Vehicle Position Measurement System with State-Based Control

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Solution Overview

Problem

Conventional vehicle control systems face challenges in reducing power consumption when measuring the relative position of a mobile terminal with respect to a vehicle for remote operation, especially when the mobile terminal is outside the vehicle's communication area.

Innovation Solution

A position measurement system that includes a vehicle communication unit and a position measuring unit, with a position-measurement-necessity determining unit that determines whether to measure the relative position based on the mobile terminal's state, only initiating measurement when necessary, thereby reducing unnecessary power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the position measuring unit continuously measures the relative position of the mobile terminal when it enters the out-vehicle communication area, then the remote operation function is reliably provided, but the power consumption increases

Engineering Contradiction:

Improveremote operation function reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary determination of whether position measurement is necessary before actually measuring. The position-measurement-necessity determining unit evaluates terminal state information (locked state, non-operation state, electronic-key-application operating state) in advance to decide whether to activate the position measuring unit, avoiding unnecessary measurements while ensuring measurement occurs when needed for reliable remote operation

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The mobile terminal itself provides the decision-making capability through the position-measurement-necessity determining unit that evaluates its own state. The terminal autonomously determines whether position measurement is necessary based on its current state (locked, non-operation, or electronic-key-application operating), eliminating the need for continuous external monitoring and reducing overall system power consumption

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS11762101B2Position measurement system, position measurement method, position measurement instruction method, recording medium with position measurement instruction program recorded, and vehicle control apparatus

Publication Date: 2023.09.19 HONDA MOTOR CO LTD

AI summary

A relative position of a mobile terminal with respect to a vehicle is measured. The mobile terminal includes a position-measurement-necessity determining unit and a position-measurement control unit, and the position-measurement-necessity determining unit determines whether it is necessary to measure the relative position depending on whether the mobile terminal is in a predetermined state when the mobile terminal enters from the outside to the inside of an out-vehicle communication area of a first vehicle communication unit. The position-measurement control unit causes a position measuring unit provided in the vehicle to measure the relative position when the position-measurement-necessity determining unit determines that it is necessary to measure the relative position.