Explosion-proof keying signal acquisition and conversion module

The utility model discloses an explosion-proof keying signal acquisition and conversion module, which comprises explosion-proof keys, a shielded cable a signal acquisition module, an intelligent digital processing module and a USB interface output module. The explosion-proof keys and the signal acquisition module are connected through the shielded cable, the signal acquisition module and the intelligent digital processing module are connected through copper foil on a circuit board, and the intelligent digital processing module and the USB interface output module are connected through copper foil on the circuit board. The explosion-proof keying signal acquisition and conversion module is reasonable in structure, adopts the advanced data acquisition method and intelligent digital processing technology, simplifies the production process, reduces the complexity of the circuit, lifts restrictions of I/O pins of an MCU or a PLC on number of controlled keys, saves the production cost, effectively ensures the general