JUTAI Dual Channel Vehicle Loop Detector Advanced Direction
Detection For Traffic And Parking Management
The JUTAI Dual Channel Loop Detector models LD200 and LD202 are
professional grade detection devices designed for advanced vehicle
monitoring applications Utilizing two independent inductive loops
this detector not only identifies vehicle presence but also
determines the direction of travel making it ideal for traffic
counting parking management and access control systems where
monitoring bidirectional flow is essential
With two completely separate channels each with its own sensitivity
adjustment and relay output the device offers unparalleled
flexibility It supports multiple operating modes configurable via
DIP switches including directional detection presence hold and
pulse output modes to suit a wide array of industrial and
commercial applications
Key Features
Dual independent detection channels for simultaneous monitoring
Advanced directional detection mode identifies vehicle travel
direction
Configurable as two separate detectors or as a coordinated
directional system
Independent 8 level sensitivity adjustment for each channel
Four selectable frequency settings to minimize cross talk
LED indicators for power and individual channel status including
fault diagnostics
Supports 100 to 240V AC LD200 or 12 to 24V DC LD202 power input
Dedicated relay output per channel for presence or pulse signals
Manual reset button for confirming configuration changes
Robust housing suitable for indoor and outdoor installations
Applications
Car park entry and exit counting and occupancy management
Drive through lane vehicle sequencing and control
Toll station traffic flow monitoring and data collection
Industrial site vehicle ingress and egress logging
Warehouse and logistics center high speed door control
Shopping center parking facility entry exit separation
Airport perimeter road traffic monitoring
Bus lane enforcement and unauthorized vehicle detection
Freeway on ramp and off ramp traffic studies
Loading dock traffic management and scheduling
Drive in bank or restaurant queue management
Gate automation systems requiring direction sensing
Traffic signal coordination at intersections
Vehicle classification and counting for municipal planning
Parking guidance system data input
EV charging station entry exit management
Car wash dual lane vehicle detection
Security checkpoint vehicle processing
Agricultural and mining site vehicle flow analysis
Industrial plant internal traffic monitoring and safety
Technical Specifications
| Parameter | Specification |
|---|
| Model | LD200 (AC) / LD202 (DC) |
| Channels | 2 Independent |
| Power Supply | 100–240V AC (LD200) / 12–24V DC (LD202) |
| Frequency Range | 20–100 kHz (4-step selectable) |
| Sensitivity per Channel | 8-level adjustable (0.015% to 0.8% DL/L) |
| Response Time | 10–90 ms (on/off) |
| Operating Temperature | -40°C to +70°C |
| Relay Output | 2 Relays (One per channel COM and NO) |
| Indicators | Power LED (Red) + CH1 & CH2 Detection LEDs (Green) |
| Reset Function | Manual reset button |
| Humidity Tolerance | Up to 95% (non-condensing) |
| Loop Inductance Range | 20–2000 µH per channel |
| Direction Detection Modes | Multiple modes configurable via DIP switches |
DIP Switch Configuration Overview
Switch 1 DIP 1 2 Special trailer sensitivity and auto reset modes
Switch 1 DIP 3 4 5 and Switch 2 DIP 1 2 Select operation mode
Direction Detection or Separate Channels
Switch 1 DIP 6 7 8 and Switch 2 DIP 3 4 5 Set sensitivity for CH1
and CH2 independently
Switch 1 DIP 9 10 and Switch 2 DIP 6 7 Set operating frequency to
avoid interference
Loop Installation Guide
| Loop Perimeter Per Channel | Recommended Turns |
|---|
| 3 to 4 m | 6 turns |
| 4 to 6 m | 5 turns |
| 6 to 10 m | 4 turns |
| 10 to 20 m | 3 turns |
| Over 20 m | 2 turns |
Why Choose JUTAI Dual Channel Loop Detector
Over 15 years of specialized experience in vehicle detection
Advanced directional logic for complex traffic monitoring needs
Rigorous production testing ensuring high reliability and longevity
OEM and ODM services available for product customization
Competitive pricing with support for both small and large quantity
orders
Comprehensive 2 year warranty and dedicated technical support
Order Now and Implement Professional Vehicle Detection and Counting
with JUTAI
Contact us for detailed specifications pricing samples and
customized OEM solutions
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.
