Traffic Signal Controller
Maintel Biz Ventures collaborates with CDAC (Government of India) as a TOT Partner to produce Adaptive Traffic Signal Controllers. This innovative vehicle-actuated traffic control system is engineered to tackle diverse traffic conditions by continuously evaluating real-time traffic demands from vehicle detectors placed at key locations. Based on this evaluation, the system produces optimal signal timings for coordinating signals in vehicle-actuated traffic signal operations, thus reducing stops and delays at intersections and shortening overall travel time.
Salient Features
- 32 bit Microcontroller based.
- 32 independent lamp outputs, which can be expanded to a total of 64 outputs in increments of sixteen.
- 16 independent vehicle detection inputs expandable up to 20 inputs.
- Inductive loop and camera-based vehicle detection compatible.
- Integrated custom LC Display.
- Time synchronization by GPS or ATCS server.
- Lamp monitoring.
- Centralized Remote Administration and Monitoring from a single computer.
- Area Traffic Control System (ATCS) compatible.
- 12/24VDC/230VAC Operation.
Cute is a vehicle-activated traffic signal controller designed to manage signal lamps through a wired medium. It is compatible with the Area Traffic Control System (ATCS) and can operate at isolated intersections or as part of a synchronized network of controllers. The controller enables remote monitoring and management of signal plans across various communication networks. Additional features include optimized solar power operation, PWM-based intensity control for signal lamps, GPS/server-based distributed time synchronization, and a compact architecture suitable for pole or plinth mounting. Cute has been developed by CDAC(T) as part of the 'Intelligent Transportation System Endeavour (InTranSe) for Indian Cities,' a national collaborative research and development initiative funded by the Department of Electronics and Information Technology (DeitY), Ministry of Communications and Information Technology, Government of India.
Modes of Operation
- Pre-timed
- Vehicle Actuated
- Split Optimized
- Cycle Optimized
- Semi Actuated
- ATCS
- Manual Control
- Hurry Call
- Cable less Linking
- Pre-timed
- Vehicle Actuated
- Night Flash
- Forced Flash
- Error detection Flash
Signal Plans
- 32 Phases
- 32 stages
- 24 Cycle Plans
- 20 Day Plans
- 4 Week Plans
- 20 Holiday Plans
- 4 Season Plans
- 4 Hurry calls
- 12/24 VDC operation at 6 watts
Interfaces
- RS232- to get the debug information about the controller status
- Ethernet- communication to the ATCS server
- USB- Firmware upgrade
Firmware Features
- Plan entering and retrieval using user interface (LCD and keypad) and Laptop.
- Plan execution as per Fixed, Vehicle Actuated and ATCS modes.
- Switching of lamps as per the Signal plan
- Time synchronization at predefined intervals by GPS.
- ATCS communication
- Police panel interface
- Plan downloading and uploading facility
Hardware Specifications
- AT91SAM7X512 processor with 512 K flash and 128 K RAM
- Drives 32 lamps per controller and delivers current of 2A max per channel
- GPS based Real Time Clock (RTC) with battery backup
- PORTS: RJ45, USB, USB device port (USB)
- User interface: (5X4) keypad, (20X4) characters LCD, Pluggable to Laptop/PDA
- Vehicle Sensor Modules Interface
- Police panel interface for immediate key access/wireless remote access(optional)
Mechanical
- Plinth /Pole mountable, Weather proof cabinet
Wireless Police Panel (Optional)
- Must be operation in free wireless band (433 Mhz or less for better performance)
- Must have the functionality like Forced Flash, Hurry Call (4 numbers), Lamp OFF
- Must have option to switch between both wireless and wired police panel
- The feedback of the current operation should be in the wireless
Scalability of Vehicle Actuation Controller to ATCS in Future
This approach detects traffic using non-intrusive loops strategically placed at key locations within the intersection. These sensors relay real-time traffic data to the controller via detectors integrated into the controller.
At the same time, the data is transmitted to the central control room server, where the ATCS software receives and processes the information to issue appropriate commands to the intersection controllers, allowing them to adjust the timing of the green signal. The controller effectively extends the green light duration based on the commands received from the control room, while adhering to the programmed maximum and minimum green time limits. Consequently, the system ensures efficient management of traffic flow in the areas where it is deployed.
