Ensures well-proven and reliable counting with high accuracy
IRMA 3D makes use of an reliable detection method: Rapid pulses of laser light are sent out using the invisible IR range. These are reflected by objects and detected by the sensor. The distance to the object is then calculated by measuring the time between transmission and reception of the light pulse. In this way, the system generates a 3D-image or profile of the door space. This technique enables the devices to detect each person even in tightly packed crowds. This allows IRMA 3D to reliably distinguish people from other objects and will even allow the determination of body height. The raw data accuracy is guaranteed to be at least 96% regardless of any environmental conditions. The accuracy of IRMA 3D allows for the measurement of transit service performance; reconciliation between revenues from fares and the number of passengers, passenger kilometres and standard route analysis.
Due to its innovative product design and the completely closed housing the sensor is installed flush with the application surface and the IRMA 3D sensor blends perfectly well into the elegant interior of modern vehicles.
IRMA 3D employs a data bus which gives a modular and flexible system design with only a small number of components.
- IR laser sensors using the time-of-flight (TOF) technology
- Recognition of the direction of movement (boarding and alighting passengers)
- Detection of body heights for high count accuracy
- Distinction between people and objects
- Support of standard systems interfaces (IBIS, RS232, RS485, J1708) for connection to existing telematics systems (on-board computer, ticket printer)
- Easy unobtrusive installation within the vehicle without adjustments
- Closed surface, face plate available in various colours and materials
- Connection of up to 8 sensors to one analyzer (for a maximum of 4 wide doors)
- Passenger counting where extreme accuracy is crucial (average counting accuracy of 98 %)
- Distribution of revenues
- Revenue control
- Line service profitability
- Monitoring of transit service performance
Counting sensors are mounted above the door space – either behind the cladding or below it using appropriate brackets. A CAN data bus is used to connect the sensors to the analyzer. A cable box is mounted at each door for quick installation of the data cable. The analyzer is connected to a voltage supply and it also holds door status information – counting is active only while doors are open. The system interface (IBIS, RS485, J1708) is used to transmit counting data to the vehicle’s on-board computer. Each analyzer supports the connection of a maximum of 8 sensors – thus allowing each analyzer to cover 4 wide vehicle doors.