GPS monitoring for construction machinery - fuel, engine operation and fleet control

The excavator is on the right construction site. That is important information, but the business owner wants to know more. How much fuel is left in the tank? Does the last refueling match the delivery? Is the engine running, or has only the ignition been left on? And after the end of the day, is someone draining fuel right now?

GPS monitoring for construction machinery should help answer these questions. Location, work zones, fuel control and actual engine operating time create a picture of what is happening with the equipment. Only on this basis can you decide whether you need to arrange refueling, explain a long stop with the engine running, or respond to a suspicious fuel loss.

Behind Multiflota is a team with 30 years of experience in installing telemetry systems - also in older construction machines, where you cannot rely on ready-made data from factory electronics. We have our own devices, our own installers and our own equipment for calibrating tanks after fuel probes are installed. This means we are responsible for the entire process: from installation in a specific machine to the data you use to make decisions.

At Multiflota, we are extending this model with automatic event analysis. The system works in the background and draws the user's attention to situations that require action. You do not need to watch the map all day or search charts for irregularities on your own.

Fuel control - information while there is still time to respond

For construction machinery, fuel control is one of the main reasons for implementing telemetry. What matters is the current amount of fuel in the tank, refueling volumes, consumption during operation and losses that cannot be explained by normal use.

However, a fuel level chart alone leaves much of the work to the user. Someone has to open it, notice the drop and check the circumstances. If they do it the next morning, the chance for a quick response has already passed.

That is why Multiflota monitors fuel both while the machine is working and while it is parked, even after the engine is switched off. The analysis runs in the background. When the system detects a suspicious change, it starts assessing the event and can warn the user even before that analysis is complete.

We split the response into two stages:

• Early warning: the system has detected a concerning change in fuel level. The user receives information that the machine is worth checking.
• Event confirmation: after collecting and analyzing the data, the system provides the verification result and the estimated size of the loss.

This split combines speed of response with reliable information. You do not have to wait for the final calculation to look into an event. At the same time, we do not present the first suspicion as confirmed theft.

The notification can be sent through a configured channel, for example SMS, WhatsApp or Telegram. You do not need to have the app open at the time. Delivering information in real time, of course, requires the machine to be connected to the system.

The same control covers refueling. Information about when and by how much the fuel level increased provides a basis for comparison with the declared delivery. The current tank level also helps plan the next refueling before a lack of fuel stops work.

Accurate fuel measurement starts with installation

Reliable fuel measurement starts in the machine, before the first data appears in the application. The choice of probe, where and how it is installed, and calibration of the specific tank all matter. The quality of this work determines how well the system defines the amount of fuel, the size of refueling and the scale of any loss.

At Multiflota, we have our own installers and our own equipment for fuel calibration after the probe is installed. Calibration links the probe readings to the actual amount of fuel in the tank. This is important because the same change in fuel level does not mean the same number of liters in every tank.

For the machine owner, this translates into concrete questions: does the amount of fuel refueled match the delivery? How much was actually lost during a suspicious event? Is there enough fuel for further work? The answers will be as reliable as the measurement they are based on.

Experience is especially important in older machines

Our team has been installing this type of equipment for 30 years. This experience covers both new machines and older designs, where electronic data is not available and installation requires an individual approach.

In this kind of equipment, fuel control is often especially needed. The machine still does its work and consumes fuel, but the owner has little information to check what is happening with the tank. Simply connecting a GPS tracker will not solve this problem.

Our own equipment, installers and calibration facilities allow us to match the solution to the machine's actual design. We do not make fuel control depend solely on whether the manufacturer provided the option to read the relevant data.

Good measurement also requires analysis

A correctly installed and calibrated probe is the foundation. The next step is interpreting its readings during everyday operation.

The machine works on uneven ground, tilts and vibrates, and fuel moves around in the tank. That is why a temporary change in the reading should not automatically trigger a theft alarm.

Multiflota analyzes the course of changes and the circumstances of the event to reduce false alarms. When a loss is suspected, the system warns the user. After verification, it provides the analysis result and the estimated amount of missing fuel.

In this way, installation, calibration and software work toward one result: information you can use to check the situation and take action.

Ignition on does not mean the engine is running

In a car, the ignition signal can be a useful approximation of vehicle usage time. In a construction machine, this simplification can lead to wrong conclusions.

The operator arrives in the morning and switches on the ignition. During the day, they start and stop the engine several times, leaving the ignition on. A system that bases its report only on this signal may count the entire period as engine operation.

As a result, the owner receives a number of hours that does not match the machine's actual operation. This makes it harder to assess its utilization and understand fuel consumption.

You need to distinguish between several states: ignition on with the engine off, engine idling, and operation at higher RPM.

Multiflota uses a sensor developed by us that makes it possible to obtain information about engine operation independently of the ignition signal alone. This allows the report to show when the engine was actually running and how much of that time it spent idling.

This is the basis for discussing costs and work organization. Long idle periods can be checked: did they result from technical requirements, waiting for transport, downtime on site, or operator habits?

Monitoring also for older machines without available CAN data

A construction fleet rarely consists only of new machines from one manufacturer. Alongside a several-year-old excavator, there may be equipment that is several decades old and still does its job well.

In newer designs, some information can be read from the CAN bus. In older machines, the relevant data may be unavailable or require a different approach to obtain. A solution based solely on factory electronics will not cover the entire fleet in the same way.

Our own sensor lets us monitor engine operation also where such readings cannot be used. We match the installation method to the machine design, instead of making monitoring depend on its year of manufacture and electronic equipment.

For the owner, this means one system can cover both new and older machines. The age of functional equipment should not in itself exclude control of its use.

GPS position and work zones - where the machine is and whether it should be there

Location remains the foundation of construction machinery monitoring. With equipment spread across several projects, you need to know which site a given machine is on and whether it remains within the designated area.

A zone drawn on the map lets you define the construction site, base, or another work location. It makes it easier to check which machines are in a given location and detect when they leave the agreed area.

At the same time, remember that a machine standing in one place may be working intensively. An excavator does not have to move across the map to perform a task. That is why position should be compared with actual engine operation and fuel information.

Only these data together make it possible to understand the situation: the machine is on the right site, its engine is running, and there is enough fuel for further work - or, conversely, one of these elements needs attention.

Connectivity in the field is just as important as location

Determining GPS position and transmitting it to the user are two different tasks. A device may know its location, but without a cellular network connection it will not send it to the system in real time.

This matters on remote construction sites, in pits, and in places with difficult radio conditions. The icon on the map should be read together with information about how current the data is. The last known position is not the same as an online position.

At Multiflota, we are developing our own telemetry device using LTE. Our own hardware, in-house engineering team, and software allow us to work on the entire solution: from acquiring data in the machine to transmitting and analyzing it.

Reliable communication requires more than a technology label on the housing. Network conditions at the work site, antenna installation, and the way the device is mounted all matter. That is why the choice of solution should take into account the terrain where the machines actually operate.

For the fleet manager, it is also important to know when data has stopped coming in. Lack of communication requires checking, but in itself it does not prove a device failure - it may also be caused by lack of coverage or power.

Ask about machines in ChatGPT or Claude

Access to data does not have to mean another login and browsing several reports. Often, you simply need an answer to the question: “What is happening with my fleet right now?”.

Multiflota enables the system to be connected with ChatGPT or Claude through an MCP-based connector. Once the connection is configured and authorized, the user can ask about machine data without opening the telemetry panel every time.

They can ask:

• “How many machines are working now, and how many have the engine switched off?”
• “Which machines are outside the designated zones?”
• “Which devices are we not receiving current data from?”
• “Have any suspicious fuel losses appeared since yesterday?”
• “Where is excavator WZB3425?”

The assistant uses data made available by the system. The user does not need to know which tab contains the required report or how to set a filter.

It is important to distinguish between what is known and what needs checking. If a machine is not sending data, the answer should indicate the lack of current communication. Confirming a failure requires additional information.

This kind of conversation shortens the path from question to decision. You can check the situation of the entire fleet, then ask follow-up questions about a specific machine, refueling, or engine operating period.

The system works in the background, and you respond where needed

Multiflota is built on 30 years of our team's experience in telemetry. In our previous company, we sold 40 thousand telemetry devices. Today we develop our own hardware, sensors, and software, using experience from real implementations.

In construction machinery monitoring, we focus on information that helps manage costs and work: actual engine operating time, fuel level, refueling, suspicious losses, location, and communication status.

The user should receive a signal when their attention is needed, along with data that helps decide what to do next. Check the machine. Explain the loss. Plan refueling. Determine the cause of long idling.

Let's talk about your machines. We will match the fuel measurement, engine monitoring, and communication method to the equipment and the conditions in which it works.