Tire-Mounted Road Surface Condition Assessing Device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing road surface condition assessment devices face challenges in reducing power consumption while maintaining accurate evaluations, particularly due to the difficulty in replacing batteries in tire-mounted devices and the need for efficient data communication.
Innovation Solution
A road surface condition assessing device that includes a tire-mounted device with a vibration detector and waveform processor, which transmits road surface data as small-quantity data via an advertise signal, allowing for evaluation without establishing a connection each time, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If continuous connection is established for data communication between tire-mounted device and vehicle body system, then evaluation accuracy is maintained, but power consumption increases
Solution Approach 1:
The system performs road surface evaluation at periodic intervals rather than continuously. The tire-mounted device periodically transmits waveform processing values to the vehicle body system, which then performs evaluation at these discrete time points. This periodic operation maintains evaluation capability while significantly reducing power consumption compared to continuous monitoring and connection maintenance.
Solution Approach 2:
The patent extracts only the essential waveform processing value from the vibration signal and transmits this compressed data to the vehicle body system for evaluation. By transmitting only the extracted feature rather than continuous raw signal data, the system maintains evaluation accuracy while reducing communication data volume and power consumption.
2Reliability
If connection is established frequently for data transmission, then data communication reliability is improved, but battery life is reduced
Solution Approach 1:
The tire-mounted device performs waveform processing and extracts the waveform processing value in advance before transmission. By preparing the evaluation data locally and transmitting only the processed result, the system reduces the frequency and duration of communication connections, thereby extending battery life while ensuring reliable transmission of essential evaluation data when connections are established.
Solution Approach 2:
The system creates a compressed representation (waveform processing value) of the vibration signal characteristics and transmits this copy to the vehicle body system. This copied data contains the essential information needed for road surface evaluation, eliminating the need for frequent transmission of complete raw signal data and thus reducing power consumption while maintaining evaluation reliability.
3Measurement precision
If detailed vibration waveform data is transmitted, then evaluation precision is improved, but data communication load increases
Solution Approach 1:
The waveform processing portion of the tire-mounted device extracts the waveform processing value, which is a condensed representation of the vibration signal characteristics. This extracted value contains the essential features needed for road surface evaluation while being significantly smaller in data volume than the complete vibration waveform, thus reducing communication load while preserving evaluation precision.
Solution Approach 2:
The system transforms the vibration signal from its original time-domain waveform into a processed parameter (waveform processing value) that captures the essential characteristics. This parameter transformation reduces data volume for transmission while maintaining the information necessary for accurate road surface condition assessment.
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
Enables accurate road surface condition evaluation while minimizing power consumption by transmitting feature quantity data without continuous connection, extending battery life and improving data communication efficiency.
Implementation Method 1
a vibration detector that outputs a detection signal of a vibration on the tire
Data Source
AI summary
A road surface condition assessing device includes: a tire-mounted device; and a vehicle body system. The tire-mounted device includes: a vibration detector that outputs a detection signal of a vibration on a tire; a waveform processor that generates the road surface data; and a first data communication unit. The vehicle body system includes: a second data communication unit; and a road surface evaluation unit that evaluates the road surface condition. The tire-mounted device transmits an advertise signal including the road surface data indicative of a result of a waveform process on the detection signal and a waveform processing value corresponding to the road surface condition. The vehicle body system evaluates the road surface condition based on the waveform processing value.