Fleet Gateway Power Mode Switching for Long Idle Connectivity
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Solution Overview
Problem
Fleet management gateway systems face challenges in efficiently managing power consumption across various operational modes, leading to reduced battery life and inability to maintain connectivity over extended periods, especially when the mobile asset's engine is not in use.
Innovation Solution
The gateway system operates in multiple modes of operation, transitioning based on the state of the mobile asset and power source availability, allowing it to consume less power when not in use and ensuring continuous connectivity by periodically charging its internal battery, even when the external power source is not active.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gateway system operates continuously to maintain connectivity and transmit data, then connectivity and data transmission are ensured, but power consumption increases and battery life decreases
Solution Approach 1:
The gateway system dynamically adjusts its operational state based on power source availability. It transitions between active data transmission mode and low-power sleep mode, modifying its behavior in response to changing conditions (presence/absence of external power) to optimize both connectivity and power consumption
Solution Approach 2:
The system employs periodic operation cycles where it alternates between active transmission periods and sleep periods. When no external power is detected, it transmits data at intervals rather than continuously, allowing the battery to recharge from the vehicle battery while maintaining periodic connectivity updates
2Reliability
If the gateway system remains in active mode to transmit data frequently, then data transmission reliability is improved, but the battery charge depletes faster
Solution Approach 1:
The gateway system incorporates feedback mechanisms to monitor its power source status and adjust transmission behavior accordingly. It detects whether external power is available and uses this information to control transmission frequency, ensuring data transmission reliability when powered while preserving battery life when operating independently
Solution Approach 2:
The system changes operational parameters (transmission frequency, power mode) based on the available power source. It transitions between different transmission intervals and power consumption levels to maintain data transmission reliability while adapting to battery-powered or externally-powered operation
3Reliability
If the gateway system uses high power mode to ensure continuous operation, then operational reliability is improved, but the mobile asset's battery drains faster
Solution Approach 1:
The gateway system dynamically switches between high-power and low-power modes based on external power availability. When the vehicle engine is running and external power is present, it operates in high-power mode for reliable data transmission. When the vehicle is off, it transitions to low-power mode to minimize battery drain while maintaining essential operations
Data Source
AI summary
A method and a gateway system of a mobile asset are described. A voltage produced by a power system of the mobile asset is monitored by a gateway system. In response to determining that a first fluctuation occurs in the voltage produced by the power system of the mobile asset over a first interval of time, the gateway system operates in a first mode. In response to determining that a value of the voltage produced by the power system of the mobile asset is less than a voltage threshold, the gateway system automatically transitions to operating in a second mode, which is different from the first mode and causes the gateway system to consume less power than when it is operating in the first mode.