Air pressure sensor and shock wave signal monitoring and alarming device adopting same

The invention discloses an air pressure sensor and a shock wave signal monitoring and alarming device adopting the same. The air pressure sensor comprises a hard shell internally provided with a closed cavity, and a pipe joint with a shock wave signal inlet hole in the middle is installed on the hard shell; a dual-pressure sensor and a circuit board are arranged in the closed cavity, and the dual-pressure sensor is used for detecting air pressure entering from the shock wave signal inlet hole and transmitting two collected pressure measurement values to the circuit board; the circuit board is used for collecting pressure measurement values sent by the double-pressure sensor, performing binary multiple fitting on the two pressure measurement values to obtain final pressure data, performing pressure threshold value judgment according to the pressure data, and outputting a pulse switching value signal when a positive and negative pressure alarm threshold value is exceeded; and the shell is also provided with a s