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Samsung · Camera · Filed Jan 8, 2026 · USPTO published May 14, 2026 · May 14 release

Samsung Patents an Induction Cooktop That Knows When Your Pot Is Boiling

Samsung is patenting a way for induction cooktops to automatically detect when something on the burner reaches a boil — no thermometer, no camera, just a tiny vibration sensor in the glass.

By · Updated · 3 min read

Samsung Patent: Induction Cooktop That Detects Boiling, figure from US 2026/0136438 A1
Figure from the official USPTO publication.
Publication number
US 2026/0136438 A1(US20260136438A1)
Applicant
Samsung Electronics Co., Ltd.
Filed · Published
Jan 8, 2026 · May 14, 2026
Inventors
Jaeyong KO, Haeseung LEE, Hyunjoon CHOO, Jungsu HA, Jonghun HA
Status when we published
Waiting for an examiner
Document
20 claims
US classification
219/620
Parent application
Continuation of PCT/KR2024/010052 (filed Jul 12, 2024)(PCTKR2024010052)

How Samsung's cooktop 'hears' your water boil

Imagine you put a pot of water on your stove and walk away to chop vegetables. Normally, you'd either keep peeking at the pot or risk a boil-over. Samsung's new patent describes a cooktop smart enough to notice the boil for you — and dial the heat back automatically.

The trick is a small accelerometer (the same kind of sensor that tells your phone which way it's tilted) built into the glass top plate. When water starts to boil, it creates a very specific pattern of vibrations. The cooktop's processor learns what your particular pot on that particular burner looks and feels like before boiling, then watches for the moment that vibration signature shifts.

Once it spots that shift, it can reduce power to keep things at a steady simmer instead of a rolling boil-over. No special cookware required — the sensor works through the glass itself.

How the accelerometer reads boiling through vibration spectra

The system centers on an acceleration sensor (accelerometer) physically coupled to the cooktop's top plate. While the induction coil is heating a vessel, the sensor continuously picks up vibration data from the glass surface.

That raw vibration data gets handed to an arithmetic unit — essentially a signal processor — which converts it into a frequency spectrum (think of a frequency spectrum like an audio equalizer display: it shows how much energy is present at each vibration frequency at any given moment). The key insight is that boiling liquid produces a recognizable and consistent shift in that frequency signature.

Critically, the system doesn't rely on a hardcoded boiling threshold. Instead, the processor first establishes a personalized reference value by observing the frequency spectrum during the early heating phase. This baseline accounts for variables like pot size, material, and amount of liquid. The system then compares all subsequent readings against that learned baseline to detect the transition to boiling.

  • Detects vibration through the glass top plate via accelerometer
  • Converts vibration into a frequency spectrum for analysis
  • Builds a per-session reference baseline before boiling begins
  • Identifies boiling by evaluating deviation from that baseline
  • Controls induction coil output based on the boiling identification

What auto-boil detection means for smart kitchen appliances

For Samsung, this is a plausible differentiator for its premium induction range lineup. Boil detection without a camera or separate temperature probe keeps manufacturing costs reasonable while adding a genuinely useful automation feature. You don't need smart cookware or a paired app — the physics of boiling does the signaling.

More broadly, this patent represents the kind of passive, sensor-fusion intelligence that appliance makers are betting on for the next wave of kitchen automation. If vibration alone can reliably detect a boil, the same approach could theoretically flag other state changes — like a pan running dry or a sauce reaching a simmer — without ever adding a camera or network connection.

Source: US 2026/0136438 A1 at the USPTO (PDF). Full patent text and figures are in the official publication.

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