Electric-kettle water level detection method

A technology of water level detection and electric kettle, which is applied in the direction of liquid level indicator, instrument and computer control of physical variable measurement, which can solve the problems of misjudgment, increase of water resistance, large water resistance, etc. short circuit effect

Pending Publication Date: 2017-05-31
何文东
View PDF10 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the connection between the kettle and the coupler is not good, the detected water resistance is very large. At this time, the control circuit of the host may misjudge that there is no water in the kettle; The

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric-kettle water level detection method
  • Electric-kettle water level detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 Shown, propose embodiment 1 of the present invention:

[0038] The electric kettle of the present invention includes a host and a kettle body, the host is provided with a coupler and a single-chip microcomputer, and the single-chip microcomputer includes an I / O terminal and an A / D terminal; the coupler is connected with the single-chip microcomputer, and a chamber is provided in the kettle body. A water level detection probe wrapped with an insulating material is provided at the bottom of the chamber. The pot body and the water level detection probe are respectively connected to the single-chip microcomputer through a coupler. The water level detection probe includes an A terminal and a B terminal. The upper end of the water level detection probe is exposed in the chamber and the vertical distance from the upper end of the water level detection probe to the bottom of the chamber is 5-45mm. The insulating material includes but not limited to ceramics an...

Embodiment 2

[0050] refer to figure 2 Shown, propose embodiment 2 of the present invention:

[0051] A terminal of the water level detection probe is connected in parallel with the capacitor C2 and resistor R2 through a diode D1 and a coupler, and then connected to the A / D terminal of the single-chip microcomputer. I / O terminal connection,;

[0052] It also includes the first group of capacitors. The first group of capacitors is composed of capacitor C1, capacitor CY2 and capacitor CY3 in series, of which capacitor CY2 and capacitor CY3 are safety capacitors; after C1, capacitor CY2 and capacitor CY3 are connected in series, one end is connected to the water level detection probe A One end is connected, and the other end is connected with the pot body;

[0053] It also includes a second group of capacitors. The second group of capacitors is composed of capacitor C4, capacitor CY5 and capacitor CY6 in series, wherein capacitor CY5 and capacitor CY6 are safety capacitors; after capacitor ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an electric-kettle water level detection method. An electric kettle comprises a host and a kettle body, a cavity is defined in the kettle body, and a water level detection head is arranged at the bottom of the cavity; the water level detection head is wrapped with an insulating material and the upper end of the water level detection head is exposed in the cavity; a coupler and a single-chip microcomputer are arranged on the host, and the coupler is connected with the single-chip microcomputer; the kettle body and the water level detection head are respectively connected with the single-chip microcomputer through the coupler, the kettle body, a medium in the kettle, the water level detection head and the like form an equivalent resistance and capacitance circuit, the single-chip microcomputer and the equivalent resistance and capacitance circuit is charged and discharged, water level is judged by the single-chip microcomputer according to charging time of the equivalent resistance and capacitance circuit, and more accurate judgment is achieved; misjudgment due to loose contact of the kettle body and the coupler is avoided, and requirements of a traditional water level detection technology on a water-conductivity resistor are met.

Description

technical field [0001] The invention relates to the technical field of water level detection methods for electric kettles. Background technique [0002] With the wide application of bottom water supply and automatic rotating water tower, the application of electric kettle water level detection is becoming more and more extensive. The traditional technology uses a fixed resistor with a known resistance in series with the water resistor, and then connects a capacitor in parallel for filtering. The A / D port of the battery is used to detect the divided voltage value, and the water level in the kettle is judged according to the size of the voltage value. [0003] If the connection between the kettle and the coupler is not good, the detected water resistance is very large. At this time, the control circuit of the host may misjudge that there is no water in the kettle; The water resistance increases; the difference in water resistance between different water qualities is large, fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G05B19/042G01F23/24
CPCG05B19/0423G01F23/24G05B2219/21137
Inventor 何文东
Owner 何文东
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap