Unlock instant, AI-driven research and patent intelligence for your innovation.

Circuit module for capacitor capacity measurement and capable of realizing stacked expansion and liquid level height detection circuit convenient to expand

A technology of circuit module and capacitance capacity, which is used in liquid level indicators for physical variable measurement, capacitance measurement, measurement of resistance/reactance/impedance, etc.

Inactive Publication Date: 2016-05-11
天龙中闽科技有限公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The capacitive liquid level detection circuit is mainly evaluated by the measured capacitance value. Although this method has high precision, the detection result is easily affected by temperature drift and component aging. When humans use water, the water temperature requirements in different occasions are different Similarly, the liquid level detection results of the existing capacitive liquid level detection circuit may be different due to different usage occasions, so for smart homes, the stability of the existing capacitive liquid level detection circuit, Versatility has room for improvement

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
  • Circuit module for capacitor capacity measurement and capable of realizing stacked expansion and liquid level height detection circuit convenient to expand
  • Circuit module for capacitor capacity measurement and capable of realizing stacked expansion and liquid level height detection circuit convenient to expand
  • Circuit module for capacitor capacity measurement and capable of realizing stacked expansion and liquid level height detection circuit convenient to expand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Implementation example 1, such as figure 1 As shown, a superimposed and expandable circuit module for capacitance measurement is characterized in that it includes No. 1 resistor R1, No. 2 resistor R2, No. 3 resistor R3, No. 4 resistor R4, location GND9, and No. 2 diode D2 , No. 3 diode D3, conductor plate 120, No. 1 capacitor C1, No. 1 switch MOS1, No. 2 switch MOS2, No. 0 node P0, No. 1 node P1, No. 1 connection point Q, No. 2 connection point P, fifth Resistor R5;

[0058] The No. 1 switch MOS1 has a switch channel and a control terminal. When the level controlled by the No. 1 switch MOS1 is low, the switch channel of the No. 1 switch MOS1 is turned on. When the level controlled by the No. 1 switch MOS1 is high The level is that the switching channel of the No. 1 switch MOS1 is disconnected;

[0059] The second switch MOS1 has a switch channel and a control terminal. When the level controlled by the second switch MOS1 is high, the switch channel of the second switch...

Embodiment 2

[0072] Implementation example 2, such as figure 2 As shown, a convenient liquid level detection circuit for expansion is characterized in that: it has more than two superimposed and expandable circuit modules for capacitance capacity measurement, and a single-chip microcomputer PIC12F510; each superimposed and expandable circuit module for capacitance capacity measurement The first connection point Q of the circuit module is connected to the second connection point P of another superimposed and expandable circuit module for capacitance measurement, and the second connection point of each superimposed and expandable circuit module for capacitance measurement Point P is connected to the No. 1 connection point Q of another superimposed and expandable circuit module for capacitance measurement, and all the links formed by superimposed and expandable circuit modules for capacitance measurement are non-closed chains; all The superimposed and expandable circuit modules for capacitan...

Embodiment 3

[0099] Implementation example 3, such as image 3 As shown, the difference from the implementation example 2 is that in the implementation example 3, the links formed by all the superimposed and expandable circuit modules for capacitance measurement are closed loop chains.

[0100] What is not described in this description is prior art or common knowledge, so it will not be described in detail.

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

A circuit module for capacitor capacity measurement and capable of realizing stacked expansion is characterized in that the circuit module comprises a resistor NO.1 (R1), a resistor NO.2 (R2),a resistor NO.3 (R3), a resistor NO.4(R4), a place (GND9), a diode NO.2 (D2), a diode NO.3(D3), a conductor pole plate (120), a capacitor NO.1 (C1), a switch NO.1 (MOS1), a switch NO.2 (MOS2), a node NO.0 (P0), a node NO.1 (P1), a connection point NO.1 (Q), a connection point NO.2 (P) and a fifth resistor (R). A liquid level height detection circuit convenient to expand is formed by connecting the circuit modules for capacitor capacity measurement and capable of realizing stacked expansion in series. The circuit module and the liquid level height detection circuit are low in cost, flexible in application, long in service life and stable and reliable.

Description

technical field [0001] The invention belongs to the field of electronic measurement, and in particular relates to a superimposed and expandable circuit module for capacitance capacity measurement and a liquid level detection circuit with convenient expansion. Background technique [0002] Existing liquid level monitoring technologies for liquid containers mainly include floating ball, resistive, and capacitive methods, each of which has its own advantages and disadvantages. [0003] The cost of the existing capacitance detection circuit is relatively high, and there is room for improvement. [0004] The cost of the existing capacitive liquid level detection circuit is relatively high, and there is room for improvement. [0005] The capacitive liquid level detection circuit is mainly evaluated by the measured capacitance value. Although this method has high precision, the detection result is easily affected by temperature drift and component aging. When humans use water, the...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26G01F23/26
CPCG01F23/266G01R27/2605
Inventor 刘伟吴碧洋
Owner 天龙中闽科技有限公司