The power supply module is provided with an IC5, whose model is ADP7. The CAN communication module is provided with an IC1, whose model is SN65. The MCU chip is respectively connected to the speed module, the power module, the power supply module and the CAN communication module.

[0043] The speed module includes resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, capacitor C2, capacitor C6, resistor R9, and capacitor C11. Capacitor C6 is connected to capacitor C11 and resistor R9 at pin 5 of IC2. Resistor R9 is connected to resistor R12 and MCU chip. Pin 7 of IC2 is connected to resistor R5. Resistor R5 is connected to resistor R3 and resistor R6. Resistor R3 is connected to capacitor C4 and MCU chip. Pin 1 of IC2 is connected to resistor R1. Resistor R1 is connected to capacitor C2 and MCU chip. Resistor R9, capacitor C6, and capacitor C11 form high- and low-pass circuits for filtering noise at the phase end of the generator.

[0044] The power module includes resistor R13, resistor R15, resistor R16, resistor R18, resistor R19, capacitor C8, capacitor C9, capacitor C10, MOS tube Q1, effect tube Q2, diode D1, diode D2, and voltage regulator diode ZD2. Pin 18 of IC3 is connected to capacitor C14, capacitor C14 is connected to resistor R18, resistor R18 is connected to diode D2, MCU chip, MOS tube Q1, MOS tube Q1 is connected to diode D1, voltage regulator diode ZD2, capacitor C10, capacitor C9, diode D1 is connected to resistor R13, resistor R13 is connected to capacitor C12 and effect tube Q2, effect tube Q2 is connected to resistor R19 and capacitor C15, capacitor C15 is connected to resistor R15 and resistor R16.

[0045] Capacitors C8, C9, and C10 are filter capacitors to avoid abnormal pulses on the power line of the vehicle. The power module includes diode D3, resistor R26, capacitor C24, capacitor C23, and capacitor C26. Pin 3 of IC5 is connected to pin 4, pins 1 and 4 of IC5 are connected to capacitor C24, capacitor C24 is connected to resistor R26, resistor R26 is connected to diode D3, diode D3 is connected to MCU chip, pins 5 and 6 of IC5 are connected to capacitor C23, pins 5 and 8 of IC are connected to capacitor C26, and capacitor C26 is connected to VCC_5V.

[0046] IC1 is a CAN transceiver, pin 3 of IC1 is connected to VCC_5V and capacitor C1, pin 6 and pin 7 of IC1 are connected to pin 1 and pin 4 of live wire L1, pin 2 and pin 3 of live wire L1 are connected to pin 1 and pin 2 of jumper.

[0047] How it works:

[0048] Speed ​​module such as Figure 2 As shown in the figure, the high-low pass circuit composed of R9, C6, and C11 can effectively filter out the noise at the phase end of the generator, and send the effective waveform to the inside of the chip through the 5PIN of IC2 to avoid misjudgment of the regulator caused by noise, and then output it to the MCU through the 7PIN of IC2, so that the MCU can detect the generator speed status at all times. After R2 and R4 divide the voltage, the phase voltage is input through the 2PIN of IC2, and output through the 1PIN of IC2 for the MCU to detect the phase voltage, while providing phase voltage detection for realizing the self-excitation function.

[0049] The power module is as follows Figure 3 As shown, R13, C12, C15, R19, and Q2 ensure the switching rate of the MOS tube Q1 and ensure that the rising and falling edges do not jitter. D1 protects the MOS, and C8, C9, and C10 are filter capacitors to prevent abnormal pulses on the vehicle power line from affecting the operation of the regulator; ZD2 is a bidirectional TVS that improves the product's voltage resistance and reliability. D2 is a freewheeling diode to prevent the reverse electromotive force on the generator rotor from damaging the internal electronic components when the MOS tube switches. IC3 is a current amplifier to prepare for the control of the generator excitation current, output voltage and other functions.

[0050] The power module is as follows Figure 4 As shown, the module outputs a stable 5V voltage through IC5 from the battery voltage to power other modules such as the MCU, ensuring internal working stability.

[0051] The CAN communication module is as follows Figure 5 As shown in the figure, the module IC1 is a CAN transceiver. The stable voltage provided by the power module avoids CAN malfunction and avoids the disadvantage of low voltage resistance of CAN transceivers in the current market, thus improving the reliability of the product. CANH and CANL are used to realize interaction with the whole vehicle.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CAN communication-based intelligent regulator, comprising a speed module, a power module, a power supply module, a CAN communication module and an MCU chip, characterized in that: The MCU chip is a main control chip, and its model is MCUFS32K; The speed module is provided with IC2, whose model is LM2904; The power module is provided with IC3, whose model is AD8397; The power module is provided with IC5, whose model is ADP7; The CAN communication module is provided with IC1, whose model is SN65; The MCU chip is respectively connected to the speed module, the power module, the power supply module and the CAN communication module.

2. The CAN communication-based intelligent regulator according to claim 1, characterized in that: The speed module includes resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, capacitor C2, capacitor C6, resistor R9, capacitor C11, capacitor C6 of pin 5 of IC2, capacitor C6 connected to capacitor C11 and resistor R9, and resistor R9 connected to resistor R12 and MCU chip; Pin 7 of the IC2 is connected to a resistor R5, the resistor R5 is connected to resistors R3 and R6, and the resistor R3 is connected to a capacitor C4 and an MCU chip; Pin 1 of the IC2 is connected to a resistor R1, and the resistor R1 is connected to a capacitor C2 and an MCU chip.

3. According to claim 2, a CAN communication-based intelligent regulator is characterized in that: The resistor R9, the capacitor C6 and the capacitor C11 form a high- and low-pass circuit for filtering the noise at the phase end of the generator.

4. The intelligent regulator based on CAN communication according to claim 3 is characterized in that: The power module includes a resistor R13, a resistor R15, a resistor R16, a resistor R18, a resistor R19, a capacitor C8, a capacitor C9, a capacitor C10, a MOS tube Q1, an effect tube Q2, a diode D1, a diode D2, and a voltage regulator diode ZD2; Pin 18 of the IC3 is connected to capacitor C14, the capacitor C14 is connected to resistor R18, the resistor R18 is connected to diode D2, MCU chip, and MOS tube Q1, the MOS tube Q1 is connected to diode D1, voltage-stabilizing diode ZD2, capacitor C10, and capacitor C9, the diode D1 is connected to resistor R13, the resistor R13 is connected to capacitor C12 and effect tube Q2, the effect tube Q2 is connected to resistor R19 and capacitor C15, and the capacitor C15 is connected to resistor R15 and resistor R16.

5. The intelligent regulator based on CAN communication according to claim 4 is characterized in that: The capacitors C8, C9 and C10 are filter capacitors for avoiding abnormal pulses on the power line of the vehicle.

6. The intelligent regulator based on CAN communication according to claim 1, characterized in that: The power supply module includes a diode D3, a resistor R26, a capacitor C24, a capacitor C23, and a capacitor C26; Pin 3 of the IC5 is connected to pin 4, pins 1 and 4 of the IC5 are connected to capacitor C24, the capacitor C24 is connected to resistor R26, the resistor R26 is connected to diode D3, and the diode D3 is connected to the MCU chip; Pins 5 and 6 of the IC5 are connected to capacitor C23, and pins 5 and 8 of the IC are connected to capacitor C26, and capacitor C26 is connected to VCC_5V.

7. The intelligent regulator based on CAN communication according to claim 1, characterized in that: The IC1 is a CAN transceiver, pin 3 of the IC1 is connected to VCC_5V and capacitor C1, pins 6 and 7 of the IC1 are connected to pins 1 and 4 of the live wire L1, and pins 2 and 3 of the live wire L1 are connected to pins 1 and 2 of the jumper.

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