Vehicle Loop Detector Single Channel And Two Channel With Direction Detection Function

JUTAI vehicle loop detectors (single & two-channel variants) are professional-grade solutions engineered with optional direction detection, tailored for traffic management, access control, and entry/exit systems. Built with industrial durability and flexible configuration, they support precise vehicle presence sensing, pulse triggering, and (for two-channel models) directional judgment—seamlessly adapting to indoor/outdoor installations and integrating with gate controllers, traffic counters, and security systems.

Our product lineup meets diverse application needs:

• Single Channel (LD100 AC / LD102 DC): Focused on reliable presence and pulse detection for basic automation (e.g., gate activation, industrial door control) without direction sensing.
• Two Channel (LD200 AC / LD202 DC): Equipped with 3 configurable direction detection modes, ideal for entry/exit management, traffic counting, and bidirectional flow monitoring.

All detectors ensure consistent identification of cars, trucks, motorcycles, forklifts, and heavy-duty vehicles, maintaining stability in harsh environmental conditions.

• Direction Sensing (Two Channel Exclusive): 3 configurable modes accurately identify vehicle travel direction (e.g., CH1→CH2 / CH2→CH1), enabling bidirectional traffic counting and entry/exit logic control.
• Adjustable Sensitivity: Single Channel (16-level tuning); Two Channel (8-level independent adjustment per channel) - minimizes false triggers and adapts to vehicles of all sizes, including trailers.
• Multi-Mode Operation: Supports presence monitoring (continuous vehicle tracking), pulse output (one-time triggers), and auto-reset (all models); Two Channel adds directional sensing for advanced traffic management.
• Industrial-Grade Reliability: Weatherproof/dustproof housing, -40°C to +70°C operating temperature range, and 95% non-condensing humidity tolerance - resistant to industrial vibration, dust, and extreme weather.
• Real-Time Status & Fault Alerts: LED indicators display power, detection status, and loop faults (short/open circuit), enabling rapid on-site troubleshooting to reduce downtime.
• Anti-Interference Design: 4-step selectable frequency (20-80 kHz for Single Channel; 20-100 kHz for Two Channel) eliminates cross-talk with adjacent loops or electronic equipment.
• Easy Integration: Manual reset button for configuration confirmation; dual relay outputs (per channel for Two Channel) connect seamlessly with standard automation and access control systems.

• Single Channel Use Cases: Industrial door activation, parking gate automation, warehouse forklift detection, security boom gate control, basic access point presence sensing.
• Two Channel Use Cases: Parking entry/exit counting systems, traffic flow direction analysis, toll booth vehicle classification, bidirectional access control, industrial entry/exit management, loading dock dual-lane monitoring.

• 15+ years of specialized experience in vehicle detection technology, with direction sensing optimized for real-world traffic scenarios.
• Comprehensive product range: from basic single-channel solutions to advanced two-channel detectors with direction detection.
• Rigorous pre-shipment testing ensures reliability in high-demand industrial, commercial, and municipal environments.
• OEM/ODM customization support + standard order flexibility, tailored to specific project requirements.
• 2-year warranty + dedicated technical support for seamless integration and long-term performance.

• Power LED (RED): Illuminates to indicate "Power ON."
• CH1 Detection LED:
  • Steady On: Indicates vehicle detection.
  • Slow Blinking: Indicates a loop short circuit or insufficient twists after the loop.
  • Fast Blinking: Indicates a loop open circuit or excessive twists after the loop.
• CH2 Detection LED:
  • Steady On: Indicates vehicle detection.
  • Slow Blinking: Indicates a loop short circuit or insufficient twists after the loop.
  • Fast Blinking: Indicates a loop open circuit or excessive twists after the loop.

Sensitivity and frequency adjustment is facilitated through a 7-way dip switch and 10-way dip switch settings. Users can choose from 8 different sensitivity settings by configuring the dip switch positions according to the provided tables.

• Dip switches 6, 7, and 8 govern CH1 sensitivity, ranging from 0.8 (least sensitive) to 0.015 (most sensitive).
• Dip switches 3, 4, and 5 control CH2 sensitivity, ranging from 0.8 (least sensitive) to 0.015 (most sensitive).

Switch 1=S1: Channel 1 Loop Function Selection (10 way dip switch)

(1) DIP 1 & DIP 2: Special Sensitivity Increase For Both Trailer (Both Channels)

(2) D3, D4, D5 and D1, D2 Setting: Special Functions (Mode1, 2, 3 Direction Detection. Mode 4, 5, 6 Normal mode, two loop detection are separated)

(3) D6 & D7 & D8 and D3 & D4 & D5 Setting: CH1 and CH2 Sensitivity Selection (Eight Levels Choices)

(4) D9 & D10 and D6, D7 Setting: Frequency (20 K to 100 KHz)

• Coil Cutting Size and Embedding Guidelines are as shown in the diagram on the right.
• It is recommended to use ferromagnetic wires for the induction coil, with a total length of up to 500 meters.
• The cutting size of the coil should be a rectangle with a length of 1.0 to 2.0 meters and a width of 0.8 to 1.2 meters, avoiding right angles at corners as much as possible.

The JUTAI LD200/202 double-channel vehicle loop detector series, equipped with direction recognition function, is ideal for numerous single-channel entry and exit scenarios. When integrated with the JUTAI One door controller (Model: AC-11), JUTAI gate barrier (Model: BR-110), and JUTAI long-range RFID reader (Model: PUHF-9), along with high-temperature resistance loop coils (Model: JTHT-11), it forms a seamless solution for single-channel entry/exit access control systems.

Entry Process:

• When a car enters the community or parking lot, the two loop coils are pressed simultaneously.
• The JUTAI Double Channel Loop Detector (LD-200/202) triggers the UHF reader located at the entrance.
• The UHF reader reads the card ID and sends it to the controller (AC-11) via Wiegand output.
• The controller verifies the ID's validity and outputs a relay signal to open the gate barrier.
• The car enters the community or parking lot, and as it passes the barrier gate, the barrier arm lowers automatically.
• The JUTAI Single Channel Loop Detector (LD-100/102) ensures safety and anti-smashing functionality during this process.

Exit Process:

• When a car exits the community or parking lot, it passes by an inside UHF reader.
• The LD-200/LD-202 triggers the UHF reader, which reads the card and sends the ID to the controller.
• The controller verifies the ID's validity and outputs a relay signal to open the gate barrier for the car to exit.
• As the car passes through the barrier gate, the barrier arm lowers automatically.
• The LD-100/102 provides safety and anti-smashing functionality during this process.

Direction Recognition:

• The Direction Recognition Function of LD-200/LD-202 ensures that the double channels loop detector does not trigger the signal again when the car passes another UHF reader, thereby recording only the 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. This configuration is suitable for standard one-in and one-out parking lots, where there is one barrier and one long-range reader at both the entrance and exit.

In this setup, one loop coil is used to trigger the reader and read the card, while the other loop coil is dedicated to the barrier's anti-smashing function. By utilizing the LD-200/202 as two independent loop detectors, there is a potential cost-saving benefit from an economic standpoint. This setup reduces some of the hardware costs associated with using separate detectors for each function.

This functionality is achieved by enabling the Independent Working Mode feature of the LD-200/202, allowing it to operate effectively in this dual capacity.