CN111809345B - Control system of washing machine and washing machine - Google Patents
Control system of washing machine and washing machine Download PDFInfo
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- CN111809345B CN111809345B CN201910225158.1A CN201910225158A CN111809345B CN 111809345 B CN111809345 B CN 111809345B CN 201910225158 A CN201910225158 A CN 201910225158A CN 111809345 B CN111809345 B CN 111809345B
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- state
- door lock
- resistor
- washing machine
- control system
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
Abstract
The invention provides a control system of a washing machine and the washing machine, the control system comprises: the detection module is used for detecting the state of the door lock, outputting a first control signal when the state of the door lock is a locked state, and outputting a second control signal when the state of the door lock is an unlocked state; and the control module is used for controlling the normal operation of the clothes dryer in the washing machine when receiving the first control signal and controlling the clothes dryer to stop working when receiving the second control signal. According to the control system of the washing machine and the washing machine, when the door lock is in the unlocking state, the control module can control the whole clothes dryer to stop working, software misoperation in the unlocking state of the door lock can be prevented, and fire hazard is avoided.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a control system of a washing machine and the washing machine.
Background
A double-drum compound washing and drying integrated machine is a washing and drying device combining a drum washing machine and a drum drying machine. The clothes dryer heats and dries clothes, the high-temperature heating device is arranged in the clothes dryer, and if no protection is provided in design, the heating device can continuously work to heat the clothes, so that fire hazards exist.
In the related art, the clothes dryer is usually controlled to work through a door lock and software, the door lock controls the work of a load (various electric devices of the clothes dryer, such as a compressor, a motor and the like), for example, the door lock is in a locked state, the load can be operated, the door lock is in an unlocked state, and the load cannot be operated; and the software controls the clothes dryer to work according to the operation of a user. Under this scheme, the lock can only control whether the load can work, and software can work at any time, when the lock control became invalid, because reasons such as software maloperation, the fire hidden danger that clothing overheated etc. lead to still exists.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first objective of the present invention is to provide a control system for a washing machine, wherein when the door lock is in an unlocked state, the control module can control the whole drying machine to stop working, so as to prevent software misoperation when the door lock is in the unlocked state and avoid fire hazard.
A second object of the present invention is to provide a washing machine.
To achieve the above object, a first embodiment of the present invention provides a control system for a washing machine, including:
the detection module is used for detecting the state of a door lock, outputting a first control signal when the state of the door lock is a locked state, and outputting a second control signal when the state of the door lock is an unlocked state;
and the control module is used for controlling the normal operation of the clothes dryer in the washing machine when receiving the first control signal and controlling the clothes dryer to stop working when receiving the second control signal.
According to the control system of the washing machine provided by the embodiment of the invention, the detection module is used for detecting the state of the door lock, outputting a first control signal when the state of the door lock is a locked state, and outputting a second control signal when the state of the door lock is an unlocked state; the control module is used for controlling the normal operation of the clothes dryer in the washing machine when receiving the first control signal and controlling the clothes dryer to stop working when receiving the second control signal. When the state of the door lock is an unlocking state, the control module can control the whole clothes dryer to stop working, so that software misoperation in the unlocking state of the door lock can be prevented, and fire hazard is avoided.
According to one embodiment of the invention, the detection module comprises: a first power supply for providing a first direct current signal; a first end of the pull-up resistor is connected with the first power supply, and a second end of the pull-up resistor is connected with the control module; and the switch unit is used for detecting the state of the door lock, switching on the electric connection between the second end of the pull-up resistor and the ground when the state of the door lock is a locked state, and switching off the electric connection between the second end of the pull-up resistor and the ground when the state of the door lock is an unlocked state.
According to one embodiment of the present invention, the switching unit includes: a first input terminal for connection with a live wire; the second input end is used for being connected with a zero line when the state of the door lock is a locking state and disconnecting the connection with the zero line when the state of the door lock is an unlocking state; the first pole of the input end of the optical coupler is connected with the first input end, the second pole of the input end of the optical coupler is connected with the second input end, the first pole of the output end of the optical coupler is connected with the second end of the pull-up resistor, the second pole of the output end of the optical coupler is connected with the ground and used for being switched on when the second input end is connected with a zero line and being switched off when the second input end is disconnected from the zero line.
According to an embodiment of the invention, the switching unit further comprises: and the anode of the voltage stabilizing diode is connected with the second input end, and the cathode of the voltage stabilizing diode is connected with the first input end.
According to an embodiment of the invention, the switching unit further comprises: the first resistor is connected with the voltage stabilizing diode in parallel.
According to an embodiment of the invention, the switching unit further comprises: and the cathode of the voltage stabilizing diode is connected with the first input end through the current limiting resistor.
According to one embodiment of the present invention, the current limiting resistor is plural.
According to an embodiment of the invention, the detection module further comprises: and the first end of the capacitor is connected with the ground, and the second end of the capacitor is connected with the control module.
According to an embodiment of the invention, the detection module further comprises: and the second end of the pull-up resistor is connected with the control module through the second resistor.
In order to achieve the above object, a second embodiment of the present invention provides a washing machine, including: a control system for a washing machine according to an embodiment of the first aspect of the present invention.
Drawings
Fig. 1 is a block diagram of a control system of a washing machine according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a control system of a washing machine according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of an application scenario of a control system of a washing machine according to an embodiment of the present invention;
fig. 4 is a structural view of a washing machine according to one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The control system of the washing machine and the washing machine according to the embodiment of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a block diagram of a control system of a washing machine according to an embodiment of the present invention, as shown in fig. 1, the control system including:
the detection module 11 is used for detecting the state of the door lock, outputting a first control signal when the state of the door lock is a locked state, and outputting a second control signal when the state of the door lock is an unlocked state;
and the control module 12 is used for controlling the normal operation of the clothes dryer in the washing machine when receiving the first control signal and controlling the clothes dryer to stop working when receiving the second control signal.
In the embodiment of the invention, the detection module 11 detects the state of the door lock, and outputs a first control signal to the control module 12 when the state of the door lock is a locked state; when the state of the door lock is the unlocked state, a second control signal is output to the control module 12. The control module 12 controls the dryer in the washing machine to normally operate when receiving the first control signal, and controls the dryer to stop operating when receiving the second control signal.
According to the control system of the washing machine provided by the embodiment of the invention, the detection module is used for detecting the state of the door lock, outputting a first control signal when the state of the door lock is a locked state, and outputting a second control signal when the state of the door lock is an unlocked state; the control module is used for controlling the normal operation of the clothes dryer in the washing machine when receiving the first control signal and controlling the clothes dryer to stop working when receiving the second control signal. When the state of the door lock is an unlocking state, the control module can control the whole clothes dryer to stop working, so that software misoperation in the unlocking state of the door lock can be prevented, and fire hazard is avoided.
Fig. 2 is a circuit diagram of a control system of a washing machine according to an embodiment of the present invention, and as shown in fig. 2, the detection module 11 may include:
a first power supply Pro-5V for providing a first direct current signal;
a first end of the pull-up resistor R140 is connected with the first power Pro-5V, and a second end of the pull-up resistor R140 is connected with the control module 12;
and a switch unit 23 for detecting the state of the door lock, and turning on the electrical connection between the second terminal of the pull-up resistor R140 and the ground Pro-GND when the state of the door lock is the locked state, and turning off the electrical connection between the second terminal of the pull-up resistor R140 and the ground Pro-GND when the state of the door lock is the unlocked state.
Further, as shown in fig. 2, the switch unit 23 may specifically include:
a first input 21 for connection to a live line L;
and a second input terminal 22, configured to connect to the neutral line N when the door lock is in the locked state, and disconnect from the neutral line N when the door lock is in the unlocked state.
In an embodiment of the present invention, the second input terminal 22 may be specifically a socket CN16 as shown in fig. 3, when the door lock state is the locked state, CN16 and the load line are both connected to the neutral line N; when the door lock state is the unlocking state, CN16 and the load line are disconnected with the zero line N.
The optical coupler U7, the first utmost point of the input end of opto-coupler U7 is connected with first input 21, the second pole of the input end of opto-coupler U7 is connected with second input 22, the first utmost point of the output end of opto-coupler U7 is connected with the second end of pull-up resistance R140, the second pole of the output end of opto-coupler U7 is connected with ground Pro-GND for switch on when the second input 22 is connected with zero line N, and the disconnection is carried out when the second input 22 is disconnected with zero line N.
In the embodiment of the present invention, the optical coupler U7 may avoid the interference of the electrical signal between the input end and the output end of the detection module 11. As a possible implementation, the optocoupler U7 may specifically be a PC817 optocoupler.
Further, as shown in fig. 2, the switch unit 23 may further include:
the anode of the zener diode DZ3, the zener diode DZ3 is connected to the second input terminal 22, and the cathode of the zener diode DZ3 is connected to the first input terminal 21.
Further, as shown in fig. 2, the switch unit 23 may further include:
and the first resistor R134, the first resistor R134 and the voltage stabilizing diode DZ3 are connected in parallel.
Further, as shown in fig. 2, the switch unit 23 may further include:
the current limiting resistor, the cathode of zener diode DZ3 is connected to first input terminal 21 through a current limiting resistor.
In the embodiment of the present invention, the current limiting resistor may be a plurality of current limiting resistors, such as two current limiting resistors R132 and R133 shown in fig. 2. The plurality of current-limiting resistors are arranged, so that current can be sufficiently limited when the large-resistance resistor is difficult to obtain, and meanwhile, compared with a single large-resistance resistor, the plurality of current-limiting resistors are large in heat dissipation area and good in heat dissipation effect.
Further, as shown in fig. 2, the detection module 11 may further include:
and a first end of the capacitor C114 is connected with the ground Pro-GND, and a second end of the capacitor C114 is connected with the control module 12.
A second end of the second resistor R141 and the pull-up resistor R140 is connected to the control module 12 through the second resistor R141.
The working principle of the control system of the embodiment of the invention is as follows:
(1) when the door lock is in a locking state, the second input end 22 is connected with the zero line N, the loop between the first input end 21 and the second input end 22 is conducted, the optical coupler U7 is conducted, so that the second end of the pull-up resistor R140 is communicated with the ground Pro-GND, the second end of the second resistor R141 outputs a first control signal (low level) to the control module 12, and the control module 12 controls the dryer in the washing machine to normally operate.
(2) When the state of the door lock is the unlocking state, the second input end 22 is disconnected from the zero line N, the loop between the first input end 21 and the second input end 22 is disconnected, the optical coupler U7 is disconnected, so that the second end of the pull-up resistor R140 is disconnected from the ground Pro-GND, the second end of the second resistor R141 outputs a second control signal (high level) to the control module 12, and the control module 12 controls the clothes dryer in the washing machine to stop running.
The control system of the embodiment of the invention can be applied to a computer logic control panel in the washing machine, such as a main control panel, a program panel and the like, thereby realizing the control of software from a hardware level and providing further protection for the washing machine.
According to the control system of the washing machine provided by the embodiment of the invention, the detection module is used for detecting the state of the door lock, outputting a first control signal when the state of the door lock is a locked state, and outputting a second control signal when the state of the door lock is an unlocked state; the control module is used for controlling the normal operation of the clothes dryer in the washing machine when receiving the first control signal and controlling the clothes dryer to stop working when receiving the second control signal. When the state of the door lock is an unlocking state, the control module can control the whole clothes dryer to stop working, so that software misoperation in the unlocking state of the door lock can be prevented, and fire hazard is avoided.
In order to implement the above embodiment, the embodiment of the present invention further provides a washing machine 30, including: the control system 31 of the washing machine as shown in the above embodiment.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A control system of a washing machine, comprising:
the detection module is used for detecting the state of a door lock, outputting a first control signal when the state of the door lock is a locked state, and outputting a second control signal when the state of the door lock is an unlocked state;
a control module for controlling the normal operation of the clothes dryer in the washing machine when receiving the first control signal and controlling the clothes dryer to stop working when receiving the second control signal
The detection module comprises:
a first power supply for providing a first direct current signal;
a first end of the pull-up resistor is connected with the first power supply, and a second end of the pull-up resistor is connected with the control module;
the switch unit is used for detecting the state of the door lock, and when the state of the door lock is a locking state, the switch unit is used for connecting the second end of the pull-up resistor with the ground, and when the state of the door lock is an unlocking state, the switch unit is used for disconnecting the second end of the pull-up resistor from the ground;
the switching unit includes:
a first input terminal for connection with a live wire;
the second input end is used for being connected with a zero line when the state of the door lock is a locking state and disconnecting the connection with the zero line when the state of the door lock is an unlocking state;
the first pole of the input end of the optical coupler is connected with the first input end, the second pole of the input end of the optical coupler is connected with the second input end, the first pole of the output end of the optical coupler is connected with the second end of the pull-up resistor, the second pole of the output end of the optical coupler is connected with the ground and used for being switched on when the second input end is connected with a zero line and being switched off when the second input end is disconnected from the zero line.
2. The control system of claim 1, wherein the switch unit further comprises:
and the anode of the voltage stabilizing diode is connected with the second input end, and the cathode of the voltage stabilizing diode is connected with the first input end.
3. The control system of claim 2, wherein the switch unit further comprises:
the first resistor is connected with the voltage stabilizing diode in parallel.
4. The control system of claim 2, wherein the switch unit further comprises:
and the cathode of the voltage stabilizing diode is connected with the first input end through the current limiting resistor.
5. The control system of claim 4, wherein the current limiting resistor is a plurality of resistors.
6. The control system of claim 1, wherein the detection module further comprises:
and the first end of the capacitor is connected with the ground, and the second end of the capacitor is connected with the control module.
7. The control system of claim 1, wherein the detection module further comprises:
and the second end of the pull-up resistor is connected with the control module through the second resistor.
8. A washing machine, characterized by comprising: a control system for a laundry machine as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225158.1A CN111809345B (en) | 2019-03-25 | 2019-03-25 | Control system of washing machine and washing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225158.1A CN111809345B (en) | 2019-03-25 | 2019-03-25 | Control system of washing machine and washing machine |
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| Publication Number | Publication Date |
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| CN111809345A CN111809345A (en) | 2020-10-23 |
| CN111809345B true CN111809345B (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910225158.1A Active CN111809345B (en) | 2019-03-25 | 2019-03-25 | Control system of washing machine and washing machine |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204959421U (en) * | 2015-06-30 | 2016-01-13 | 无锡小天鹅股份有限公司 | A dryer that is used for lock subassembly of dryer and has it |
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- 2019-03-25 CN CN201910225158.1A patent/CN111809345B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204959421U (en) * | 2015-06-30 | 2016-01-13 | 无锡小天鹅股份有限公司 | A dryer that is used for lock subassembly of dryer and has it |
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| CN111809345A (en) | 2020-10-23 |
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