Brake System Wake-Up via Inductive Magnet Rotation
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Solution Overview
Problem
Existing brake system wake-up devices require dedicated magnets and sensors, leading to increased installation space and costs, and fail to activate brake system components without active internal sensors or current consumption.
Innovation Solution
A wake-up device that utilizes a magnet already integrated in the brake system, such as a brake booster or rotor position sensor, to induce a voltage or current through rotational motion with a shiftable driver brake force transmission component, eliminating the need for a separate wake-up magnet and enabling activation of brake system components without active sensors or current usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated magnet and sensor are used for wake-up function, then the wake-up reliability is improved, but the installation space and system cost increase
Solution Approach 1:
The patent applies multi-functionality by making the magnet serve dual purposes: it is both a functional magnet for the brake system (e.g., in the electric motor or rotor position sensor) and a wake-up magnet for generating the wake-up signal. This eliminates the need for a separate dedicated wake-up magnet, thereby reducing installation space and system cost while maintaining wake-up reliability
Solution Approach 2:
The patent implements self-service by enabling the brake system's own magnet to generate the wake-up signal through rotational motion during normal operation. The system uses its existing components (magnet and sensor) to activate itself, eliminating the need for external wake-up devices and reducing overall system complexity
2Reliability
If active internal sensors are used for wake-up signal generation, then the activation reliability is improved, but the energy consumption increases
Solution Approach 1:
The patent enables the brake system component to wake up itself by using its own rotational motion to generate the wake-up signal. The magnet rotates with the driver brake force transmission component, inducing voltage in the sensor without requiring external activation or continuous power supply to sensors,从而实现低功耗的可靠激活
Solution Approach 2:
The wake-up signal is generated periodically through the rotational motion of the magnet during normal brake operation. The periodic rotation naturally produces the necessary signal variations to activate the control unit, eliminating the need for continuous sensor power consumption while maintaining reliable activation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces installation space and costs by repurposing existing magnets, allowing for reliable activation of brake system components from a passive to an active state using an inductively generated signal, and enables energy mode transitions without active sensor involvement or current consumption.
Implementation Method 1
a magnet (14) situated in a jointly shiftable manner on a shiftable driver brake force transmission component (12) in such a way that the magnet (14) is able to be put into a rotational motion by the joint shifting with the shiftable driver brake force transmission component (12); at least one electrical conductor (16), in which, by the relative motion between the magnet (14) and the at least one electrical conductor (16), an induction voltage is inducible
Data Source
AI summary
A wake-up device for a brake system component of a vehicle includes a magnet that is arranged to be set, via a transmission device, in rotational motion jointly with a shifting of a driver brake force transmission component, thereby effecting a relative motion between the magnet and an electrical conductor. The relative motion induces an induction voltage. An output device outputs the induction voltage or a wake-up signal generated based on the induction voltage to the brake system component, thereby controlling the brake system component to transition from a first energy use mode to a second energy use mode. A method includes controlling the brake system component to transition from the first energy use mode to the second energy use mode by outputting the induction voltage or wake-up signal generated as described above.