CN114076844A - Zero-crossing control method, electronic device, and storage medium - Google Patents
Zero-crossing control method, electronic device, and storage medium Download PDFInfo
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Abstract
The embodiment of the application provides a zero-crossing control method, electronic equipment and a storage medium, wherein the zero-crossing control method comprises the following steps: acquiring a time point of a zero crossing point; under the condition that an action signal of closing a contact of the on-off device is detected, acquiring a current signal of load current; judging whether a continuous current zero exists or not according to the current signal and the time point of the zero crossing point; under the condition that the continuous current zero point exists, judging whether the continuous current zero point is superposed with the voltage zero point or not; and under the condition that the continuous current zero point is determined to be coincident with the voltage zero point, controlling the on-off device to be switched off at the voltage zero point based on the time point of the voltage zero point.
Description
Technical Field
The present invention relates to the field of electronic circuit technologies, and in particular, to a zero-crossing control method, an electronic device, and a storage medium.
Background
The contact adhesion of the switching device is due to the contact burning caused by the arc phenomenon at both ends of the contact of the switching device. In order to prevent the phenomenon, various designs basically adopt a zero-crossing control technology, and a contact of the on-off device is attracted near 0V (volt), so that the pressure difference between two ends of the contact is as small as possible, and the phenomenon of electric arc is avoided.
The on-off device takes a relay as an example, and at the moment of actuation of the relay, if the pressure difference between two ends of the elastic sheet contact is large, the contact is adhered due to the fact that the elastic sheet contact is close to the contact and large-energy electric arcs appear. In order to prevent the problem, a plurality of relays are controlled in a zero-crossing control mode, so that the on-off device is attracted or disconnected at a zero point. However, in the current algorithm design, the judgment is basically carried out according to only one zero point of current or voltage. In the current characteristics of the actual product, the current and the voltage are zero at the same time, and particularly when the relay is disconnected, if the relay is disconnected only by using the traditional current zero point, the voltage is too high at that moment, and external interference and other reasons cause that the current disconnection point is not at the absolute 0A (ampere) position, and the contact of the spring plate of the relay is at the risk of sparking.
Disclosure of Invention
In order to solve the existing technical problem, the application provides a zero-crossing control method, an electronic device and a storage medium, which can more effectively prevent the contact adhesion of the on-off device.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a zero-crossing control method, including: acquiring a time point of a zero crossing point; under the condition that an action signal of closing a contact of the on-off device is detected, acquiring a current signal of load current; judging whether a continuous current zero exists or not according to the current signal and the time point of the zero crossing point; under the condition that the continuous current zero point exists, judging whether the continuous current zero point is superposed with the voltage zero point or not; and under the condition that the continuous current zero point is determined to be coincident with the voltage zero point, controlling the on-off device to be switched off at the voltage zero point based on the time point of the voltage zero point.
In a second aspect, an embodiment of the present application provides an electronic device, which includes a zero point detection circuit, a processor, an on-off device, a voltage detection circuit, and a current detection circuit, where the zero point detection circuit is configured to detect a zero crossing time and send the zero crossing time to the processor; the processor sends out a control signal for controlling the closing of the contact of the on-off device, and an action signal for detecting the closing of the contact of the on-off device through the voltage detection circuit; when the voltage detection circuit detects a corresponding action signal for closing the contact of the on-off device, the action signal for closing the contact of the on-off device is sent to the processor; the current detection circuit is used for detecting load current and sending the load current to the processor after the contact of the on-off device is closed; and the processor acquires a current signal of the load current after the contact of the on-off device is closed, and controls the on-off device to be switched off at the voltage zero point based on the time point of the voltage zero point under the condition that the continuous current zero point exists and the continuous current zero point is coincided with the voltage zero point according to the current signal and the time point of the zero crossing point.
In a third aspect, an electronic device is provided in an embodiment of the present application, and includes a memory for storing a computer program and a processor, where the processor executes the computer program to perform the zero-crossing control method according to any embodiment of the present application.
In a fourth aspect, the present application provides a computer-readable storage medium, in which computer program code is stored, and when the computer program code is loaded and executed by a processor, the method for zero-crossing control according to any of the embodiments of the present application is performed.
The zero-crossing control method and the computer-readable storage medium provided by the above embodiments of the present application at least include the following advantages: when the contact of the on-off device is closed, whether continuous current zero exists or not is judged by obtaining a current signal of load current, and under the condition that the continuous current zero coincides with the voltage zero, the on-off device is controlled to be disconnected at the voltage zero according to the time point of the voltage zero, so that the risk that the contact of the on-off device is ignited due to overhigh instantaneous voltage caused by the adoption of current zero disconnection is avoided, and the service life of the on-off device can be prolonged better.
The electronic device provided by the above embodiment at least includes the following advantages: the electronic equipment comprises a zero point detection circuit, a processor, an on-off device, a voltage detection circuit and a current detection circuit, wherein the current detection circuit is used for detecting load current after a contact of the on-off device is closed to obtain a current signal of the load current and sending the current signal to the processor, when the contact of the on-off device is closed, the processor judges whether continuous current zero points exist or not through the current signal obtained from the current detection circuit to the load current, and under the condition that the continuous current zero points and the voltage zero points are overlapped, the on-off device is controlled to be disconnected at the voltage zero points according to the time points of the voltage zero points, the risk that the contact of the on-off device is ignited due to overhigh instantaneous voltage when the current zero points are disconnected is avoided, and the service life of the on-off device can be prolonged better.
Drawings
FIG. 1 is a schematic diagram of an electronic device in an embodiment of the present application;
FIG. 2 is a schematic diagram of an Internet of things system in an embodiment of the application;
FIG. 3 is a flow chart of a zero crossing control method in an embodiment of the present application;
FIG. 4 is a zero point comparison diagram before and after the on-off device adopts zero crossing control in the embodiment of the present application;
FIG. 5 is a flow chart of a zero crossing control method in another embodiment of the present application;
FIG. 6 is a flow chart of a zero crossing control method in an alternative embodiment of the present application;
FIG. 7 is a schematic diagram of a zero-crossing control apparatus according to an embodiment of the present application;
FIG. 8 is a schematic diagram of an electronic device in another embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device in another embodiment of the present application.
Detailed Description
The technical scheme of the invention is further elaborated by combining the drawings and the specific embodiments in the specification.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of implementations of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an electronic device according to an embodiment of the present application includes a zero point detection circuit 10, a processor 20, an on-off device 30, a voltage detection circuit 41, and a current detection circuit 42, where the zero point detection circuit 10 is configured to detect a zero crossing time and send the zero crossing time to the processor 20; the processor 20 sends out a control signal for controlling the closing of the contact of the on-off device 30, and detects an action signal for closing the contact of the on-off device 30 through the voltage detection circuit 41; when the voltage detection circuit 41 detects a corresponding action signal for closing the contact of the on-off device 30, the action signal for closing the contact of the on-off device 30 is sent to the processor 20; the current detection circuit 42 is used for detecting the load current and sending the load current to the processor 20 after the contact of the on-off device 30 is closed; the processor 20 obtains a current signal of the load current after the contacts of the on-off device 30 are closed, determines that a continuous current zero point exists according to the current signal and the time point of the zero crossing point, and controls the on-off device 30 to be switched off at the voltage zero point based on the time point of the voltage zero point under the condition that the continuous current zero point is coincident with the voltage zero point. The processor 20 may be a main controller including an Analog to digital converter (ADC), such as a Micro Controller Unit (MCU). The electronic device may be various switches and sockets, and the on-off device 30 is a key component for implementing on or off of the electronic device, for example, the on-off device 30 may be a relay in a typical embodiment.
The electronic device executes the zero-crossing control method provided by the embodiment of the application by running the computer program through the processor 20. Optionally, the processor 20 executing the zero-crossing control method includes implementing at least the following steps.
And under the condition that the continuous current zero point exists and the appearance frequency of the continuous current zero point is different from the current commercial power frequency multiple, the processor 20 determines the voltage near zero point of the continuous current zero point in a continuous time range, and controls the on-off device 30 to be switched off at the voltage near zero point based on the time point of the voltage near zero point. The voltage near zero may refer to a voltage relatively closest to zero within a duration range of the continuous current zero, or a voltage smaller than a set voltage threshold. Under the condition that the continuous current zero point exists and the continuous current zero point is not overlapped with the voltage zero point, the processor 20 controls the on-off device 30 to be switched off according to the time point corresponding to the voltage near zero point of the continuous current zero point in the continuous time range, so that when the contact of the on-off device 30 is controlled to be switched off under the condition that the continuous current zero point exists, the differential pressure between the elastic sheet contacts is relatively minimum, and the risk that the contact of the on-off device 30 is ignited due to overhigh instantaneous voltage caused by the adoption of the current zero point switching off is avoided to the maximum extent.
The processor 20 controls the on-off device 30 to be turned off at the current zero point based on the time point of the current zero point when it is determined that the continuous current zero point does not coincide with the voltage zero point.
The processor 20 determines the action time required for closing the contacts of the on-off device 30 according to the historical sending time of the control signal for closing the contacts of the on-off device 30 and the corresponding acquisition time of the action signal for closing the contacts of the on-off device 30, and sends a control signal for controlling the contacts of the on-off device 30 to be closed within the action time required for closing the contacts of the on-off device 30 by taking the current time point of the current zero point as a starting point so as to control the on-off device 30 to be opened at the current zero point. By monitoring the actual time required for closing the contacts of the on-off device 30 in real time, the on-off device 30 can be ensured to act at the zero crossing point position, and zero point offset is avoided.
The processor 20 sends an opening control signal to the on-off device 30, and detects an action signal of opening a contact of the on-off device through the voltage detection circuit 41; when the voltage detection circuit 41 detects the corresponding action signal of the on-off device 30, the action signal of the on-off device 30 is sent to the processor 20; the processor 20 determines the action time required for opening the contacts of the on-off device 30 according to the historical sending time of the control signal for opening the contacts of the on-off device 30 and the corresponding acquisition time of the action signal, and sends a control signal for controlling the on-off device 30 to be opened within the action time required for opening the contacts of the on-off device 30 by taking the time point of the voltage zero point as a starting point so as to control the on-off device 30 to be opened at the voltage zero point. The actual time required for the contact of the on-off device 30 to be disconnected is monitored in real time, so that the on-off device 30 can be ensured to be disconnected at the zero crossing point of voltage, and contact adhesion caused by sparking due to the fact that the on-off device is controlled to act on the basis of single current zero point is avoided.
In the above embodiment, the electronic device executes the zero-crossing control method through the processor 20, when the contact of the on-off device 30 is closed, whether a continuous current zero point exists is determined by obtaining the current signal of the load current, and under the condition that the continuous current zero point coincides with the voltage zero point, the on-off device 30 is controlled to be disconnected at the voltage zero point according to the time point of the voltage zero point, so that the risk of sparking on the contact of the on-off device 30 due to the fact that the instantaneous voltage of the current zero point disconnection is too high is avoided, the service life of the on-off device can be better prolonged, and the service life of the electronic device is also prolonged.
Fig. 2 is an internet of things system composed of electronic devices, a gateway 53, a server 52, a terminal device 51 and the like. This thing networking system includes: terminal device 51, server 22, gateway 53, electronic device 54, and router 55. The terminal device 51 may be any device having communication and storage functions, such as: the smart phone, the desktop computer, the notebook computer, the tablet computer or other smart communication devices with network connection functions. The server 52 may be a network access server, a database server, a cloud server, or the like. Optionally, the gateway 53 may be built based on a ZigBee protocol, and the electronic device 54 may be a device added in the gateway 53 in advance, for example, the electronic device 54 may be a device in a suite to which the gateway belongs when the gateway 53 leaves a factory; or the internet of things system may be connected to the device in the gateway 53 through a user operation subsequently, and the internet of things system may control the on or off of the internet of things device, such as an intelligent home, within the range of the local area network to which the internet of things system belongs or correspondingly connected to the internet of things device through the electronic device 54.
Optionally, a client capable of managing the smart home is installed in the terminal device 51, where the client may be an application client (such as a mobile phone APP) or a web page client, and is not limited herein.
Alternatively, the electronic device 54 may establish a network connection with the gateway 53 based on the ZigBee protocol, thereby joining the ZigBee network.
Both the gateway 53 and the terminal device 51 may be connected to a router 55, and may be connected to the ethernet through the router 55, and the router 55 may be connected to the server through a wired or wireless communication connection. For example, the gateway 53 and the terminal device 51 may store the acquired information in the server 52. Optionally, the terminal device 51 may also establish a network connection with the server 52 through 2G/3G/4G/5G, WiFi, so as to obtain data sent by the server 52.
Alternatively, the local area network path shown in fig. 2 indicates that the terminal device 51 is in the same local area network as the router 55 and the gateway 53, and the wide area network path indicates that the terminal device 51 is in the same local area network as the router 55 and the gateway 53. When the terminal device 51 is in the same local area network as the router 55 and the gateway 53, the terminal device 51 may interact with the gateway 53 and the electronic device 54 connected to the gateway 53 through a local area network path as shown in fig. 2; the gateway 53 and the electronic device 54 connected to the gateway 53 may also interact through a wide area network path as shown in fig. 2. When the terminal device 51 is not in the same local area network as the router 55 and the gateway 53, the terminal device 51 may interact with the gateway 53 and the electronic device 54 connected to the gateway 53 through a wide area network path as shown in fig. 2.
Referring to fig. 3, an embodiment of the present application provides a zero-crossing control method, which includes but is not limited to S101, S103, S105, S107, and S109, and is specifically described as follows:
and S101, acquiring the time point of the zero crossing point.
The zero-crossing point may include a current zero point and a voltage zero point. The electronic equipment can detect the time points corresponding to the current zero point and the voltage zero point through the zero point detection circuit and send the time points corresponding to the current zero point and the voltage zero point to the processor. And the processor acquires the time corresponding to the zero-crossing point and sends out a control signal for controlling the contact of the on-off device to be closed or opened according to the time corresponding to the zero-crossing point so as to control the contact of the on-off device to act near the zero point. In some optional embodiments, the zero detection circuit detecting the current zero and the voltage zero may include:
the zero point detection circuit detects current zero points and voltage zero points for multiple times, and corresponding current curves and voltage curves are respectively drawn according to time points of the current zero points and the voltage zero points obtained by each detection;
and performing deviation analysis on the current curves and the voltage curves obtained at each time, eliminating the current curves and the voltage curves with larger deviation, and taking the average value as the initialized current zero point and the initialized voltage zero point according to the zero points in the residual current curves and the voltage curves.
The accuracy of the detected current zero point and voltage zero point can be improved by detecting the voltage zero point and current zero point for a plurality of times to carry out initialization processing.
And S103, acquiring a current signal of the load current when the action signal of closing the contact of the on-off device is detected.
The load refers to an electronic product which is correspondingly connected with the on-off device so as to correspondingly obtain power supply or cut off power supply according to the connection or disconnection of the on-off device, such as an intelligent home which is correspondingly connected with the electronic equipment as shown in fig. 2. The processor can obtain a current signal of the load current through the current detection circuit under the condition that the processor detects an action signal of closing the contact of the on-off device, and further judge whether the on-off device is likely to have the conditions of a voltage zero point and a current zero point at the same time when the on-off device is opened or not by analyzing the current characteristics.
And S105, judging whether a continuous current zero point exists or not according to the current signal.
The continuous current zero point is whether the current is 0A for a certain time and whether the duration time exceeds a set time threshold, for example, the set time threshold may be 1 second, or may be other set time lengths. Judging whether continuous current zero points exist or not, analyzing a current signal of the load current to obtain the waveform characteristics of the load current, and when the load current continues to be 0A, determining that the continuous current zero points exist, and further determining the time corresponding to the continuous current zero points and the time duration corresponding to the time duration according to the waveform characteristics of the load current; on the contrary, when the current zero point of the load current repeatedly appears like a sine wave, the current zero point is regarded as a non-continuous current zero point, that is, there is no continuous current zero point.
And S107, under the condition that the continuous current zero point exists, judging whether the continuous current zero point is coincided with the voltage zero point according to the continuous current zero point and the zero-crossing time.
When the processor performs zero-crossing control on the on-off device according to a single current zero point, if the voltage zero point is superposed with the current zero point, the voltage may be too high at the moment of current zero point disconnection, and the contact adhesion is caused by the phenomenon of electric arc due to too large pressure difference between two ends of the contact of the on-off device. And the processor acquires a current signal of the load current after the contact of the on-off device is closed, analyzes the current signal and determines whether continuous current zero exists, and judges whether the continuous current zero coincides with the voltage zero according to the time period corresponding to the continuous current zero and the time corresponding to the voltage zero.
It should be noted that the overlapping may mean that the time corresponding to the current zero point is the same as the time corresponding to the voltage zero point, and/or the deviation value between the time corresponding to the current zero point and the time corresponding to the voltage zero point is smaller than the set value, for example, 1 second.
And S109, controlling the on-off device to be switched off at the voltage zero point based on the time point of the voltage zero point under the condition that the continuous current zero point is determined to be coincident with the voltage zero point.
The processor may determine that the continuous current zero coincides with the voltage zero, specifically, the time corresponding to the voltage zero belongs to the time period corresponding to the current zero according to the time period corresponding to the continuous current zero and the time corresponding to the voltage zero, and if the time corresponding to the voltage zero is the 8 th second, and the time period corresponding to the current zero is the 5 th to 10 th seconds, it may be determined that the continuous current zero coincides with the voltage zero. The processor controls the on-off device to be disconnected at the voltage zero point based on the time point of the voltage zero point under the condition that the continuous current zero point is determined to coincide with the voltage zero point, as shown in fig. 4, a zero point comparison diagram before and after zero-crossing control is adopted for the on-off device, and when the continuous current zero point is determined to coincide with the voltage zero point, the current zero point is disconnected at the same time, the on-off device is controlled to be disconnected at the voltage zero point, so that the risk of sparking of contacts of the on-off device due to overhigh voltage at the moment of disconnection of the current zero point can be avoided.
In the above embodiment, when the contacts of the on-off device are closed, the processor determines whether a continuous current zero point exists by obtaining the current signal of the load current, and under the condition that the continuous current zero point is overlapped with the voltage zero point, the on-off device is controlled to be disconnected at the voltage zero point according to the time point of the voltage zero point, so that the risk that the contacts of the on-off device are ignited due to overhigh instantaneous voltage caused by the adoption of the current zero point disconnection is avoided, and the service life of the on-off device can be better prolonged.
Optionally, the controlling, at the time point based on the voltage zero point, the on-off device after the voltage zero point is turned off further includes:
detecting whether the on-off device is disconnected at the voltage zero point;
and under the condition that the on-off device is not disconnected, controlling the on-off device to execute disconnection again, and returning to the step of detecting whether the on-off device is disconnected at the voltage zero point.
The non-disconnection of the switching device may comprise that the switching device has not performed a disconnection action or that the switching device has performed a disconnection action but that there is still a sticking. The accuracy of the action executed by the on-off device is ensured by monitoring the action executed by the on-off device and controlling the on-off device to be switched off again when the action executed by the on-off device is abnormal.
Optionally, the method further includes, when it is detected that the on-off device is not turned off:
sending out reminding information, wherein the reminding information can be voice reminding, light reminding or character reminding; and/or
And recording the times of the on-off device not being switched off, and sending the records to a specified database for storage, wherein the database can be positioned at a mobile phone terminal, a cloud end or electronic equipment.
The situation of the action executed by the on-off device is monitored, and the reminding information is timely sent out when the action executed by the on-off device is abnormal, so that related personnel can timely know the fault and take corresponding repairing measures. And recording and reporting the times and time of the abnormal execution action of the on-off device, and reserving for follow-up maintenance and checking reasons.
In some embodiments, referring to fig. 5, the zero-crossing control method further includes:
s110, under the condition that a continuous current zero point exists and the appearance frequency of the continuous current zero point is different from the current commercial power frequency multiple, determining a time point corresponding to a voltage near zero point of the continuous current zero point in a continuous time range;
and S111, controlling the on-off device to be switched off at the voltage near zero point based on the time point of the voltage near zero point.
The method comprises the steps that after a contact of the on-off device is closed, a current signal of load current is obtained by a processor to be analyzed, whether a continuous current zero point is overlapped with a voltage zero point is judged according to a time period corresponding to the continuous current zero point and time corresponding to the voltage zero point under the condition that the continuous current zero point exists, when the continuous current zero point exists and the appearance frequency of the continuous current zero point is different from the current commercial power frequency multiple, whether a voltage near zero point exists in the continuous time range or not is judged, and under the condition that the voltage near zero point exists in the continuous time range, the on-off device is controlled to be switched off at the voltage near zero point on the basis of the time point of the voltage near zero point. As an alternative embodiment, the voltage near zero point refers to a voltage relatively closest to zero point within a duration range of the continuous current zero point, in which case, a value of the voltage near zero point is not uniquely determined. As another alternative, the voltage near zero may be smaller than the voltage of the set voltage threshold. The set voltage threshold is mainly determined according to a minimum differential pressure value corresponding to a risk of sparking possibly generated at the moment of disconnection of the contact of the on-off device, namely, at the moment of disconnection of the contact of the on-off device, the differential pressure between the contact points of the elastic sheet is at least smaller than a certain voltage value, if 5V is adopted, the risk of sparking is not generated, the set voltage threshold is correspondingly determined according to the voltage value, and if the set voltage threshold is determined to be 5V, the voltage near zero point is a voltage smaller than 5V.
In the above embodiment, the processor controls the on-off device to be turned off according to the time corresponding to the voltage zero point of the continuous current zero point within the continuous time range when the continuous current zero point is determined to exist and the continuous current zero point is not overlapped with the voltage zero point, so that when the contact of the on-off device is turned off under the condition that the continuous current zero point exists, the differential pressure between the contacts of the elastic sheet is relatively minimum, the risk of sparking on the contact of the on-off device due to the fact that the instantaneous voltage of the current zero point turning off is too high is avoided, and the service life of the on-off device can be better prolonged.
Optionally, in a case that the voltage near zero is a voltage smaller than a set voltage threshold, the controlling, at the voltage near zero, the on-off device to be turned off at the time point based on the voltage near zero may include:
and when a plurality of voltage near zero points exist, controlling the on-off device to be switched off at the voltage near zero point according to the time point of the voltage near zero point relative to the earliest time.
The on-off device is controlled to be switched off at the voltage near zero point according to the sequence of time points of a plurality of voltage near zero points which are smaller than a set voltage threshold value within the duration time of the current zero point and the time point of the voltage near zero point relative to the earliest time, so that the contact of the on-off device is switched off at the earliest in a safety range under the condition that the continuous current zero point exists, the risk of ignition of the contact of the on-off device caused by overhigh instantaneous voltage during the current zero point switching-off is avoided, and the service life of the on-off device is prolonged.
When the voltage near zero point is a voltage smaller than a set voltage threshold, the determining a time point corresponding to the voltage near zero point of the continuous current zero point in the continuous time range includes:
judging whether the continuous current zero point has a voltage near zero point within a continuous time range;
and under the condition that the voltage near zero point exists in the continuous time range of the continuous current zero point, determining a time point corresponding to the voltage near zero point.
The set voltage threshold is determined according to a minimum differential pressure value corresponding to a risk of sparking which is possibly generated at the moment of disconnection of the contacts of the on-off device, the risk of sparking is possibly generated when the pressure difference between the elastic sheet contacts of the on-off device is larger than or equal to the minimum differential pressure value, and the risk of sparking of the contacts is avoided when the pressure difference between the elastic sheet contacts of the on-off device is smaller than the minimum differential pressure value. Therefore, the minimum differential pressure value can be used as the voltage near zero point, the contact of the on-off device is controlled to be disconnected in the time corresponding to the voltage near zero point under the condition that the continuous current zero point exists, at the moment, the differential pressure between the elastic sheet contacts is the voltage value corresponding to the voltage near zero point and is smaller than the minimum differential pressure value corresponding to the sparking risk possibly generated in the moment of the disconnection of the contact of the on-off device, the risk of sparking on the contact of the on-off device due to the fact that the instantaneous voltage of the current zero point disconnection is too high can be avoided, and the service life of the on-off device can be prolonged better.
In some embodiments, the zero-crossing control method further comprises:
and under the condition that the continuous current zero point is determined not to coincide with the voltage zero point, controlling the on-off device to be switched off at the current zero point based on the time point of the current zero point.
The continuous current zero point is whether the current is 0A or not and the continuous time exceeds a set time threshold or not. Judging whether continuous current zero points exist or not, analyzing a current signal of the load current to obtain the waveform characteristics of the load current, and when the load current continues to be 0A, determining that the continuous current zero points exist, and further determining the time corresponding to the continuous current zero points and the time duration corresponding to the time duration according to the waveform characteristics of the load current; on the contrary, when the current zero point of the load current repeatedly appears like a sine wave periodically, it is regarded that there is no continuous current zero point. And when the processor determines that the continuous current zero point exists but the continuous current zero point is not coincident with the voltage zero point, the contact of the on-off device is controlled to be opened based on the current zero point.
In some embodiments, the zero-crossing control method further comprises:
and when the current zero point is determined to exist and the frequency of the current zero point is a set multiple of the power grid frequency, controlling the on-off device to be switched off at the voltage zero point based on the time point of the voltage zero point.
The set multiple of the grid frequency may be one or two times of the grid frequency, and as an alternative specific example, the frequency of the current zero is 50 hz or 100 hz. When the frequency of the current zero is a set multiple of the power grid frequency, the current zero is regarded as the existence of continuous current zero, and when the contact of the on-off device is closed, the on-off device is controlled to be switched off according to the time point of the voltage zero, so that the risk that the contact of the on-off device is ignited due to overhigh instantaneous voltage generated by switching off the current zero is avoided, and the service life of the on-off device can be better prolonged.
In some embodiments, the controlling the on/off device to be turned off at the voltage zero point based on the time point of the voltage zero point includes:
sending a disconnected control signal to the on-off device;
acquiring an action signal of the on-off device for opening the contact after the control signal for opening is sent out;
determining the action time required by the contact of the on-off device to be disconnected according to the historical sending time of the control signal and the corresponding acquisition time of the action signal when the contact of the on-off device is disconnected;
and taking the time point of the voltage zero point as a starting point, and sending a control signal for controlling the contact of the on-off device to be disconnected within the action time required by the contact of the on-off device to be disconnected so as to control the contact of the on-off device to be disconnected at the voltage zero point.
The contact of the on-off device is closed or opened, namely the on-off device controls the elastic sheet to be closed or opened after receiving a control signal sent by the processor. The voltage detection circuit can monitor the mechanical action of closing or opening of the elastic sheet of the on-off device, when the elastic sheet of the on-off device is closed or opened, the voltage detection circuit immediately receives an action signal of closing or opening of the contact of the on-off device and sends the action signal of closing or opening of the contact of the on-off device to the processor, and therefore the processor obtains the action signal of closing or opening of the contact of the on-off device from the voltage detection circuit. Wherein, one action can mean that the contact of the on-off device is switched from the current closed state to the open state; or that the switching device contacts are switched from the current open state to the closed state.
The processor can determine the action time of the on-off device according to a control signal for sending off the on-off device and the action time of the on-off device for completing the contact disconnection according to the control signal, wherein the action time is the actual time of the on-off device for executing the mechanical action of the elastic sheet contact disconnection. The processor can monitor the mechanical action time required by completing each opening action in the whole life cycle of the on-off device according to the sending time of a control signal for controlling the opening of the contact of the on-off device and the acquisition time of an action signal formed when the on-off device completes the opening action of the contact after receiving the control signal. When the on-off device controls the on-off device to be switched off according to the voltage zero point, the time point of the voltage zero point is used as a starting point, a control signal for controlling the contact of the on-off device to be switched off is sent in the action time required by the contact of the on-off device to be switched off, the contact of the on-off device can be controlled to be switched off at the zero point voltage, and the problem that the contact of the on-off device deviates from the zero crossing point due to various reasons such as external interference or aging of the on-off device is avoided.
In general, as the time of use of the on/off device increases, aging may occur, resulting in a change in the actual time it takes for the on/off device to actually complete an action as the time of use increases. The method comprises the steps of determining the action time required by the opening of the contact of the on-off device through the historical sending time of the control signal and the corresponding acquisition time of the action signal when the contact of the on-off device is opened, monitoring the action time required by the on-off device to finish the action, knowing the change trend of the action time of the on-off device, adjusting the time for sending the control signal for controlling the opening of the contact of the on-off device according to the action time, ensuring that the control signal is sent out when the voltage zero point is used as a starting point and the action time actually required by the opening of the contact is ensured, eliminating the deviation of the zero point position caused by the increase of the mechanical action time of the on-off device along with aging, and ensuring that the on-off device can be closed and opened at the zero point in different use time periods. The historical sending time of the control signal and the corresponding acquisition time of the action signal when the contact of the on-off device is disconnected can refer to the sending time of the control signal and the corresponding acquisition time of the action signal when the contact of the on-off device is controlled to be disconnected at the previous time before the contact of the on-off device is controlled to be disconnected according to the voltage zero point; or the sending time of the control signal and the acquisition time of the corresponding action signal when the contact of the on-off device is controlled to be opened for a plurality of times. Taking the current M-th time of controlling the contact of the on-off device to be disconnected according to the voltage zero point as an example, the historical sending time of the control signal and the corresponding acquisition time of the action signal when the contact of the on-off device is disconnected can refer to the sending time of the control signal and the corresponding acquisition time of the action signal when the contact of the on-off device is controlled to be disconnected at the M-1 st time; or the M-1 th and the M-2 th times, the M-n times control the sending time of the control signal and the acquisition time of the corresponding action signal when the contact of the on-off device is disconnected.
In the embodiment, the processor monitors the action of closing or opening the contact of the on-off device, and adjusts the sending time of the control signal for controlling the opening of the on-off device by monitoring the action time of the on-off device in real time, so that the ignition problem caused by deviation of the closing or opening from the original zero position along with the aging of the on-off device is avoided, and the contact adhesion of the on-off device is effectively prevented; the processor determines the action time of the on-off device for opening the contact according to the sending time of a control signal for controlling the on-off device to open the contact and the acquisition time of an action signal for opening the contact of the on-off device, and the monitoring of the mechanical action time of the whole service life cycle of the on-off device can be realized by recording and analyzing the sending time of the control signal and the acquisition time of the action signal, so that the action of the on-off device is ensured to be completed at a zero crossing point in the whole service life cycle, and the service life of the on-off device is further prolonged better.
In order to more fully understand the zero-crossing control method provided in the embodiments of the present application, please refer to fig. 6, which takes an electronic device as an example, and an alternative embodiment of the zero-crossing control method is described. The switch comprises a zero point detection circuit, an on-off device, a processor, a voltage detection circuit and a current detection circuit, wherein the processor is an MCU, and the on-off device is a relay.
S11, detecting the time point of the alternating current at the zero point by the zero point detection circuit, and sending the time point of the current point at the zero point to the processor, so that the processor can obtain the time point of the periodic voltage zero point, which is recorded as t 0;
s12, the processor sends a first control signal for controlling the closing of the contact of the on-off device, the sending time of the first control signal is recorded as t1, the voltage detection circuit monitors an action signal for closing the contact of the on-off device, the time point of obtaining the action signal is recorded as t2, and the mechanical action time t3 for closing the contact of the on-off device can be obtained by calculating t2-t 1; the processor can send out a first control signal for controlling the contact closing of the on-off device within a time period from t0 to t3, and the on-off device can be ensured to be attracted at zero voltage;
s13, the processor sends a second control signal for controlling the contact of the on-off device to be disconnected, the sending time of the second control signal is recorded as t4, the voltage detection circuit monitors an action signal for the contact of the on-off device to be disconnected, the time point when the action signal is obtained is recorded as t5, and the mechanical action time t6 for the contact of the on-off device to be disconnected can be obtained by calculating t5-t 4; the processor can send out a second control signal for controlling the contact of the on-off device to be opened in a time period from t0 to t6, and the on-off device can be ensured to be opened at the zero voltage;
s14, after the processor controls the contact of the on-off device to be closed, the waveform characteristics of the load current are obtained through the current detection circuit, and whether a continuous current zero point exists is judged;
if the judgment result of the S14 is yes, executing S15; if the judgment result of the S14 is negative, executing S20;
s15, when the existence of the continuous current zero point is determined, judging whether the continuous current zero point and the voltage zero point coincide or not according to the time points of the continuous current zero point and the voltage zero point;
if the judgment result of the S14 is yes, executing S16; if the judgment result of the S15 is negative, executing S20;
and S16, when it is determined that continuous current zero coincides with voltage zero, controlling the on-off device to be switched off at the voltage zero based on the time point of the voltage zero.
And S20, controlling the on-off device to be switched off based on the time point of the current zero point.
In the above embodiment, after the closing of the contact of the on-off device is detected, the current detection circuit sends the detected current signal to the processor, the processor analyzes the current signal to determine whether the continuous current zero point and the voltage zero point coincide, and when it is determined that the continuous current zero point and the voltage zero point coincide, the voltage zero point is used for switching off. At the moment, the current is also zero, so that the ignition risk of the elastic sheet contact of the on-off device under the condition can be reduced, the service life of the on-off device is prolonged, and the service life of the switch is correspondingly prolonged.
In another aspect of the present embodiment, please refer to fig. 7, which provides an over-current on/off device. In an exemplary embodiment, the zero-crossing control apparatus, which may be implemented by a processor, includes a first obtaining module 211 for obtaining a time point of a zero-crossing point; a second obtaining module 212, configured to obtain a current signal of the load current when the motion signal that the on-off device contact is closed is detected; a judging module 213, configured to judge whether a continuous current zero exists according to the current signal; under the condition that the existence of continuous current zero point is determined, judging whether the continuous current zero point is coincided with the voltage zero point or not according to the continuous current zero point and the zero crossing time; a zero-crossing control module 214, configured to control the on-off device to switch off at the voltage zero point based on a time point of the voltage zero point when it is determined that the continuous current zero point coincides with the voltage zero point.
The zero-crossing control module 214 is further configured to determine a time point corresponding to a voltage near zero point of the continuous current zero point within a duration time range, when it is determined that the continuous current zero point exists and the appearance frequency of the continuous current zero point is different from the current commercial power frequency multiple; and controlling the on-off device to be switched off at the voltage near zero point based on the time point of the voltage near zero point.
The zero-crossing control module 214 is further configured to control the on-off device to be turned off at the current zero point based on a time point of the current zero point when it is determined that the continuous current zero point does not coincide with the voltage zero point.
The zero-crossing control module 214 is further configured to send a disconnection control signal to the on-off device; acquiring an action signal of the on-off device for opening the contact after the control signal for opening is sent out; determining the action time required by the contact of the on-off device to be disconnected according to the historical sending time of the control signal and the corresponding acquisition time of the action signal when the contact of the on-off device is disconnected; and taking the time point of the voltage zero point as a starting point, and sending a control signal for controlling the contact of the on-off device to be disconnected within the action time required by the contact of the on-off device to be disconnected so as to control the contact of the on-off device to be disconnected at the voltage zero point.
It should be noted that: the zero-crossing control device provided in the above embodiment is exemplified by only dividing the program modules when monitoring and iteratively updating the mechanical action time of the on-off device for closing and opening in the full life range so as to make the on-off device be closed and opened at the zero point in the full life cycle, and in practical application, the processing can be distributed to different program modules according to the needs, that is, the internal structure of the device can be divided into different program modules, so as to complete all or part of the processing described above. In addition, the zero-crossing control device provided by the above embodiment and the zero-crossing control method embodiment of the present application belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment and are not described herein again.
Referring to fig. 8, an optional hardware structure diagram of the electronic device according to the embodiment of the present application is provided, where the electronic device includes a memory 21 and a processor 22, and the memory 21 stores therein a computer program for implementing the zero-crossing control method according to any embodiment of the present application, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
The electronic device can be an electronic product such as an intelligent switch and an intelligent socket for realizing on/off control of a loop where the electronic device is located.
Please refer to fig. 9, which is a block diagram of a hardware structure of an electronic device according to an embodiment of the present application. As shown in fig. 9, the electronic device is a switch 64. Among other things, the switch 64 may have a relatively large difference due to different configurations or performances, and may include one or more processors 64a (CPUs) (the processor 64a may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 64b for storing the data 1400, one or more storage media 1600 (e.g., one or more mass storage devices) for storing the application 1500 or the data 1400, a relay J, and a mechanical switch K. The processor 64a is respectively connected with the relay J, the mechanical switch K, the memory 64b and the storage medium 1600; memory 64b and storage medium 1600 may be transient or persistent storage. The program stored in the storage medium 1600 may include one or more modules, each of which may include a series of instruction operations for a server. Further, the processor 64a may be configured to communicate with the storage medium 1600 to execute a series of instruction operations in the storage medium 1600 on the switch 14.
When the mechanical switch K is pressed, the processor 64a receives a pressed signal command, the relay J is a controlled switch and is connected to the control end of the processor 64a, the processor 64a can output a control signal through the control end to control the opening and closing of the relay J, the relay J is connected to the main circuit, the main circuit is connected to a power supply and a controlled device, and the power supply can be 220V mains supply.
The switch 64 may also include one or more internal power supplies 1000, one or more wired or wireless network interfaces 1100, one or more input-output interfaces 1200, and/or one or more operating systems 1300, such as Windows server, MacOSXTM, UnixTM, LinuxTM, FreeBSDTM, and so forth.
The input output interface 1200 may be used to receive or transmit data 1400 via a network. Specific examples of such networks may include wireless networks provided by the communications provider of the switch 64. In one example, the i/o interface 1200 includes a network adapter (NIC) that can be connected to other network devices through a base station to communicate with the internet. In one example, the input/output interface 1200 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner. It will be understood by those skilled in the art that the configuration shown in fig. 9 is merely illustrative and is not intended to limit the configuration of the switch 64 described above. For example, the switch 64 may also include more or fewer components than shown in FIG. 9, or have a different configuration than shown in FIG. 9.
The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the foregoing working mode configuration method and the foregoing switch control method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. A zero-crossing control method, comprising:
acquiring a time point of a zero crossing point;
under the condition that an action signal of closing a contact of the on-off device is detected, acquiring a current signal of load current;
judging whether a continuous current zero exists or not according to the current signal;
under the condition that the existence of continuous current zero point is determined, judging whether the continuous current zero point is coincided with the voltage zero point or not according to the continuous current zero point and the zero crossing time;
and under the condition that the continuous current zero point is determined to be coincident with the voltage zero point, controlling the on-off device to be switched off at the voltage zero point based on the time point of the voltage zero point.
2. A zero-crossing control method as claimed in claim 1, further comprising:
under the condition that the continuous current zero point exists and the appearance frequency of the continuous current zero point is different from the current commercial power frequency multiple, determining a time point corresponding to the voltage near zero point of the continuous current zero point within the duration time range;
and controlling the on-off device to be switched off at the voltage near zero point based on the time point of the voltage near zero point.
3. A zero-crossing control method as claimed in claim 1, further comprising:
and under the condition that the continuous current zero point is determined not to coincide with the voltage zero point, controlling the on-off device to be switched off at the current zero point based on the time point of the current zero point.
4. A zero-crossing control method as claimed in any one of claims 1 to 3, wherein the controlling the on-off device to be turned off at the voltage zero point based on the time point of the voltage zero point includes:
sending a disconnected control signal to the on-off device;
acquiring an action signal of the on-off device for opening the contact after the control signal for opening is sent out;
determining the action time required by the contact of the on-off device to be disconnected according to the historical sending time of the control signal and the corresponding acquisition time of the action signal when the contact of the on-off device is disconnected;
and taking the time point of the voltage zero point as a starting point, and sending a control signal for controlling the contact of the on-off device to be disconnected within the action time required by the contact of the on-off device to be disconnected so as to control the contact of the on-off device to be disconnected at the voltage zero point.
5. An electronic device is characterized by comprising a zero point detection circuit, a processor, a switching device, a voltage detection circuit and a current detection circuit, wherein the zero point detection circuit is used for detecting the time of a zero crossing point and sending the time of the zero crossing point to the processor; the processor sends out a control signal for controlling the closing of the contact of the on-off device, and an action signal for detecting the closing of the contact of the on-off device through the voltage detection circuit; when the voltage detection circuit detects a corresponding action signal for closing the contact of the on-off device, the action signal for closing the contact of the on-off device is sent to the processor; the current detection circuit is used for detecting load current and sending the load current to the processor after the contact of the on-off device is closed; and the processor acquires a current signal of the load current after the contact of the on-off device is closed, and controls the on-off device to be switched off at the voltage zero point based on the time point of the voltage zero point under the condition that the continuous current zero point exists and the continuous current zero point is coincided with the voltage zero point according to the current signal and the time point of the zero crossing point.
6. The electronic device of claim 5,
and under the condition that the continuous current zero point exists and the appearance frequency of the continuous current zero point is different from the current commercial power frequency multiple, the processor determines the voltage near zero point of the continuous current zero point in a continuous time range, and controls the on-off device to be switched off at the voltage near zero point based on the time point of the voltage near zero point.
7. The electronic device of claim 5,
and the processor controls the on-off device to be switched off at the current zero point based on the time point of the current zero point under the condition that the continuous current zero point is determined not to coincide with the voltage zero point.
8. The electronic device of claim 7,
the processor determines the action time required by the contact closing of the on-off device according to the historical sending time of the control signal for the contact closing of the on-off device and the corresponding acquisition time of the action signal for the contact closing of the on-off device, and sends a control signal for controlling the contact closing of the on-off device within the action time required by the contact closing of the on-off device by taking the current time point of the current zero point as a starting point so as to control the on-off device to be opened at the current zero point.
9. The electronic device of any of claims 5-8,
the processor sends a disconnected control signal to the on-off device, and detects an action signal of the on-off device when a contact is disconnected through the on-off device voltage detection circuit;
when the on-off device voltage detection circuit detects the action signal of the on-off device with the contact disconnected correspondingly, the action signal of the on-off device with the contact disconnected is sent to the processor;
the processor determines the action time required by the disconnection of the contact of the on-off device according to the historical sending time of the control signal for the disconnection of the contact of the on-off device and the corresponding acquisition time of the action signal, and sends a control signal for controlling the disconnection of the on-off device within the action time required by the disconnection of the contact of the on-off device by taking the time point of the voltage zero point as a starting point so as to control the disconnection of the on-off device at the voltage zero point.
10. An electronic device comprising a memory for storing a computer program and a processor, characterized in that the processor, when running the computer program, performs the zero crossing control method of any of claims 1 to 4.
11. A computer-readable storage medium, characterized in that a computer program code is stored therein, which when loaded and executed by a processor, implements the zero-crossing control method of any of claims 1 to 4.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908439A (en) * | 2010-07-09 | 2010-12-08 | 北海市深蓝科技发展有限责任公司 | Self-adaptive electromagnetic relay zero-crossing on and off control method |
| CN205583666U (en) * | 2016-05-11 | 2016-09-14 | 广东好太太智能科技有限公司 | Use zero passage protection circuit on electric airer |
| CN106526474A (en) * | 2016-12-01 | 2017-03-22 | 国网冀北电力有限公司电力科学研究院 | Zero-crossing operation test system and method for load switch for electric energy meter |
| CN108335947A (en) * | 2018-03-22 | 2018-07-27 | 浙江英洛华新能源科技有限公司 | Anti- capacitive load heavy current impact type DC relay |
| CN108807076A (en) * | 2018-05-07 | 2018-11-13 | 深圳拓邦股份有限公司 | A kind of means of relay controlling, control panel, wall-hung boiler and water heater |
| CN109036964A (en) * | 2018-08-11 | 2018-12-18 | 深圳市健思研科技有限公司 | Control method, storage medium, control device and the relay that contact prevents adhesion |
| CN109586323A (en) * | 2019-01-24 | 2019-04-05 | 江苏金智科技股份有限公司 | A kind of zero passage phase change method |
| CN211206607U (en) * | 2019-08-26 | 2020-08-07 | 深圳绿米联创科技有限公司 | Current detection device and electronic apparatus |
-
2020
- 2020-08-21 CN CN202010849444.8A patent/CN114076844A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908439A (en) * | 2010-07-09 | 2010-12-08 | 北海市深蓝科技发展有限责任公司 | Self-adaptive electromagnetic relay zero-crossing on and off control method |
| CN205583666U (en) * | 2016-05-11 | 2016-09-14 | 广东好太太智能科技有限公司 | Use zero passage protection circuit on electric airer |
| CN106526474A (en) * | 2016-12-01 | 2017-03-22 | 国网冀北电力有限公司电力科学研究院 | Zero-crossing operation test system and method for load switch for electric energy meter |
| CN108335947A (en) * | 2018-03-22 | 2018-07-27 | 浙江英洛华新能源科技有限公司 | Anti- capacitive load heavy current impact type DC relay |
| CN108807076A (en) * | 2018-05-07 | 2018-11-13 | 深圳拓邦股份有限公司 | A kind of means of relay controlling, control panel, wall-hung boiler and water heater |
| CN109036964A (en) * | 2018-08-11 | 2018-12-18 | 深圳市健思研科技有限公司 | Control method, storage medium, control device and the relay that contact prevents adhesion |
| CN109586323A (en) * | 2019-01-24 | 2019-04-05 | 江苏金智科技股份有限公司 | A kind of zero passage phase change method |
| CN211206607U (en) * | 2019-08-26 | 2020-08-07 | 深圳绿米联创科技有限公司 | Current detection device and electronic apparatus |
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