Loop Detector and Loop Cable Application

Loop Detector and Loop Cable Application

Vehicles and metal objects can be safely identified by a loop embedded in to the driveway, consisting of several coils of copper wire and an inductive loop analyzer of the LOOP-series. Modern technology involving a powerful microprocessor enable a loop analysis over a large induction-area of 20-2000uH. The LOOP-series has 1- and 2-channel variations with several possible settings for:

• changes in the loop frequency

• boost-function suppression of sensitivity)

• detection of direction

• impulse/continuous contact

• output functions

• limiting dwell time

• response delay

• drop-out delay

The flash code of the LED-indicators shows the actual loop frequency and any error diagnosis.

Loop installation

The individual cores should not shift against each other. The loop geometry must not be allowed to change. If possible, the installation should be kept away from any metal objects.

Number of coils in the loop

perimeter	number of coils
U = 3 - 4m	N = 6
U = 4 - 6m	N = 5
U = 6 - 10m	N = 4

The aspect ratio should be between 1:1 and 1:3.

The feed line should be twisted 25 times per meter.

Loop geometry

The loop-width should be equal to or slightly smaller than the widest vehicle passing over the loop.

In order to detect two-wheeled vehicles, the loop should be set up as a trapezium or a parallelogram.

With a two-channel loop-detector it is possible to activate direction detection. The distance between the loops should then be half the length of the vehicle.

When there is only limited room it is advisable to lay the loop in the form of a fi gure 8.

More information contact with Una Lee

Email:una8jutai@gmail.com 

Whatsapp:+8618179436123

Skype:una0305

What's loop detector?

Vehicle loop detector allows for detection of metallic objects entering into the field formed around the detection loop.

JTLD-100 single loop detector is used wherever vehicles have to be detected. For example for monitoring and safe guarding access ways or for counting vehicles. The output signal can be used for controlling door and gate drive mechanisms, operating barriers, controlling traffic light systems in car parks or activating card dispensers in car parks .

JTLD-100 is a single channel inductive loop detector . The principle is based on a change in the inductance within the loop which is caused by the metallic components of passing vehicles. The changes are picked up and evaluated by a microprocessor. Ease of use thanks to automatic calibration when the operating voltage is applied.

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If you want to learn more about loop detector, please contact with me. Email:sales8@jutairfid.com. Whatsapp:+18179436123