Hall level detecting device

The utility model relates to a Hall level detecting device. The device consists of a framework (1), a pendulum (2), a Hall element (3), a permanent magnet I(4), a permanent magnet II(5) and an operation amplifier (6), wherein the pendulum (2) is suspended on the upper edge of the framework (1) and can freely swing left and right; the Hall element (3) is fixed on the lower surface of the pendulum, and the permanent magnet I(4) and the permanent magnet II(5) are respectively mounted on the left and right two sides of the Hall element (3); when the bottom edge of the framework (1) is level, the distances between the Hall element (3) and the permanent magnets I(4) and II(5) are equal, the output voltage of the Hall element (3) is zero, and the output voltage of the operation amplifier (6) is also zero; when the framework (1) is tilted to the left or the right, the output voltage of the Hall element (3) is not zero, and positive voltage or negative voltage is output by the operation amplifier (6).