Micro speaker with capacitors formed by conductive diaphragm and segmented pole plate

A micro speaker, comprising:

• a vibration system including a diaphragm and a voice coil for driving the diaphragm, the diaphragm including a conductive dome and a suspension surrounding the conductive dome;
• the suspension including a pair of long sides, a pair of short sides and arc sides connecting the long sides and the short sides;
• the suspension further including a plurality of conductive pads located on the arc sides respectively, the conductive dome electrically connected to each of the conductive pads;
• wherein the plurality of conductive pads are configured to output electrical signals;
• a magnetic circuit system including a lower plate, a first magnetic part on the lower plate, a second magnetic part on the lower plate, a pole plate attached to the first magnetic part, one of the first and second magnetic part being a permanent magnet for forming a magnetic gap;
• wherein the pole plate is provided with a lead wire, electrical signals from the pole plate are outputted via the lead wire;
• wherein the pole plate includes a plurality of units isolated from each other, and each unit forms a capacitor together with the conductive dome for outputting electrical signals according to vibrations of the diaphragm and for detecting real-time replacement and unbalanced vibration of the diaphragm.