Subway platform safety alarm system

The utility model discloses a subway platform safety alarm system. The subway platform safety alarm system comprises a distance measuring module A (1), a single-chip microcomputer A (2), a single-chip microcomputer B (3), human body infrared induction modules (4) and a voice module A (5). The distance measuring module A (1), the single-chip microcomputer A (2), the single-chip microcomputer B (3) and the human body infrared induction modules (4) are connected in sequence. The single-chip microcomputer B (3) is connected with the voice module A (5). According to the subway platform safety alarm system, safety alarming of a subway platform can be achieved. Compared with laser detection, the alarm system is lower in detection cost, and therefore the subway platform safety alarm system can be applied in a large range. In addition, HC-SR501 human body infrared sensors replace a laser transmitter and a laser receiver to carry out detection, cost is lower, sensitivity is better, the induction range is large and wide, and the induction area can be automatically adjusted.