Remote monitoring system for structures using IoT sensors (LIRIS) [NETIS No. KT-200126-A].
Remote Monitoring Technique
The time has been changing from "field measurement" to "remote monitoring".LIRIS by OSMOS Technology Association
Please leave remote monitoring to DAINICHI. We will work on it.
The time has been changing from “field measurement” to “remote monitoring”.
We will provide remote monitoring services.
Best suited to the below scenes:
LIRIS technique monitors irregularities continuously at remote sites and construction sites through fully automated measurement using IoT.
The measurement data is transmitted every hour via cellular phone lines, allowing us to monitor without going to the site.
If the monitoring index exceeds a threshold value, an alert email will be sent to the user.
Best suited to safety monitoring during construction
- Monitoring of deflection and inclination of support structures and temporary cofferdams during construction.
- Monitoring of deformation of subject facilities during adjacent construction.
For Example:
- Want to monitor the inclination of temporary bents during construction to ensure safety
- Want to monitor the adverse effects on the nearby facilities during construction
Best suited to the monitoring of deformation of existing damaged or deteriorated structures
- Monitoring of deflection and crack propagation on main girders and deck slabs
- Monitoring of movement and inclination of bridge abutment and pier
- Monitoring of deformation of tunnel cross section
- Monitoring of deformation and crack propagation of structures
For example:
- Want to constantly monitor the deformation of bridge deck slab until strengthening measures are taken.
- Want to monitor the deformation and crack propagation of the retaining wall until the next inspection.
Best suited to the maintenance, from understanding the extent and severity of the deterioration of existing structures to evaluating the effects of strengthening
- Measurement of dynamic behavior to determine the degree and frequency of stresses
- Measurement of strain data by static and dynamic loading tests
- Measurement of data before and after the strengthening measures to verify its effects
For Example:
- Want to understand the strain and stress state of bridges with heavy traffic.
- Want to assess the load-bearing capacity of a bridge through loading tests and determine whether or not strengthening is necessary.
- Want to measure strains before and after strengthening to verify its effects.
What is LIRIS？
LIRIS (Live Independent Remote Inquiry System) is a structural monitoring tool based on IoT technology developed by the French company OSMOS.
The combination of a high-precision optical sensor using optical fiber with a high-performance battery and a portable communication module enables us to conduct full-scale continuous monitoring of structures at low cost and with ease.
Features of LIRIS
No Power Supply, Easy Installation
LIRIS does not require an external power supply and a communication cable connection that allows us to install the device on the subject structure in a short time. The high-performance battery keeps the system operating autonomously for up to two years.
In areas where cellular phone service is not available, data can be retrieved from both extensometer and inclinometer by a personal computer via short-distance wireless communication.
Fully Automated Measurement by IoT
By connecting the SMS module to the LIRIS sensor, measurement data is uploaded to the Internet automatically every hour. There is no need for users to go near the site.
If the monitoring index exceeds a predetermined threshold value, an alert email will be sent to the user.
Data Management on Cloud Server
The measurement data is centrally managed on a server administered by OSMOS.
Its results can be checked from anywhere with an Internet connection.