Offering "Comfort for the passenger" is a clear instruction that is always in the mind of TRANSPAIS, which is why, given the extreme weather conditions that exist in the geographical region where the service is offered, the importance of being able to monitor the ambient temperature during the trip and thus determine if the comfort conditions were optimal for the passengers.
Given a long working relationship and technological developments with didcom, we are asked to evaluate the implementation and implementation of said project, which would be implemented in all units that offer the federal transportation service.
How to know if the temperature inside our buses is pleasant for passengers, regardless of the area in which their seat is during the trip?
This innovative challenge arose from a common problem: how to know if there was a pleasant ambient temperature for passengers regardless of the assigned seat during each trip.
It was important to identify this variable to determine the solution to be implemented and correct the problem of origin, since it could be due to the configuration of the air conditioning system, or to a failure in some mechanical component such as the compressor or thermostat.
For TRANSPAIS, this issue led them to discover an opportunity to improve the experience of their passengers, and that at the same time could help them identify problems in the operation and functionality of the air conditioning system.
Questions such as:
Why do we have customer complaints about the temperature condition during the trip?
Will the compressor be running?
Will there be ignorance of the driver in the operation of the AC?
Could the temperature and also the functionality of the compressor be monitored?
Given this scenario, didcom was asked for a technological development proposal to meet this requirement, which had to be adapted to be implemented in the different types of buses that are within the fleet, and which would be integrated into the online telemetry platform.
A unique, easily adaptable product was developed, which consists of monitoring a network of temperature sensors distributed evenly throughout the bus, also adding a digital sensor to that network to determine the operating status of the compressor.
For this, 2 versions (Kits) were determined, which are identified as Temp 3 (3 Sensors) and Temp 5 (5 Sensors), which are depending on the type of bus, 1 and 2 floors respectively.
All the information is concentrated in an electronic interface installed in the bus called Master, which is integrated into the telemetry device for the transfer of information in real time, so that each data recorded is related to the geographical position, which allows us to understand the temperature variation behavior depending on the GPS location of the bus.
For the complete development of the solution, the project was divided into 3 areas: Hardware, Firmware and Software, which were essential to deliver the expected result.
The main activities of technological development are shown below in general:
- Master Interface
- Interface Sensors
- Physical connection between interfaces
- Type of Sensors
- Sensor Network
- Communication topology
- Communication between sensors and Master
- Communication between Master and telemetry device
- Variation and frequency of records
- Information transfer in real time
- Interpretation of information
- Database Structure
- User interface for viewing information at the logbook, reports and graphs level
- Creation of operating rules and comfort ranges
- Notifications and Alerts