Vehicle Wireless Sensor Alarm Transmission for Battery Life
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless vehicle sensors, such as TPMS, face challenges in conserving battery life due to the high energy drain from bidirectional RF communication, limiting their ability to utilize the full functionality of Bluetooth Low Energy technology, especially when battery life is restricted to a ten-year design life.
Innovation Solution
Implementing a configurable threshold system that allows a vehicle control system to set alarm thresholds for wireless sensors, enabling them to transmit alarm messages only when critical thresholds are violated, thereby reducing the frequency and duration of transmissions and conserving battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bidirectional RF communication is implemented in wireless sensors, then communication functionality is improved, but battery life is reduced
Solution Approach 1:
The sensor device transmits alarm messages periodically at predetermined intervals when the alarm condition persists, rather than continuously transmitting. This periodic transmission approach maintains communication functionality while significantly reducing power consumption compared to continuous transmission, thereby extending battery life.
Solution Approach 2:
The sensor device autonomously determines whether to transmit alarm messages based on local evaluation of sensor data against threshold values. The device self-manages the transmission decision-making process without requiring constant vehicle system intervention, enabling efficient use of bidirectional communication while conserving battery power.
2Reliability
If alarm messages are transmitted frequently to ensure system reliability, then reliability is improved, but energy consumption increases
Solution Approach 1:
The vehicle system provides feedback by transmitting threshold values to the sensor device and receiving alarm messages when thresholds are exceeded. This feedback mechanism enables the sensor to transmit only when necessary, maintaining system reliability through timely alarm notification while minimizing unnecessary transmissions that would consume energy.
Solution Approach 2:
The system changes the transmission parameter from continuous or frequent transmission to conditional transmission based on threshold violations. By monitoring sensor data and comparing against configurable thresholds, the system ensures reliable alarm notification only when actual alarm conditions exist, thereby maintaining reliability while reducing energy consumption.
3Duration of action of moving object
If transmission windows are restricted to conserve battery capacity, then battery life is improved, but communication capability is reduced
Solution Approach 1:
The communication system dynamically adjusts its operation mode based on conditions. During normal operation, the sensor operates in a low-power mode with restricted transmission windows. When alarm conditions are detected, the system dynamically switches to an active transmission mode, utilizing bidirectional communication capability to send alarm messages and receive threshold configurations, thus adapting communication capability to actual needs while preserving battery life.
Data Source
AI summary
Methods, systems, apparatuses, and computer program products for persistent alarm transmissions associated with a vehicle mounted wireless sensor device are disclosed. In a particular embodiment, persistent alarm transmission includes a vehicle mounted wireless sensor device monitoring one or more operational parameters of a vehicle and detecting that the one or more operational parameters violates a configurable threshold that is configured by another device. In response to detecting that the one or more operational parameters violates the configurable threshold, the vehicle mounted wireless sensor device persistently transmits an alarm message.