Internet-of-things monitoring instrument for water seal liquid level detection of gas pipe network

An Internet of Things monitoring instrument for gas pipe network water seal liquid level detection comprises a shell base, a central hole is formed in the middle of the shell base, a laser ranging module is fixed to the shell base, and the transmitting end and the receiving end of the laser ranging module are downwards exposed out of the shell base from the central hole; a hollow organic glass tube extending downwards is fixed around the central opening, and a floater is placed in the organic glass tube; the system further comprises a protection shell, an STM32 main control module, an NB-IoT module, a circuit board and a lithium battery are further arranged in the protection shell, the STM32 main control module is used for sending a distance measurement instruction to the laser distance measurement module and receiving distance measurement information of the laser distance measurement module, and the STM32 main control module is further used for sending the received distance measurement information to a remot