LED lamp detection circuit and LED lamp driving system

The invention discloses an LED lamp detection circuit, relates to the field of LED lamp control, and is mainly used for detecting an LED lamp. Comprising a first power supply and a second power supply. The first power supply outputs the first voltage, the second power supply outputs the second voltage, the first voltage is larger than the second voltage, and the difference value between the first voltage and the second voltage is larger than the conduction voltage of the LED lamp, so that the LED lamp can be lightened. Visibly, the LED lamp can be detected through the first power supply and the second power supply under the condition that a driving chip is not used, the situation that the LED lamp is detected mistakenly due to the fact that the driving chip is abnormal is avoided, and the accuracy and reliability of LED lamp detection are improved. The invention further provides an LED lamp driving system which has the same beneficial effects as the LED lamp detection circuit described above. 本发明公开了一种LED灯检测电路