Wireless Vehicle Security Motion Sensor Power Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle security systems lack enhanced motion detection and power conservation features, particularly when the vehicle is in motion, and do not effectively manage multiple wireless security sensors with unique identifiers or provide efficient battery management.
Innovation Solution
A vehicle security system comprising a vehicle controller, a first wireless communications device, and at least one wireless security sensor with a motion sensor, a sensor controller, and a battery, which detects motion exceeding security alert thresholds, sends alert messages, and enters power-saving mode when the vehicle is moving, while allowing for unique identifier-based alerts and inductive charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the motion sensor continuously monitors motion to provide enhanced security, then security detection capability is improved, but battery power consumption increases
Solution Approach 1:
The system dynamically adjusts its operational state based on detected motion conditions. When motion exceeding the first threshold is detected for a predetermined time, the system transitions to power-saving mode, reducing monitoring frequency while maintaining security alertness. This dynamic adaptation allows the sensor to balance between continuous security monitoring and battery conservation.
Solution Approach 2:
The system implements periodic motion threshold checking with different intervals based on operational state. During active monitoring, it checks motion at full frequency. When entering power-saving mode, it reduces to periodic checks at lower frequency, thereby maintaining security awareness while significantly reducing power consumption compared to continuous monitoring.
2Duration of action of moving object
If the sensor enters power-saving mode to conserve battery, then battery life is extended, but security response time may be delayed
Solution Approach 1:
The system performs preliminary motion assessment by detecting motion exceeding the first threshold for a predetermined time period before entering power-saving mode. This preliminary action ensures that transient motions (like vehicle passage) are distinguished from genuine security threats, allowing the system to enter power-saving mode safely without compromising security response capability.
Solution Approach 2:
The system maintains feedback loops even in power-saving mode, periodically checking for motion events that exceed the first threshold. When such events are detected, the system immediately exits power-saving mode and resumes full monitoring, ensuring that security response time is minimized when threats are present while maintaining battery conservation during normal operation.
3Reliability
If multiple wireless security sensors with unique identifiers are deployed, then security coverage is enhanced, but system complexity increases
Solution Approach 1:
The system divides the security monitoring function into independent, identical sensor units, each with a unique identifier. Each sensor operates autonomously with its own motion detection and power management capabilities. This segmentation allows multiple sensors to be deployed without proportionally increasing system complexity, as each unit is self-contained and follows the same operational protocol.
Solution Approach 2:
The system implements a universal communication protocol and control architecture that works identically with any number of sensor units. The vehicle controller manages all sensors through a standardized interface, and each sensor follows the same state transition logic. This universality allows the system to scale from one to multiple sensors without requiring complex customization for each additional unit.
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
The system provides enhanced security with reduced battery consumption by entering power-saving mode when the vehicle is in motion and allows for customized alerts and efficient battery management through unique identifiers, ensuring prolonged sensor functionality.
Implementation Method 1
a motion sensor carried by the portable housing to detect motion of the portable housing
Implementation Method 2
an inductive charging circuit carried by the portable housing and cooperating with the sensor controller to inductively charge the battery
Data Source
AI summary
A vehicle security system may include a vehicle controller and a first wireless communications device carried by the vehicle, and a wireless security sensor(s). The wireless security sensor(s) may include a portable housing, a motion sensor carried by the portable housing to detect motion thereof, a second wireless communications device carried by the portable housing to communicate with the first wireless communications device, and a sensor controller carried by the portable housing. The sensor controller may cooperate with the motion sensor and the second wireless communications device to determine when motion of the portable housing exceeds a first security alert threshold and send a first security alert message to the vehicle controller based thereon, and determine when the first security alert threshold is exceeded for a predetermined time and enter a power saving mode. The vehicle controller may generate a first alarm responsive to the first security alert message.