Automatic measurement and control system and method for controller environmental stress screening test

Abstract

The invention provides an automatic measurement and control system and related measurement and control method for a controller environmental stress screening test, and the system is based on a CAN communication protocol, and comprises an integrated embedded single-chip microcomputer, an aging control module of an A / D and D / A conversion circuit, a signal switching module, an aging power supply module, a signal switching module, a power supply bias module, a power supply module, and an upper computer. Automatic control and data storage of a plurality of controllers in a debugging stress screening test, a routine test and a product life extension aging test by one system are realized, the reliability, the stability and the detection precision of the system for an environmental stress screening test are greatly improved, and the accuracy and the traceability of data are ensured; by expanding the system optimization through a CAN communication interface, 120 controllers can be automatically monitored and controlled at the same time, and the detection efficiency of an environmental stress screening test is greatly improved.

Description

technical field [0001] The invention relates to the technical field of controller environmental stress screening test measurement and control, in particular to an automatic measurement and control system for controller environmental stress screening test and related control and measurement and control methods. Background technique [0002] At present, the environmental stress screening test requires manual operation to control the size of the signal source and the duration of power-off, and the input channel selection, input signal polarity, output channel switching, and no-load switching all require manual operation of the switches on the front panel of the burn-in platform. It is impossible to make an alarm and respond in time to the abnormal situation of the test, and it is impossible to monitor the subtle changes of the product performance in the burn-in (also known as the burn-in test) in time. The stress screening test has the characteristics of heavy workload, high op...

AI Technical Summary

Problems solved by technology

[0002] At present, the environmental stress screening test requires human operation to control the size of the signal source and the duration of power-off, and the input channel selection, input signal polarity, output channel switching, and no-load switching all require manual operation of the switches on the front panel of the burn-in platform. Failure to make alarms and timely responses to test abnormalities in time, and unable to monitor subtle changes in product performance during burn-in (also known as burn-in testing) in a timely manner

The stress screening test has the characteristics of heavy workload, high operational risk, and low efficiency, and is also greatly affected by the state of the operator and subjective factors, resulting in unstable monitoring quality, low monitoring accuracy, and poor reliability, which is not conducive to mass production. Long-term quality tracking and record management

Images