CN-121989879-A - High-function safety brake chip of motorcycle and power-on method thereof

CN121989879ACN 121989879 ACN121989879 ACN 121989879ACN-121989879-A

Abstract

The technical scheme of the invention provides a high-function safety brake chip of a motorcycle and a power-on method thereof, wherein at least a first power supply module, a second power supply module, a pump motor pre-driving module, an electromagnetic valve driving module and a logic control module are integrated, when the pump motor pre-driving module, the electromagnetic valve driving module and the first power supply module have faults, fault signals of the pump motor pre-driving module, the electromagnetic valve driving module and the first power supply module are transmitted to an MCU through the logic control module, so that the MCU does not need to collect and diagnose the fault signals of the pump motor pre-driving module, the electromagnetic valve driving module and the first power supply module independently, but processes the fault inside the chip and reports the fault signals to the MCU uniformly, and the time for fault discovery and processing delay are obviously shortened. The second power supply module is used for supplying power to the off-chip sensor, and the power supply module of the sensor is integrated inside the chip, so that the wiring cost and the device cost of the peripheral circuit of the chip are reduced.

Inventors

ZHANG MENG
ZHENG KUNKUN
Zuo Anchao

Assignees

合肥鸿翼芯电子科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260228

Claims (14)

1. A high-function safety brake chip of a motorcycle, characterized in that it is integrated with: the first power supply module is used for converting an external input power supply into a first power supply voltage, and the first power supply voltage supplies power for the MCU outside the chip; The second power supply module is used for converting an external input power supply into a second power supply voltage, and the second power supply voltage supplies power for the off-chip sensor; The pump motor pre-driving module is used for pre-driving the pump motor pre-driving MOS tube outside the chip according to the second motor driving control signal group; the electromagnetic valve driving module is used for driving the four-way electromagnetic valve according to the second electromagnetic valve driving control signal group; Logic control module for: Outputting the second motor driving control signal group according to the first motor driving control signal group input by the MCU; Outputting the second electromagnetic valve driving control signal group according to the first electromagnetic valve driving control signal group input by the MCU; Transmitting the fault signal of the first power supply module and the fault signal of the electromagnetic valve driving module to the MCU, and turning off the electromagnetic valve driving module according to a first turn-off control signal and an MCU fault signal input by the MCU; Transmitting the fault signal of the first power supply module and the fault signal of the pump motor pre-driving module to the MCU, and switching off the pump motor pre-driving module according to a second switching-off control signal input by the MCU.
2. The high-function safety brake chip of the motorcycle according to claim 1, wherein the first power supply module comprises a first LDO unit and a first driving power tube, wherein the first LDO unit converts an external input power supply into a first driving voltage and outputs the first driving voltage to a grid electrode of the first driving power tube; The second power supply module comprises a second LDO unit and a second driving power tube, the first LDO unit converts an external input power supply into a second driving voltage and outputs the second driving voltage to a grid electrode of the second driving power tube, a drain electrode of the second driving power tube is connected with the external output power supply, a source electrode of the second driving power tube outputs the second power supply voltage, and the first driving power tube is arranged in a chip.
3. The high-function safety brake chip of a motorcycle according to claim 2, wherein the first power supply voltage is 5V/3.3V, and the output current corresponding to the first power supply voltage is 300mA; the second power supply voltage is 5V/3.3V, and the output current corresponding to the second power supply voltage is 100mA.
4. The high-function safety brake chip of a motorcycle according to claim 1, wherein the four-way solenoid valve includes two-way pressure increasing valves and two-way pressure reducing valves; The system comprises a logic control module, a current detection module, a digital-to-analog conversion module and a digital-to-analog conversion module, wherein the current detection module is used for acquiring current analog signals flowing through two paths of booster valves and outputting the current analog signals to the digital-to-analog conversion module; The logic control module compares the current digital signal with a current signal set value and outputs a current adjusting instruction to the electromagnetic valve driving module according to a comparison result; and the electromagnetic valve driving module enables the current flowing through the two paths of booster valves to approach to the current signal set value according to the current adjusting instruction.
5. The high-function safety brake chip of the motorcycle according to claim 4, wherein the electromagnetic valve driving module is further configured to perform fault diagnosis on driving power pipes corresponding to the two pressure increasing valves and driving power pipes corresponding to the two pressure reducing valves, and output a fault signal of the electromagnetic valve driving module according to the diagnosed fault, where the fault diagnosis includes at least overcurrent detection, overtemperature detection, overvoltage detection, and open-short circuit detection of each of the two pressure increasing valves and the two pressure reducing valves; The pump motor pre-driving module is also used for carrying out fault diagnosis on the pump motor pre-driving MOS tube and outputting fault signals of the pump motor pre-driving module according to the diagnosed faults, and the fault diagnosis at least comprises overcurrent detection, overtemperature detection, overvoltage detection and open-short circuit detection of the pump motor pre-driving MOS tube.
6. The high-function safety brake chip of a motorcycle according to claim 1, further integrated with a voltage monitoring module for monitoring the first power supply voltage and the second power supply voltage, outputting a fault signal of the first power supply voltage according to a fault in which the first power supply voltage is monitored, and outputting a fault signal of the second power supply voltage according to a fault in which the second power supply voltage is monitored; the logic control module is also used for switching off the electromagnetic valve driving module and the pump motor pre-driving module according to the fault signal of the second power supply voltage.
7. The high-function safety brake chip of a motorcycle according to claim 1, wherein the logic control module is further configured to output a first off driving signal according to a third off control signal input by the MCU, and output a second off driving signal according to a fourth off control signal input by the MCU; The logic control module is also used for directly outputting a third turn-off driving signal according to the fault signal of the electromagnetic valve driving module, and directly outputting a fourth turn-off driving signal according to the fault signal of the pump motor pre-driving module; The pump motor pre-driving MOS tube is characterized by further comprising a safety shut-off module, wherein the safety shut-off module cuts off the power input of the four-way electromagnetic valve according to the first shut-off driving signal or the third shut-off driving signal, and cuts off the power input of the pump motor pre-driving MOS tube according to the second shut-off driving signal or the fourth shut-off driving signal.
8. The high-function safety brake chip of the motorcycle according to claim 1, further integrated with a CAN communication interface for level-converting the inputted first communication signal and outputting a second communication signal to the MCU; The K-LINE communication interface is integrated, and is used for carrying out level conversion on the input third communication signal and outputting a fourth communication signal to the MCU; And the signal transmission rate of the CAN communication interface is larger than that of the K-LINE communication interface.
9. The high-function safety brake chip of the motorcycle according to claim 8, further comprising a wheel speed sensor power supply module for supplying power to the two wheel speed sensors, converting the wheel speed information of the two wheel speed sensors into corresponding digital signals, and transmitting the digital signals to the MCU.
10. The high-function safety brake chip of a motorcycle according to claim 1, further integrated with a malfunction light output module for driving a warning light on an instrument panel; and a wheel speed output module is integrated and is used for outputting a wheel speed signal to the outside of the system.
11. The high-function safety brake chip of the motorcycle according to claim 1, further comprising a watchdog module, wherein the watchdog module is configured to monitor an operation state of the MCU, and output a fifth off control signal to the logic control module according to a fault signal of the MCU and a fault signal of the solenoid valve driving module; The logic control module turns off the electromagnetic valve driving module according to the fifth turn-off control signal.
12. The high-function safety brake chip of a motorcycle according to claim 1, further integrated with a first reference source and a second reference source; the first reference source is used for providing a voltage reference for a functional module, and the functional module comprises the first power supply module, the second power supply module, a driving circuit in the electromagnetic valve driving module, a driving circuit in the pump motor pre-driving module, an analog-to-digital conversion module and a current detection module; The second reference source is used for providing a voltage reference for a safety monitoring module, and the safety monitoring module comprises a safety shutdown module, a voltage monitoring module, a fault detection circuit in the electromagnetic valve driving module and a fault detection circuit in the pump motor pre-driving module; The first reference source and the second reference source are both independently powered.
13. A method for powering up a high-function safety brake chip of a motorcycle, characterized in that it is based on a high-function safety brake chip of a motorcycle according to any one of claims 1 to 12, comprising: The internal power supply module of the high-function safety brake chip of the motorcycle supplies power to each module in the chip after an external wake-up signal and an external input power supply are input; The first power supply module outputs a first power supply voltage to the MCU after being input with the power supply voltages of the external input power supply and the internal power supply module; The MCU outputs a first electromagnetic valve driving control signal group and a first motor driving control signal group to the logic control module according to the input first power supply voltage; after the logic control module is input into the power supply of the internal power supply module, outputting the second motor drive control signal group according to the first motor drive control signal group, and outputting the second solenoid valve drive control signal group according to the first solenoid valve drive control signal group; The pump motor pre-driving module pre-drives the pump motor pre-driving MOS tube outside the chip according to the second motor driving control signal group; The electromagnetic valve driving module drives the four-way electromagnetic valve according to the second electromagnetic valve driving control signal group.
14. The power-up method of claim 13, further comprising outputting a first fault injection signal to the first power supply module and the second power supply module by the logic control module to perform fault injection on the first power supply module and the second power supply module during power-up of the brake chip; the logic control module also outputs a second fault injection signal to the pump motor pre-driving module and the electromagnetic valve driving module so as to perform fault injection on the pump motor pre-driving module and the electromagnetic valve driving module; After the first power supply module supplies power to the MCU, the power supply system further comprises a voltage monitoring module for detecting faults of the first power supply voltage output by the first power supply module and the second power supply voltage output by the second power supply module, and feeding back detection results to the MCU, wherein the pump motor pre-driving module and the electromagnetic valve driving module perform fault detection on respective driving power tubes, and feed back detection results to the MCU.

Description

High-function safety brake chip of motorcycle and power-on method thereof Technical Field The invention relates to the technical field of integrated circuits, in particular to a high-function safety brake chip of a motorcycle and a power-on method thereof. Background The new generation motorcycle ABS system has evolved from an independent braking safety module to a global vehicle dynamics integrated controller with 'perception-decision-execution-cooperation' as a closed loop. The key mission is to minimize the stability risk of the physical limit edge of the vehicle through electric control intervention on the premise of not sacrificing the control intention of the rider. Three mandatory national standards of motorcycles are formally implemented from the 1 st of 2026, and the new outgoing motorcycles are forcibly marked with ABS, which is a necessary condition for registration and license plate of new motorcycles. As ABS systems increase in integration, their electronic systems are increasing in complexity, and the introduction of functional safety (ISO 26262) to ensure safety after system failure is an advanced stage of industry development. However, in the prior art, the power chip and the solenoid valve driving chip applied to the ABS system are usually two independent chips, and if the power chip or the solenoid valve driving chip fails to cause abnormal braking control, the MCU needs to collect status report information from the two chips, and determine what kind of failure occurs, thereby causing delay in fault diagnosis and processing. Disclosure of Invention The invention solves the technical problem of how to reduce the delay of fault diagnosis and treatment of a high-function safety brake chip of a motorcycle. In order to solve the above technical problem, according to a first aspect of the present invention, there is provided a high-functional safety brake chip for a motorcycle, which is integrated with: the first power supply module is used for converting an external input power supply into a first power supply voltage, and the first power supply voltage supplies power for the MCU outside the chip; The second power supply module is used for converting an external input power supply into a second power supply voltage, and the second power supply voltage supplies power for the off-chip sensor; The pump motor pre-driving module is used for pre-driving the pump motor pre-driving MOS tube outside the chip according to the second motor driving control signal group; the electromagnetic valve driving module is used for driving the four-way electromagnetic valve according to the second electromagnetic valve driving control signal group; Logic control module for: Outputting the second motor driving control signal group according to the first motor driving control signal group input by the MCU; Outputting the second electromagnetic valve driving control signal group according to the first electromagnetic valve driving control signal group input by the MCU; Transmitting the fault signal of the first power supply module and the fault signal of the electromagnetic valve driving module to the MCU, and turning off the electromagnetic valve driving module according to a first turn-off control signal and an MCU fault signal input by the MCU; Transmitting the fault signal of the first power supply module and the fault signal of the pump motor pre-driving module to the MCU, and switching off the pump motor pre-driving module according to a second switching-off control signal input by the MCU. Optionally, the first power supply module comprises a first LDO unit and a first driving power tube, wherein the first LDO unit converts an external input power supply into a first driving voltage and outputs the first driving voltage to a grid electrode of the first driving power tube; The second power supply module comprises a second LDO unit and a second driving power tube, the first LDO unit converts an external input power supply into a second driving voltage and outputs the second driving voltage to a grid electrode of the second driving power tube, a drain electrode of the second driving power tube is connected with the external output power supply, a source electrode of the second driving power tube outputs the second power supply voltage, and the first driving power tube is arranged in a chip. Optionally, the first power supply voltage is 5V/3.3V, and the output current corresponding to the first power supply voltage is 300mA; the second power supply voltage is 5V/3.3V, and the output current corresponding to the second power supply voltage is 100mA. Optionally, the four-way electromagnetic valve comprises two ways of pressure increasing valves and two ways of pressure reducing valves; The system comprises a logic control module, a current detection module, a digital-to-analog conversion module and a digital-to-analog conversion module, wherein the current detection module is used for acquiring current analog signals