Electric cooker, electric cooker indicating lamp and button reusing scanning circuit and button scanning method thereof
A scanning circuit and scanning method technology, applied in dynamic coding and other directions, can solve the problems that affect input detection, reduce product reliability and user experience, and touch buttons cannot work properly, and achieve the effect of effective detection and improved experience.
Pending Publication Date: 2017-05-31
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
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Problems solved by technology
[0003] like figure 1 and figure 2 As shown, in the multiplexing scanning circuit, when the multiplexing LED indicator of the input detection of a certain light-touch button is short-circuited and fails, it will affect the input detection of the corresponding group of light-touch buttons, resulting in the failure of the light-touch button to work normally. Work, which in turn causes the product not to work properly, reducing the reliability of the product and the user experience
Method used
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Embodiment Construction
[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0029] The following describes the indicator light and key multiplexing scanning circuit for electric cooker, the electric cooker with the scanning circuit and the indicator light and key multiplexing scanning for electric cooker according to the accompanying drawings. The key scanning method of the circuit.
[0030] image 3 It is a circuit diagram of an indicator light and key multiplexing scanning circuit for an electric cooker according to an embodiment of the present invention. Such as image 3 As shown, the indicator lig...
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The present invention discloses an electric cooker, an electric cooker indicating lamp and button reusing scanning circuit and a button scanning method thereof. The circuit comprises: a plurality of first ports are correspondingly connected with multi-group buttons through a plurality of scanning current limit resistors, and are correspondingly connected with multi-group indicating lamp through a plurality of first indication lamp current limit resistors; a plurality of second ports are correspondingly connected with multi-group buttons through a plurality of first diodes, and a plurality of first ports are correspondingly connected with multi-group indication lamps through a plurality of second indication lamp current limit resistors; an isolating circuit is connected between a plurality of first indication lamp current limit resistors and multi-group first indication lamps, the isolating circuit is taken as a button scanning input port at the first ports, and the a plurality of second ports perform isolation of multi-group first indication lamps and the multi-group second indication lamps when being as a button scanning output port. The circuit can perform effective isolation through the isolating circuit when the indication lamp takes place short circuit so as to effectively ensure the reliable work of the buttons.
Description
technical field [0001] The present invention relates to the technical field of multiplexing scanning circuits, in particular to an indicator light and key multiplexing scanning circuit for an electric cooker, an electric cooker with the multiplexing scanning circuit and an electric cooker The key scanning method of the indicator light and the key multiplexing scanning circuit. Background technique [0002] Generally, electric cookers (such as smart electric pressure cookers) have more LED indicator lights and more touch buttons for menu functions, so the panels of electric cookers mostly use LED indicator lights and light touch buttons to multiplex scanning circuits. [0003] Such as figure 1 with figure 2 As shown, in the multiplexing scanning circuit, when the multiplexing LED indicator of the input detection of a certain light-touch button is short-circuited and fails, it will affect the input detection of the corresponding group of light-touch buttons, resulting in th...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H03M11/20
CPCY02B20/40
Inventor 叶镇宝梁三林
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD