What is a data logger for pavement monitoring?
A pavement data logger is an outdoor instrument that reads sensors installed in or under a road, such as strain gauges, temperature sensors and pressure cells, and stores the readings with a timestamp. Unlike a general-purpose logger, it has to capture very fast events, such as a truck axle passing in a fraction of a second, as well as slow changes like frost and thaw over weeks.
Which sensors can the MT-16 data logger read?
Full-bridge strain gauges (6-wire or 4-wire), half- and quarter-bridge gauges with completion in the probe connector, PT100 and PT1000 temperature sensors, bridge-type pressure cells and load cells, RS-485 Modbus sensors powered from the port, and 4–20 mA or voltage transmitters through an adapter. Vibrating-wire sensors connect through an RS-485 interface module.
How does plug-in probe identification work?
Each MT-16 probe cable carries a small memory chip in its connector with the sensor type, wiring and calibration. When the probe is plugged in, the logger reads it and configures the port. Existing sensors can be given an identity by fitting an adapter cable with the chip.
How does the data get from the site to the office?
MT-16 uploads data over the 4G cellular network every day. It also keeps a copy on local storage inside the enclosure, and a technician can connect a laptop through the USB-C service port.
How is the logger powered?
From a 24 V DC supply. That can be a mains adapter where power is available, or a solar panel with a battery and charge controller at remote sites.
Does it work in Canadian winters?
MT-16 is designed for cold-weather operation and uses parts selected for low temperatures. Winter field testing is part of the current prototype program.
Can it record individual truck passes?
Yes. A roadside vehicle trigger starts a high-rate recording on all channels for each heavy vehicle, including the moments before it arrived. Between events the logger records slower data on a schedule.
Can the MT-16 run at an off-grid site?
Yes. We design complete off-grid stations with a solar panel, a battery and a charge controller sized for the shortest winter days at your site. The logger sleeps between measurements to keep consumption low, and the battery is kept in an insulated, heated box so it can charge safely in the cold.
How is data collected where there is no cellular coverage?
The logger keeps a full copy on local storage. For remote sites we are developing drone retrieval, where a drone flying the route downloads each station over a short-range wireless link, and we can add a satellite status message so you know each station is running.
Is MT-16 available now?
MT-16 is at the prototype stage. We are working with a small number of pilot partners on first field installations. Contact us to discuss a site.