Position sensing device

Abstract

This application discloses a position sensing device, comprising: a housing with a cavity extending vertically within it; a gravity member movably mounted vertically within the cavity; a traction rope passing through the top of the housing into the cavity and connected to the gravity member; when an external force is applied to the end of the traction rope located outside the housing, the gravity member can move vertically under the traction of the traction rope, the end of the traction rope located outside the housing being used to connect to a moving part of the equipment; and multiple position sensors spaced apart along the extension direction of the housing, the position sensors being configured to send a sensing signal when the gravity member moves to the height of the position sensor. By setting up a gravity member and a traction rope to simulate the movement of the moving parts of the equipment, the position of the moving parts of the equipment is indirectly determined by sensing the position of the gravity member through the position sensors, reducing the risk of position sensor failure due to collisions. The housing also effectively reduces the risk of contamination and interference to the sensing parts of the position sensors.

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