High-sensitivity touch IC-based distance sensing countdown timer

Abstract

The utility model discloses a distance sensing countdown timer based on a high-sensitivity touch IC, which comprises a touch switch TOUCH, a TP0 pin of the touch switch TOUCH is connected with one end of a resistor R3 and one end of a capacitor C5, the other end of the resistor R3 is connected with a motor M2 in series, a VC pin of the touch switch TOUCH is connected with one end of a capacitor C7, and the other end of the capacitor C5 is connected with the other end of the resistor R3. The VDD pin of the touch switch TOUCH is connected with the positive electrode of the capacitor C6 and one end of the capacitor C8; by adjusting the touch IC to the high-sensitivity state, countdown work is triggered by hands across the air, the problems that an existing countdown starting mode is inconvenient to operate, poor in interaction experience and the like are solved, and use convenience and interestingness of a user are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of countdown timer, concretely is a kind of air induction countdown timer based on high sensitivity touch IC. BACKGROUND

[0002] At present, the countdown timer on market generally adopts physical button, touch screen click and so on contact type mode to trigger countdown function. The following deficiencies exist in this operation mode:

[0003] Physical button is easy to wear out for long-term use, and accurate pressing is required during operation, and mis-touch or failure is easy to occur when hand is wet or gloves are worn;

[0004] Touch screen click needs to directly contact screen, and for kitchen and other scenes, user's hand may be contaminated with oil stains or water stains, so that operation is inconvenient and equipment cleaning is affected;

[0005] Traditional trigger mode has single interactive form, lacks interest, and user experience needs to be improved. INVENTION CONTENTS

[0006] The utility model aims at providing a kind of air induction countdown timer based on high sensitivity touch IC to solve the problems raised in the above background.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of air induction countdown timer based on high sensitivity touch IC, including touch switch TOUCH, the TP0 foot of the touch switch TOUCH is connected with the one end of resistance R3 and the one end of capacitor C5, the other end of the resistance R3 is connected with motor M2 in series, the VC foot of the touch switch TOUCH is connected with the one end of capacitor C7, the VDD foot of the touch switch TOUCH is connected with the positive pole of capacitor C6 and the one end of capacitor C8.

[0008] Preferably, the other end of the capacitor C5 is grounded.

[0009] Preferably, the resistance value of the resistance R3 is 1K.

[0010] Preferably, the other end of the capacitor C7, the GND foot of touch switch TOUCH, the negative pole of capacitor C6 and the other end of capacitor C8 are all grounded.

[0011] Preferably, the capacitance of the capacitor C7 is 47×10 3 pF, the capacitance of the capacitor C8 is 10×10 4 pF, the capacitance of capacitor C6 is 220 μF, and the rated withstand voltage value of capacitor C6 is 16V.

[0012] Preferably, the VDD pin of the touch switch TOUCH, the positive pole of the capacitor C6 and one end of the capacitor C8 are connected with the battery supply port VBAT.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] By adjusting the touch IC to a high sensitivity state, the hand air trigger countdown operation is realized, and the problems of inconvenient operation and poor interactive experience of the existing countdown start mode are solved, and the convenience and interest of user use are improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model discloses a circuit diagram. DETAILED DESCRIPTION

[0016] The technical scheme in the utility model embodiment will be clearly and completely described with reference to the accompanying drawings in the utility model embodiments.

[0017] Please refer to Figure 1 The utility model provides a kind of air induction countdown timer based on high sensitivity touch IC, including touch switch TOUCH, the TP0 pin of touch switch TOUCH is connected with the one end of resistance R3 and the one end of capacitor C5, the other end of resistance R3 is connected with motor M2 in series, the VC pin of touch switch TOUCH is connected with the one end of capacitor C7, the VDD pin of touch switch TOUCH is connected with the positive pole of capacitor C6 and the one end of capacitor C8.

[0018] The other end of capacitor C5 is grounded. The resistance value of resistance R3 is 1K. The other end of capacitor C7, the GND pin of touch switch TOUCH, the negative pole of capacitor C6 and the other end of capacitor C8 are all grounded. The capacitance of capacitor C7 is 47x10 3 pF, the capacitance of capacitor C8 is 10x10 4 pF, the capacitance of capacitor C6 is 220uF, and the rated withstand voltage of capacitor C6 is 16V. The VDD pin of touch switch TOUCH, the positive pole of capacitor C6 and the one end of capacitor C8 are all connected with battery supply port VBAT.

[0019] Specific use time: user only needs to approach hand to touch switch TOUCH, need not actual contact, can trigger countdown function. Touch switch TOUCH adopts high sensitivity design, can accurately identify the action of hand approach, and rapidly starts countdown program. The whole operation process is simple and convenient, greatly improves the use experience of user.

[0020] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high sensitivity touch IC based hover responsive countdown timer comprising a touch switch (TOUCH), characterized in that: The TP0 pin of the touch switch TOUCH is connected with one end of the resistor R3 and one end of the capacitor C5, the other end of the resistor R3 is connected with the motor M2 in series, the VC pin of the touch switch TOUCH is connected with one end of the capacitor C7, and the VDD pin of the touch switch TOUCH is connected with the positive pole of the capacitor C6 and one end of the capacitor C8.

2. The hovering inductive countdown timer based on high-sensitivity touch IC according to claim 1, characterized in that: The other end of the capacitor C5 is grounded.

3. The hovering inductive countdown timer based on high-sensitivity touch IC according to claim 1, characterized in that: The resistance value of the resistor R3 is 1K.

4. The hovering inductive countdown timer based on high-sensitivity touch IC according to claim 1, characterized in that: The other end of the capacitor C7, the GND pin of the touch switch TOUCH, the negative pole of the capacitor C6 and the other end of the capacitor C8 are all grounded.

5. The hovering inductive countdown timer based on high sensitivity touch IC according to claim 1, characterized in that: The capacitance of the capacitor C7 is 47 x 10 3 pF, the capacitance of the capacitor C8 is 10 x 10 4 pF, the capacitance of the capacitor C6 is 220 μF, and the rated withstand voltage of the capacitor C6 is 16 V.

6. The hovering inductive countdown timer based on high sensitivity touch IC according to claim 1, characterized in that: The VDD pin of the touch switch TOUCH, the positive pole of the capacitor C6 and one end of the capacitor C8 are all connected with the battery power supply port VBAT.

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