LS-G6-VW-RCR

Vibrating Wire RCR

Ultra-robust 5-channel data logger designed to be embedded in pre-cast concrete. Connect vibrating wire instruments easily and securely such as strain gauges, pressure cells and any other vibrating wire sensor. Monitor structural health of your infrastructure from as early as the concrete segment manufacturing stage.

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Worldsensing Edge Device

Vibrating wire RCR

A wireless data logger designed to be embedded in concrete for remote monitoring of precast concrete infrastructure

Designed to be embedded directly into concrete since the tunnel segment manufacturing

  • Rugged polymer casing that withstands pressure emitted by concrete. 
  • Re-enterable insulating resin to protect electronic components
  • Can connect to strain gauges, load cells and any other vibrating wire sensor

Excellent communication range

  • With an embedded antenna to ensure wireless communication.
  • Can be connected to a gateway located at 3km under straight, clear conditions

Low maintenance, low-power solution

  • C-type 2-battery pack which can last up to 10 years at a sampling rate of 6 h.
  • Minimal maintenance required.

A closer look

Key features of the VW-RCR

The interior of the VW-RCR is filled with an insulating resin that protects its electronic components from concrete particles during manufacturing and water exposure during its lifetime

the data loggers components before pouring the insulating resin. The internal, whip antenna allows for wireless, remote communication

the USB port of the VW-RCR is always accesible for configuration purposes

The VW-RCR can be connected to five vibrating wire sensors, such as strain gauges or load cells

HOW IT WORKS

From sensor-to-edge-to-cloud

Simplify your projects through remote, automated monitoring.

DATA COLLECTION

Get data from as early as the manufacturing process of pre-cast concrete segments at the preferred sampling rate

CONNECTIVITY MANAGEMENT

Manage all deployed devices, data and networks through Worldsensing's Connectivity Management Tool

DATA VISUALIZATION AND ANALYTICS

Integrate third-party data visualization software for easy data analytics.

Downloads

Datasheet - Vibrating wire

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DEVICE COMPATIBILITY

Sensors that Loadsensing edge devices integrate with

strain gauge illustration

Strain Gauge

load cell illustration

Load cell

Videos

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FAQ’s

01

What is the main use of the VW-RCR?

The VW-RCR is very well suited for tunnel construction when using tunnel boring machines (TBM) and concrete tunnel linings. Using data loggers that are embedded in tunnel linings during the manufacturing process significantly reduce the tasks and time needed to deploy standard monitoring solutions after the TBM has passed. Additionally, the VW-RCR provides critical information about the manufacturing process and the loads withstood by the concrete segments during construction and the structure’s lifetime.

02

Why do you say it is designed to withstand concrete?

There are two major components: first, the plastic case that is designed to withstand wet concrete, and second, the insulating resin that seals off the VW-RCR components. These two components are vital to the necessary robustness of the VW-RCR when it is being embedded in wet cement during concrete segment manufacturing.

03

How is this device different from the existing Vibrating Wire Data Logger?

The VW-RCR differs from Vibrating Wire 5-channel data logger in that the insulation provided in the VW-RCR makes it an IP68 rated device, which means it features a higher resistance to water and can be embedded in concrete. In addition, the communication ranges are achieved by an internal whip antenna, instead of a standard external antenna. Finally, the barometer is not functional, which the standar VW-5ch does.

04

How are the long-range communication capabilities affected by being embedded in concrete?

During tunnel construction, the radio range is mainly affected by the interferences of the TBM itself. Once the TBM is removed and the tunnel is in completed, the radio range from a device to the nearest gateway can be up to 3 km in a straight line and 800 m in curved tunnels.

05

How does the device configuration work?

Once securely placed in the precast frame and before the cement is poured into the mold, the VW-RCR can be configured through the Worldsensing App via USB cable.

06

What does “re-enterable insulating resin” mean?

The resin used to insulate the VW-RCR has a gel-like consistency that can be cut and removed once it sets. The circuit board, connectors and batteries are this way accessible, even after the case is sealed with the resin.

07

How is the insulating resin applied?

Once the VW-RCR is connected to the corresponding sensors, the gel is poured over the circuit board, allowing it be fully covered. The resin sets in 24 hours for a full insulation of the device against water and wet cement particles that could enter while wet.

08

How can I access the device once it is embedded?

For configuration purposes, the USB port can be accessed by opening the lid of the VW-RCR. If the device is already embedded, the concrete layer covering the device lid must be chiseled out in order to access the device lid.

09

What configurations of CMT can be used?

Both CMT Edge and Cloud can be deployed for the data management of the VW-RCR

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