Automatic alarm safety rail

The utility model relates to an automatic alarm safety rail, which comprises support rods, a safety rail belt which is hung on positioning clips of the support rods and an automatic alarm device arranged on the top of the support rod, wherein the automatic alarm device consists of a power supply which is connected in a power supply circuit, a wireless receiving control switch device for receiving a signal of a wireless launcher, a human body infrared inductive switch device which is connected in parallel with the wireless receiving control switch device, a safety alarm lamp and a voice prompt device; the safety alarm lamp, the voice prompt device and the human body infrared inductive switch device are connected in parallel; a control switch K of the wireless receiving control switch device is connected in series with the human body infrared inductive switch device; a control switch K of the human body infrared inductive switch device is connected in series with the safety alarm lamp and the voice prompt device; and the safety alarm lamp is connected in parallel with the voice prompt device. The automatic alarm safety rail detects the activity of near-field personnel by an infrared induction principle and sends a voice alarm signal. The automatic alarm device receives the control of the experimental power supply by a wireless control device, so that the acousto-optic alarm which is synchronous with the pressurizing process of experiments is realized.