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Metrici · Network Controller
Network Access Control for LPR, Barriers & Weighing
(Loop & Scale Controller)Loops. Barriers. Scale. All Over the Network.
Network controller that bridges IP infrastructure to LPR, barriers and truck scales. 4 inductive loop inputs, 4 barrier outputs, RS-232 scale interface. Custom firmware available for any project.
Metrici LAN Controller — Barix Barionet 50 with Metrici firmware
How It Works
From Loop Trigger to Barrier Open
The LAN Controller receives inductive loop triggers and scale weight data, forwards them to Metrici LPR over the network, and executes barrier commands based on LPR access decisions.
01
Loop Detects Vehicle
An inductive loop embedded in the road detects a vehicle presence and sends a trigger signal. The LAN Controller receives up to 4 such inputs simultaneously.
02
Trigger Sent to Metrici
The controller forwards the loop trigger over the network to the Metrici LPR server. Metrici uses it to fire a camera read at exactly the right moment.
03
LPR Decision Made
Metrici reads the plate, checks the database, and sends the access decision back to the LAN Controller over the network — all in under a second.
04
Barrier Opens
The controller activates the appropriate output relay, opening the barrier. For weighing stations, it also reads the scale weight via RS-232 and forwards it to Metrici.
Why Metrici LAN Controller
Business Benefits
Connect physical infrastructure to your IP network — reducing hardware, cabling and integration complexity.
No Proprietary Cabling Needed
Works on standard Ethernet. Connect to your existing IP network — no special cabling, no proprietary connectors, no vendor lock-in.
Reduce Controller Count
One device handles 4 loops, 4 barriers and RS-232 scale data. Replace multiple standalone controllers with a single network-connected unit.
Standard IP Network Infrastructure
Uses 10/100 Ethernet and TCP/IP. IT teams can manage it like any other network device — VLANs, switches, firewalls, remote access.
Custom Firmware for Any Protocol
Non-standard scale protocol? Unusual relay timing? Metrici develops custom firmware to match your specific hardware and workflow requirements.
One Hardware Platform, Multiple Roles
The same device serves as LAN Controller, Observer Radar core and LED Display core. One vendor, one hardware family, multiple applications.
Capabilities
Loops, Barriers, Scales — All Over LAN
Based on Barix Barionet 50 with custom Metrici firmware. Handles inductive loop triggers, barrier commands and RS-232 scale data — all over standard Ethernet.
4 Inductive Loop Inputs
Receives trigger signals from up to 4 inductive loops in the road. Loops trigger LPR reads with precision timing, eliminating false detections.
4 Barrier Outputs
Commands up to 4 barriers or gates independently. Each output is individually controllable based on LPR decisions for that specific lane or entrance.
RS-232 Scale Integration
Reads weight data from industrial truck scales and forwards it to Metrici’s weighing module. Full automation from vehicle arrival to weight record.
LAN / TCP-IP Control
Communicates with the Metrici server over standard Ethernet. No special cabling — works on any existing IP network infrastructure.
Modular Architecture
Operates standalone or as part of a distributed system with multiple units, web servers and control systems across a large site.
Custom Firmware on Request
Metrici’s team can develop a customised firmware version containing functionalities specific to your project. Not a generic device.
Core of Other Metrici Products
The LAN Controller is at the core of the Metrici Observer Radar and LED Display. The same hardware, different firmware for each role.
Wide Application Range
Proven in parking lots, weighing stations, toll gates, industrial parks, ports and any facility needing network-controlled physical access management.
Industry Applications
Deployed Across Parking, Weighing & Industrial
From parking gates and weighing stations to toll plazas and industrial parks — network-controlled access at any scale.
LPR Parking with Loop Triggers
Inductive loops trigger the LPR camera precisely as a vehicle arrives. The LAN Controller forwards the trigger, receives the access decision, and opens the barrier — all automatically.
Weighing Stations
Truck arrives, loop triggers LPR, weight is read from the scale over RS-232 and sent to Metrici alongside the plate — one complete, automated weighing record per transaction.
Toll Stations
Multi-lane toll operations with up to 4 independent lanes per controller. Each loop/barrier pair operates independently under centralised Metrici management.
Port & Terminal Gates
Container yards and port entry gates where multiple vehicle lanes need loop-triggered LPR and individual barrier control from a single network device.
Industrial & Logistics Parks
Distributed sites with multiple entry points. Each LAN Controller manages its local gates independently while connecting to a central Metrici server.
LED Display & Radar Integration
The same hardware platform is used inside the Metrici LED Display and Observer Radar products — giving partners a consistent, familiar device across their installation.
Specifications
Hardware & Network Specs
Barix Barionet 50 platform with custom Metrici firmware. 4 loop inputs, 4 barrier outputs, RS-232 scale interface, 10/100 Ethernet connectivity.
Inputs & Outputs
Digital Inputs4 × inductive loop triggers
Digital Outputs4 × barrier/relay commands
Serial InterfaceRS-232 (industrial truck scale)
Output TypeRelay contact (dry)
Input TriggerVoltage or contact closure
Network & Platform
Base PlatformBarix Barionet 50
Network10/100 Ethernet (LAN)
ProtocolTCP/IP
FirmwareCustom Metrici firmware
OperationStandalone or distributed
Custom firmwareAvailable on request
Custom Firmware — Built for Your Project
The LAN Controller is a programmable platform, not a fixed product. Metrici develops custom firmware for non-standard scale protocols, specific relay timings, unusual trigger sequences or any project-specific requirement.
The same hardware serves as the core of the Metrici Observer Radar and LED Display, with different firmware for each role. This means one familiar device, one vendor, multiple applications across your installation.
⚖️
Weighing Station
Firmware reads the scale over RS-232, syncs with the loop trigger timing, and forwards weight + plate to Metrici in one atomic record.
🟡
LED Speed Display
The Observer Radar uses this hardware to drive the LED sign. Custom firmware translates radar speed data into display commands.
🏭
Industrial Automation
For complex sites, firmware can handle multi-step sequences — loop trigger, camera fire, weight read, barrier open — in a precise, configurable order.
Complementary Solutions
Complete Gate Automation Stack
The LAN Controller connects to Metrici LPR and serves as the hardware core for the Observer Radar and LED Display products.
🔢
Metrici LPR
The LAN Controller feeds loop triggers to the LPR engine and receives barrier commands back. The two are designed to work together out of the box.
Learn more →📡
Metrici Observer Radar
The Observer Radar is built on the LAN Controller hardware platform with Metrici’s radar firmware. Same device, different role.
Learn more →🟡
Metrici LED Display
The LED Display is also built on this platform. The LAN Controller drives the display hardware through its Metrici display firmware.
Learn more →
Ready to Connect
Automate Gates with Network Control
4 loop inputs, 4 barrier outputs, RS-232 scale interface — all over standard Ethernet. Custom firmware on request. Talk to the Metrici team about your installation.
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