Object surface heat flux density detection method, device and equipment

The invention particularly relates to a thermal test technology, and particularly discloses an object surface heat flux density detection method, device and equipment, and the method comprises the steps: setting a time-varying initial heat flux density function of heat flux on a to-be-detected surface of an object; collecting the initial temperature and the ultrasonic propagation duration of the to-be-measured surface of the object; determining theoretical ultrasonic propagation duration according to the initial temperature and the initial heat flux density function; if the difference between the ultrasonic propagation duration and the theoretical ultrasonic propagation duration is small, the initial heat flux function is the heat flux function of the to-be-measured surface of the object; and otherwise, adjusting the initial heat flow density function, and determining whether the initial heat flow density function is accurate according to the mode until an accurate heat flow density function is obtained. Acco