Vehicle Collision Notification Wake-Up for Parked Charging States
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Solution Overview
Problem
Existing motor vehicles lack effective mechanisms to promptly signal collisions that occur during parking conditions, especially when the vehicle is temporarily abandoned and in a charging state, due to the limitations of current collision detection systems which require the communication control unit to be in an active state.
Innovation Solution
A motor vehicle equipped with a collision notification device that includes a transducer to detect acceleration, a passive safety control unit to process the signal and determine impact conditions, and a wake-up control unit to activate the communication control unit and transmit a signal indicating the collision, even when the vehicle is in a stationary or parked state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the communication control unit remains in sleep mode during parking conditions, then energy consumption is reduced, but collision detection and signaling capability is lost
Solution Approach 1:
The control system is divided into two independent parts: a passive safety control unit that remains permanently active and monitors collision signals, and a communication control unit that enters sleep mode to save energy. The passive safety control unit can independently detect collisions and trigger wake-up signals without requiring the communication control unit to be active, thus resolving the contradiction between energy saving and collision detection capability.
Solution Approach 2:
The passive safety control unit acts as an intermediary between the collision sensors and the communication control unit. It continuously monitors impact sensor signals even when the communication control unit is in sleep mode, and only activates the communication control unit when a collision is detected, thereby enabling energy-efficient operation while maintaining reliable collision detection and signaling.
2Reliability
If the communication control unit is activated continuously, then collision signaling is immediate, but energy consumption increases
Solution Approach 1:
The passive safety control unit performs preliminary monitoring of collision signals continuously without requiring the communication control unit to be active. It prepares and holds collision detection capability in advance, and only activates the communication control unit when actually needed, thus achieving immediate collision signaling while minimizing energy consumption during normal parking conditions.
Solution Approach 2:
Instead of continuous activation, the communication control unit operates periodically - remaining in sleep mode during normal conditions and being activated only when the passive safety control unit detects a collision and sends a wake-up signal. This periodic activation pattern ensures responsive collision signaling while dramatically reducing overall energy consumption.
3Extent of automation
If automated wake-up is programmed after idle time, then diagnostic activities are performed, but collision signaling is delayed
Solution Approach 1:
The passive safety control unit provides continuous feedback monitoring of collision sensor signals independent of the automated wake-up schedule. When a collision occurs, the system immediately receives feedback through the passive safety control unit and triggers an instant wake-up signal, eliminating any delay associated with waiting for programmed automated wake-up times to occur.
Solution Approach 2:
The passive safety control unit performs preliminary continuous monitoring of collision signals before the automated wake-up schedule would activate the communication control unit. This preliminary action ensures that collisions are detected and signaled immediately upon occurrence, rather than waiting for the next programmed wake-up interval, thus eliminating signaling delay while maintaining automated diagnostic capabilities.
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
Enables prompt and effective signaling of collision events to the driver or authorities, even when the vehicle is unattended, without the need for continuous power consumption by the communication control unit, thus enhancing safety and reducing potential risks.
Implementation Method 1
a transducer (5) configured to detect a quantity indicative of an acceleration of the motor vehicle (1)
Data Source
Figure 1
Figure 2
AI summary
A motor vehicle (1) includes a control telecommunication network (4), an acceleration transducer (5) configured to detect a quantity indicative of an acceleration of the motor vehicle (1) and to generate an acceleration signal (6) corresponding to the detected quantity, a passive safety control unit (7) connected to the control telecommunication network (4) and configured to receive the acceleration signal (6) generated by the acceleration transducer (5), determine from the acceleration signal (6) an impact condition when the detected quantity indicates the satisfaction of a predetermined relationship with a threshold associated with said acceleration, and emit a first and a second impact signal (8, 9) when the impact condition is determined, a transceiver (10) connected to the control telecommunication network (4) and configured to receive the first impact signal (8) and transmit a wake-up signal (11) to the control telecommunication network (4) in response to the reception of the first impact signal (8), a communication control unit (13) connected to the control telecommunication network (4), and a wake-up control unit (12) configured to pick up the wake-up signal (11) from the control telecommunication network (4) and to execute via the control telecommunication network (4) a wake-up procedure causing the communication control unit (13) to wake up, so that the communication control unit (13) goes from an idle state to a wake-up state, in response to the picking up of the wake-up signal (11), wherein the communication control unit (13) is configured in the wake-up state to pick up the second impact signal (9) from the control telecommunication network (4) and to emit a radio signal outside the motor vehicle (1) in response to the picking up of the second impact signal (9) .