Temperature detection device of heater and control method thereof

The invention discloses a temperature detection device of a heater and a control method thereof. The temperature detection device of the heater comprises a controller, a temperature sensor and a light emitting module. The light-emitting module comprises a plurality of first light-emitting elements; the temperature sensor is used for acquiring the real-time temperature of the heater; the controller is electrically connected with the temperature sensor and the light-emitting module. The controller is used for controlling the number of the first light-emitting elements for emitting light in the light-emitting module according to the real-time temperature obtained by the temperature sensor; wherein the number of the first light-emitting elements for emitting light in the light-emitting module is in positive correlation with the real-time temperature. By the adoption of the technology, the problem that in the prior art, operation and maintenance personnel cannot be reminded to repair or replace the heater in time