The JUTAI Two Channel Vehicle Sensor (Models LD200/LD202) is a
precision-focused solution tailored for car park counting systems,
integrating dual independent channels and configurable direction
modes to deliver accurate bidirectional traffic tracking and
real-time occupancy statistics. It seamlessly adapts to shopping
mall garages, residential complexes, airport parking lots, and
commercial car parks—functioning as a unified directional counting
system or two separate single-channel sensors to meet diverse
layout needs.
- Directional Counting Accuracy: 3 configurable direction modes precisely identify vehicle entry
(CH1→CH2) and exit (CH2→CH1), eliminating duplicate or missed
counts for reliable occupancy data.
- Dual Channel Versatility: Switch between coordinated directional counting or independent
single-channel use—ideal for separating entry/exit lanes or
monitoring multiple parking zones.
- Wide Vehicle Compatibility: 8-level adjustable sensitivity (0.015%–0.8% DL/L) per channel
detects cars, motorcycles, SUVs, and light commercial vehicles,
with a DIP switch-enabled sensitivity boost for trailers or large
vehicles.
- Anti-Interference Design: 4-step selectable frequency (20–100 kHz) avoids cross-talk with
adjacent loops, metal structures, or parking equipment, ensuring
stable counting in crowded car parks.
- Real-Time Status Monitoring: LED indicators display power, channel detection, and loop faults
(short/open circuit or incorrect loop turns), enabling quick
troubleshooting to minimize counting downtime.
- Flexible Power Options: LD200 (100–240V AC) for permanent car park installations; LD202
(12–24V DC) for temporary or mobile counting setups (e.g., event
parking).
- Configurable Operation Modes: Supports pulse output (for counting triggers) and presence hold
(for temporary vehicle monitoring), with 10-minute auto-reset to
resolve misoperations.
- Easy Integration: Dual relay outputs (1 per channel) connect seamlessly to car park
guidance systems, digital displays, or management software for
real-time occupancy updates.
- Commercial Car Parks: Shopping mall, office building, and stadium parking counting,
integrating with guidance displays to direct drivers to available
spaces.
- Residential Gated Parking: Bidirectional entry/exit counting for resident and visitor
vehicles, supporting access control system integration.
- Airport/Port Parking: Long-term and short-term parking occupancy tracking, counting
passenger cars and airport service vehicles.
- Event Parking: Temporary counting for concerts, sports games, or festivals (with
LD202 DC model) to manage traffic flow and inform attendees of
availability.
- Valet Parking Services: Vehicle entry/exit counting and queue management to optimize
valet operations and reduce customer wait times.
- EV Charging Station Parking: Counting and occupancy monitoring for charging bays, preventing
unauthorized use and managing queue flow.
- Open-Air Car Parks: Bidirectional traffic counting for public parks, tourist
attractions, and retail center parking lots.
- Multi-Level Garages: Floor-by-floor counting and direction tracking, feeding data to
central management systems for full garage occupancy oversight.
Connections
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).
3. Switch 1=S1 : Channel 1 Loop Function Selection (10 way dip
switch)
(1)(Switch 1) DIP 1 & DIP 2 Special Sensitivity Increase For Both
Trailer (Both Channels).
(2)(Switch 1=S1) D3, D4, D5 and (Switch 2=S2) D1, D2 Setting
Special Functions (Mode1, 2, 3 Direction Detection. Mode 4, 5, 6
Normal mode, two loop detection are separated)
(3)(Switch 1=S1) D6 & D7 & D8 and (Switch 2=S2) D3 & D4 & D5
Setting CH1 and CH2 Sensitivity Selection (Eight Levels Choices).
(4)(Switch 1=S1) D9 & D10 and (Switch2=S2) D6, D7 Setting Frequency
(20 K to 100 KHz).
* 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.
- Recommended installation overview of basic typical coil turns:
When installation, please keep the product plug and socket in the
vertical direction
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.
The working principle is as follows:
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.
