Miniature air exhalation pressure gauge

The utility model discloses a miniature air exhalation pressure gauge, which comprises a gauge shell, a gauge cover, a dial plate, a gauge hand, a gauge core and a battery, wherein the dial plate comprises a dial plate scale plate and a dial plate circuit board; a Bluetooth chip, an air pressure sensor chip and a motion sensor chip are arranged on the dial plate circuit board; the meter core comprises an inner joint, a spring tube, a stroke amplification lever, a central gear shaft, a magnetic rotation angle sensor chip and a seat plate; the Bluetooth chip is electrically connected with the air pressure sensor chip, the motion sensor chip, the magnetic rotation angle sensor chip and the battery. According to the scheme, the system is small in size, rich in function and capable of communicating with an external command set in real time through Bluetooth and monitoring the pressure condition of a gas cylinder, the air pressure and temperature conditions of the surrounding environment and the motion state condit