WirelessArray

$1,499

WirelessArray™ is a field-deployable, wireless data-acquisition system for ground-test arrays, applicable in noise-source localization or beamforming measurements such as those encountered during airframe noise flyover measurement tests.

Adaptable, field-ready wireless acoustic sensor arrays

Greatly reduces recurring costs associated with array deployment by eliminating miles of cable runs to individual nodes and removing the need to protect each sensor against impending weather events through its environmentally hardened enclosure.

The WirelessArray system is composed of four major components:

  1. the Wireless Sensing Nodes,
  2. the Central Sensing Plate (optional),
  3. the Field Data-Collection Architecture, and
  4. the Data-Collection Server.

The Wireless Sensing Nodes are standalone Wi-Fi enabled weatherproof devices with a user-replaceable sensor module, data transmission and time synchronization hardware, and an ample battery with solar and USB-C charging capabilities. These nodes may be used, for example, as the distributed measurement points along the arms of an array spiral.

The Central Sensing Plate is used in the center of the measurement array to provide a way to tightly space sensors in a single, customizable apparatus. The Central Sensing Plate is customized for each system to meet the specific needs of the customer. Interchangeable multi-microphone array “petals” are installed flush with the plate surface and are connected to the data-collection system with a single wired ethernet cable. The Central Sensing Plate is optional and is typically only needed for applications where a dense configuration of microphones is required such as for a high frequency, small aperture array.

Each system also requires a data-collection system to acquire and store the synchronized sensor data streams. This system is subdivided into the Field Data-Collection Architecture and the Data-Collection Server.

The Field Data-Collection Architecture is a custom configuration of one to many low-profile, environmentally hardened, off-the-shelf wireless access points (WAPs). Each WirelessArray’s Field Data-Collection Architecture is customized to meet customer requirements for data transfer speed, array size, and live data viewing.

The Data-Collection Server is the computer that is placed at a location from which the data acquisition system will be operated. It communicates with the Wireless Sensing Nodes and Central Sensing Plate to orchestrate data acquisition and data management such as retrieving data from the individual sensing nodes. A system interface (GUI) and example computer code are provided with each system for the client to use as-is or to customize and incorporate into their larger data processing architecture.

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Select a Wireless Sensing Node, Central Sensing Plate, Field Data-Collection Architecture, and Data-Collection Server options and then select the “Add to Quote” button.
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SKU: DAQ-1020-NDE Category:

Lead Time and Pricing

Lead Time

12-36 Weeks – dependent upon quantities selected and system complexity

WirelessArray Connection Diagram
avec wireless array partnership flyer link

Click here to see AVEC’s Phased Array Software for Acoustic Flight Tests, featuring: Aircraft Tracking | Data Pre-Processing | Deconvolution | Directivity Calculations | EPNL Estimation | Report Generation

Good Data Acquisition: How do you know you are getting good data?

WirelessArray is a GPS time-synchronized wireless array of distributed nodes with interchangeable sensor interfaces measuring and communicating high-fidelity data back to a centralized data acquisition server.

Through validation testing and small-scale test deployments, the system has demonstrated its ability to meet acoustic bandwidth, dynamic range, time synchronization, environmental, and battery life requirements for typical ground-test array deployments.

Features

  • Wirelessly time synchronized via GPS to maintain simultaneous sampling across the full array.
  • Environmentally hardened enclosures protect against the elements during long-term deployments.
  • Capable data acquisition system with real-time monitoring software.
  • High SPL MEMS microphone module available.
  • Built-in TEDS to assist with accurate, consistent calibration.
  • Low-noise analog front end.
  • Interchangeable sensor modules.
  • Integrated temperature sensor outputs.
  • Dedicated acquisition processor and embedded communication and control system.
  • Solar panels and LiPo battery power for in situ recharging during long deployments.
  • Smart power systems that automatically switch between battery, USB-C wall power, and solar power depending on current conditions and configurations.
  • System and battery health monitoring.
  • 4 GHz wireless communication.
  • SD card for local storage on each node.
  • USB port for field-technician use and system diagnostics.
  • External antenna for long range wireless communication optionally available for expansive systems.

Benefits

  • Order of magnitude faster deployment over wired systems saves time and money.
  • Easily expandable and adjustable array size (meters to kilometers) and shape.
  • Low acquisition cost per channel relative to existing solutions, enabling significant additional measurement capabilities (larger arrays and more channels) while preserving budgetary limitations.
  • Each microphone module provides a temperature sensor output to allow for temperature compensation.
  • No site power infrastructure required.
  • All-in-one measurement solution that can be used repeatedly in diverse testing scenarios.
  • All system components are user-serviceable to ensure reliability during critical testing windows.
  • Lower (recurring) cost array deployment including:
    • Elimination of the need to run cables for every sensor
    • Robustness against the environment, eliminating the need to cover and uncover the array each day of use (and to rapidly scramble to cover the array when inclement weather occurs mid test)

Applications

  • Flyover phased array measurement
  • Full-scale airframe noise source testing
  • Engine stand noise testing
  • Beamforming
  • Sonic boom arrival detection
  • Wind energy noise source localization
  • Ramp noise testing

Sensor Housing Details

  • Housings (IPX7) and microphones (IP55) are environmentally hardened
  • Gasketed and removeable microphone module
  • Top embedded solar panels
  • USB-C charging and diagnostic port
  • Display screen showing system status information

Software

  • Browser-based GUI system
    • Each node hosts its own web site/interface
    • Minimizes additional required software
    • Allows multiple endpoints to be used to configure nodes (e.g., cell phones, tablets)
    • Quick and reconfigurable design to allow customization for specific use cases
  • Orchestration software
    • Installed on customer’s computer system
    • Application programmed in Python with web front-end to control one node, a subset of nodes, or all nodes simultaneously
    • Assists with
      • Hardware management
      • Troubleshooting
      • System calibration
      • Data acquisition
      • File storage and export
      • API for end users to develop custom data acquisition applications

Please contact IC2 for more information regarding system specifications.

Please contact IC2 for product datasheet and user manual.

Related Publications

A Field-Deployable Wireless Data Acquisition System for Ground-Test Arrays

Related Projects

Field Deployable Wireless Data Acquisition System for Ground-Test Arrays

Wireless Instrumentation for Rocket Applications

MEMSonic Boom: Sensing and Acquisition for Sonic Boom Flight Research

Frequently Asked Questions

What is the WirelessArray system?

The WirelessArray system is a field-deployable array of data acquisitions systems that are either housed in a single channel enclosure, which is called a node, or in a high-density multi-channel enclosure. Each data acquisition channel is fit with a user-replaceable sensor and wireless/or wired communications hardware to share data back to a central data server.

What is the purpose of the Central Sensing Plate?

The Central Sensing Plate allows measurement scientists to get a tight grouping of sensors at the center of an array. These plates are designed around wired communication as compared to wireless but appear transparently onto the rest of the wireless system network infrastructure. The system is fully customizable to meet your test and measurement needs. The Central Sensing Plate is an optional feature and is not necessary for array deployment.

How is the WirelessArray deployed in the field?

Nodes are placed and locations surveyed by your installation team. IC2 has accessories available that magnetically attach to the Wireless Sensing Nodes to assist surveyor's measurements in the field. Wireless access points are distributed throughout the array to control and collect data from the wireless nodes. Additional installation details specific to your array are provided throughout the customization and production of orders.

What are the benefits of using a wireless system over a wired system?

By eliminating the need for cabling to connect each measurement node, the end user saves time and money in labor and materials in the setup, deployment, and teardown process. Additionally, the nodes are environmentally hardened to withstand weather events over a long deployment. Note: Microphones require a period to dry all moisture before use to ensure accurate measurements. If your testing schedule does not allow for drying time, then magnetically adhered microphone covers are optionally available.

How customizable is the WirelessArray system?

The WirelessArray system is fully customizable to meet your measurement goals. The Central Sensing Plate and specific Field Data-Collection Architecture is unique to your array and is designed specifically for the intended testing setup.

Can the array size and shape be adjusted after purchase?

Yes, additional Wireless Sensing Nodes may be added to expand your array in density or diameter. Additional wireless access points may be needed depending on the size of the geographic expansion.

How is the pricing structured for the WirelessArray system?

The Wireless Sensing Nodes are priced individually. The Central Sensing Plate, Field Data-Collection Architecture, and Data-Collection Server are highly specific to the test setup and as such are custom priced during the quoting process. Our team is available to meet and discuss your specific testing environment to create a tailored measurement solution.

What software is provided with the WirelessArray?

IC2 provides a per node web page interface and a PC based GUI orchestration software to interact with the array as a whole. IC2 additionally partners with AVEC, Inc. to provide their Phased Array Software for Acoustic Flight Tests, featuring: Aircraft Tracking, Data Pre-Processing, Deconvolution, Directivity Calculations, EPNL Estimation, and Report Generation.

Can the WirelessArray be used in adverse weather conditions?

While the WirelessArray nodes are environmentally hardened, it is recommended that the microphones be dry when running the measurements to ensure accurate acoustic data and calibration.

How is time synchronization achieved in the WirelessArray system?

The WirelessArray system leverages GPS technology to time-synchronize data acquisition start and end times to ensure all nodes are gathering data simultaneously.