The invention discloses an electronic parking redundant system. The system comprises a first microcontroller unit, a second microcontroller unit, a first power management chip and a second power management chip. The first power management chip generates a change-over switch enable signal by determining a fault state of a watchdog of the first microcontroller unit, so as to change the on-off state of the first change-over switch and the second change-over switch according to the change-over switch enable signal. The second power management chip is used for determining the fault state of a watchdog of the second microcontroller unit. The first microcontroller unit controls the on-off state of the first pre-driving integrated circuit according to the on-off state of the first change-over switch so as to drive the electronic parking brake system. The second microcontroller unit is used for controlling the on-off state of the second pre-driving integrated circuit according to the take-over function starting state of the second microcontroller unit and the on-off state of the second change-over switch so as to drive the electronic parking brake system. The reliability and the stability of the electronic parking system are improved.
本申请公开了一种电子驻车冗余系统,该系统包括:第一微控制器单元、第二微控制器单元、第一电源管理芯片和第二电源管理芯片。第一电源管理芯片通过确定第一微控制器单元的看门狗的故障状态来生成切换开关使能信号,以根据切换开关使能信号改变第一切换开关和第二切换开关的开闭状态。第二电源管理芯片用于确定第二微控制器单元的看门狗的故障状态。第一微控制器单元根据第一切换开关的开闭状态控制第一预驱动集成电路的通断,以驱动电子驻车制动系统。第二微控制器单元用于根据第二微控制器单元的接管功能启动状态和第二切换开关的开闭状态控制第二预驱动集成电路的通断,以驱动电子驻车制动系统。本申请提高了电子驻车系统的可靠性和稳定性。
Electronic parking redundant system
一种电子驻车冗余系统
2024-12-24
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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