Correlation sensor circuit, correlation sensor control method and transmission machine

The invention provides a correlation sensor circuit, a correlation sensor control method and a transmission machine, and belongs to the technical field of semiconductors, the correlation sensor circuit comprises a correlation rod, a correlation rod transmitting end, a correlation rod receiving end, a position sensor and a control circuit, the correlation rod transmitting end and the correlation rod receiving end are both fixed on the correlation rod, and the position sensor is fixed on the correlation rod. A to-be-detected target is arranged between the correlation bar transmitting end and the correlation bar receiving end; the correlation rod receiving end comprises a first receiving circuit and a second receiving circuit which are used for acquiring a first luminous flux change signal and a second luminous flux change signal; and the control circuit determines a detection result of the to-be-detected target according to the first luminous flux change signal, the second luminous flux change signal and the di