Control circuit and control method

A technology of control circuit and control method, which is applied in the direction of data processing power supply, electrical digital data processing, liquid/fluid solid measurement, etc., and can solve problems such as failure to work normally
CN110532223APending Publication Date: 2019-12-03BEIJING BAIDU NETCOM SCI & TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING BAIDU NETCOM SCI & TECH CO LTD
Publication Date
2019-12-03

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Abstract

The invention discloses a control circuit and a control method, and relates to the technical field of power supply control. The scheme can be applied to the field of automatic driving, in particular to the field of autonomous parking. According to the specific implementation scheme, the control circuit comprises an on-chip system, a power supply and a micro-control unit; the power supply is connected with the system-on-chip; the micro-control unit is connected with the enabling end of the power supply and used for sending a first enabling signal to the enabling end of the power supply, and thefirst enabling signal enables the power supply to supply power to the system-on-chip; the system-on-chip is further connected with the enabling end of the power supply and used for sending a second enabling signal to the enabling end of the power supply, and the second enabling signal enables the power supply to maintain the state of supplying power to the system-on-chip. When the micro-control unit is abnormal or reset and cannot control the power supply to supply power to the system on chip through the first enable signal, the system on chip can continue to keep the power supply powered onthrough the second enable signal, and therefore it is guaranteed that the system on chip can still work normally when the micro-control unit is abnormal or reset.
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Description

Technical field

[0001] This application relates to the field of electrical technology, in particular to the field of power control technology. Background technique

[0002] In the hardware architecture of MCU (Microcontroller Unit) combined with SoC (System on Chip) adopted by the autopilot controller, the MCU has a high security level, but its performance is low. It is generally used in vehicle control and safety communications. in. The SoC has a low security level but high performance, and is generally used in road perception, fusion and trajectory planning. To achieve the high safety level of the entire autonomous driving system, the power supply of the SoC must be controlled by the MCU. However, if the MCU has a problem and needs to be reset, the power of the SoC will also be powered off, making the SoC unable to work normally when the MCU is reset. Summary of the invention

[0003] The embodiments of the present application provide a control circuit and a control method to...

Claims

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