Case Study
Automotive Seat Heater Control PCBA Functional Test System
This case focuses on automotive control plus load plus communication. The test system organizes online programming, load output, CAN/LIN communication, ADC, FIN output, high voltage and overload verification for seat heater control PCBA.
Case system visualAutomotive seat heater control PCBA test system diagram
Test SoftwareInstrumentationFixtureDUTTraceability
Software, instrumentation, fixture, DUT and production data integration.Project Overview
Functional test case for automotive seat heater control PCBA covering automatic online programming, load verification, CAN/LIN communication, ADC, high voltage, overload and EEPROM data write.
Testing Requirements
- Perform automatic online programming and preliminary voltage test.
- Verify output voltage with a 15A load under project test condition.
- Cover LIN Bus, CAN Bus, ADC, FIN output, high voltage and overload test.
- Write test data to EEPROM through LIN.
System Architecture
NI LabVIEW Test SoftwareProgrammingCAN / LINLoad VerificationADC / HV / OverloadSeat Heater Control PCBA
Key Test Items
Automatic Online ProgrammingPreliminary Voltage TestOutput Voltage Verification with 15A LoadLIN BusCAN BusADCFIN OutputHigh VoltageOverload TestEEPROM Data Write through LIN
Engineering Challenges
- One station needs to combine online programming, load verification, communication and high-voltage related tests.
- 15A load verification is a Project Test Condition and needs to be separated from general system specifications.
- EEPROM data writing needs to be linked with test results through LIN communication flow.
Implementation
- NI LabVIEW is used to organize automated test flow and result judgment.
- CAN/LIN communication, load circuit and measurement resources verify controller functions.
- Online programming, EEPROM writing and functional test are integrated into the production test flow.
Engineering Outcome
- An automotive seat heater control PCBA functional test system was built.
- The test covers project facts including programming, load verification, CAN/LIN, ADC, high voltage and EEPROM data write.
- The 15A load is presented only as a Project Test Condition, not as a platform-wide general specification.
Related Solutions
Related Engineering Capabilities
Automotive CommunicationLoad TestProgrammingMeasurement
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