Adaptive Detection Frequency for Bicycle Sensor Power Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bicycle-measuring sensors consume excessive electric power due to frequent measurements, which are not necessary for all riding states, leading to inefficient power usage.
Innovation Solution
A bicycle-use measuring apparatus with a sensor and controller that adjusts detection frequency based on the rotational state of the bicycle, using a rotational state detector like a dynamo or magnetic sensor to optimize measurement intervals and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the measurement interval is set to be short to obtain sufficient measurement accuracy, then measurement precision is improved, but electric power consumption increases
Solution Approach 1:
The patent applies dynamics by making the detection frequency of the sensor adjustable rather than fixed. The controller dynamically changes the detection frequency based on the rotational speed of the rotating part, allowing the system to adapt measurement intervals to actual riding conditions. This resolves the contradiction by enabling short measurement intervals only when necessary (at high speeds) while using longer intervals when not needed (at low speeds).
Solution Approach 2:
The patent changes the parameter of detection frequency based on rotational speed. When rotational speed exceeds a threshold, the controller sets the detection frequency to a higher value; when rotational speed is below the threshold, it reduces the detection frequency. This parameter adjustment directly addresses the contradiction by matching measurement intensity to actual motion intensity.
2Measurement precision
If the detection frequency is increased to capture rapid changes in physical quantity, then measurement accuracy is improved, but electric power consumption increases
Solution Approach 1:
The system dynamically adjusts detection frequency based on rotational speed. During rapid changes (high speed), the detection frequency increases to capture the changes accurately. During stable states (low speed), the frequency decreases to conserve power. This dynamic adaptation resolves the contradiction between capturing rapid changes and reducing power consumption.
Solution Approach 2:
The patent implements periodic measurement action where the detection frequency is periodically adjusted according to rotational speed thresholds. The controller compares rotational speed at regular intervals and adjusts the detection frequency accordingly, creating a periodic control cycle that balances accuracy and power consumption.
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
The apparatus achieves sufficient measurement accuracy while minimizing electric power consumption by adapting detection frequency to the bicycle's rotational state, ensuring accurate data collection without unnecessary measurements.
Implementation Method 1
using a rotational state detector like a dynamo or magnetic sensor
Implementation Method 2
using a rotational state detector like a dynamo or magnetic sensor
Data Source
AI summary
A bicycle-use measuring apparatus includes a sensor and a controller. The sensor is configured to be installed on a bicycle having a rotating part. The controller is operatively connected to the sensor. The controller adjusts a detection frequency of the sensor in accordance with changes in a rotational state of the rotating part.