Detection circuit, device and method for detecting light source flicker, and photoelectric detection device

A device for detecting light source flicker, comprising:

• a detection circuit that comprises:
• a power supply,
• a photodiode configured to output a current based on a light source,
• a driving circuit connected in series with the photodiode and configured to generate an output voltage based on the current output by the photodiode, a current output by the power supply, and a resistive component, wherein the driving circuit comprises a plurality of circuits with different illumination correlation coefficients, and
• a control unit connected with the driving circuit and configured to select a circuit with a matched illumination correlation coefficient from the driving circuit to control the output voltage within a designated voltage range;
• a V(λ) filter arranged on a light receiving surface of the photodiode of the detection circuit and configured to filter the light source detected by the detection circuit;
• and
• a calculation unit configured to determine a light source flicker parameter for characterizing the light source according to the output voltage of the driving circuit of the detection circuit.

A method for detecting light source flicker, applied to a device for detecting light source flicker, comprising:

• determining a target circuit from a driving circuit according to whether an output voltage of the driving circuit meets a designated voltage range, wherein the target circuit comprises at least one of a plurality of circuits, and the designated voltage range is determined based on a power supply voltage of a circuit connected with a photodiode in the driving circuit;
• determining the output voltage of the driving circuit upon the target circuit being connected with the photodiode;
• and
• determining a light source flicker parameter according to multiple output voltages output by the driving circuit for many times.