CN102155967B - Beancurd making machine detection circuit and detection method thereof - Google Patents
Beancurd making machine detection circuit and detection method thereof Download PDFInfo
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- CN102155967B CN102155967B CN201110052414.5A CN201110052414A CN102155967B CN 102155967 B CN102155967 B CN 102155967B CN 201110052414 A CN201110052414 A CN 201110052414A CN 102155967 B CN102155967 B CN 102155967B
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- probe
- triode thyristor
- bidirectional triode
- chip microcomputer
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Abstract
The invention discloses a beancurd making machine detection circuit comprising a single chip, a temperature sensor, an overflow prevention probe, a first bottom end probe and a second bottom end probe. The prevention probe, the first bottom end probe and the second bottom end probe are respectively connected with the first I/O port, the second I/O port and the third second I/O port of the single chip, and the temperature sensor is respectively connected with the overflow prevention probe and the second bottom end probe. The invention has the advantages that the overflow, the temperature and the water level can be detected, the structure of the beancurd making machine detection circuit can be greatly simplified, the probability of failure caused by the complex structure of the beancurd making machine detection circuit can be reduced, and the cost can be lowered.
Description
[technical field]
The present invention relates to a kind of bean curd machine testing circuit and detection method thereof.
[background technology]
In the prior art, for temperature, the lowest water level and whether anti-overflow that detects bean curd machine, the wiring of the testing circuit of employing is complicated, and needed number of probes is more, and manufacture difficulty is larger, and cost is higher, and safeguards difficult.
[summary of the invention]
In order to solve the problems of the technologies described above, the invention provides circuit structure simple, lower-cost novel bean curd machine testing circuit and detection method thereof.
A kind of bean curd machine testing circuit comprises single-chip microcomputer, anti-overflow probe, the first bottom probe, the second bottom probe and temperature sensor; Described anti-overflow probe, the first bottom probe and the second bottom probe link to each other with an I/O mouth, the 3rd I/O mouth and the 2nd I/O mouth of described single-chip microcomputer respectively; Described temperature sensor respectively with described anti-overflow probe be connected bottom probe and be connected.
Preferably, described single-chip microcomputer is used for, and described the 2nd I/O mouth is set to output low level, reads in the voltage of described the 3rd I/O mouth or current value to judge actual water level and the relation of setting lowest water level.
Preferably, described single-chip microcomputer is used for, and a described I/O mouth is set to output low level, the voltage of described the 2nd I/O mouth or current value is carried out A/D sample to obtain temperature value.
Preferably, described single-chip microcomputer is used for, and described the 3rd I/O mouth is set to output low level, and described the 2nd I/O mouth is set to input state, reads in the voltage of a described I/O mouth or current value to judge whether soya-bean milk overflows.
Adopt technique scheme, only needing three I/O mouths just to finish prior art needs four I/O mouths to the detection of anti-overflow, temperature and water level, greatly simplified the structure of circuit, reduced the probability that breaks down easily because of complex circuit, also provided cost savings simultaneously; Adaptably, utilize electric current and the electric potential difference between the probe and corresponding I/O mouth low level or input/output state be set, finished the detection to anti-overflow, temperature and water level.
Preferably, also comprise motor filter circuit, described motor filter circuit comprises single chip machine controlling circuit, photo-coupler, bidirectional triode thyristor, inductance, the first resistance, the second resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity and described motor; Two ports of the input side of described photo-coupler are connected with two ports of described single chip machine controlling circuit respectively, and two ports of outgoing side are connected with control end with the first end of described bidirectional triode thyristor respectively; Be connected first end with the second end of described bidirectional triode thyristor respectively and be connected in the two ends of described inductance with AC power; The two ends of described the 3rd electric capacity respectively with the first end of motor be connected the first end of AC power and be connected; The first end of described motor is connected with the first end of bidirectional triode thyristor, and the second end is connected with the second end of described AC power; Be connected in parallel on after described the second resistance and the second capacitances in series between the first end and the second end of described bidirectional triode thyristor; Described the first resistance and the second resistance all are connected in parallel between second end and control end of described bidirectional triode thyristor.
Owing to adopted technique scheme, the structure of motor filter circuit is simpler, and the shared volume of circuit is less, and filter effect is better, and electromagnetic radiation is less, and cost is lower.
In order to solve the problems of the technologies described above, the present invention also provides a kind of detection method of bean curd machine, may further comprise the steps: described the 2nd I/O mouth is set to output low level, reads in the voltage of described the 3rd I/O mouth or current value to judge actual water level and the relation of setting lowest water level; A described I/O mouth is set to output low level, the voltage of described the 2nd I/O mouth or current value is carried out A/D sample to obtain temperature value; Described the 3rd I/O mouth is set to output low level, and described the 2nd I/O mouth is set to input state, reads in the voltage of a described I/O mouth or current value to judge whether soya-bean milk overflows.
[description of drawings]
Fig. 1 is a kind of specific embodiment of bean curd machine testing circuit of the present invention;
Fig. 2 is a kind of specific embodiment of motor filter circuit of the present invention.
[embodiment]
Below with reference to accompanying drawing, the specific embodiment of the present invention is described in further detail.
A kind of bean curd machine testing circuit as shown in Figure 1 comprises single-chip microcomputer, anti-overflow probe T3, the first bottom probe T1, the second bottom probe T2 and temperature sensor NTC; Anti-overflow probe T3, the first bottom probe T1 link to each other with the 2nd I/O mouth I/O2 with an I/O mouth I/O1, the 3rd I/O mouth I/O3 of single-chip microcomputer respectively with the second bottom probe T2; Temperature sensor NTC respectively with anti-overflow probe T3 be connected bottom probe T2 and be connected.
Wherein, the first bottom probe T1 and the second bottom probe T2 are arranged on the bottom of the soybean milk cup of bean curd machine, and anti-overflow probe T3 is arranged on the top of soybean milk cup.
In a kind of more specifically embodiment, I/O1, I/O2 and I/O3 are connected with anodal VCC by two resistance R respectively, and pass through respectively a capacitor C and be connected with ground, and T1, T2 and T3 all are inserted on the socket.
When carrying out the lowest water level detection, I/O2 is set to output low level, if this moment, the first bottom probe T1 and the second bottom probe T2 were immersed in water or the soya-bean milk simultaneously, namely electric potential difference and electric current can occur between the two, read in this voltage or current value by I/O3 and then can judge actual water level and setting on the lowest water level; Otherwise, if this moment the first bottom probe T1 and the second bottom probe T2 be not immersed in simultaneously in water or the soya-bean milk, electric potential difference and electric current can not appear between the two, then actual water level needs reminding user or control heater stopped heating setting under the lowest water level.When the soya-bean milk in detecting soybean milk cup or the temperature of water, I/O1 is set to output low level, and the curtage of I/O2 is carried out the A/D sampling, can obtain its temperature value.When carrying out anti-overflow detection, judge namely whether the soya-bean milk in the soybean milk cup is about to overflow, I/O2 is set to input state, to prevent its level value to the impact of I/O1 mouth, I/O3 is set to output low level, reads in current value or the magnitude of voltage of I/O1, there are electric potential difference in T1 and anti-overflow probe T3 if current value is non-vanishing or pop one's head in the first bottom, show that then water level has exceeded the peak level of setting, water namely will overflow, then reminding user, control heater stopped heating or stop to stir; If otherwise there are not electric current or electric potential difference between the first bottom probe T1 and the anti-overflow probe T3, show that then water level does not exceed the highest designated water level, the risk of not overflowing.
The bean curd machine testing circuit also comprises motor filter circuit as shown in Figure 2, comprises single chip machine controlling circuit, photo-coupler OP1, bidirectional triode thyristor TR1, inductance L 1, the first resistance R 1, the second resistance R 2, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3 and motor M; Two ports of the input side of photo-coupler OP1 are connected with two ports of single chip machine controlling circuit respectively, and two ports of outgoing side are connected with control end with the first end of bidirectional triode thyristor TR1 respectively; Be connected first end ACN with the second end of bidirectional triode thyristor TR1 respectively and be connected in the two ends of inductance L 1 with AC power; Be connected first end ACN with the first end of motor M respectively and be connected in the two ends of the 3rd capacitor C 3 with AC power; The first end of motor M is connected with the first end of bidirectional triode thyristor TR1; The second end of motor M is connected with the second end ACL of AC power; Be connected in parallel between the first end and the second end of bidirectional triode thyristor TR1 after the second resistance R 2 and 2 series connection of the second capacitor C; The first resistance R 1 and the first capacitor C 1 all are connected in parallel between the second end and control end of bidirectional triode thyristor TR1.
Wherein, foregoing circuit can also comprise R3, and its two ends are connected to an end of the outgoing side of the first end of TR1 and OP1, in order to the size of current of restricted passage optical coupler.
In the prior art, often adopt the inductance of mH level, the circuit volume is larger, and the present invention only need adopt the inductance of a uH level, greatly reduces the volume of motor filter circuit; Simultaneously, with in parallel with first end and the second end of bidirectional triode thyristor TR1 again after the second capacitor C 2 and 2 series connection of the second resistance R, not only make bidirectional triode thyristor TR1 can not produce misoperation, simultaneously also with inductance and the 3rd electric capacity, form filter network, the high-frequency harmonic that the continuous conducting of Single-chip Controlling TR1 and cut-off are produced has fabulous filter effect, has reduced the electromagnetic radiation of circuit, so that product more environmental protection and green.
Above content is the further description of the present invention being done in conjunction with concrete preferred embodiment, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (1)
1. a bean curd machine testing circuit comprises single-chip microcomputer and temperature sensor NTC, it is characterized in that: also comprise anti-overflow probe, the first bottom probe and the second bottom probe; Described anti-overflow probe, the first bottom probe and the second bottom probe link to each other with an I/O mouth, the 3rd I/O mouth and the 2nd I/O mouth of described single-chip microcomputer respectively; The two ends of described temperature sensor NTC respectively with described anti-overflow probe be connected bottom probe and be connected;
Described single-chip microcomputer is used for, and described the 2nd I/O mouth is set to output low level, reads in the voltage of described the 3rd I/O mouth or current value to judge actual water level and the relation of setting lowest water level;
Described single-chip microcomputer is used for, and a described I/O mouth is set to output low level, the voltage of described the 2nd I/O mouth or current value is carried out A/D sample to obtain temperature value;
Described single-chip microcomputer is used for, and described the 3rd I/O mouth is set to output low level, and described the 2nd I/O mouth is set to input state, reads in the voltage of a described I/O mouth or current value to judge whether soya-bean milk overflows;
Also comprise motor filter circuit, described motor filter circuit comprises single chip machine controlling circuit, photo-coupler, bidirectional triode thyristor, inductance, the first resistance, the second resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity and motor; Two ports of the input side of described photo-coupler are connected with two ports of described single chip machine controlling circuit respectively, and two ports of outgoing side are connected with control end with the first end of described bidirectional triode thyristor respectively; Be connected first end with the second end of described bidirectional triode thyristor respectively and be connected in the two ends of described inductance with AC power; The two ends of described the 3rd electric capacity respectively with the first end of motor be connected the first end of AC power and be connected; The first end of described motor is connected with the first end of bidirectional triode thyristor, and the second end is connected with the second end of described AC power; Be connected in parallel on after described the second resistance and the second capacitances in series between the first end and the second end of described bidirectional triode thyristor; Described the first resistance and the first electric capacity all are connected in parallel between second end and control end of described bidirectional triode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110052414.5A CN102155967B (en) | 2011-03-04 | 2011-03-04 | Beancurd making machine detection circuit and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110052414.5A CN102155967B (en) | 2011-03-04 | 2011-03-04 | Beancurd making machine detection circuit and detection method thereof |
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| Publication Number | Publication Date |
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| CN102155967A CN102155967A (en) | 2011-08-17 |
| CN102155967B true CN102155967B (en) | 2013-04-10 |
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| CN103808384B (en) * | 2012-11-07 | 2016-10-05 | 国家电网公司 | The alarm device of cable interlayer water inlet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201398410Y (en) * | 2009-03-23 | 2010-02-10 | 励春亚 | Multi-level overflow-proof probe |
| CN201624537U (en) * | 2009-12-30 | 2010-11-10 | 九阳股份有限公司 | Multifunctional sensor for soymilk maker |
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2011
- 2011-03-04 CN CN201110052414.5A patent/CN102155967B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201398410Y (en) * | 2009-03-23 | 2010-02-10 | 励春亚 | Multi-level overflow-proof probe |
| CN201624537U (en) * | 2009-12-30 | 2010-11-10 | 九阳股份有限公司 | Multifunctional sensor for soymilk maker |
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| CN102155967A (en) | 2011-08-17 |
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Effective date of registration: 20170824 Address after: 517541 Guangdong city of Heyuan province Dongyuan County Shun Tian Zhen Wei Zhen Patentee after: Heyuan SHUNFA Electronic Technology Co., Ltd. Address before: 518000 Guangdong Province, Shenzhen City Guangming Road No. 18 white Yingtang Technology Industrial Park C building five floor Patentee before: Shenzhen City Xia Zi Tang Electronic Manufacturing Co., Ltd. |
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