MTI

High-precision indoor positioning system

Products

IntraWave

Three characteristics of this high-precision indoor positioning system boasting a 30 cm margin of error

IntraWave is able to achieve high-precision use via smartphones or terminals and can cover large indoor spaces, making positioning possible in a wide range of fields, including factories, warehouses, exhibition halls, and stadiums.

Three characteristics of IntraWave

  • Absolute positioning using ultrasound

    Ultrasound emitted from speakers can be received by smartphones to achieve absolute positioning within buildings with high precision, i.e., a 30 cm margin of error.

  • Concentrated management of large-scale positional data

    A server-side database provides concentrated management of positional data measured by smartphones, enabling the realization of both an analysis system (e.g., for congestion comparison at each reproduced flow area) and operations management system (e.g., for grasping work and worker movements).

  • For large spaces with high ceilings

    High-precision positioning has been achieved even in large indoor spaces that proved difficult using previous technologies. Includes support for high ceilings with positioning accuracy remaining unaffected.

System configuration diagram

The system configuration comprises a “ceiling-installed speaker (ultrasonic beacon)” to transmit ultrasonic positioning signals, a “beacon controller” to manage ultrasonic beacon operation, a “support server” that supports positioning calculations via a smartphone that receives a position signal and performs positioning calculations, and a “measurement log database server” to manage and utilize the measured data.

System configuration diagram

Image showing ultrasonic beacon installation

Installation intervals for ultrasonic beacons differ according to the installation environment.
The ultrasonic beacon is supplied with power from the beacon controller via RS-485 lines using LAN cables.

Image showing ultrasonic beacon installation

Solution case study

1. Achieve “visualization” of work in large indoor spaces

Smartphones of workers at a given worksite measure their locations at intervals of one second or less
Enables you to immediately see where everybody is

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Monitoring can be performed via a variety of devices.

The overall work area can be constantly monitored and checked using large monitors, notebook PCs, tablets, smartphones, and other such devices.

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Visualization Merit

  • 1.Instantly reallocate personnel for irregular work.

    When it is necessary to handle the unplanned receipt of goods or required maintenance, the real-time allocation of personnel can be immediately seen, enabling reallocation to be directed and carried out appropriately.

  • 2.Precise guidance for inexperienced workers.

    Clear navigation for inexperienced workers, enabling an efficient and powerful strategy

  • 3.Enables instant understanding and guidance regarding dangerous operations and work affecting safety standards

    As the movements of workers are constantly tracked, it is possible to avoid dangerous operations that could affect safety standards, thereby ensuring worker safety.

  • 4.Control access to dangerous areas to prevent accidents from happening.

    When a worker without the necessary credentials enters a predefined dangerous area, an alarm is immediately sounded to prevent accidents.

2. Analyze worker movements and their work using positional and temporal information

With one-stop management of measured positional and temporal information via the server, performing various types of analysis and ensuring an efficiently managed worksite is possible.

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Manage and collate positional, temporal, and locale information.

Manage locale information (e.g., region, building, number of floors, location, etc.) in addition to positional and temporal data, thus, enabling a more detailed analysis.

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Analysis Merit

  • 1.Analyze the flow of people and trucks. This can be utilized in the work that follows.

    By reproducing the flow, identifying and analyzing the points that become bottlenecks to overall progress (concentrated areas of trucks and people).

  • 2.Create statistics for actual work performed, which can assist cost management.

    Measure the time spent and distance covered for each personnel member, statistically tracking each of them, thus, enabling checks to ensure there is no waste in operation to determine whether the number of personnel matches the volume of work and to predict whether improvements based on the calculated statistics can be expected.

  • 3.Archive work logs, contributing to labor-saving procedures and increased efficiency.

    Store work records for facility inspections (e.g., inspection photographs and positional information), leading to improvements in work efficiency.

  • 4.Contribute to improvements in quality by checking work and the consistency of manuals.

    Improve the quality of work completed by analyzing whether the work process is being executed according to the manual based on the work log.

Case Study of indoors

1. Case of an assembly factory (example)

The locations of both products and people can be measured in large factories with high ceilings.

Expected issues:Distribution center【worker management/analysis of packing workflow】
Receiver Transmission of location information using an ultrasonic beacon
Receiver Android terminals used for worker receivers
Worker management Manage the work location of the worker in real time
Work analysis Accumulate data on past workflows, retention time, and so on to analyze work improvements
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Administrator-side devices (smartphones, tablets, PCs, etc.)
  • Worker management
    (real time)

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  • Work analysis
    (log analysis)

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Product location during assembly manufacturing can be accurately measured. The state of progress and personnel work can also be visualized in real time on a per product or process basis. Furthermore, through positioning log analysis, required man-hours and personnel for the assembly of each product can be visualized, enabling both process improvements and the evaluation of implemented improvements.

2. In the case of a distribution center (example)

Possible to understand the positions of workers in real time and respond to unforeseen events, work, or problems.

Expected issues:Distribution center【worker management/analysis of packing workflow】
Receiver Transmission of location information using an ultrasonic beacon
Receiver Android terminals used for worker receivers
Worker management Manage the work location of the worker in real time
Work analysis Accumulate data on past workflows, retention time, and so on to analyze work improvements
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Administrator-side devices (smartphones, tablets, PCs, etc.)
  • Worker management
    (real time)

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  • Work analysis
    (log analysis)

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By linking to other systems, it is possible to see worker attributes (e.g., qualifications possessed, tasks, attendance records, etc.), thereby assigning personnel to unforeseen work or problems that arise. Furthermore, using the positioning log, it is possible to discover problems in freight and equipment allocations and optimize these allocations.