Route Guide Data Creation Device for Bus Timetables

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Solution Overview

Problem

Current navigation systems for vehicles traveling on predetermined routes, such as route buses, lack the ability to create and utilize route guide data similar to train timetables, as they cannot accurately account for actual travel times due to traffic and weather conditions, making existing timetables unreliable for route guidance.

Innovation Solution

A route guide data creation device that acquires and processes travel data from vehicles to calculate and store arrival and departure times for each stop, creating route guide data similar to a train timetable, which is then stored in a database and distributed to mobile terminals based on conditions like weather and date, allowing for accurate route guidance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a timetable is created for route buses based on scheduled departure times, then the route guide can be provided in advance, but the timetable becomes unreliable due to traffic and weather conditions affecting actual travel times

Engineering Contradiction:
Improvetimetable reliabilityVSAvoidtravel time accuracy
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The system collects travel data in advance during a predetermined period before the target date, storing actual departure and arrival times for each vehicle and stop. This preliminary data collection enables the creation of a reliable timetable that reflects real operating conditions rather than theoretical schedules.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system continuously collects feedback from actual vehicle operations including departure times, arrival times, and vehicle positions. This feedback is processed to calculate actual travel times between stops, which are then used to create and update timetables, ensuring they reflect current traffic and weather conditions.

Inventive Principle:
Principle #23Feedback

2Measurement precision

If travel data is collected from multiple vehicles over a predetermined period, then the route guide data becomes more accurate, but the data processing complexity increases

Engineering Contradiction:
Improveroute guide data accuracyVSAvoiddata processing system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system segments travel data by vehicle ID and stop code, organizing departure and arrival times into distinct data groups. This segmentation allows for systematic processing of large volumes of data from multiple vehicles without overwhelming complexity, enabling separate analysis and calculation of travel times for each route segment.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system performs preliminary organization of travel data during the collection phase, storing data in a structured format with vehicle IDs, stop codes, departure times, and arrival times. This preliminary structuring simplifies subsequent processing steps, reducing the complexity of data analysis and timetable generation.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If the route guide data is updated to reflect actual travel conditions, then the navigation accuracy improves, but the data collection and processing time increases

Engineering Contradiction:
Improvenavigation accuracyVSAvoiddata collection time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system collects and stores travel data in advance during a predetermined period before the target date is reached. This preliminary data collection and storage eliminates the need for real-time data gathering, allowing the system to generate accurate timetables without time loss during the actual navigation period.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system collects travel data periodically over a predetermined period, accumulating sufficient data to create accurate timetables. This periodic data collection approach balances the need for accurate navigation information with the time required for data gathering, allowing processing to be completed before the target date.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentUS7869939B2Route guide data creation device, route guide data creation method, and route guide distribution device
Publication Date: 2011.01.11 NAVITIME JAPAN CO LTD
  • US7869939B2 patent drawing
  • US7869939B2 patent drawing
  • US7869939B2 patent drawing

AI summary

A route guide data creation device for acquiring travel data transmitted from a vehicle traveling on a road according to a predetermined travel route and travel time and creating route guide data according to the data. The route guide data creation device acquires the travel data over a predetermined period of time. A travel data processor receives data based on a predetermined input format from the travel data and calculates the arrival time and departure time at/from each stop for each travel routes and for each vehicle ID. A route guide database stores the route guide data including the departure time and the arrival time of each vehicle from/at each stop outputted from the travel data processor.