In view of the equipment failure caused by small animals breaking into the power distribution station, which causes the electrical safety problem, this human body infrared sensor using pyroelectric infrared sensor is developed, which can detect the temperature change caused by the movement of animals, so as to carry out remote alarm. This product uses the 470MHz Lora wireless communication technology platform, and the communication protocol uses the Internet of Things micro power wireless network communication protocol of the national grid power transmission and transformation equipment to achieve dual-way communication, intelligent monitoring of the operating environment of power equipment, and provide security for the safe operation of power grid equipment.