Independent fault detection and processing circuit for intelligent traffic signal control machine

The invention relates to an independent fault detection and processing circuit for an intelligent traffic signal control machine. The independent fault detection and processing circuit comprises a microprocessor, wherein the signal input end of the microprocessor is connected with a detection circuit used for carrying out voltage and current detection on red, green and yellow lamps, the signal output end of the microprocessor is respectively connected with the control ends of a first switch and a second switch, the first switch is connected with a lamp group live wire, and the second switch is connected with a yellow lamp live wire. The fault detection of the independent fault detection and processing circuit aiming at each signal lamp does not singly depend on the voltage detection or the current detection, the two detection modes are simultaneously adopted for detection, the signal lamps are normal only two detection units are simultaneously correct, or the signal lamps have fault, and the fault detection reliability is improved. In addition, when one lamp group generates the serious mistakes that the red lamp is normally turned off, the red lamp and the green lamp are turned on at the same time, the red and green conflict is generated, and the like, the independent fault detection and processing circuit does not relay on the instructions of a signal machine, a power supply of the signal lamps is switched off through switching off the first switch, then, the yellow lamp is singly driven to do the yellow lamp flickering operation, and the load of a signal machine processor is reduced.