Redundant power supply method for vehicle-mounted sensor

A technology for vehicle-mounted sensors and power supply methods, applied in electrical components, circuit devices, emergency power supply arrangements, etc., can solve problems such as failure of electronic control units, achieve high safety levels, improve R&D efficiency, and shorten R&D cycles.
CN112600295AInactive Publication Date: 2021-04-02TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2021-04-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a redundant power supply method for a sensor. The redundant power supply method is a redundant power supply technology applied to a vehicle-mounted sensor, can meet the power supply control requirement of a vehicle-mounted controller with a redundant structure on the same sensor, and achieves the purpose of providing a backup power supply for the sensor. According to the invention, a power supply failure of the sensor caused by failure of a single power supply control circuit is prevented from affecting the driving safety of the whole vehicle, requirements of different sensors for power supply amplitude and power supply precision can be met, and the protection functions of current protection, overvoltage protection, reverse connection protection, ESD electrostatic protection and the like can be met. A circuit constructed by using the redundant power supply method for the vehicle-mounted sensor in the invention is high in safety level and complete in function, a research and development period can be shortened, and the research and development efficiency of products is improved.
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Description

technical field

[0001] The invention relates to the technical field of automobile control, and more specifically, relates to a method for powering redundant vehicle sensors. Background technique

[0002] The automotive safety electronics technology with the goal of realizing automobile driving safety is one of the main directions for the development of automotive electronics in the future. With the gradual maturity of intelligent driving systems and automotive functional safety solutions, it is particularly important to rely on sensors to perceive the driver's operation of the car and the movement status of the car itself, and the control mode and safety protection of the sensor power supply by the automotive electronic control unit (ECU) The mechanism will directly affect whether the on-board sensors can work normally and stably. At present, the on-board controller simply draws power from the power management module to the external sensor. If the module fails or the circui...

Claims

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