CN101919656A - Liquid level detection method of soymilk machine - Google Patents

Liquid level detection method of soymilk machine Download PDF

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Publication number
CN101919656A
CN101919656A CN2010102397898A CN201010239789A CN101919656A CN 101919656 A CN101919656 A CN 101919656A CN 2010102397898 A CN2010102397898 A CN 2010102397898A CN 201010239789 A CN201010239789 A CN 201010239789A CN 101919656 A CN101919656 A CN 101919656A
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China
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level
liquid level
making machine
bean milk
soy bean
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CN2010102397898A
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CN101919656B (en
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王旭宁
赵道银
郭明升
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Joyoung Co Ltd
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Joyoung Co Ltd
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Abstract

The invention relates to a liquid level detection method of a soymilk machine, comprising the following steps that: (1) a processor outputs low level to a liquid level electrode of a detection circuit and then waits for a time of t1; (2) the processor detects the potential of the liquid level electrode; (3) the processor judges the height of a liquid level inside a cup body of the soymilk machine according to the detected potential of the liquid level electrode, wherein the liquid level inside the cup body of the soymilk machine is judged to be lower than a lowest detecting point of the liquid level electrode when the potential of the liquid level electrode is at high level, therefore the soymilk machine stops working; and the liquid level inside the cup body of the soymilk machine is judged to be higher than the lowest detecting point of the liquid level electrode when the potential of the liquid level electrode is at the low level, therefore the soymilk machine continues to work. The processor outputs the low level to the liquid level electrode before detecting the potential of the liquid level electrode so as to be equivalent to discharge soybean milk inside the cup body of the soymilk machine, therefore the abnormal halt of the soymilk machine, which is caused by erroneous judgment, can be prevented, and liquid level detection is safer and more reliable.

Description

A kind of liquid-level detecting method of soy bean milk making machine
Technical field
The present invention relates to a kind of liquid-level detecting method, relate in particular to a kind of liquid-level detecting method of soy bean milk making machine.
Background technology
At present, the soy bean milk making machine of selling on the market generally all has detection and liquid level detection.As shown in Figure 1, testing circuit is design like this: level electrode SW is connected with power Vcc by resistance R 2, and is connected to the I/O mouth of processor by resistance R 1.When in the soy bean milk making machine cup water being arranged, level electrode SW is by water ground connection, and the current potential that this moment, processor can detect level electrode SW is low level; When in the soy bean milk making machine cup when anhydrous, level electrode SW is earth-free, and testing circuit disconnects, and the current potential that this moment, processor can detect level electrode SW is high level.
But in the liquid level testing process, power Vcc can be charged to the liquid in the cup.After after a while, the electromotive force of liquid can rise; When the electromotive force of liquid rises to a certain degree, even cause under the situation that water is arranged in the cup, the current potential that processor may detect level electrode is high level.This just causes the erroneous judgement of processor, will cause the soy bean milk making machine disorderly closedown.
Summary of the invention
Technical problem to be solved by this invention provides a kind of liquid-level detecting method of safe and reliable soy bean milk making machine.
In order to solve above technical problem, the liquid-level detecting method of soy bean milk making machine of the present invention may further comprise the steps: (1). processor is to the level electrode output low level in the testing circuit, and after output low level stand-by period t1; (2). described processor detects the current potential of level electrode; (3). described processor is judged the height of liquid level in the described soy bean milk making machine cup according to the current potential of detected level electrode, be judged to be liquid level in the described soy bean milk making machine cup and be lower than the minimum sensing point of described level electrode when the current potential of described level electrode is in high level, then soy bean milk making machine quits work; Be judged to be liquid level in the described soy bean milk making machine cup and be higher than the minimum sensing point of described level electrode when the current potential of described level electrode is in low level, then soy bean milk making machine works on.
As a kind of preferred scheme, described processor is t2 to the time of described level electrode output low level, and the time of described detection level electrode current potential is t3, and t2>t3.
As a kind of preferred scheme, t2≤1 second.
As a kind of preferred scheme, described processor is 200 milliseconds to the time t2 of described level electrode output low level.
As a kind of preferred scheme, the time t3 of described detection level electrode current potential is 20 milliseconds.
Because power supply can charge to the liquid in the cup in the liquid level testing process; cause the current potential of liquid in the cup to rise; when the electromotive force of liquid rises to a certain degree; even the liquid level in the cup is higher than the minimum sensing point of level electrode; CPU also may detect high level; thereby cause the CPU erroneous judgement to be lower than the minimum sensing point of level electrode, thereby cause the disorderly closedown of soy bean milk making machine for the liquid level in the cup.By processor before detecting the current potential of level electrode to described level electrode output low level; be equivalent to the slurries in the soy bean milk making machine cup are discharged; can avoid causing the disorderly closedown of soy bean milk making machine, make the liquid level of soy bean milk making machine detect more safe and reliable owing to the erroneous judgement that previous reasons causes.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is to use in the schematic diagram of the testing circuit of the liquid-level detecting method of soy bean milk making machine of the present invention.
The specific embodiment
As shown in Figure 1, the testing circuit that is used in liquid-level detecting method of the present invention is design like this: level electrode SW is connected with power Vcc by resistance R 2, and is connected to the I/O mouth of processor (CPU) by resistance R 1.When in the soy bean milk making machine cup water being arranged, level electrode SW is by water ground connection; When in the soy bean milk making machine cup when anhydrous, level electrode SW is earth-free, and liquid level detection circuit disconnects.The liquid-level detecting method of soy bean milk making machine of the present invention may further comprise the steps: (1). processor is to the level electrode output low level in the testing circuit, and after output low level stand-by period t1; (2). described processor detects the current potential of level electrode; (3). described processor is judged the height of liquid level in the described soy bean milk making machine cup according to the current potential of detected level electrode, be judged to be liquid level in the described soy bean milk making machine cup and be lower than the minimum sensing point of described level electrode when the current potential of described level electrode is in high level, then soy bean milk making machine quits work; Be judged to be liquid level in the described soy bean milk making machine cup and be higher than the minimum sensing point of described level electrode when the current potential of described level electrode is in low level, then soy bean milk making machine works on.
Preferably, described processor is t2 to the time of described level electrode output low level, and the time of described detection level electrode current potential is t3, and t2>t3.
Preferably, t2≤1 second.
Preferably, described processor is 200 milliseconds to the time t2 of described level electrode output low level.
Preferably, the time t3 of described detection level electrode current potential is 20 milliseconds.
Because power supply can charge to the liquid in the cup in the liquid level testing process; cause the current potential of liquid in the cup to rise; when the electromotive force of liquid rises to a certain degree; even the liquid level in the cup is higher than the minimum sensing point of level electrode; CPU also may detect high level; thereby cause the CPU erroneous judgement to be lower than the minimum sensing point of level electrode, thereby cause the disorderly closedown of soy bean milk making machine for the liquid level in the cup.By processor before detecting the current potential of level electrode to described level electrode output low level; be equivalent to the slurries in the soy bean milk making machine cup are discharged; can avoid causing the disorderly closedown of soy bean milk making machine, make the liquid level of soy bean milk making machine detect more safe and reliable owing to the erroneous judgement that previous reasons causes.
Needing ben is that protection scope of the present invention is including but not limited to the above-mentioned specific embodiment.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make some distortion and improvement, these also should be regarded as belonging to protection scope of the present invention.

Claims (5)

1. the liquid-level detecting method of a soy bean milk making machine may further comprise the steps:
(1). processor is to the level electrode output low level in the testing circuit, and after output low level stand-by period t1;
(2). described processor detects the current potential of level electrode;
(3). described processor is judged the height of liquid level in the described soy bean milk making machine cup according to the current potential of detected level electrode, be judged to be liquid level in the described soy bean milk making machine cup and be lower than the minimum sensing point of described level electrode when the current potential of described level electrode is in high level, then soy bean milk making machine quits work; Be judged to be liquid level in the described soy bean milk making machine cup and be higher than the minimum sensing point of described level electrode when the current potential of described level electrode is in low level, then soy bean milk making machine works on.
2. the liquid-level detecting method of soy bean milk making machine according to claim 1 is characterized in that, described processor is t2 to the time of described level electrode output low level, and the time of described detection level electrode current potential is t3, and t2>t3.
3. the liquid-level detecting method of soy bean milk making machine according to claim 2 is characterized in that, t2≤1 second.
4. the liquid-level detecting method of soy bean milk making machine according to claim 3 is characterized in that, described processor is 200 milliseconds to the time t2 of described level electrode output low level.
5. the liquid-level detecting method of soy bean milk making machine according to claim 3 is characterized in that, the time t3 of described detection level electrode current potential is 20 milliseconds.
CN2010102397898A 2010-07-29 2010-07-29 Liquid level detection method of soymilk machine Active CN101919656B (en)

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CN2010102397898A CN101919656B (en) 2010-07-29 2010-07-29 Liquid level detection method of soymilk machine

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Application Number Priority Date Filing Date Title
CN2010102397898A CN101919656B (en) 2010-07-29 2010-07-29 Liquid level detection method of soymilk machine

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CN101919656B CN101919656B (en) 2012-07-11

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105987736A (en) * 2015-02-28 2016-10-05 佛山市顺德区美的电热电器制造有限公司 Water level detection circuit, water level detection and self-inspection method and device
CN109394020A (en) * 2018-11-21 2019-03-01 九阳股份有限公司 A kind of level testing methods of food processor
CN110974029A (en) * 2019-11-07 2020-04-10 九阳股份有限公司 Cooking utensil control method based on water level detection of water tank
CN112683360A (en) * 2020-12-22 2021-04-20 苏州简管家物联技术有限公司 Method for switching working modes of liquid level detection equipment
CN113892873A (en) * 2021-10-19 2022-01-07 北京顺造科技有限公司 Wet surface cleaning equipment and charging and discharging liquid level detection method of wet surface cleaning equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6148666A (en) * 1997-10-29 2000-11-21 Boehringer Mannheim Gmbh Method and device for liquid transfer with an analysis apparatus
CN2472203Y (en) * 2001-03-22 2002-01-16 王晓峰 Level sensor
CN1595075A (en) * 2004-06-18 2005-03-16 李虬 Water level measuring apparatus
JP2009019888A (en) * 2007-07-10 2009-01-29 Panasonic Corp Liquid level detection sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6148666A (en) * 1997-10-29 2000-11-21 Boehringer Mannheim Gmbh Method and device for liquid transfer with an analysis apparatus
CN2472203Y (en) * 2001-03-22 2002-01-16 王晓峰 Level sensor
CN1595075A (en) * 2004-06-18 2005-03-16 李虬 Water level measuring apparatus
JP2009019888A (en) * 2007-07-10 2009-01-29 Panasonic Corp Liquid level detection sensor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105987736A (en) * 2015-02-28 2016-10-05 佛山市顺德区美的电热电器制造有限公司 Water level detection circuit, water level detection and self-inspection method and device
CN105987736B (en) * 2015-02-28 2019-03-08 佛山市顺德区美的电热电器制造有限公司 Water level detection circuit, water level detecting and self checking method and device
CN109394020A (en) * 2018-11-21 2019-03-01 九阳股份有限公司 A kind of level testing methods of food processor
CN110974029A (en) * 2019-11-07 2020-04-10 九阳股份有限公司 Cooking utensil control method based on water level detection of water tank
CN112683360A (en) * 2020-12-22 2021-04-20 苏州简管家物联技术有限公司 Method for switching working modes of liquid level detection equipment
CN113892873A (en) * 2021-10-19 2022-01-07 北京顺造科技有限公司 Wet surface cleaning equipment and charging and discharging liquid level detection method of wet surface cleaning equipment

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Address after: Huaiyin District of Ji'nan City, Shandong Province, 250118 US 999 miles

Patentee after: JOYOUNG Co.,Ltd.

Address before: Xinsha Road, Huaiyin District of Ji'nan city of Shandong Province, No. 12 250118

Patentee before: JOYOUNG Co.,Ltd.