SPIDER™
The RTMS® SPIDER™ (Simple Presence In-Lane Detection Event Reporting) system detects, collects and transmits traffic data using wireless communications and delivers detection through contact pairs to a legacy controller.
SPIDER builds upon the advantages of the RTMS radar sensor and radio frequency modems, integrating them into a seamless solution. A single remote SPIDER Hub (typically located in the controller cabinet) concentrates data from several remote RTMS radar sensors using point-to-multipoint digital spread spectrum wireless technology, which eliminates the need for fixed communication lines, trenching and digging.
Applications
- Mid-block detection
- System detectors
- Loop-detector replacement in legacy systems
- Corridor/arterial coordination
- Adaptive urban traffic control
Features
- Provides wireless presence indication (or traffic measurement parameters) directly into the controller cabinet
- Up to 8 Side-fired RTMS sensors per SPIDER Hub
- Up to 8 lanes per RTMS radar sensor
- Up to 32 contact pairs per SPIDER Hub
- Dual-loop speed-trap emulation
- Real-time secure wireless communication
- Reliable all-weather performance
Benefits
- Low-cost, completely wireless solution that replaces advance loop detectors and lead-in wires
- Uses existing poles as detection station
- No road works, lane closures, digging or trenching
- Flexible installation (number of lanes and location)
- No scheduled maintenance required
- Compatible with NEMA TS-1, TS-2, 170 and 2070 Controllers
- Zero Setback requirement allows installation on curbside pole
Specifications
- System
- Point-to-multipoint frequency hopping spread spectrum radio modems
- 902-928 or 2400-2483 MHz ISM band
- Highest interference immunity by 64 pseudo-random hopping patterns
- Up to 30 km range - depending on power, line-of-sight and antenna type
- CRC-16 error protection
- Multiple SPIDER™ networks can operate in overlapping areas with no interference
- Secure communication by network addressing and encryption
- FCC rules Part 15 approval and CE approval for license-free operation
- RTMS
- Model K4 or X3 with integral DSS RF modem and whip antenna
- All-weather accurate measurement of presence, volume, occupancy and average speed in up to 8 lanes
- SPIDER Hub
- Includes integral DSS RF modem
- Shelf mounted in controller cabinet
- SPIDER-RM, plugs in directly into controller
- Output: up to 32 contact closures or data concentrated from up to 8 RTMS sensors
- Remote programming, monitoring and data by serial port
- Power Requirements
- 9-30 VDC/AC at 1.5 Watt - SPIDER
- 12-24 VDC at 1.5 Watt - SPIDER RM
- Environmental Conditions
- Temperature range -37°C to +74°C
- Humidity to 95%
- Lightning and surge protected
- Mechanical
- Rack Mount
- Length x Width x Height - 165 mm x 60 mm x 115 mm (6.5 in x 2.4 in x 4.5 in)
- Weight - 220g (0.5 lb)
- Shelf Mount
- Length x Height x Width - 127 mm x 51 mm x 127 mm (5 in x 2 in x 5 in)
- Weight - 450 g (1 lb)