A power supply system and power supply method based on smart meter

Abstract

The present invention provides a power supply system and power supply method based on a smart meter, which can determine the standby time period of the controlled electrical appliance by monitoring the power curve of the controlled electrical appliance, and then automatically set the power-off time period of the controlled electrical appliance, automatically cut off the power supply to the controlled electrical appliance during the power-off time period, and automatically supply power to the controlled electrical appliance during the working time period. The present application can automatically cut off the power supply when the controlled electrical appliance is on standby, effectively reducing the standby energy consumption of the controlled electrical appliance, reducing electromagnetic radiation, and reducing the safety hazard of electrical fire. During the working time period, power can be automatically supplied to the controlled electrical appliance, which is convenient for users to use and improves the user experience. At the same time, the control method can continuously update the power-off time period of the controlled electrical appliance by continuously collecting the power curve of the controlled electrical appliance, without the need for user adjustment, which greatly improves the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of smart electric meters, and in particular to a power supply system and a power supply method based on a smart electric meter. Background Art

[0002] With the continuous development of science and technology, household appliances have gradually become an indispensable part of people's daily lives. Household appliances such as televisions, refrigerators, microwave ovens, air conditioners, etc. have greatly improved the convenience and comfort of life. However, with the popularity of these appliances, the energy consumption and potential safety hazards of household appliances in standby mode have gradually emerged.

[0003] Most existing sockets and power management methods cannot completely cut off the power supply when household appliances are in standby mode. Even if the device is in the "off" state, many household appliances are still in standby mode, which means that they still consume a certain amount of electricity. According to research, standby energy consumption accounts for 10% to 15% of the total household energy consumption, especially for household appliances such as televisions, computers, and stereos. Even when they are not in obvious working state, they still need a certain amount of power to maintain their background operations, such as receiving remote control signals or performing system updates. Long-term standby of household appliances not only wastes electricity, but also generates a certain amount of electromagnetic radiation in standby mode. Although the radiation intensity is usually low, long-term exposure to electromagnetic radiation may have potential effects on human health, especially for children, the elderly or people who are sensitive to radiation.

[0004] In addition, keeping household appliances connected in standby mode may cause safety hazards such as electrical fires, especially when the wires are aging or the equipment is of poor quality. When electrical equipment is continuously powered on, the risk of failure or wire overheating increases significantly.

[0005] Patent CN102856740A discloses a smart power-saving socket for household appliances. When the current in the circuit of the household appliance becomes smaller due to standby or shutdown, the power supply can be automatically cut off. If the user needs to turn on the household appliance again, the user needs to manually press the power button on the socket. Although this setting can also play the role of automatic power off, some household appliances are used frequently. This setting requires pressing the power button every time they are used, which greatly reduces the user experience. In decoration, many sockets are designed in the corners of the wall, located at the rear end of the household appliances. It is difficult for users to frequently operate the power button. If the household appliances are placed far away from the sockets, it will occupy valuable indoor space and be unsightly.

[0006] Therefore, it is very necessary to develop a power supply system that can automatically cut off the power when the household appliances are on standby and can be convenient for users to use when the household appliances are turned on. Summary of the invention

[0007] In view of this, the present invention aims to propose a power supply system and power supply method based on a smart meter to solve the problem in the prior art that the power cannot be automatically cut off when the household appliance is in standby mode and the user cannot use the household appliance conveniently when the household appliance is turned on.

[0008] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0009] A power supply method based on a smart meter comprises the following steps:

[0010] S1: At each interval of t0, the voltage and current values ​​of the controlled electrical appliance are detected, the power value of the controlled electrical appliance is obtained according to the voltage and current values, and a power curve is generated, and then enter S2;

[0011] S2: According to the power curve of the controlled electrical appliance, determine the time points of t1 and t2, and enter S3;

[0012] S3: Set t3 according to t2 and enter S4;

[0013] S4: Adjust the power supply state to the controlled electrical appliance according to t3 and enter S1;

[0014] Among them, t0 is the time interval for sampling the voltage and current values ​​of the controlled electrical appliance, t1 is the working time period of the controlled electrical appliance, t2 is the standby time period of the controlled electrical appliance, t3 is the power-off time period of the controlled electrical appliance, and t3≤t2.

[0015] This setting can automatically cut off the power supply when the controlled electrical appliance is in standby mode, effectively reducing the standby energy consumption of the controlled electrical appliance, reducing electromagnetic radiation, and reducing the safety hazard of electrical fire. During the working hours, it can automatically supply power to the controlled electrical appliance, which is convenient for users to use and improves the user experience. At the same time, this control method can continuously update the power-off time period of the controlled electrical appliance by continuously collecting the power curve of the controlled electrical appliance, without the need for user adjustment, greatly improving the user experience.

[0016] Furthermore, according to the power curve of the controlled electrical appliance, the lowest power value is selected as the standby power value of the controlled electrical appliance, and the time points of t1 and t2 are determined according to the standby power value and the power curve.

[0017] This setting can accurately identify when the controlled electrical appliances enter the standby state, which helps to improve the accuracy of automatic power-off and avoid misjudgment; the standby power of different electrical appliances may be different, and by judging their power curves, it can be applied to different electrical appliances, greatly expanding the scope of application.

[0018] Furthermore, if t2≥t4, t3 is set within t2, wherein t4 is the standby time threshold of the controlled electrical appliance.

[0019] This setting can reduce the working time of the controlled electrical appliances in standby mode, ensure that the controlled electrical appliances are powered off in time when not in use, and avoid unnecessary waste of electricity.

[0020] Furthermore, the user can set t4 as needed.

[0021] Different electrical appliances have different standby requirements. Users can flexibly adjust t4 according to the characteristics and usage scenarios of the controlled appliances, so that the system can adapt to a variety of usage environments.

[0022] The present application also provides a power supply system based on a smart meter, which is used in the power supply method described above, and includes a smart meter and a smart socket, wherein the smart meter and the smart socket can communicate with each other;

[0023] The smart socket is used to provide electric energy to the controlled electrical appliances, and the smart meter can adjust the power supply state of the smart socket to the controlled electrical appliances;

[0024] The smart socket can measure the voltage and current values ​​of the controlled electrical appliance, and feed the measured voltage and current values ​​back to the smart meter. The smart meter can calculate the power value of the controlled electrical appliance according to the voltage and current values ​​of the controlled electrical appliance, and generate a power curve of the controlled electrical appliance.

[0025] The smart electric meter can determine the time points of t1 and t2 according to the power curve, set t3 according to t2, and adjust the power supply status to the controlled electrical appliance according to t3.

[0026] This setting can realize the linkage control among the smart meter, smart socket and controlled appliances. When the controlled appliance enters the power-off period, the smart socket can automatically stop supplying power to the controlled appliance. When the controlled appliance enters the working period, the smart socket can automatically supply power to the controlled appliance. The smart meter can continuously update the power-off period of the controlled appliance through the power curve of the controlled appliance, without the need for user adjustment, which greatly improves the user experience.

[0027] Furthermore, the smart meter comprises:

[0028] A communication module, used for communicating with the smart socket;

[0029] A storage module, used for storing information fed back by the communication module;

[0030] A display module, including a touch screen, for displaying the operation information of the smart meter and for inputting control information;

[0031] Clock module, used to feedback the current time and the operation time of the smart meter;

[0032] The power module includes a transformer and a voltage regulator chip, which is used to provide stable power for the smart meter;

[0033] A calculation module is used to calculate the power value of the controlled electrical appliance according to the voltage and current values ​​thereof, generate a power curve of the controlled electrical appliance, determine the time points of t1 and t2 according to the power curve, and set t3 according to t2;

[0034] The control module is used to adjust the power supply status of the smart socket to the controlled electrical appliance according to t3.

[0035] This setting can automatically cut off the power supply when the controlled electrical appliances are in standby mode, effectively reducing the standby energy consumption of the controlled electrical appliances, reducing electromagnetic radiation, and reducing the safety hazard of electrical fires. During working hours, it can automatically supply power to the controlled electrical appliances, making it convenient for users to use and improving the user experience.

[0036] Furthermore, the smart socket includes:

[0037] The detection unit, including voltage transformer and current transformer, can collect the voltage and current values ​​of the controlled electrical appliance in real time, convert them into digital signals through A / D converter and send them to the control module for processing;

[0038] A communication unit, used for communicating with a smart meter;

[0039] A power supply unit, including a relay, for controlling the on / off of a circuit between the smart socket and the controlled electrical appliance;

[0040] A power supply unit, including a transformer and a voltage regulator chip, is used to provide stable power to the smart socket;

[0041] The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter.

[0042] This setting facilitates the automatic control of the controlled electrical appliances and reduces standby energy consumption.

[0043] Furthermore, the smart socket is provided with a reset button, and the reset button is used to adjust the working state of the power supply unit.

[0044] When the controlled appliance is in a power-off period, the user can control the smart socket to supply power to the controlled appliance through the reset button, which is convenient for the user.

[0045] Furthermore, the smart socket is provided with an alarm indicator light. When entering the power off time period, the alarm indicator light starts to flash, and after flashing continuously for t5 time, the alarm indicator light goes out; wherein t5 is the flashing time of the alarm indicator light.

[0046] The alarm indicator light can indicate the working status of the smart socket in real time. Users can use the alarm indicator light to understand whether the smart socket is in a power outage period, which improves the user experience.

[0047] Furthermore, the communication mode between the communication module and the communication unit is wireless communication.

[0048] Wireless communication reduces the complexity of wiring, reduces installation costs and time, and allows users to deploy equipment more conveniently. It has strong adaptability and can meet the needs of various application scenarios.

[0049] Compared with the prior art, the power supply system and power supply method based on smart meter described in the present invention have the following advantages:

[0050] 1) It can automatically cut off the power supply when the controlled electrical appliances are in standby mode, effectively reducing the standby energy consumption of the controlled electrical appliances, reducing electromagnetic radiation, and reducing the potential safety hazards of electrical fires. During the working hours, it can automatically supply power to the controlled electrical appliances, which is convenient for users and improves the user experience;

[0051] 2) By continuously collecting the power curve of the controlled electrical appliances, the power-off time period of the controlled electrical appliances can be continuously updated without user adjustment, which greatly improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 The present invention is a flowchart of a power supply method based on a smart meter according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0054] Example 1

[0055] As shown in Figure 1, a power supply method based on a smart meter includes the following steps:

[0056] S1: At each interval of t0, the voltage and current values ​​of the controlled electrical appliance are detected, the power value of the controlled electrical appliance is obtained according to the voltage and current values, and a power curve is generated, and then enter S2;

[0057] S2: According to the power curve of the controlled electrical appliance, determine the time points of t1 and t2, and enter S3;

[0058] S3: Set t3 according to t2 and enter S4;

[0059] S4: Adjust the power supply state to the controlled electrical appliance according to t3 and enter S1;

[0060] Among them, t0 is the time interval for sampling the voltage and current values ​​of the controlled electrical appliance, t1 is the working time period of the controlled electrical appliance, t2 is the standby time period of the controlled electrical appliance, t3 is the power-off time period of the controlled electrical appliance, and t3≤t2.

[0061] The present application can determine the standby time period of the controlled electrical appliance by monitoring the power curve of the controlled electrical appliance, and then automatically set the power-off time period of the controlled electrical appliance, automatically cut off the power supply to the controlled electrical appliance during the power-off time period, and automatically supply power to the controlled electrical appliance during the working time period. This setting can automatically cut off the power supply when the controlled electrical appliance is on standby, effectively reducing the standby energy consumption of the controlled electrical appliance, reducing electromagnetic radiation, and reducing the safety hazard of electrical fire. During the working time period, power can be automatically supplied to the controlled electrical appliance, which is convenient for users to use and improves the user experience. At the same time, this control method can continuously update the power-off time period of the controlled electrical appliance by continuously collecting the power curve of the controlled electrical appliance, without the need for user adjustment, thereby greatly improving the user experience.

[0062] On the other hand, by setting t3≤t2, the use time of the controlled electrical appliance can be extended, ensuring that the user can use the controlled electrical appliance normally to the greatest extent.

[0063] As a preferred example of the present application, according to the power curve of the controlled electrical appliance, the lowest power value is selected as the standby power value of the controlled electrical appliance, and the time points of t1 and t2 are determined according to the standby power value and the power curve.

[0064] Specifically, this setting can accurately identify when the controlled electrical appliance enters the standby state, which helps to improve the accuracy of automatic power-off and avoid misjudgment; the standby power of different electrical appliances may be different, and by judging their power curves, it can be applied to different electrical appliances, greatly expanding the scope of application.

[0065] Preferably, the user can set the standby power value as needed.

[0066] As a preferred example of the present application, if t2≥t4, t3 is set within t2, wherein t4 is the standby time threshold of the controlled electrical appliance.

[0067] Specifically, this setting can reduce the working time of the controlled electrical appliances in the standby state, ensure that the controlled electrical appliances are powered off in time when not in use, and avoid unnecessary waste of electricity.

[0068] As a preferred example of the present application, the user can set t4 as needed.

[0069] Specifically, different electrical appliances have different standby requirements. Users can flexibly adjust t4 according to the characteristics and usage scenarios of the controlled appliances, so that the system can adapt to a variety of usage environments and reduce the standby time of the controlled appliances when not in use, thereby reducing energy consumption and saving electricity bills.

[0070] The present application also provides a power supply system based on a smart meter, which is used in the power supply method described above, and includes a smart meter and a smart socket, wherein the smart meter and the smart socket can communicate with each other;

[0071] The smart socket is used to provide electric energy to the controlled electrical appliances, and the smart meter can adjust the power supply state of the smart socket to the controlled electrical appliances;

[0072] The smart socket can measure the voltage and current values ​​of the controlled electrical appliance, and feed the measured voltage and current values ​​back to the smart meter. The smart meter can calculate the power value of the controlled electrical appliance according to the voltage and current values ​​of the controlled electrical appliance, and generate a power curve of the controlled electrical appliance.

[0073] The smart electric meter can determine the time points of t1 and t2 according to the power curve, set t3 according to t2, and adjust the power supply status to the controlled electrical appliance according to t3.

[0074] Specifically, this setting can realize the linkage control among the smart meter, smart socket and controlled appliances. When the controlled appliance enters the power off time period, the smart socket can automatically stop supplying power to the controlled appliance. When the controlled appliance enters the working time period, the smart socket can automatically supply power to the controlled appliance. The smart meter can continuously update the power off time period of the controlled appliance through the power curve of the controlled appliance, without the need for user adjustment, greatly improving the user experience.

[0075] As a preferred example of the present application, the smart meter includes:

[0076] A communication module, used for communicating with the smart socket;

[0077] A storage module, used for storing information fed back by the communication module;

[0078] A display module, including a touch screen, for displaying the operation information of the smart meter and for inputting control information;

[0079] Clock module, used to feedback the current time and the operation time of the smart meter;

[0080] The power module includes a transformer and a voltage regulator chip, which is used to provide stable power for the smart meter;

[0081] A calculation module is used to calculate the power value of the controlled electrical appliance according to the voltage and current values ​​thereof, generate a power curve of the controlled electrical appliance, determine the time points of t1 and t2 according to the power curve, and set t3 according to t2;

[0082] The control module is used to adjust the power supply status of the smart socket to the controlled electrical appliance according to t3.

[0083] Specifically, the touch display screen provides an intuitive operating interface, allowing users to easily view operating information and input control commands. This setting can automatically cut off the power supply when the controlled electrical appliances are in standby mode, effectively reducing the standby energy consumption of the controlled electrical appliances, reducing electromagnetic radiation, and reducing the safety hazards of electrical fires. During working hours, it can automatically supply power to the controlled electrical appliances, making it convenient for users to use and improving the user experience.

[0084] Preferably, the results output by the calculation module are also stored in the storage module.

[0085] Preferably, the clock module includes a real-time clock chip that can provide a stable clock reference and maintain time accuracy even in the event of a power outage. The clock module can also communicate with the Internet through the communication module to perform time calibration. The clock module can record operation logs and the time of abnormal events to help users diagnose problems and arrange maintenance work.

[0086] Preferably, the power module also includes a battery, and when the power grid fails, the battery can supply power to the smart meter.

[0087] As a preferred example of the present application, the smart socket includes:

[0088] The detection unit, including voltage transformer and current transformer, can collect the voltage and current values ​​of the controlled electrical appliance in real time, convert them into digital signals through A / D converter and send them to the control module for processing;

[0089] A communication unit, used for communicating with a smart meter;

[0090] A power supply unit, including a relay, for controlling the on / off of a circuit between the smart socket and the controlled electrical appliance;

[0091] A power supply unit, including a transformer and a voltage regulator chip, is used to provide stable power to the smart socket;

[0092] The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter.

[0093] Specifically, the smart socket can control the power supply status to the controlled electrical appliances according to the instructions of the smart meter. This setting facilitates the automatic control of the controlled electrical appliances and reduces standby energy consumption.

[0094] As a preferred example of the present application, the smart socket is provided with a reset button, and the reset button is used to adjust the working state of the power supply unit.

[0095] Specifically, when the controlled electrical appliance is in a power-off period, the user can control the smart socket to supply power to the controlled electrical appliance through a reset button, which is convenient for the user.

[0096] As a preferred example of the present application, the smart socket is provided with an alarm indicator light. When entering the power off period, the alarm indicator light starts to flash, and after flashing continuously for t5 time, the alarm indicator light goes out; wherein t5 is the flashing time of the alarm indicator light.

[0097] Specifically, the alarm indicator light can indicate the working status of the smart socket in real time. The user can understand whether the smart socket is in a power-off period through the alarm indicator light, thereby improving the user experience.

[0098] As a preferred example of the present application, the communication method between the communication module and the communication unit is wireless communication.

[0099] Specifically, wireless communication reduces the complexity of wiring, reduces installation costs and time, allows users to deploy equipment more conveniently, has strong adaptability, and can meet the needs of a variety of application scenarios.

[0100] The power supply system and method based on smart meters described in the present application have the following advantages: 1) It can automatically cut off the power supply when the controlled electrical appliance is in standby mode, effectively reducing the standby energy consumption of the controlled electrical appliance, reducing electromagnetic radiation, and reducing the safety hazard of electrical fire. During the working period, it can automatically supply power to the controlled electrical appliance, which is convenient for users to use and improves the user experience; 2) By continuously collecting the power curve of the controlled electrical appliance, the power-off time period of the controlled electrical appliance can be continuously updated without the need for user adjustment, which greatly improves the user experience; 3) It can accurately identify when the controlled electrical appliance enters the standby state, which helps to improve the accuracy of automatic power-off and avoid misjudgment; 4) It can be applied to different electrical appliances, greatly expanding the scope of application.

[0101] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A power supply method based on a smart meter, characterized in that: Includes steps: S1: At each interval of t0, the voltage and current values ​​of the controlled electrical appliance are detected, the power value of the controlled electrical appliance is obtained according to the voltage and current values, and a power curve is generated, and then enter S2; S2: According to the power curve of the controlled electrical appliance, determine the time points of t1 and t2, and enter S3; S3: Set t3 according to t2 and enter S4; S4: Adjust the power supply state to the controlled electrical appliance according to t3 and enter S1; Among them, t0 is the time interval for sampling the voltage and current values ​​of the controlled electrical appliance, t1 is the working time period of the controlled electrical appliance, t2 is the standby time period of the controlled electrical appliance, t3 is the power-off time period of the controlled electrical appliance, and t3≤t2.

2. The power supply method based on smart meter according to claim 1, characterized in that: According to the power curve of the controlled electrical appliance, the lowest power value is selected as the standby power value of the controlled electrical appliance, and the time points of t1 and t2 are determined according to the standby power value and the power curve.

3. The power supply method based on smart meter according to claim 2, characterized in that: If t2≥t4, t3 is set within t2, where t4 is the standby time threshold of the controlled electrical appliance.

4. The power supply method based on smart meter according to claim 3, characterized in that: Users can set t4 as needed.

5. A power supply system based on a smart meter, used in the power supply method according to claim 1, characterized in that: It includes a smart meter and a smart socket, and the smart meter and the smart socket can communicate with each other; The smart socket is used to provide electric energy to the controlled electrical appliances, and the smart meter can adjust the power supply state of the smart socket to the controlled electrical appliances; The smart socket can measure the voltage and current values ​​of the controlled electrical appliance, and feed the measured voltage and current values ​​back to the smart meter. The smart meter can calculate the power value of the controlled electrical appliance according to the voltage and current values ​​of the controlled electrical appliance, and generate a power curve of the controlled electrical appliance. The smart electric meter can determine the time points of t1 and t2 according to the power curve, set t3 according to t2, and adjust the power supply status to the controlled electrical appliance according to t3.

6. The power supply system based on smart meter according to claim 5, characterized in that: The smart electric meter comprises: A communication module, used for communicating with the smart socket; A storage module, used for storing information fed back by the communication module; A display module, including a touch screen, for displaying the operation information of the smart meter and for inputting control information; Clock module, used to feedback the current time and the operation time of the smart meter; Power module, used to provide stable power to smart meters; A calculation module is used to calculate the power value of the controlled electrical appliance according to the voltage and current values ​​thereof, generate a power curve of the controlled electrical appliance, determine the time points of t1 and t2 according to the power curve, and set t3 according to t2; The control module is used to adjust the power supply status of the smart socket to the controlled electrical appliance according to t3.

7. The power supply system based on smart meter according to claim 6, characterized in that: The smart socket comprises: The detection unit, including a voltage transformer and a current transformer, can collect the voltage and current values ​​of the controlled electrical appliance in real time, convert them into digital signals through an A / D converter and send them to the control module for processing; the communication unit is used to communicate with the smart meter; A power supply unit, used to control the on / off of the circuit between the smart socket and the controlled electrical appliance; A power supply unit, used to provide stable power to the smart socket; The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter.

8. The power supply system based on smart meter according to claim 7, characterized in that: The smart socket is provided with a reset button, and the reset button is used to adjust the working state of the power supply unit.

9. The power supply system based on smart meter according to claim 7, characterized in that: The smart socket is provided with an alarm indicator light. When entering the power-off time period, the alarm indicator light starts to flash, and after flashing continuously for t5 time, the alarm indicator light goes out; wherein t5 is the flashing time of the alarm indicator light.

10. The power supply system based on smart meter according to claim 7, characterized in that: The communication mode between the communication module and the communication unit is wireless communication.

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