HVAC Controller with Wi-Fi Box Build Test System

Project Overview

Automated box build test case for finished HVAC controller, covering Wi-Fi, Ethernet, CAN, RS485, LED analyzer, IO, watchdog timer, RTC and EEPROM data write.

Testing Requirements

• Verify CAN communication and RS485 communication.
• Perform LED verification through LED analyzer.
• Cover Wi-Fi function, Ethernet function, IO functions, watchdog timer, RTC and EEPROM data write.
• Use NI LabVIEW to organize the finished-product test flow.

System Architecture

Key Test Items

Engineering Challenges

• System-level test needs to be separated from PCBA FCT and focus on functions after assembly.
• One flow needs to cover Wi-Fi, Ethernet, CAN, RS485, IO, RTC, WDT and EEPROM.
• The HVAC project material does not include Wi-Fi TX power or frequency test, so Wi-Fi Test Station content is not merged into this case.

Implementation

• NI LabVIEW manages the box build test flow, communication calls and result judgment.
• Communication, IO, network and LED analyzer resources validate finished HVAC controller functions.
• EEPROM write, RTC, WDT and network functions are included in the box build test flow.

Engineering Outcome

• A box build automated test system was built for finished HVAC controllers.
• The project clearly separates PCBA FCT from system-level functional validation.
• The test content is limited to project-supported facts: Wi-Fi, Ethernet, CAN, RS485, LED, IO, RTC, WDT and EEPROM.

Related Engineering Capabilities