The invention discloses an intelligent fan speed regulating method and device based on
equipment temperature feedback, and relates to the field of intelligent fan speed regulation. The method includes allowing a fan to operate at medium speed, and detecting temperature at certain intervals; if an acquired temperature value is faulted, keeping the preceding speed of the fan unchanged; if the acquired temperature value is correct, selecting speed regulating
modes and speed regulating parameters of the fan; in the stepped speed regulating mode, calculating the fan speed according to the current temperature, initial temperature, a temperature step value and a speed start value, and setting the speed of the fan; in the
hysteresis speed regulating mode, if the current temperature is in the operating range of equipment, keeping the preceding speed of the fan unchanged; if the current temperature is higher than the
operating temperature of the equipment, allowing the speed of the fan to rise by one grade at certain intervals till to the highest grade or until the
equipment temperature decreases to the range of the
operating temperature; if the current temperature is lower than the
operating temperature of the equipment, executing the step on the contrary. The intelligent fan speed regulating method and device has the advantages that
fan noise and
power consumption of the equipment can be reduced, the
equipment temperature can be reduced, and energy saving and environment protection can be realized.