The invention discloses an automobile
atmosphere lamp control method, which relates to the technical field of automobile
atmosphere lamp control, and comprises the following steps of: setting a working frequency range and a
harmonic sensitive bandwidth of a vehicle-mounted communication
bus, and deploying a high-sensitivity electromagnetic sensing probe at the edge of a communication
bus wiring area, the sensor is used for acquiring
electromagnetic radiation signal intensity in a sensitive
frequency band in real time; after the
atmosphere lamp PWM control module is started, a dynamic brightness adjusting task is executed under the conditions of different PWM switching frequencies and duty ratios, and
electromagnetic spectrum density change data in a sensitive
frequency band is recorded at the same time. According to the invention, the electromagnetic sensing probe monitors the interference
frequency spectrum in real time, combines the PWM parameters to establish frequency mapping and quantify the
coupling strength, generates a continuous
electromagnetic coupling strength index, and dynamically drives the filter to accurately suppress the target
frequency band, thereby effectively suppressing the
electromagnetic interference on the CAN / LIN
bus while guaranteeing the effect of the atmosphere lamp, and improving the reliability of the atmosphere lamp. And the whole vehicle communication safety and the
system stability are improved.