Touching type switch apparatus of electronic cook ware and input method thereof

Abstract

The invention relates to a touch switch gear and an input method of an electronic cooker. The touch switch gear comprises: an oscillator used for generating a reference clock pulse needed by the touch switch gear; a plurality of touch switches, wherein the frequency of the oscillator changes after human contracting, thus one operation in the touch switches is admitted; a plurality of analog switches, which is used for controlling only one operation at the same time to detect one state among the touch switches at the same time; and a plurality of timing counters, wherein when one timing counter generates overflow, all timing counters stop count at the same time, and the values of the timing counters are read at the same time. By adopting the structure of the invention, software is utilized to set at least more than one analog switch as the start-requiring to be used as the input of the touch switches; then the state of each touch switch is detected, and the software is utilized to conduct the analog switches one by one so as to form the detecting state of the touch switches. The invention can simplify the circuit of the touch switches and increase the stability.

Description

technical field [0001] The invention relates to a touch switch device and an input method of an electronic cooking utensil, in particular to a touch switch device with an internal design of a micro control unit including an RC oscillator (RC OSC), at least one set of analog switches and a relative number of sets. Switch, two sets of 16-bit timing counters. It can simplify the number of peripheral electronic components, and use the control software to adjust the sensitivity of the touch switch, and then use the software interrupt method to obtain the oscillation frequency of the RC oscillator. By detecting the change of the oscillation frequency of the RC oscillator, you can judge The touch switch is in the on or off state, the 16-bit timing counter can accurately obtain the oscillation frequency of the RC oscillator, so as to simplify the touch switch circuit and increase the stability. Background technique [0002] Nowadays, 3C products in the electronics industry occupy a...

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Problems solved by technology

But its shortcoming is the error that program instruction produces, causes calculation RC oscillator 17 frequency not accurate enough, is susceptible to noise interference, and then causes misjudgment touch switch 16 state; And panel micro control unit 14 and peripheral circuit (circuit 15 , 16, 17, 18) need to use more complex procedures and circuits, so the production cost is increased, and it needs to be improved by those engaged in this industry

[0006] Please also see figure 2 As shown in Figure 3, it is a flow chart of detecting 16 touch switches by the traditional electronic cooker panel micro-control unit, and its steps are respec

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