Cargo Monitoring Sensors for Arrival Detection and Battery Control
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Solution Overview
Problem
Existing monitoring systems fail to accurately determine when cargo has reached its destination, especially in scenarios where access to the vehicle is restricted, and they do not efficiently manage power consumption to ensure continuous operation during transportation.
Innovation Solution
A portable monitoring device equipped with sensors like light, temperature, and accelerometer determines destination arrival through combined geographic and sensor data, adjusts transmission power and frequency to conserve battery, and provides multi-level alerts to ensure reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring and transmission is performed to ensure accurate cargo arrival detection, then monitoring reliability is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts transmission frequency based on cargo proximity to destination. When cargo is far from destination, transmissions occur less frequently to conserve power. When cargo approaches destination (within geographic area), transmission frequency increases to ensure accurate arrival detection. This dynamic adjustment resolves the contradiction between continuous monitoring reliability and power consumption.
Solution Approach 2:
The system changes operational parameters (transmission power, transmission frequency) based on cargo location and arrival status. By modifying these parameters according to real-time conditions, the system maintains reliable arrival detection when needed while reducing power consumption during transit, effectively resolving the technical contradiction.
2Measurement precision
If multiple sensors are used to accurately determine cargo arrival, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system combines data from multiple sensors (GPS location, accelerometer, temperature sensor, light sensor) to determine cargo arrival. By merging information from these different sensor types, the system achieves high measurement precision for arrival detection while avoiding the need for any single complex sensor, thus balancing precision with manageable device complexity.
Solution Approach 2:
The monitoring device is designed with multi-functional sensors that serve multiple purposes. For example, the accelerometer detects both motion status and potential arrival conditions, while the light sensor helps determine cargo exposure conditions. This multi-functionality approach improves measurement precision without proportionally increasing device complexity.
3Reliability
If transmission power is increased to ensure reliable data transmission, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts transmission power based on cargo proximity to destination and data priority. When cargo is far from destination, lower transmission power is used to conserve energy. When cargo approaches destination or critical data needs transmission, power is increased to ensure reliable delivery. This dynamic power adjustment resolves the contradiction between transmission reliability and power consumption.
Solution Approach 2:
The system uses periodic transmissions with varying power levels based on cargo location and arrival status. Rather than continuous high-power transmission, the system transmits periodically with adaptive power levels, maintaining communication reliability when needed while significantly reducing overall power consumption during transit.
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
Ensures accurate cargo arrival detection and efficient power management, reducing unnecessary power consumption and maintaining device functionality throughout the transport process.
Implementation Method 1
said accelerometer of the portable monitoring device indicating that the vehicle carrying the cargo is stationary
Implementation Method 2
said temperature sensor of the portable monitoring device measuring an increase in temperature inside the vehicle above a threshold level
Implementation Method 3
the input data indicates the light sensor has measured an increased intensity of ambient light
Data Source
Figure 1
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Figure 5
AI summary
Systems and methods relating to monitoring cargo are provided. Various embodiments provide features relating to: (1) monitoring characteristics of cargo using a single device that may be disposable; (2) generating alerts based on a variety of temperature conditions, such as multiple temperature thresholds; (3) providing multiple levels of alerts and escalating alerts to different users; (4) providing an indication of an end of trip based on location data and data from sensor(s); (5) reducing power of transmissions between devices; (6) using frequency diversity features to communicate between devices; (7) providing configurable reporting and/or sensor monitoring parameters, and changing reporting and/or sensor measurement periods; (8) allowing for communication with devices across multiple frequency bands; (9) utilizing secondary communication circuits to communicate with different devices, such as across different frequency channels and/or bands; and (10) using a movement detection device (e.g., an accelerometer) to reduce false indications of movement.