ZigBee dual-node remote control for computer-controlled embroidery machines

Abstract

A dual-node ZigBee control system for computer-controlled embroidery machines, consisting of a local node configured for direct communication with a machine for real-time command execution and status querying, a remote node configured for control via keyboard and cloud dashboard, and a ZigBee connection between the nodes, with authenticated remote commands forwarded to the local node for execution with enforced security interlocks.

Description

AREA OF INVENTION

[0001] The invention relates to control devices for industrial textile machines that integrate wireless ZigBee communication, local machine interface nodes and cloud-connected remote nodes to improve user control, monitoring and productivity. BACKGROUND OF THE INVENTION

[0002] Computer-controlled embroidery machines require precise pattern selection, parameter setting, and job monitoring. These functions are traditionally controlled via the machine's HMI, limiting operator mobility and responsiveness in production. ZigBee networks offer energy-efficient, meshed connections suitable for industrial environments with many nodes and moderate bandwidth. They enable robust and flexible networking of controllers, gateways, and cloud services for remote monitoring and control. Industrial IoT gateways combine ZigBee with Ethernet or cellular, enabling cloud dashboards, remote configuration, and data logging. This reduces downtime and improves equipment utilization. Simultaneously, multi-layered architectures separate sensing, control, and communication for increased reliability and security.A dual-node approach, which combines a local, machine-side node for immediate command execution with a remote, cloud-based node for monitoring and remote input, can improve ergonomics, reduce physical presence at the machine, and accelerate response times to operational requirements in textile manufacturing. SUMMARY OF THE INVENTION

[0003] The invention relates to a two-node ZigBee control system. It consists of a local node (EUCET_CEMNode) directly connected to a computer-controlled embroidery machine for real-time command execution, and a remote node (EUCER CEMNode) connected via ZigBee and gateway services, enabling remote access via a keypad or online dashboard. The local node handles low-latency machine control, safety interlocks, and status queries. The remote node provides user control, job selection, and monitoring, and forwards authenticated commands to the local node for execution via the ZigBee network. A gateway connects the ZigBee network to cloud services for device management, telemetry storage, and notifications. This enables scalable deployment across multiple machines and production halls with centralized monitoring and historical data analysis. DETAILED DESCRIPTION

[0004] The EUCET_CEMNode consists of an embedded controller with digital inputs / outputs and serial interfaces to the embroidery machine's control ports. It performs actions such as start, stop, speed adjustment, pattern selection, and thread break notification using deterministic timing and local safety logic to prevent invalid states. The EUCER_CEMNode provides a user interface via a custom hardware keypad and a web dashboard accessible through the factory network or the cloud. This allows operators to select jobs, adjust parameters, and monitor status remotely. Access control for supervisors and technicians is role-based. ZigBee radio modules on both nodes are integrated into a mesh network with repeaters to ensure coverage throughout the textile production halls.Network planning considers repeater placement and channel selection to minimize interference and maximize reliability in high-density environments. An industrial gateway integrates the ZigBee network with Modbus / MQTT protocols and cloud APIs. It enables device registration, configuration, firmware updates, and telemetry logging, and provides dashboards for visualizing machine status, alarms, and throughput metrics. Command paths are authenticated and rate-limited to prevent congestion or accidental repetitions. The local node enforces interlocks that reject commands conflicting with the machine state and provides immediate stop and safe state fallbacks in case of communication loss.The system supports job queuing and recipe management at the remote node, caches job parameters locally to maintain operation during temporary network outages, and synchronizes with the cloud for complete audit logs once the connection is restored. Telemetry includes stitch counts, error codes (e.g., thread breakage, needle failure), motor temperatures, and cycle times. Cloud analytics correlates alarms with jobs and operators to support training and preventative maintenance. The architecture separates time-critical controls at the local node from monitoring and cloud functions at the remote node and gateway. This increases reliability and minimizes latency for machine operation while enabling enterprise-level visibility and optimization. Security measures include encrypted connections, authenticated node provisioning, and signed firmware updates.Gateway firewalls limit the external attack surface. Device management dashboards provide status displays and over-the-air updates. The system scales to cells with multiple machines by adding EUCET_CEMNodes for each machine and connecting them to shared EUCER_CEMNodes and gateways. This maintains the low power consumption and robustness of the mesh network characteristic of ZigBee implementations in industrial environments.

Claims

[1] A dual-node ZigBee control system for computer-controlled embroidery machines, consisting of a local node configured for direct communication with a machine for real-time command execution and status querying, a remote node configured for control via keyboard and cloud dashboard, and a ZigBee connection between the nodes, with authenticated remote commands being forwarded to the local node for execution with enforced security interlocks. [2] System according to claim 1, further comprising an industrial gateway configured to connect ZigBee to IP networks and cloud services, register devices, log telemetry data and provide dashboards for monitoring and configuring multiple machines. [3] System according to claim 1 or 2, wherein the ZigBee network uses mesh repeaters and channel planning to ensure coverage and reliability in textile halls, and the local node enforces safe behavior in the event of communication failure or conflicting commands. [4] System according to any of the preceding claims, wherein the remote node supports the job queue and recipe management with local caching and synchronized cloud audit trails, and the system uses encrypted communication and signed firmware updates for secure operation.