Adjustable Loop Detector for Parking Boom Barrier with Relay Output to Detect Trucks

Brand:​​ JUTAI (Shenzhen Jutai Comm Co., Ltd.)

​Model:​​ LD-100 (AC 100-240V) / LD-102 (DC 12-24V)

​Alternative Names:​​ Loop Detector, Loop Sensor, Vehicle Loop Sensor, Parking Entry Sensor

Product Overview

This single channel loop detector is engineered to identify vehicles by sensing changes in the electromagnetic field created by a properly installed inductive loop placed in or under the ground surface. It serves as a reliable component in automated systems that require accurate vehicle detection such as parking entrance and exit barriers, industrial overhead doors, and access control points.

The unit is capable of identifying the presence of various vehicle types including trucks, motorcycles, and forklifts. It offers both momentary and continuous output options through its relay contacts, allowing it to be used for a variety of control functions such as opening a gate, activating a light, or counting vehicles.

Main Features

• Designed to work with inductive vehicle loops installed at parking lots, loading docks, and industrial entrances

• Provides reliable detection for a broad range of vehicle types such as passenger cars, commercial trucks, two-wheel motorcycles, and industrial forklifts

• Equipped with two separate relay outputs which can be used to indicate either presence or a momentary trigger event

• Adjustable sensitivity control allows installers to match detector performance to the loop size, wire turns, and installation environment

• Multiple configuration options available through easy-to-use DIP switch settings

• Visual status indication helps with installation and troubleshooting

• Supports both AC and DC power versions depending on model selection

• Designed for stable operation in both indoor and outdoor environments when installed in appropriate enclosures

Common Use Cases

• Automated parking barrier gate systems that require vehicle presence before opening or closing

• Industrial facility doors and roller shutters where forklifts and other machinery must be detected

• Toll stations and entry checkpoints where vehicles need to be identified before proceeding

• Access control systems that restrict or allow entry based on vehicle detection

• Traffic management and vehicle counting applications

• Time-based entry systems and parking management solutions

• Warehouse loading bays and vehicle-operated equipment zones

Supported Vehicle Types

The loop detector is effective for detecting various forms of metal-bodied vehicles, including but not limited to:

• Standard passenger vehicles

• Commercial trucks and delivery vans

• Motorcycles and scooters

• Industrial forklifts and small machinery

• Other vehicles with sufficient metallic mass to alter the loop field

Proper installation of the inductive loop is essential to ensure consistent and accurate detection results.

Detection Methods

This device supports two primary methods of vehicle detection:

• ​Presence Detection Mode:​​ Keeps the output relay active so long as a vehicle remains over the loop. Useful for holding open a gate or indicating a space is occupied.

• ​Pulse Detection Mode:​​ Produces a short output signal when a vehicle is first detected. Commonly used to initiate an action such as opening a barrier or recording an entry.

Detection Settings

• ​Sensitivity Level:​​ Can be adjusted to ensure proper operation with different loop configurations. More sensitive settings are suitable for smaller or fewer wire turns. Less sensitive settings work better with larger loops or high-traffic areas.

• ​Relay Activation Time:​​ Output duration can be set to match the needs of the controlled device, such as how long a gate should remain open.

• ​Mode Selection:​​ Choose between different operating behaviors including auto-reset, manual hold, test mode, and frequency options to reduce interference.

• ​Frequency Range:​​ Adjustable to help prevent cross-talk when multiple detectors are installed within close proximity

Any adjustments made to the DIP switch settings require a reset of the device to take effect.

Loop Installation Details

The detector relies on one or more inductive loops that are installed in the ground. These loops are typically made from stranded copper wire installed in a loop shape and then sealed into the pavement using a durable material such as epoxy or asphalt.

General guidance for loop turns based on loop size:

• Loops around 3 to 4 meters in perimeter: 6 wire turns

• Loops around 4 to 6 meters: 5 turns

• Loops around 6 to 10 meters: 4 turns

• Loops around 10 to 20 meters: 3 turns

• Loops over 20 meters: 2 turns

For best results, loops should be installed at least 2 meters apart from one another if multiple units are used in the same area. Longer cable runs between the loop and the detector should use shielded cable to preserve signal integrity.

Power Supply Options

• ​LD-100 Model:​​ Designed for 100-240V AC power input

• ​LD-102 Model:​​ Designed for 12-24V DC power input

Select the version that matches your existing power source to ensure correct operation and easier installation.

Why It’s a Reliable Choice

• Trusted by installers for use in real-world parking and access applications

• Flexible enough to handle different vehicle types and loop setups

• Easy to configure and adjust without complicated programming

• Designed for long-term reliability in both indoor and outdoor environments

• Compatible with a wide range of gate controllers, access systems, and automation devices

Product parameters:

 
 
Switch 2 (Dipswitch Settings)
 
 
1.DIP 1 & DIP 2 Setting Special Functions

 
2.DIP 3 & DIP 4 Setting Relay B Output

 
3. DIP 5 Setting Automatic Reset

 
4. DIP 6 & DIP 7 & DIP 8 Setting Relay A Delay

 
5. DIP 9 & DIP 10 Setting Frequency (40 K to 100 KHz). Used to avoid the interference

 
 
Loop Installation:

 
Trouble Shooting:
 

 
Compared to other brands
 

 
Mass Production:
 
Our production line ensures efficient mass production, rigorous quality control, and thorough pre-shipment testing to deliver Loop detector products of the utmost perfection.
 


 
LD-100 single channel, boxed, 1 type 11pin connects 100-240VAC(EU standard)
LD-102 single channel, boxed, 1 type 11pin connects 12-24VADC(EU standard)
LD-105 single channel, boxed, 2 type 11pin connects 100-240VAC(USA standard)
LD-106 single channel, boxed, 2 type 11pin connects 12-24VADC(USA standard)
 


Certification:


 
 
FAQ:

1. How can we trust you? JUTAI is a professional manufacturer of vehicle loop detectors with over 15 years of experience. We have tested all brands from Europe and China, understanding the differences. Our loop detector is suitable for your projects.

2. Why choose us? We aim for a Win-Win Business Situation!!!

   • JUTAI loop detector comes with a 2-year warranty from the date of delivery.
   • 24/7 after-sales service, with online support for any technical issues.
   • We accept small or big orders (OEM/ODM).
   • Replacement of new products in case of any product problem.
   • Market protection for customers.

3. What is your MOQ? We accept sample orders or big orders. We understand new customers may want to test samples to assess our quality and service.

4. What is your delivery time? Around 2 to 10 working days depending on the exact order quantity and stock availability.

5. Can your products be customized? Yes, certainly. Please discuss your exact requirements with our sales team, as we provide OEM/ODM services.