Centralizer traffic controller
RSC centralizable traffic controller is a modular system developed by La Semaforica for meeting any requirement of traffic management, of any nature and complexity.
It has been developed and built in compliance to standards of UNI EN 12675 and it is supplied with CE Certification.
It is based on a multiprocessor structure, and it is made up by a central control unit that can be extended to an industrial PC 32 bit and by a series of remote microprocessors for the management of inputs and outputs.
It is formed by modular Eurocard boards (100 mm x 160 mm) lodged in a rack 19” 3/6U with polarized connectors according to DIN 41612, and provided with a front panel with a wide LCD display 80 characters, in order to make the interface with end users easy and intuitive.
Functions carried out
- All red
- Manual with remote control
- Automatic with fixed times
- Actuated by the traffic flow with extension and/or cancellation of traffic phases
- Light off features
- Dynamic generation of traffic plan, according to traffic data collected
- Priority system for public or emergency vehicles
- Automatic change between summer time/daylight time
- Monitoring of all connected lamps
- Collection and storage of traffic data with volumetric and classification standards, collected through inductive loops and/or microwave technology
- Centralization with plan insertion or phase progress
- Telecontrol with automatic sending of SMS or faxes, as soon as breakdowns on traffic controller arise
- Insertion of plan through internal weekly chart
- Insertion of plan on special dates with yearly calendar
- Automatic storage of damages, state exchange
- Degenerated functioning with management algoriths, alarm event
- Algorithms for management priority tramways
- 80 characters display with vision of internal temperatures of cupboard, instantaneous power and power supply
- Equipped for 32 signal groups (extendible to 42)
- Max load for each lamp output 800 W
- 32 digital inputs (extendible to 80)
- 32 digital outputs (optional)
- 16 independent programs selectable by LCD panel, remote control or with internal weekly charts
- 2 serial ports RS 232 (extendable to 4 RS 232, 1 Ethernet port, 2 SB and 1 RS 485)
- Detection and classification of traffic data (32 inputs on 8 length classes and 8 speed classes)
- Centralization with PASPA System
- Centralization with SIGMA System (Elsog)
- Centralization with SPOT/UTOPIA System (Mizar)
- Centralization with TMacs System
- Connections via GPRS, leased lined
- Dinamic traffic plan generation following HCM Algorithms
- Power 230 Vac (available 42 Vac)
- Software multilanguages
Control and safety
With reference to standards of EN 12675, the traffic controller foresees a series of redundant control circuits on different hardware so as to give a complete security on all outputs.
In particular, the traffic controller is provided with the following controls:
- “CONFLICT GREENS”: checking of incopatibility of two green lights simultaneously switched-on.
- “INTERGREEN MATRIX”: control of inter-time a mong green lights as function of minimum times of ignition, and a progammable compatibility matrix.
- “PROGRAM ERROR”: check of installation running program and that times programmed are correct.
- “CURRENT CHECK”: control of a single lamp connected in parallel with other lamps.
- “Check of wrongly -off lights”: control of electrocuted loads.
- “Check of wrongly -on lights”: control of short-circuit cables.
Setting of traffic plans
Traffic controller programming is made through a special software developed by La Semaforica for PC or Mac in Windows® or Linux Operative System, which has an intuitive design to facilitate the adjustment of any installation or semaphored junction.
Programming from LCD panel allows to modify important parameters like times length and time bands, the number of program and clock information, items for semaphore plan, detector configuration.
The modular structure allows the configuration of this regulator, for any kind of intersection, and it is composed by the following components:
- Power Supply board: It provides power supply to the electronic circuitry of all boards, and has an emergency flashing device that put the installation on flashing mode, even if CPU board is not working.
- CPU Board: It manages the traffic controller, the firmware is located here and it stores all configurations and set traffic plans.
All data are recorded in an EEPROM support. The board can be extended with industrial PC platform with standard PC104: this integration allows the communications between traffic controller and any other system present.
- Detection board: it interfaces with vehicular detectors in order to collect and store traffic data. Data are available for a statistics use or directly for the dynamic control of phases.
- OUT board: it is the interface between CPU and traffic lights. Each one has 6 lamp outputs and can control 2 signal groups.
- TA board: it runs as a support for OUT board, checking the power absorption of each output, detecting the burning out of each single lamp.
Rilief of traffic data
RSC system gives the possibility to RSC to become a Station for data collection and process.
In particular, besides normal functioning as traffic controller, the system is able to manage up to 32 inputs for vehicular detections.
The data classification is based on length and speed parameters, and all incoming data are stored following eight classes of length and eight classes of speed.
Through the specific software, it is possible to configure, manage and download the archives.
All traffic data are stored at regular intervals of time, which can be set from a minimum of 5 minutes until an hour.
The operation software allows to export the whole archive in a chart form, compatible with MS Excel.
RSC can be used in different Centralization Systems with the following functioning mode: choosing a traffic plan with phase progress, or in synchronized systems.
The Central System developed by La Semaforica allows to choose among different operative modes. Traffic junctions are linked to one or more geographic areas, and they can be selected through a showed menu; different arms of the menu can represent either a single junction or a junctions network, containing all single junctions that can be selected independently.
The architecture of a typical Centralization System is shown in the following scheme.
Telecontrol and telealarm through GSM Modem
The software module GSM, included in the RSC -S- version can interface RSC traffic controller with a GSM modem for transmission of data and messages, either with telecontrol and telealarm functions.
With telealarm function, in case an event linked to an anomaly occurs, the controller sends the relative message to a list of numbers (up to 8) including the identification of the installation.
With telecontrol it is possible to send orders to the controller through a mobile phone to try and restore the functioning with a reset, independently of the 3 re-start attempts made by CPU board. It is also possible to change from a program to another pre-arranged in the memory of the controller and also, in particular situations, to put the installation flashing.
The system can be identified with the blocks indicated.
Telecontrol and remote manage trhough GPRS modem.
Telecontrol and telealarm through GPRS Modem and Tmacs software
Dynamic generation of traffic plan and dynamic control of traffic phases (CDF)
Purposes of the CDF control:
Calculation of best times of green on any traffic lane according to measured flow and fluency noticed.
It can certainly be integrated with the normal actuated functioning. Using both of these adjustments together bring to a perfect management of the intersection.
RSC traffic controller is able to determine and adjust in realtime the cycle times to real requirements of traffic.
The dynamic generation of plan, with reference to time change of program, allows to modify the program referring to a real request from traffic and not to a statistic theoretical calculation.
It is possible to realize a network of traffic controllers all operating in dynamic generation of plan just linking them together in a network for transferring data through a RS485 serial port or GSM modem (if the distance is more than 1000 mt).