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ETC laser coil

ETC Lane Laser Vehicle Separator

ETC laser coil

Non-Contact ETC Lane Vehicle Separator—A “Virtual Inductive Loop” That Requires No Road Cutting, Offers High Precision, and Has a Long Service Life

The ETC laser induction coil is a high-precision vehicle detection and separation device based on laser Time-of-Flight (TOF) technology, specifically designed to replace traditional inductive loop detectors. It is installed above the traffic lane, projecting multiple laser beams to create a “virtual coil” area on the road surface.
Compared to traditional coils, this solution eliminates the need to cut into the road surface; installation and commissioning take only one hour, and it is unaffected by road settlement, water accumulation, or interference from metal grids. The system not only outputs standard I/O trigger signals (compatible with existing lane equipment) but also accurately detects following-distance data, cross-lane movements, and vehicle height information. This completely resolves the issues of following-distance interference and difficult equipment maintenance in ETC lanes, making it an inevitable choice for smart highway construction.

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Overview

Say goodbye to “open-and-repair” and protect road assets.

Traditionally, installing inductive loop sensors requires cutting into the road surface, which not only damages the road's waterproofing layer but also means that if a loop breaks, repairs necessitate closing the lane and re-excavating the area. Laser-based loop sensors, however, utilize... Top-loading method Completely non-contact, it completely eliminates the risk of sensor damage caused by road settlement and heavy vehicle traffic, offering maintenance-free operation throughout its entire lifecycle.

Precise vehicle separation enhances traffic efficiency.

In ETC free-flow mode, vehicles driving closely behind one another often cause coil signals to become stuck together. Laser coils have... Centimeter-level Its spatial resolution enables it to sensitively detect even the tiniest gaps between two vehicles, accurately outputting separation signals, effectively addressing interference from following vehicles, and boosting transaction success rates.

Not just triggering, but also data collection.

A ground induction coil can only detect the presence of metal. A laser coil, on the other hand, can acquire information about vehicles by scanning. Length, height and location information. This wealth of data can be used to support vehicle classification, over-limit warnings, and vehicle trajectory analysis, making lane perception smarter.

Core features

Detection principle: Laser TOF + Virtual Coil Algorithm
Virtual coil: Supports 1–8 virtual coil outputs.
Installation method: Top-mounted directly above (height > 6m)
Vehicle inspection accuracy: ≥99.9%
Trigger response: < 20ms
Data output: I/O (Presence/Trigger) + Serial Port (Dimensions)
Environmental adaptation: Rain and snow filtering algorithm, IP67 protection
Service life: >50,000 hours (MTBF)

A Revolutionary Upgrade to ETC Lane Perception

From busy highway ETC gantries to toll stations on urban bridges and roads, and even to unmanned parking lot entrances and exits, YINTAILI’s laser induction loops are comprehensively replacing traditional inductive loops. Not only do they solve the problem of inductive loops failing to trigger on all-aluminum body vehicles and carbon-fiber sports cars, but their non-contact nature also ensures the integrity of roadways throughout their entire lifecycle, significantly reducing operation and maintenance costs.

Virtual is better than physical; technology is transforming operations and maintenance.

What you see is what you get—adjust the coil position however you like.

Want to adjust the coil’s position? In the past, that meant having to recut the pavement. Now, all you need to do is drag the mouse in the computer software.

The laser coil scans the lane surface and generates corresponding “virtual coil” areas in the software. You can flexibly adjust the front-to-back position and size of the virtual coil based on the actual antenna placement and the angle of the camera, until you achieve the optimal trigger timing. The system supports setting multiple virtual coils, each corresponding to specific logic for capturing images, raising the barrier, and lowering the barrier.

Full-material perception—no vehicle slips through the cracks.

Traditionally, inductive loop sensors rely on electromagnetic induction, which often results in sluggish responses or even missed detections when used with high-end vehicles featuring all-aluminum bodies, carbon-fiber sports cars, or motorcycles.

The laser coil employs the principle of optical reflection, focusing solely on the presence of an object rather than its material composition. Whether it’s metal, carbon fiber, or plastic, as long as a physical object passes through, the system can trigger reliably. This significantly enhances the compatibility of the lane detection system and helps prevent complaints and disputes caused by missed detections.

Smart algorithms ignore rain, snow, and standing water.

Will standing water or ice on the road affect the reflectivity of the laser? We’ve already taken that into account.

YINTAILI’s original creation Road Surface Reference Adaptive Algorithm It can monitor changes in road surface reflectivity in real time. When rain or snow covers the road surface, the algorithm automatically and dynamically adjusts the threshold, ensuring that it neither triggers falsely due to reflected light from standing water nor fails to trigger when snow absorbs light—thus guaranteeing high reliability under all weather conditions.

Completed in one hour, with zero lane closures.

For busy toll stations, lane closure construction is a nightmare. The installation of laser coils is entirely carried out “up in the sky.”

Installation can be carried out using existing ETC gantries or lane canopy structures, eliminating the need to close lanes and ensuring no disruption to normal traffic flow. Single-lane construction and commissioning take only one hour, representing an efficiency improvement of several dozen times compared to the 2-3-day curing period required for inductive loop sensors. In terms of maintenance, all that’s needed later on is wiping the lens—there’s no need to repave the road surface.

YINTAILI All-round Services

Ground Sensing Replacement Assessment

For the renovation of aging lanes, we offer on-site assessment services and can design seamless replacement solutions that require no modifications to your existing controllers.

Installation and Debugging Instructions

Providing detailed illustrated diagrams of the top-mount installation location and remote video guidance to ensure the correct installation angle and optimal coverage.

Interface Compatibility Assurance

Whether your lane machine requires a relay or a level signal, we offer compatible interface harnesses that ensure plug-and-play compatibility.

Explore more potential applications

Efficient, seamless passage through ETC lanes

Addressing the pain points of traditional inductive loop sensors used in ETC lanes—such as road disruption during construction, difficult maintenance, high failure rates, susceptibility to interference leading to missed vehicle detections, and limited functionality that cannot be upgraded—along with the core requirements of “non-destructive installation, precise detection, stable operation and maintenance, and scalable functionality”—the ETC laser coil offers an upgrade solution.

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Order Number	Product line	Product Name	Product abbreviation	Configuration Instructions	Scanning angle	Scanning frequency	Resolution	Measure the distance	10% reflectivity detection range	Accuracy	Input/Output Interface	Anti-light interference	Operating temperature	Power supply voltage	High and low voltage levels	Power consumption	Protection	Housing dimensions	Shell material	Cable length	Applicable scenarios
E20-3 Type	E20-3	ILS-E20-3 Laser Vehicle Detector (a toy)	a child's eyes	Standard	-	<50ms	99.99%	9 meters	9 meters	20mm	2-channel relay output	80,000 Lux	-30~+70℃	DC 24V ±10%	-	48W	IP67	130 mm (length) × 107 mm (width) × 1008 mm (height)	Alloy	-	-
0101127	E20-4	ILS-E20-4 Millimeter-Wave Radar Vehicle Detector	E20-4	Standard	-	≤50ms	99.95%	6 meters	6 meters	-	2-channel relay output	80,000 Lux	-40~+85℃	AC 220V	-	5W	IP65	150 mm (length) × 150 mm (width) × 650 mm (height)	Alloy	-	-
0101132	E20-4	ILS-E20-6 Millimeter-Wave Radar Vehicle Detector	E20-6	Standard		≤50ms	99.95%	6 meters	6 meters		2-channel relay output	80,000 Lux	-40~+85℃	AC 220V		5W	IP65	120mm (length) × 100mm (width) × 60mm (height)	Alloy