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IoT weighing solution

IoT Weighing Solutions for Smart Retail and Inventory Management

Our IoT weighing solutions combine high-precision load cells, strain gauge sensor modules, weighing transmitters, and IoT gateways to create connected weighing systems for real-time weight measurement and inventory monitoring. Supporting Modbus-RTU RS485 and 4-20mA signal outputs, the system enables local PLC integration while also supporting cloud-based data transmission and remote management.

Designed for smart vending cabinets, refrigerated freezers, warehouse racks, and storage bins, these smart weighing systems help automate inventory weighing, detect weight changes, monitor stock levels, and trigger shortage alerts.

IoT Weighing System Architecture

Our IoT weighing system connects high-precision load cells, weighing transmitters, communication networks, and local or cloud-based applications to enable real-time weight monitoring and inventory management.

IoT weighing solution

① Perception Layer

High-precision load cells with multi-point bus connectivity.
Shelf-Mount Load Cell: For smart vending cabinets and refrigerated freezers; 1 g minimum detection, -20°C to +60°C.
Heavy-Duty Shear Beam Load Cell: For warehouse rack and storage bin weighing.

IoT weighing solution

② Signal Processing Layer

Weighing transmitter / signal module for load cell signal processing.
4-20mA: Local PLC integration.
RS485 Modbus-RTU: IoT gateway connectivity.

IoT weighing solution

③ Network Transmission Layer

Wired and wireless communication for cloud data transmission.
Wired: RS485 / Ethernet.
Wireless: 4G DTU / LoRa / Wi-Fi.
Cloud Protocol: MQTT.

IoT weighing solution

④ Application Layer

Local and cloud-based platforms for weighing and inventory management.
Local: HMI / PLC.
Cloud: Web platform / Mobile APP.
Key Functions: Real-time weight reading, inventory statistics, weight change detection, shortage alarms, historical data, report export, and remote calibration.

Application Scenarios & Key Parameters

Our IoT weighing solutions are designed for smart retail, cold-chain vending, and warehouse inventory management, with flexible weighing capacities, communication interfaces, and application-specific features.

ParameterSmart Vending CabinetSmart FreezerWarehouse / Storage
UsageUnmanned retail, open-door shopping, weight-based payment deductionCold drinks, fresh food, refrigerated vending, low-temperature environmentsRack weighing, storage bin weighing, raw material inventory, automated stock monitoring
Capacity5–50 kg per shelf, customizable5–30 kg per shelfLight-duty shelf: 100–500 kg per point
Heavy-duty storage bin: up to 50–60 tons total load
Minimum Detection1 g
Working Temperature-20°C to +60°C
CommunicationRS485 Modbus-RTU multi-drop bus
FeaturesTare auto-compensation; anti-vibration filtering; OTA remote upgradeLow-temperature drift compensation; anti-condensation design
System Integration

Two Solution Modes

We offer two deployment options to meet different project requirements: a cost-effective local on-site solution for PLC-based control and a full IoT cloud solution for remote monitoring and multi-device management.

Local On-Site IoT weighing solution (Cost-Effective)

Mode A: Local On-Site Solution (Cost-Effective)

The local on-site solution includes load cells, a junction box, and a weighing transmitter, with 4-20mA / RS485 signal output to the customer’s local PLC / HMI. All alarm and inventory logic runs on the customer-side equipment, eliminating the need for a cloud server and providing stable operation in on-site environments.

Full IoT Cloud Solution

Mode B: Full IoT Cloud Solution

The full IoT cloud solution integrates load cells, a junction box, a dual-output transmitter, and an industrial IoT gateway. Weighing data is sent simultaneously to the local PLC and uploaded to the cloud via MQTT, enabling real-time monitoring, inventory analysis, alarm notifications, data reports, remote calibration and diagnostics. The solution also supports multi-device fleet management for multiple cabinets and warehouses.

Custom IoT Weighing Solutions

We provide customizable IoT weighing solutions to meet different application, weighing, environmental, and system integration requirements. From load cell selection and mechanical configuration to signal output and deployment mode, the solution can be adapted to the specific requirements of your weighing system.

IoT weighing solution

Custom Weighing Capacity

Custom load capacities are available for different weighing ranges and application requirements. Whether for lightweight shelf weighing in smart vending cabinets or heavy-duty weighing in warehouse racks and storage bins, the load cell capacity can be configured according to the expected load and application conditions.

Custom Load Cell Design

We offer flexible options for load cell type, dimensions, mounting configuration, and cable length to accommodate different equipment structures and installation requirements. Shelf-mounted load cells and heavy-duty shear beam load cells can be selected according to the application and weighing environment.

IoT weighing solution
IoT weighing solution

Communication & Integration

Support 4-20mA and RS485 Modbus-RTU signal outputs for integration with different control and communication systems. The weighing solution can connect to customer PLCs and IoT gateways, enabling both local equipment control and connected data transmission.

Local or Cloud Deployment

Choose a local on-site solution or a full IoT cloud solution based on your monitoring, data management, and connectivity requirements. Local deployment provides a cost-effective option for PLC-based control, while cloud deployment enables remote monitoring, data analysis, alarm notifications, and multi-device management.

IoT weighing solution

Key Benefits of IoT Weighing Solutions

IoT weighing solutions combine high-precision weight measurement with connected data management to help businesses automate weighing, monitor inventory, and respond to weight changes in real time. By connecting weighing sensors with local control systems and cloud platforms, the solution reduces manual inventory checks, improves operational efficiency, and provides greater visibility across multiple devices and locations.

IoT weighing solution

Real-Time Weight Monitoring

Continuously monitor weight changes and inventory levels without manual weighing. Real-time weighing data can be transmitted to local PLC systems or cloud platforms, allowing operators to quickly understand current stock levels and identify changes in inventory.

IoT weighing solution

Automated Inventory Management

Use real-time weight data to automate inventory tracking and reduce manual stock checks. The system can continuously update inventory information based on measured weight, helping improve counting efficiency and reduce the time and labor required for routine inventory management.

IoT weighing solution

Early Shortage Detection

Detect weight changes and trigger shortage or replenishment alerts based on predefined conditions. This helps operators identify low-stock situations earlier and take timely action to reduce the risk of stockouts, especially in unmanned retail and automated storage environments.

IoT weighing solution

Remote Management

Monitor and manage multiple weighing devices through a cloud-based platform. Operators can view weighing data, review historical records, receive alarm notifications, and perform remote calibration or diagnostics without needing to access each device on site.

IoT Weighing Solutions for Your Application

From smart vending cabinets and refrigerated freezers to warehouse inventory systems, our IoT weighing solutions combine high-precision load cells, reliable signal processing, and flexible communication options to enable accurate and connected weight monitoring. Contact us to discuss your application and find the right weighing solution for your project.

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