METTLER TOLEDO AVS Unmanned Vehicle Scale

Overview

The METTLER TOLEDO AVS Unmanned Vehicle Scale is a high-precision, fully automated static weighing system engineered for continuous,无人值守 (unmanned) operation in demanding industrial logistics environments. Designed according to the principles of load cell-based force measurement under static equilibrium conditions, the AVS integrates ruggedized structural engineering with digital signal processing to deliver traceable, repeatable mass measurements compliant with OIML R76 and NTEP Class III requirements. Its primary function is the accurate, high-throughput weighing of commercial vehicles—including trucks, trailers, and railcars—during inbound and outbound material handling at ports, bulk terminals, manufacturing plants, and distribution centers. Unlike conventional pit-mounted or surface-mounted truck scales, the AVS architecture incorporates embedded control logic, real-time axle detection, automatic license plate recognition (ALPR) interface capability, and seamless ERP/MES integration pathways—enabling closed-loop data flow from physical weighing event to enterprise-level inventory and financial systems.

Key Features

• U-shaped cross-section steel deck structure optimized for uniform load distribution and enhanced torsional rigidity—minimizing deflection under off-center loading and ensuring long-term metrological stability.
• Fully sealed internal cavity achieved via continuous submerged arc welding, eliminating moisture ingress points and significantly extending service life in humid, corrosive, or dusty ambient conditions.
• Surface preparation via automated shot blasting prior to coating application—ensuring >95% surface profile conformity per ISO 8501-1 Sa2.5—and enabling optimal adhesion of multi-layer protective finish.
• Dual-coat corrosion protection system: zinc-rich epoxy primer (≥80 µm DFT) followed by UV-stable acrylic polyurethane topcoat (≥60 µm DFT), tested to ISO 12944 C4–C5 environmental classification standards for chemical resistance and weathering durability.
• Structural validation through full-scale fatigue testing: each deck configuration undergoes 1,000,000 cycles of rated capacity loading/unloading on certified hydraulic fatigue test rigs; post-test verification confirms zero permanent deformation and absence of weld discontinuities per AWS D1.1 criteria.
• Modular design supporting rapid field replacement of load cells, junction boxes, and signal conditioning modules—reducing mean time to repair (MTTR) without requiring recalibration of adjacent modules.

Sample Compatibility & Compliance

The AVS scale accommodates standard commercial vehicle configurations up to 120,000 kg gross vehicle weight (GVW), including rigid trucks, articulated tractor-trailers, and intermodal chassis. It supports both single- and dual-platform configurations with optional axle weighing mode for detailed weight-per-axle reporting. All hardware and firmware comply with international metrological and safety directives, including: OIML R76-1:2021 (non-automatic weighing instruments), EN 45501:2015 (electronic weighing instruments), ATEX Directive 2014/34/EU (for optional hazardous area variants), and electromagnetic compatibility per EN 61326-1:2013. The system architecture is designed to support future validation under FDA 21 CFR Part 11 for electronic records and signatures where integrated into regulated manufacturing or logistics operations.

Software & Data Management

The AVS operates with METTLER TOLEDO’s IND570™ or IS6™ terminal firmware—providing configurable weighing protocols, audit trail logging (with user ID, timestamp, and action type), and tamper-evident data integrity checks. Weight data is transmitted via RS-232, RS-485, Ethernet TCP/IP, or optional wireless LoRaWAN interfaces to centralized SCADA or warehouse management systems (WMS). Optional WeighBridge Suite software enables role-based access control, customizable report generation (PDF/CSV/XML), integration with SAP S/4HANA, Oracle EBS, and Microsoft Dynamics 365, and GLP/GMP-compliant electronic signature workflows. All data transfers adhere to TLS 1.2 encryption standards, and local storage retains ≥30 days of raw weighing events with cyclic overwrite protection.

Applications

• Automated gatehouse operations in port terminals and bonded warehouses for import/export cargo reconciliation.
• Raw material intake and finished goods dispatch monitoring in cement, mining, and agrochemical production facilities.
• Inventory reconciliation and loss prevention in bulk commodity trading—supporting real-time margin analysis against purchase/sales contracts.
• Regulatory compliance reporting for national transport authorities (e.g., axle load enforcement, road tax calculation).
• Integration into Industry 4.0 digital twin frameworks—where live weigh data feeds predictive maintenance models and supply chain optimization algorithms.

FAQ

Is the AVS suitable for outdoor installation in extreme temperature ranges?
Yes—the load cells and terminal electronics are rated IP68/IP69K and operate continuously between –30 °C and +60 °C, with thermal compensation algorithms maintaining accuracy across the full range.
Can the AVS integrate with existing ALPR or RFID vehicle identification systems?
Yes—standard API documentation and OPC UA server support enable bidirectional communication with third-party identification hardware and middleware platforms.
What calibration and verification procedures are required for regulatory compliance?
Initial verification must be performed by an accredited body per OIML R76; subsequent periodic verification intervals are defined by national metrology institutes—typically every 12–24 months depending on usage intensity and jurisdictional requirements.
Does the system support remote diagnostics and firmware updates?
Yes—via secure HTTPS-based remote access with two-factor authentication; all updates are digitally signed and validated before installation.