Dual Channel Inductive Vehicle Detector for Parking Entrance Exit Barrier Gate

This inductive vehicle detector is designed for controlled vehicle entrances and exits where two road loops manage the movement of cars, vans, trucks, and other vehicles. The unit monitors CH1 and CH2 in one dual-channel platform, converting loop activity into relay signals for connected barrier gates or access controllers.

In parking entrances, the first loop detects approaching vehicles while the second confirms passage. In exit lanes, the same concept supports exit direction logic. When loops are installed in sequence, the detector determines vehicle travel direction from CH1 to CH2 or CH2 to CH1.

With relay-based outputs, the detector integrates with compatible barrier controllers, parking control panels, and vehicle-access systems that accept dry-contact or relay-triggered inputs. The connected controller determines specific actions such as open, hold, count, or confirm passage.

The detector offers six selectable modes via DIP-switch configuration:

• Direction-related pulse output
• Direction-related presence output
• Separate CH1 and CH2 presence operation
• Pulse output when vehicle enters a loop
• Pulse output after vehicle leaves a loop

This flexibility allows system integrators to use a single detector across various lane designs, from simple presence zones to direction-sensitive applications.

Each loop channel features eight sensitivity choices (0.015% to 0.8%) and four frequency selections across approximately 20-100kHz. These adjustments enable installers to optimize system performance for specific loop layouts and reduce interference from adjacent loops.

• Two inductive loop channels in one detector
• Direction recognition from loop sequence
• Presence and pulse output options
• Independent channel operation capability
• Eight sensitivity settings for CH1 and CH2
• Four frequency selections
• Automatic reset and permanent presence modes
• Trailer sensitivity enhancement
• LED-assisted fault diagnosis

• Parking entrance control
• Parking exit control
• Residential gate lanes
• Commercial vehicle access
• Industrial site entrances
• Two-loop traffic direction logic

Proper loop installation is essential for reliable inductive detection. The manual provides loop-turn recommendations based on loop perimeter and specifies vertical orientation for detector plug and socket installation.

• Power LED (RED): Illuminates to indicate "Power ON"
• CH1 Detection LED:
  • Steady On: Vehicle detection
  • Slow Blinking: Loop short circuit or insufficient twists
  • Fast Blinking: Loop open circuit or excessive twists
• CH2 Detection LED:
  • Steady On: Vehicle detection
  • Slow Blinking: Loop short circuit or insufficient twists
  • Fast Blinking: Loop open circuit or excessive twists

Sensitivity and frequency adjustment is facilitated through 7-way and 10-way dip switch settings:

• 8 different sensitivity settings available via dip switch configuration
• Dip switches 6, 7, and 8 govern CH1 sensitivity (0.8 to 0.015)
• Dip switches 3, 4, and 5 control CH2 sensitivity (0.8 to 0.015)

Switch 1 (S1) - Channel 1 Loop Function Selection:

• DIP 1 & DIP 2: Special Sensitivity Increase For Both Trailer (Both Channels)
• D3, D4, D5 and Switch 2 D1, D2: Special Functions (Mode1, 2, 3 Direction Detection. Mode 4, 5, 6 Normal mode)
• D6 & D7 & D8 and Switch 2 D3 & D4 & D5: CH1 and CH2 Sensitivity Selection (Eight Levels)
• D9 & D10 and Switch2 D6, D7: Frequency Selection (20 K to 100 KHz)

• Coil cutting size should be rectangle: length 1.0 to 2.0 meters, width 0.8 to 1.2 meters
• Avoid right angles at corners as much as possible
• Use ferromagnetic wires for induction coil, total length up to 500 meters
• Keep product plug and socket in vertical direction during installation

The JUTAI LD200/202 double-channel vehicle loop detector series, equipped with direction recognition function, is ideal for single-channel entry and exit scenarios when integrated with:

• JUTAI One door controller (Model: AC-11)
• JUTAI gate barrier (Model: BR-110)
• JUTAI long-range RFID reader (Model: PUHF-9)
• High-temperature resistance loop coils (Model: JTHT-11)

The Direction Recognition Function ensures the double channels loop detector does not trigger the signal again when the car passes another UHF reader, recording only entry or exit records in the system.

The JUTAI LD-200/202 Double Channel Loop Detector can also function as two independent single-channel loop detectors, suitable for standard one-in and one-out parking lots. This configuration provides cost-saving benefits by reducing hardware costs associated with using separate detectors for each function.