Fee control device and fee control system

Abstract

The utility model provides a cost control device and a cost control system. The cost control device comprises a voltage acquisition circuit, a current acquisition circuit, a metering circuit, a microprocessor and a control circuit. The voltage acquisition circuit acquires a voltage signal of at least one electric device and transmits the voltage signal to the metering circuit. The current acquisition circuit transmits a current signal to the metering circuit. Therefore, the metering circuit carries out operation processing on the voltage signal and the current signal to obtain electrical parameter information, and transmits the electrical parameter information to the microprocessor. Thus, the processor judges whether the at least one electric device meets the preset condition or not according to the electric parameter information, obtains an enable signal, and transmits the enable signal to the control circuit. Furthermore, the control circuit obtains the cost control signal from the electric energy meter, and controls the cost control switch to be turned off according to the cost control signal after enabling, so as to cut off the power supply of at least one electric device. Therefore, when a danger occurs, the electric equipment can be disconnected in time, so that the personal safety and the property safety are protected.

Description

Technical Field

[0001] This application relates to the technical field of power consumption control, and particularly to a power consumption control device and a power consumption control system. Background Art

[0002] Since the electricity meter does not have the function of detecting the power consumption situation of electrical equipment, when a danger occurs, the electricity meter cannot disconnect the electrical equipment in time to protect personal and property safety. Utility Model Content

[0003] This application provides a power consumption control device and a power consumption control system, which can disconnect electrical equipment in time when a danger occurs.

[0004] In a first aspect, this application provides a power consumption control device, which includes: a voltage acquisition circuit, a current acquisition circuit, a metering circuit, a microprocessor, and a control circuit.

[0005] The first input terminal of the voltage acquisition circuit is electrically connected to the live wire, the second input terminal of the voltage acquisition circuit is electrically connected to the neutral wire, the input terminal of the current acquisition circuit is used to access the current signal of at least one electrical equipment, the output terminals of the voltage acquisition circuit and the current acquisition circuit are both electrically connected to the first terminal of the metering circuit, the second terminal of the metering circuit is electrically connected to the first terminal of the microprocessor, the second terminal of the microprocessor is electrically connected to the first terminal of the control circuit, the second terminal of the control circuit is electrically connected to the power consumption control switch, and the third terminal of the control circuit is electrically connected to the electricity meter.

[0006] The voltage acquisition circuit is used to acquire the voltage signal of at least one electrical equipment and transmit the voltage signal to the metering circuit.

[0007] The current acquisition circuit is used to transmit the current signal to the metering circuit.

[0008] The metering circuit is used to perform arithmetic processing on the voltage signal and the current signal to obtain electrical parameter information, and transmit the electrical parameter information to the microprocessor. The electrical parameter information is used to characterize the power consumption situation of at least one electrical equipment.

[0009] The microprocessor is used to judge whether at least one electrical equipment meets a preset condition according to the electrical parameter information, obtain an enable signal, and transmit the enable signal to the control circuit. The enable signal is used to enable the control circuit.

[0010] The control circuit is used to obtain the power consumption control signal from the electricity meter, and after being enabled, control the power consumption control switch to turn off according to the power consumption control signal to cut off the power supply of at least one electrical equipment.

[0011] Among them, the voltage acquisition circuit includes: a current limiting component, and the input terminal of the current limiting component is electrically connected to the live wire.

[0012] Through the power consumption control device provided by the first aspect, the voltage acquisition circuit can acquire the voltage signals of at least one electrical device and transmit the voltage signals to the metering circuit, so that the metering circuit can obtain the voltage signals. The current acquisition circuit can transmit the current signals to the metering circuit, so that the metering circuit can obtain the current signals. In this way, the metering circuit can perform arithmetic processing on the voltage signals and current signals to obtain the electrical parameter information used to characterize the power consumption situation of at least one electrical device, and transmit the electrical parameter information to the microprocessor, so that the processor can obtain the electrical parameter information. Thus, the processor can judge whether at least one electrical device meets the preset conditions according to the electrical parameter information, obtain the enable signal, and transmit the enable signal to the control circuit to enable the control circuit. Furthermore, the control circuit can obtain the power consumption control signal from the electric energy meter, and after being enabled, according to the power consumption control signal, control the power consumption control switch to turn off to cut off the power supply of at least one electrical device. Thus, in case of danger, the electrical device can be disconnected in time to protect personal safety and property safety.

[0013] In a possible design, the power consumption control device further includes: a wireless communication circuit, and the wireless communication circuit is electrically connected to the third terminal of the microprocessor.

[0014] The wireless communication circuit is used to obtain the electrical parameter information from the microprocessor and transmit the electrical parameter information to the server, so that the server can remotely control the power consumption control device.

[0015] In a possible design, the power consumption control device further includes: a power supply circuit.

[0016] The output terminal of the power supply circuit is electrically connected to the power supply terminals of the voltage acquisition circuit, the current acquisition circuit, the metering circuit, the wireless communication circuit, the control circuit and the microprocessor respectively.

[0017] The power supply circuit is used to supply power to the power supply terminals of the voltage acquisition circuit, the current acquisition circuit, the metering circuit, the wireless communication circuit, the control circuit and the microprocessor respectively.

[0018] In a possible design, the control circuit includes: a switching tube, a relay, a pull-up resistor and a terminal block.

[0019] The control terminal of the switching tube is electrically connected to the second terminal of the microprocessor, the first terminal of the switching tube is electrically connected to the first terminal of the relay, the second terminal of the relay is electrically connected to the pull-up resistor, the third terminal of the relay is electrically connected to the first terminal of the terminal block, the fourth terminal of the relay and the second terminal of the terminal block are both electrically connected to the power consumption control switch, and the first terminal and the second terminal of the terminal block are also both electrically connected to the electric energy meter.

[0020] In a possible design, the voltage acquisition circuit includes: a voltage transformer, a first sampling resistor and a first filtering component.

[0021] The first end of the voltage transformer is electrically connected to the output end of the current limiting component, the second end of the voltage transformer is electrically connected to the neutral line, the third end of the voltage transformer is electrically connected to the first end of the first filtering component, the second end of the first filtering component is electrically connected to the first end of the metering circuit, the first end of the first sampling resistor is electrically connected between the third end of the voltage transformer and the first end of the first filtering component, and the fourth end of the voltage transformer, the second end of the second sampling resistor, and the third end of the first filtering component are all grounded.

[0022] In a possible design, the first filtering component includes: a first resistor and a first capacitor.

[0023] The first end of the first resistor is electrically connected to the third end of the voltage transformer, the second end of the first resistor is electrically connected to the first end of the metering circuit, the first end of the first capacitor is electrically connected between the second end of the first resistor and the first end of the metering circuit, and the second end of the first capacitor is grounded.

[0024] In a possible design, the current acquisition circuit includes: a current transformer, a second sampling resistor, and a second filtering component.

[0025] The first end of the secondary side of the current transformer is electrically connected to the first end of the second filtering component, the second end of the secondary side of the current transformer is electrically connected to the second end of the second filtering component, the first end of the second sampling resistor is electrically connected between the first end of the current transformer and the first end of the second filtering component, the second end of the second sampling resistor is electrically connected between the second end of the current transformer and the second end of the second filtering component, and the third end and the fourth end of the second filtering component are both electrically connected to the first end of the metering circuit.

[0026] In a possible design, the current acquisition circuit further includes: a clamping component, the first end of the clamping component is electrically connected between the first end of the current transformer and the first end of the second sampling resistor, and the second end of the clamping component is electrically connected between the second end of the current transformer and the second end of the second sampling resistor.

[0027] In a possible design, the second filtering component includes: a second resistor, a third resistor, a second capacitor, and a third capacitor.

[0028] The first end of the second resistor is electrically connected to the first end of the current transformer, the first end of the third resistor is electrically connected to the second end of the current transformer, the second ends of the second resistor and the third resistor are both electrically connected to the first end of the metering circuit, the first end of the second capacitor is electrically connected between the second end of the second resistor and the first end of the metering circuit, the first end of the third capacitor is electrically connected between the second end of the third resistor and the first end of the metering circuit, and the second ends of the second capacitor and the third capacitor are both grounded.

[0029] In a second aspect, the present application provides a fee control system, including: an electric energy meter, a fee control switch, and a fee control device in the first aspect above and each possible design of the first aspect above.

[0030] A first end of the fee control device is electrically connected to the electric energy meter, and a second end of the fee control device is electrically connected to the fee control switch.

[0031] For the fee control device provided in the second aspect above and each possible design of the second aspect above, the beneficial effects can refer to the beneficial effects brought by the first aspect above and each possible implementation manner of the first aspect, which will not be elaborated here. Description of the Drawings

[0032] Figure 1 It is a schematic structural diagram of a fee control system provided by an embodiment of the present application;

[0033] Figure 2 It is a schematic structural diagram of a fee control device provided by an embodiment of the present application;

[0034] Figure 3 It is a schematic structural diagram of a control circuit in a fee control device provided by an embodiment of the present application;

[0035] Figure 4 It is a schematic structural diagram of another fee control device provided by an embodiment of the present application.

[0036] Description of the Reference Numerals:

[0037] 1000, fee control system; 100, fee control device; 200, fee control switch; 300, electric energy meter; 110, voltage acquisition circuit; 111, current limiting component; 112, first filtering component; 113, voltage transformer; 120, current acquisition circuit; 121, second filtering component; 122, clamping component; 123, current transformer; 130, metering circuit; 140, microprocessor; 150, control circuit; 151, pull-up resistor; 152, relay; 160, wireless communication circuit; 170, power supply circuit; 180, 485 communication circuit. Detailed Embodiments

[0038] In this application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the relationship between related objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the related objects before and after. "At least one of the following" or a similar expression refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a alone, b alone, or c alone can represent: a alone, b alone, c alone, the combination of a and b, the combination of a and c, the combination of b and c, or the combination of a, b, and c, where a, b, and c can be single or multiple. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] The orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0040] The terms "connected" and "coupled" should be understood in a broad sense. For example, the "connection" or "coupling" of a circuit structure can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, that is, a physical connection, or it can be indirectly connected through at least one intermediate element, as long as the circuit is connected. It can also be the connection inside two elements; a signal connection can refer not only to a signal connection through a circuit but also to a signal connection through a media medium, such as radio waves. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0041] This application provides a fee control device and a fee control system.

[0042] Refer to Figure 1 , Figure 1 which is a schematic structural diagram of a fee control system provided by an embodiment of this application. As Figure 1 shown, the fee control system 1000 can include: an electric energy meter 300, a fee control switch 200, and a fee control device 100.

[0043] The first end of the fee control device 100 is electrically connected to the electric energy meter 300, and the second end of the fee control device 100 is electrically connected to the fee control switch 200.

[0044] The fee control device 100 can determine the types of electrical devices and the power consumption of electrical devices based on the current signals of at least one electrical device and the voltage signals of at least one electrical device. Thus, after the fee control device 100 obtains the fee control signal from the electricity meter, according to the types of electrical devices and the power consumption of electrical devices, it controls the fee control switch 200 to turn off through the fee control signal to cut off the power supply of the electrical device. Thus, in case of danger, the fee control device 100 can promptly disconnect the electrical device to protect personal safety and property safety.

[0045] Referring to Figure 2 , Figure 2 shows Figure 1 the schematic structural diagram of the fee control device in Figure 2 As shown, the fee control device 100 may include: a voltage acquisition circuit 110, a current acquisition circuit 120, a metering circuit 130, a microprocessor 140, and a control circuit 150.

[0046] The first input terminal of the voltage acquisition circuit 110 is electrically connected to the live wire L, the second input terminal of the voltage acquisition circuit 110 is electrically connected to the neutral wire N, the input terminal of the current acquisition circuit 120 is used to access the current signals of at least one electrical device, the output terminals of the voltage acquisition circuit 110 and the current acquisition circuit 120 are both electrically connected to the first terminal of the metering circuit 130, the second terminal of the metering circuit 130 is electrically connected to the first terminal of the microprocessor 140, the second terminal of the microprocessor 140 is electrically connected to the first terminal of the control circuit 150, the second terminal of the control circuit 150 is electrically connected to the fee control switch 200, and the third terminal of the control circuit 150 is electrically connected to the electricity meter 300.

[0047] Among them, the voltage acquisition circuit 110, the current acquisition circuit 120, the metering circuit 130, the microprocessor 140, and the control circuit 150 may be separately provided or integrally provided.

[0048] The voltage acquisition circuit 110 can acquire the voltage signals of at least one electrical device. And the voltage acquisition circuit 110 can transmit the voltage signals to the metering circuit 130 so that the metering circuit 130 can obtain the voltage signals.

[0049] The current acquisition circuit 120 can transmit the current signals to the metering circuit 130 so that the metering circuit 130 can obtain the current signals.

[0050] In this way, the metering circuit 130 can perform arithmetic processing on the voltage signals and current signals to obtain electrical parameter information. And the metering circuit 130 can transmit the electrical parameter information to the microprocessor 140 so that the microprocessor 140 can obtain the electrical parameter information.

[0051] Among them, the electrical parameter information is used to characterize the power consumption of at least one electrical device. The electrical parameter information includes, for example: voltage, current, phase, frequency, power, electric energy, etc.

[0052] In this way, the microprocessor 140 can process the electrical parameter information, determine the types and power consumption of at least one electrical device. Furthermore, the microprocessor 140 can determine whether at least one electrical device meets the preset conditions to obtain the enable signal EN. And the microprocessor 140 can transmit the enable signal EN to the control circuit 150 to enable the control circuit 150.

[0053] For example, the preset condition means that when at least one electrical device is specifically a water heater, the water heater charges illegally. Another example, the preset condition means that when at least one electrical device is an electric bicycle, the electric bicycle charges indoors in a residential household. Another example, the preset condition means that when at least one electrical device is specifically an electric kettle, the charging current of the electric kettle exceeds the rated load.

[0054] Among them, when at least one electrical device meets the preset conditions, that is, when at least one electrical device needs to be protected, the enable signal EN obtained by the microprocessor 140 is, for example, a high level to enable the control circuit 150. When at least one electrical device does not meet the preset conditions, that is, when at least one electrical device does not need to be protected, the enable signal EN obtained by the microprocessor 140 is, for example, a low level to disable the control circuit 150.

[0055] Among them, the enable signal EN is used to enable the control circuit 150.

[0056] Furthermore, the control circuit 150 can obtain the fee control signal from the watt-hour meter 300. And after being enabled, the control circuit 150 can control the fee control switch 200 to turn off according to the fee control signal, so as to cut off the power supply of at least one electrical device. Thus, when a danger occurs, the fee control device 100 can timely disconnect the electrical device to protect personal safety and property safety.

[0057] Among them, the voltage acquisition circuit 110 may include: a current limiting component 111, and the input end of the current limiting component 111 is electrically connected to the live wire L.

[0058] In some examples, the current limiting component 111 may include: a plurality of resistors. Among them, the current limiting component 111 can limit the current of the voltage signal to prevent the voltage signal after current limiting from damaging the components in the voltage acquisition circuit 110.

[0059] Among them, the fee control signal is, for example, a signal of AC220V.

[0060] The power consumption control device and power consumption control system provided by this application can collect voltage signals of at least one electrical device through a voltage acquisition circuit and transmit the voltage signals to a metering circuit, enabling the metering circuit to obtain the voltage signals. A current acquisition circuit can transmit current signals to the metering circuit, enabling the metering circuit to obtain the current signals. In this way, the metering circuit can perform arithmetic processing on the voltage signals and current signals to obtain electrical parameter information for characterizing the power consumption situation of at least one electrical device, and transmit the electrical parameter information to the microprocessor, enabling the processor to obtain the electrical parameter information. Thus, the processor can determine whether at least one electrical device meets a preset condition based on the electrical parameter information, obtain an enabling signal, and transmit the enabling signal to the control circuit to enable the control circuit. Furthermore, the control circuit can obtain a power consumption control signal from the electricity meter and, after being enabled, control the power consumption control switch to turn off according to the power consumption control signal to cut off the power supply of at least one electrical device. Therefore, in case of danger, the electrical device can be disconnected in a timely manner to protect personal safety and property safety.

[0061] Based on the description of the above embodiments, exemplarily, a possible implementation manner of the power consumption control device 100. As Figure 2 shown, the power consumption control device 100 may further include: a wireless communication circuit 160.

[0062] The wireless communication circuit 160 is electrically connected to the third terminal of the microprocessor 140.

[0063] The wireless communication circuit 160 can obtain electrical parameter information from the microprocessor 140. And the wireless communication circuit 160 can transmit the electrical parameter information to the server, enabling the server to obtain the electrical parameter information. Thus, the server can perform data processing on the electrical parameter information to determine the types and power consumption situations of at least one electrical device. Furthermore, the server can determine whether at least one electrical device meets a preset condition to drive the control circuit 150. Therefore, the server can remotely control the power consumption control device 100.

[0064] In summary, the wireless communication circuit obtains electrical parameter information from the microprocessor and transmits the electrical parameter information to the server, enabling the server to remotely control the power consumption control device.

[0065] Based on the description of the above embodiments, exemplarily, another possible implementation manner of the power consumption control device 100. As Figure 2 shown, the power consumption control device 100 may further include: a power supply circuit 170.

[0066] The output terminals of the power supply circuit 170 are respectively electrically connected to the power supply terminals of the voltage acquisition circuit 110, the current acquisition circuit 120, the metering circuit 130, the wireless communication circuit 160, the control circuit 150, and the microprocessor 140.

[0067] The power supply circuit 170 can supply power to the power supply terminals of the voltage acquisition circuit 110, the current acquisition circuit 120, the metering circuit 130, the wireless communication circuit 160, the control circuit 150 and the microprocessor 140 respectively, enabling the power supply terminals of the voltage acquisition circuit 110, the current acquisition circuit 120, the metering circuit 130, the wireless communication circuit 160, the control circuit 150 and the microprocessor 140 to operate.

[0068] In some examples, the fee control device 100 may further include: a 485 communication circuit, and the 485 communication circuit is electrically connected to the third terminal of the microprocessor 140.

[0069] Wherein, the 485 communication circuit integrates the modbus communication protocol and the dlt698.45 communication protocol internally.

[0070] The 485 communication circuit reads the power consumption situation, the enable signal and the maximum power consumption current of at least one electrical device determined by the fee control device 100 through the 485 communication interface.

[0071] In summary, by the power supply circuit supplying power to the power supply terminals of the voltage acquisition circuit, the current acquisition circuit, the metering circuit, the wireless communication circuit, the control circuit and the microprocessor respectively, the power supply terminals of the voltage acquisition circuit, the current acquisition circuit, the metering circuit, the wireless communication circuit, the control circuit and the microprocessor can operate.

[0072] Based on the description of the above embodiments, exemplarily, a possible implementation manner of the control circuit 150. Refer to Figure 3 , Figure 3 shows Figure 2 the structural schematic diagram of the control circuit in Figure 3 As shown in

[0073]

[0074]

[0074] In some examples, the control circuit 150 may further include: a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7.

[0075] The first end of the fourth resistor R4 is electrically connected to the third end of the relay 152, the second end of the fourth resistor R4 is electrically connected to the first end of the relay 152, the first end of the fifth resistor R5 is electrically connected to the fourth end of the relay 152, the second end of the fifth resistor R5 is electrically connected to the fee control switch 200, the first end of the seventh resistor R7 is electrically connected to the second end of the microprocessor 140, the second end of the seventh resistor R7 is electrically connected to the control end of the switching transistor Q, the first end of the sixth resistor R6 is electrically connected between the first end of the seventh resistor R7 and the second end of the microprocessor 140, and the second end of the sixth resistor R6 is grounded.

[0076] When the enable signal EN is at a high level, for example, the switching transistor Q conducts, causing the relay 152 to conduct. In this way, the fee control signal can be input to the fee control switch 200 to turn off the fee control switch 200. Thus, after enabling, the control circuit 150 can control the fee control switch 200 to turn off according to the fee control signal.

[0077] Based on the description of the above embodiments, exemplarily, a possible implementation of the voltage acquisition circuit 110. Refer to Figure 4 , Figure 4 shows Figure 2 the structural schematic diagram of the fee control device in Figure 4 As shown, the voltage acquisition circuit 110 may include: a voltage transformer 113, a first sampling resistor Rs1, and a first filtering component 112.

[0078] The first end of the voltage transformer 113 is electrically connected to the output end of the current limiting component 111, the second end of the voltage transformer 113 is electrically connected to the neutral line N, the third end of the voltage transformer 113 is electrically connected to the first end of the first filtering component 112, the second end of the first filtering component 112 is electrically connected to the first end of the metering circuit 130, the first end of the first sampling resistor Rs1 is electrically connected between the third end of the voltage transformer 113 and the first end of the first filtering component 112, and the fourth end of the voltage transformer 113, the second end of the second sampling resistor Rs2, and the third end of the first filtering component 112 are all grounded.

[0079] In some examples, the first filtering component 112 may include: a first resistor R1 and a first capacitor C1.

[0080] The first end of the first resistor R1 is electrically connected to the third end of the voltage transformer 113, the second end of the first resistor R1 is electrically connected to the first end of the metering circuit 130, the first end of the first capacitor C1 is electrically connected between the second end of the first resistor R1 and the first end of the metering circuit 130, and the second end of the first capacitor C1 is grounded.

[0081] The voltage-limited voltage signal is obtained through the voltage transformer 113, and the first sampling resistor Rs1 is used for sampling to obtain a first sampling signal. In this way, after the first filtering component 112 filters the first sampling signal, the metering circuit 130 can obtain the filtered first sampling signal from the first filtering component 112. Thus, the voltage acquisition circuit 110 can acquire the voltage signals of at least one electrical device.

[0082] Based on the description of the above embodiments, exemplary, a possible implementation manner of the current acquisition circuit 120. As Figure 4 shown, the current acquisition circuit 120 may include: a current transformer 123, a second sampling resistor Rs2, and a second filtering component 121.

[0083] The first end of the secondary side of the current transformer 123 is electrically connected to the first end of the second filtering component 121, the second end of the secondary side of the current transformer 123 is electrically connected to the second end of the second filtering component 121, the first end of the second sampling resistor Rs2 is electrically connected between the first end of the current transformer 123 and the first end of the second filtering component 121, the second end of the second sampling resistor Rs2 is electrically connected between the second end of the current transformer 123 and the second end of the second filtering component 121, and the third end and the fourth end of the second filtering component 121 are both electrically connected to the first end of the metering circuit 130.

[0084] In some examples, the second filtering component 121 may include: a second resistor R2, a third resistor R3, a second capacitor C2, and a third capacitor C3.

[0085] The first end of the second resistor R2 is electrically connected to the first end of the current transformer 123, the first end of the third resistor R3 is electrically connected to the second end of the current transformer 123, the second ends of the second resistor R2 and the third resistor R3 are both electrically connected to the first end of the metering circuit 130, the first end of the second capacitor C2 is electrically connected between the second end of the second resistor R2 and the first end of the metering circuit 130, the first end of the third capacitor C3 is electrically connected between the second end of the third resistor R3 and the first end of the metering circuit 130, and the second ends of the second capacitor C2 and the third capacitor C3 are both grounded.

[0086] The current signal is obtained through the current transformer 123, and the second sampling resistor Rs2 is used for sampling to obtain a second sampling signal. In this way, after the second filtering component 121 filters the second sampling signal, the metering circuit 130 can obtain the filtered second sampling signal from the second filtering component 121. Thus, the current acquisition circuit 120 can transmit the current signal to the metering circuit 130.

[0087] Based on the description of the above embodiment, another possible implementation of the current acquisition circuit 120 is exemplified. Figure 4 As shown, the current acquisition circuit 120 may further include: a clamping component 122, a first end of the clamping component 122 being electrically connected between a first end of the current transformer 123 and a first end of the second sampling resistor Rs2, and a second end of the clamping component 122 being electrically connected between a second end of the current transformer 123 and a second end of the second sampling resistor Rs2.

[0088] The current signal is clamped by the clamping component 122 to avoid damage to the subsequent circuit when a large current flows instantaneously.

[0089] In some examples, such as Figure 4 As shown, the metering circuit 130 may be a metering chip. Pins IAP, IAN and VP of the metering chip are the first end of the metering circuit 130. Pins USART1_TXD and USART1_RXD of the metering chip are the second end of the metering circuit 130.

[0090] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A power consumption control device, characterized in that, The power consumption control device includes: a voltage acquisition circuit, a current acquisition circuit, a metering circuit, a microprocessor, and a control circuit; The first input terminal of the voltage acquisition circuit is electrically connected to the live wire, the second input terminal of the voltage acquisition circuit is electrically connected to the neutral wire, the input terminal of the current acquisition circuit is used to access the current signal of at least one electrical device, the output terminals of the voltage acquisition circuit and the current acquisition circuit are both electrically connected to the first terminal of the metering circuit, the second terminal of the metering circuit is electrically connected to the first terminal of the microprocessor, the second terminal of the microprocessor is electrically connected to the first terminal of the control circuit, the second terminal of the control circuit is electrically connected to the power consumption control switch, and the third terminal of the control circuit is electrically connected to the electricity meter; The voltage acquisition circuit is used to acquire the voltage signal of the at least one electrical device and transmit the voltage signal to the metering circuit; The current acquisition circuit is used to transmit the current signal to the metering circuit; The metering circuit is used to perform arithmetic processing on the voltage signal and the current signal to obtain electrical parameter information, and transmit the electrical parameter information to the microprocessor, and the electrical parameter information is used to characterize the power consumption situation of the at least one electrical device; The microprocessor is used to judge whether the at least one electrical device meets a preset condition according to the electrical parameter information, obtain an enabling signal, and transmit the enabling signal to the control circuit, and the enabling signal is used to enable the control circuit; The control circuit is used to obtain a power consumption control signal from the electricity meter, and after being enabled, control the power consumption control switch to turn off according to the power consumption control signal to cut off the power supply of the at least one electrical device; Wherein, the voltage acquisition circuit includes: a current limiting component, and the input terminal of the current limiting component is electrically connected to the live wire.

2. The fee control device according to claim 1, characterized in that The power consumption control device further includes: a wireless communication circuit, and the wireless communication circuit is electrically connected to the third terminal of the microprocessor; The wireless communication circuit is used to obtain the electrical parameter information from the microprocessor and transmit the electrical parameter information to the server so that the server remotely controls the power consumption control device.

3. The fee control device according to claim 2, characterized in that, The power consumption control device further includes: a power supply circuit; The output terminal of the power supply circuit is electrically connected to the power supply terminals of the voltage acquisition circuit, the current acquisition circuit, the metering circuit, the wireless communication circuit, the control circuit, and the microprocessor respectively; The power supply circuit is used to supply power to the voltage acquisition circuit, the current acquisition circuit, the metering circuit, the wireless communication circuit, the power supply terminals of the control circuit, and the microprocessor respectively.

4. The fee control device according to any one of claims 1-3, characterized in that, The control circuit includes: a switching tube, a relay, a pull-up resistor, and a terminal block; The control terminal of the switching transistor is electrically connected to the second terminal of the microprocessor. The first terminal of the switching transistor is electrically connected to the first terminal of the relay. The second terminal of the relay is electrically connected to the pull-up resistor. The third terminal of the relay is electrically connected to the first terminal of the wiring terminal. The fourth terminal of the relay and the second terminal of the wiring terminal are both electrically connected to the fee control switch. The first terminal and the second terminal of the wiring terminal are also both electrically connected to the electricity meter.

5. The fee control device according to any one of claims 1 to 3, characterized in that, The voltage acquisition circuit includes: a voltage transformer, a first sampling resistor, and a first filtering component; The first terminal of the voltage transformer is electrically connected to the output terminal of the current limiting component. The second terminal of the voltage transformer is electrically connected to the neutral line. The third terminal of the voltage transformer is electrically connected to the first terminal of the first filtering component. The second terminal of the first filtering component is electrically connected to the first terminal of the metering circuit. The first terminal of the first sampling resistor is electrically connected between the third terminal of the voltage transformer and the first terminal of the first filtering component. The fourth terminal of the voltage transformer, the second terminal of the second sampling resistor, and the third terminal of the first filtering component are all grounded.

6. The fee control device according to claim 5, characterized in that The first filtering component includes: a first resistor and a first capacitor; The first terminal of the first resistor is electrically connected to the third terminal of the voltage transformer. The second terminal of the first resistor is electrically connected to the first terminal of the metering circuit. The first terminal of the first capacitor is electrically connected between the second terminal of the first resistor and the first terminal of the metering circuit. The second terminal of the first capacitor is grounded.

7. The fee control device according to any one of claims 1-3, characterized in that The current acquisition circuit includes: a current transformer, a second sampling resistor, and a second filtering component; The first terminal of the secondary side of the current transformer is electrically connected to the first terminal of the second filtering component. The second terminal of the secondary side of the current transformer is electrically connected to the second terminal of the second filtering component. The first terminal of the second sampling resistor is electrically connected between the first terminal of the current transformer and the first terminal of the second filtering component. The second terminal of the second sampling resistor is electrically connected between the second terminal of the current transformer and the second terminal of the second filtering component. The third terminal and the fourth terminal of the second filtering component are both electrically connected to the first terminal of the metering circuit.

8. The fee control device according to claim 7, wherein The current acquisition circuit further includes: a clamping component; the first terminal of the clamping component is electrically connected between the first terminal of the current transformer and the first terminal of the second sampling resistor, and the second terminal of the clamping component is electrically connected between the second terminal of the current transformer and the second terminal of the second sampling resistor.

9. The fee control device according to claim 7, wherein, The second filtering component includes: a second resistor, a third resistor, a second capacitor, and a third capacitor; The first end of the second resistor is electrically connected to the first end of the current transformer, the first end of the third resistor is electrically connected to the second end of the current transformer, the second ends of the second resistor and the third resistor are both electrically connected to the first end of the metering circuit, the first end of the second capacitor is electrically connected between the second end of the second resistor and the first end of the metering circuit, the first end of the third capacitor is electrically connected between the second end of the third resistor and the first end of the metering circuit, and the second ends of the second capacitor and the third capacitor are both grounded.

10. A fee control system, characterized in that, Comprising: A watt-hour meter, a fee control switch, and a fee control device as described in any one of claims 1-9; The first end of the fee control device is electrically connected to the watt-hour meter, and the second end of the fee control device is electrically connected to the fee control switch.

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