Loop Detector Vehicle Detection - High Sensitivity for Parking
System Barrier Gate
JUTAI Loop Detector is a high-performance vehicle presence sensor
designed for reliable detection in parking barrier gate systems. It
accurately detects vehicles including large trucks by sensing
changes in inductive loops embedded in the road surface. With
adjustable sensitivity and multiple operating modes, this loop
sensor ensures precise vehicle detection for access control and
traffic management applications. Ideal for parking lots, gated
communities, toll booths, and commercial vehicle entrances where
reliable vehicle sensing is critical.
Key Features
- Dual channel vehicle detection
- Adjustable sensitivity for various vehicle types including trucks
- Multiple detection modes for direction and presence
- Relay output for barrier gate control
- Easy loop installation and setup
- LED indicators for power and detection status
- Compact and durable design for outdoor use
Technical Specifications
| Model | LD-200 / LD-202 |
| Power Supply | 100-240V AC (LD-200) / 12-24V DC (LD-202) |
| Detection Type | Inductive Loop Detection |
| Channels | Dual Channel (CH1 and CH2) |
| Output | Relay (NO/COM) |
| Vehicle Types | Cars, Vans, Trucks |
| Sensitivity Adjustment | 7-way and 10-way DIP switch (8 levels, 0.015% to 0.8%) |
| Frequency Range | 20KHz to 100KHz (adjustable) |
| LED Indicators | Power, CH1 Detection, CH2 Detection |
| Loop Connection | CH1 Loop (Pin 3,4), CH2 Loop (Pin 5,6) |
| Relay Output | CH1 Relay COM (Pin 10), CH1 Relay N.O (Pin 11), CH2 Relay COM (Pin
7), CH2 Relay N.O (Pin 8) |
| Ground | Chassis Ground (Pin 9) |
| Operating Temperature | Outdoor use |
| Dimensions | Standard panel mount design |
This loop detector provides an effective solution for automatic
vehicle detection in parking barrier gate systems, ensuring smooth
and secure access control.
Applications
- Traffic Management Systems: Utilized in traffic control systems to detect vehicles at
intersections, toll booths, and parking entrances/exits,
facilitating efficient traffic flow management.
- Gate Automation: Integrated into gate control systems for automatic opening and
closing of gates in residential, commercial, and industrial
settings, enhancing security and convenience.
- Parking Facilities: Installed in parking lots and garages to manage vehicle entry and
exit, count vehicles, and enforce parking regulations, optimizing
parking space utilization.
- Access Control: Employed in access control systems to authorize vehicle entry at
secured locations such as gated communities, industrial facilities,
ensuring controlled access and security.
- Traffic Light Control: Used to trigger traffic light changes based on vehicle presence
and direction, optimizing traffic flow and minimizing congestion at
intersections and roadways.
- Vehicle Counting: Applied in vehicle counting applications for traffic studies,
parking occupancy monitoring, and retail traffic analysis,
providing valuable insights for traffic management and business
operations.
Indicators and Switches
- 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 Selection
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)
Reset Button: Please note: The LD-200 must be reset every time a setting change
is made to the Dip switches.
Installation Precautions and Troubleshooting
- 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
Application
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.
Working Principle
- 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.
