Multi-sensor position measurement system

A multi-sensor position measurement system comprising:

• a base;
• a carrier capable of moving relative to the base;
• a first signal array and a second signal array disposed on the carrier and spaced apart from each other, and respectively having a plurality of signal source elements arranged in sequence, and a signal period of the second signal array being less than a signal period of the first signal array;
• and
• a modular component having a measuring module and a processing unit, wherein the measuring module comprises:
• a first sensor and a second sensor disposed on the base and spaced apart from each other for sensing signals of the first signal array;
• a third sensor and a fourth sensor disposed on the base and spaced apart from each other for sensing signals of the second signal array;
• and
• a first state sensor having a marking unit disposed on the carrier and a sensitive element disposed on the base for sensing signals generated by the marking unit;
• the processing unit receiving signals detected by the sensors and calculating a position of the carrier;
• wherein the measuring module further comprises a second state sensor located at an end of a measuring range of the measuring module and having a marking unit disposed on the carrier and a sensitive element disposed on the base for sensing signals generated by the marking unit.

A multi-sensor position measurement system comprising:

• a base;
• a carrier capable of moving relative to the base;
• a first signal array and a second signal array disposed on the carrier and spaced apart from each other, and respectively having a plurality of signal source elements arranged in sequence, and a signal period of the second signal array being less than a signal period of the first signal array;
• and
• a modular component having a measuring module and a processing unit, wherein the measuring module comprises:
• a first sensor and a second sensor disposed on the base and spaced apart from each other for sensing signals of the first signal array;
• a third sensor and a fourth sensor disposed on the base and spaced apart from each other for sensing signals of the second signal array;
• and
• a first state sensor having a marking unit disposed on the carrier and a sensitive element disposed on the base for sensing signals generated by the marking unit;
• the processing unit receiving signals detected by the sensors and calculating a position of the carrier;
• wherein a measuring range of the measuring module is divided into a positive homing area and a negative homing area by an initial position, and an automatic homing direction of the carrier is estimated through measurement results of the sensors.