CN109338692B - Washing machine drying time control system and method and washing machine - Google Patents
Washing machine drying time control system and method and washing machine Download PDFInfo
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- CN109338692B CN109338692B CN201811377529.XA CN201811377529A CN109338692B CN 109338692 B CN109338692 B CN 109338692B CN 201811377529 A CN201811377529 A CN 201811377529A CN 109338692 B CN109338692 B CN 109338692B
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- 238000005406 washing Methods 0.000 title claims abstract description 58
- 238000001035 drying Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims description 30
- 230000001419 dependent effect Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/30—Drying processes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/26—Heating arrangements, e.g. gas heating equipment
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to a washing machine drying time control system, a washing machine drying time control method and a washing machine, wherein the system comprises: a humidity sensor, a comparator circuit, a control circuit and a heating device; the humidity sensor is used for detecting the humidity in the tub when the washing machine is in a drying state; the input end of the comparator circuit is connected with the output end of the humidity sensor and is used for outputting a level signal according to the humidity in the barrel and the humidity threshold value; the input end of the control circuit is connected with the output end of the comparator circuit, and the output end of the control circuit is connected with the heating device and used for controlling the heating device according to the level signal output by the comparator circuit. According to the technical scheme provided by the invention, the drying degree of the clothes is judged according to the humidity condition in the detection barrel of the humidity sensor, the humidity in the barrel is monitored in real time, and the controllable drying time is realized.
Description
Technical Field
The invention belongs to the field of washing machine control, and particularly relates to a washing machine drying time control system and method and a washing machine.
Background
With the continuous improvement of the living standard of people, the washing machine gradually enters common families and extends to thousands of families. Under the drive of the continuous updating and development of the technology, the functions of the washing machine are gradually improved, and the drying function of the washing machine is one of the functions.
The drying technology of the existing washing machine mainly comprises three types: steam, condensation and heat pump. Among them, steam type drying is the most commonly used drying technique, and steam type drying is realized by setting a fixed drying time, and the drying function is stopped when the time comes. The fixed time drying has the problems of over-drying (too long drying time) or under-drying (too short drying time) under some conditions, and if the drying time is too long, the waste of electric resources can be caused.
Therefore, it is desirable to provide a drying time control system and method for a washing machine and a washing machine to solve the problems of the prior art.
Disclosure of Invention
The invention provides a washing machine drying time control system and method and a washing machine, and aims to solve the problems that in the prior art, drying time is fixed and drying time cannot be controlled according to different actual conditions.
A drying time control system of a washing machine, applied to the washing machine, the system comprising: a humidity sensor, a comparator circuit, a control circuit and a heating device;
the humidity sensor is used for detecting the humidity in the tub when the washing machine is in a drying state;
the input end of the comparator circuit is connected with the output end of the humidity sensor and is used for outputting a level signal according to the humidity in the barrel and the humidity threshold value;
the input end of the control circuit is connected with the output end of the comparator circuit, and the output end of the control circuit is connected with the heating device and used for controlling the heating device according to the level signal output by the comparator circuit.
Further, the comparator circuit includes: a first circuit, a voltage divider circuit and a comparator;
the first circuit is connected with a first input end of the comparator;
the voltage division circuit is connected with a second input end of the comparator;
and the output end of the comparator is used for outputting a level signal.
Further, the voltage dividing circuit comprises a first resistor, a second resistor and a second capacitor, and is used for adjusting the voltage value of the second input of the comparator;
the first end of the first resistor is connected with a first power supply signal terminal, and the second end of the first resistor is respectively connected with the first end of the second resistor, the first end of the second capacitor and the second input end of the comparator;
the second end of the second resistor is grounded;
and the second end of the second capacitor is connected with the second end of the second resistor.
Further, the first circuit comprises a third resistor and a first capacitor;
the first end of the third resistor is connected with the output end of the humidity sensor, and the second end of the third resistor is respectively connected with the first end of the first capacitor and the second input end of the comparator;
the second end of the first capacitor is grounded.
Further, the control circuit includes: the fourth resistor, the third capacitor, the switching triode and the relay;
the first end of the fourth resistor is connected with the output end of the comparator circuit, and the second end of the fourth resistor is respectively connected with the first end of the third capacitor and the base electrode of the switching triode;
the second end of the third capacitor is grounded;
and an emitter of the switching triode is connected with the second end of the third capacitor, and a collector of the switching triode is connected with the first end of the relay and used for controlling the on-off of the relay.
The relay further comprises a piezoresistor, wherein the first end of the piezoresistor is connected with the first end of the relay, and the second end of the piezoresistor is connected with the second end of the relay;
and the second end of the relay is connected with the second power supply signal terminal, the third end of the relay is connected with the third power supply signal terminal, and the fourth end of the relay is connected with the heating device.
A drying time control method of a washing machine applied to a washing machine including a humidity sensor and a heating device, the method comprising:
detecting the humidity in the tub when the washing machine is in a drying state through a humidity sensor;
judging whether the humidity in the barrel is greater than a humidity threshold value;
and controlling the heating device to be opened or closed according to the judgment result.
Further, the controlling the opening and closing of the heating device according to the judgment result includes:
when the humidity in the barrel is larger than the humidity threshold value, a heating device is started to heat;
detecting the humidity in the tub of the washing machine;
and when the humidity in the barrel is detected to be less than or equal to a humidity threshold value, the heating device is turned off.
A washing machine comprises the washing machine drying time control system.
Compared with the closest prior art, the technical scheme provided by the invention has the following advantages:
according to the technical scheme provided by the invention, the humidity in the drum when the washing machine is in a drying state is detected through the humidity sensor, the humidity in the drum and the humidity threshold value are judged through the comparator circuit, the corresponding level is output, and finally the heating device is controlled to be opened and closed through the control circuit. According to the technical scheme provided by the invention, the drying degree of the clothes is judged according to the humidity condition in the detection barrel of the humidity sensor, the humidity in the barrel is monitored in real time, and the controllable drying time is realized.
Drawings
FIG. 1 is a schematic diagram of a drying time control system of a washing machine according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a comparator circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a control circuit according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for controlling drying time of a washing machine according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the present invention provides a drying time control system for a washing machine, applied to a washing machine, the system comprising: a humidity sensor, a comparator circuit, a control circuit and a heating device;
the humidity sensor is used for detecting the humidity in the tub when the washing machine is in a drying state;
the input end of the comparator circuit is connected with the output end of the humidity sensor and is used for outputting a level signal according to the humidity in the barrel and the humidity threshold value;
the input end of the control circuit is connected with the output end of the comparator circuit, and the output end of the control circuit is connected with the heating device and used for controlling the heating device according to the level signal output by the comparator circuit.
In this application embodiment, detect the interior humidity of bucket when washing machine is in the stoving state through humidity transducer, the rethread comparator circuit judges the size of humidity and humidity threshold value in the bucket, outputs corresponding level, and the switching through control circuit control heating device at last. According to the technical scheme provided by the invention, the drying degree of the clothes is judged according to the humidity condition in the detection barrel of the humidity sensor, the humidity in the barrel is monitored in real time, and the controllable drying time is realized.
As shown in fig. 2, in some embodiments of the present application, a comparator circuit includes: a first circuit, a voltage divider circuit and a comparator;
the first circuit is connected with a first input end of the comparator;
the voltage division circuit is connected with a second input end of the comparator;
and the output end of the comparator is used for outputting a level signal.
In some embodiments of the present application, the voltage divider circuit includes a first resistor, a second resistor, and a second capacitor for adjusting a voltage value of the second input of the comparator;
the first end of the first resistor is connected with a first power supply signal terminal, and the second end of the first resistor is respectively connected with the first end of the second resistor, the first end of the second capacitor and the second input end of the comparator;
the second end of the second resistor is grounded;
and the second end of the second capacitor is connected with the second end of the second resistor.
In some embodiments of the present application, the first circuit includes a third resistor and a first capacitor;
the first end of the third resistor is connected with the output end of the humidity sensor, and the second end of the third resistor is respectively connected with the first end of the first capacitor and the second input end of the comparator;
the second end of the first capacitor is grounded.
As shown in fig. 3, in some embodiments of the present application, the control circuit includes: the fourth resistor, the third capacitor, the switching triode and the relay;
the first end of the fourth resistor is connected with the output end of the comparator circuit, and the second end of the fourth resistor is respectively connected with the first end of the third capacitor and the base electrode of the switching triode;
the second end of the third capacitor is grounded;
and an emitter of the switching triode is connected with the second end of the third capacitor, and a collector of the switching triode is connected with the first end of the relay and used for controlling the on-off of the relay.
In some embodiments of the present application, the control circuit further comprises a voltage dependent resistor, a first terminal of the voltage dependent resistor being connected to a first terminal of the relay, a second terminal of the voltage dependent resistor being connected to a second terminal of the relay;
and the second end of the relay is connected with the second power supply signal terminal, the third end of the relay is connected with the third power supply signal terminal, and the fourth end of the relay is connected with the heating device.
As shown in fig. 3, RV1 is a voltage dependent resistor and mainly used for protecting the relay and preventing the relay from being damaged by too high voltage when the voltage of 24V is unstable.
The operation principle of the washing machine drying time control system is as follows:
the humidity sensor is used for detecting the humidity in the barrel when the drying function is started; the comparator is used for comparing the output electric signal of the humidity sensor with a set threshold value; the main control chip is used for detecting the level of the output signal of the comparator and outputting a relay control signal at the same time; the relay is used for controlling the on-off of the electric wire power supply to control the starting and stopping of the drying function.
As shown in fig. 2, the output Vout of the humidity sensor is connected to the positive input terminal of the comparator, the threshold voltage Vref can be determined according to the humidity and voltage relationship in the specification of the humidity sensor, the circuit is realized by dividing the voltage of R1 and R2, and different thresholds can be set by adjusting the resistance relationship between R1 and R2. The threshold voltage is connected to the negative input end of the comparator, and the output end of the comparator is connected to any one general input/output port GPIO1 (the GPIO port is configured as an input port) of the main control chip. As shown in fig. 3, any one general input/output port GPIO2 (the GPIO port is configured as an output port) of the main control chip is connected to a base of the switching transistor to control the on/off of the relay, thereby achieving the purpose of controlling the on/off of the resistance wire power supply and the start/stop of the drying function.
Based on the same inventive concept, the present invention also provides a drying time control method of a washing machine, applied to a washing machine, as shown in fig. 4, the washing machine including a humidity sensor and a heating device, the method including:
detecting the humidity in the tub when the washing machine is in a drying state through a humidity sensor;
judging whether the humidity in the barrel is greater than a humidity threshold value;
and controlling the heating device to be opened or closed according to the judgment result.
In some embodiments of the present application, the controlling the opening and closing of the heating device according to the determination result includes:
when the humidity in the barrel is larger than the humidity threshold value, a heating device is started to heat;
detecting the humidity in the tub of the washing machine;
and when the humidity in the barrel is detected to be less than or equal to a humidity threshold value, the heating device is turned off.
The whole working process is shown in fig. 4, the humidity sensor is installed at a proper position of the inner tub, and the humidity sensor is not operated when the washing machine is used for washing normally. Only when the drying function is started, the humidity sensor can be started, and the humidity condition in the barrel is monitored in real time. The signal of telecommunication Vout and the threshold value Vref of setting for of humidity transducer output pass through the comparator and compare, when Vout > Vref, the comparator output high level, and when master control chip detected GPIO1 port signal and was high this moment, master control chip control GPIO2 port output high level, triode Q1 switches on, and the relay is closed, and the resistance wire work this moment is equivalent to stoving function play this moment. When Vout is not larger than Vref, the comparator outputs a low level, at the moment, when the master control chip detects that the signal of the GPIO1 input port is low, the master control chip controls the GPIO2 port to output the low level, the triode Q1 is not conducted, the relay is disconnected, the resistance wire does not work at the moment, and equivalently, the drying function stops at the moment.
The main control chip can be a device with a control function, such as an MCU, a DSP, an ARM and the like.
The invention also provides a washing machine, which comprises the drying time control system of the washing machine.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented by means of units performing the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A drying time control system of a washing machine is applied to the washing machine, and is characterized by comprising: a humidity sensor, a comparator circuit, a control circuit and a heating device;
the humidity sensor is used for detecting the humidity in the tub when the washing machine is in a drying state;
the input end of the comparator circuit is connected with the output end of the humidity sensor and is used for outputting a level signal according to the humidity in the barrel and the humidity threshold value;
the input end of the control circuit is connected with the output end of the comparator circuit, and the output end of the control circuit is connected with the heating device and used for controlling the heating device according to the level signal output by the comparator circuit;
the control circuit includes: the fourth resistor, the third capacitor, the switching triode and the relay;
the first end of the fourth resistor is connected with the output end of the comparator circuit, and the second end of the fourth resistor is respectively connected with the first end of the third capacitor and the base electrode of the switching triode;
the second end of the third capacitor is grounded;
and an emitter of the switching triode is connected with the second end of the third capacitor, and a collector of the switching triode is connected with the first end of the relay and used for controlling the on-off of the relay.
2. A washing machine drying time control system according to claim 1, wherein the comparator circuit comprises: a first circuit, a voltage divider circuit and a comparator;
the first circuit is connected with a first input end of the comparator;
the voltage division circuit is connected with a second input end of the comparator;
and the output end of the comparator is used for outputting a level signal.
3. The drying time control system of a washing machine as claimed in claim 2, wherein the voltage dividing circuit comprises a first resistor, a second resistor and a second capacitor for adjusting a voltage value of the second input of the comparator;
the first end of the first resistor is connected with a first power supply signal terminal, and the second end of the first resistor is respectively connected with the first end of the second resistor, the first end of the second capacitor and the second input end of the comparator;
the second end of the second resistor is grounded;
and the second end of the second capacitor is connected with the second end of the second resistor.
4. A washing machine drying time control system according to claim 2, wherein the first circuit comprises a third resistor and a first capacitor;
the first end of the third resistor is connected with the output end of the humidity sensor, and the second end of the third resistor is respectively connected with the first end of the first capacitor and the second input end of the comparator;
the second end of the first capacitor is grounded.
5. The washing machine drying time control system according to claim 1, further comprising a voltage dependent resistor, wherein a first end of the voltage dependent resistor is connected with a first end of the relay, and a second end of the voltage dependent resistor is connected with a second end of the relay;
and the second end of the relay is connected with the second power supply signal terminal, the third end of the relay is connected with the third power supply signal terminal, and the fourth end of the relay is connected with the heating device.
6. A drying time control method of a washing machine, applied to the washing machine, is characterized in that the washing machine comprises a humidity sensor and a heating device, and the method comprises the following steps:
detecting the humidity in the tub when the washing machine is in a drying state through a humidity sensor;
judging whether the humidity in the barrel is greater than a humidity threshold value;
controlling the heating device to be opened or closed according to the judgment result;
the judgement whether the humidity in the bucket is greater than the humidity threshold value, according to the judged result control heating device's switching includes:
the electric signal of exporting the humidity transducer and humidity threshold value pass through the comparator circuit to be compared, work as the electric signal is greater than during the humidity threshold value, the comparator circuit exports the high level, and control circuit detects the high level of comparator circuit output, and the control switch triode switches on to control relay closure makes heating device heat, works as the electric signal is not more than during the humidity threshold value, the comparator circuit exports the low level, and control circuit detects the low level of comparator circuit output, and the control switch triode does not switch on, and control relay disconnection makes heating device not heat.
7. A washing machine characterized by comprising the washing machine drying time control system as claimed in any one of claims 1 to 5.
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| CN201811377529.XA CN109338692B (en) | 2018-11-19 | 2018-11-19 | Washing machine drying time control system and method and washing machine |
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| CN201811377529.XA CN109338692B (en) | 2018-11-19 | 2018-11-19 | Washing machine drying time control system and method and washing machine |
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| CN111663292A (en) * | 2019-03-05 | 2020-09-15 | 青岛海尔洗衣机有限公司 | Control method of clothes treatment equipment and clothes treatment equipment |
| CN110565349B (en) * | 2019-08-13 | 2021-07-09 | 广东格兰仕集团有限公司 | Partition drying control method for electric appliance with drying function |
| CN112415060B (en) * | 2020-12-08 | 2024-08-27 | 海腾创建(深圳)集团有限公司 | Moisture content detection method, moisture content detection apparatus, and storage medium |
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