Power control apparatus and method for electric cookers
First Claim
1. A power control apparatus for a electric cooker, comprising:
- an input unit, for setting parameters of temperature control, power control and timing control;
an output unit, for displaying parameters of temperature, power and timing;
a micro controller unit (MCU), being used for processing the inputs of the input unit and controlling the outputs to the output unit while detecting signals of synchronization (SYN), oscillation (OS), over-voltage (OV), and over-current (OC);
a power circuit, for providing power to the power control apparatus;
an exciter-coil circuit, for adjusting the power of the power control apparatus;
an output circuit of insulated gate bipolar transistor, for driving the exciter-coil circuit; and
a drive circuit of insulated gate bipolar transistor (IGBT), being used as voltage transformation interface between the MCU and the output circuit of insulated gate bipolar transistor (IGBT) while being used for driving the output circuit of insulated gate bipolar transistor (IGBT).
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Accused Products
Abstract
A power control apparatus for electric cookers is disclosed, which comprises: an input unit, for setting parameters of temperature control, power control and timing control, etc.; an output unit, for displaying parameters of temperature, power and timing, etc.; a micro controller unit (MCU), having a programmer pulse generator (PPG) and at least an analog/digital converter built therein, being used for processing the inputs of the input unit and controlling the outputs to the output unit while detecting signals of synchronization, oscillation, over-voltage (OV), and over-current (OC); a power circuit, for providing power to the power control apparatus; an exciter-coil circuit, for adjusting the power of the power control apparatus; an output circuit of insulated gate bipolar transistor (IGBT), for driving the exciter-coil circuit; a drive circuit of insulated gate bipolar transistor (IGBT), being used as voltage transformation interface between the MCU and the output circuit of insulated gate bipolar transistor (IGBT) while being used for driving the output circuit of insulated gate bipolar transistor (IGBT), wherein a command can be inputted externally to the MCU for restarting or stopping the output of the PPG; and the PPG is capable of outputting pulses of programmable pulse width, being programmed by a software in view of power control and the protection of power control apparatus.
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Citations
9 Claims
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1. A power control apparatus for a electric cooker, comprising:
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an input unit, for setting parameters of temperature control, power control and timing control;
an output unit, for displaying parameters of temperature, power and timing;
a micro controller unit (MCU), being used for processing the inputs of the input unit and controlling the outputs to the output unit while detecting signals of synchronization (SYN), oscillation (OS), over-voltage (OV), and over-current (OC);
a power circuit, for providing power to the power control apparatus;
an exciter-coil circuit, for adjusting the power of the power control apparatus;
an output circuit of insulated gate bipolar transistor, for driving the exciter-coil circuit; and
a drive circuit of insulated gate bipolar transistor (IGBT), being used as voltage transformation interface between the MCU and the output circuit of insulated gate bipolar transistor (IGBT) while being used for driving the output circuit of insulated gate bipolar transistor (IGBT). - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power control method for electric cooker, adapted for controlling the processes of a MCU built in a power control apparatus, which comprises the step of:
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(1) using a second comparator as a signal source for providing signals to control the restart and output of a programmable pulse generator (PPG) arranged in a MCU, while using a timer and a prescaler for timing and controlling a specific output time of the PPG, wherein the setting of the timer and the prescaler is programmed by a software, and the output of the PPG is stopped as soon as the timing of the specific output time is up;
(2) using a first comparator to provide a signal for stopping the output of the PPG;
(3) controlling the output time of the PPG by using timer cooperating with the prescaler; and
(4) using a control element for disabling/enabling the first and second comparators, and for setting up the timer and the prescaler, and for restarting a disable/enable control, and for stopping the disable/enable control, and for controlling the output of the PPG with respect to the software, and for detecting the status of the PPG. - View Dependent Claims (9)
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Specification