Drug injection device, driving time symmetry method and recording medium using driving time symmetry algorithm

摘要

The present invention relates to a chemical injection device including a pump module in which driving times are symmetrical, a method for symmetrical driving times, and a recording medium thereof. Specifically, the present invention relates to a pump module including a shaft that reciprocates linearly in one direction, a rotary shaft including a first end connected to the shaft and a second end that rotates and reciprocates by a linear reciprocating motion, and a contact with the second end and at least one sensor for acquiring contact time information, and a controller for determining a driving time of the pump module based on the contact time information, and determining an additional driving time of the pump module based on the driving time.