CN115480093A - Zero-crossing detection circuit, control method and control device - Google Patents
Zero-crossing detection circuit, control method and control device Download PDFInfo
- Publication number
- CN115480093A CN115480093A CN202211245992.5A CN202211245992A CN115480093A CN 115480093 A CN115480093 A CN 115480093A CN 202211245992 A CN202211245992 A CN 202211245992A CN 115480093 A CN115480093 A CN 115480093A
- Authority
- CN
- China
- Prior art keywords
- zero
- triode
- crossing detection
- detection circuit
- coupler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
Abstract
According to the zero-crossing detection circuit, the control method and the control device, zero-crossing detection of the alternating current sine wave of the alternating current power supply can be achieved by arranging the zero-crossing detection circuit, and arcing or sparks can be reduced by controlling the relay to perform switching when the zero-crossing point is detected, so that the use safety of an electric appliance product can be guaranteed, and the service life of the electric appliance can be prolonged.
Description
Technical Field
The present disclosure relates to the field of control technologies, and in particular, to a zero-crossing detection circuit, a control method, and a control device.
Background
When some electric appliances (such as a steaming oven) are used, the relay is often accompanied with the switching action of the relay, the relay is connected with an alternating current power supply, the alternating current power supply is strong electricity, and when the relay is in action, fire arcs or sparks can be generated, so that the safe use and the service life of the electric appliances are influenced.
Disclosure of Invention
In order to solve the problems, the application provides a zero-crossing detection circuit, a control method and a control device, which can ensure the use safety of the whole electric appliance and prolong the service life of the electric appliance.
The application provides a zero cross detection circuit, includes: first triode, second triode, first opto-coupler and second opto-coupler, the base of first triode is used for receiving control signal, the collecting electrode ground connection of first triode, the projecting pole of first triode with the emitting diode's of first opto-coupler negative pole is connected, the emitting diode's of first opto-coupler positive pole connects the chip power, the bidirectional thyristor's of first opto-coupler first end is used for connecting alternating current power supply's live wire, the second end of the bidirectional thyristor of first opto-coupler is connected with the emitting diode's of second opto-coupler positive pole, the emitting diode's of second opto-coupler negative pole is used for connecing alternating current power supply's zero line, the photoelectric triode's of second opto-coupler collecting electrode with chip power, zero cross detection interface with the collecting electrode of second triode is connected, the photoelectric triode's of second opto-coupler collecting electrode connects the base of second triode, the projecting pole ground connection of second triode.
In some embodiments, the zero crossing detection circuit further comprises: and the anode of the diode is connected with a zero line of the alternating current power supply, and the cathode of the diode is connected with the anode of the light-emitting diode of the second optocoupler.
In some embodiments, the zero crossing detection circuit further comprises: the zero line is connected with the cathode of a light emitting diode of the second optical coupler through the second resistor, and the live wire is connected with the first end of the bidirectional thyristor of the first optical coupler through the first resistor.
In some embodiments, the zero crossing detection circuit further comprises: the negative electrode of the light emitting diode of the first optocoupler is connected with the emitting electrode of the first triode through the third resistor, and the emitting electrode of the photoelectric triode of the second optocoupler is connected with the collector electrode of the second triode through the fourth resistor.
In some embodiments, the zero crossing detection circuit further comprises: the control signal is transmitted to the base electrode of the first triode through the sixth resistor, and the collector electrode of the photoelectric triode of the second optocoupler is connected with the base electrode of the second triode through the fifth resistor.
The embodiment of the application provides a control method, which is applied to the zero-crossing detection circuit, and the method comprises the following steps:
under the condition that the relay of the electric appliance needs to be controlled to execute the switching action, outputting a high-level control signal with preset time length to the zero-crossing detection circuit, wherein the preset time length corresponds to at least one sine wave period of the alternating current;
acquiring a check signal of the zero-crossing detection interface;
and controlling the relay to perform a switching action in the case that the check signal indicates a transition from a low level to a high level.
In some embodiments, the method further comprises:
and under the condition that the relay does not need to be controlled to perform the switching action, continuously outputting a control signal of a low-level signal to the zero-crossing detection circuit.
The embodiment of the present application provides a control device, which is applied to the zero-cross detection circuit, and includes:
the output module is used for outputting a high-level control signal with preset time length to the zero-crossing detection circuit under the condition that the relay of the electric appliance is determined to be controlled to execute the switching action, wherein the preset time length corresponds to at least one alternating current sine wave period;
the acquisition module is used for acquiring the check signal of the zero-crossing detection interface;
and the control module is used for controlling the relay to execute switching action under the condition that the level of the zero-crossing detection interface represented by the check signal is changed from low level to high level.
An embodiment of the present application provides an electronic device, which includes a memory and a processor, where the memory stores a computer program, and the computer program, when executed by the processor, executes the control method described above.
An embodiment of the present application provides a control system, including: the electronic device and the zero-crossing detection circuit are characterized in that the output end of the electronic device is connected with the base electrode of the first triode, the input end of the electronic device is connected with the zero-crossing detection interface, and the electronic device is connected with a relay of an electric appliance.
An embodiment of the present application provides an electrical appliance, including: the control system described above.
In some embodiments, the appliance includes: and (5) steaming the oven.
The embodiment of the present application provides a computer-readable storage medium, which stores a computer program that can be executed by one or more processors and can be used to implement any one of the above control methods.
According to the zero-crossing detection circuit, the control method and the control device, zero-crossing detection of the alternating current sine wave of the alternating current power supply can be achieved by arranging the zero-crossing detection circuit, and arcing or sparks can be reduced by controlling the relay to perform switching when the zero-crossing point is detected, so that the use safety of an electric appliance (such as a steam oven) product can be ensured, and the service life of the electric appliance can be prolonged.
Drawings
The present application will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a zero-crossing detection circuit according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a timing control according to an embodiment of the present disclosure;
fig. 3 is a schematic flow chart illustrating an implementation of a control method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
In the drawings, like parts are designated with like reference numerals, and the drawings are not drawn to scale.
Detailed Description
In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the attached drawings, the described embodiments should not be considered as limiting the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.
The following description will be added if similar descriptions of "first \ second \ third" appear in the application file, and the terms "first \ second \ third" referred to in the following description are merely used for distinguishing similar objects and do not represent a specific ordering for the objects, it should be understood that "first \ second \ third" may be interchanged under the permission of a specific order or sequence, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described herein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.
The first embodiment is as follows:
the embodiment of the present application provides a zero-crossing detection circuit, and fig. 1 is a schematic structural diagram of the zero-crossing detection circuit provided in the embodiment of the present application, where the zero-crossing detection circuit includes: first triode Q1, second triode Q2, first opto-coupler U1 and second opto-coupler U2, first triode Q1's base is used for receiving CONTROL signal POWER _ CONTROL, first triode Q1's collecting electrode ground connection, first triode Q1's projecting pole with emitting diode's of first opto-coupler U1 negative pole 4 is connected, emitting diode's of first opto-coupler U1 positive pole 3 connects chip POWER VCC, first opto-coupler U1's triac's first end 1 is used for connecting alternating current POWER supply's live wire L _ ZERO, the second end 2 of the triac of first opto-coupler U1 is connected with emitting diode's of second opto-coupler U2 positive pole 5, emitting diode's of second opto-coupler U2 negative pole 6 is used for connecing alternating current POWER supply's ZERO line N _ ZERO, the projecting pole 7 of the phototriode of second opto-coupler U2 with chip POWER VCC, ZERO cross detection interface ZERO _ CHK and second triode Q2's collecting electrode are connected, the second opto-coupler U2's collecting electrode photoelectric detection interface ZERO is connected the second triode Q2 collecting electrode base electrode ground connection.
In this embodiment, the first transistor and the second transistor are both NPN transistors.
In the embodiment of the application, the first end of the bidirectional triode thyristor comprises a cathode or an anode of the bidirectional triode thyristor, and the second end of the bidirectional triode thyristor comprises an anode or a cathode of the bidirectional triode thyristor.
In the embodiment of the present application, the control signal may be a high-level control signal and a low-level control signal. In the embodiment of the application, the zero-crossing detection interface may be connected to the electronic device to obtain the level condition of the zero-crossing detection interface.
In the embodiment of the present application, the chip power supply may be, for example, a 3.3v power supply or a 5v power supply, and the chip power supply is a direct current weak current. The alternating current power supply can be a 220V power supply or a 100V power supply, and the alternating current power supply is strong alternating current.
In the embodiment of the application, the level of ZERO _ CHECK is changed from low level to high level, and the rising edge triggers, which can be determined as a ZERO crossing point.
The zero-crossing detection circuit provided by the embodiment of the application can realize zero-crossing detection of the alternating current power supply by arranging the zero-crossing detection circuit, and the zero-crossing detection circuit comprises: 2 triode and 2 opto-couplers to through the connected mode that sets for, can realize confirming the zero crossing of alternating current power supply in a cycle.
In some embodiments, with continued reference to fig. 1, the zero-crossing detection circuit further comprises: and the anode of the diode D1 is connected with a zero line of the alternating current power supply, and the cathode of the diode D1 is connected with the anode of a light-emitting diode of the second optocoupler U2.
In the embodiment of this application, through diode D1 anodal with alternating current power supply's zero line is connected, diode D1's negative pole with when alternating current zero line N becomes forward voltage, prevent to damage to opto-coupler U2's breakdown by the effect that can D1 is connected to second opto-coupler U2's emitting diode's positive pole.
In some embodiments, with continued reference to fig. 1, the zero-crossing detection circuit further comprises: first resistance R1, second resistance R2, wherein, the zero line passes through second resistance R2 is connected with second opto-coupler U2's emitting diode's negative pole, the live wire pass through first resistance R1 with the first end of first opto-coupler U1's bidirectional thyristor is connected.
In some embodiments, the zero crossing detection circuit further comprises: third resistance R3, fourth resistance R4, wherein, the negative pole of the emitting diode of first opto-coupler U1 passes through third resistance R3 is connected with first triode Q1's projecting pole, the collecting electrode of second triode Q2 is connected through fourth resistance R4 to the projecting pole of the phototriode of second opto-coupler U2.
In some embodiments, the zero crossing detection circuit further comprises: the control signal passes through the sixth resistor R6 transmits the base of the first triode, and the collector of the photoelectric triode of the second optocoupler U2 is connected with the base of the second triode through the fifth resistor R5.
In the embodiment of the application, the current/voltage in the circuit can be filtered by carrying out each circuit, and the voltage division function can be carried out.
In the embodiment of the application, ZERO _ CHECK is changed from low level to high level at the ZERO crossing point, and the rising edge triggers.
The following is an implementation principle of zero-crossing detection provided by the embodiment of the present application:
fig. 2 is a schematic diagram of a timing CONTROL provided by the embodiment of the application, as shown in fig. 2, when POWER _ CONTROL outputs a high level, the transistor Q1 is turned on, VCC and ground form a loop, the optocoupler U1 is turned on, at this time, L-ZERO and N-ZERO are connected to an alternating current, the optocoupler U2 is turned on, the transistor Q2 is turned on, ZERO _ CHECK is a low level signal, and an alternating current sine wave does not reach ZERO.
When POWER _ CONTROL outputs low level, the triode Q1 is cut off, the optocoupler U1 is cut off, the L-ZERO and the N-ZERO are disconnected, the optocoupler U2 is cut off, the triode Q2 is cut off, ZERO _ CHECK is a high level signal, and alternating current sine wave does not reach ZERO.
In the time of the negative half shaft T2 of the alternating current sine wave, if POWER _ CONTROL outputs low level, the triode Q1 is cut off, the optocoupler U1 is turned off, the circuit is broken between L-ZERO and N-ZERO, the optocoupler U2 is turned off, the triode Q2 is cut off, and ZERO _ CHECK is continuously at high level; the ac sine wave does not reach zero.
If POWER _ CONTROL outputs high level, the triode Q1 is conducted, the optocoupler U1 is started, but the current direction is N-ZERO and flows to L-ZERO, the optocoupler U2 is turned off, the triode Q2 is cut off, ZERO _ CHECK continuously is high level, and the alternating current sine wave does not reach ZERO point.
When the alternating current sine wave reaches ZERO points S1, S2, S3 and S4.
Only one zero-crossing can be detected during one period time T of the sine wave function of the alternating current.
Based on the principle of the zero-crossing detection circuit, the embodiment of the present application provides a control method, where the control method is applied to the zero-crossing detection circuit, and the control method is applied to an electronic device, where the electronic device may be a computer, a mobile terminal, a server, and the like, the electronic device may be a chip, the chip may be mounted on an electrical appliance, and the electrical appliance may be a steam oven. The functions realized by the control method provided by the embodiment of the application can be realized by calling a program code by a processor of the electronic equipment, wherein the program code can be stored in a computer storage medium. Fig. 3 is a schematic flow chart of an implementation process of a control method provided in an embodiment of the present application, and as shown in fig. 3, the method includes:
step S101, under the condition that the relay of the electric appliance needs to be controlled to execute the switching action, outputting a high-level control signal with preset time length to the zero-crossing detection circuit, wherein the preset time length corresponds to at least one sine wave period of the alternating current.
In the embodiment of the application, the electronic device can acquire the target signal of the electric appliance to determine whether the relay needs to be controlled to execute the switching action, and if the target signal of the electric appliance is acquired, the relay needs to be controlled to execute the switching action. And if the target signal is not acquired, determining that the relay does not need to be controlled to execute the switching action. In the embodiment of the application, the electric appliance can be a household electric appliance such as an oven.
In the embodiment of the present application, the relay performs the switching action including: the relay is turned on and the relay is turned off.
In the embodiment of the present application, the preset time duration may be configured, for example, the preset time duration may be 3 periods of a sine wave of alternating current, that is, one period of the sine wave is represented by T, and the preset time duration may be 3T.
And step S102, acquiring a check signal of the zero-crossing detection interface.
In this embodiment, an input end of the electronic device may be connected to the zero-crossing detection interface, and is configured to obtain the check signal of the zero-crossing detection interface.
In this embodiment of the application, the detecting signal may include: the level of the zero-crossing detection interface is low level, the level of the zero-crossing detection interface is high level, and the level of the zero-crossing detection interface is changed from low level to high level.
And S103, controlling the relay to execute switching action under the condition that the check signal represents that the level of the zero-crossing detection interface is changed from low level to high level.
In the embodiment of the application, when the detection signal representation is changed from the low level of the zero-crossing detection interface to the high level, the sine wave of the alternating current reaches zero. The relay can be controlled to perform switching action at the moment, and arcing or sparks can be reduced, so that the use safety of electric products can be guaranteed, and the service life of electric appliances can be prolonged.
In some embodiments, the method further comprises:
and under the condition that the relay does not need to be controlled to perform the switching action, continuously outputting a control signal of a low-level signal to the zero-crossing detection circuit.
In the embodiment of the application, if the electronic device does not receive the target signal of the electric appliance, it is determined that the relay does not need to be controlled to perform the switching action, and the zero crossing point does not need to be detected because the relay does not need to be controlled to perform the switching action, so that the control signal of the low-level signal is continuously output to the zero crossing detection circuit.
In the embodiment of the application, the zero-crossing detection circuit is in the open circuit state by continuously outputting the low level, and the electric energy is not consumed, so that the requirements of high efficiency and low power consumption are met.
According to the control method provided by the embodiment of the application, the switch of the relay is controlled by detecting the zero crossing point of the sine wave of the alternating current, so that electric sparks or fire arcs generated by the action of the relay under strong current can be avoided, the safety and the service life of an electric appliance are ensured, meanwhile, the electric energy consumption of the zero crossing detection circuit is reduced by controlling the turn-off of the optocoupler, and low power consumption is realized.
Example two
Based on the foregoing embodiments, the present application provides a control apparatus, where each module included in the apparatus and each unit included in each module may be implemented by a processor in a computer device; of course, the implementation can also be realized through a specific logic circuit; in the implementation process, the processor may be a Central Processing Unit (CPU), a Microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
An embodiment of the present application provides a control device, and the control device includes:
the output module is used for outputting a high-level control signal with preset time length to the zero-crossing detection circuit under the condition that the relay of the electric appliance is determined to be required to be controlled to execute the switching action, wherein the preset time length corresponds to at least one alternating current sine wave period;
the acquisition module is used for acquiring the check signal of the zero-crossing detection interface;
and the control module is used for controlling the relay to execute switching action under the condition that the level of the zero-crossing detection interface represented by the check signal is changed from low level to high level.
In some embodiments, the control device is further configured to: and under the condition that the relay does not need to be controlled to perform the switching action, continuously outputting a control signal of a low-level signal to the zero-crossing detection circuit.
It should be noted that, in the embodiment of the present application, if the deployment method of the cluster and the processing method of the cluster are implemented in the form of software functional modules, and are sold or used as independent products, they may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application or portions thereof that contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.
Accordingly, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, wherein the computer program is implemented to implement the steps in the control method provided in the above embodiment when executed by a processor.
EXAMPLE III
The embodiment of the application provides an electronic device; fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and as shown in fig. 4, the electronic device 700 includes: a processor 701, at least one communication bus 702, a user interface 703, at least one external communication interface 704, a memory 705. Wherein the communication bus 702 is configured to enable connective communication between these components. The user interface 703 may include a display screen, and the external communication interface 704 may include standard wired and wireless interfaces, among others. The processor 701 is configured to execute the program of the deployment method of the cluster stored in the memory to implement the steps in the control method provided in the above embodiment.
The above description of the electronic device and storage medium embodiments, similar to the description of the method embodiments above, have similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the electronic device and the storage medium of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.
Based on the foregoing electronic devices, an embodiment of the present application provides a control system, where the control system includes: the electronic device and the zero-crossing detection circuit are provided. The output end of the electronic equipment is connected with the base electrode of the first triode, the input end of the electronic equipment is connected with the zero-crossing detection interface, and the electronic equipment is connected with a relay of an electric appliance.
The embodiment of the application provides an electric appliance, and the electric appliance comprises the control system.
In the embodiment of the present application, the electric appliance may be an oven.
Here, it should be noted that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, 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 a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated units described above in the present application may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a controller to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall cover the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (13)
1. A zero-crossing detection circuit, comprising: first triode, second triode, first opto-coupler and second opto-coupler, the base of first triode is used for receiving control signal, the collecting electrode ground connection of first triode, the projecting pole of first triode with the emitting diode's of first opto-coupler negative pole is connected, the emitting diode's of first opto-coupler positive pole connects the chip power, the bidirectional thyristor's of first opto-coupler first end is used for connecting alternating current power's live wire, the second end of the bidirectional thyristor of first opto-coupler is connected with the emitting diode's of second opto-coupler positive pole, the emitting diode's of second opto-coupler negative pole is used for connecing alternating current power's zero line, the projecting pole of the photoelectric triode of second opto-coupler with chip power, zero cross detection interface with the collecting electrode of second triode is connected, the collecting electrode of the photoelectric triode of second opto-coupler connects the base of second triode, the projecting pole ground connection of second triode.
2. A zero-crossing detection circuit as claimed in claim 1, further comprising: and the anode of the diode is connected with a zero line of the alternating current power supply, and the cathode of the diode is connected with the anode of the light-emitting diode of the second optocoupler.
3. A zero-crossing detection circuit as claimed in claim 1, further comprising: the zero line is connected with the cathode of a light emitting diode of the second optical coupler through the second resistor, and the live wire is connected with the first end of the bidirectional thyristor of the first optical coupler through the first resistor.
4. A zero-crossing detection circuit as claimed in claim 1, further comprising: the negative electrode of the light emitting diode of the first optocoupler is connected with the emitting electrode of the first triode through the third resistor, and the emitting electrode of the photoelectric triode of the second optocoupler is connected with the collector electrode of the second triode through the fourth resistor.
5. A zero-crossing detection circuit as claimed in claim 1, further comprising: the control signal is transmitted to the base electrode of the first triode through the sixth resistor, and the collector electrode of the photoelectric triode of the second optocoupler is connected with the base electrode of the second triode through the fifth resistor.
6. A control method applied to the zero-cross detection circuit according to any one of claims 1 to 5, the method comprising:
under the condition that the relay of the electric appliance needs to be controlled to execute the switching action, outputting a high-level control signal with preset time length to the zero-crossing detection circuit, wherein the preset time length corresponds to at least one sine wave period of the alternating current;
acquiring a check signal of the zero-crossing detection interface;
and controlling the relay to perform a switching action in the case that the check signal indicates a transition from a low level to a high level.
7. The control method according to claim 6, characterized in that the method further comprises:
and under the condition that the relay does not need to be controlled to perform the switching action, continuously outputting a control signal of a low-level signal to the zero-crossing detection circuit.
8. A control device applied to the zero-cross detection circuit according to any one of claims 1 to 5, comprising:
the output module is used for outputting a high-level control signal with preset time length to the zero-crossing detection circuit under the condition that the relay of the electric appliance is determined to be required to be controlled to execute the switching action, wherein the preset time length corresponds to at least one alternating current sine wave period;
the acquisition module is used for acquiring the check signal of the zero-crossing detection interface;
and the control module is used for controlling the relay to execute switching action under the condition that the level of the zero-crossing detection interface represented by the check signal is changed from low level to high level.
9. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program which, when executed by the processor, performs the control method of any one of claims 6 to 7.
10. A control system, comprising: a zero-crossing detection circuit as claimed in any one of claims 1 to 5 and an electronic device as claimed in claim 9, wherein the output of the electronic device is connected to the base of the first transistor, the input of the electronic device is connected to the zero-crossing detection interface, and the electronic device is connected to a relay of an electrical appliance.
11. An electrical appliance, comprising: the control system of claim 10.
12. The electric appliance according to claim 11, characterized in that it comprises: and (5) steaming the oven.
13. A storage medium storing a computer program executable by one or more processors and operable to implement a control method according to any one of claims 6 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211245992.5A CN115480093A (en) | 2022-10-12 | 2022-10-12 | Zero-crossing detection circuit, control method and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211245992.5A CN115480093A (en) | 2022-10-12 | 2022-10-12 | Zero-crossing detection circuit, control method and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115480093A true CN115480093A (en) | 2022-12-16 |
Family
ID=84396411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211245992.5A Pending CN115480093A (en) | 2022-10-12 | 2022-10-12 | Zero-crossing detection circuit, control method and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115480093A (en) |
-
2022
- 2022-10-12 CN CN202211245992.5A patent/CN115480093A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210129991U (en) | Control device | |
| WO2021000436A1 (en) | Wireless control module, wireless wall switch, powered device, and system | |
| CN101867293B (en) | Batch type current consuming quasi-zero power consumption standby control circuit | |
| CN104934799A (en) | Multifunctional intelligent socket | |
| CN102570845A (en) | Singlechip-based automatic voltage conversion system | |
| CN111510002A (en) | Power circuit, chip, intelligent switch and power supply method | |
| WO2013001395A1 (en) | Active power identification for load monitoring system | |
| CN115480093A (en) | Zero-crossing detection circuit, control method and control device | |
| CN218848232U (en) | Zero-crossing detection circuit, control system and electric appliance | |
| CN218003674U (en) | Flash-off state detection circuit and electronic device | |
| CA2811837A1 (en) | Electronic apparatus charging base and power-supply control method thereof | |
| US20110235219A1 (en) | Protecting device | |
| CN111510003A (en) | Power circuit, chip, intelligent switch and power supply method | |
| CN115328694A (en) | Equipment short-time power failure recovery circuit, electronic equipment and power failure recovery method of electronic equipment | |
| KR101042783B1 (en) | The Electronic Wall Mounted Switch | |
| EP3902158B1 (en) | Optical networking method, optical communication device, and optical networking system | |
| CN103296864A (en) | Power supply responding to multiple control signal formats | |
| CN202550863U (en) | Power supply responsive to multiple control signal formats | |
| CN110824995A (en) | Remote control alternating current switch module with micro standby power consumption | |
| KR101091590B1 (en) | Apparatus for getting a source of electric power in smart lamp switch | |
| CN114423108A (en) | Circuit for taking electricity and supporting power on-off control by single fire | |
| CN218767140U (en) | Test circuit for EMC voltage sag and short-time interruption test | |
| CN210670691U (en) | Alternating current control circuit and intelligent lamp control system | |
| CN216751522U (en) | Discharge circuit and household appliance | |
| CN220325274U (en) | Beauty instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |