Case Background
With the rapid growth of the Internet of Things (IoT) and smart homes, intelligent appliances have become an integral part of modern households. Leveraging extensive experience in PCB design, embedded control, and smart hardware integration, KKPCB has developed high-performance washing machine controller PCBAs for leading home appliance manufacturers. These controllers enable intelligent operation, remote monitoring, fault alerts, and device management, enhancing the overall laundry experience for users.
Customer Requirements
The client, a well-known home appliance manufacturer, requested a control PCBA solution for its next-generation smart washing machines. Key requirements included:
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Remote Control: Start, pause, and select washing modes via Wi-Fi or Bluetooth connectivity.
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Intelligent Alerts: Real-time push notifications for wash status, errors, and detergent shortages.
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Device Management: Multi-machine binding for household or shared-use scenarios.
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Reliability: Stable performance under long-term operation and varying environmental conditions.
KKPCB Solution
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Hardware Design: High-reliability MCUs, Wi-Fi/Bluetooth modules, relay control, and power drivers for precise operation of all washing machine functions.
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PCB/PCBA Design: Multi-layer HDI PCBs optimized for signal integrity, power distribution, and EMI/EMC compliance.
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Cloud Connectivity: Real-time communication with cloud servers using MQTT and RESTful APIs for remote control and status monitoring.
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Reliability Optimization: Controllers validated with thermal cycling, vibration, and long-term operation tests to ensure durability and longevity.
Core Function Implementation
| Function | Implementation Method |
|---|---|
| Status & Alerts | MCU + MQTT for real-time notifications of errors and washing status |
| Remote Control | RESTful API for adjusting washing modes, scheduled start, and pause |
| Multi-Device Management | Supports binding, renaming, and removing multiple machines |
| Washing Mode Selection | Standard, Quick, Wool, High-Temperature Sterilization, with custom options |
Project Results
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Performance Improvement: Fast response, stable signals, and fault rate < 0.5%.
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Customer Value: Enhanced high-end product competitiveness and ~25% sales growth for smart washing machines.
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Industry Applications: Smart home appliances, IoT remote control systems, and energy-efficient laundry solutions.
Future Plans
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AI-based smart fault diagnosis
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Smart home integration with speakers, racks, and other connected devices
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Continuous optimization of PCBA design for enhanced reliability and durability
Conclusion
KKPCB’s washing machine controller PCBA solution integrates high-reliability hardware design, IoT connectivity, and smart control technology, offering home appliance manufacturers a comprehensive solution to enhance user experience and accelerate the development of intelligent home appliances.
