This article systematically introduces the entire process of custom disinfection cabinet control board, from project initiation, design, prototype, verification, to mass production. It is suitable for engineers, purchasers, and OEM/ODM customers in the household appliance industry.

1. Project Initiation & Requirement Confirmation

The custom development starts with clarifying customer needs, forming a clear technical specification.

1.1 Functional Requirements

Disinfection mode: UV, ozone, high temperature, combined disinfection

Control logic: timing, temperature control, door sensor, child lock

Display: LED digital tube, LCD, touch panel

Interface: relay output, thyristor, heater, fan, indicator light

1.2 Electrical & Environmental Parameters

Input voltage: AC 220V/110V

Working temperature, humidity, anti-interference requirements

Safety standards: IEC, GB, CE, UL

1.3 Appearance & Structure

Board size, mounting holes, connector positions

Matching with disinfection cabinet shell and panel

1.4 Deliverables

Technical agreement

Function definition table

I/O port definition

2. Schematic Design

Engineers carry out circuit design based on the confirmed scheme.

Main Modules

Power supply module: switching power supply or transformer power supply

Main control chip: MCU (single-chip microcomputer)

Driver module: relay / thyristor for heater, fan, UV lamp

Detection module: temperature sensor, door switch, fault detection

Human‑machine interaction: keys / touch, display, buzzer

Protection: over-temperature, over-current, anti-surge

Output: schematic diagram + BOM list.

3. PCB Layout & Design

Carry out PCB layout according to schematic and structure.

Key Points for Disinfection Cabinet Control Board

High-voltage and low-voltage isolation

Heat dissipation layout for relay and power devices

Reasonable wiring to improve EMC performance

Size matching the disinfection cabinet installation space

Output: Gerber files + PCB production files.

4. Prototype Production

Make small-batch samples to verify design.

Process:

PCB proofing

SMT patch + manual plug-in

Burning program

Initial functional test

Output: prototype control board.

5. Software Development & Debugging

The control logic of disinfection cabinet is realized by firmware.

Main Functions

Startup self-check

Disinfection procedure control

Temperature acquisition and closed-loop control

Timing and countdown display

Fault alarm: over-temperature, sensor abnormality, door opening

Indicator and buzzer prompt

Debugging:

Simulated load test

Actual machine test with disinfection cabinet

Long-time running stability test

6. Sample Testing & Certification Preparation

Before mass production, complete reliability and safety tests.

Common Tests

Function and aging test

High and low temperature test

EMC / anti-interference test

Safety test (withstand voltage, insulation)

Certification: CE, CQC, etc.

After passing, samples are confirmed and signed off by the customer.

7. Mold & Tooling Confirmation

For mass production:

Test fixture

Aging rack

Burning fixture

Assembly tooling

Stable tooling helps improve efficiency and consistency.

8. Mass Production Process

Formal production line flow:

SMT mounting: resistors, capacitors, chips, ICs

DIP plug-in: connectors, transformers, relays

Reflow / wave soldering

Program burning

Board test: function, voltage, communication

Aging test: continuous operation for several hours

Appearance inspection & cleaning

Packaging & warehousing

9. Quality Control & Delivery

IQC: incoming inspection of components

IPQC: online inspection during production

FQC: full inspection before delivery

OQC: sampling inspection before shipment

Qualified products are delivered to disinfection cabinet assembly factory.

10. After-Sales & Version Upgrade

Fault analysis and improvement

Batch stability tracking

Function iteration and software upgrade

Customized modification for different models

Summary

The development of a custom disinfection cabinet control board is a complete system engineering:Requirement → Schematic → PCB → Prototype → Software → Test → Mass Production

Stable performance, safety, and compatibility with the disinfection cabinet are the core goals of the whole process.