Wireless sensor node with hierarchical protection structure

A wireless sensor node with a hierarchical protection structure, characterized by mainly comprising a node hardware circuit and a node hierarchical protection structure, wherein the node hardware circuit comprises a sensor module (11), a data processor module (10) and a wireless communication module (9), and the node hierarchical protection structure comprises a primary sealed protection structure and a secondary strengthened protection structure;

• the primary sealed protection structure comprises an ABS spherical inner shell (15);
• the data processor module (10) and the wireless communication module (9) are disposed in the ABS spherical inner shell (15);
• gaps in the ABS spherical inner shell (15) are filled with EPE cushioning foam (8);
• a flame-retardant and thermal-insulating layer (4) made of a nanometer aerogel insulation blanket is covered on the outside of the ABS spherical inner shell (15);
• the secondary strengthened protection structure comprises a spherical nylon outer shell disposed on the outside of the ABS spherical inner shell (15);
• an inner wall of the spherical nylon outer shell and an outer wall of the ABS spherical inner shell (15) are connected and supported by a group of rubber dampers (3);
• the sensor module (11) is disposed between the inner wall of the spherical nylon outer shell and the outer wall of the ABS spherical inner shell (15);
• and vent holes (13) are provided on the spherical nylon outer shell.