QLTC-10C


	QLTC-10C Ultra Low Power Programmable Vehicle Counter and Classificator

The programmable vehicle counter and classificator QLTC-10C uses the proven technology of detecting vehicles with inductive loops mounted into the road surface. Ultra low power operation (120 mW) enables using solar cells to power the device.

Ultra low power consumtion, integrated GSM/GPRS module and high count (99,9%) and classification accuracy (>95%) enables real traffic monitoring in all types of roads.

As the vehicle is passing over the inductive loop, the induction is changed due to the presence of the metal/steel vehicle basis. Each type of vehicle, whether it is a passenger car, lorry or truck, will cause different induction changes in the time or characteristic signal. The captured signal is evaluated in real time by advanced signal processing technics and algorithms.

Since there is a lot of similarity between the signals caused by vehicles of the same type or class, it is possible to reliably classify the type of vehicle passing the loops.

The vehicle classification is not performed on the basis of the vehicle length, but rather on the basis of the vehicle's inductive footprint.

This method is more accurate when vehicles of the same length, but different classes, have to be recognized and classified. This technology on average allows for more than 95% accuracy in vehicle class matching for vehicle speeds from 5 km/h up to 200 km/h and more.

Advanced technology with state of the art software enables devices to operate robustly and practically error-free over the entire speed range and in all environmental conditions, thus providing the user with maximum reliability, safety and accurate traffic data at minimum maintenance costs.

The built in operating algorithm will enable the device to work robustly. It will cover all traffic conditions such as stop & go traffic, standing or very slow queues, traffic with very extensive speed variations etc. with no need for fine tuning the device. It's all done automatically, simple as plug & play!

The sophisticated auto diagnostic system with intelligent autorecovering functions will provide the necessary steps and information (such as date and time) if malfunctions occur. The system will recover automatically if the cause of the malfunction disappears.

Device can be equipped with the GSM/GPRS module for remote data transfer operation and remote device configuration. Also there is possibility to post the SMS message with error description to the service personnel.

Device has integrated solar cell charger - plug & play function for solar cell power supply option

	Main Features
	Maintenance
	Technical Data

Operating modes
QLTC-10C has four independent measuring channels. Normally, two channels or loops are used per single lane for vehicle classification. It is still possible to use all four channels or loops for detecting and counting the vehicles with classifying them into 5 classes. The device uses 1GB SD card for data storage. The capacity of the memory allows the device to capture traffic data for 1 year. After that data are automatically re-written.

Captured data can be stored at the intervals selected by the user, or/and separately for each passing vehicle (per vehicle recorded).

If data is collected in intervals, the following data is stored for both lanes independently:

	Date and time of interval
	Number of vehicles per class (10+1 class),
	Average speed per class A1,
	Number of vehicles per speed range,
	Maximum, minimum and average travelling speed per lane,
	Loop occupany measured in promils,
	Average gap time between vehicles,
	Temperature inside cabinet

If data is collected separately for each passing vehicle (per vehicle recorded), the following information will be stored:

	Date and time,
	Lane (heading),
	Daily vehicle index on lane,
	Vehicle class,
	Vehicle speed.

Vehicle classes
The following vehicle classes are recognized by the QLTC-8C/10C devices. Classification scheme is compliant with the EEC 1108/70 EU directive.


Class	Subclass	Description

A		Personal Cars
	A0	Motor bikes
	A1	Passenger cars, Passenger cars with a trailer
	A2	Vans with or without a trailer
B		Cargo vehicles
	B1	Lorries, lorries with trailers
	B2	Mid-sized trucks
	B3	Trucks
	B4	Trucks with trailers
	B5	Tows
C	C1	Buses
	C2	City buses

D	XX	Unrecognized vehicles

Vehicle classes can be modified according to the specific customer needs.

Data handling
Collected data is transferred from the device to a portable PC computer over a standard USB port using the WinQLTC software. The same software is also used for data handling, processing, reporting, graphing, table generation and other customer specific options.

Communication
When multiple devices are needed at a location, for example at a toll station, up to 16 QLTC-10 devices can be connected to a serial bus and to a desktop PC, thereby allowing the user to monitor the traffic on-line from a single point.

Additionally, a GSM/GPRS module can be integrated into device to connect one or more devices over a public GSM900/1800 network, thereby allowing the user to monitor and collect the traffic data remotely. Traffic data and system information can be retrieved remotely, manual using a PC computer and a GSM modem or automatically with a QLTCnet Server software.

When a device is equiped by GSM/GPRS module, all malfunctions such as power fail, loop errors, etc. are automatically reported on-line to the service personnel by using the SMS services.

Controlling
The QLTC-10C offers outputs, with signals for direct control of ramps and/or other traffic controlling and/or signalling devices. Several signals i.e. loop status, speed limit violation, low speed or queue detection, are available via an interface and can be used for controlling the automated traffic signs.

Construction
The QLTC-10C device is designed as a small and compact device in the rigid housing. The device is electronically protected against against voltage surges and lightning strikes, thus protecting the hardware from the electrical shocks. Since all the components are built into the single housing, the corrosion effects on the connectors are ruled out. The loops are connected to the device via a spring-like push lock connector.

Additionally, the device can be equipped only by 16-20W solar cell and 12Ah battery unit that is enough of autonomous operation. Due to ultra low power design, the power consumption is less than 120mW with integrated GSM/GPRS module.

The device is normally mounted in a plastic roadside cabinet that protects the hardware from mechanical and atmospheric influences.



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