Battery Sensor Data Packet Segmentation for Range and Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery-operated stationary sensor arrangements face challenges in extending the range and reducing battery load while maintaining low transmission error probabilities, especially when transmitting small amounts of data with high signal-to-noise ratios.
Innovation Solution
The solution involves dividing sensor data packets into shorter data packets and transmitting them at a data rate of less than 50 kbit/s with a time interval, using channel encoding and distributing packets across different frequencies, and employing synchronization sequences to improve decoding efficiency and reduce battery load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data is transmitted at higher data rates, then transmission speed is improved, but transmission error probability increases and signal-to-noise ratio decreases
Solution Approach 1:
The patent divides sensor data into multiple short data packets instead of transmitting as a single long packet. Each packet is transmitted separately with its own synchronization sequence, allowing the receiver to process and acknowledge each packet individually. This segmentation enables reliable transmission at higher data rates by reducing the probability that entire data sets are corrupted by noise affecting any single packet.
2Length of stationary object
If transmission range is extended, then signal-to-noise ratio is improved, but battery load increases due to higher transmission power requirements
Solution Approach 1:
The patent employs periodic transmission of short data packets with time intervals between transmissions, rather than continuous transmission. The sensor transmits data packets periodically at optimized intervals, allowing the battery-operated sensor to consume less energy while maintaining communication functionality. This periodic action reduces overall battery load compared to continuous high-power transmission.
Solution Approach 2:
By segmenting data into short packets that can be transmitted quickly and efficiently, the system achieves extended communication range without requiring excessive transmission power. The short packet duration allows the signal to be transmitted with sufficient power for extended range while minimizing total energy consumption.
3Reliability
If data packets are made shorter, then transmission error probability is reduced, but more packets are required increasing device complexity
Solution Approach 1:
The patent employs universal synchronization sequences that are embedded in every data packet. These synchronization sequences serve multiple functions: they enable the receiver to detect the start of each packet, synchronize to the transmission timing, and identify packet boundaries. This multi-functional approach simplifies the receiver design despite handling multiple packets, reducing the complexity increase that would otherwise result from processing numerous short packets.
4Productivity
If synchronization sequences are distributed across packets, then decoding efficiency is improved, but device complexity increases
Solution Approach 1:
The synchronization sequence is divided into partial synchronization sequences, with each partial sequence embedded in corresponding data packets. This segmentation of the synchronization function across multiple packets allows the receiver to synchronize incrementally as packets arrive, improving decoding efficiency by establishing timing reference early and maintaining it throughout the data reception process.
Data Source
AI summary
Embodiments of the present invention provide a battery-operated stationary sensor arrangement with a unidirectional data transmission. The battery-operated stationary sensor arrangement has a sensor, a means for generating data packets and a means for transmitting data packets. The transmitter is implemented to determine sensor data and provide a sensor data packet based on the sensor data, wherein the sensor data has an amount of data of less than 1 kbit. The means for generating data packets is implemented to divide the sensor data packet into at least two data packets, wherein each of the at least two data packets is shorter than the sensor data packet. The means for transmitting data packets is implemented to transmit the data packets with a data rate of less than 50 kbit/s and a time interval via a communication channel.