CN111478291A - Relay protection method and device for smart home - Google Patents

Abstract

The present application provides a relay protection method and device for smart home, and relates to the technical field of relay safety. The method includes: collecting a voltage signal of a relay discharge terminal of an electrical appliance; acquiring a reference voltage of the relay discharge terminal when the electrical appliance is in a normal operation state signal; control the output frequency of the servo feed end according to the reference voltage signal and the voltage signal. The voltage signal of the discharge terminal of the relay of the electrical appliance can reflect the operating state of the electrical appliance, so the output frequency of the servo feeding terminal can be controlled according to the voltage signal and the reference voltage signal of the discharge terminal of the relay when the electrical appliance is in normal operation, so that the electrical appliance is in a normal operating state. , and then effectively ensure the safe operation of electrical appliances.

Description

A kind of relay protection method and device for smart home

technical field

The present application relates to the technical field of relay safety, and in particular, to a relay protection method and device for smart homes.

Background technique

With the development of science and technology, smart home has gradually entered people's home life. Smart home is a low-voltage electrical appliance. After a period of use, the performance of low-voltage electrical appliances may decrease and some components may have problems. The protection measures of voltage electrical appliances are all reflected in the home circuit, such as the overcurrent protection of the socket and the overcurrent protection of the circuit. This method can only prevent the low-voltage electrical appliances from affecting other electrical appliances in the same circuit after the problem occurs, and cannot be effective. Protect low-voltage appliances themselves.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a relay protection method and device for smart home, so as to improve the problem that the low-voltage electrical appliance itself cannot be effectively protected in the prior art.

In a first aspect, an embodiment of the present application provides a relay protection method for a smart home, which is applied to a relay protection device for a smart home. The method includes: collecting a voltage signal of a relay discharge terminal of an electrical appliance; obtaining that the electrical appliance is in a normal state The reference voltage signal of the discharge end of the relay in the running state; the output frequency of the servo feed end is controlled according to the reference voltage signal and the voltage signal, so that the electrical appliance is in a normal running state.

In the above implementation process, the voltage signal of the relay discharge terminal of the electrical appliance can reflect the operating state of the electrical appliance, so the output frequency of the servo feed terminal can be controlled according to the voltage signal and the reference voltage signal of the relay discharge terminal when the electrical appliance is in a normal operating state, so that the The electrical appliance is in a normal operating state, thereby effectively ensuring the safe operation of the electrical appliance.

Optionally, the collecting the voltage signal of the discharge terminal of the relay includes:

Collect a plurality of voltage signals at the discharge end of the relay at a preset collection frequency, and determine the voltage signal according to the plurality of voltage signals.

In the above implementation process, since the voltage signal at the discharge terminal of the relay is not fixed at different times, multiple voltage signals are collected according to the preset collection frequency, so that the voltage signal can be accurately determined according to the multiple voltage signals.

Optionally, the controlling the output frequency of the servo feed end according to the reference voltage signal and the voltage signal includes: if the voltage signal is greater than the reference voltage signal, controlling the servo feed end to increase the output frequency, so as to increase the voltage of the discharge terminal of the relay so that the electrical appliance is in a normal operation state.

Optionally, the controlling the output frequency of the servo feed end according to the reference voltage signal and the voltage signal, so that the electrical appliance is in a normal operation state, includes: if the voltage signal is less than the reference voltage signal, then The servo feeding end is controlled to reduce the output frequency, so as to reduce the voltage of the discharge end of the relay, so that the electrical appliance is in a normal operation state.

In the above implementation process, when the voltage signal is greater than the reference voltage signal, indicating that the voltage is too high, the servo feed end can be controlled to increase the output frequency to increase the voltage at the discharge end of the relay; when the voltage signal is smaller than the reference voltage signal, the servo feed end can be controlled Increase the output frequency to increase the voltage of the discharge terminal of the relay, so that the electrical appliance is in a normal operating state, thereby effectively ensuring the safe operation of the electrical appliance.

Optionally, the reference voltage signal includes a maximum reference voltage signal and a minimum reference voltage signal, the maximum reference voltage signal is greater than the minimum reference voltage signal, and the servo process is controlled according to the reference voltage signal and the voltage signal. The output frequency of the feeding terminal includes: if the voltage signal is greater than the maximum reference voltage signal, controlling the servo feeding terminal to increase the output frequency to increase the voltage of the discharge terminal of the relay; if the voltage signal is less than the maximum reference voltage signal If the minimum reference voltage signal is obtained, the servo feed end is controlled to reduce the output frequency, so as to reduce the voltage at the discharge end of the relay.

In the above implementation process, when the reference voltage signal is within the voltage signal range of the electrical appliance in the normal operating state, the output of the servo feed end can be controlled by judging whether the voltage signal is within the voltage signal range of the reference voltage signal, so as to ensure Appliances operate normally.

In a second aspect, an embodiment of the present application provides a relay protection device for smart home, the device includes: a voltage signal acquisition module for acquiring voltage signals of a relay discharge terminal of an electrical appliance; a reference voltage acquisition module for acquiring all The reference voltage signal of the discharge end of the relay when the electrical appliance is in a normal operation state; the control module is used to control the output frequency of the servo feed end according to the reference voltage signal and the voltage signal, so that the electrical appliance is in a normal operation state.

Optionally, the voltage signal collection module includes: a voltage signal collection unit, configured to collect a plurality of voltage signals at the discharge end of the relay at a preset collection frequency, and determine the voltage signal according to the plurality of voltage signals .

Optionally, the control module includes: an output frequency increase control unit, configured to control the servo feed end to increase the output frequency when the voltage signal is greater than the reference voltage signal, so as to increase the relay The voltage at the discharge terminal keeps the appliance in a normal operating state.

Optionally, the control module includes: an output frequency reduction control unit, configured to control the servo feed end to reduce the output frequency to reduce the relay when the voltage signal is less than the reference voltage signal The voltage at the discharge terminal keeps the appliance in a normal operating state.

Optionally, the reference voltage signal includes a maximum reference voltage signal and a minimum reference voltage signal, the maximum reference voltage signal is greater than the minimum reference voltage signal, and the control module includes: a first output frequency control unit for if The voltage signal is greater than the maximum reference voltage signal, then the servo feed end is controlled to increase the output frequency to increase the voltage at the discharge end of the relay; the first output frequency control unit is used for if the voltage signal is less than the specified voltage signal. If the minimum reference voltage signal is received, the servo feed end is controlled to reduce the output frequency to reduce the voltage at the discharge end of the relay.

In a third aspect, an embodiment of the present application provides an electronic device, including a processor and a memory, where the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the operation is as described above. The method provided by the first aspect.

In a fourth aspect, an embodiment of the present application provides a readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the method provided in the first aspect above is executed.

Other features and advantages of the present application will be set forth in the description which follows, and, in part, will be apparent from the description, or may be learned by practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description, claims, and drawings.

Description of drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, therefore It should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

1 is a structural block diagram of an electronic device provided by an embodiment of the present application;

FIG. 2 is a flowchart of a relay protection method for a smart home provided by an embodiment of the present application;

FIG. 3 is a structural diagram of a relay protection device for a smart home provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

More and more low-voltage electrical appliances use relays as control components. The relay is actually a switch whose working principle is to control a large current with a small current. The relay can play the role of automatic adjustment, safety protection and conversion circuit in the circuit. , therefore, the present application provides a relay protection method and device for a smart home, which realizes the protection of the relay, and then effectively protects low-voltage electrical appliances. 1 , the electronic device may include: at least one processor 110 , such as a CPU, at least one communication interface 120 , at least one memory 130 and at least one communication bus 140 . Among them, the communication bus 140 is used to realize the direct connection and communication of these components. The communication interface 120 of the device in the embodiment of the present application is used for signaling or data communication with other node devices. The memory 130 may be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The memory 130 may optionally also be at least one storage device located remotely from the aforementioned processor. Computer-readable instructions are stored in the memory 130. When the computer-readable instructions are executed by the processor 110, the electronic device executes the method process shown in FIG. 2 below.

It can be understood that the structure shown in FIG. 1 is only for illustration, and the electronic device 100 may further include more or less components than those shown in FIG. 1 , or have different configurations than those shown in FIG. 1 . Each component shown in FIG. 1 may be implemented in hardware, software, or a combination thereof.

Please refer to FIG. 2. FIG. 2 is a flowchart of a relay protection method for smart homes provided by an embodiment of the application. The method is applied to a relay protection device for smart homes, and includes the following steps:

Step S110: Collect the voltage signal of the discharge terminal of the relay of the electrical appliance.

When collecting the voltage signal at the discharge end of the relay, a plurality of voltage signals at the discharge end of the relay can be collected at a preset collection frequency, and the voltage signal can be determined according to the plurality of voltage signals. For example, the voltage signal at the discharge end of the relay is collected at a collection frequency of 1000 times a minute.

As an embodiment, when a voltage signal is determined according to a plurality of voltage signals, a method of obtaining an average value of the plurality of voltage signals may be adopted, and the obtained average value is determined as a voltage signal to reduce errors.

Since the voltage signal of the discharge terminal of the relay is not fixed at different times, that is to say, the voltage signal of the discharge terminal of the relay is fluctuating, so multiple voltage signals are collected according to the preset collection frequency, so that the accurate determination can be made according to the multiple voltage signals. output voltage signal.

Step S120: Acquire a reference voltage signal of the discharge terminal of the relay when the electrical appliance is in a normal operation state.

The reference voltage signal is a voltage signal that can represent the discharge terminal of the relay when the electrical appliance is in normal operation. Therefore, various methods can be used to obtain it. For example, the first method can be calculated according to the relevant parameters of the electrical appliance. This method can Accurately reflect the voltage signal of the electrical appliance in the rated working state. The second method can be obtained by placing the electrical appliance in a normal operating state and then testing the discharge end of the electrical relay. This method can be used to consider To the data fluctuation of the electrical appliance due to long-term use, it can more comprehensively reflect the voltage signal of the electrical appliance in the normal operating state under different service years.

Step S130: Control the output frequency of the servo feed end according to the reference voltage signal and the voltage signal, so that the electrical appliance is in a normal operation state.

The output of the output end of the servo feed end can change with the input of the input end of the servo feed end. The servo feed end can stop the output immediately after the input end of the input end disappears, which has better controllability. The output end can output high stability output. In addition, the input end and output end of the servo feed end are sensitive to response, so the servo feed end can be controlled for accurate output according to the reference voltage signal and the voltage signal, so as to achieve accurate electrical control. to adjust the operating status.

In the above implementation process, the voltage signal of the relay discharge terminal of the electrical appliance can reflect the operating state of the electrical appliance, so the output frequency of the servo feed terminal can be controlled according to the voltage signal and the reference voltage signal of the relay discharge terminal when the electrical appliance is in a normal operating state, so that the The electrical appliance is in a normal operating state, thereby effectively ensuring the safe operation of the electrical appliance.

As an embodiment, the reference voltage signal can be a value, and when the output frequency of the servo feed end is controlled according to the reference voltage signal and the voltage signal, the servo feed end can be adjusted according to the magnitude of the voltage signal and the reference voltage signal.

When the voltage signal is greater than the reference voltage signal, the servo feed end can be controlled to increase the output frequency to increase the voltage at the discharge end of the relay to keep the electrical appliance in a normal operating state. When the voltage signal is less than the reference voltage signal, the servo feed end can be controlled to reduce the output frequency, so as to reduce the voltage of the relay discharge end so that the electrical appliance is in a normal operation state. Among them, the high voltage signal is the main reason for electrical damage and safety problems. Therefore, only when the voltage signal is greater than the reference voltage signal, the servo feed end can be controlled to increase the output frequency.

In the above implementation process, when the voltage signal is greater than the reference voltage signal, indicating that the voltage is too high, the servo feed end can be controlled to increase the output frequency to increase the voltage at the discharge end of the relay. When the voltage signal is smaller than the reference voltage signal, the servo feed end can be controlled Increase the output frequency to increase the voltage of the discharge terminal of the relay, so that the electrical appliance is in a normal operating state, thereby effectively ensuring the safe operation of the electrical appliance.

As another implementation manner, the reference voltage signal may also be a voltage signal range in which the electrical appliance is in a normal operating state. For example, the reference voltage signal includes a maximum reference voltage signal and a minimum reference voltage signal, and the maximum reference voltage signal is greater than the minimum reference voltage signal. When controlling the output frequency of the servo feeding terminal according to the reference voltage signal and the voltage signal, the following process can be included: if the voltage signal is greater than the maximum reference voltage signal, the servo feeding terminal is controlled to increase the output frequency, so as to increase the voltage of the discharge terminal of the relay so that the electrical appliance is in the Normal operation state; if the voltage signal is less than the minimum reference voltage signal, control the servo feed end to reduce the output frequency to reduce the voltage at the discharge end of the relay so that the electrical appliance is in a normal operation state.

For example, if the voltage signal range is 90-100, the maximum reference voltage signal is 100, and the minimum reference voltage signal is 90. If the voltage signal is 110, the voltage signal is greater than the maximum reference voltage signal, that is, the voltage signal is not in the reference voltage. Within the range indicated by the signal, the servo feed end can be controlled to increase the output frequency and speed up the feed speed. If the voltage signal is 85 and the voltage signal is less than the maximum reference voltage signal, the servo feed end can be controlled to reduce the output frequency and slow down. feed speed, so that the electrical appliance is in a normal operating state.

When the reference voltage signal is in the range of the voltage signal in the normal operation state of the electrical appliance, the output of the servo feed end can be controlled by judging whether the voltage signal is within the voltage signal range of the reference voltage signal, so as to ensure the normal operation of the electrical appliance.

Based on the same inventive concept, an embodiment of the present application also provides a relay protection device 200 for smart home, please refer to FIG. 3 , the device may be a module, a program segment or a code on an electronic device. It should be understood that the relay protection device 200 for smart home in this article corresponds to the above-mentioned embodiment of the method in FIG. 2 , and can perform various steps involved in the embodiment of the method in FIG. 2 , and the specific functions of the relay protection device 200 for smart home can refer to the above. In order to avoid repetition, the detailed description is appropriately omitted here.

Optionally, the relay protection device 200 for smart home includes:

The voltage signal collection module 210 is used to collect the voltage signal of the discharge terminal of the relay of the electrical appliance.

The reference voltage obtaining module 220 is configured to obtain the reference voltage signal of the discharge terminal of the relay when the electrical appliance is in a normal operation state.

The control module 230 is configured to control the output frequency of the servo feed end according to the reference voltage signal and the voltage signal, so as to keep the electrical appliance in a normal operation state.

Optionally, the voltage signal acquisition module 210 includes:

The voltage signal collection unit is used for collecting a plurality of voltage signals at the discharge end of the relay at a preset collection frequency, and determining the voltage signal according to the plurality of voltage signals.

Optionally, the control module 230 includes:

The output frequency increase control unit is used to control the servo feed end to increase the output frequency when the voltage signal is greater than the reference voltage signal, so as to increase the voltage of the discharge end of the relay to keep the electrical appliance in a normal operation state.

Optionally, the control module 230 includes:

The output frequency reduction control unit is used to control the servo feed end to reduce the output frequency when the voltage signal is less than the reference voltage signal, so as to reduce the voltage of the discharge end of the relay so that the electrical appliance is in a normal operation state.

Optionally, the reference voltage signal includes a maximum reference voltage signal and a minimum reference voltage signal, the maximum reference voltage signal is greater than the minimum reference voltage signal, and the control module 230 includes:

The first output frequency control unit is used for controlling the servo feed end to increase the output frequency if the voltage signal is greater than the maximum reference voltage signal, so as to increase the voltage at the discharge end of the relay.

The second output frequency control unit is used for controlling the servo feed end to reduce the output frequency if the voltage signal is smaller than the minimum reference voltage signal, so as to reduce the voltage of the discharge end of the relay.

An embodiment of the present application provides a readable storage medium. When a computer program is executed by a processor, the method process performed by the electronic device in the method embodiment shown in FIG. 2 is executed.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, for the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method, which will not be repeated here.

To sum up, the present application provides a relay protection method and device for smart home, the method includes: collecting a voltage signal of a relay discharge terminal of an electrical appliance; acquiring a reference voltage of the relay discharge terminal when the electrical appliance is in a normal operation state signal; control the output frequency of the servo feed end according to the reference voltage signal and the voltage signal. The voltage signal of the discharge terminal of the relay of the electrical appliance can reflect the operating state of the electrical appliance, so the output frequency of the servo feeding terminal can be controlled according to the voltage signal and the reference voltage signal of the discharge terminal of the relay when the electrical appliance is in normal operation, so that the electrical appliance is in a normal operating state. , and then effectively ensure the safe operation of electrical appliances.

In the embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some communication interfaces, indirect coupling or communication connection of devices or units, which may be in electrical, mechanical or other forms.

In addition, units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

Furthermore, each functional module in each embodiment of the present application may be integrated together to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part.

The above descriptions are merely examples of the present application, and are not intended to limit the protection scope of the present application. For those skilled in the art, various modifications and changes may be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (10)

1. a kind of relay protection method for smart home, is characterized in that, is applied to smart home relay protection device, and described method comprises: Collect the voltage signal of the relay discharge terminal of the electrical appliance; Obtain the reference voltage signal of the discharge terminal of the relay when the electrical appliance is in a normal operation state; The output frequency of the servo feed end is controlled according to the reference voltage signal and the voltage signal, so that the electrical appliance is in a normal operation state. 2. The method according to claim 1, wherein the collecting the voltage signal of the discharge terminal of the relay comprises: Collect a plurality of voltage signals at the discharge end of the relay at a preset collection frequency, and determine the voltage signal according to the plurality of voltage signals. 3. The method according to claim 1, wherein the controlling the output frequency of the servo feed end according to the reference voltage signal and the voltage signal comprises: If the voltage signal is greater than the reference voltage signal, the servo feed end is controlled to increase the output frequency to increase the voltage of the relay discharge end. 4. The method according to claim 1 or 3, wherein the controlling the output frequency of the servo feed end according to the reference voltage signal and the voltage signal, so that the electrical appliance is in a normal operation state, comprises: If the voltage signal is smaller than the reference voltage signal, the servo feed end is controlled to reduce the output frequency, so as to reduce the voltage of the relay discharge end. 5. The method according to claim 1, wherein the reference voltage signal comprises a maximum reference voltage signal and a minimum reference voltage signal, the maximum reference voltage signal is greater than the minimum reference voltage signal, and the reference voltage signal is based on the minimum reference voltage signal. The reference voltage signal and the voltage signal control the output frequency of the servo feed end, including: If the voltage signal is greater than the maximum reference voltage signal, controlling the servo feed end to increase the output frequency to increase the voltage of the relay discharge end; If the voltage signal is smaller than the minimum reference voltage signal, the servo feed end is controlled to reduce the output frequency, so as to reduce the voltage of the relay discharge end. 6. A relay protection device for smart home, wherein the device comprises: The voltage signal acquisition module is used to collect the voltage signal of the relay discharge terminal of the electrical appliance; a reference voltage acquisition module, configured to acquire the reference voltage signal of the discharge terminal of the relay when the electrical appliance is in a normal operation state; The control module is used for controlling the output frequency of the servo feed end according to the reference voltage signal and the voltage signal, so that the electrical appliance is in a normal operation state. 7. The device according to claim 6, wherein the voltage signal acquisition module comprises: The voltage signal collection unit is configured to collect a plurality of voltage signals at the discharge end of the relay at a preset collection frequency, and determine the voltage signal according to the plurality of voltage signals. 8. The apparatus according to claim 6, wherein the control module comprises: The output frequency increasing control unit is configured to control the servo feed end to increase the output frequency when the voltage signal is greater than the reference voltage signal, so as to increase the voltage of the relay discharge end. 9. An electronic device, characterized in that it comprises a processor and a memory, wherein the memory stores computer-readable instructions, when the computer-readable instructions are executed by the processor, the operation as claimed in claims 1 to 10 is performed. The method of any one of 5. 10. A readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the method according to any one of claims 1 to 5 is executed.

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