Intelligent control system and control method of circuit

Abstract

According to the intelligent control system of the circuit, the control method and the intelligent electric meter, the measured circuit voltage and current values are compared with the set threshold values, the abnormal state of the circuit can be found in time, the power supply state of the intelligent socket is automatically adjusted, the influence of unstable power on electrical equipment is reduced, and the safety of the electrical equipment is improved. Meanwhile, the intelligent electric meter compares the voltage and current values of the controlled electric appliance with historical average values, so that the abnormal state of the controlled electric appliance can be found in time, and the power supply state of the intelligent socket to the controlled electric appliance can be automatically adjusted. Further damage or electrical safety accidents of the controlled electric appliance are avoided, and the safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of smart electric meters, and in particular to an intelligent control system and a control method for a circuit. Background Art

[0002] In modern homes and industrial environments, the voltage and current in circuits often become unstable due to a variety of reasons, such as unstable power supply, equipment failure, wiring problems, etc. Unstable voltage and current changes may cause damage to controlled electrical appliances and industrial equipment, and even cause serious safety accidents such as fires. For controlled electrical appliances, long-term unstable voltage or current will cause rapid wear of electrical components, shorten their service life, and even cause short circuits or fires due to overload of internal circuits of electrical appliances.

[0003] At the same time, when an electrical device fails, abnormal changes in its current and voltage are often signals of potential danger. Since it is difficult for ordinary household users to detect changes in voltage or current in a timely and effective manner, it may cause further damage to the electrical equipment and miss the best time for maintenance, which in turn may cause safety hazards. Therefore, timely monitoring and early warning of current and voltage changes in the circuit are crucial to ensuring the safe operation of household appliances and power systems.

[0004] For example, patent CN104834297A discloses a remote control system and method for controlled electrical appliances based on an IoT smart meter 1. Specifically, it discloses that users can use smart terminals to obtain the power consumption information and working status of controlled electrical appliances anytime and anywhere, and remotely control the controlled electrical appliances to ensure energy conservation, emission reduction and reasonable power consumption under the premise of safe power consumption. However, it does not disclose early warning of faults by real-time monitoring of circuit voltage and current changes. In order to improve the safety of household appliances and reduce the probability of accidents such as fire, it is urgent to develop an intelligent appliance control system with integrated current and voltage monitoring and fault warning functions, which can detect electrical parameters in the circuit in real time, automatically identify abnormal conditions, and reduce potential safety risks through alarms or automatic power-off. Summary of the invention

[0005] In view of this, the present invention aims to propose an intelligent control system and control method for a circuit to solve the problem in the prior art that the stability of circuits and electrical equipment cannot be detected in real time to avoid electrical safety accidents.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] An intelligent control system for a circuit, comprising: an intelligent electric meter and an intelligent socket, wherein the intelligent electric meter and the intelligent socket can communicate with each other;

[0008] The smart meter is used to measure and record the voltage and current values ​​in the circuit, and compare the measured voltage and current values ​​with the voltage and current thresholds, and adjust the power supply state to the smart socket according to the comparison result;

[0009] The smart socket is used to provide electric energy to the controlled electrical appliance, and 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 compares the voltage and current values ​​of the controlled electrical appliance with the historical average value, and adjusts the power supply status of the smart socket to the controlled electrical appliance according to the comparison result.

[0010] The intelligent control system of the circuit described in the present application can promptly detect the abnormal state of the circuit and automatically adjust the power supply state to the smart socket, which helps to reduce the impact of unstable power on electrical equipment, extend the service life of electrical equipment, and avoid electrical safety accidents; it can promptly detect the abnormal state of the controlled electrical appliance and automatically adjust the power supply state of the smart socket to the controlled electrical appliance, avoid further damage to the controlled electrical appliance or electrical safety accidents, and improve safety.

[0011] Furthermore, the smart meter comprises:

[0012] The detection module, including the voltage transformer and the current transformer, can collect the voltage and current signals in the circuit in real time, convert them into digital signals through the A / D converter and send them to the control module for processing;

[0013] A communication module, used for communicating with the smart socket;

[0014] A storage module, used to store information fed back by the detection module and the communication module;

[0015] The on-off module includes a plurality of relays for controlling the on-off of the circuit between the smart meter and the smart socket;

[0016] A display module, including a touch screen, for displaying the operation information of the smart meter and for inputting control information;

[0017] Clock module, used to feedback the current time and the operation time of the smart meter;

[0018] The power module includes a transformer and a voltage regulator chip, which is used to provide stable power for the smart meter;

[0019] The control module is used to compare the voltage and current values ​​fed back by the detection module with the voltage and current thresholds recorded in the storage module, and adjust the working state of the smart meter according to the comparison results; and is used to compare the voltage and current values ​​fed back by the smart socket with the historical average values ​​in the storage module, and adjust the working state of the smart socket according to the comparison results.

[0020] This setting can cut off the power supply in time when the voltage or current of the circuit is abnormal, avoiding the impact on household appliances, extending the service life of household appliances, and reducing electrical safety accidents.

[0021] Furthermore, the smart socket includes:

[0022] 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;

[0023] A communication unit, used for communicating with a smart meter;

[0024] A power supply unit, including a relay, for controlling the on / off of a circuit between the smart socket and the controlled electrical appliance;

[0025] A power supply unit, including a transformer and a voltage regulator chip, is used to provide stable power to the smart socket;

[0026] The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter.

[0027] With this setting, when a controlled electrical appliance fails, the smart meter can control the corresponding smart socket to stop supplying power to the controlled electrical appliance, greatly improving safety.

[0028] Furthermore, the communication mode between the communication module and the communication unit is wireless communication.

[0029] Wireless communication reduces the complexity of wiring, reduces installation costs and time, and users can deploy equipment more conveniently.

[0030] Furthermore, the smart meter is provided with a first alarm indicator light. After the on-off module is turned off, the first alarm indicator light comes on to remind the user; the smart socket is provided with a second alarm indicator light. After the power supply unit is turned off, the second alarm indicator light comes on to remind the user.

[0031] The first alarm indicator light and the second alarm indicator light can provide timely visual feedback to the user when the circuit status changes, helping the user to quickly understand the working status of the equipment and reduce the risk of equipment damage or safety accidents.

[0032] Furthermore, when the smart meter detects that the voltage and current status of the circuit are abnormal, it can send an alarm message to the power supply company and the smart terminal; when the smart meter detects that the voltage and current status of the controlled electrical appliance are abnormal, it can send an alarm message to the smart terminal.

[0033] Sending alarm information to power supply companies can help them understand the operating status of the power grid in a timely manner, deal with potential safety hazards in a timely manner, and ensure the safe and stable operation of the power system. Sending alarm information to smart terminals enables users to monitor circuit status through mobile devices, helping users take measures before serious equipment failures occur, thereby reducing economic losses caused by equipment damage or power failures.

[0034] The present application also provides an intelligent control method of a circuit, which is used in the aforementioned control system, comprising the steps of:

[0035] S1: Detect and determine whether the voltage and current status of the circuit are normal. If not, the smart meter stops supplying power to the smart socket and enters S3. If yes, enter S2;

[0036] S2: Detect and determine whether the voltage and current status of the controlled electrical appliance are normal. If not, the smart socket stops supplying power to the controlled electrical appliance. If yes, enter S1;

[0037] S3: Detect and determine whether the voltage and current status of the circuit are normal. If so, the smart meter supplies power to the smart socket and enters S1. If not, enter S3.

[0038] This method can detect abnormal situations in a timely manner and ensure the stability and safety of the power system by continuously detecting the voltage and current status of the circuit and the controlled electrical appliances.

[0039] Further, step S1 includes:

[0040] S11: Sample the voltage and current values ​​of the circuit at every interval of t0, and enter S12;

[0041] S12: Determine whether U1<U2<U3. If so, the circuit voltage is normal and enter S13. If not, enter S14.

[0042] S13: Determine whether I2 < I3. If so, the current of the circuit is normal and the process goes to S2. If not, the process goes to S15.

[0043] S14: Determine whether t2>t1, if yes, the circuit state is abnormal, go to S16, if no, go to S13;

[0044] S15: Determine whether t4>t3, if so, the circuit state is abnormal, enter S16, if not, enter S2;

[0045] S16: the smart meter stops supplying power to the smart socket and enters S3;

[0046] Among them, U1 is the lower threshold of the circuit voltage, U2 is the actual measured value of the circuit voltage, U3 is the upper threshold of the circuit voltage, I2 is the actual measured value of the circuit current, I3 is the upper threshold of the circuit current, t0 is the time interval for sampling the circuit voltage and current, t1 is the upper threshold of the circuit voltage abnormal time, t2 is the actual measured value of the circuit voltage abnormal time, t3 is the upper threshold of the circuit current abnormal time, and t4 is the actual measured value of the circuit current abnormal time.

[0047] This setting can quickly identify abnormal conditions in the circuit and cut off the power supply in time to ensure the normal operation of the equipment and the safety of the users. By setting the time threshold for detection, it can avoid misjudgment caused by instantaneous circuit fluctuations and improve the accuracy of control.

[0048] Further, step S2 includes:

[0049] S21: At every interval of t5, the voltage and current values ​​of the controlled electrical appliance are sampled and the process proceeds to S22;

[0050] S22: Determine whether If yes, the voltage of the controlled electrical appliance is positive.

[0051] If yes, go to S23; if no, go to S24;

[0052] S23: Determine whether If yes, the current of the controlled electrical appliance is normal.

[0053] Go to S1, if not, go to S25;

[0054] S24: Determine whether t8>t7. If so, the state of the controlled electrical appliance is abnormal, and enter S26. If not, enter S23.

[0055] S25: Determine whether t 10 > t9, if yes, the state of the controlled electrical appliance is abnormal, and the process goes to S26, if no, the process goes to S1;

[0056] S26: The smart socket stops supplying power to the controlled electrical appliance;

[0057] Among them, U4 is the average voltage value of the controlled appliance in the T time period before sampling. The user can select any period before the current sampling as the T time period according to the historical records. U5 is the actual measured value of the voltage of the controlled appliance, I5 is the actual measured value of the current of the controlled appliance, I4 is the average current value of the controlled appliance in the T time period before sampling, α is the threshold value of the voltage deviation of the controlled appliance, β is the threshold value of the current deviation of the controlled appliance, t5 is the time interval for sampling the voltage and current of the controlled appliance, t7 is the upper limit threshold value of the abnormal voltage time of the controlled appliance, t8 is the actual measured value of the abnormal voltage time of the controlled appliance, t9 is the upper limit threshold value of the abnormal current time of the controlled appliance, t 10 It is the actual measured value of the abnormal current time of the controlled electrical appliance.

[0058] This setting can effectively reduce the probability of failure of controlled electrical appliances and ensure the normal operation of the equipment and the safety of users.

[0059] Further, step S3 includes:

[0060] S31: Sample the voltage and current values ​​of the circuit at every interval of t0, and enter S32;

[0061] S32: Determine whether U1<U2<U3, if so, the circuit voltage is normal, and enter S33, if not, enter S34;

[0062] S33: Determine whether I2 < I3. If so, the current of the circuit is normal, the smart meter 1 supplies power to the smart socket, and enters S1. If not, enter S35.

[0063] S34: Determine whether t2>t1, if yes, the circuit voltage is abnormal, go to S31, if no, go to S33;

[0064] S35: Determine whether t4>t3. If so, the current in the circuit is abnormal and enters S31. If not, the smart meter supplies power to the smart socket and enters S1.

[0065] After the smart meter stops supplying power to the smart socket, it will cyclically detect the status of the circuit and supply power to the smart socket in time after the circuit returns to normal. There is no need for manual adjustment by the user, which enhances the system's automation level and improves the user experience.

[0066] Compared with the prior art, the intelligent control system and control method of the circuit described in the present invention have the following advantages:

[0067] 1) It can detect abnormal status of the circuit in time and automatically adjust the power supply status to the smart socket, which helps to reduce the impact of unstable power on electrical equipment, extend the service life of electrical equipment, and avoid electrical safety accidents; it can detect abnormal status of controlled electrical appliances in time and automatically adjust the power supply status of the smart socket to the controlled electrical appliances, avoid further damage to the controlled electrical appliances or electrical safety accidents, and improve safety.

[0068] 2) After the smart meter stops supplying power to the smart socket, the circuit status is detected cyclically to ensure that the circuit is powered again after returning to normal, thereby enhancing the automation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 The figure is a schematic diagram of the principle of the circuit intelligent control system described in the embodiment of the present invention.

[0070] Description of reference numerals:

[0071] 1. Smart electric meter; 11. First alarm indicator light; 2. Smart socket; 21. Second alarm indicator light; 3. Controlled electrical appliances. DETAILED DESCRIPTION

[0072] 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.

[0073] Example 1

[0074] like Figure 1 As shown, an intelligent control system of a circuit includes: a smart meter 1 and a smart socket 2, and the smart meter 1 and the smart socket 2 can communicate with each other;

[0075] The smart meter 1 is used to measure and record the voltage and current values ​​in the circuit, and compare the measured voltage and current values ​​with the voltage and current thresholds, and adjust the power supply state to the smart socket 2 according to the comparison result;

[0076] The smart socket 2 is used to provide electrical energy to the controlled electrical appliance 3, and can measure the voltage and current values ​​of the controlled electrical appliance 3, and feed back the measured voltage and current values ​​to the smart meter 1. The smart meter 1 compares the voltage and current values ​​of the controlled electrical appliance 3 with the historical average values, and adjusts the power supply status of the smart socket 2 to the controlled electrical appliance 3 according to the comparison result.

[0077] The intelligent control system of the circuit described in the present application, the smart meter 1 can detect the abnormal state of the circuit in time by comparing the measured circuit voltage and current values ​​with the set threshold values, and automatically adjust the power supply state to the smart socket 2, which helps to reduce the impact of unstable power on electrical equipment, extend the service life of electrical equipment, and avoid electrical safety accidents. At the same time, the smart meter 1 can detect the abnormal state of the controlled electrical appliance 3 in time by comparing the voltage and current values ​​of the controlled electrical appliance 3 with the historical average values, and automatically adjust the power supply state of the smart socket 2 to the controlled electrical appliance 3, thereby avoiding further damage to the controlled electrical appliance 3 or electrical safety accidents, thereby improving safety.

[0078] Preferably, the smart electric meter 1 is connected to an external power grid through a line.

[0079] As a preferred example of the present application, the smart meter 1 includes:

[0080] The detection module, including the voltage transformer and the current transformer, can collect the voltage and current signals in the circuit in real time, convert them into digital signals through the A / D converter and send them to the control module for processing;

[0081] A communication module, used for communicating with the smart socket 2;

[0082] A storage module, used to store information fed back by the detection module and the communication module;

[0083] The on-off module includes a plurality of relays for controlling the on-off of the circuit between the smart meter 1 and the smart socket 2;

[0084] A display module, including a touch display screen, for displaying operation information of the smart meter 1 and for inputting control information;

[0085] A clock module, used to feed back the current time and the operation time of the smart meter 1;

[0086] The power module includes a transformer and a voltage stabilizing chip, which is used to provide stable electric energy for the smart meter 1; the transformer is used to convert the high voltage of the AC power grid into a low voltage suitable for the internal circuit of the meter, and the voltage stabilizing chip is used to convert the unstable voltage output by the transformer into a stable DC voltage to supply various modules of the meter.

[0087] The control module is used to compare the voltage and current values ​​fed back by the detection module with the voltage and current thresholds recorded in the storage module, and adjust the working state of the smart meter 1 according to the comparison result; and is used to compare the voltage and current values ​​fed back by the smart socket 2 with the historical average values ​​in the storage module, and adjust the working state of the smart socket 2 according to the comparison result.

[0088] Specifically, the comparison results output by the control module will also be saved in the storage module. The user can set the sampling frequency of the detection module by himself through the touch display screen to check the operating status of the circuit. This setting can cut off the power supply in time when the voltage or current of the circuit is abnormal, avoid affecting household appliances, extend the service life of household appliances, and reduce electrical safety accidents.

[0089] Preferably, the clock module includes a real-time clock chip, which 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 maintenance personnel diagnose problems and arrange maintenance work.

[0090] Preferably, the power module also includes a battery, and when the power grid fails, the battery can supply power to the smart meter.

[0091] As a preferred example of the present application, the smart socket 2 includes:

[0092] The detection unit, including a voltage transformer and a current transformer, can collect the voltage and current values ​​of the controlled electrical appliance 3 in real time, convert them into digital signals through an A / D converter and send them to the control module for processing;

[0093] A communication unit, used for communicating with the smart meter 1;

[0094] A power supply unit, including a relay, for controlling the on / off of the circuit between the smart socket 2 and the controlled electrical appliance 3;

[0095] The power supply unit includes a transformer and a voltage stabilizing chip, which is used to provide stable power for the smart socket 2; the transformer is used to convert the high voltage of the AC power grid into a low voltage suitable for the operation of the internal circuit of the socket, and the voltage stabilizing chip is used to convert the unstable voltage output by the transformer into a stable DC voltage to supply each unit of the socket.

[0096] The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter 1.

[0097] Specifically, in this arrangement, when a fault occurs in the controlled electrical appliance 3, the smart meter 1 can promptly discover the fault point based on the information fed back by the smart socket 2, and control the corresponding smart socket 2 to stop supplying power to the controlled electrical appliance 3, thereby greatly improving safety.

[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] As a preferred example of the present application, the smart meter 1 is provided with a first alarm indicator light 11. After the on-off module is turned off, the first alarm indicator light 11 lights up to remind the user; the smart socket 2 is provided with a second alarm indicator light 21. After the power supply unit is turned off, the second alarm indicator light 21 lights up to remind the user.

[0101] Specifically, the first alarm indicator light 11 and the second alarm indicator light 21 can provide timely visual feedback to the user when the circuit state changes, thereby helping the user to quickly understand the working state of the device and reduce the risk of device damage or safety accidents.

[0102] As a preferred example of the present application, when the smart meter 1 detects that the voltage and current status of the circuit are abnormal, it can send alarm information to the power supply company and the smart terminal; when the smart meter 1 detects that the voltage and current status of the controlled electrical appliance 3 are abnormal, it can send alarm information to the smart terminal.

[0103] Specifically, sending alarm information to power supply companies can help them understand the operating status of the power grid in a timely manner, deal with potential safety hazards in a timely manner, and ensure the safe and stable operation of the power system. Sending alarm information to smart terminals enables users to monitor circuit status through mobile devices, helping users take measures before serious equipment failures occur, thereby reducing economic losses caused by equipment damage or power failures.

[0104] The present application also provides an intelligent control method of a circuit, which is used in the aforementioned control system, comprising the steps of:

[0105] S1: Detect and determine whether the voltage and current status of the circuit are normal. If not, the smart meter 1 stops supplying power to the smart socket 2 and enters S3. If yes, enter S2;

[0106] S2: Detect and determine whether the voltage and current status of the controlled electrical appliance 3 are normal. If not, the smart socket 2 stops supplying power to the controlled electrical appliance 3. If yes, enter S1;

[0107] S3: Detect and determine whether the voltage and current status of the circuit are normal. If so, the smart meter 1 supplies power to the smart socket 2 and enters S1. If not, enter S3.

[0108] Specifically, when an abnormality occurs in the circuit or the controlled electrical appliance 3, the system can automatically stop supplying power to prevent equipment damage and potential safety hazards. After the smart meter 1 stops supplying power to the smart socket 2, the circuit status is cyclically detected to ensure that the circuit is powered on again after it returns to normal, thereby enhancing the system's automation level. This method can detect abnormal situations in a timely manner and ensure the stability and safety of the power system by continuously detecting the voltage and current status of the circuit and the controlled electrical appliance 3.

[0109] Preferably, after the user eliminates the fault, the user can adjust the power supply status of the smart meter 1 and the smart socket 2 through the mobile terminal or the touch display screen of the smart meter 1.

[0110] As a preferred example of the present application, step S1 includes:

[0111] S11: Sample the voltage and current values ​​of the circuit at every interval of t0, and enter S12;

[0112] S12: Determine whether U1<U2<U3. If so, the circuit voltage is normal and enter S13. If not, enter S14.

[0113] S13: Determine whether I2 < I3. If so, the current of the circuit is normal and the process goes to S2. If not, the process goes to S15.

[0114] S14: Determine whether t2>t1, if yes, the circuit state is abnormal, go to S16, if no, go to S13;

[0115] S15: Determine whether t4>t3, if so, the circuit state is abnormal, enter S16, if not, enter S2;

[0116] S16: the on / off module is turned off, the smart meter 1 stops supplying power to the smart socket 2, and the process goes to S3;

[0117] Among them, U1 is the lower threshold of the circuit voltage, U2 is the actual measured value of the circuit voltage, U3 is the upper threshold of the circuit voltage, I2 is the actual measured value of the circuit current, I3 is the upper threshold of the circuit current, t0 is the time interval for sampling the circuit voltage and current, t1 is the upper threshold of the circuit voltage abnormal time, t2 is the actual measured value of the circuit voltage abnormal time, t3 is the upper threshold of the circuit current abnormal time, and t4 is the actual measured value of the circuit current abnormal time.

[0118] Specifically, this setting can quickly identify abnormal conditions in the circuit by comparing the real-time voltage and current of the circuit with the threshold, cut off the power supply in time, and ensure the normal operation of the equipment and the safety of the user. By setting the time threshold for detection, it can avoid misjudgment caused by instantaneous circuit fluctuations and improve the accuracy of control.

[0119] As a preferred example of the present application, step S2 includes:

[0120] S21: Sampling the voltage and current values ​​of the controlled electrical appliance 3 at intervals of t5, and entering S22;

[0121] S22: Determine whether If yes, then the voltage of the controlled electrical appliance 3 is positive.

[0122] If yes, go to S23; if no, go to S24;

[0123] S23: Determine whether If yes, the current of the controlled electrical appliance 3 is normal.

[0124] Go to S1, if not, go to S25;

[0125] S24: Determine whether t8>t7. If so, the state of the controlled electrical appliance 3 is abnormal, and enter S26. If not, enter S23.

[0126] S25: Determine whether t 10 > t9, if yes, the state of the controlled electrical appliance 3 is abnormal, and the process goes to S26; if no, the process goes to S1;

[0127] S26: the power supply unit is turned off, and the smart socket 2 stops supplying power to the controlled electrical appliance 3;

[0128] Among them, U4 is the average voltage value of the controlled electrical appliance 3 in the T time period before sampling. The user can select any period before the current sampling as the T time period according to the historical records. U5 is the actual measured value of the voltage of the controlled electrical appliance 3, I5 is the actual measured value of the current of the controlled electrical appliance 3, I4 is the average current value of the controlled electrical appliance 3 in the T time period before sampling, α is the threshold value of the voltage deviation of the controlled electrical appliance 3, β is the threshold value of the current deviation of the controlled electrical appliance 3, t5 is the time interval for sampling the voltage and current of the controlled electrical appliance 3, t7 is the upper limit threshold value of the abnormal voltage time of the controlled electrical appliance 3, t8 is the actual measured value of the abnormal voltage time of the controlled electrical appliance 3, t9 is the upper limit threshold value of the abnormal current time of the controlled electrical appliance 3, t 10 It is the actual measured value of the abnormal current time of the controlled electrical appliance 3.

[0129] Specifically, by sampling the working voltage and current of the controlled electrical appliance 3 in real time and comparing the real-time sampled voltage and current with the historical average values, potential faults of the controlled electrical appliance 3 can be quickly identified. By setting a time threshold for detection, misjudgment due to instantaneous fluctuations can also be reduced. This setting can effectively reduce the probability of failure of the controlled electrical appliance 3 and ensure the normal operation of the equipment and the safety of users.

[0130] As a preferred example of the present application, step S3 includes:

[0131] S31: Sample the voltage and current values ​​of the circuit at every interval of t0, and enter S32;

[0132] S32: Determine whether U1<U2<U3, if so, the circuit voltage is normal, and enter S33, if not, enter S34;

[0133] S33: Determine whether I2 < I3. If so, the current of the circuit is normal, the smart meter 1 supplies power to the smart socket 2, and enter S1. If not, enter S35.

[0134] S34: Determine whether t2>t1, if yes, the circuit voltage is abnormal, go to S31, if no, go to S33;

[0135] S35: Determine whether t4>t3. If so, the current in the circuit is abnormal and enters S31. If not, the smart meter 1 supplies power to the smart socket 2 and enters S1.

[0136] Specifically, after the smart meter 1 stops supplying power to the smart socket 2, it can supply power to the smart socket 2 in time by cyclically detecting the status of the circuit after the circuit returns to normal, without the need for manual adjustment by the user, thereby enhancing the degree of automation of the system and improving the user experience. By setting the time threshold for detection, it can avoid misjudgment caused by instantaneous circuit fluctuations and improve the accuracy of control.

[0137] The intelligent control system and control method of the circuit described in the present application have the following advantages: 1) The smart meter 1 can detect the abnormal state of the circuit in time by comparing the measured circuit voltage and current values ​​with the set threshold values, and automatically adjust the power supply state to the smart socket 2, which helps to reduce the impact of unstable power on electrical equipment, extend the service life of electrical equipment, and avoid electrical safety accidents. At the same time, the smart meter 1 can detect the abnormal state of the controlled electrical appliance 3 in time by comparing the voltage and current values ​​of the controlled electrical appliance 3 with the historical average values, and automatically adjust the power supply state of the smart socket 2 to the controlled electrical appliance 3, thereby avoiding further damage to the controlled electrical appliance 3 or electrical safety accidents, thereby improving safety; 2) After the smart meter 1 stops supplying power to the smart socket 2, the circuit state is cyclically detected to ensure that the circuit is powered again after returning to normal, thereby enhancing the degree of automation of the system; 3) By setting the time threshold for detection, misjudgment caused by instantaneous circuit fluctuations can be avoided, thereby improving the accuracy of control.

[0138] 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. An intelligent control system for a circuit, characterized in that: include: A smart electric meter (1) and a smart socket (2), wherein the smart electric meter (1) and the smart socket (2) are capable of communicating with each other; The smart electric meter (1) is used to measure and record the voltage and current values ​​in the circuit, and compare the measured voltage and current values ​​with the voltage and current thresholds, and adjust the power supply state to the smart socket (2) according to the comparison result; The smart socket (2) is used to provide electric energy to the controlled electrical appliance (3), and is capable of measuring the voltage and current values ​​of the controlled electrical appliance (3), and feeding back the measured voltage and current values ​​to the smart meter (1); the smart meter (1) compares the voltage and current values ​​of the controlled electrical appliance (3) with historical average values, and adjusts the power supply state of the smart socket (2) to the controlled electrical appliance (3) according to the comparison result.

2. The intelligent control system of the circuit according to claim 1, characterized in that: The smart electric meter (1) comprises: The detection module includes a voltage transformer and a current transformer, and is capable of collecting voltage and current signals in the circuit in real time, converting them into digital signals through an A / D converter and sending them to the control module for processing; the communication module is used to communicate with the smart socket (2); A storage module, used to store information fed back by the detection module and the communication module; An on-off module, comprising a plurality of relays, for controlling the on-off of a circuit between a smart meter (1) and a smart socket (2); A display module, comprising a touch screen, used to display operation information of the smart meter (1) and to input control information; A clock module, used to feedback the current time and the operation time of the smart meter (1); The power module includes a transformer and a voltage stabilizing chip, and is used to provide stable electric energy for the smart meter; the control module is used to compare the voltage and current values ​​fed back by the detection module with the voltage and current thresholds recorded in the storage module, and adjust the working state of the smart meter (1) according to the comparison result; and is used to compare the voltage and current values ​​fed back by the smart socket (2) with the historical average values ​​in the storage module, and adjust the working state of the smart socket (2) according to the comparison result.

3. The intelligent control system of the circuit according to claim 2, characterized in that: The smart socket (2) comprises: The detection unit includes a voltage transformer and a current transformer, which can collect the voltage and current values ​​of the controlled electrical appliance (3) in real time, convert them into digital signals through an A / D converter and send them to the control module for processing; A communication unit, used for communicating with a smart meter (1); A power supply unit, comprising a relay, for controlling the on / off of a circuit between the smart socket (2) and the controlled electrical appliance (3); A power supply unit, comprising a transformer and a voltage stabilizing chip, for providing stable electric energy to the smart socket (2); The control unit is used to adjust the working state of the power supply unit according to the instruction of the smart meter (1).

4. The intelligent control system of the circuit according to claim 3, characterized in that: The communication mode between the communication module and the communication unit is wireless communication.

5. The intelligent control system of the circuit according to claim 3, characterized in that: The smart meter (1) is provided with a first alarm indicator light (11), and after the on-off module is turned off, the first alarm indicator light (11) lights up to remind the user; the smart socket (2) is provided with a second alarm indicator light (21), and after the power supply unit is turned off, the second alarm indicator light (21) lights up to remind the user.

6. The intelligent control system of the circuit according to claim 1, characterized in that: When the smart meter (1) detects that the voltage and current status of the circuit are abnormal, it can send an alarm message to the power supply company and the smart terminal; when the smart meter (1) detects that the voltage and current status of the controlled electrical appliance (3) are abnormal, it can send an alarm message to the smart terminal.

7. An intelligent control method for a circuit, used in the control system according to any one of claims 1 to 6, characterized in that: Includes steps: S1: Detect and determine whether the voltage and current status of the circuit are normal. If not, the smart meter (1) stops supplying power to the smart socket (2) and enters S3. If yes, enters S2; S2: Detect and determine whether the voltage and current status of the controlled electrical appliance (3) are normal. If not, the smart socket (2) stops supplying power to the controlled electrical appliance (3). If yes, enter S1; S3: Detect and determine whether the voltage and current status of the circuit are normal. If so, the smart meter (1) supplies power to the smart socket (2) and enters S1. If not, enters S3.

8. The intelligent control method of a circuit according to claim 7, characterized in that: Step S1 includes: S11: Sample the voltage and current values ​​of the circuit at every interval of t0, and enter S12; S12: Determine whether U1<U2<U3. If so, the circuit voltage is normal and enter S13. If not, enter S14. S13: Determine whether I2 < I3. If so, the current of the circuit is normal and the process goes to S2. If not, the process goes to S15. S14: Determine whether t2>t1, if yes, the circuit state is abnormal, go to S16, if no, go to S13; S15: Determine whether t4>t3, if so, the circuit state is abnormal, enter S16, if not, enter S2; S16: the smart meter (1) stops supplying power to the smart socket (2), and the process goes to S3; Among them, U1 is the lower threshold of the circuit voltage, U2 is the actual measured value of the circuit voltage, U3 is the upper threshold of the circuit voltage, I2 is the actual measured value of the circuit current, I3 is the upper threshold of the circuit current, t0 is the time interval for sampling the circuit voltage and current, t1 is the upper threshold of the circuit voltage abnormal time, t2 is the actual measured value of the circuit voltage abnormal time, t3 is the upper threshold of the circuit current abnormal time, and t4 is the actual measured value of the circuit current abnormal time.

9. The intelligent control method of a circuit according to claim 7, characterized in that: Step S2 includes: S21: At every interval of t5, the voltage and current values ​​of the controlled electrical appliance (3) are sampled and the process proceeds to S22; S22: Determine whether If yes, the voltage of the controlled electrical appliance (3) is normal, and the process goes to S23; if no, the process goes to S24; S23: Determine whether If yes, the current of the controlled electrical appliance (3) is normal, and the process goes to S1; if no, the process goes to S25; S24: Determine whether t8>t7. If so, the state of the controlled electrical appliance (3) is abnormal, and enter S26. If not, enter S23. S25: Determine whether t 10 >t9, if yes, the state of the controlled electrical appliance (3) is abnormal, and the process goes to S26; if no, the process goes to S1; S26: the smart socket (2) stops supplying power to the controlled electrical appliance (3); Wherein, U4 is the average voltage value of the controlled electrical appliance (3) in the T time period before sampling. The user can select any period of time before sampling as the T time period according to the historical records. U5 is the actual measured value of the voltage of the controlled electrical appliance (3). I5 is the actual measured value of the current of the controlled electrical appliance (3). I4 is the average current value of the controlled electrical appliance (3) in the T time period before sampling. α is the threshold value of the voltage deviation of the controlled electrical appliance (3). β is the threshold value of the current deviation of the controlled electrical appliance (3). t5 is the time interval for sampling the voltage and current of the controlled electrical appliance (3). t7 is the upper limit threshold value of the abnormal voltage time of the controlled electrical appliance (3). t8 is the actual measured value of the abnormal voltage time of the controlled electrical appliance (3). t9 is the upper limit threshold value of the abnormal current time of the controlled electrical appliance (3). t 10 It is the actual measured value of the abnormal current time of the controlled electrical appliance (3).

10. The intelligent control method of a circuit according to claim 8, characterized in that: Step S3 includes: S31: Sample the voltage and current values ​​of the circuit at every interval of t0, and enter S32; S32: Determine whether U1<U2<U3, if so, the circuit voltage is normal, and enter S33, if not, enter S34; S33: Determine whether I2 < I3. If so, the current of the circuit is normal, the smart meter (1) supplies power to the smart socket (2), and the process goes to S1. If not, the process goes to S35. S34: Determine whether t2>t1, if yes, the circuit voltage is abnormal, go to S31, if no, go to S33; S35: Determine whether t4>t3. If so, the current in the circuit is abnormal and the process goes to S31. If not, the smart meter (1) supplies power to the smart socket (2) and the process goes to S1.

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