COMBINATION ELECTRIC TOOL AND CONTROL METHOD THEREFOR
First Claim
1. A combination electric tool comprising:
- at least one main body;
at least one working part drivable by the main body and which may be separated from or attached to the main body;
the main body including an electric motor and a control circuit, the control circuit including a signal recognition module having a microcontroller; and
the working part including an identification module, the signal recognition module and the identification module being one of electrically connected and in wireless communication such that the microcontroller can recognize the working part.
1 Assignment
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Accused Products
Abstract
A combination electric tool includes a main body and at least one working part drivable via and separably attachable to the main body. The main body includes an electric motor and a control circuit with a signal recognition module having a microcontroller. The working part includes an identification module, the signal recognition module and the identification module being communicable such that the microcontroller can recognize the working part. A control method includes attaching the main body to the working part; judging which kind of working part is attached and selecting corresponding preset programs; sampling a working parameter value of the electric motor; comparing the sampled working parameter value of the electric motor with a corresponding preset value, and judging whether the electric motor is at an abnormal working state; and if yes, powering off the electric motor, and if no, returning to the previous step.
49 Citations
12 Claims
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1. A combination electric tool comprising:
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at least one main body; at least one working part drivable by the main body and which may be separated from or attached to the main body; the main body including an electric motor and a control circuit, the control circuit including a signal recognition module having a microcontroller; and the working part including an identification module, the signal recognition module and the identification module being one of electrically connected and in wireless communication such that the microcontroller can recognize the working part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A control method for the combination electric tool having a main body and at least one working part, the main body having an electric motor and a control circuit having a microcontroller, the control method comprising the following steps:
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(1) attaching the main body to the working part; (2) judging which kind of working part is attached and selecting corresponding preset programs using the microcontroller; (3) sampling a working parameter value of the electric motor using the microcontroller; (4) comparing the sampled working parameter value of the electric motor with a corresponding preset value, and judging whether the electric motor is at an abnormal working state; and (5) if yes as judged in step (4), powering off the electric motor, and if no as judged in step (4), returning to the step (4). - View Dependent Claims (11, 12)
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Specification