LNV-II
LNV-II
Loop VDSThe loop VDS works using induction magnetic field to detect vehicle. Using this magnetic field effect, traffic volume, occupancy and speed are calculated. These collected traffic informations are up-loaded to traffic control center.
Configurations of LNV-II
System specification of LNV-II
Traffic information collection and up-load
VDS protocol, Various sensor layout
Wrong way drive vehicle identification
When the speed of vehicle shows negative value, it defined as wrong way driven traffic.
The situation will be report traffic center immediately
Data management function
The traffic parameters can be analysed and saved as operators time schedule. (10 sec, 20 sec, 30 sec, and 60 sec time interval)
Self diagnostic features
When an initial start-up or power recovery, self diagnostic function initiates the check of RAM, ROM and watch dog.
Power reset function
After short power failure( below 2 sec) or long power failure, all of setup parameters are remained.
Configurations of LNV-II
| # | Section | Detail items |
|---|---|---|
 |
Functions | Signals from loops are converted to traffic information and it will be save in memory The files are transmitted to traffic center at the ceratin time using ethernet |
| CPU (Clock) | S3C6410 32Bit Processor (ARM11 Core 667MHz) | |
| MDDR SDRAM | 256 MB | |
| SD Memory | More than 4GB | |
| Real Time Clock | 1/100 msec, sec, minute, hour, day and month | |
| Nand Flash | 128 MB | |
| Operating system | Windows CE 6.0 | |
| Communication | Ethernet 10/100M 2Port(Traffic center communication and maintenance) Serial Port : 3 Ports , Serial connection : RS 232C((Speed : 300bps ~ 128kbps) |
|
| User interface | Display : 480x272(RGB) Graphic LCD(With Touch) | |
| Main functions | Real time data collection and communications, remote sensing & administration, USB client, USB host | |
| Operational temperature | -30℃ ~ 70℃ | |
| Power | AC 220V / DC 12V | |
| etc. | Maximum 10 lanes capability (Lane, traffic volume, speed and occupancy detection), Precision up to 95% | |
 |
Functions | The loop sensors from each lanes are picked up signals and proceeded via CPU module Sensibility and bandwidth of each sensors can be set up. The front panel LED can be displayed |
| CPU (Clock) | 32bit Micro processor (128MHz) X 2 | |
| Number of input chanel | 4 chanel for each sensor module | |
| Safety device | Lighting protection device is connected with loop sensor as parallel | |
| Sensitivity adjustment | Automatic sensitivity adjustment / Remote sensitivity adjustment | |
| Frequency adjustment | Dip and jumper switch for oscillation frequency adjustment | |
| Surveillance function | Watch Dog Timer, Sensor abnormal signal | |
| Operational temperature | -30℃ ~ 70℃ | |
| Power | DC 5V / DC 12V | |
 |
Functions | Loop B/D transfer signal to CPU B/D. Each chanel ́s conditions are displayed at front panel LED |
| CPU (Clock) | 32bit Micro processor(50MHz) | |
| Number of input chanel | 16 chanel for each sensor module | |
| etc | Lighting protection, LED status information display | |
| Surveillance function | Watch Dog Timer, Sensor abnormal signal | |
| Operational temperature | -30℃ ~ 70℃ | |
| Power | DC 5V / DC 12V | |
 |
Functions | Duplex DC power |
| I/O | Input Power AC 100 ~ 264V Input frequency 47 ~ 440Hz max |
|
| etc | 2 x Parallel Power supply slot (Solution for power B/D trouble) 72 hours can be supported by battery (12V) |
|
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Functions | Realtime vehicle information, Display for system status and sensor condition information Maintenance & administration using touch screen |
| VDS Maintenance S/W |
Functions | Set up information up date using remote connection, Statistic information data file download |
| Operating system | More than Windows XP |