TURKEY · CHILLED DAIRY DISTRIBUTION

Dairy Temperature Alerts in Istanbul

Complex Events calculated the average cargo temperature onboard eight trucks and sent an SMS above 5°C, while an in-cab buzzer warned drivers when the cargo door stayed open for more than five minutes.

Istanbul, Turkey · Eight refrigerated trucks

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Illustrative refrigerated dairy delivery truck at a distribution warehouse in Istanbul, Turkey

Solution device

SMART S-2433

Four 1-Wire sensorsLocal averagingSMS alerts

Market: TurkeyIstanbul
Vehicles: Eight refrigerated trucksFour 1-Wire temperature sensors per truck
Application: Chilled dairy distribution

THE CHALLENGE

Detect rising temperature during delivery

A dairy distributor operated eight refrigerated trucks with ageing refrigeration units. Equipment failures had occurred, creating a risk of temperature deviations during deliveries.

The company needed timely notification of rising temperatures so staff could contact the driver and arrange a check while the shipment was still in transit. They also needed to know where the truck was and whether the cargo door had been opened.

Built with Complex Events

THE SOLUTION

Alert staff to temperature rises and drivers to open doors

SMART S-2433 trackers were installed in the trucks. Each refrigerated compartment had four temperature sensors, one in each corner, connected to the tracker through 1-Wire. A door sensor recorded opening and closing events. Temperature readings, door status and vehicle location were available in the monitoring system.

Automatically report rising temperature

An algorithm configured through Complex Events calculated the average of the four temperature readings directly inside the tracker. When the average exceeded 5°C, the device sent an SMS to the responsible employee. Staff could then contact the driver and request a check of the refrigeration equipment and cargo-compartment conditions. The 5°C threshold was the project’s configured alert setting. An average below that threshold did not establish that every individual sensor location was below 5°C.

Warn the driver when the door stays open

If the cargo door remained open for more than five minutes, an in-cab buzzer sounded. This prompted the driver to check the door and close it once access was no longer needed, helping avoid unnecessarily prolonged openings. The buzzer was a door-open warning. It did not stop the engine or control the refrigeration unit.

Review door activity before the next check

Staff could examine the truck’s location and door events when investigating a temperature rise. This helped establish whether unloading was taking place or whether temperature was increasing with the compartment closed, requiring further investigation of the refrigeration equipment. A door opening provided context rather than automatically proving the cause.

THE RESULT

Temperature alerts for staff and door warnings for drivers

The distributor received automatic SMS notifications when the average temperature exceeded the configured limit. Staff no longer needed to continuously watch the monitoring screen to detect that condition.

Drivers also received an audible reminder when the cargo door stayed open for more than five minutes, without waiting for a dispatcher to call. Staff could use temperature, door and location history when following up on a delivery.

WHY SMART S-2433

Intervene while products are still in transit

S-2433 gave the supplier an opportunity to intervene while the dairy products were still in transit. Staff could identify the truck needing attention and ask the driver to check the refrigeration equipment before the delivery continued unnoticed under unsuitable conditions.

The door warning brought a separate issue directly to the driver’s attention: access to the cargo compartment remaining open for too long. It gave the person at the vehicle an opportunity to respond without waiting for office intervention.

This was particularly useful with ageing refrigeration units: the supplier could prioritise a vehicle showing a problem without assigning someone to watch every truck throughout the day. Earlier intervention could help limit product spoilage, rejected deliveries and replacement costs, while the journey records supported investigation of recurring refrigeration problems.

SMART S-2433

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