Induction hob with boiling detection and induction energy control, method for heating food with an induction hob and computer program product

A computer program product for an induction hob, comprising non-transitory, computer-readable medium having instructions stored thereon that when read by a controller of the induction hob and executed thereby will cause the controller to carry out the method steps:

• measuring audible sound vibrations during heating of food on both a first heating zone and a second heating zone of the induction hob;
• transforming the audible sound vibrations to a frequency power spectrum;
• measuring a temperature associated to the first heating zone;
• detecting a maximum vibration level in the measured audible sound vibrations over time;
• independently detecting a flat slope vibration level;
• wherein the aforementioned detecting steps are started only once the first heating zone has reached a pre-determined temperature;
• identifying the first heating zone based on information from a temperature sensor indicating a higher temperature at the first heating zone and the independently detected flat slope vibration level;
• and
• indicating a boiling state at the first heating zone when the detected flat slope vibration level is higher than an initial vibration level.