Electricity utilization monitoring equipment for Internet of Things

Abstract

The utility model discloses a power utilization monitoring device of the Internet of Things, which comprises acquisition modules, a control node and a management microcomputer, and at least two acquisition modules are in wireless communication with the management microcomputer through the control node; the acquisition module comprises an electric energy metering module, a power supply module, a radio frequency communication module, a display module, a malignant load detection module and an MCU, the MCU is electrically connected with the electric energy metering module, the radio frequency communication module, the display module and the malignant load detection module, and the MCU is electrically connected with a controllable electronic switch which is connected in series with a power supply circuit in the electric energy control meter box; an acquisition function, a wireless communication function and a malignant load identification function are added on the basis of an existing electric energy control meter, acquisition and wireless communication of power utilization signals are achieved, a control node is installed on each building to form a local electric energy control management network, the control nodes are in wireless communication with a management microcomputer, and the control nodes are in wireless communication with the management microcomputer. And the power utilization signal acquired by the acquisition module is transmitted to the management microcomputer, so that the monitoring of power utilization data is completed.

Description

Technical Field

[0001] This utility model relates to the field of electrical safety technology, and in particular to an Internet of Things (IoT) electrical monitoring device. Background Technology

[0002] The electricity control meter is the last electrical device for controlling and measuring electricity costs in the power supply process. Changes in electricity data caused by users' electricity consumption behavior are first obtained by the electricity control meter, especially when the user's actual load power exceeds the prescribed limit or when using harmful loads such as non-linear loads of electronic equipment or switching power supplies. This is particularly true in places like school dormitories and factory dormitories where there are restrictions on the use of electrical equipment. The use of high-power electrical equipment can easily lead to electrical accidents. At the same time, these loads will generate harmonic currents and voltages in the power system, increase power system losses and energy consumption, reduce power quality, and pose safety hazards. If alarms are not issued in time, accidents may occur. Utility Model Content

[0003] The technical problem to be solved by this utility model is: to acquire load electrical signals and send them to the management microcomputer based on the existing power control meter, so as to realize the monitoring and management of power consumption and solve the problem of failure to promptly alarm and prevent accidents.

[0004] To solve the above-mentioned technical problems, the present invention provides a technical solution: an Internet of Things (IoT) power monitoring device, comprising a data acquisition module, a control node, and a management microcomputer, characterized in that:

[0005] The data acquisition module is installed in the power control meter box, and at least two of the data acquisition modules communicate wirelessly with the management microcomputer through the control node.

[0006] The acquisition module includes an energy metering module, a power supply module, an RF communication module, a display module, a malicious load detection module, and an MCU. The energy metering module includes a sampling circuit and a sampler. The sampling circuit is connected in series with the power supply circuit in the energy control meter. The voltage drop across the signal output resistor in the sampling circuit is applied to the V1 input / output terminal of the sampler and input to the malicious load detection module. The current across the signal output resistor in the sampling circuit is applied to the V2 output terminal of the sampler. The MCU is electrically connected to the energy metering module, the RF communication module, the display module, and the malicious load detection module. The power supply module is connected in parallel with the power supply circuit in the energy control meter box and draws power from it. The MCU is electrically connected to a controllable electronic switch connected in series with the power supply circuit in the energy control meter box.

[0007] Furthermore, the malicious load detection module includes an amplification and shaping circuit, a multiplexer, a processor, and a memory. The processor is electrically connected to the memory and the multiplexer. The multiplexer obtains the current corresponding to the voltage drop across the signal output resistor in the sampling circuit through the amplification and shaping circuit.

[0008] Furthermore, the display module includes interconnected digital tubes and digital tube driver controllers.

[0009] Furthermore, the sampler is electrically connected to the MCU via an optocoupler.

[0010] Furthermore, the acquisition module also includes a temperature sensor.

[0011] The beneficial effects of this utility model are as follows:

[0012] This application adds data acquisition, wireless communication, and malicious load identification functions to the existing power control meter. It enables the acquisition and wireless communication of power consumption signals, and installs a control node on each building. The control node, along with multiple acquisition modules on that building, forms a local power control and management network. The control node communicates wirelessly with a management computer, transmitting the power consumption signals acquired by the acquisition modules to the management computer for monitoring power consumption data. Furthermore, the control node controls the controllable electronic switches on the power supply circuit to control the power supply, providing an alarm function to prevent accidents caused by continued power supply. A display module shows the acquired power consumption information for easy viewing.

[0013] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this application.

[0016] Figure 2 This is a schematic diagram of the acquisition module.

[0017] In the diagram, 1-acquisition module, 2-control node, 3-management microcomputer, 4-power supply circuit;

[0018] 11-Electricity metering module, 12-Power supply module, 13-RF communication module, 14-Display module, 15-Malicious load detection module, 16-Memory control module. Detailed Implementation

[0019] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information. Example 1

[0022] like Figure 1-2 As shown, an Internet of Things (IoT) power monitoring device includes a data acquisition module 1, a control node 2, and a management microcomputer 3. The data acquisition module 1 is installed in the power control meter box and connected to the power supply line of each power user. At least two data acquisition modules 1 communicate wirelessly with the management microcomputer 3 through the control node 2. The control node 2 is a communication module with wireless transceiver function, and the management microcomputer 3 is a computer set up in the control center.

[0023] The data acquisition module 1 includes an energy metering module 11, a power supply module 12, an RF communication module 13, a display module 14, a critical load detection module 15, and an MCU. The MCU is an AT89S52 microcontroller, and the matching memory control module 16 uses a 24C64. The MCU is electrically connected to the energy metering module 11, the RF communication module 13, the display module 14, and the critical load detection module 15. The RF communication module 13 uses a CC2430. The power supply module 12 is connected in parallel with the power supply circuit 4 and draws power from it, outputting 5V and 3.3V voltages to power the energy metering module 11, the RF communication module 13, the display module 14, the critical load detection module 15, and the MCU. The MCU is electrically connected to a controllable electronic switch connected in series with the power supply circuit 4.

[0024] The power metering module 11 includes a sampling circuit and a sampler. The sampler uses an ADE7755. The sampling circuit is connected in series with the power supply circuit 4 in the power control meter box. The voltage drop of the signal output resistor R0 in the sampling circuit is applied to the V1 input / output terminal of the sampler and input to the malicious load detection module 15. The current of the signal output resistor in the sampling circuit is applied to the V2 output terminal of the sampler. The high-frequency signal pulse generated by the sampler is output from the CF terminal, and after passing through an optocoupler, it is sent to the P3.4 terminal of the MCU for metering. The resistance value of the signal output resistor R0 is adjusted in real time according to the power consumption.

[0025] The malicious load detection module 15 includes an amplification and shaping circuit, a multiplexer, a processor, and a memory. The multiplexer is a 16-to-1 multiplexer 74150, the processor is a PC87LPC768, and the memory is a 64K×1bit RAM 2164. The processor is electrically connected to the memory and the multiplexer. The multiplexer obtains the current corresponding to the voltage drop across the signal output resistor in the sampling circuit through the amplification and shaping circuit. It can be used to detect harmonic and asymmetric components in the load current, thereby realizing the detection and determination of malicious loads.

[0026] The display module 14 includes interconnected digital tubes and a digital tube driver controller, the digital tube driver controller being an LM8168A; it is used to display the collected power consumption information, which includes basic information such as voltage, current, and energy. Example 2

[0027] like Figure 1 and 2 As shown, this embodiment is obtained by adding technical features such as a temperature sensor on the basis of embodiment one. The remaining technical features are the same as those in embodiment one, and the similarities will not be repeated here. The difference between this embodiment and embodiment one is that the acquisition module 1 also includes a temperature sensor.

[0028] In this embodiment, the temperature sensor can collect the temperature of the power supply circuit 4 and the temperature inside the power control box to prevent abnormal power use from causing excessive temperature. It can monitor the temperature and issue timely alarms to prevent accidents caused by continued abnormal use.

[0029] The process of using the overall technical solution formed by the above embodiments is as follows: After obtaining the power consumption signal and temperature data of the power supply circuit 4, the power consumption signal and temperature are sent to the control node 2 through the wireless communication module, and the control node 2 forwards them to the management microcomputer 3. When cable leakage current, temperature exceeding the standard value or set value, or power exceeding the limit occurs on site, the power supply circuit 4 is disconnected through the controllable electronic switch to realize the disconnection and connection of the user's power supply.

[0030] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An Internet of Things (IoT) power consumption monitoring device, comprising a data acquisition module, a control node, and a management microcomputer, characterized in that: The data acquisition module is installed in the power control meter box, and at least two of the data acquisition modules communicate wirelessly with the management microcomputer through the control node. The acquisition module includes an energy metering module, a power supply module, an RF communication module, a display module, a malicious load detection module, and an MCU. The energy metering module includes a sampling circuit and a sampler. The sampling circuit is connected in series with the power supply circuit in the energy control meter box. The voltage drop of the signal output resistor in the sampling circuit is applied to the V1 input / output terminal of the sampler and input to the malicious load detection module. The current of the signal output resistor in the sampling circuit is applied to the V2 output terminal of the sampler. The MCU is electrically connected to the energy metering module, the RF communication module, the display module, and the malicious load detection module. The power supply module is connected in parallel with the power supply circuit in the energy control meter box and draws power from it. The MCU is electrically connected to a controllable electronic switch connected in series with the power supply circuit in the energy control meter box.

2. The IoT power consumption monitoring device according to claim 1, characterized in that: The malicious load detection module includes an amplification and shaping circuit, a multiplexer, a processor, and a memory. The processor is electrically connected to the memory and the multiplexer. The multiplexer obtains the current corresponding to the voltage drop across the signal output resistor in the sampling circuit through the amplification and shaping circuit.

3. The IoT power consumption monitoring device according to claim 1, characterized in that: The display module includes interconnected digital tubes and digital tube driver controllers.

4. The IoT power consumption monitoring device according to claim 1, characterized in that: The sampler is electrically connected to the MCU via an optocoupler.

5. The IoT power consumption monitoring device according to claim 1, characterized in that: The acquisition module also includes a temperature sensor.

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