从 MEMS 校准到 AI：一枚小芯片背后的工程系统✎ Edit

Years ago, I was building MEMS 系统 where sensors and integrated circuits had to coexist on one chip.

The hardest part was "teaching" the chip through low-level firmware. Over I²C, we streamed sensor data, watched how the device actually behaved, and wrote calibration 参数 back into it, loop after loop.

But the real work was never just the firmware on the chip.

It was the automated validation environment we had to build and keep running. 测试 benches operated 24/7 for months, combining multiplexers, programmable power supplies, precision Druck pressure controllers and pumps, environmental chambers, refrigerators, ovens, temperature controllers, data acquisition 系统, oscilloscopes, and whatever other measurement instruments we needed. That entire stack existed to characterise one tiny piece of silicon across a huge matrix of operating conditions.

Once we had collected enough data, the real engineering started.
We analysed enormous datasets using engineering equations, regression, statistical methods, repeated calibration runs, and countless iterations to extract the right 参数. Reaching production-ready calibration took months - sometimes years.

今天, AI and modern statistical computing can evaluate millions or even billions of possibilities in a fraction of that time. 回归 still uncovers relationships, Monte Carlo still explores uncertainty through simulation, and Bayesian inference still refines probabilities as 新 evidence arrives.

The engineering principle, however, is unchanged.

The most effective production 系统 don't let AI handle every execution. They use AI to discover the optimal solution, validate it, and then bake it into deterministic processes executed by rules engines, parsers, and specialised subsystems.

AI accelerates discovery.
确定性 系统 ensure consistency.
工程 discipline remains the foundation.
科技 has changed. The engineering mindset hasn't.

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