Electric machine tool for monitoring by using motor current track and control method thereof

Abstract

The invention discloses an electric machine tool for monitoring by using a motor current track and a control method thereof. A microprocessor is electrically connected with a motor through a driving unit and a current detection and conversion module; the microprocessor receives an alternating current synchronizing signal; a first control signal is sent to the driving unit according to the alternating current synchronizing signal so as to drive the motor to operate; the current detection and conversion module detects the motor current, converts the motor current and outputs the motor current tothe microprocessor, the microprocessor measures a current value in unit time by taking the alternating-current synchronous signal, converts the current value into a corresponding pressure value, andsends a second control signal to the driving unit according to the pressure value so as to control the operation state of the motor; and by detecting the current track formed by the current in unit time, the purposes of monitoring the load and protecting the motor are achieved.

Description

technical field [0001] The invention relates to an electric tool machine and a control method thereof, in particular to an electric tool machine and a control method thereof for monitoring by using a motor current trace. Background technique [0002] Generally, electric power tools use motors as the main driving core to generate kinetic energy, and the output specifications of hydraulic tools are usually calculated by pressure values, and most of the pressure value setting methods in the prior art use mechanical pressure relief control or Pressure sensor, but in the consideration of improving reliability, the use of pressure sensor is better than mechanical pressure relief control. [0003] For example, No. M435520 "Electric Oil Pressure Tool Detection Device" (hereinafter referred to as the previous case) of Taiwan's new patent case, it is provided with a microcomputer processor, a pressure sensor, a temperature sensor, a battery level sensing circuit, a LED lights and a b...

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above that in order to improve the reliability considerations in the prior art, a pressure sensor is added. As in the previous case, a pressure sensor is also added in order to improve reliability and prevent damage, but the addition of a pressure sensor makes the motor The design and space utilization of machine tools are becoming more difficult and the manufacturing cost is increasing. For manufacturers, the miniaturization and cost of electric machine tools are important issues. Therefore, how to solve the problems of space and cost in the existing technology remains to be seen. The need to further develop better solutions

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